Diabetes & Metabolism Journal

In-Kyu Lee (Lee IK)

15 Articles

Drug/Regimen
Efficacy and Safety of Metformin and Atorvastatin Combination Therapy vs. Monotherapy with Either Drug in Type 2 Diabetes Mellitus and Dyslipidemia Patients (ATOMIC): Double-Blinded Randomized Controlled Trial: Jie-Eun Lee, Seung Hee Yu, Sung Rae Kim, Kyu Jeung Ahn, Kee-Ho Song, In-Kyu Lee, Ho-Sang Shon, In Joo Kim, Soo Lim, Doo-Man Kim, Choon Hee Chung, Won-Young Lee, Soon Hee Lee, Dong Joon Kim, Sung-Rae Cho, Chang Hee Jung, Hyun Jeong Jeon, Seung-Hwan Lee, Keun-Young Park, Sang Youl Rhee, Sin Gon Kim, Seok O Park, Dae Jung Kim, Byung Joon Kim, Sang Ah Lee, Yong-Hyun Kim, Kyung-Soo Kim, Ji A Seo, Il Seong Nam-Goong, Chang Won Lee, Duk Kyu Kim, Sang Wook Kim, Chung Gu Cho, Jung Han Kim, Yeo-Joo Kim, Jae-Myung Yoo, Kyung Wan Min, Moon-Kyu Lee; Diabetes Metab J. 2024;48(4):730-739. Published online May 20, 2024; DOI: https://doi.org/10.4093/dmj.2023.0077

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Abstract PDF Supplementary Material PubReader ePub: Background
It is well known that a large number of patients with diabetes also have dyslipidemia, which significantly increases the risk of cardiovascular disease (CVD). This study aimed to evaluate the efficacy and safety of combination drugs consisting of metformin and atorvastatin, widely used as therapeutic agents for diabetes and dyslipidemia.
Methods
This randomized, double-blind, placebo-controlled, parallel-group and phase III multicenter study included adults with glycosylated hemoglobin (HbA1c) levels >7.0% and <10.0%, low-density lipoprotein cholesterol (LDL-C) >100 and <250 mg/dL. One hundred eighty-five eligible subjects were randomized to the combination group (metformin+atorvastatin), metformin group (metformin+atorvastatin placebo), and atorvastatin group (atorvastatin+metformin placebo). The primary efficacy endpoints were the percent changes in HbA1c and LDL-C levels from baseline at the end of the treatment.
Results
After 16 weeks of treatment compared to baseline, HbA1c showed a significant difference of 0.94% compared to the atorvastatin group in the combination group (0.35% vs. −0.58%, respectively; P<0.0001), whereas the proportion of patients with increased HbA1c was also 62% and 15%, respectively, showing a significant difference (P<0.001). The combination group also showed a significant decrease in LDL-C levels compared to the metformin group (−55.20% vs. −7.69%, P<0.001) without previously unknown adverse drug events.
Conclusion
The addition of atorvastatin to metformin improved HbA1c and LDL-C levels to a significant extent compared to metformin or atorvastatin alone in diabetes and dyslipidemia patients. This study also suggested metformin’s preventive effect on the glucose-elevating potential of atorvastatin in patients with type 2 diabetes mellitus and dyslipidemia, insufficiently controlled with exercise and diet. Metformin and atorvastatin combination might be an effective treatment in reducing the CVD risk in patients with both diabetes and dyslipidemia because of its lowering effect on LDL-C and glucose.

Basic research
Reducing Oxidative Stress and Inflammation by Pyruvate Dehydrogenase Kinase 4 Inhibition Is Important in Prevention of Renal Ischemia-Reperfusion Injury in Diabetic Mice: Ah Reum Khang, Dong Hun Kim, Min-Ji Kim, Chang Joo Oh, Jae-Han Jeon, Sung Hee Choi, In-Kyu Lee; Diabetes Metab J. 2024;48(3):405-417. Published online February 1, 2024; DOI: https://doi.org/10.4093/dmj.2023.0196

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Background
Reactive oxygen species (ROS) and inflammation are reported to have a fundamental role in the pathogenesis of ischemia-reperfusion (IR) injury, a leading cause of acute kidney injury. The present study investigated the role of pyruvate dehydrogenase kinase 4 (PDK4) in ROS production and inflammation following IR injury.
Methods
We used a streptozotocin-induced diabetic C57BL6/J mouse model, which was subjected to IR by clamping both renal pedicles. Cellular apoptosis and inflammatory markers were evaluated in NRK-52E cells and mouse primary tubular cells after hypoxia and reoxygenation using a hypoxia work station.
Results
Following IR injury in diabetic mice, the expression of PDK4, rather than the other PDK isoforms, was induced with a marked increase in pyruvate dehydrogenase E1α (PDHE1α) phosphorylation. This was accompanied by a pronounced ROS activation, as well as tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), interleukin-1β (IL-1β), and monocyte chemoattractant protein-1 (MCP-1) production. Notably, sodium dichloroacetate (DCA) attenuated renal IR injury-induced apoptosis which can be attributed to reducing PDK4 expression and PDHE1α phosphorylation levels. DCA or shPdk4 treatment reduced oxidative stress and decreased TNF-α, IL-6, IL-1β, and MCP-1 production after IR or hypoxia-reoxygenation injury.
Conclusion
PDK4 inhibition alleviated renal injury with decreased ROS production and inflammation, supporting a critical role for PDK4 in IR mediated damage. This result indicates another potential target for reno-protection during IR injury; accordingly, the role of PDK4 inhibition needs to be comprehensively elucidated in terms of mitochondrial function during renal IR injury.

Citations

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Exploring Renal Pyruvate Metabolism as a Therapeutic Avenue for Diabetic Kidney Injury
Jaemin Lee
Diabetes & Metabolism Journal.2024; 48(3): 385. CrossRef
Cardiovascular Disease and miRNAs: Possible Oxidative Stress-Regulating Roles of miRNAs
Seahyoung Lee
Antioxidants.2024; 13(6): 656. CrossRef

Basic Research
CycloZ Improves Hyperglycemia and Lipid Metabolism by Modulating Lysine Acetylation in KK-Ay Mice: Jongsu Jeon, Dohyun Lee, Bobae Kim, Bo-Yoon Park, Chang Joo Oh, Min-Ji Kim, Jae-Han Jeon, In-Kyu Lee, Onyu Park, Seoyeong Baek, Chae Won Lim, Dongryeol Ryu, Sungsoon Fang, Johan Auwerx, Kyong-Tai Kim, Hoe-Yune Jung; Diabetes Metab J. 2023;47(5):653-667. Published online April 26, 2023; DOI: https://doi.org/10.4093/dmj.2022.0244

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Background
CycloZ, a combination of cyclo-His-Pro and zinc, has anti-diabetic activity. However, its exact mode of action remains to be elucidated.
Methods
KK-Ay mice, a type 2 diabetes mellitus (T2DM) model, were administered CycloZ either as a preventive intervention, or as a therapy. Glycemic control was evaluated using the oral glucose tolerance test (OGTT), and glycosylated hemoglobin (HbA1c) levels. Liver and visceral adipose tissues (VATs) were used for histological evaluation, gene expression analysis, and protein expression analysis.
Results
CycloZ administration improved glycemic control in KK-Ay mice in both prophylactic and therapeutic studies. Lysine acetylation of peroxisome proliferator-activated receptor gamma coactivator 1-alpha, liver kinase B1, and nuclear factor-κB p65 was decreased in the liver and VATs in CycloZ-treated mice. In addition, CycloZ treatment improved mitochondrial function, lipid oxidation, and inflammation in the liver and VATs of mice. CycloZ treatment also increased the level of β-nicotinamide adenine dinucleotide (NAD⁺), which affected the activity of deacetylases, such as sirtuin 1 (Sirt1).
Conclusion
Our findings suggest that the beneficial effects of CycloZ on diabetes and obesity occur through increased NAD⁺ synthesis, which modulates Sirt1 deacetylase activity in the liver and VATs. Given that the mode of action of an NAD+ booster or Sirt1 deacetylase activator is different from that of traditional T2DM drugs, CycloZ would be considered a novel therapeutic option for the treatment of T2DM.

