Diabetes & Metabolism Journal

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Response: Increased Serum Angiopoietin-Like 6 Ahead of Metabolic Syndrome in a Prospective Cohort Study (Diabetes Metab J 2019;43:521-9): Jun Namkung, Kyu-Sang Park; Diabetes Metab J. 2019;43(5):729-730. Published online October 24, 2019; DOI: https://doi.org/10.4093/dmj.2019.0178

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Original Articles

Obesity and Metabolic Syndrome
Increased Serum Angiopoietin-Like 6 Ahead of Metabolic Syndrome in a Prospective Cohort Study: Jun Namkung, Joon Hyung Sohn, Jae Seung Chang, Sang-Wook Park, Jang-Young Kim, Sang-Baek Koh, In Deok Kong, Kyu-Sang Park; Diabetes Metab J. 2019;43(4):521-529. Published online March 29, 2019; DOI: https://doi.org/10.4093/dmj.2018.0080

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Background

Despite being an anti-obesity hepatokine, the levels of serum angiopoietin-like 6 (ANGPTL6) are elevated in various metabolic diseases. Thus, ANGPTL6 expression may reflect metabolic burden and may have compensatory roles. This study investigated the association between serum ANGPTL6 levels and new-onset metabolic syndrome.

Methods

In total, 221 participants without metabolic syndrome were randomly selected from a rural cohort in Korea. Baseline serum ANGPTL6 levels were measured using an enzyme-linked immunosorbent assay. Anthropometric and biochemical markers were analyzed before and after follow-up examinations.

Results

During an average follow-up period of 2.75 (interquartile range, 0.76) years, 82 participants (37.1%) presented new-onset metabolic syndrome and had higher ANGPTL6 levels before onset than those without metabolic syndrome (48.03±18.84 ng/mL vs. 64.75±43.35 ng/mL, P=0.001). In the multivariable adjusted models, the odds ratio for the development of metabolic syndrome in the highest quartile of ANGPTL6 levels was 3.61 (95% confidence interval, 1.27 to 10.26). The use of ANGPTL6 levels in addition to the conventional components improved the prediction of new-onset metabolic syndrome (area under the receiver operating characteristic curve: 0.775 vs. 0.807, P=0.036).

Conclusion

Increased serum ANGPTL6 levels precede the development of metabolic syndrome and its components, including low high density lipoprotein, high triglyceride, and high glucose levels, which have an independent predictive value for metabolic syndrome.

