期刊
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION
卷 322, 期 19, 页码 1899-1909出版社
AMER MEDICAL ASSOC
DOI: 10.1001/jama.2019.17380
关键词
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资金
- National Institute of Diabetes and Digestive and Kidney Diseases [R01DK088762]
- National Cancer Institute [U01CA138962, R01CA138962]
- National Heart, Lung, and Blood Institute
- Office of Dietary Supplements
- National Institute of Neurological Disorders and Stroke
- National Center for Complementary and Integrative Health
- Northwest Kidney Centers
Importance: Chronic kidney disease (CKD) is a common complication of type 2 diabetes that can lead to end-stage kidney disease and is associated with high cardiovascular risk. Few treatments are available to prevent CKD in type 2 diabetes. Objective: To test whether supplementation with vitamin D-3 or omega-3 fatty acids prevents development or progression of CKD in type 2 diabetes. Design, Setting, and Participants: Randomized clinical trial with a 2 x 2 factorial design conducted among 1312 adults with type 2 diabetes recruited between November 2011 and March 2014 from all 50 US states as an ancillary study to the Vitamin D and Omega-3 Trial (VITAL), coordinated by a single center in Massachusetts. Follow-up was completed in December 2017. Interventions: Participants were randomized to receive vitamin D-3 (2000 IU/d) and omega-3 fatty acids (eicosapentaenoic acid and docosahexaenoic acid; 1 g/d) (n = 370), vitamin D-3 and placebo (n = 333), placebo and omega-3 fatty acids (n = 289), or 2 placebos (n = 320) for 5 years. Main Outcomes and Measures: The primary outcome was change in glomerular filtration rate estimated from serum creatinine and cystatin C (eGFR) from baseline to year 5. Results: Among 1312 participants randomized (mean age, 67.6 years; 46% women; 31% of racial or ethnic minority), 934 (71%) completed the study. Baseline mean eGFR was 85.8 (SD, 22.1) mL/min/1.73 m(2). Mean change in eGFR from baseline to year 5 was -12.3 (95% CI, -13.4 to -11.2) mL/min/1.73 m(2) with vitamin D-3 vs -13.1 (95% CI, -14.2 to -11.9) mL/min/1.73 m(2) with placebo (difference, 0.9 [95% CI, -0.7 to 2.5] mL/min/1.73 m(2)). Mean change in eGFR was -12.2 (95% CI, -13.3 to -11.1) mL/min/1.73 m(2) with omega-3 fatty acids vs -13.1 (95% CI, -14.2 to -12.0) mL/min/1.73 m(2) with placebo (difference, 0.9 [95% CI, -0.7 to 2.6] mL/min/1.73 m(2)). There was no significant interaction between the 2 interventions. Kidney stones occurred among 58 participants (n = 32 receiving vitamin D-3 and n = 26 receiving placebo) and gastrointestinal bleeding among 45 (n = 28 receiving omega-3 fatty acids and n = 17 receiving placebo). Conclusions and Relevance: Among adults with type 2 diabetes, supplementation with vitamin D-3 or omega-3 fatty acids, compared with placebo, resulted in no significant difference in change in eGFR at 5 years. The findings do not support the use of vitamin D or omega-3 fatty acid supplementation for preserving kidney function in patients with type 2 diabetes.
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