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Cyclo His‐Pro Attenuates Muscle Degeneration in Murine Myopathy Models
Alessia De Masi, Nadège Zanou, Keno Strotjohann, Dohyun Lee, Tanes I. Lima, Xiaoxu Li, Jongsu Jeon, Nicolas Place, Hoe‐Yune Jung, Johan Auwerx
Advanced Science.2024;[Epub] CrossRef

Metabolic Risk/Epidemiology
Novel Asian-Specific Visceral Adiposity Indices Are Associated with Chronic Kidney Disease in Korean Adults: Jonghwa Jin, Hyein Woo, Youngeun Jang, Won-Ki Lee, Jung-Guk Kim, In-Kyu Lee, Keun-Gyu Park, Yeon-Kyung Choi; Diabetes Metab J. 2023;47(3):426-436. Published online March 6, 2023; DOI: https://doi.org/10.4093/dmj.2022.0099

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Background
The Chinese visceral adiposity index (CVAI) and new visceral adiposity index (NVAI) are novel indices of visceral adiposity used to predict metabolic and cardiovascular diseases in Asian populations. However, the relationships of CVAI and NVAI with chronic kidney disease (CKD) have not been investigated. We aimed to characterize the relationships of CVAI and NVAI with the prevalence of CKD in Korean adults.
Methods
A total of 14,068 participants in the 7th Korea National Health and Nutrition Examination Survey (6,182 men and 7,886 women) were included. Receiver operating characteristic (ROC) analyses were employed to compare the associations between indices of adiposity and CKD, and a logistic regression model was used to characterize the relationships of CVAI and NVAI with CKD prevalence.
Results
The areas under the ROC curves for CVAI and NVAI were significantly larger than for the other indices, including the visceral adiposity index and lipid accumulation product, in both men and women (all P<0.001). In addition, high CVAI or NVAI was significantly associated with a high CKD prevalence in both men (odds ratio [OR], 2.14; 95% confidence interval [CI], 1.31 to 3.48 in CVAI and OR, 6.47; 95% CI, 2.91 to 14.38 in NVAI, P<0.05) and women (OR, 4.87; 95% CI, 1.85 to 12.79 in CVAI and OR, 3.03; 95% CI, 1.35 to 6.82 in NVAI, P<0.05); this association remained significant after adjustment for multiple confounding factors in men and women.
Conclusion
CVAI and NVAI are positively associated with CKD prevalence in a Korean population. CVAI and NVAI may be useful for the identification of CKD in Asian populations, including in Korea.

Citations

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Accessing the relationship between six surrogate insulin resistance indexes and the incidence of rapid kidney function decline and the progression to chronic kidney disease among middle-aged and older adults in China: Results from the China health and ret
Siti Liu, Honglin Sun, Jia Liu, Guang Wang
Diabetes Research and Clinical Practice.2024; 212: 111705. CrossRef
Association between visceral adiposity index and incidence of diabetic kidney disease in adults with diabetes in the United States
Chunyao Li, Gang Wang, Jiale Zhang, Weimin Jiang, Shuwu Wei, Wenna Wang, Shuyv Pang, Chenyv Pan, Weiwei Sun
Scientific Reports.2024;[Epub] CrossRef
Association between lipid accumulation product index and chronic kidney disease: A systematic review and meta-analysis
Feixiang Wu, Chenmin Cui, Junping Wu, Yunqing Wang
Experimental and Therapeutic Medicine.2024;[Epub] CrossRef
Linear associations of Chinese visceral adiposity index and its change with hyperuricemia: A prospective cohort study
Jia Chen, Xuejiao Liu, Shuai Lu, Siliang Man, Liang Zhang, Xiaojie Xu, Wei Deng, Xieyuan Jiang
Nutrition, Metabolism and Cardiovascular Diseases.2024; 34(11): 2472. CrossRef
Association between Chinese visceral adiposity index and risk of stroke incidence in middle-aged and elderly Chinese population: evidence from a large national cohort study
Zenglei Zhang, Lin Zhao, Yiting Lu, Xu Meng, Xianliang Zhou
Journal of Translational Medicine.2023;[Epub] CrossRef

Basic Research
The Link between Mitochondrial Dysfunction and Sarcopenia: An Update Focusing on the Role of Pyruvate Dehydrogenase Kinase 4: Min-Ji Kim, Ibotombi Singh Sinam, Zerwa Siddique, Jae-Han Jeon, In-Kyu Lee; Diabetes Metab J. 2023;47(2):153-163. Published online January 12, 2023; DOI: https://doi.org/10.4093/dmj.2022.0305

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Sarcopenia, defined as a progressive loss of muscle mass and function, is typified by mitochondrial dysfunction and loss of mitochondrial resilience. Sarcopenia is associated not only with aging, but also with various metabolic diseases characterized by mitochondrial dyshomeostasis. Pyruvate dehydrogenase kinases (PDKs) are mitochondrial enzymes that inhibit the pyruvate dehydrogenase complex, which controls pyruvate entry into the tricarboxylic acid cycle and the subsequent adenosine triphosphate production required for normal cellular activities. PDK4 is upregulated in mitochondrial dysfunction-related metabolic diseases, especially pathologic muscle conditions associated with enhanced muscle proteolysis and aberrant myogenesis. Increases in PDK4 are associated with perturbation of mitochondria-associated membranes and mitochondrial quality control, which are emerging as a central mechanism in the pathogenesis of metabolic disease-associated muscle atrophy. Here, we review how mitochondrial dysfunction affects sarcopenia, focusing on the role of PDK4 in mitochondrial homeostasis. We discuss the molecular mechanisms underlying the effects of PDK4 on mitochondrial dysfunction in sarcopenia and show that targeting mitochondria could be a therapeutic target for treating sarcopenia.

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Synthesis, activatory effects, molecular docking and ADME studies as rabbit muscle pyruvate kinase activators of ureido phenyl substituted 1,4-dihydropyridine derivatives
Mustafa Oğuzhan Kaya, Tuna Demirci, Ümit Çalışır, Oğuzhan Özdemir, Yeşim Kaya, Mustafa Arslan
Research on Chemical Intermediates.2024; 50(1): 437. CrossRef
Unraveling the causes of sarcopenia: Roles of neuromuscular junction impairment and mitochondrial dysfunction
Yanmei Miao, Leiyu Xie, Jiamei Song, Xing Cai, Jinghe Yang, Xinglong Ma, Shaolin Chen, Peng Xie
Physiological Reports.2024;[Epub] CrossRef
Metabolic clues to aging: exploring the role of circulating metabolites in frailty, sarcopenia and vascular aging related traits and diseases
Zonghao Qian, Yuzhen Huang, Yucong Zhang, Ni Yang, Ziwei Fang, Cuntai Zhang, Le Zhang
Frontiers in Genetics.2024;[Epub] CrossRef
Inhibition of Pyruvate Dehydrogenase Kinase 4 Protects Cardiomyocytes from lipopolysaccharide-Induced Mitochondrial Damage by Reducing Lactate Accumulation
Tangtian Chen, Qiumin Xie, Bin Tan, Qin Yi, Han Xiang, Rui Wang, Qin Zhou, Bolin He, Jie Tian, Jing Zhu, Hao Xu
Inflammation.2024; 47(4): 1356. CrossRef
Effect of resistance training plus enriched probiotic supplement on sestrin2, oxidative stress, and mitophagy markers in elderly male Wistar rats
Majid Mohabbat, Hamid Arazi
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Comparison between single-muscle evaluation and cross-sectional area muscle evaluation for predicting the prognosis in patients with oral squamous cell carcinoma: a retrospective cohort study
Hirotaka Takayama, Takuya Yoshimura, Hajime Suzuki, Yuka Hirano, Masahiro Tezuka, Takayuki Ishida, Kiyohide Ishihata, Marie Amitani, Haruka Amitani, Yasunori Nakamura, Yasushi Imamura, Akio Inui, Norifumi Nakamura
Frontiers in Oncology.2024;[Epub] CrossRef
Resveratrol and Vitamin D: Eclectic Molecules Promoting Mitochondrial Health in Sarcopenia
Cristina Russo, Maria Stella Valle, Floriana D’Angeli, Sofia Surdo, Lucia Malaguarnera
International Journal of Molecular Sciences.2024; 25(14): 7503. CrossRef
Unveiling the crucial role of peroxisomal acyl-CoA metabolism in muscle atrophy: Insights from genetic models and therapeutic interventions
Songling Jiang, Han Sol Kim, Ji Hyun Ryu, Yong-Soo Lee, Dong-Ik Kim, Eun-Jung Jin
Nano Today.2024; 58: 102417. CrossRef
Dichloroacetate Prevents Sepsis Associated Encephalopathy by Inhibiting Microglia Pyroptosis through PDK4/NLRP3
Xuliang Huang, Yuhao Zheng, Nan Wang, Mingming Zhao, Jinhui Liu, Wen Lin, Ye Zhu, Xiaofan Xie, Ya Lv, Junlu Wang, Yunchang Mo
Inflammation.2024;[Epub] CrossRef
The MyoGravity project to study real microgravity effects on human muscle precursor cells and tissue
Ester Sara Di Filippo, Sara Chiappalupi, Stefano Falone, Vincenza Dolo, Fernanda Amicarelli, Silvia Marchianò, Adriana Carino, Gabriele Mascetti, Giovanni Valentini, Sara Piccirillo, Michele Balsamo, Marco Vukich, Stefano Fiorucci, Guglielmo Sorci, Stefan
npj Microgravity.2024;[Epub] CrossRef
Neuroprotective Effects and Therapeutic Potential of Dichloroacetate: Targeting Metabolic Disorders in Nervous System Diseases
Yue Zhang, Meiyan Sun, Hongxiang Zhao, Zhengyan Wang, Yanan Shi, Jianxin Dong, Kaifang Wang, Xi Wang, Xingyue Li, Haiyan Qi, Xiaoyong Zhao
International Journal of Nanomedicine.2023; Volume 18: 7559. CrossRef

