Abstract:
BACKGROUND:While most of the second generation antipsychotic agents are associated with abnormal glucose metabolism, previous studies have shown that risperidone has relatively little effect upon blood glucose levels. This study aimed to explore the effect of risperidone on the glucose-regulating mechanism of patients with schizophrenia by using the oral glucose tolerance test (OGTT), measuring insulin and C-peptide levels. METHODS:Thirty inpatients with schizophrenia taking risperidone were studied. All the patients were given a simplified OGTT at baseline and six weeks after treatment. Plasma glucose, insulin, and C-peptide concentrations were measured at fasting, then 1 and 2h after OGTT respectively. Other data, including demographic characteristics and plasma drug concentrations, were also recorded. RESULTS:(1) There was no significant increase in the proportion of patients demonstrating abnormal plasma glucose levels compared with baseline (p=1.000, McNemar test); (2) risperidone was associated with elevated insulin concentrations (p=0.013), C-peptide levels (p=0.020), insulin/glucose ratio (p=0.020) and BMI (p<0.01); (3) no sex differences in glucose-related measures were observed. CONCLUSION:Risperidone treatment may be associated with alterations in glucose-regulating mechanisms in patients with schizophrenia.
journal_name
J Psychiatr Resjournal_title
Journal of psychiatric researchauthors
Chen Q,Cai ZJ,Mao PX,Zhai YM,Mitchell PB,Tang YLdoi
10.1016/j.jpsychires.2008.03.004subject
Has Abstractpub_date
2008-12-01 00:00:00pages
124-8issue
2eissn
0022-3956issn
1879-1379pii
S0022-3956(08)00058-7journal_volume
43pub_type
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