Diabetes & Metabolism Journal

Original Articles

Lifestyle and Behavioral Interventions
The Preventive Effect of Physical Activity on Gestational Diabetes Mellitus: A Korean Longitudinal Prospective Cohort Study: Ji Hyae Lim, Min Hyoung Kim, Hye-Ji Han, Su Ji Yang, Myung-Gwan Kim, Hyun Jung Lee, You Jung Han, Jin Hoon Chung, Dong Wook Kwak, Seongwoo Yang, Moon Young Kim, Hyun Mee Ryu; Received May 30, 2024 Accepted December 3, 2024 Published online April 23, 2025; DOI: https://doi.org/10.4093/dmj.2024.0280 [Epub ahead of print]

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Abstract PDF: Background
To assess longitudinally physical activity patterns and intensity from pre-pregnancy to postpartum and evaluate the association between timing and type of physical activity and the development of gestational diabetes mellitus (GDM).
Methods
The Korean Pregnancy Outcome Study (KPOS) is a prospective cohort study conducted from 2013 to 2017. Our study included 3,457 participants with singleton pregnancies in KPOS, classified according to the pregnancy outcome: GDM (n=231) and normal (n=3,226). Physical activity data were collected at five time points using the short form of the International Physical Activity Questionnaire: before pregnancy, at 12, 24, and 36 gestational weeks (GW), and 6–8 weeks postpartum. Pre-pregnancy physical activity was collected through recall at 12 GW.
Results
Maternal age, pre-pregnancy body mass index, educational status, smoking, mini dietary assessment index, first-degree family history of diabetes, hypertension, parity, pre-existing GDM, and previous macrosomia showed significant differences between the GDM group and the normal group (P<0.05 for all). Pre-pregnancy muscle-strengthening activity was significantly associated with a lower risk of GDM (adjusted odds ratio, 0.46; 95% confidence interval, 0.25 to 0.85).
Conclusion
These findings suggest that physical activity, such as muscle-strengthening activities before pregnancy, could be a preventive strategy to reduce GDM risk. Although the study does not provide evidence that physical activity during pregnancy and postpartum reduces GDM risk, it offers significant insights into the importance of maintaining a healthy level of physical activity from pre-pregnancy to prevent GDM.

Complications
Risk of End-Stage Kidney Disease in Individuals with Diabetes Living Alone: A Large-Scale Population-Based Study: Kyunghun Sung, Jae-Seung Yun, Bongseong Kim, Hun-Sung Kim, Jae-Hyoung Cho, Yong-Moon Mark Park, Kyungdo Han, Seung-Hwan Lee; Received September 20, 2024 Accepted December 12, 2024 Published online April 5, 2025; DOI: https://doi.org/10.4093/dmj.2024.0578 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Previous research has linked solitary living to various adverse health outcomes, but its association with diabetic complications among individuals with type 2 diabetes mellitus (T2DM) remains underexplored. We examined the risk of endstage kidney disease (ESKD) in individuals with diabetes living alone (IDLA).
Methods
This population-based cohort study used the National Health Information Database of Korea, which included 2,432,613 adults with T2DM. Household status was determined based on the number of registered family members. IDLA was defined as continuously living alone for 5 years or more. A multivariable Cox proportional hazards model was used to evaluate the association between living alone and the risk of developing ESKD.
Results
During a median follow-up of 6.0 years, 26,691 participants developed ESKD, with a higher incidence observed in the IDLA group than in the non-IDLA group. After adjusting for confounding variables, the hazard ratio for ESKD in the IDLA group was 1.10 (95% confidence interval, 1.06 to 1.14). The risk of ESKD was particularly elevated in younger individuals, those without underlying chronic kidney disease, with longer durations of living alone, and with low household income. Adherence to favorable lifestyle behaviors (no smoking, no alcohol consumption, and engaging in regular exercise) was associated with a significantly lower risk of ESKD, with a more pronounced effect in the IDLA group.
Conclusion
Living alone was associated with a higher risk of ESKD in individuals with T2DM. Tailored medical interventions and social support for IDLA are crucial for the prevention of diabetic complications.