Metabolic Risk/Epidemiology
Effect of Low-Dose Persistent Organic Pollutants on Mitochondrial Function: Human and in Vitro Evidence: Se-A Kim, Hoyul Lee, Sung-Mi Park, Mi-Jin Kim, Yu-Mi Lee, Young-Ran Yoon, Hyun-Kyung Lee, Hyo-Bang Moon, In-Kyu Lee, Duk-Hee Lee; Diabetes Metab J. 2022;46(4):592-604. Published online January 26, 2022; DOI: https://doi.org/10.4093/dmj.2021.0132

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Background
Chronic exposure to low-dose persistent organic pollutants (POPs) can induce mitochondrial dysfunction. This study evaluated the association between serum POP concentrations and oxygen consumption rate (OCR) as a marker of mitochondrial function in humans and in vitro cells.
Methods
Serum concentrations of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) were measured in 323 adults. The OCRs of platelets and peripheral blood mononuclear cells (PBMCs) were assessed in 20 mL of fresh blood using a Seahorse XF analyzer. Additionally, the in vitro effects of Arochlor-1254, β-hexachlorocyclohexane, and p,p´-dichlorodiphenyltrichloroethane at concentrations of 0.1 pM to 100 nM were evaluated in human platelets, human PBMCs, and Jurkat T-cells.
Results
The association between serum POP concentrations and OCR differed depending on the cell type. As serum OCP concentrations increased, basal platelet OCR levels decreased significantly; according to the OCP quintiles of summary measure, they were 8.6, 9.6, 8.2, 8.0, and 7.1 pmol/min/μg (P trend=0.005). Notably, the basal PBMC OCR levels decreased remarkably as the serum PCB concentration increased. PBMC OCR levels were 46.5, 34.3, 29.1, 16.5, and 13.1 pmol/min/μg according to the PCB quintiles of summary measure (P trend <0.001), and this inverse association was consistently observed in all subgroups stratified by age, sex, obesity, type 2 diabetes mellitus, and hypertension, respectively. In vitro experimental studies have also demonstrated that chronic exposure to low-dose POPs could decrease OCR levels.
Conclusion
The findings from human and in vitro studies suggest that chronic exposure to low-dose POPs can induce mitochondrial dysfunction by impairing oxidative phosphorylation.

Citations

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Persistent Organic Pollutants released from decomposed adipose tissue affect mitochondrial enzyme function in the brain and eyes other than the liver
Dongshin Yang, Eun Ko, Hwayeon Lim, Hyojin Lee, Kitae Kim, Moonsung Choi, Sooim Shin
Environmental Science and Pollution Research.2024;[Epub] CrossRef
Obesity paradox can be a fact: unveiling the hidden role of adipose tissue
Duk-Hee Lee
European Heart Journal.2024; 45(24): 2167. CrossRef
Reduced bioenergetics and mitochondrial fragmentation in human primary cytotrophoblasts induced by an EGFR-targeting chemical mixture
Anita A. Waye, Elvis Ticiani, Zinat Sharmin, Vanessa Perez Silos, Thilini Perera, Alex Tu, Irina A. Buhimschi, Carlos A. Murga-Zamalloa, Ying S. Hu, Almudena Veiga-Lopez
Chemosphere.2024; 364: 143301. CrossRef
Can lipophilic pollutants in adipose tissue explain weight change‐related risk in type 2 diabetes mellitus?
Duk‐Hee Lee, In‐Kyu Lee
Journal of Diabetes Investigation.2023; 14(4): 528. CrossRef
Mitochondrial and metabolic features of salugenesis and the healing cycle
Robert K. Naviaux
Mitochondrion.2023; 70: 131. CrossRef
Obesity Paradox in Sepsis: Role of Adipose Tissue in Storing Mitochondrial Toxins
Duk-Hee Lee
Critical Care Medicine.2023; 51(8): e172. CrossRef
Human Preadipocytes Differentiated under Hypoxia following PCB126 Exposure during Proliferation: Effects on Differentiation, Glucose Uptake and Adipokine Profile
Zeinab El Amine, Jean-François Mauger, Pascal Imbeault
Cells.2023; 12(18): 2326. CrossRef
Is micronucleus assay in oral exfoliated cells a useful biomarker for biomonitoring populations exposed to pesticides? A systematic review with meta-analysis
Ingra Tais Malacarne, Wilton Mitsunari Takeshita, Daniel Vitor de Souza, Barbara dos Anjos Rosario, Milena de Barros Viana, Ana Claudia Muniz Renno, Daisy Maria Favero Salvadori, Daniel Araki Ribeiro
Environmental Science and Pollution Research.2022; 29(43): 64392. CrossRef
Comment on: Obesity is Associated with Improved Postoperative Overall Survival, Independent of Skeletal Muscle Mass in Lung Adenocarcinoma by Lee et al.
Duk‐Hee Lee
Journal of Cachexia, Sarcopenia and Muscle.2022; 13(5): 2576. CrossRef

Drug/Regimen
Evogliptin, a Dipeptidyl Peptidase-4 Inhibitor, Attenuates Renal Fibrosis Caused by Unilateral Ureteral Obstruction in Mice: Mi-Jin Kim, Na-young Kim, Yun-A Jung, Seunghyeong Lee, Gwon-Soo Jung, Jung-Guk Kim, In-Kyu Lee, Sungwoo Lee, Yeon-Kyung Choi, Keun-Gyu Park; Diabetes Metab J. 2020;44(1):186-192. Published online October 31, 2019; DOI: https://doi.org/10.4093/dmj.2018.0271

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Renal fibrosis is considered to be the final common outcome of chronic kidney disease. Dipeptidyl peptidase-4 (DPP-4) inhibitors have demonstrated protective effects against diabetic kidney disease. However, the anti-fibrotic effect of evogliptin, a DPP-4 inhibitor, has not been studied. Here, we report the beneficial effects of evogliptin on unilateral ureteral obstruction (UUO)-induced renal fibrosis in mice. Evogliptin attenuated UUO-induced renal atrophy and tubulointerstitial fibrosis. Immunohistochemistry and Western blotting demonstrated that evogliptin treatment inhibits pro-fibrotic gene expressions and extracellular matrix production. In vitro findings showed that the beneficial effects of evogliptin on renal fibrosis are mediated by inhibition of the transforming growth factor-β/Smad3 signaling pathway. The present study demonstrates that evogliptin is protective against UUO-induced renal fibrosis, suggesting that its clinical applications could extend to the treatment of kidney disease of non-diabetic origin.

