منابع مشابه
Activators and inhibitors of lens aldose reductase.
Aldose reductase in a highly purified state is unstable. It requires the presence of thiol groups to maintain it in an active form. The enzyme apparently exists in 3 forms, only one of which is active. Tetramethylene glutaric acid (TMG) is an effective aldose reductase inhibitor. However, a relatively high level of TMG is needed to depress dulcitol synthesis in the lens incubated in a galactose...
متن کاملIsolation and Properties of Lens Aldose Reductase.
Exposure of the lens of the eye to a high concentration of an aldose, such as n-glucose, n-galactose, or n-xylose, results in the accumulation of the corresponding sugar alcohols. The high concentration which t.hese alcohols reach within the lens fibers appears to be responsible for t,he loss of clarity of the lens that is observed in experimental sugar cataracts (1). The reduced triphosphopyri...
متن کاملPenetration and binding of aldose-reductase inhibitors in the lens.
Diffusion, partitioning, and binding of two aldose-reductase inhibitors (ARI) in the rat lens were investigated under in vitro conditions. A lipophilic ARI (CT-112) and a hydrophilic ARI (AD-5467) were used as model drugs. Under lens-uptake conditions, the drug concentration in the lens increased rapidly during the initial 10 hr and reached steady state (equilibrium) after 24 hr. Despite the eq...
متن کاملAldose reductase in early streptozotocin-induced diabetic rat lens.
The present study investigates the status of lens aldose reductase in the early streptozotocin-induced diabetic rat. Aldose reductase protein concentration, protein synthesis, and enzyme activity was assayed at 3 days and 14 days post-streptozotocin injection. Our results indicated that there was no significant difference between normal (control) and diabetic rat lenses in these parameters duri...
متن کاملInhibition of aldose reductase prevents lipopolysaccharide-induced inflammatory response in human lens epithelial cells.
PURPOSE Bacterial infections are one of the major causes of human eye disease. Because the bacterial endotoxin lipopolysaccharide (LPS) is known to cause cytotoxicity through oxidative stress and an earlier study has shown that aldose reductase (AR) mediates oxidative stress signals, the purpose of this study was to investigate the anti-inflammatory effects of AR inhibition on LPS-induced activ...
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ژورنال
عنوان ژورنال: Chemico-Biological Interactions
سال: 2019
ISSN: 0009-2797
DOI: 10.1016/j.cbi.2019.04.021