Metabolic Risk/Epidemiology
Early Enrollment in Diabetes Pay-for-Performance Program Reduced Loss of Life Expectancy in Newly-Diagnosed Patients with Type 2 Diabetes Mellitus: Yu-Ching Chen, Wei-Ming Wang, Boniface J. Lin, Jung-Der Wang, Li-Jung Elizabeth Ku; Received August 25, 2024 Accepted December 3, 2024 Published online March 26, 2025; DOI: https://doi.org/10.4093/dmj.2024.0507 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Diabetes is associated with reduced lifespan. To explore pay-for-performance (P4P) program and life expectancy (LE), we investigated the impact of interval between diabetes diagnosis and enrollment in P4P program on loss-of-LE among patients with diabetes in Taiwan.
Methods
From diabetes mellitus health database, which collected all newly-diagnosed patients with diabetes by calendar year, we selected patients, aged 40 to 64, with 503,662 in P4P group and 450,071 in non-P4P group, respectively, from 2004 to 2015, and followed them until the end of 2018 using Kaplan–Meier survival analysis. We simulated age-, gender-, and calendar yearmatched referents for each group through Monte Carlo method from Taiwan’s vital statistics. We constructed a restricted cubic spline model on logit-transformed relative survival between each group and its corresponding matched referents, and applied a rolling-over algorithm month-by-month to extrapolate the survival function of each index group to lifetime to estimate the LE, which was subtracted from that of matched referents to obtain the loss-of-LE.
Results
We found stratified analysis by interval showed that the earlier the enrollment, the lower the loss-of-LE, namely, 0.06±0.72 years for interval <1 year, 0.05±0.59 years for interval 1–4 years, 10.01±0.11 years for interval 5–9 years, and 12.77±0.14 years for interval 10–15 years, respectively (P<0.001), compared with 2.60±0.14 years for non-P4P group.
Conclusion
Early enrollment in the P4P program was associated with reduced loss-of-LE, indicating P4P might gain life if implemented early after diabetes diagnosis.

Metabolic Risk/Epidemiology
Pregravid Weight Gain Is Associated with an Increased Risk of Gestational Diabetes: Sunmie Kim, Kyungdo Han, Su-Yeon Choi, Min Joo Kim, Sun Young Yang, Seung Ho Choi, Jeong Yoon Yim, Jin Ju Kim, Min-Jeong Kim; Received August 19, 2024 Accepted November 15, 2024 Published online March 26, 2025; DOI: https://doi.org/10.4093/dmj.2024.0491 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Studies have reported a significant association between pregravid weight gain and the subsequent development of gestational diabetes mellitus (GDM) in various populations. The current study aims to investigate this relationship using data from the Korean National Health Insurance Service database.
Methods
We conducted a retrospective nationwide population-based cohort study, involving 159,798 women who gave birth between 2015 and 2017 and had undergone two national health screening examinations: 1 year (index checkup) and 3 years before (baseline checkup) their respective estimated conception date. Participants were categorized into five groups based on the extent of weight change between the two examinations: more than 10%, 5% to 10%, –5% to 5% (reference group), –10% to –5%, and more than –10%. The study assessed the association between pregravid weight change and GDM risk.
Results
Among the 146,363 women analyzed, 11,012 (7.52%) were diagnosed with GDM. Multiple regression analysis revealed that women who gained 5% to 10% of their weight had a 12% increased risk of GDM (adjusted odds ratio [aOR], 1.12; 95% confidence interval [CI], 1.06 to 1.17), while those who gained ≥10% had a 34% higher risk (aOR, 1.34; 95% CI, 1.26 to 1.43). Notably, pregravid weight gain was particularly associated with GDM risk in non-obese or non-metabolic syndrome groups at index checkup.
Conclusion
Pregravid weight gain showed a dose-dependent association with a higher risk of GDM. This association was more pronounced in non-obese individuals emphasizing the importance of minimizing pregravid weight gain for GDM prevention, even in non-obese women.