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Targeting cluster of differentiation 26 / dipeptidyl peptidase 4 (CD26/DPP4) in organ fibrosis
Birte Ohm, Isabelle Moneke, Wolfgang Jungraithmayr
British Journal of Pharmacology.2023; 180(22): 2846. CrossRef
Linagliptin ameliorates pulmonary fibrosis in systemic sclerosis mouse model via inhibition of endothelial-to-mesenchymal transition
Biwei Pei, Na Zhang, Tingting Pang, Gengyun Sun
Molecular and Cellular Biochemistry.2022; 477(4): 995. CrossRef
Association Between DPP4 Inhibitor Use and the Incidence of Cirrhosis, ESRD, and Some Cancers in Patients With Diabetes
Yewon Na, Soo Wan Kim, Ie Byung Park, Soo Jung Choi, Seungyoon Nam, Jaehun Jung, Dae Ho Lee
The Journal of Clinical Endocrinology & Metabolism.2022; 107(11): 3022. CrossRef
Evogliptin Directly Inhibits Inflammatory and Fibrotic Signaling in Isolated Liver Cells
Hye-Young Seo, So-Hee Lee, Eugene Han, Jae Seok Hwang, Sol Han, Mi Kyung Kim, Byoung Kuk Jang
International Journal of Molecular Sciences.2022; 23(19): 11636. CrossRef
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Hyunyee Yoon, Su Hee Cho, Yu Rim Seo, Kyung-Sang Yu, Sung Sup Park, Moon Jung Song
Analytical Biochemistry.2021; 612: 113952. CrossRef
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Sungjin Chung, Gheun-Ho Kim
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Xin Huang, Yimin Khoong, Chengyao Han, Dai Su, Hao Ma, Shuchen Gu, Qingfeng Li, Tao Zan
Frontiers in Physiology.2021;[Epub] CrossRef
Efficacy and safety of evogliptin treatment in patients with type 2 diabetes: A multicentre, active‐controlled, randomized, double‐blind study with open‐label extension (the EVERGREEN study)
Gyuri Kim, Soo Lim, Hyuk‐Sang Kwon, Ie B. Park, Kyu J. Ahn, Cheol‐Young Park, Su K. Kwon, Hye S. Kim, Seok W. Park, Sin G. Kim, Min K. Moon, Eun S. Kim, Choon H. Chung, Kang S. Park, Mikyung Kim, Dong J. Chung, Chang B. Lee, Tae H. Kim, Moon‐Kyu Lee
Diabetes, Obesity and Metabolism.2020; 22(9): 1527. CrossRef
Effect of Switching from Linagliptin to Teneligliptin Dipeptidyl Peptidase-4 Inhibitors in Older Patients with Type 2 Diabetes Mellitus

Eugene Han, Minyoung Lee, Yong-ho Lee, Hye Soon Kim, Byung-wan Lee, Bong-Soo Cha, Eun Seok Kang
Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy.2020; Volume 13: 4113. CrossRef
Efficacy and safety of novel dipeptidyl-peptidase-4 inhibitor evogliptin in the management of type 2 diabetes mellitus: A meta-analysis
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Indian Journal of Endocrinology and Metabolism.2020; 24(5): 434. CrossRef

Complications
Gemigliptin Attenuates Renal Fibrosis Through Down-Regulation of the NLRP3 Inflammasome: Jung Beom Seo, Yeon-Kyung Choi, Hye-In Woo, Yun-A Jung, Sungwoo Lee, Seunghyeong Lee, Mihyang Park, In-Kyu Lee, Gwon-Soo Jung, Keun-Gyu Park; Diabetes Metab J. 2019;43(6):830-839. Published online March 5, 2019; DOI: https://doi.org/10.4093/dmj.2018.0181

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Background

The hypoglycemic drugs dipeptidyl peptidase-4 (DPP-4) inhibitors have proven protective effects on diabetic kidney disease, including renal fibrosis. Although NOD-like receptor protein 3 (NLRP3) inflammasome activation is known to play an important role in the progression of renal fibrosis, the impact of DPP-4 inhibition on NLRP3-mediated inflammation while ameliorating renal fibrosis has not been fully elucidated. Here, we report that the renoprotective effect of gemigliptin is associated with a reduction in NLRP3-mediated inflammation in a murine model of renal fibrosis.

Methods

We examined the effects of gemigliptin on renal tubulointerstitial fibrosis induced in mice by unilateral ureteral obstruction (UUO). Using immunohistochemical and Western blot analysis, we quantitated components of the NLRP3 inflammasome in kidneys with and without gemigliptin treatment, and in vitro in human kidney tubular epithelial human renal proximal tubule cells (HK-2) cells, we further analyzed the effect of gemigliptin on transforming growth factor-β (TGF-β)-stimulated production of profibrotic proteins.

Results

Immunohistological examination revealed that gemigliptin ameliorated UUO-induced tubular atrophy and renal fibrosis. Gemigliptin-treated kidneys showed a reduction in levels of NLRP3, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), caspase-1, and interleukin-1β, which had all been markedly increased by UUO. In line with the in vivo results, TGF-β markedly increased NLRP3 inflammasome markers, which were attenuated by gemigliptin treatment. Furthermore, gemigliptin treatment attenuated phosphorylated nuclear factor-κB levels, which had been increased in the UUO kidney as well as in TGF-β-treated cultured renal cells.

Conclusion

The present study shows that activation of the NLRP3 inflammasome contributes to UUO-induced renal fibrosis and the renoprotective effect of gemigliptin is associated with attenuation of NLRP3 inflammasome activation.

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Gemigliptin mitigates TGF-β-induced renal fibrosis through FGF21-mediated inhibition of the TGF-β/Smad3 signaling pathway
Jun-Kyu Byun, Gwon-Soo Jung
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Epidemiology
Low-Normal Free Thyroxine Levels in Euthyroid Male Are Associated with Prediabetes: Sung Woo Kim, Jae-Han Jeon, Jun Sung Moon, Eon Ju Jeon, Mi-Kyung Kim, In-Kyu Lee, Jung Beom Seo, Keun-Gyu Park; Diabetes Metab J. 2019;43(5):718-726. Published online March 19, 2019; DOI: https://doi.org/10.4093/dmj.2018.0222

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Abstract PDF Supplementary Material PubReader: Abnormal thyroid function is associated with impaired glucose homeostasis. This study aimed to determine whether free thyroxine (FT4) influences the prevalence of prediabetes in euthyroid subjects using a cross-sectional survey derived from the Korea National Health and Nutrition Examination Survey, conducted between 2013 and 2015. We studied 2,399 male participants of >20 years of age who were euthyroid and non-diabetic. Prediabetic participants had lower FT4 concentrations than those without prediabetes, but their thyrotropin concentrations were similar. We stratified the population into tertiles according to FT4 concentration. After adjusting for multiple confounding factors, glycosylated hemoglobin (HbA1c) levels significantly decreased with increasing FT4 tertile, whereas fasting plasma glucose (FPG) levels were not associated with FT4 tertiles (HbA1c, P<0.01 in T3 vs. T1; FPG, P=0.489 in T3 vs. T1). The prevalence of prediabetes was significantly higher in T1 (odds ratio, 1.426; 95% confidence interval, 1.126 to 1.806; P<0.01) than in T3. In conclusion, subjects with low-normal serum FT4 had high HbA1c and were more likely to have prediabetes. These results suggest that low FT4 concentration is a risk factor for prediabetes in male, even when thyroid function is within the normal range.

