The interaction of rs738409, obesity, and alcohol: A population-based autopsy study

Winston Dunn, Zhen Zeng, Maura O'Neil, Jie Zhao, Melissa Whitener, Yu-Jui Yvonne Wan, Erik K. Mitchell, Michael Handler, Steven A. Weinman

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Objectives: The objective of this study was to access the prevalence of alcoholic liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD) histology in the general population, which had been otherwise difficult to access because of inherent misclassification bias in surrogate marker studies and referral bias in patient case series. The interaction among rs738409, obesity, and alcohol remains controversial. This population-based autopsy study investigated the histological prevalence of ALD and NAFLD, and interactions among rs738409, obesity, and alcoholism. Methods: A total of 170 alcoholic and 235 nonalcoholic cases were selected from 1,034 adult car accident autopsies in 17 Kansas and Missouri counties from 2000 to 2010. The nonalcoholic group had undetectable blood alcohol concentration, while the alcoholic group had a blood alcohol concentration 0.08%. Results: The age-standardized prevalences of hepatic steatosis, steatohepatitis, and advanced fibrosis were 56, 6, and 18% among alcoholics and 36, 4, and 6% in nonalcoholics, respectively. The interaction terms among alcohol, body mass index (BMI), and genotype were not significant. rs738409 GC or GG genotype was associated with 1.9-fold odds (95% confidence interval (CI), 1.22.9) of a higher NAFLD Activity Score (NAS). Alcohol had 3.5-fold odds (95% CI, 2.05.9), while every 5-unit increase in BMI had 1.9-fold odds (95% CI, 1.72.5). A negative interaction between alcohol and BMI towards fibrosis had been observed (P0.045). Every 5-unit increase in BMI had 2.2-fold odds (95% CI, 1.52.5) of fibrosis among nonalcoholics, but not in alcoholics. Conclusions: This study assessed the prevalence of fatty liver histology in the general population from an autopsy study perspective. The finding of an additive interaction among rs738409, obesity, and alcohol towards NAS may be useful in targeting preventative care to patients at highest risk for ALD. The negative interaction between alcohol and obesity towards fibrosis supported previous findings and suggests the need for future research to explore potential mechanisms that may improve treatment of nonalcoholic steatohepatitis-related fibrosis.

Original languageEnglish (US)
Pages (from-to)1668-1674
Number of pages7
JournalAmerican Journal of Gastroenterology
Volume107
Issue number11
DOIs
StatePublished - Nov 2012
Externally publishedYes

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Autopsy
Obesity
Alcohols
Fibrosis
Alcoholic Liver Diseases
Body Mass Index
Confidence Intervals
Population
Fatty Liver
Alcoholics
Histology
Genotype
Preventive Medicine
Alcoholism
Accidents
Referral and Consultation
Cross-Sectional Studies
Biomarkers
Non-alcoholic Fatty Liver Disease
Liver

ASJC Scopus subject areas

  • Gastroenterology

Cite this

The interaction of rs738409, obesity, and alcohol : A population-based autopsy study. / Dunn, Winston; Zeng, Zhen; O'Neil, Maura; Zhao, Jie; Whitener, Melissa; Wan, Yu-Jui Yvonne; Mitchell, Erik K.; Handler, Michael; Weinman, Steven A.

In: American Journal of Gastroenterology, Vol. 107, No. 11, 11.2012, p. 1668-1674.

