Check nearby libraries
Buy this book
Although insulin resistance and beta-cell dysfunction are the hallmarks of type 2 diabetes (T2DM), whether insulin resistance can precipitate beta-cell dysfunction without a preexisting genetic beta-cell defect is unclear. We have examined the consequences of insulin resistance on the beta-cell in the MKR mouse, which expresses the M&barbelow;CK-KR-IGF-IR transgene, a dominant-negative insulin-like growth factor-1 receptor, in muscle. In this model, dominant-negative expression led to systemic insulin resistance, hyperglycemia and defects in insulin secretion. Despite the demand on insulin secretion, MKR mice displayed increased pancreatic insulin content and beta-cell mass, the latter mediated through beta-cell hyperplasia and hypertrophy. Enhancement of insulin sensitivity improved insulin secretion and beta-cell morphology. Our studies consequently demonstrate that insulin resistance can precipitate beta-cell dysfunction and compensatory changes in the beta-cell. However, this compensation is insufficient to prevent diabetes, demonstrating a mechanism through which insulin resistance can undermine beta-cell compensation, and lead to hyperglycemia.
Check nearby libraries
Buy this book
Showing 1 featured edition. View all 1 editions?
Edition | Availability |
---|---|
1
Insulin resistance precipitates beta-cell dysfunction and beta-cell expansion in a non-obese model of type 2 diabetes.
2005
in English
0494075082 9780494075081
|
aaaa
Libraries near you:
WorldCat
|
Book Details
Edition Notes
Source: Masters Abstracts International, Volume: 44-02, page: 0738.
Thesis (M.Sc.)--University of Toronto, 2005.
Electronic version licensed for access by U. of T. users.
GERSTEIN MICROTEXT copy on microfiche (2 microfiches).
The Physical Object
ID Numbers
Community Reviews (0)
Feedback?January 24, 2010 | Edited by WorkBot | add more information to works |
December 11, 2009 | Created by WorkBot | add works page |