Islet Studies and Transplantation
Myricetin Protects Against High Glucose-Induced β-Cell Apoptosis by Attenuating Endoplasmic Reticulum Stress via Inactivation of Cyclin-Dependent Kinase 5: Udayakumar Karunakaran, Suma Elumalai, Jun Sung Moon, Jae-Han Jeon, Nam Doo Kim, Keun-Gyu Park, Kyu Chang Won, Jaechan Leem, In-Kyu Lee; Diabetes Metab J. 2019;43(2):192-205. Published online January 16, 2019; DOI: https://doi.org/10.4093/dmj.2018.0052

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Abstract PDF Supplementary Material PubReader

Background

Chronic hyperglycemia has deleterious effects on pancreatic β-cell function and turnover. Recent studies support the view that cyclin-dependent kinase 5 (CDK5) plays a role in β-cell failure under hyperglycemic conditions. However, little is known about how CDK5 impair β-cell function. Myricetin, a natural flavonoid, has therapeutic potential for the treatment of type 2 diabetes mellitus. In this study, we examined the effect of myricetin on high glucose (HG)-induced β-cell apoptosis and explored the relationship between myricetin and CDK5.

Methods

To address this question, we subjected INS-1 cells and isolated rat islets to HG conditions (30 mM) in the presence or absence of myricetin. Docking studies were conducted to validate the interaction between myricetin and CDK5. Gene expression and protein levels of endoplasmic reticulum (ER) stress markers were measured by real-time reverse transcription polymerase chain reaction and Western blot analysis.

Results

Activation of CDK5 in response to HG coupled with the induction of ER stress via the down regulation of sarcoendoplasmic reticulum calcium ATPase 2b (SERCA2b) gene expression and reduced the nuclear accumulation of pancreatic duodenal homeobox 1 (PDX1) leads to β-cell apoptosis. Docking study predicts that myricetin inhibit CDK5 activation by direct binding in the ATP-binding pocket. Myricetin counteracted the decrease in the levels of PDX1 and SERCA2b by HG. Moreover, myricetin attenuated HG-induced apoptosis in INS-1 cells and rat islets and reduce the mitochondrial dysfunction by decreasing reactive oxygen species production and mitochondrial membrane potential (Δψm) loss.

Conclusion

Myricetin protects the β-cells against HG-induced apoptosis by inhibiting ER stress, possibly through inactivation of CDK5 and consequent upregulation of PDX1 and SERCA2b.

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Obesity and Metabolic Syndrome
Role of the Pyruvate Dehydrogenase Complex in Metabolic Remodeling: Differential Pyruvate Dehydrogenase Complex Functions in Metabolism: Sungmi Park, Jae-Han Jeon, Byong-Keol Min, Chae-Myeong Ha, Themis Thoudam, Bo-Yoon Park, In-Kyu Lee; Diabetes Metab J. 2018;42(4):270-281. Published online August 21, 2018; DOI: https://doi.org/10.4093/dmj.2018.0101

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Abstract PDF PubReader

Mitochondrial dysfunction is a hallmark of metabolic diseases such as obesity, type 2 diabetes mellitus, neurodegenerative diseases, and cancers. Dysfunction occurs in part because of altered regulation of the mitochondrial pyruvate dehydrogenase complex (PDC), which acts as a central metabolic node that mediates pyruvate oxidation after glycolysis and fuels the Krebs cycle to meet energy demands. Fine-tuning of PDC activity has been mainly attributed to post-translational modifications of its subunits, including the extensively studied phosphorylation and de-phosphorylation of the E1α subunit of pyruvate dehydrogenase (PDH), modulated by kinases (pyruvate dehydrogenase kinase [PDK] 1-4) and phosphatases (pyruvate dehydrogenase phosphatase [PDP] 1-2), respectively. In addition to phosphorylation, other covalent modifications, including acetylation and succinylation, and changes in metabolite levels via metabolic pathways linked to utilization of glucose, fatty acids, and amino acids, have been identified. In this review, we will summarize the roles of PDC in diverse tissues and how regulation of its activity is affected in various metabolic disorders.

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Complications
Serum Levels of PCSK9 Are Associated with Coronary Angiographic Severity in Patients with Acute Coronary Syndrome: Kwi-Hyun Bae, Sung Woo Kim, Yeon-Kyung Choi, Jung Beom Seo, Namkyun Kim, Chang-Yeon Kim, Won Kee Lee, Sungwoo Lee, Jung Guk Kim, In-Kyu Lee, Jang Hoon Lee, Keun-Gyu Park; Diabetes Metab J. 2018;42(3):207-214. Published online May 2, 2018; DOI: https://doi.org/10.4093/dmj.2017.0081

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Abstract PDF PubReader

Background

Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a circulating protein that promotes degradation of the low density lipoprotein receptor. PCSK9 has emerged as a target for lipid-lowering therapy, but the predictive value of the serum level of PCSK9 for the severity of coronary disease is largely unknown.

Methods

From December 2009 to July 2012, 121 individuals who underwent coronary angiography (CAG) because of clinically suspected acute coronary syndrome were enrolled in this study. Serum levels of PCSK9 and metabolic parameters were measured. SYNTAX (SYNergy between percutaneous coronary intervention with [paclitaxel-eluting] TAXUS stent and cardiac surgery) and GRACE (Global Registry of Acute Coronary Events) scores were calculated.

Results

Individuals with CAG lesions (n=100) had significantly higher levels of PCSK9 than those without lesions (n=21). The study population was stratified into three groups according to serum levels of PCSK9. The odds radio for occurrence of one or more CAG lesions was significantly higher in the group with the highest level of PCSK9 (odds ratio, 7.468; P=0.011) than in the group with the lowest level of PCSK9. Serum PCSK9 was positively associated with the number of involved coronary arteries. Multivariable linear regression indicated that levels of PCSK9 were positively correlated with GRACE risk scores and SYNTAX scores.

Conclusion

Serum PCSK9 concentrations are higher in patients with coronary artery lesions, and are associated with SYNTAX and GRACE scores, suggesting that PCSK9 is a potential biomarker of the severity of coronary artery disease.

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Complications
Renoprotective Effect of Gemigliptin, a Dipeptidyl Peptidase-4 Inhibitor, in Streptozotocin-Induced Type 1 Diabetic Mice: Gwon-Soo Jung, Jae-Han Jeon, Mi Sun Choe, Sung-Woo Kim, In-Kyu Lee, Mi-Kyung Kim, Keun-Gyu Park; Diabetes Metab J. 2016;40(3):211-221. Published online March 31, 2016; DOI: https://doi.org/10.4093/dmj.2016.40.3.211

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Background

Dipeptidyl peptidase-4 (DPP-4) inhibitors are widely used in the treatment of patients with type 2 diabetes and have proven protective effects on diabetic kidney disease (DKD). Whether DPP-4 inhibitors have renoprotective effects on insulin-deficient type 1 diabetes has not been comprehensively examined. The aim of this study was to determine whether gemigliptin, a new DPP-4 inhibitor, has renoprotective effects in streptozotocin (STZ)-induced type 1 diabetic mice.

Methods

Diabetes was induced by intraperitoneal administration of a single dose of STZ. Mice with diabetes were treated without or with gemigliptin (300 mg/kg) for 8 weeks. Morphological changes of the glomerular basement membrane (GBM) were observed by electron microscopy and periodic-acid Schiff staining. In addition, we measured blood glucose and urinary albumin excretion and evaluated fibrotic markers using immunohistochemical staining, quantitative reverse transcription polymerase chain reaction analysis, and Western blot analysis.

Results

Gemigliptin did not reduce the blood glucose levels of STZ-treated mice. In gemigliptin-treated mice with STZ, a significant reduction in urinary albumin excretion and GBM thickness was observed. Immunohistological examination revealed that gemigliptin attenuated renal fibrosis induced by STZ and decreased extracellular matrix protein levels, including those of type I collagen and fibronectin, and Smad3 phosphorylation. In cultured rat renal cells, gemigliptin inhibited transforming growth factor β-stimulated type I collagen and fibronectin mRNA and protein levels via down-regulation of Smad3 phosphorylation.

