alexa Serum levels of PYY(1-36) peptide in patients with schizophrenia on clozapine monotherapy.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Metabolic Syndrome

Author(s): Wysokiski A, Kowalski ML, Koszewska I

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Abstract INTRODUCTION: The present study was undertaken to determine if patients with schizophrenia on clozapine monotherapy have lower serum levels of peptide YY [PYY(1-36)], which is an endogenous inhibitor of food intake, comparing to healthy controls. METHODS: Data for 24 patients (mean age 38.8 years) with paranoid schizophrenia on clozapine monotherapy and 24 healthy subjects (gender- and age-matched; mean age 39.9 years) were analyzed. RESULTS: Fasting serum levels of PYY(1-36) were lower in the clozapine group (178.4±138.4 vs. 277.4±218.1 pg/mL, p=0.034). In the whole study sample PYY(1-36) levels were lower in subjects with body mass index≥25 kg/m(2) (p=0.03) and in subjects with abdominal obesity defined using International Diabetes Foundation criteria (p=0.04). There were no significant differences for metabolic syndrome, smoking, impaired fasting glucose, dyslipidemia, and homeostatic model assessment (HOMA) defined insulin resistance. DISCUSSION: RESULTS suggest that weight is asso-ciated with levels of PYY. Patients on clozapine had higher body mass index, but not fat mass index or body weight, therefore lower levels of PYY(1-36) in patients taking clozapine may result from clozapine-induced weight gain and central -obesity. © Georg Thieme Verlag KG Stuttgart · New York. This article was published in Pharmacopsychiatry and referenced in Journal of Metabolic Syndrome

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