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Studying the Hypothalamic Insulin Signal to Peripheral Glucose Intolerance with a Continuous Drug Infusion System into the Mouse Brain
Published on: January 4, 2018
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Insulin action in brain regulates systemic metabolism and brain function
André Kleinridders1, Heather A Ferris1, Weikang Cai1
1Section on Integrative Physiology and Metabolism, Joslin Diabetes Center and Department of Medicine, Harvard Medical School, Boston, MA.
Diabetes
|June 17, 2014
Summary
Brain insulin signaling regulates metabolism and neuronal function. Disruptions are linked to metabolic syndrome, mood disorders, and neurodegenerative diseases like Alzheimer's.
Area of Science:
- Neuroendocrinology
- Metabolic Neuroscience
Background:
- Insulin receptors are present in the brain, influencing various physiological processes.
- Insulin signaling impacts peripheral metabolism, appetite, reproduction, and thermoregulation.
- Brain insulin action is crucial for neurotransmission, cholesterol synthesis, and mitochondrial health.
Purpose of the Study:
- To explore the multifaceted roles of insulin signaling within the brain.
- To investigate the consequences of disrupted brain insulin action.
Main Methods:
- Review of existing literature on insulin receptor distribution and function in the brain.
- Analysis of the impact of insulin signaling on neuronal pathways and metabolic regulation.
Main Results:
- Insulin modulates appetite, reproductive function, body temperature, and glucose metabolism.
- Brain insulin signaling affects neurotransmitter activity, cholesterol synthesis, and mitochondrial function.
- Impaired insulin action in the brain leads to neuronal dysfunction, impaired synaptogenesis, and tau protein phosphorylation.
Conclusions:
- Alterations in brain insulin signaling contribute to metabolic syndrome.
- Dysfunctional insulin pathways in the brain are implicated in mood disorders and neurodegenerative diseases, including Alzheimer's disease.
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