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Long-Term Risperidone Treatment Induces Visceral Adiposity Associated with Hepatic Steatosis in Mice: A Magnetic Resonance Approach

机译:长期利培酮治疗可引起小鼠内脏脂肪变性,并伴有肝脏脂肪变性:磁共振方法

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Although atypical antipsychotic drugs (APDs) have led to significant advances in the treatment of psychotic disorders, they still induce metabolic disturbances. We aimed at characterizing the metabolic consequences of a risperidone treatment and at establishing a link with noninvasive MR markers, in order to develop a tool for predicting symptoms of the metabolic syndrome. Fat deposition and liver morphometry were assessed by T1-weighted imaging. Fatty acid composition and fat accumulations in tissues were determined using MR spectroscopy with and without water suppression, respectively. Risperidone treatment induced a weight gain accompanied with metabolic disturbances such as hyperglycemic status, an increase in visceral adipose tissue (VAT), and liver fat depositions. Correlations using Methylene-Water Ratio (MWR) and Polyunsaturated Index (PUI) demonstrated a concomitant increase in the weight gain, VAT and liver fat depositions, and a decrease in the quantity of polyunsaturated fatty acids. These results were consistent with a hepatic steatosis state. We evaluated the ability of MR techniques to detect subtle metabolic disorders induced by APDs. Thus, our model and methodology offer the possibility to investigate APDs side effects in order to improve the health conditions of schizophrenic patients.
机译:尽管非典型抗精神病药(APDs)导致了精神病治疗的重大进展,但它们仍会引起代谢紊乱。我们旨在表征利培酮治疗的代谢后果,并建立与非侵入性MR标记的联系,以开发出可预测代谢综合征症状的工具。通过T1加权成像评估脂肪沉积和肝脏形态。分别在有水抑制和无水抑制的情况下使用MR光谱法测定组织中的脂肪酸组成和脂肪堆积。利培酮治疗可引起体重增加,并伴有代谢紊乱,例如血糖过高,内脏脂肪组织(VAT)增加和肝脂肪沉积。使用亚甲基水比(MWR)和多不饱和指数(PUI)进行的相关性表明,体重增加,增值税和肝脂肪沉积同时增加,多不饱和脂肪酸的数量减少。这些结果与肝脂肪变性状态一致。我们评估了磁共振技术检测由APD引起的细微代谢异常的能力。因此,我们的模型和方法为研究APD的副作用以改善精神分裂症患者的健康状况提供了可能性。

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