Abstract:Objective To investigate the change of serum leptin/adiponectin (L/A) ratio before and after treatment of first-episode schizophrenia and its correlation with treatment response.Methods A total of 100 patients with first-episode schizophrenia in our hospital from January 2016 to December 2018 were enrolled as the experimental group, and 50 healthy people during the same period were chosen as the control group. The general information about the selected subjects were collected and registered, including name, age, height, weight, and body mass index (BMI). Patients in the experimental group were treated with risperidone tablets and observed for 4 weeks, and they were tested for serum leptin (LEP) and adiponectin (APN) levels before and after four weeks of the treatment. These indicators of individuals in the control group were also detected on the following day after enrollment. Correlation between L/A ratio and Positive and Negative Syndrome Scale (PANSS) scores was analyzed.Results After 4 weeks of risperidone treatment, serum LEP level, L/A ratio, BMI and waist-to-hip ratio (WHR) increased, but serum APN level and PANSS scores decreased in the experimental group (P <0.05). Serum LEP level (r = -0.26, P = 0.009) and L/A ratio (r = -0.69, P = 0.000) were negatively correlated with PANSS scores, while serum APN level was positively correlated with PANSS scores (r = 0.34, P = 0.015). Besides, BMI was positively correlated with WHR (r = 0.43, P = 0.000).Conclusions The serum L/A ratio increases after treatment in patients with first-episode schizophrenia and shows a negative correlation with the efficacy of drug therapy.