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Effect of low-protein diet on kidney function and nutrition in nephropathy: A systematic review and meta-analysis of randomized controlled trials

文献类型： 外文期刊

作者： Yue, Hao 1 ; Zhou, Pengcheng 1 ; Xu, Zhixiang 2 ; Liu, Lina 1 ; Zong, Aizhen 1 ; Qiu, Bin 1 ; Liu, Wei 1 ; Jia, Min 1 ; Du, 1 ;

作者机构： 1.Minist Agr, Shandong Acad Agr Sci,Key Lab Novel Food Resource, Shandong Special Med Food Engn Technol Res Ctr, Inst Agrofood Sci & Technol,Key Lab Agroprod Proc, Jinan, Peoples R China

2.Food Sci & Technol Shandong Agr Univ, Tai An, Shandong, Peoples R China

3.Ocean Univ China, Coll Food Sci & Engn, Yushan Rd, Qingdao 266003, Peoples R China

关键词： Low-protein diet; Nephropathy; Malnutrition; Randomized controlled trials; Meta-analysis

期刊名称：CLINICAL NUTRITION （ 影响因子：7.324； 五年影响因子：7.938 ）

ISSN： 0261-5614

年卷期： 2020 年 39 卷 9 期

页码：

收录情况： SCI

摘要： Background: The effects of low-protein diet (LPD) on kidney function and nutrition in nephropathy are so far unclear. Objective: To investigate the effect of LPD on kidney function and nutrition. Data sources: PubMed, Embase and Cochrane library up to January 2019 and references of retrieved relevant articles. Result: Twenty-nine studies with 1784 individuals in the LPD arm and 1782 individuals in the normal protein diet were identified. Compared with normal protein diet, LPD significantly reduced BUN (WMD-20.756 mg/dl; 95% CI:-33.969 to-7.544 mg/dl; P = 0.002), UREA (WMD-1.400 g/24 h; 95% CI:-1.713 to-1.088 mmol/L; P < 0.001), proteinuria (WMD-0.416 g/24 h; 95% CI:-0.715 to-0.117 g/24 h; P = 0.006), body weight (WMD-2.757 kg; 95% CI:-3.890 to 1.623 kg; P < 0.001) and BMI (WMD-0.646 kg/m(2); 95% CI:-1.068 to-0.223 kg/m(2); P = 0.003). Dose-response analysis showed that reduction of protein intake by 0.1 g/kg/d was associated with a 0.68009 kg, 0.08771 kg/m(2), 0.27147 g/L and 0.00309 g/24 hS reduction in body weight, BMI, ALB and Proteinuria, associated with a 0.135289 ml/min/1.73 m(2) increase in GFR. The effects of LPD were more obvious on aged, obesity, moderate or severe renal impairment and DN patients. Conclusion: Low-protein diet was significantly associated with improvement of nephropathy, but LPD increases the risk of malnutrition such as BMI. The present meta-analysis provides evidence that LPD was associated with malnutrition, and high-quality RCTs with multi-center and large simple-size should be performed to confirm the present findings. (c) 2019 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.

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