Rapid leptin elevation after initiation of olanzapine?
Hsuan-Chi Wang1, Po See Chen, I Hui Lee
1Department of Psychiatry, National Cheng Kung University Hospital, Tainan, Taiwan, ROC.
Neuropsychobiology
|February 23, 2007
Summary
Olanzapine treatment may increase leptin levels before weight gain occurs in schizophrenia patients. Higher baseline leptin predicted less weight gain during olanzapine therapy.
Area of Science:
- Neuroscience
- Endocrinology
- Pharmacology
Background:
- Olanzapine is an antipsychotic medication commonly associated with significant weight gain.
- Elevated circulating leptin levels are another known side effect of olanzapine treatment.
Purpose of the Study:
- To investigate the temporal relationship between olanzapine initiation, changes in circulating leptin levels, and body weight alterations.
- To examine if baseline leptin levels predict weight gain in patients receiving olanzapine.
Main Methods:
- A preliminary study involving 9 patients with schizophrenia undergoing olanzapine treatment.
- Monitoring of circulating leptin levels for 2 weeks post-initiation of olanzapine.
- Correlation analysis between leptin level changes and body weight alterations, controlling for sex.
Main Results:
- Olanzapine treatment appeared to induce a surge in circulating leptin levels preceding observable weight gain.
- A significant inverse correlation was found between pretreatment leptin levels and subsequent weight gain (r = -0.93; p < 0.05).
- Higher baseline leptin levels predicted lower weight gain in patients treated with olanzapine.
Conclusions:
- Circulating leptin levels may serve as an early indicator of olanzapine-induced metabolic changes.
- Leptin's role in mediating olanzapine-associated weight gain warrants further investigation.
- Pretreatment leptin levels could potentially identify individuals at lower risk for substantial weight gain during olanzapine therapy.
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