In spite of all advances in the understanding of chronic diabetic complications, diabetic retinopathy remains a significant clinical problem. The pathogenetic mechanisms leading to the development of diabetic retinopathy is indeed complex. Multiple interactive mechanisms may come into play leading to cellular damage and adaptive changes leading to the development of this devastating complicatio...

Old age is accompanied by a number of pathological eye conditions. Cataract is the most common age-related eye complication. Because the lens becomes naturally more opaque over time, aging is the most important risk factor for developing cataract, which is a major cause of blindness in the world. Cataractogenesis is also one of the earliest secondary complications of diabetes mellitus. The lens...

We describe a synthetic sequence that allows for the preparation of optically active trans-1,2-diol monosilyl ether derivatives from ketones, providing a new means for retrosynthetic simplification of differentiated diol and polyol targets. The sequence involves silyl enol ether formation, Shi asymmetric epoxidation, and then regio- and stereospecific addition of hydride, methide, or higher alk...

PURPOSE Dogs fed a diet containing 30% galactose experience retinal vascular changes similar to those in human diabetic retinopathy, with selective pericyte loss as an initial lesion. In the present study the relationship among reduced nicotinamide adenine dinucleotide phosphate (NADPH)-dependent reductases, polyol formation, and flux through the polyol pathway in cultured dog retinal capillary...

BACKGROUND Peritoneal dialysis with glucose- and lactate-containing dialysis solutions stimulates peritoneal angiogenesis and fibrosis. These serious side effects can also be induced by chronic peritoneal exposure to dialysis solutions in nonuremic rats. The high glucose concentrations of the dialysis solutions may saturate physiological glucose metabolism pathways and stimulate the polyol path...

Introduction: Different dosimetric modalities (e.g., ionization chambers, semiconductors, TLDs, radiographic films) often have some problems determining isodose curves and percentage depth doses in high dose gradient regions. Research has been ongoing to develop portable high resolution dosimetry devices with accurate absolute dosimetry capabilities and easy data analysis. The ‘PRESAGE’ dosimet...

The present study was performed toevaluate the effect of aqueous-methanolic extract of Osbeckia chinensis roots, on the polyol pathway enzymes i.e., aldose reductase (AR) and sorbitol dehydrogenase (SDH) in normoglycemic and diabetic mice of two different age groups (sixand one-month old). Polyol pathway under hyperglycemic condition has been associated with the pathogenesis of diabetic complic...