{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T17:45:17Z","timestamp":1792431917097,"version":"4.5.0"},"reference-count":84,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2007,7,26]],"date-time":"2007-07-26T00:00:00Z","timestamp":1185408000000},"content-version":"vor","delay-in-days":206,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"DOI":"10.13039\/100004319","name":"Pfizer","doi-asserted-by":"publisher","award":["ARI-809"],"award-info":[{"award-number":["ARI-809"]}],"id":[{"id":"10.13039\/100004319","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001067","name":"Juvenile Diabetes Research Foundation Australia","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001067","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Diabetes Research"],"published-print":{"date-parts":[[2007,1]]},"abstract":"<jats:p>The polyol pathway is a two\u2010step metabolic pathway in which glucose is reduced to sorbitol, which is then converted to fructose. It is one of the most attractive candidate mechanisms to explain, at least in part, the cellular toxicity of diabetic hyperglycemia because (i) it becomes active when intracellular glucose concentrations are elevated, (ii) the two enzymes are present in human tissues and organs that are sites of diabetic complications, and (iii) the products of the pathway and the altered balance of cofactors generate the types of cellular stress that occur at the sites of diabetic complications. Inhibition (or ablation) of aldose reductase, the first and rate\u2010limiting enzyme in the pathway, reproducibly prevents diabetic retinopathy in diabetic rodent models, but the results of a major clinical trial have been disappointing. Since then, it has become evident that truly informative indicators of polyol pathway activity and\/or inhibition are elusive, but are likely to be other than sorbitol levels if meant to predict accurately tissue consequences. The spectrum of abnormalities known to occur in human diabetic retinopathy has enlarged to include glial and neuronal abnormalities, which in experimental animals are mediated by the polyol pathway. The endothelial cells of human retinal vessels have been noted to have aldose reductase. Specific polymorphisms in the promoter region of the aldose reductase gene have been found associated with susceptibility or progression of diabetic retinopathy. This new knowledge has rekindled interest in a possible role of the polyol pathway in diabetic retinopathy and in methodological investigation that may prepare new clinical trials. Only new drugs that inhibit aldose reductase with higher efficacy and safety than older drugs will make possible to learn if the resilience of the polyol pathway means that it has a role in human diabetic retinopathy that should not have gone undiscovered.<\/jats:p>","DOI":"10.1155\/2007\/61038","type":"journal-article","created":{"date-parts":[[2007,8,7]],"date-time":"2007-08-07T04:54:17Z","timestamp":1186462457000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":369,"title":["The Polyol Pathway as a Mechanism for Diabetic Retinopathy: Attractive, Elusive, and Resilient"],"prefix":"10.1155","volume":"2007","author":[{"given":"Mara","family":"Lorenzi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2007,7,26]]},"reference":[{"key":"e_1_2_1_1_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM197304192881609"},{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM199309303291401"},{"key":"e_1_2_1_3_2","first-page":"S27","article-title":"Implications of the United Kingdom prospective diabetes study","volume":"22","author":"American Diabetes Association","year":"1999","journal-title":"Diabetes Care"},{"key":"e_1_2_1_4_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.287.19.2563"},{"key":"e_1_2_1_5_2","series-title":"International Review of Neurobiology","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1016\/S0074-7742(02)50082-9","volume-title":"Neurobiology of Diabetic Neuropathy","author":"Oates P. 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