Citations

Citations to this article as recorded by

Circulating Angiopoietin-like Protein 6 Levels and Clinical Features in Patients with Type 2 Diabetes
Kohzo Takebayashi, Tatsuhiko Suzuki, Mototaka Yamauchi, Kenji Hara, Takafumi Tsuchiya, Toshihiko Inukai, Koshi Hashimoto
Internal Medicine.2024;[Epub] CrossRef
Angiopoietin-Like Proteins: Cardiovascular Biology and Therapeutic Targeting for the Prevention of Cardiovascular Diseases
Eric Thorin, Pauline Labbé, Mélanie Lambert, Pauline Mury, Olina Dagher, Géraldine Miquel, Nathalie Thorin-Trescases
Canadian Journal of Cardiology.2023; 39(12): 1736. CrossRef
Hyperlipidemia and hypothyroidism
Xin Su, Hua Peng, Xiang Chen, Xijie Wu, Bin Wang
Clinica Chimica Acta.2022; 527: 61. CrossRef
Multidimensional Biomarker Analysis Including Mitochondrial Stress Indicators for Nonalcoholic Fatty Liver Disease
Eunha Chang, Jae Seung Chang, In Deok Kong, Soon Koo Baik, Moon Young Kim, Kyu-Sang Park
Gut and Liver.2022; 16(2): 171. CrossRef
Triglyceride and Triglyceride-Rich Lipoproteins in Atherosclerosis
Bai-Hui Zhang, Fan Yin, Ya-Nan Qiao, Shou-Dong Guo
Frontiers in Molecular Biosciences.2022;[Epub] CrossRef
Relationship of ANGPTL6 With Neonatal Glucose Homeostasis and Fat Mass Is Disrupted in Gestational Diabetic Pregnancies
Abel Valencia-Martínez, Ute Schaefer-Graf, Encarnación Amusquivar, Emilio Herrera, Henar Ortega-Senovilla
The Journal of Clinical Endocrinology & Metabolism.2022; 107(10): e4078. CrossRef
Update on dyslipidemia in hypothyroidism: the mechanism of dyslipidemia in hypothyroidism
Huixing Liu, Daoquan Peng
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RETRACTED ARTICLE: Relationship between the development of hyperlipidemia in hypothyroidism patients
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Effects of Exercise Intervention on Mitochondrial Stress Biomarkers in Metabolic Syndrome Patients: A Randomized Controlled Trial
Jae Seung Chang, Jun Namkung
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Angiopoietin-like proteins in atherosclerosis
Yi-Zhang Liu, Chi Zhang, Jie-Feng Jiang, Zhe-Bin Cheng, Zheng-Yang Zhou, Mu-Yao Tang, Jia-Xiang Sun, Liang Huang
Clinica Chimica Acta.2021; 521: 19. CrossRef
Effects of Bariatric Surgeries on Fetuin-A, Selenoprotein P, Angiopoietin-Like Protein 6, and Fibroblast Growth Factor 21 Concentration
Jakub Poloczek, Wojciech Kazura, Ewa Kwaśnicka, Janusz Gumprecht, Jerzy Jochem, Dominika Stygar, Munmun Chattopadhyay
Journal of Diabetes Research.2021; 2021: 1. CrossRef
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Tae Hyun Kim, Dong-Gyun Hong, Yoon Mee Yang
Biomedicines.2021; 9(12): 1903. CrossRef
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Semra ÖZKAN ÖZTÜRK, Hilmi ATASEVEN
Cumhuriyet Medical Journal.2021;[Epub] CrossRef
ANGPTL6 Level in Patient with Coronary Heart Disease and Its Relationship with the Severity of Coronary Artery Lesions
蕾任
Advances in Clinical Medicine.2020; 10(05): 714. CrossRef
Investigating the Role of Myeloperoxidase and Angiopoietin-like Protein 6 in Obesity and Diabetes
Mohammad G. Qaddoumi, Muath Alanbaei, Maha M. Hammad, Irina Al Khairi, Preethi Cherian, Arshad Channanath, Thangavel Alphonse Thanaraj, Fahd Al-Mulla, Mohamed Abu-Farha, Jehad Abubaker
Scientific Reports.2020;[Epub] CrossRef
Letter: Increased Serum Angiopoietin-Like 6 Ahead of Metabolic Syndrome in a Prospective Cohort Study (Diabetes Metab J 2019;43:521-9)
Jin Hwa Kim
Diabetes & Metabolism Journal.2019; 43(5): 727. CrossRef
Response: Increased Serum Angiopoietin-Like 6 Ahead of Metabolic Syndrome in a Prospective Cohort Study (Diabetes Metab J 2019;43:521-9)
Jun Namkung, Kyu-Sang Park
Diabetes & Metabolism Journal.2019; 43(5): 729. CrossRef

Obesity and Metabolic Syndrome
Inhibition of Serotonin Synthesis Induces Negative Hepatic Lipid Balance: Jun Namkung, Ko Eun Shong, Hyeongseok Kim, Chang-Myung Oh, Sangkyu Park, Hail Kim; Diabetes Metab J. 2018;42(3):233-243. Published online April 25, 2018; DOI: https://doi.org/10.4093/dmj.2017.0084

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25 Web of Science
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Background

Hepatic steatosis is caused by metabolic stress associated with a positive lipid balance, such as insulin resistance and obesity. Previously we have shown the anti-obesity effects of inhibiting serotonin synthesis, which eventually improved insulin sensitivity and hepatic steatosis. However, it is not clear whether serotonin has direct effect on hepatic lipid accumulation. Here, we showed the possibility of direct action of serotonin on hepatic steatosis.

Methods

Mice were treated with para-chlorophenylalanine (PCPA) or LP-533401 to inhibit serotonin synthesis and fed with high fat diet (HFD) or high carbohydrate diet (HCD) to induce hepatic steatosis. Hepatic triglyceride content and gene expression profiles were analyzed.

Results

Pharmacological and genetic inhibition of serotonin synthesis reduced HFD-induced hepatic lipid accumulation. Furthermore, short-term PCPA treatment prevented HCD-induced hepatic steatosis without affecting glucose tolerance and browning of subcutaneous adipose tissue. Gene expression analysis revealed that the expressions of genes involved in de novo lipogenesis and triacylglycerol synthesis were downregulated by short-term PCPA treatment as well as long-term PCPA treatment.

Conclusion

Short-term inhibition of serotonin synthesis prevented hepatic lipid accumulation without affecting systemic insulin sensitivity and energy expenditure, suggesting the direct steatogenic effect of serotonin in liver.

Citations

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