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Meta-Analysis
. 2023 Jan 18:380:e072909.
doi: 10.1136/bmj-2022-072909.

Association of omega 3 polyunsaturated fatty acids with incident chronic kidney disease: pooled analysis of 19 cohorts

Kwok Leung Ong  1 Matti Marklund  2   3   4 Liping Huang  2 Kerry-Anne Rye  5 Nicholas Hui  5 Xiong-Fei Pan  2   6   7 Casey M Rebholz  8 Hyunju Kim  8 Lyn M Steffen  9 Anniek C van Westing  10 Johanna M Geleijnse  10 Ellen K Hoogeveen  11   12   13   14 Yun-Yu ChenKuo-Liong Chien  12 Amanda M Fretts  15 Rozenn N Lemaitre  16 Fumiaki Imamura  17 Nita G Forouhi  17 Nicholas J Wareham  17 Anna Birukov  18   19 Susanne Jäger  18   19 Olga Kuxhaus  18   19 Matthias B Schulze  18   19   20 Vanessa Derenji de Mello  21 Jaakko Tuomilehto  22   23   24 Matti Uusitupa  21 Jaana Lindström  22 Nathan Tintle  25   26 William S Harris  25   27   28 Keisuke Yamasaki  28 Yoichiro Hirakawa  29 Toshiharu Ninomiya  28 Toshiko Tanaka  30 Luigi Ferrucci  30 Stefania Bandinelli  31 Jyrki K Virtanen  21 Ari Voutilainen  21 Tharusha Jayasena  32 Anbupalam Thalamuthu  32 Anne Poljak  33 Sonia Bustamante  33   32 Perminder S SachdevMackenzie K Senn 2nd  34 Stephen S Rich  35   36 Michael Y Tsai  37 Alexis C Wood  34 Markku Laakso  38   39 Maria Lankinen  21 Xiaowei Yang  40 Liang Sun  40 Huaixing Li  40 Xu Lin  40   41 Christoph Nowak  42 Johan Ärnlöv  42 Ulf Risérus  4 Lars Lind  43 Mélanie Le Goff  44 Cécilia Samieri  44 Catherine Helmer  44 Frank Qian  45   46 Renata Micha  47   48 Adrienne Tin  8   49 Anna Köttgen  8   50 Ian H de Boer  51   52   53 David S Siscovick  54 Dariush Mozaffarian  48 Jason Hy Wu  2   55
Affiliations
Meta-Analysis

Association of omega 3 polyunsaturated fatty acids with incident chronic kidney disease: pooled analysis of 19 cohorts

Kwok Leung Ong et al. BMJ. .

Abstract

Objective: To assess the prospective associations of circulating levels of omega 3 polyunsaturated fatty acid (n-3 PUFA) biomarkers (including plant derived α linolenic acid and seafood derived eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid) with incident chronic kidney disease (CKD).

Design: Pooled analysis.

Data sources: A consortium of 19 studies from 12 countries identified up to May 2020.

Study selection: Prospective studies with measured n-3 PUFA biomarker data and incident CKD based on estimated glomerular filtration rate.

Data extraction and synthesis: Each participating cohort conducted de novo analysis with prespecified and consistent exposures, outcomes, covariates, and models. The results were pooled across cohorts using inverse variance weighted meta-analysis.

Main outcome measures: Primary outcome of incident CKD was defined as new onset estimated glomerular filtration rate <60 mL/min/1.73 m2. In a sensitivity analysis, incident CKD was defined as new onset estimated glomerular filtration rate <60 mL/min/1.73 m2 and <75% of baseline rate.

Results: 25 570 participants were included in the primary outcome analysis and 4944 (19.3%) developed incident CKD during follow-up (weighted median 11.3 years). In multivariable adjusted models, higher levels of total seafood n-3 PUFAs were associated with a lower incident CKD risk (relative risk per interquintile range 0.92, 95% confidence interval 0.86 to 0.98; P=0.009, I2=9.9%). In categorical analyses, participants with total seafood n-3 PUFA level in the highest fifth had 13% lower risk of incident CKD compared with those in the lowest fifth (0.87, 0.80 to 0.96; P=0.005, I2=0.0%). Plant derived α linolenic acid levels were not associated with incident CKD (1.00, 0.94 to 1.06; P=0.94, I2=5.8%). Similar results were obtained in the sensitivity analysis. The association appeared consistent across subgroups by age (≥60 v <60 years), estimated glomerular filtration rate (60-89 v ≥90 mL/min/1.73 m2), hypertension, diabetes, and coronary heart disease at baseline.

Conclusions: Higher seafood derived n-3 PUFA levels were associated with lower risk of incident CKD, although this association was not found for plant derived n-3 PUFAs. These results support a favourable role for seafood derived n-3 PUFAs in preventing CKD.

