XML Feed for RxPG News   Add RxPG News Headlines to My Yahoo!   Javascript Syndication for RxPG News

Research Health World General
 
  Home
 
   Health
 Aging
 Asian Health
 Events
 Fitness
 Food & Nutrition
 Happiness
 Men's Health
 Mental Health
 Occupational Health
 Parenting
 Public Health
 Sleep Hygiene
 Women's Health
 
   Healthcare
 Africa
 Australia
 Canada Healthcare
 China Healthcare
 India Healthcare
 New Zealand
 South Africa
 UK
 USA
 World Healthcare
 
   Latest Research
 Aging
 Alternative Medicine
 Anaethesia
 Biochemistry
 Biotechnology
 Cancer
 Cardiology
 Clinical Trials
 Cytology
 Dental
 Dermatology
 Embryology
 Endocrinology
  Diabetes
   Insulin Resistance
   NIDDM
 ENT
 Environment
 Epidemiology
 Gastroenterology
 Genetics
 Gynaecology
 Haematology
 Immunology
 Infectious Diseases
 Medicine
 Metabolism
 Microbiology
 Musculoskeletal
 Nephrology
 Neurosciences
 Obstetrics
 Ophthalmology
 Orthopedics
 Paediatrics
 Pathology
 Pharmacology
 Physiology
 Physiotherapy
 Psychiatry
 Radiology
 Rheumatology
 Sports Medicine
 Surgery
 Toxicology
 Urology
 
   Medical News
 Awards & Prizes
 Epidemics
 Launch
 Opinion
 Professionals
 
   Special Topics
 Ethics
 Euthanasia
 Evolution
 Feature
 Odd Medical News
 Climate
Search

Last Updated: Nov 18, 2006 - 1:55:25 PM

Insulin Resistance Channel
subscribe to Insulin Resistance newsletter

Latest Research : Endocrinology : Diabetes : Insulin Resistance

   DISCUSS   |   EMAIL   |   PRINT
Deletion of SOCS7 leads to enhanced insulin action and enlarged islets of langerhans
Sep 5, 2005 - 1:43:00 PM, Reviewed by: Dr.

The researchers generate SOCS-7-deficient mice and show that cells lacking SOCS-7 have increased IRS protein levels and prolonged IRS activation. SOCS-7 deficient mice are more insulin sensitive as measured by a glucose tolerance test and an insulin tolerance test. In addition, SOCS-7-deficient mice exhibit increased growth of pancreatic islets with increased fasting insulin levels and hypoglycemia. As one of the only mouse knockout models featuring increased insulin sensitivity, these data suggest that SOCS-7 is a potent regulator of glucose homeostasis and insulin signaling.

 
Insulin resistance is a fundamental factor in non-insulin-dependent diabetes. Prolonged activation of the insulin receptor, inflammation, and excessive insulin levels can induce insulin resistance by decreasing levels of insulin receptor substrate (IRS) proteins.

However, the mechanism(s) underlying the destruction of IRS proteins and subsequent resistance to insulin have not been well defined. Proteins of the SOCS family have been implicated in the negative regulation of insulin signaling and also regulate cytokine signaling by targeting proteins for degradation by the proteasome. In particular, the function for the SOCS-7 protein was previously unclear.

In a study appearing online on August 25 in advance of print publication of the September 1 issue of the Journal of Clinical Investigation, Paul Rothman and colleagues from the University of Iowa demonstrate that SOCS-7 regulates insulin signaling by associating with several components of the insulin-signaling cascade.

The researchers generate SOCS-7-deficient mice and show that cells lacking SOCS-7 have increased IRS protein levels and prolonged IRS activation. SOCS-7 deficient mice are more insulin sensitive as measured by a glucose tolerance test and an insulin tolerance test. In addition, SOCS-7-deficient mice exhibit increased growth of pancreatic islets with increased fasting insulin levels and hypoglycemia. As one of the only mouse knockout models featuring increased insulin sensitivity, these data suggest that SOCS-7 is a potent regulator of glucose homeostasis and insulin signaling.
 

- September 1 issue of the Journal of Clinical Investigation
 

TITLE: Deletion of SOCS7 leads to enhanced insulin action and enlarged islets of langerhans

 
Subscribe to Insulin Resistance Newsletter
E-mail Address:

 

AUTHOR CONTACT:
Paul B. Rothman
University of Iowa, Iowa City, IA USA
Phone: 319 384 5424; Fax: 319 356 8608; E-mail: [email protected]


Related Insulin Resistance News
PAI-1 is the link between diabetes and cardiovascular disease
Insulin inhibits resistin expression and secretion
Insulin resistance in early teens may predict diabetes
Race may be risk factor for insulin resistance
Elevation of fat-derived molecule RBP4 foretells early insulin resistance
Insulin Resistance Linked to Pancreatic Cancer
Deletion of SOCS7 leads to enhanced insulin action and enlarged islets of langerhans
Insulin Resistance May Be the Result of Mitochondrial Dysfunction


For any corrections of factual information, to contact the editors or to send any medical news or health news press releases, use feedback form

Top of Page

 

© Copyright 2004 onwards by RxPG Medical Solutions Private Limited
Contact Us