Diabetes & Metabolism Journal

Original Articles

Metabolic Risk/Epidemiology
Insulin Resistance Increases Serum Immunoglobulin E Sensitization in Premenopausal Women: Seung Eun Lee, Ji Yeon Baek, Kyungdo Han, Eun Hee Koh; Diabetes Metab J. 2021;45(2):175-182. Published online April 14, 2020; DOI: https://doi.org/10.4093/dmj.2019.0150

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Background

Although studies have shown that obesity is associated with aeroallergen sensitization (atopy), controversy still exists. We aimed to investigate the association between metabolic status, obesity, and atopy stratified by sex and menopausal status.

Methods

A total of 1,700 adults from the 2010 Korean National Health and Nutrition Examination Survey were classified into metabolically healthy nonobese (MHNO), metabolically unhealthy nonobese (MUNO), metabolically healthy obese (MHO), and metabolically unhealthy obese (MUO) by body mass index and insulin resistance. Atopy was defined as a positive response to at least one aeroallergen. Multiple regression analysis was used to evaluate the risk of immunoglobulin E (IgE) elevation or atopy in relation to the degree of metabolic abnormality and obesity.

Results

In premenopausal women, total IgE was positively correlated with obesity and insulin resistance. MUNO participants had a higher risk of having elevated total IgE compared to MHNO participants (odds ratio [OR], 2.271; 95% confidence interval [CI], 1.201 to 4.294), while MHO participants did not show a significant difference (OR, 1.435; 95% CI, 0.656 to 3.137) in premenopausal women. MUNO, but not MHO was also associated with atopy (OR, 2.157; 95% CI, 1.284 to 3.625). In men and postmenopausal women, there was no significant difference between metabolic status, obesity, and atopy among groups.

Conclusion

Increased insulin resistance is associated with total IgE and atopy in premenopausal women but not in postmenopausal women or men.

Citations

Citations to this article as recorded by

Is There a Relationship between Insulin Resistance and Eosinophil, Inflammatory Parameters Neutrophil to lymphocyte ratio, C-Reactive Protein Values?
Meltem YİĞİT, Özgür OLUKMAN
Medical Records.2024; 6(1): 32. CrossRef

Basic Research
Inhibition of Ceramide Accumulation in Podocytes by Myriocin Prevents Diabetic Nephropathy: Chang-Yun Woo, Ji Yeon Baek, Ah-Ram Kim, Chung Hwan Hong, Ji Eun Yoon, Hyoun Sik Kim, Hyun Ju Yoo, Tae-Sik Park, Ranjan Kc, Ki-Up Lee, Eun Hee Koh; Diabetes Metab J. 2020;44(4):581-591. Published online November 4, 2019; DOI: https://doi.org/10.4093/dmj.2019.0063

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Abstract PDF PubReader ePub

Background

Ceramides are associated with metabolic complications including diabetic nephropathy in patients with diabetes. Recent studies have reported that podocytes play a pivotal role in the progression of diabetic nephropathy. Also, mitochondrial dysfunction is known to be an early event in podocyte injury. Thus, we tested the hypothesis that ceramide accumulation in podocytes induces mitochondrial damage through reactive oxygen species (ROS) production in patients with diabetic nephropathy.

Methods

We used Otsuka Long Evans Tokushima Fatty (OLETF) rats and high-fat diet (HFD)-fed mice. We fed the animals either a control- or a myriocin-containing diet to evaluate the effects of the ceramide. Also, we assessed the effects of ceramide on intracellular ROS generation and on podocyte autophagy in cultured podocytes.

Results

OLETF rats and HFD-fed mice showed albuminuria, histologic features of diabetic nephropathy, and podocyte injury, whereas myriocin treatment effectively treated these abnormalities. Cultured podocytes exposed to agents predicted to be risk factors (high glucose, high free fatty acid, and angiotensin II in combination [GFA]) showed an increase in ceramide accumulation and ROS generation in podocyte mitochondria. Pretreatment with myriocin reversed GFA-induced mitochondrial ROS generation and prevented cell death. Myriocin-pretreated cells were protected from GFA-induced disruption of mitochondrial integrity.

Conclusion

We showed that mitochondrial ceramide accumulation may result in podocyte damage through ROS production. Therefore, this signaling pathway could become a pharmacological target to abate the development of diabetic kidney disease.

Citations

Citations to this article as recorded by

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