Others
Fibroblast Growth Factor 21 Levels Are Associated With Perception and Neural Responses to Sweetness in Type 2 Diabetes Mellitus: Piao Kang, Ying Zhang, Dian Zeng, Dan Liu, Rui Han, Yuwei Lu, Di Cheng, Qinyi Wang, Silin Liu, Liang Wu, Qian Wu, Shujie Yu, Anran Chen, Jingyi Guo, Wenli Ge, Jiacheng Ni, Jingyi Yang, Xiaomeng Wu, Lifei Ma, Weiping Jia, Qichen Fang, Yuehua Li, Huating Li; Received July 17, 2024 Accepted December 3, 2024 Published online March 26, 2025; DOI: https://doi.org/10.4093/dmj.2024.0390 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
The relationship between fibroblast growth factor 21 (FGF21) and sweet taste perception and preference in type 2 diabetes mellitus (T2DM) remains unclear. This study aims to investigate this relationship and examine the neural responses of T2DM patients to high-calorie sweet (HCS) food pictures, further exploring its correlation with FGF21 levels.
Methods
We assessed sweet taste perception and preference in 40 T2DM patients and 41 controls using classical scales. Subsequently, the neural responses of 11 T2DM patients and 11 controls to HCS pictures were examined using functional magnetic resonance imaging. FGF21 levels were measured using chemiluminescent immunoassay, and the correlations with taste perception and neural responses were analyzed.
Results
Increased FGF21 levels were associated with decreased sweet perception and increased sweet taste preference in T2DM patients. Compared to control, T2DM patients exhibited greater neural activations in the orbitofrontal cortex, anterior cingulate cortex (ACC), thalamus, and hippocampus (HCS vs. non-food) as well as the putamen (HCS vs. low-calorie food). Notable differences were observed in the parahippocampal gyrus, insula, ACC, and hippocampus in T2DM patients (HCS vs. high-calorie non-sweet). Additionally, FGF21 accounted for 30.39% and 32.4% of the associations between T2DM and ACC, and parahippocampal gyrus, respectively.
Conclusion
FGF21 levels were independently associated with changes in sweet taste perception and preference in T2DM patients and were significantly associated with activation in reward-related brain regions. This study reveals the potential role of FGF21 in regulating responses to sweet foods in T2DM and provides insight to develop new therapeutic strategies for diabetes.

Basic Research
Effects of CXCR1/2 Blockade with Ladarixin on Streptozotocin-Induced Type 1 Diabetes Mellitus and Peripheral Neuropathy and Retinopathy in Rat: Serena Boccella, Andrea Maria Morace, Cristina Giorgio, Francesca Guida, Michela Perrone, Iolanda Manzo, Carmela Belardo, Meghan Jones, Sabatino Maione, Andrea Aramini, Marcello Allegretti, Livio Luongo, Laura Brandolini; Received August 25, 2024 Accepted November 15, 2024 Published online March 12, 2025; DOI: https://doi.org/10.4093/dmj.2024.0504 [Epub ahead of print]

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Abstract PDF PubReader ePub: Background
The CXC motif chemokine ligand 8 (CXCL8)-CXC motif chemokine receptor 1/2 (CXCR1/2) axis has been implicated in type 1 diabetes mellitus (T1DM). Its actions on non-immune cells may also contribute to T1DM-associated complications, including painful diabetic peripheral neuropathy (DPN) and diabetic retinopathy (DR).
Methods
We assessed the efficacy of early (4–8 weeks) or late (8–12 weeks) daily ladarixin (LDX) for the treatment of streptozotocin (STZ)-induced T1DM and the related complications of DPN or DR in male rats.
Results
Early LDX mitigated STZ-induced dysmetabolism (i.e., blood glucose, insulin), inflammation in dorsal root ganglion/ sciatic nerve (interleukin-1β and tumor necrosis factor-α expression) and mechanical allodynia and thermal hyperalgesia, indicative of DPN. Moreover, vitreous citrullinated histone H3 (CitH3) and plasma GRO/CINC1 (CXCL8) increase were attenuated. Late LDX failed to reverse STZ-induced changes in metabolic parameters (i.e., blood glucose, insulin, C-peptide, pancreatic β-cell number and function). Strikingly, even in the absence of an effect on glycemic control, late LDX mitigated STZ-induced mechanical allodynia and thermal hyperalgesia and vitreous (CXCL8, CitH3) and retinal (CXCL8, CXCR1/2, myeloperoxidase, CitH3) inflammatory/pro-angiogenic (vascular endothelial growth factor, CD34) signs of DR.
Conclusion
These data confirm the efficacy of LDX in STZ-induced T1DM and provide evidence of a protective effect also against DPN and onset of DR which is independent of its effect on β-cell functionality preservation and glycemic control.

