目的 探究体成分变化对肥胖患者肾小球高滤过的影响。方法 根据纳入排除标准，连续收集在中南大学湘雅二医院营养科及代谢内分泌科就诊的肥胖患者（体质指数≥28 kg/m²），对其随访3个月以上，纳入体质量减轻≥5%的患者，记录一般人口学、人体测量学、体脂率（BFP）、体脂肪量（BFM）、内脏脂肪面积（VFA）和骨骼肌量（SMM）等体成分和实验室检验数据，计算估计肾小球滤过率（eGFR）。肾小球高滤过被定义为eGFR大于普通人群第95个百分位数，根据此标准分为肾小球高滤过组和正常滤过组，比较组间一般人口学资料、生化指标及体成分的差异，绘制限制性立方样条图分析体成分的变化与eGFR变化之间的非线性关联。结果 （1）共收集85例肥胖患者初复诊资料，其中肾小球正常滤过患者43例，肾小球高滤过患者42例，男性35例，女性50例；（2）单因素分析提示肾小球高滤过患者减重前后eGFR差异有统计学意义［143.34 mL/（min·1.73 m²） vs 125.68 mL/（min·1.73 m²）；（3）非线性相关分析结果显示肥胖肾小球高滤过患者eGFR的变化与VFA的变化相关（P=0.015 1），与BFP的变化相关（P=0.022 6）。结论 肥胖患者减重后，随着VFA和BFP的下降可能改善肾小球高滤过。

    Objective This study aimed to investigate the impact of alterations in body composition on glomerular hyperfiltration in obese patients．Methods According to predefined inclusion and exclusion criteria，obese patients（body mass index ≥28 kg/m2）from the department of clinical nutrition and the department of metabolism and endocrinology at Second Xiangya Hospital of Central South University were consecutively enrolled．Patients who achieved a weight loss of ≥5% after more than three months of follow-up were included．Data on general demographics，anthropometric measurements，body composition parameters-including body fat percent（BFP），body fat mass（BFM），visceral fat area（VFA），and skeletal muscle mass（SMM）-and laboratory test results were collected．The estimated glomerular filtration rate（eGFR）was calculated．Glomerular hyperfiltration was defined as an eGFR greater than the 95th percentile for the general population．Based on this criterion，patients were categorized into a hyperfiltration group and a normofiltration group．Differences in demographic characteristics，biochemical indices，and body composition parameters between the two groups were compared．Restricted cubic spline curves were plotted to analyze the non-linear relationship between changes in body composition and changes in eGFR．Results （1）A total of 85 obese patients（35 males and 50 females） with initial and follow-up data were included，comprising 43 patients with normofiltration and 42 with hyperfiltration；（2）Univariate analysis indicated a statistically significant difference in eGFR before and after weight loss in the hyperfiltration group（143.34 mL/min/1.73m² vs 125.68 mL/min/1.73m²，P＜0.001）；（3）Non-linear correlation analysis revealed that changes in eGFR among obese patients with hyperfiltration were significantly associated with changes in VFA（P=0.015 1）and changes in BFP（P=0.022 6）．Conclusions Weight loss in obese patients may ameliorate glomerular hyperfiltration，potentially mediated through reductions in VFA and BFP．