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Genetic Manipulation of Cerebellar Granule Neurons In Vitro and In Vivo to Study Neuronal Morphology and Migration
Published on: March 17, 2014
Cerebellin1 is a novel orexigenic peptide
J V Gardiner1, K E Beale, D Roy
1Department of Investigative Medicine, Hammersmith Hospital, Imperial College London, London, UK.
Diabetes, Obesity & Metabolism
|October 6, 2010
Summary
Cerebellin1 (Cbln1) increases food intake and stimulates neuropeptide Y release in rats, suggesting it is a novel appetite-regulating peptide. This peptide may play a role in appetite control within the hypothalamus.
Area of Science:
- Neuroendocrinology
- Appetite Regulation
Background:
- Cerebellin1 (Cbln1) is highly expressed in the hypothalamus, a key brain region for appetite control.
- The specific role of Cbln1 in regulating food intake remains largely unknown.
Purpose of the Study:
- To investigate the effect of Cbln1 on appetite regulation in a rat model.
- To explore the underlying mechanisms of Cbln1's action on food intake.
Main Methods:
- Intracerebroventricular (ICV) injection of Cbln1 in male Wistar rats to assess food intake, behavior, and hormone levels.
- In vitro analysis of Cbln1's effect on hypothalamic neuropeptide release using explants.
- Measurement of hypothalamic Cbln1 mRNA expression in fasted rats.
Main Results:
- ICV Cbln1 administration significantly increased food intake without adverse effects.
- Cbln1 injection led to a significant reduction in plasma thyroid-stimulating hormone (TSH) levels.
- Cbln1 stimulated the release of neuropeptide Y (NPY) from hypothalamic explants.
- Fasting increased hypothalamic Cbln1 mRNA expression in the ventromedial nucleus.
Conclusions:
- Cbln1 acts as a novel orexigenic peptide, promoting appetite.
- The orexigenic effect of Cbln1 may be mediated through the hypothalamic neuropeptide Y (NPY) system.
- Cbln1 is implicated in the neuroendocrine regulation of appetite.
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