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pubmed-article:1539030pubmed:abstractTextTo determine whether diabetes alters chromatin structure in vivo, micrococcal nuclease digestion kinetics were analyzed in cerebral cortical and hepatic nuclei of streptozotocin-induced diabetic rats. Cerebral nuclei of diabetic rats maintained for 6 weeks were less susceptible to micrococcal nuclease digestion compared with control rats. Insulin treatment reversed diabetes-related changes in nuclease digestion kinetics. There were no changes in the kinetics of digestion in hepatic nuclei. The reduced digestibility of cerebral DNA in diabetes could not be attributed to altered DNA fluorescence spectra, or altered distribution of most abundant chromatin proteins that were either solubilized or that remained insoluble immediately following nuclease digestion. It is concluded that chronic, uncontrolled hyperglycemia can alter chromatin structure of some tissues in vivo, and this change is probably related to subtle alterations in DNA-protein interactions.lld:pubmed
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pubmed-article:1539030pubmed:year1992lld:pubmed
pubmed-article:1539030pubmed:articleTitleAltered chromatin structure of cerebral nuclei in experimental diabetes mellitus.lld:pubmed
pubmed-article:1539030pubmed:affiliationTucson VA Medical Center, Arizona.lld:pubmed
pubmed-article:1539030pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:1539030pubmed:publicationTypeResearch Support, U.S. Gov't, Non-P.H.S.lld:pubmed
pubmed-article:1539030pubmed:publicationTypeResearch Support, Non-U.S. Gov'tlld:pubmed