Journal
ISLETS
Volume 6, Issue 5-6, Pages -Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/19382014.2014.998099
Keywords
islets; insulin resistance; hyperinsulinemia; hypertrophy; WNIN/GR-Ob mutant rats
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Funding
- ICMR Junior Research Fellowship [Three/1/3/JRF-2009/MPD]
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WNIN/GR-Ob mutant rat is a novel animal model to study metabolic syndrome (obesity, insulin resistance, hyperinsulinemia, impaired glucose tolerance and cardiovascular diseases). We have investigated the islet characteristics of obese mutants at different age groups (1, 6 and 12 months) to assess the islet changes in response to early and chronic metabolic stress. Our data demonstrates altered islet cell morphology and function (hypertrophy, fibrotic lesions, vacuolation, decreased stimulation index, increased TNF alpha, ROS and TBARS levels) in mutants as compared to controls. Furthermore, network analysis (gene-gene interaction) studied in pancreas demonstrated increased inflammation as a key factor underlying obesity/metabolic syndrome in mutants. These observations pave way to explore this model to understand islet adaptation in response to metabolic syndrome.
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