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Conflict of interest statement

Competing interests: All authors have completed the ICMJE uniform disclosure form at https://www.icmje.org/disclosure-of-interest and declare: support from Australian National Health and Medical Research Council Career Development Fellowship and the University of New South Wales Safety Net Fellowship for the submitted work; MM reports research funding from Resolve to Save Lives, World Health Organisation and North western University, and support as invited speaker in the Nordic Dairy Congress 2022. CMR and LMS report research funding from the US National Institute of Health (NIH). CMR reports participation on the Data Safety Monitoring Boards of the SUPER and ADEPT trials and leadership role as associate editor of Diabetes Care. ACvW reports research funding from Jaap Schouten Foundation. JMG reports research funding from Jaap Schouten Foundation, EU Horizon 2020, and Ministry of Health, Welfare and Sports, The Netherlands, and leadership role as the Vice President of the Dutch Health Council. EKH reports research funding from Dutch Kidney Foundation. FI and NGF receive the MRC Epidemiology Unit core support. NGF reports research fundings from the NIHR Cambridge Biomedical Research Centre Theme on Nutrition, Diet and Lifestyle. JT declares conference support from the University of Antioquia, Colombia and possession of stocks from Orion Pharma. MU declares possession of stocks from Orion Pharma. WSH declares possession of stock in OmegaQuant Analytics, LLC (a laboratory that offers blood fatty acid testing to healthcare providers, researchers and consumers). PSS reports research funding from the National Health and Medical Research Council of Australia and honoraria from Biogen Australia and Roche Australia. ACW reports research funding from the US Department of Agriculture/Agricultural Research Service, NIH, National Cattlemen’s Beef Association and Hass Avocado Board Avocado Nutrition Research Center. JA has received research honoraria for lectures from AstraZeneca and Novartis, and has participated in the advisory board for AstraZeneca and Boerhinger Ingelheim, unrelated to the present study. UR reports research funding from Swedish Research Council Forma and Swedish Diabetes Foundation. RM reports research funding from the US NIH, Gates Foundation, Nestle and Danone, and consulting fees from Development Initiatives with leadership role as chair of the Independent Expert Group, Global Nutrition Report. AT declares as co-chair of ClinGen Gout Genetic Curation Panel and reports research funding from the US National Institute of Health; AK reports research funding from the German Research Foundation. DM reports research funding from the US NIH, the Gates Foundation, The Rockefeller Foundation, Vail Innovative Global Research, and the Kaiser Permanente Fund at East Bay Community Foundation; personal fees from Acasti Pharma and Barilla; scientific advisory board, Beren Therapeutics, Brightseed, Calibrate, Elysium Health, Filtricine, HumanCo, Instacart, January Inc., Perfect Day, Tiny Organics, and (ended) Day Two, Discern Dx, and Season Health; stock ownership in Calibrate and HumanCo; and chapter royalties from UpToDate. No other relationships or activities that could appear to have influenced the submitted work were reported.

Figures

Fig 1
Fig 1
Association of total seafood n-3 PUFAs (eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid) with incident CKD. Incident CKD was defined as an eGFR<60 mL/min/1.73 m2 during follow-up among participants with baseline eGFR≥60 mL/min/1.73 m2. Analyses were adjusted for age, sex, race, field centre if applicable, education, occupation, body mass index, smoking, physical activity, alcohol intake, prevalent coronary heart disease, and use of lipid lowering drugs. Study specific estimates per interquintile range (difference between midpoint of lowest fifth and highest fifth) of total n-3 PUFAs were pooled separately for different lipid compartments and overall. AOC=Alpha Omega Cohort; ARIC=Atherosclerosis Risk in Communities Study; CCCC=Chin-Shan Community Cardiovascular Cohort Study; CHS=Cardiovascular Health Study; CKD=chronic kidney disease; eGFR=estimated glomerular filtration rate; EPIC-Norfolk=European Prospective Investigation into Cancer and Nutrition (Norfolk); EPIC-Potsdam=European Prospective Investigation into Cancer and Nutrition (Potsdam); FDPS=Finnish Diabetes Prevention Study; FHS=Framingham Heart Study; InCHIANTI=Invecchiare in Chianti Study; KIHD=Kuopio Ischaemic Heart Disease Risk Factor Study; MAS=Memory and Ageing Study; MESA=Multi-Ethnic Study of Atherosclerosis; METSIM=Metabolic Syndrome in Men; n-3 PUFA=omega 3 polyunsaturated fatty acid; NHAPC=Nutrition and Health of Ageing Populations in China; PIVUS=Prospective Investigation of the Vasculature in Uppsala Seniors; WHIMS=Women’s Health Initiative Memory Study; ULSAM=Uppsala Longitudinal Study of Adult Men; 3C=Three City Study

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