Endocrinology and Metabolism

Jung Hwan Cho (Cho JH)

3 Articles

Diabetes
Pioglitazone Attenuates Palmitate-Induced Inflammation and Endoplasmic Reticulum Stress in Pancreatic β-Cells: Seok-Woo Hong, Jinmi Lee, Jung Hwan Cho, Hyemi Kwon, Se Eun Park, Eun-Jung Rhee, Cheol-Young Park, Ki-Won Oh, Sung-Woo Park, Won-Young Lee; Endocrinol Metab. 2018;33(1):105-113. Published online March 21, 2018; DOI: https://doi.org/10.3803/EnM.2018.33.1.105

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Abstract PDF PubReader ePub Crossref - TDM

Background

The nuclear receptor peroxisome proliferator-activator gamma (PPARγ) is a useful therapeutic target for obesity and diabetes, but its role in protecting β-cell function and viability is unclear.

Methods

To identify the potential functions of PPARγ in β-cells, we treated mouse insulinoma 6 (MIN6) cells with the PPARγ agonist pioglitazone in conditions of lipotoxicity, endoplasmic reticulum (ER) stress, and inflammation.

Results

Palmitate-treated cells incubated with pioglitazone exhibited significant improvements in glucose-stimulated insulin secretion and the repression of apoptosis, as shown by decreased caspase-3 cleavage and poly (adenosine diphosphate [ADP]-ribose) polymerase activity. Pioglitazone also reversed the palmitate-induced expression of inflammatory cytokines (tumor necrosis factor α, interleukin 6 [IL-6], and IL-1β) and ER stress markers (phosphor-eukaryotic translation initiation factor 2α, glucose-regulated protein 78 [GRP78], cleaved-activating transcription factor 6 [ATF6], and C/EBP homologous protein [CHOP]), and pioglitazone significantly attenuated inflammation and ER stress in lipopolysaccharide- or tunicamycin-treated MIN6 cells. The protective effect of pioglitazone was also tested in pancreatic islets from high-fat-fed KK-Ay mice administered 0.02% (wt/wt) pioglitazone or vehicle for 6 weeks. Pioglitazone remarkably reduced the expression of ATF6α, GRP78, and monocyte chemoattractant protein-1, prevented α-cell infiltration into the pancreatic islets, and upregulated glucose transporter 2 (Glut2) expression in β-cells. Moreover, the preservation of β-cells by pioglitazone was accompanied by a significant reduction of blood glucose levels.

Conclusion

Altogether, these results support the proposal that PPARγ agonists not only suppress insulin resistance, but also prevent β-cell impairment via protection against ER stress and inflammation. The activation of PPARγ might be a new therapeutic approach for improving β-cell survival and insulin secretion in patients with diabetes mellitus