Complications
Global, Regional, and National Temporal Trends in Incidence for Type 2 Diabetes Mellitus Related Chronic Kidney Disease from 1992 to 2021: Yu Cao, Huiting Chen, Hui Liu, Hao Wu, Wei Gao; Received September 26, 2024 Accepted November 21, 2024 Published online March 11, 2025; DOI: https://doi.org/10.4093/dmj.2024.0593 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Type 2 diabetes mellitus (T2DM) is a major cause of declining renal function.
Methods
Temporal trends in T2DM-related chronic kidney disease (CKD-T2DM) incidence across 204 countries and territories from 1992 to 2021 were analyzed using data from the Global Burden of Disease 2021. The impact of macro-factors (demographic change, age, period, and birth cohort) on CKD-T2DM incidence trends was assessed using decomposition analyses and age-period- cohort modeling, highlighting opportunities to improve incidence and reduce regional disparities.
Results
In 2021, global CKD-T2DM incidence cases reached 2.01 million, a 150.92% increase since 1992, with population growth and aging contributing to 80% of this rise. The age-standardized incidence rate (ASIR) ranged from 15.09 per 100,000 in low sociodemographic index (SDI) regions to 23.07 in high SDI regions. China, India, the United States, and Japan have the most incidence cases, accounted for 69% of incidence cases globally. With 175 countries showing an increasing ASIR trend. Unfavorable trend in ASIR increase were generally found in most high-middle and middle SDI countries, such as China and Mexico (net drift=0.15% and 1.17%, per year). Age-period-cohort analyses indicated a high incidence risk near age 80, with worsening risks for recent periods and birth cohorts, except in high SDI areas.
Conclusion
The CKD-T2DM incidence burden continues to rise globally, with significant variations between countries, posing major global health implications. CKD-T2DM is largely preventable and treatable, warranting greater attention in global health policy, particularly for older populations and in low and middle SDI regions.

Type 1 Diabetes
Global Burden of Type 1 Diabetes Mellitus Related Chronic Kidney Disease among Adolescents and Young Adults, and Projections to 2035: Results from the Global Burden of Disease Study 2021: Xiaoli Qu, Chongbin Liu, Lin Sun, Zhifeng Sheng; Received September 4, 2024 Accepted December 12, 2024 Published online March 10, 2025; DOI: https://doi.org/10.4093/dmj.2024.0544 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Type 1 diabetes mellitus related chronic kidney disease (T1DM-CKD) presents a global health challenge, with unclear trends and patterns among adolescents and young adults. This study analyzed the burden and risk factors of T1DM-CKD in individuals aged 15 to 39 from 1990 to 2021 and predicted future trends.
Methods
Using data from the Global Burden of Disease (GBD) study 2021, we analyzed the prevalence, incidence, mortality, disability-adjusted life years (DALYs), and average annual percentage change (AAPC) of T1DM-CKD among youth across gender, sociodemographic index (SDI) areas, and data from 21 regions and 204 countries and territories. Risk factors were assessed and future trends were projected.
Results
Between 1990 and 2021, the global prevalence of T1DM-CKD aged 15 to 39 increased by 107.5% to 3.32 million, with an age-standardized prevalence rate (ASPR) of 111.44 per 100,000 (AAPC 1.33%). Incidence rose by 165.4% to 14,200, with an agestandardized incidence rate of 0.48 per 100,000 (AAPC 2.19%). However, age-standardized mortality rate (0.50 per 100,000, AAPC –0.87%) and age-standardized DALYs rate (30.61 per 100,000, AAPC –0.83%) decreased. ASPR increased across all SDI regions, especially in high-SDI countries. High fasting glucose remained the major risk factor influencing DALYs. By 2035, T1DM-CKD prevalence was projected to decrease to 2.86 million (ASPR 89.67 per 100,000).
Conclusion
The research revealed a global increase in T1DM-CKD among youth, with a shift towards younger onset and significant variations based on gender and location, emphasizing the importance of early prevention and management strategies for this demographic.

