Mice with AS160 Mutation Have Glucose Intolerance and Insulin Sensitivity Issues
Author Information
Author(s): Chen Shuai, Wasserman David H., MacKintosh Carol, Sakamoto Kei
Primary Institution: MRC Protein Phosphorylation Unit, College of Life Sciences, University of Dundee
Hypothesis
14-3-3 binding to AS160 regulates whole-body glucose homeostasis in response to insulin.
Conclusion
The AS160 knockin mice exhibit reduced glucose disposal and insulin sensitivity due to impaired GLUT4 trafficking.
Supporting Evidence
- The AS160 knockin mice displayed impaired glucose disposal and insulin sensitivity.
- Insulin-stimulated glucose transport and GLUT4 content were reduced in isolated muscles.
- The knockin mice had a 25% increase in blood glucose response area under the curve during glucose tolerance tests.
Takeaway
Mice with a specific genetic change have trouble using sugar from their blood, which is important for energy. This is because their bodies can't move a sugar transporter called GLUT4 to the right place when they need it.
Methodology
The study involved generating AS160 Thr649Ala knockin mice and assessing their glucose tolerance and insulin sensitivity through various tests including hyperinsulinemic-euglycemic clamps and glucose uptake assays.
Potential Biases
Potential bias in interpreting the physiological relevance of findings from ex vivo and in vivo experiments.
Limitations
The study does not explore the long-term effects of the AS160 mutation on glucose metabolism or the potential compensatory mechanisms in other tissues.
Participant Demographics
The study involved male mice aged 8 to 16 weeks.
Statistical Information
P-Value
p=0.128
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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