- Diabetes, Obesity and Metabolism
- Stimulation of Alpha-1-Adrenergic Receptor Ameliorates Obesity-Induced Cataracts by Activating Glycolysis and Inhibiting Cataract-Inducing Factors
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Yong-Jik Lee, Yoo-Na Jang, Hyun-Min Kim, Yoon-Mi Han, Hong Seog Seo, Youngsub Eom, Jong-suk Song, Ji Hoon Jeong, Tae Woo Jung
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Endocrinol Metab. 2022;37(2):221-232. Published online March 23, 2022
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DOI: https://doi.org/10.3803/EnM.2021.1237
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 Abstract
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- Background
Obesity, the prevalence of which is increasing due to the lack of exercise and increased consumption of Westernized diets, induces various complications, including ophthalmic diseases. For example, obesity is involved in the onset of cataracts.
Methods
To clarify the effects and mechanisms of midodrine, an α1-adrenergic receptor agonist, in cataracts induced by obesity, we conducted various analytic experiments in Otsuka Long-Evans Tokushima Fatty (OLETF) rats, a rat model of obesity.
Results
Midodrine prevented cataract occurrence and improved lens clearance in OLETF rats. In the lenses of OLETF rats treated with midodrine, we observed lower levels of aldose reductase, tumor necrosis factor-α, and sorbitol, but higher levels of hexokinase, 5’-adenosine monophosphate-activated protein kinase-alpha, adenosine 5´-triphosphate, peroxisome proliferator-activated receptordelta, peroxisome proliferator-activated receptor gamma coactivator 1-alpha, superoxide dismutase, and catalase.
Conclusion
The ameliorating effects of midodrine on cataracts in the OLETF obesity rat model are exerted via the following three mechanisms: direct inhibition of the biosynthesis of sorbitol, which causes cataracts; reduction of reactive oxygen species and inflammation; and (3) stimulation of normal aerobic glycolysis.
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Citations
Citations to this article as recorded by  - α1-Adrenergic Receptors: Insights into Potential Therapeutic Opportunities for COVID-19, Heart Failure, and Alzheimer’s Disease
Dianne M. Perez
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Freek Haerkens, Charlotte Kikken, Laurens Kirkels, Monique van Amstel, Willemijn Wouters, Els van Doornmalen, Christof Francke, Samantha Hughes
Heliyon.2022; 8(8): e10108. CrossRef
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