Complications
Burden of End-Stage Kidney Disease by Type 2 Diabetes Mellitus Status in South Korea: A Nationwide Epidemiologic Study: Jwa-Kyung Kim, Han Na Jung, Bum Jun Kim, Boram Han, Ji Hye Huh, Eun Roh, Joo-Hee Kim, Kyung-Do Han, Jun Goo Kang; Received July 31, 2024 Accepted November 5, 2024 Published online March 6, 2025; DOI: https://doi.org/10.4093/dmj.2024.0443 [Epub ahead of print]

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Abstract PDF PubReader ePub: Background
Patients with diabetes are known to be at high risk for end-stage kidney disease (ESKD), but the accurate annual risk data for new-onset ESKD is still limited. In South Korea, the prevalence and incidence of ESKD are increasing more rapidly compared to the global average. This study aimed to determine the incidence rate (IR) of ESKD by diabetes status from 2012 to 2022.
Methods
Using data from the Korean National Health Insurance Service, we calculated the IR and hazard ratio (HR) for newonset ESKD in the general population. Individuals were categorized based on diabetes status into nondiabetes, impaired fasting glucose (IFG), diabetes duration <5 and ≥5 years.
Results
Among the participants, 67.6% were nondiabetic, 22.3% had IFG, and 10% had diabetes. In Korea, the IRs of ESKD were 139 per million population (pmp) for nondiabetes, 188 pmp for IFG, 632 pmp for diabetes <5 years, and 3,403 pmp for diabetes ≥5 years. An advanced estimated glomerular filtration rate (eGFR) category was the strongest risk factor for ESKD development. However, even in patients with normal renal function, those with long-standing diabetes had a 14-fold higher risk of ESKD compared to nondiabetic individuals. The risk of ESKD associated with diabetes increased exponentially with declining renal function. Notably, IFG showed an increasing tendency for ESKD in younger patients (<65 years) with early-stage chronic kidney disease (CKD; eGFR ≥60 mL/min/1.73 m²).
Conclusion
Longer diabetes duration amplifies ESKD risk, particularly as renal function declines. Even in patients with normal renal function, long-standing diabetes significantly increases ESKD risk, while IFG is associated with elevated risk only in younger individuals with early-stage CKD.

Guideline/Statement/Fact Sheet
Older Adults with Diabetes in Korea: Latest Clinical and Epidemiologic Trends: Kyuho Kim, Bongseong Kim, Kyuna Lee, Yu-Bae Ahn, Seung-Hyun Ko, Sung Hee Choi, Kyungdo Han, Jae-Seung Yun, on Behalf of the Committee of Public Relation of the Korean Diabetes Association; Diabetes Metab J. 2025;49(2):183-193. Published online March 1, 2025; DOI: https://doi.org/10.4093/dmj.2024.0836

