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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
Insulin signaling effects on memory and mood.
1Department of Pharmacology, Physiology and Neuroscience, School of Medicine, University of South Carolina, 6439 Garners Ferry Road, Columbia, SC 29208, USA. preagan@med.sc.edu
Current Opinion in Pharmacology
|November 21, 2007
Summary
Obesity and diabetes accelerate brain aging, leading to cognitive deficits and increased risk of depression. These conditions impact the central nervous system, particularly the hippocampus, affecting synaptic plasticity and brain structure.
Area of Science:
- Neuroscience
- Endocrinology
- Metabolic Disorders
Background:
- The global obesity and diabetes epidemic presents significant healthcare challenges with socio-economic impacts.
- Complications extend to the central nervous system (CNS), affecting the hippocampus, which is vulnerable to hyperglycemia and insulin resistance.
- Diabetes-related deficits in hippocampal synaptic plasticity and cerebral atrophy are observed, mirroring findings in experimental models.
Purpose of the Study:
- To investigate the neurological complications of diabetes and obesity phenotypes.
- To explore the link between diabetes, stress-related disorders, and accelerated brain aging.
- To hypothesize common mechanistic mediators in the etiology of neurological complications.
Main Methods:
- Review of existing literature on diabetes, obesity, CNS complications, and cognitive function.
- Analysis of neuroimaging studies in diabetic patients and pre-clinical models.
- Examination of insulin receptor (IR) signaling and hypothalamic-pituitary-adrenal (HPA) axis function in relation to neurological deficits.
Main Results:
- Diabetes and obesity phenotypes are associated with accelerated brain aging.
- Neuroanatomical changes, including cerebral atrophy, are evident in diabetic patients.
- Impaired IR signaling and HPA axis function contribute to neurological complications.
Conclusions:
- Diabetes and obesity phenotypes lead to accelerated brain aging, resulting in neuropsychological deficits.
- There is increased vulnerability to co-morbidities like depressive illness due to these neurological changes.
- Common mechanistic mediators may link diabetes, stress, and mood disorders.
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