Conclusion

Our data demonstrate that gemigliptin has renoprotective effects on DKD, regardless of its glucose-lowering effect, suggesting that it could be used to prevent DKD, including in patients with type 1 diabetes.

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The Role of Pyruvate Dehydrogenase Kinase in Diabetes and Obesity: In-Kyu Lee; Diabetes Metab J. 2014;38(3):181-186. Published online June 17, 2014; DOI: https://doi.org/10.4093/dmj.2014.38.3.181

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The pyruvate dehydrogenase complex (PDC) is an emerging target for the treatment of metabolic syndrome. To maintain a steady-state concentration of adenosine triphosphate during the feed-fast cycle, cells require efficient utilization of fatty acid and glucose, which is controlled by the PDC. The PDC converts pyruvate, coenzyme A (CoA), and oxidized nicotinamide adenine dinucleotide (NAD⁺) into acetyl-CoA, reduced form of nicotinamide adenine dinucleotide (NADH), and carbon dioxide. The activity of the PDC is up- and down-regulated by pyruvate dehydrogenase kinase and pyruvate dehydrogenase phosphatase, respectively. In addition, pyruvate is a key intermediate of glucose oxidation and an important precursor for the synthesis of glucose, glycerol, fatty acids, and nonessential amino acids.

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Transcriptional Regulation of Pyruvate Dehydrogenase Kinase: Ji Yun Jeong, Nam Ho Jeoung, Keun-Gyu Park, In-Kyu Lee; Diabetes Metab J. 2012;36(5):328-335. Published online October 18, 2012; DOI: https://doi.org/10.4093/dmj.2012.36.5.328

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The pyruvate dehydrogenase complex (PDC) activity is crucial to maintains blood glucose and ATP levels, which largely depends on the phosphorylation status by pyruvate dehydrogenase kinase (PDK) isoenzymes. Although it has been reported that PDC is phosphorylated and inactivated by PDK2 and PDK4 in metabolically active tissues including liver, skeletal muscle, heart, and kidney during starvation and diabetes, the precise mechanisms by which expression of PDK2 and PDK4 are transcriptionally regulated still remains unclear. Insulin represses the expression of PDK2 and PDK4 via phosphorylation of FOXO through PI3K/Akt signaling pathway. Several nuclear hormone receptors activated due to fasting or increased fat supply, including peroxisome proliferator-activated receptors, glucocorticoid receptors, estrogen-related receptors, and thyroid hormone receptors, also participate in the up-regulation of PDK2 and PDK4; however, the endogenous ligands that bind those nuclear receptors have not been identified. It has been recently suggested that growth hormone, adiponectin, epinephrine, and rosiglitazone also control the expression of PDK4 in tissue-specific manners. In this review, we discuss several factors involved in the expressional regulation of PDK2 and PDK4, and introduce current studies aimed at providing a better understanding of the molecular mechanisms that underlie the development of metabolic diseases such as diabetes.