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Abstract PDF Supplementary Material PubReader ePub: Background
Diabetes in older adults is becoming a significant public burden to South Korea. However, a comprehensive understanding of epidemiologic trends and the detailed clinical characteristics of older adults with diabetes is lacking. Therefore, we evaluated epidemiologic trends and the metabolic and lifestyle characteristics of diabetes in Korean older adults.
Methods
We analyzed data from the Korea National Health and Nutrition Examination Survey to assess diabetes prevalence according to diabetes duration and lifestyle behaviors. In addition, we drew upon the National Health Information Database of the National Health Insurance System to assess physical activity levels, antidiabetic medication use, polypharmacy, medication adherence, and major comorbidities.
Results
The absolute number of newly diagnosed cases of diabetes among older adults doubled over the past decade. Management rates of metabolic indicators were higher in older adults with diabetes compared to those without diabetes. The proportion of older adults with diabetes meeting the minimum recommended physical activity increased over the years. Compared to 10 years before, the use of dipeptidyl peptidase-4 inhibitor or sodium-glucose cotransporter-2 inhibitor had increased, as had comorbidities such as dyslipidemia, dementia, cancer, heart failure, atrial fibrillation, and chronic kidney disease. Initial medication adherence was significantly lower in those with end-stage kidney disease or dementia, insulin use, high-risk alcohol use, and living alone. Continuing insulin use 1 year after diagnosis of diabetes was significantly higher in those who initiated insulin therapy at diagnosis, had retinopathy, were on triple antidiabetic medications, and had a history of cancer.
Conclusion
Comprehensive management of metabolic indicators and physical activity is essential for older adults with diabetes. Improvements in prescribing guidelines, personalized management of age-related comorbidities, and individualized approaches that consider the heterogeneous nature of older adults with diabetes are desirable. Further research, such as high-quality cohort and intervention studies specific to older adults, is needed to establish evidence-based management for older adults with diabetes.

Guideline/Statement/Fact Sheet
Prevalence, Incidence, and Metabolic Characteristics of Young Adults with Type 2 Diabetes Mellitus in South Korea (2010–2020): Ji Yoon Kim, Jiyoon Lee, Joon Ho Moon, Se Eun Park, Seung-Hyun Ko, Sung Hee Choi, Nam Hoon Kim; Diabetes Metab J. 2025;49(2):172-182. Published online March 1, 2025; DOI: https://doi.org/10.4093/dmj.2024.0826

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Abstract PDF Supplementary Material PubReader ePub: Background
This study aimed to examine trends in the prevalence, incidence, metabolic characteristics, and management of type 2 diabetes mellitus (T2DM) among young adults in South Korea.
Methods
Young adults with T2DM were defined as individuals aged 19 to 39 years who met the diagnostic criteria for T2DM. Data from the Korean National Health Insurance Service-Customized Database (2010–2020, n=225,497–372,726) were analyzed to evaluate trends in T2DM prevalence, incidence, metabolic profiles, comorbidities, and antidiabetic drug prescription. Additional analyses were performed using the Korea National Health and Nutrition Examination Survey.
Results
The prevalence of T2DM in young adults significantly increased from 1.02% in 2010 to 2.02% in 2020 (P<0.001), corresponding to 372,726 patients in 2020. Over the same period, the incidence rate remained stable within the range of 0.36% to 0.45%. Prediabetes prevalence steadily increased from 15.53% to 20.92%, affecting 3.87 million individuals in 2020. The proportion of young adults with T2DM who were obese also increased, with 67.8% having a body mass index (BMI) ≥25 kg/m² and 31.6% having a BMI ≥30 kg/m² in 2020. The prevalence of hypertension, dyslipidemia, and fatty liver disease also increased, reaching 34.2%, 79.8%, and 78.9%, respectively, in 2020. Although the overall pharmacological treatment rate remained low, the prescription of antidiabetic medications with weight-reducing properties increased over the study period.
Conclusion
The prevalence of T2DM among young adults in South Korea nearly doubled over the past decade. The strong association with obesity and metabolic comorbidities emphasizes the urgent need for targeted prevention and management strategies tailored to this population.