Citations

Citations to this article as recorded by

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Lifeng Zheng, Ximei Shen, Yun Xie, Hong Lian, Sunjie Yan, Shizhong Wang
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Chemical inducer of regucalcin attenuates lipopolysaccharide‐induced inflammatory responses in pancreatic MIN6 β‐cells and RAW264.7 macrophages
Tomiyasu Murata, Kazunori Hashimoto, Susumu Kohno, Chiaki Takahashi, Masayoshi Yamaguchi, Chihiro Ito, Itoigawa Masataka, Roji Kojima, Kiyomi Hikita, Norio Kaneda
FEBS Open Bio.2022; 12(1): 175. CrossRef
Targets for rescue from fatty acid-induced lipotoxicity in pancreatic beta cells
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Cardiovascular Prevention and Pharmacotherapy.2022; 4(2): 57. CrossRef
Analysis of changes in the proteomic profile of porcine corpus luteum during different stages of the oestrous cycle: effects of PPAR gamma ligands
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Activation of PPARγ Protects Obese Mice from Acute Lung Injury by Inhibiting Endoplasmic Reticulum Stress and Promoting Mitochondrial Biogenesis
Yin Tang, Ke Wei, Ling Liu, Jingyue Ma, Siqi Wu, Wenjing Tang, Stéphane Mandard
PPAR Research.2022; 2022: 1. CrossRef
Effect of Pioglitazone on endoplasmic reticulum stress regarding in situ perfusion rat model
Vivien Telek, Luca Erlitz, Ibitamuno Caleb, Tibor Nagy, Mónika Vecsernyés, Bálint Balogh, György Sétáló, Péter Hardi, Gábor Jancsó, Ildikó Takács
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Kexin Wang, Yixin Cui, Peng Lin, Zhina Yao, Yu Sun
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Pioglitazone even at low dosage improves NAFLD in type 2 diabetes: clinical and pathophysiological insights from a subgroup of the TOSCA.IT randomised trial
Giuseppe Della Pepa, Marco Russo, Marilena Vitale, Fabrizia Carli, Claudia Vetrani, Maria Masulli, Gabriele Riccardi, Olga Vaccaro, Amalia Gastaldelli, Angela A. Rivellese, Lutgarda Bozzetto
Diabetes Research and Clinical Practice.2021; 178: 108984. CrossRef
Radioprotective Effect of Pioglitazone Against Genotoxicity Induced by Ionizing Radiation in Healthy Human Lymphocytes
Roya Kazemi, Seyed J. Hosseinimehr
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Recent Insights Into Mechanisms of β-Cell Lipo- and Glucolipotoxicity in Type 2 Diabetes
Maria Lytrivi, Anne-Laure Castell, Vincent Poitout, Miriam Cnop
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Artemisinin and dihydroartemisinin promote β-cell apoptosis induced by palmitate via enhancing ER stress
Ke Chen, Hu Hua, Ziyang Zhu, Tong Wu, Zhanjun Jia, Qianqi Liu
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Mechanisms of impaired pancreatic β‑cell function in high‑fat diet‑induced obese mice: The role of endoplasmic reticulum stress
Xiaoqing Yi, Xuan Cai, Sisi Wang, Yanfeng Xiao
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Docosahexaenoic and Eicosapentaenoic Acids Prevent Altered-Muc2 Secretion Induced by Palmitic Acid by Alleviating Endoplasmic Reticulum Stress in LS174T Goblet Cells
Quentin Escoula, Sandrine Bellenger, Michel Narce, Jérôme Bellenger
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PPAR-γ agonist, pioglitazone, reduced oxidative and endoplasmic reticulum stress associated with L-NAME-induced hypertension in rats
Eman Soliman, Shereen F. Behairy, Nabila N. El-maraghy, Shimaa M. Elshazly
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Changes of MODY signal pathway genes in the endoplasmic reticulum stress in INS-1-3 cells
Yanan Dong, Shirui Li, Wenhui Zhao, Yanlei Wang, Tingting Ge, Jianzhong Xiao, Yukun Li, Herve Le Stunff
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Diabetes
The Association between Persistent Hypertriglyceridemia and the Risk of Diabetes Development: The Kangbuk Samsung Health Study: Yu Hyun Kwon, Seul-Ki Kim, Jung Hwan Cho, Hyemi Kwon, Se Eun Park, Hyung-Geun Oh, Cheol-Young Park, Won-Young Lee, Ki-Won Oh, Sung-Woo Park, Eun-Jung Rhee; Endocrinol Metab. 2018;33(1):55-61. Published online January 30, 2018; DOI: https://doi.org/10.3803/EnM.2018.33.1.55

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Abstract PDF PubReader ePub Crossref - TDM

Background

Hypertriglyceridemia is known to have an association with increased risks of insulin resistance and diabetes. The aim of this study was to investigate the risk of diabetes mellitus, according to changes in the concentrations of triglycerides, over time.

Methods

A total of 15,932 non-diabetic participants (mean age 43.2 years, 68% men) who attended five consecutive annual health check-ups at Kangbuk Samsung Hospital, between January 2010 and December 2014, were recruited. Participants were classified according to their triglyceride concentrations; normal (<150 mg/dL) and abnormal (≥150 mg/dL). According to the triglyceride levels in 2010 and 2012, subjects were divided into four groups: normal-normal, normal-abnormal, abnormal-normal, and abnormal-abnormal. The risk for incident diabetes was assessed in 2014.

