Diabetes & metabolism

PMID: Abstract Obesity is associated with lower serum 25 OH D level via several mechanisms including sequestration of fat soluble vitamin D in increased fat mass. Since obesity is the major cause of insulin resistance and type 2 diabetes, lower serum 25 OH D level is also associated with these conditions.

Modeling long-term diabetes and related complications in rats J Pharmacol Toxicol Methods. Mar-Apr ; Epub Nov Gyömrői út Electronic address: erika.

DOI: The aims of this study were to establish a model of long-term diabetes with sustained medium scale hyperglycemia and characterize the pathological changes detectable after 4months, with particular respect to dependence on diabetes & metabolism degree of hyperglycemia. Methods: Streptozotocin-induced diabetic CFY rats were subjected to four different insulin substitution protocols to achieve different levels of glycemic control Diabetic groups.

Diabetes & metabolism were investigated by ophthalmoscopy, kidney function by urine analysis, and neuropathy by functional tests.

Retinal and renal morphological evaluations were performed by histology, immuno-histochemistry and electron microscopy. Discussion: We established a treatment protocol in rats enabling complex investigation of diabetic retinopathy, nephropathy and neuropathy on a long-term period.

Clearly hyperglycemic dependent parameters of these complications serve as good outcome measures for preclinical diabetes & metabolism. Our results provide a useful basis for designing studies for testing preventative treatments as well as other translational medical research in this field.

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Keywords: Anterior segment neovascularization; Chronic model; Cold allodynia; Diabetic nephropathy; Diabetic neuropathy; Diabetic retinopathy; Drug development; Insulin implant; Preclinical model; Streptozotocin.

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