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High red meat consumption among PNPLA3 polymorphism carriers is associated with NAFLD in a multi-center cross-sectional study

Abstract

Background & Aim

Patatin-like phospholipase domain-containing 3 gene (PNPLA3) polymorphism has been implicated in susceptibility to non-alcoholic fatty liver disease (NAFLD), with evidence for potential interaction with nutrition. However, the combination of meat consumption with genetic polymorphism has not been tested. Therefore, this study aims to test the association between the joint presence of PNPLA3 rs738409 G-allele with high meat consumption and NAFLD in populations with diverse meat consumption.

Methods

A cross-sectional study among Israeli screening and Brazilian primary healthcare populations. Food consumption was assessed by a food-frequency questionnaire. PNPLA3 polymorphism was defined as homozygous (GG) or heterozygous (GC). Inconclusive/probable NAFLD was defined as a fatty liver index (FLI) ≥ 30 and probable NAFLD as FLI ≥ 60.

Results

The sample included 511 subjects from the screening and primary healthcare populations (n = 213 and n = 298, respectively). Genetic polymorphism (homozygous GG or heterozygous GC) combined with high consumption of total meat, red and/or processed meat, unprocessed red meat, and processed meat was associated with the highest odds for inconclusive/probable NAFLD (OR = 2.75, 95%CI 1.27–5.97, p = 0.011; OR = 3.24, 1.43–7.34, p = 0.005; OR = 2.92, 1.32–6.47, p = 0.008; OR = 3.16, 1.46–6.83, p = 0.003, respectively), adjusting for age, gender, BMI, alcohol consumption, carbohydrate, and saturated fat intake. In addition, genetic polymorphism combined with high processed meat consumption was associated with the highest odds for probable NAFLD (OR = 2.40, 95%CI 1.04–5.56, p = 0.040).

Conclusions

High red meat intake may confer a greater risk for NAFLD among PNPLA3 polymorphism carriers. Prospective studies are needed to confirm these findings and consider minimizing red and processed meat consumption among PNPLA3 polymorphism carriers.

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Fig. 1: Flow chart of the populations by study center.
Fig. 2: Multivariable association between high1 processed meat consumption by PNPLA3 polymorphism2,3 and probable NAFLD (FLI ≥ 60), among the screening plus the primary care populations.

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Data availability

The datasets generated during and/or analysed during the current study are not publicly available due to ethical considerations, but are available from the corresponding author on reasonable request.

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Funding

This study was financed in part by: Research Grants and Fellowships Fund on Food and Nutrition and their Implications on Public Health, The Israeli Ministry of Health. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) -Finance Code 001. Conselho Nacional de DesenvolvimentoCientífico e Tecnológico, Brazil.

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Authors and Affiliations

Authors

Contributions

MRAS: study concept and design, analysis and interpretation of data, drafting of the manuscript; DIW: study concept and design, analysis and interpretation of data, statistical analysis; CPO: study concept and design, analysis and interpretation of data, drafting of the manuscript; SR: data collection; LL: data collection, analysis and interpretation of data, PNPLA3 polymorphism analysis; CUC: PNPLA3 polymorphism analysis; SMY: data collection; DJ: study concept and design; MBY: PNPLA3 polymorphism analysis; LSG: analysis and interpretation of data, critical revision of the manuscript for important intellectual content; OS: critical revision of the manuscript for important intellectual content; RR: study concept and design, critical revision of the manuscript for important intellectual content, study supervision; SZS: study concept and design, analysis and interpretation of data, drafting of the manuscript, study supervision.

Corresponding author

Correspondence to Shira Zelber-Sagi.

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The study was aproved by the IRB of each center.

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Alvares-da-Silva, M.R., Ivancovsky-Wajcman, D., Oliveira, C.P. et al. High red meat consumption among PNPLA3 polymorphism carriers is associated with NAFLD in a multi-center cross-sectional study. Eur J Clin Nutr (2024). https://doi.org/10.1038/s41430-024-01416-w

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