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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology.2019; 233: 24. CrossRef
Restoring mitochondrial biogenesis with metformin attenuates β-GP-induced phenotypic transformation of VSMCs into an osteogenic phenotype via inhibition of PDK4/oxidative stress-mediated apoptosis
Wen-Qi Ma, Xue-Jiao Sun, Ying Wang, Yi Zhu, Xi-Qiong Han, Nai-Feng Liu
Molecular and Cellular Endocrinology.2019; 479: 39. CrossRef
Changes in acetyl-CoA mediate Sik3-induced maturation of chondrocytes in endochondral bone formation
Azuma Kosai, Nanao Horike, Yoshiaki Takei, Akihiro Yamashita, Kaori Fujita, Takashi Kamatani, Noriyuki Tsumaki
Biochemical and Biophysical Research Communications.2019; 516(4): 1097. CrossRef
Enhancing cardiac glycolysis causes an increase in PDK4 content in response to short-term high-fat diet
Maria F. Newhardt, Albert Batushansky, Satoshi Matsuzaki, Zachary T. Young, Melinda West, Ngun Cer Chin, Luke I. Szweda, Michael Kinter, Kenneth M. Humphries
Journal of Biological Chemistry.2019; 294(45): 16831. CrossRef
Upregulated PDK4 expression is a sensitive marker of increased fatty acid oxidation
Ina Katrine Nitschke Pettersen, Deusdedit Tusubira, Hanan Ashrafi, Sissel Elisabeth Dyrstad, Lena Hansen, Xiao-Zheng Liu, Linn Iren Hodneland Nilsson, Nils Gunnar Løvsletten, Kjetil Berge, Hege Wergedahl, Bodil Bjørndal, Øystein Fluge, Ove Bruland, Arild
Mitochondrion.2019; 49: 97. CrossRef
Metabolic Flexibility in Cancer: Targeting the Pyruvate Dehydrogenase Kinase:Pyruvate Dehydrogenase Axis
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Molecular Cancer Therapeutics.2019; 18(10): 1673. CrossRef
Clinical use of plasma lactate concentration. Part 1: Physiology, pathophysiology, and measurement
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Journal of Veterinary Emergency and Critical Care.2018; 28(2): 85. CrossRef
SIRT6 deacetylase transcriptionally regulates glucose metabolism in heart
Danish Khan, Mohsen Sarikhani, Subhajit Dasgupta, Babukrishna Maniyadath, Anwit S. Pandit, Sneha Mishra, Faiz Ahamed, Abhinav Dubey, Nowrin Fathma, Hanudatta S. Atreya, Ullas Kolthur‐Seetharam, Nagalingam R. Sundaresan
Journal of Cellular Physiology.2018; 233(7): 5478. CrossRef
Metabolic Changes Associated With Muscle Expression of SOD1G93A
Gabriella Dobrowolny, Elisa Lepore, Martina Martini, Laura Barberi, Abigail Nunn, Bianca Maria Scicchitano, Antonio Musarò
Frontiers in Physiology.2018;[Epub] CrossRef
Effect of sex on glucose handling by adipocytes isolated from rat subcutaneous, mesenteric and perigonadal adipose tissue
Floriana Rotondo, Ana Cecilia Ho-Palma, Xavier Remesar, José Antonio Fernández-López, María del Mar Romero, Marià Alemany
PeerJ.2018; 6: e5440. CrossRef
Heat stress decreases metabolic flexibility in skeletal muscle of growing pigs
Lidan Zhao, Ryan P. McMillan, Guohao Xie, Samantha G. L. W. Giridhar, Lance H. Baumgard, Samer El-Kadi, Joshua Selsby, Jason Ross, Nicholas Gabler, Matthew W. Hulver, Robert P. Rhoads
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology.2018; 315(6): R1096. CrossRef
Mechanisms of AMPK in the maintenance of ATP balance during energy metabolism
Rong Ke, Qicao Xu, Cong Li, Lingyu Luo, Deqiang Huang
Cell Biology International.2018; 42(4): 384. CrossRef
Advanced glycation end products accelerate calcification in VSMCs through HIF-1α/PDK4 activation and suppress glucose metabolism
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Scientific Reports.2018;[Epub] CrossRef
Nε-carboxymethyl-lysine promotes calcium deposition in VSMCs via intracellular oxidative stress-induced PDK4 activation and alters glucose metabolism
Wen-Qi Ma, Xi-Qiong Han, Ying Wang, Xin Wang, Yi Zhu, Nai-Feng Liu
Oncotarget.2017; 8(68): 112841. CrossRef
Pyruvate dehydrogenase kinase 4 deficiency attenuates cisplatin-induced acute kidney injury
Chang Joo Oh, Chae-Myeong Ha, Young-Keun Choi, Sungmi Park, Mi Sun Choe, Nam Ho Jeoung, Yang Hoon Huh, Hyo-Jeong Kim, Hee-Seok Kweon, Ji-min Lee, Sun Joo Lee, Jae-Han Jeon, Robert A. Harris, Keun-Gyu Park, In-Kyu Lee
Kidney International.2017; 91(4): 880. CrossRef
PPARβ/δ in human cancer
Rolf Müller
Biochimie.2017; 136: 90. CrossRef
The physiological and molecular response of Aurelia sp.1 under hypoxia
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Scientific Reports.2017;[Epub] CrossRef
A Drosophila model of GDAP1 function reveals the involvement of insulin signalling in the mitochondria-dependent neuromuscular degeneration
Víctor López del Amo, Martina Palomino-Schätzlein, Marta Seco-Cervera, José Luis García-Giménez, Federico Vicente Pallardó, Antonio Pineda-Lucena, Máximo Ibo Galindo
Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease.2017; 1863(3): 801. CrossRef
Western diet enhances intestinal tumorigenesis in Min/+ mice, associating with mucosal metabolic and inflammatory stress and loss of Apc heterozygosity
Mikael Niku, Anne-Maria Pajari, Laura Sarantaus, Essi Päivärinta, Markus Storvik, Anu Heiman-Lindh, Santeri Suokas, Minna Nyström, Marja Mutanen
The Journal of Nutritional Biochemistry.2017; 39: 126. CrossRef
Small heterodimer partner (SHP) deficiency protects myocardia from lipid accumulation in high fat diet-fed mice
Jung Hun Ohn, Ji Yeon Hwang, Min Kyong Moon, Hwa Young Ahn, Hwan Hee Kim, Young Do Koo, Kwang-Il Kim, Hyuk Jae Chang, Hye Seung Lee, Hak Chul Jang, Young Joo Park, Catherine Mounier
PLOS ONE.2017; 12(10): e0186021. CrossRef
Involvement of oxidative modification of proteins related to ATP synthesis in the left ventricles of hamsters with cardiomyopathy
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Scientific Reports.2017;[Epub] CrossRef
Early induction of pyruvate dehydrogenase kinase 4 by retinoic acids in adipocytes
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Molecular Nutrition & Food Research.2017;[Epub] CrossRef
Oncogenic role of PDK4 in human colon cancer cells
D Leclerc, D N T Pham, N Lévesque, M Truongcao, W D Foulkes, C Sapienza, R Rozen
British Journal of Cancer.2017; 116(7): 930. CrossRef
Fasting and Glucagon Stimulate Gene Expression of Pyruvate Dehydrogenase Kinase 4 in Chickens
Kazuhisa Honda, Shoko Takagi, Kiyotaka Kurachi, Haruka Sugimoto, Takaoki Saneyasu, Hiroshi Kamisoyama
The Journal of Poultry Science.2017; 54(4): 292. CrossRef
Therapeutic Targeting of the Pyruvate Dehydrogenase Complex/Pyruvate Dehydrogenase Kinase (PDC/PDK) Axis in Cancer
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JNCI: Journal of the National Cancer Institute.2017;[Epub] CrossRef
Reference Gene Selection and Prednisolone Target Gene Expression in Adipose Tissues of Friesian Cattle
Sara Divari, Enrica Berio, Bartolomeo Biolatti, Francesca Tiziana Cannizzo
Journal of Agricultural and Food Chemistry.2017; 65(50): 11140. CrossRef
Histone Deacetylase Inhibitors Protect Against Pyruvate Dehydrogenase Dysfunction in Huntington's Disease
Luana Naia, Teresa Cunha-Oliveira, Joana Rodrigues, Tatiana R. Rosenstock, Ana Oliveira, Márcio Ribeiro, Catarina Carmo, Sofia I. Oliveira-Sousa, Ana I. Duarte, Michael R. Hayden, A. Cristina Rego
The Journal of Neuroscience.2017; 37(10): 2776. CrossRef
Black Adzuki Bean (Vigna angularis) Extract Protects Pancreatic β Cells and Improves Glucose Tolerance in C57BL/6J Mice Fed a High-Fat Diet
Mina Kim, Dae Keun Kim, Youn-Soo Cha
Journal of Medicinal Food.2016; 19(5): 442. CrossRef
Inflammation increases pyruvate dehydrogenase kinase 4 (PDK4) expression via the Jun N-Terminal Kinase (JNK) pathway in C2C12 cells
Hana Park, Nam Ho Jeoung
Biochemical and Biophysical Research Communications.2016; 469(4): 1049. CrossRef
Mechanisms of Vascular Calcification: The Pivotal Role of Pyruvate Dehydrogenase Kinase 4
Jaechan Leem, In-Kyu Lee
Endocrinology and Metabolism.2016; 31(1): 52. CrossRef
Molecular Mechanisms of Obesity-Induced Osteoporosis and Muscle Atrophy
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Frontiers in Physiology.2016;[Epub] CrossRef
MiR-155 Enhances Insulin Sensitivity by Coordinated Regulation of Multiple Genes in Mice
Xiaolin Lin, Yujuan Qin, Junshuang Jia, Taoyan Lin, Xia Lin, Li Chen, Hui Zeng, Yanjiang Han, Lihong Wu, Shun Huang, Meng Wang, Shenhao Huang, Raoying Xie, Liqi Liang, Yu Liu, Ruiyu Liu, Tingting Zhang, Jing Li, Shengchun Wang, Penghui Sun, Wenhua Huang,
PLOS Genetics.2016; 12(10): e1006308. CrossRef
Transforming Growth Factor β Mediates Drug Resistance by Regulating the Expression of Pyruvate Dehydrogenase Kinase 4 in Colorectal Cancer
Yang Zhang, Yi Zhang, Liying Geng, Haowei Yi, Wei Huo, Geoffrey Talmon, Yeong C. Kim, San Ming Wang, Jing Wang
Journal of Biological Chemistry.2016; 291(33): 17405. CrossRef
Metabolic Response to Heat Stress in Late-Pregnant and Early Lactation Dairy Cows: Implications to Liver-Muscle Crosstalk
Franziska Koch, Ole Lamp, Mehdi Eslamizad, Joachim Weitzel, Björn Kuhla, Andrew C. Gill
