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Diabetologia

pp 1–11 | Cite as

The PNPLA3 rs738409 C>G variant interacts with changes in body weight over time to aggravate liver steatosis, but reduces the risk of incident type 2 diabetes

  • Ming-Feng Xia
  • Huan-Dong Lin
  • Ling-Yan Chen
  • Li Wu
  • Hui Ma
  • Qian Li
  • Qiqige Aleteng
  • Yu Hu
  • Wan-Yuan He
  • Jian Gao
  • Hua Bian
  • Xiao-Ying Li
  • Xin GaoEmail author
Article
  • 127 Downloads

Abstract

Aims/hypothesis

The rs738409 C>G variant of the patatin-like phospholipase domain containing 3 gene (PNPLA3) increases the risk of non-alcoholic fatty liver disease (NAFLD) with no predisposition for insulin resistance. In this study, we aimed to investigate the influence of PNPLA3 polymorphisms on liver fat content (LFC) and glucose metabolic variables, and the associations between these, during the natural course of body weight changes in a Chinese adult cohort.

Methods

The LFC, measured using a quantitative ultrasound method, was prospectively monitored in 2189 middle-aged and elderly adults from the Shanghai Changfeng Study, together with changes in body weight and metabolic variables. General linear models were used to detect interactive effects between the PNPLA3 rs738409 genotype and 4 year changes in body weight on liver steatosis and glucose metabolism.

Results

The PNPLA3 homozygous GG genotype dissociated the changes in the LFC and OGTT 2 h post-load blood glucose (PBG) in relation to 4 year changes in body weight. PNPLA3 GG genotype carriers showed greater increases in the LFC and serum alanine aminotransferase (ALT) but lower PBG elevation and incident diabetes than PNPLA3 wild-type (CC) genotype carriers exhibiting the same degree of body weight increase. The interactions between the PNPLA3 genotype and changes in body weight on the LFC (false discovery rate [FDR]-adjusted pinteraction = 0.044) and ALT (FDR-adjusted pinteraction = 0.044) were significant. Subgroup analyses showed that the effect of the PNPLA3 GG genotype on changes in the LFC and PBG was only observed in metabolically unhealthy participants with insulin resistance or abdominal obesity.

Conclusions/interpretation

The PNPLA3 GG genotype interacted with changes in body weight to aggravate liver steatosis but reduced the risk of incident type 2 diabetes in metabolically unhealthy participants.

Keywords

Body weight Diabetes Gene–environment interaction NAFLD PNPLA3 gene variant 

Abbreviations

ALT

Alanine aminotransferase

AST

Aspartate aminotransferase

CVD

Cardiovascular disease

FBG

Fasting blood glucose

FDR

False discovery rate

1H-MRS

Proton magnetic resonance spectroscopy

LFC

Liver fat content

NAFLD

Non-alcoholic fatty liver disease

NASH

Non-alcoholic steatohepatitis

PBG

Post-load blood glucose

PNPLA3

Patatin-like phospholipase domain containing 3

Notes

Acknowledgements

The authors thank S. Conte (American Journal Experts, Durham, NC, USA) for providing an editing service for this article.

Contribution statement

MX and HL designed and performed the study and drafted the manuscript. LC, LW, HM, QL and QA performed the study, collected data and revised the manuscript. WH conducted the ultrasound examination, interpreted data and revised the manuscript. JG analysed and interpreted the data and wrote the statistical methods section of the manuscript. YH and HB interpreted the data and revised the discussion section of the manuscript. XL designed the study and revised the manuscript. XG designed the study, provided funding and revised the manuscript. All authors approved the final version. XG is the guarantor of this work and, as such, has full access to all of the data, takes responsibility for the integrity of the data, and controlled the decision to publish.

Funding

This work was supported by the National Key Research Program of China (grant no. 2012CB524906 to XG), the National Natural Science Foundation of China (grant no. 81873660 to MX), the Shanghai Municipal Science and Technology Committee (grant no. 16411954800 to XG) and the Shanghai Health and Family Planning Commission Foundation (grant no. 15GWZK0801 to XG and HL and 20164Y0029 to MX).

Duality of interest

The authors declare that there is no duality of interest associated with this manuscript.

Supplementary material

125_2018_4805_MOESM1_ESM.pdf (1.1 mb)
ESM (PDF 1085 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Ming-Feng Xia
    • 1
    • 2
  • Huan-Dong Lin
    • 1
    • 2
  • Ling-Yan Chen
    • 3
  • Li Wu
    • 1
    • 2
  • Hui Ma
    • 3
  • Qian Li
    • 1
    • 2
  • Qiqige Aleteng
    • 1
    • 2
  • Yu Hu
    • 3
  • Wan-Yuan He
    • 4
  • Jian Gao
    • 5
    • 6
  • Hua Bian
    • 1
    • 2
  • Xiao-Ying Li
    • 1
    • 2
  • Xin Gao
    • 1
    • 2
    Email author
  1. 1.Department of Endocrinology and Metabolism, Zhongshan HospitalFudan UniversityShanghaiChina
  2. 2.Fudan Institute for Metabolic DiseasesShanghaiChina
  3. 3.Department of Geriatrics, Zhongshan HospitalFudan UniversityShanghaiChina
  4. 4.Department of Ultrasonography, Zhongshan HospitalFudan UniversityShanghaiChina
  5. 5.Center of Clinical Epidemiology and EBM of Fudan UniversityShanghaiChina
  6. 6.Department of NutritionZhongshan Hospital of Fudan UniversityShanghaiChina

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