Metabolic Risk/Epidemiology
Effects of Pancreatitis and Type 2 Diabetes Mellitus on the Development of Pancreatic Cancer: A Nationwide Nested Case-Control Study: Young-eun Kim, Min Heui Yu, Chung Mo Nam, Eun Seok Kang; Diabetes Metab J. 2025;49(2):252-263. Published online March 1, 2025; DOI: https://doi.org/10.4093/dmj.2024.0277

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Abstract PDF Supplementary Material PubReader ePub: Background
Despite diabetes mellitus (DM) and pancreatitis being known risk factors for pancreatic cancer, patients with these conditions are not included in pancreatic cancer screening due to the low incidence of pancreatic cancer in these populations. This study aimed to determine the high-risk subgroup of patients with diabetes and pancreatitis that would benefit from pancreatic cancer screening.
Methods
A nested case-control study was conducted using data from the National Health Information Database of the Korean National Health Insurance Service. Patients were categorized into the following groups: type 2 diabetes mellitus only (T2DM-only), pancreatitis-only (PAN-only), T2DM followed by pancreatitis (T2DM-PAN), post-pancreatitis diabetes mellitus (PPDM), and no diabetes and no pancreatitis (NDNP). Conditional logistic regression was used to determine significant associations of each group with pancreatic cancer development risk.
Results
The risk of pancreatic cancer was significantly higher in the T2DM-PAN (adjusted odds ratio [AOR], 4.96; 95% confidence interval [CI], 4.48 to 5.49) and PPDM (AOR, 4.71; 95% CI, 4.12 to 5.37) groups than in the NDNP group. Compared to patients in the NDNP group, those with PPDM using insulin had a 17-fold increased risk (AOR, 16.72; 95% CI, 9.50 to 29.43), and individuals with PPDM who had diabetes for less than 3 years had a more than 8-fold increased risk of pancreatic cancer (AOR, 8.83; 95% CI, 5.99 to 13.01).
Conclusion
In patients with post-pancreatitis diabetes, insulin use or shorter duration of diabetes was associated with a higher risk of pancreatic cancer, suggesting that patients in these subgroups may require close monitoring for pancreatic cancer development.

Technology/Device
Comparison of Real-Time and Intermittently-Scanned Continuous Glucose Monitoring for Glycemic Control in Type 1 Diabetes Mellitus: Nationwide Cohort Study: Ji Yoon Kim, Seohyun Kim, Jae Hyeon Kim; Received March 28, 2024 Accepted October 30, 2024 Published online February 27, 2025; DOI: https://doi.org/10.4093/dmj.2024.0160 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
This study compares the association between real-time continuous glucose monitoring (rtCGM) and intermittently- scanned CGM (isCGM) and glycemic control in individuals with type 1 diabetes mellitus (T1DM) in a real-world setting.
Methods
Using data from the Korean National Health Insurance Service Cohort, individuals with T1DM managed by intensive insulin therapy were followed at 3-month intervals for 2 years after the initiation of CGM. The glycosylated hemoglobin (HbA1c) levels and coefficients of variation (CVs) of rtCGM and isCGM users were compared using independent two-sample t-test and a linear mixed model.
Results
The analyses considered 7,786 individuals (5,875 adults aged ≥19 years and 1,911 children and adolescents aged <19 years). Overall, a significant reduction in HbA1c level was observed after 3 months of CGM, and the effect was sustained for 2 years. The mean HbA1c level at baseline was higher in rtCGM users than in isCGM users (8.9%±2.7% vs. 8.6%±2.2%, P<0.001). However, from 3 to 24 months, rtCGM users had lower HbA1c levels than isCGM users at every time point (7.1%±1.2% vs. 7.5%±1.3% at 24 months, P<0.001 for all time points). In both adults and children, the greater reduction in HbA1c with rtCGM remained significant after adjusting for the baseline characteristics of the users. The CV also showed greater decrease with rtCGM than with isCGM.
Conclusion
In this large nationwide cohort study, the use of rtCGM was associated with a greater improvement in glycemic control, including HbA1c reduction, than the use of isCGM in both adults and children with T1DM.