PLOS ONE.2016; 11(8): e0160912. CrossRef
Short chain acyl-CoA dehydrogenase deficiency and short-term high-fat diet perturb mitochondrial energy metabolism and transcriptional control of lipid-handling in liver
Sujoy Ghosh, Claudia Kruger, Shawna Wicks, Jacob Simon, K. Ganesh Kumar, William D. Johnson, Randall L. Mynatt, Robert C. Noland, Brenda K. Richards
Nutrition & Metabolism.2016;[Epub] CrossRef
Metabolic reprogramming by the pyruvate dehydrogenase kinase–lactic acid axis: Linking metabolism and diverse neuropathophysiologies
Mithilesh Kumar Jha, In-Kyu Lee, Kyoungho Suk
Neuroscience & Biobehavioral Reviews.2016; 68: 1. CrossRef
1α,25-Dihydroxyvitamin D3 Regulates Mitochondrial Oxygen Consumption and Dynamics in Human Skeletal Muscle Cells
Zachary C. Ryan, Theodore A. Craig, Clifford D. Folmes, Xuewei Wang, Ian R. Lanza, Niccole S. Schaible, Jeffrey L. Salisbury, K. Sreekumaran Nair, Andre Terzic, Gary C. Sieck, Rajiv Kumar
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Janus and PI3-kinases mediate glucocorticoid resistance in activated chronic leukemia cells
Sina Oppermann, Avery J. Lam, Stephanie Tung, Yonghong Shi, Lindsay McCaw, Guizhei Wang, Jarkko Ylanko, Brian Leber, David Andrews, David E. Spaner
Oncotarget.2016; 7(45): 72608. CrossRef
Energy metabolic disorder is a major risk factor in severe influenza virus infection: Proposals for new therapeutic options based on animal model experiments
Hiroshi Kido, Irene L. Indalao, Hyejin Kim, Takashi Kimoto, Satoko Sakai, Etsuhisa Takahashi
Respiratory Investigation.2016; 54(5): 312. CrossRef
Fusarium graminearum pyruvate dehydrogenase kinase 1 (FgPDK1) Is Critical for Conidiation, Mycelium Growth, and Pathogenicity
Tao Gao, Jian Chen, Zhiqi Shi, Yin-Won Lee
PLOS ONE.2016; 11(6): e0158077. CrossRef
Cardiac Ryanodine Receptor (Ryr2)-mediated Calcium Signals Specifically Promote Glucose Oxidation via Pyruvate Dehydrogenase
Michael J. Bround, Rich Wambolt, Haoning Cen, Parisa Asghari, Razvan F. Albu, Jun Han, Donald McAfee, Marc Pourrier, Nichollas E. Scott, Lubos Bohunek, Jerzy E. Kulpa, S. R. Wayne Chen, David Fedida, Roger W. Brownsey, Christoph H. Borchers, Leonard J. Fo
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Pyruvate Dehydrogenase Kinases: Therapeutic Targets for Diabetes and Cancers
Nam Ho Jeoung
Diabetes & Metabolism Journal.2015; 39(3): 188. CrossRef
Novel molecular mechanisms involved in hormonal regulation of lactate production in Sertoli cells
Mariana Regueira, Silvana Lucía Artagaveytia, María Noel Galardo, Eliana Herminia Pellizzari, Selva Beatriz Cigorraga, Silvina Beatriz Meroni, María Fernanda Riera
REPRODUCTION.2015; 150(4): 311. CrossRef
Influence of dietary fatty acids on differentiation of human stromal vascular fraction preadipocytes
Anna Polus, Beata Kiec-Wilk, Urszula Razny, Anna Gielicz, Gerd Schmitz, Aldona Dembinska-Kiec
Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids.2015; 1851(9): 1146. CrossRef
A metabolic switch toward lipid use in glycolytic muscle is an early pathologic event in a mouse model of amyotrophic lateral sclerosis
Lavinia Palamiuc, Anna Schlagowski, Shyuan T Ngo, Aurelia Vernay, Sylvie Dirrig‐Grosch, Alexandre Henriques, Anne‐Laurence Boutillier, Joffrey Zoll, Andoni Echaniz‐Laguna, Jean‐Philippe Loeffler, Frédérique René
EMBO Molecular Medicine.2015; 7(5): 526. CrossRef
A genetic perspective on rapid evolution in cane toads (Rhinella marina)
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Molecular Ecology.2015; 24(9): 2264. CrossRef
Transcriptome profiling of brown adipose tissue during cold exposure reveals extensive regulation of glucose metabolism
Qin Hao, Rachita Yadav, Astrid L. Basse, Sidsel Petersen, Si B. Sonne, Simon Rasmussen, Qianhua Zhu, Zhike Lu, Jun Wang, Karine Audouze, Ramneek Gupta, Lise Madsen, Karsten Kristiansen, Jacob B. Hansen
American Journal of Physiology-Endocrinology and Metabolism.2015; 308(5): E380. CrossRef
Pyruvate Dehydrogenase Kinase 4 Promotes Vascular Calcification via SMAD1/5/8 Phosphorylation
Sun Joo Lee, Ji Yun Jeong, Chang Joo Oh, Sungmi Park, Joon-Young Kim, Han-Jong Kim, Nam Doo Kim, Young-Keun Choi, Ji-Yeon Do, Younghoon Go, Chae-Myeong Ha, Je-Yong Choi, Seung Huh, Nam Ho Jeoung, Ki-Up Lee, Hueng-Sik Choi, Yu Wang, Keun-Gyu Park, Robert A
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The long‐acting β2‐adrenoceptor agonist, indacaterol, enhances glucocorticoid receptor‐mediated transcription in human airway epithelial cells in a gene‐ and agonist‐dependent manner
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British Journal of Pharmacology.2015; 172(10): 2634. CrossRef
The Warburg effect in tumor progression: Mitochondrial oxidative metabolism as an anti-metastasis mechanism
Jianrong Lu, Ming Tan, Qingsong Cai
Cancer Letters.2015; 356(2): 156. CrossRef
The Role of Pyruvate Dehydrogenase Kinase in Diabetes and Obesity
In-Kyu Lee
Diabetes & Metabolism Journal.2014; 38(3): 181. CrossRef
Rapid in Vitro Metabolism of the Flame Retardant Triphenyl Phosphate and Effects on Cytotoxicity and mRNA Expression in Chicken Embryonic Hepatocytes
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Environmental Science & Technology.2014; 48(22): 13511. CrossRef
Low force contractions induce fatigue consistent with muscle mRNA expression in people with spinal cord injury
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Physiological Reports.2014; 2(2): e00248. CrossRef
Diisopropylamine Dichloroacetate, a Novel Pyruvate Dehydrogenase Kinase 4 Inhibitor, as a Potential Therapeutic Agent for Metabolic Disorders and Multiorgan Failure in Severe Influenza
Kazuhiko Yamane, Irene L. Indalao, Junji Chida, Yoshikazu Yamamoto, Masaaki Hanawa, Hiroshi Kido, Amy Lynn Adamson
PLoS ONE.2014; 9(5): e98032. CrossRef
Fatty Acid Transport Protein 1 (FATP1) Localizes in Mitochondria in Mouse Skeletal Muscle and Regulates Lipid and Ketone Body Disposal
Maria Guitart, Óscar Osorio-Conles, Thais Pentinat, Judith Cebrià, Judit García-Villoria, David Sala, David Sebastián, Antonio Zorzano, Antonia Ribes, Josep C. Jiménez-Chillarón, Celia García-Martínez, Anna M. Gómez-Foix, Cedric Moro
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CRNDE, a long non-coding RNA responsive to insulin/IGF signaling, regulates genes involved in central metabolism
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DLK1/PREF1 regulates nutrient metabolism and protects from steatosis
Marika Charalambous, Simao Teixeira Da Rocha, Elizabeth Jane Radford, Gema Medina-Gomez, Scott Curran, Scarlett B. Pinnock, Sacri R. Ferrón, Antonio Vidal-Puig, Anne C. Ferguson-Smith
Proceedings of the National Academy of Sciences.2014; 111(45): 16088. CrossRef
The pivotal role of pyruvate dehydrogenase kinases in metabolic flexibility
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Nutrition & Metabolism.2014;[Epub] CrossRef
Time‐dependent effects of the flame retardant tris(1,3‐dichloro‐2‐propyl) phosphate (TDCPP) on mRNA expression, in vitro and in ovo, reveal optimal sampling times for rapidly metabolized compounds
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Environmental Toxicology and Chemistry.2014; 33(12): 2842. CrossRef
Chickens from lines selected for high and low body weight show differences in fatty acid oxidation efficiency and metabolic flexibility in skeletal muscle and white adipose tissue
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International Journal of Obesity.2014; 38(10): 1374. CrossRef
Pathway-selective Insulin Resistance and Metabolic Disease: The Importance of Nutrient Flux
Yolanda F. Otero, John M. Stafford, Owen P. McGuinness
Journal of Biological Chemistry.2014; 289(30): 20462. CrossRef
Remodeling of Oxidative Energy Metabolism by Galactose Improves Glucose Handling and Metabolic Switching in Human Skeletal Muscle Cells
Eili Tranheim Kase, Nataša Nikolić, Siril Skaret Bakke, Kaja Kamilla Bogen, Vigdis Aas, G. Hege Thoresen, Arild Christian Rustan, Darcy Johannsen
PLoS ONE.2013; 8(4): e59972. CrossRef
Association of Estrogen Receptor α GenesPvuII andXbaI Polymorphisms with Type 2 Diabetes Mellitus in the Inpatient Population of a Hospital in Southern Iran
Farzaneh Mohammadi, Mohammad Pourahmadi, Mohadeseh Mosalanejad, Houshang Jamali, Mohamed Amin Ghobadifar, Saeideh Erfanian
Diabetes & Metabolism Journal.2013; 37(4): 270. CrossRef
The orphan nuclear receptors in cancer and diabetes
Harmit S. Ranhotra
Journal of Receptors and Signal Transduction.2013; 33(4): 207. CrossRef
Genes with Aberrant Expression in Murine Preneoplastic Intestine Show Epigenetic and Expression Changes in Normal Mucosa of Colon Cancer Patients
Daniel Leclerc, Nancy Lévesque, Yuanhang Cao, Liyuan Deng, Qing Wu, Jasmine Powell, Carmen Sapienza, Rima Rozen
Cancer Prevention Research.2013; 6(11): 1171. CrossRef

Author index