Results

Among the total subjects, 67.5% belonged to the normal-normal group, 8.6% to the normal-abnormal group, 9.4% to the abnormal-normal group, and 14.5% to the abnormal-abnormal group. A total of 234 subjects (1.5%) were newly diagnosed with diabetes, between 2010 and 2014. Over 4 years, 1%, 1.5%, 2.1%, and 3.0% of the subjects developed diabetes in the normal-normal, normal-abnormal, abnormal-normal, and abnormal-abnormal groups, respectively. When the risk for incident diabetes was analyzed in the groups, after adjusting the confounding variables, a 1.58-fold increase in the risk of diabetes (95% confidence interval [CI], 1.10 to 2.26) was observed in the participants with persistent hypertriglyceridemia (abnormal-abnormal group). This was attenuated by further adjustments for body mass index (BMI) (hazard ratio, 1.25; 95% CI, 0.86 to 1.80).

Conclusion

In this large study population, persistent hypertriglyceridemia, over a period of 2 years, was significantly associated with the risk of incident diabetes, which was attenuated after adjustment for BMI.

Citations

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Variability, Mean, and Baseline Values of Metabolic Parameters in Predicting Risk of Type 2 Diabetes
Duong Duc Pham, Jaekyung Song, Yunwan Jeon, Ibrahimi Hajar, Chae Hun Leem
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Response: The Association between Persistent Hypertriglyceridemia and the Risk of Diabetes Development: The Kangbuk Samsung Health Study (Endocrinol Metab 2018;33:55–61, Yu Hyun Kwon et al.)
Eun-Jung Rhee, Yu Hyun Kwon
Endocrinology and Metabolism.2018; 33(3): 425. CrossRef
The Association between Persistent Hypertriglyceridemia and the Risk of Diabetes Development: The Kangbuk Samsung Health Study (Endocrinol Metab 2018;33:55–61, Yu Hyun Kwon et al.)
Mi Hae Seo
Endocrinology and Metabolism.2018; 33(2): 305. CrossRef

Clinical Study
Changes in Body Composition According to Age and Sex among Young Non-Diabetic Korean Adults: The Kangbuk Samsung Health Study: Seul-Ki Kim, Yu-Hyun Kwon, Jung Hwan Cho, Da Young Lee, Se Eun Park, Hyung-Geun Oh, Cheol-Young Park, Won-Young Lee, Ki-Won Oh, Sung-Woo Park, Eun-Jung Rhee; Endocrinol Metab. 2017;32(4):442-450. Published online November 21, 2017; DOI: https://doi.org/10.3803/EnM.2017.32.4.442

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Abstract PDF PubReader Crossref - TDM

Background

Age-related decreases in lean mass represent a serious health problem. We aimed to analyze the risks of rapid decreases in lean mass by age and sex in relatively young Korean adults during a 4-year follow-up study.

Methods

A total of 65,856 non-diabetic participants (59.5% men, mean age 39.1 years) in a health screening program were subjected to bioimpedance body composition analyses and metabolic parameter analyses at baseline and after 4 years. The participants were sub-divided according to age, and additionally to six groups by age and the degree of body weight change over the 4-year period. The actual changes in body weight, lean mass, and fat mass and the percent changes over the 4-year period were assessed.

Results

The percent change in lean mass decreased and the percent change of fat mass increased with increasing age in every age and sex group. However, the annual percent decrease in lean mass and percent increase in fat mass were significantly higher among women than among men (−0.26% vs. −0.15% and 0.34% vs. 0.42%, respectively; P<0.01). Participants who were older than 50 years and had a weight loss <−5% during the 4 years had significantly greater decreases in lean mass and smaller decreases in fat mass, compared to those who were younger than 50 years. An odds ratio analysis to determine the lowest quartile of the percent change in lean mass according to age group revealed that participants older than 60 years had a significantly increased risk of a rapid decrease in the lean mass percentage (2.081; 95% confidence interval, 1.678 to 2.581).

Conclusion

Even in this relatively young study population, the lean mass decreased significantly with age, and the risk of a rapid decrease in lean mass was higher among women than among men. Furthermore, the elderly exhibited a significantly more rapid decrease in lean mass, compared with younger participants.

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