Metabolic Risk/Epidemiology
Validating Multicenter Cohort Circular RNA Model for Early Screening and Diagnosis of Gestational Diabetes Mellitus: Shuo Ma, Yaya Chen, Zhexi Gu, Jiwei Wang, Fengfeng Zhao, Yuming Yao, Gulinaizhaer Abudushalamu, Shijie Cai, Xiaobo Fan, Miao Miao, Xun Gao, Chen Zhang, Guoqiu Wu; Received April 20, 2024 Accepted November 15, 2024 Published online February 21, 2025; DOI: https://doi.org/10.4093/dmj.2024.0205 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
Gestational diabetes mellitus (GDM) is a metabolic disorder posing significant risks to maternal and infant health, with a lack of effective early screening markers. Therefore, identifying early screening biomarkers for GDM with higher sensitivity and specificity is urgently needed.
Methods
High-throughput sequencing was employed to screen for key circular RNAs (circRNAs), which were then evaluated using reverse transcription quantitative polymerase chain reaction. Logistic regression analysis was conducted to examine the relationship between clinical characteristics, circRNA expression, and adverse pregnancy outcomes. The diagnostic accuracy of circRNAs for early and mid-pregnancy GDM was assessed using receiver operating characteristic curves. Pearson correlation analysis was utilized to explore the relationship between circRNA levels and oral glucose tolerance test results. A predictive model for early GDM was established using logistic regression.
Results
Significant alterations in circRNA expression profiles were detected in GDM patients, with hsa_circ_0031560 and hsa_ circ_0000793 notably upregulated during the first and second trimesters. These circRNAs were associated with adverse pregnancy outcomes and effectively differentiated GDM patients, with second trimester cohorts achieving an area under the curve (AUC) of 0.836. In first trimester cohorts, these circRNAs identified potential GDM patients with AUCs of 0.832 and 0.765, respectively. The early GDM prediction model achieved an AUC of 0.904, validated in two independent cohorts.
Conclusion
Hsa_circ_0031560, hsa_circ_0000793, and the developed model serve as biomarkers for early prediction or midterm diagnosis of GDM, offering clinical tools for early GDM screening.

Complications
Connection between Impaired Fasting Glucose or Type 2 Diabetes Mellitus and Sepsis: A 10-Year Observational Data from the National Health Screening Cohort: Eun Hwa Lee, Kyoung Hwa Lee, Kyu-na Lee, Yebin Park, Kyung Do Han, Sang Hoon Han; Received July 16, 2024 Accepted October 23, 2024 Published online February 17, 2025; DOI: https://doi.org/10.4093/dmj.2024.0387 [Epub ahead of print]

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Abstract PDF Supplementary Material PubReader ePub: Background
The mortality of sepsis without direct drugs is high. The association between prediabetes, based on a single fasting glucose (FG), or long-term type 2 diabetes mellitus (T2DM) and sepsis remains unclear.
Methods
Of the adults aged ≥20 years who were included in the National Health Screening Program (NHSP) in 2009, 40% were randomly sampled. After excluding patients with type 1 diabetes mellitus, with missing information, and who were diagnosed with sepsis during the wash-out (between 2001 and the NHSP) or 1-year lag period, a cohort comprised of 3,863,323 examinees. Body mass index (BMI) measurements, FG tests, and self-reported questionnaires on health-related behaviors were conducted. Individual information was followed up until 2020 and censored upon the first occurrence of sepsis or death. The incidence of sepsis was compared using a multivariable regression adjusted for age, sex, income, BMI, smoking, drinking, physical activity levels, and chronic diseases.
Results
The cohort was divided into those with normal FG (n=2,675,476), impaired fasting glucose (IFG) (n=890,402, 23.0%), T2DM <5 years (n=212,391, 5.5%), or T2DM for ≥5 years (n=85,054, 2.2%). The groups with IFG (adjusted hazard ratio [aHR], 1.03; 95% confidence interval [CI], 1.01 to 1.05), T2DM <5 years (aHR, 1.43; 95% CI, 1.40 to 1.47), and T2DM for ≥5 years (aHR, 1.82; 95% CI, 1.77 to 1.87) exhibited significantly higher incidence of sepsis (P<0.001), with the greatest risk in patients with T2DM aged <40 years (aHR, 1.96; 95% CI, 1.71 to 2.25).
Conclusion
Patients with long-standing and young-onset T2DM show a substantially high risk of sepsis, emphasizing the need for infection prevention and vaccination.

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