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Isolation and Differentiation of Stromal Vascular Cells to Beige/Brite Cells
Published on: March 28, 2013
Minireview: new molecular mediators of glucocorticoid receptor activity in metabolic tissues
Rucha Patel1, Jasmine Williams-Dautovich, Carolyn L Cummins
1Department of Pharmaceutical Sciences (R.P., J.W-D., C.L.C.), University of Toronto, Toronto, Ontario, M5S 3M2, Canada; and Banting and Best Diabetes Centre (C.L.C.), Toronto, Ontario M5G 2C4 Canada.
Abstract:
The glucocorticoid receptor (GR) was one of the first nuclear hormone receptors cloned and represents one of the most effective drug targets available today for the treatment of severe inflammation. The physiologic consequences of endogenous or exogenous glucocorticoid excess are well established and include hyperglycemia, insulin resistance, fatty liver, obesity, and muscle wasting. However, at the molecular and tissue-specific level, there are still many unknown protein mediators of glucocorticoid response and thus, much remains to be uncovered that will help determine whether activation of the GR can be tailored to improve therapeutic efficacy while minimizing unwanted side effects. This review summarizes recent discoveries of tissue-selective modulators of glucocorticoid signaling that are important in mediating the unwanted side effects of therapeutic glucocorticoid use, emphasizing the downstream molecular effects of GR activation in the liver, adipose tissue, muscle, and pancreas.
Insights
Glucocorticoid receptor (GR) drugs effectively treat inflammation but cause side effects. Recent discoveries reveal tissue-specific modulators that could improve GR therapy by minimizing unwanted metabolic impacts.
Area of Science:
- Endocrinology and Molecular Medicine
- Pharmacology
Background:
- The glucocorticoid receptor (GR) is a key target for treating severe inflammation.
- Glucocorticoid excess causes well-known metabolic issues like hyperglycemia and obesity.
- Understanding molecular mediators of GR action is crucial for safer therapies.
Purpose of the Study:
- To review recent discoveries in tissue-selective modulators of glucocorticoid signaling.
- To highlight molecular effects of GR activation in specific tissues.
- To identify strategies for improving therapeutic efficacy while reducing side effects.
Main Methods:
- Literature review of recent research on glucocorticoid signaling.
- Focus on molecular mechanisms and tissue-specific effects.
- Emphasis on modulators impacting liver, adipose tissue, muscle, and pancreas.
Main Results:
- Identification of specific protein mediators influencing glucocorticoid response.
- Elucidation of downstream molecular effects of GR activation in key metabolic tissues.
- Understanding how these mediators contribute to unwanted side effects.
Conclusions:
- Tissue-selective modulators offer potential for tailored GR therapies.
- Targeting these modulators may improve treatment efficacy for inflammatory conditions.
- Minimizing metabolic side effects is achievable through a deeper understanding of GR signaling pathways.
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