Research output: Contribution to journalArticle

Dunn, W, Zeng, Z, O'Neil, M, Zhao, J, Whitener, M, Wan, Y-JY, Mitchell, EK, Handler, M & Weinman, SA 2012, 'The interaction of rs738409, obesity, and alcohol: A population-based autopsy study', American Journal of Gastroenterology, vol. 107, no. 11, pp. 1668-1674. https://doi.org/10.1038/ajg.2012.285
Dunn, Winston ; Zeng, Zhen ; O'Neil, Maura ; Zhao, Jie ; Whitener, Melissa ; Wan, Yu-Jui Yvonne ; Mitchell, Erik K. ; Handler, Michael ; Weinman, Steven A. / The interaction of rs738409, obesity, and alcohol : A population-based autopsy study. In: American Journal of Gastroenterology. 2012 ; Vol. 107, No. 11. pp. 1668-1674.
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abstract = "Objectives: The objective of this study was to access the prevalence of alcoholic liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD) histology in the general population, which had been otherwise difficult to access because of inherent misclassification bias in surrogate marker studies and referral bias in patient case series. The interaction among rs738409, obesity, and alcohol remains controversial. This population-based autopsy study investigated the histological prevalence of ALD and NAFLD, and interactions among rs738409, obesity, and alcoholism. Methods: A total of 170 alcoholic and 235 nonalcoholic cases were selected from 1,034 adult car accident autopsies in 17 Kansas and Missouri counties from 2000 to 2010. The nonalcoholic group had undetectable blood alcohol concentration, while the alcoholic group had a blood alcohol concentration 0.08{\%}. Results: The age-standardized prevalences of hepatic steatosis, steatohepatitis, and advanced fibrosis were 56, 6, and 18{\%} among alcoholics and 36, 4, and 6{\%} in nonalcoholics, respectively. The interaction terms among alcohol, body mass index (BMI), and genotype were not significant. rs738409 GC or GG genotype was associated with 1.9-fold odds (95{\%} confidence interval (CI), 1.22.9) of a higher NAFLD Activity Score (NAS). Alcohol had 3.5-fold odds (95{\%} CI, 2.05.9), while every 5-unit increase in BMI had 1.9-fold odds (95{\%} CI, 1.72.5). A negative interaction between alcohol and BMI towards fibrosis had been observed (P0.045). Every 5-unit increase in BMI had 2.2-fold odds (95{\%} CI, 1.52.5) of fibrosis among nonalcoholics, but not in alcoholics. Conclusions: This study assessed the prevalence of fatty liver histology in the general population from an autopsy study perspective. The finding of an additive interaction among rs738409, obesity, and alcohol towards NAS may be useful in targeting preventative care to patients at highest risk for ALD. The negative interaction between alcohol and obesity towards fibrosis supported previous findings and suggests the need for future research to explore potential mechanisms that may improve treatment of nonalcoholic steatohepatitis-related fibrosis.",
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AU - Zeng, Zhen

AU - O'Neil, Maura

AU - Zhao, Jie

AU - Whitener, Melissa

AU - Wan, Yu-Jui Yvonne

AU - Mitchell, Erik K.

AU - Handler, Michael

AU - Weinman, Steven A.

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N2 - Objectives: The objective of this study was to access the prevalence of alcoholic liver disease (ALD) and nonalcoholic fatty liver disease (NAFLD) histology in the general population, which had been otherwise difficult to access because of inherent misclassification bias in surrogate marker studies and referral bias in patient case series. The interaction among rs738409, obesity, and alcohol remains controversial. This population-based autopsy study investigated the histological prevalence of ALD and NAFLD, and interactions among rs738409, obesity, and alcoholism. Methods: A total of 170 alcoholic and 235 nonalcoholic cases were selected from 1,034 adult car accident autopsies in 17 Kansas and Missouri counties from 2000 to 2010. The nonalcoholic group had undetectable blood alcohol concentration, while the alcoholic group had a blood alcohol concentration 0.08%. Results: The age-standardized prevalences of hepatic steatosis, steatohepatitis, and advanced fibrosis were 56, 6, and 18% among alcoholics and 36, 4, and 6% in nonalcoholics, respectively. The interaction terms among alcohol, body mass index (BMI), and genotype were not significant. rs738409 GC or GG genotype was associated with 1.9-fold odds (95% confidence interval (CI), 1.22.9) of a higher NAFLD Activity Score (NAS). Alcohol had 3.5-fold odds (95% CI, 2.05.9), while every 5-unit increase in BMI had 1.9-fold odds (95% CI, 1.72.5). A negative interaction between alcohol and BMI towards fibrosis had been observed (P0.045). Every 5-unit increase in BMI had 2.2-fold odds (95% CI, 1.52.5) of fibrosis among nonalcoholics, but not in alcoholics. Conclusions: This study assessed the prevalence of fatty liver histology in the general population from an autopsy study perspective. The finding of an additive interaction among rs738409, obesity, and alcohol towards NAS may be useful in targeting preventative care to patients at highest risk for ALD. The negative interaction between alcohol and obesity towards fibrosis supported previous findings and suggests the need for future research to explore potential mechanisms that may improve treatment of nonalcoholic steatohepatitis-related fibrosis.

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