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Blood and urine manganese exposure in non-alcoholic fatty liver disease and advanced liver fibrosis: an observational study

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Abstract

Manganese was the key activator of biological enzymes-mediated metabolic diseases (Mets)-associated pathophysiological process. Non-alcoholic fatty liver disease (NAFLD), which was the hepatic manifestation of Mets, development remained a mystery. We aimed to explore the association between blood/urine manganese exposure and NAFLD and liver fibrosis diagnosed by vibration-controlled transient elastography (VCTE). All data were extracted from National Health and Nutrition Examination Survey database (2017–2018). A total of 3580 participants with blood manganese data were enrolled and divided into four groups according to the quartile of blood manganese exposure level. In multiple logistic regression models, the higher blood manganese exposure level (groups 2, 3, and 4) had a significant positive association with NAFLD (β = 1.58, 1.30, and 1.69). In subgroup analysis, the main inversely correlation between blood manganese and NAFLD was found in participants with normal/high body mass index and high blood manganese exposure level. Moreover, in 1179 participants with urine manganese data, urine manganese exposure level presented as significantly associated with advanced liver fibrosis in models 1 and 2 (β = 2.00 and 2.02). This study showed that manganese exposure level was positively associated with NAFLD and advanced liver fibrosis among the US population. We suggested that manganese exposure level was a biomarker of the development of NAFLD.

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Data availability

The data used in this study are from a public database at https://www.cdc.gov/nchs/nhanes/index.htm, which can be accessed by everyone through the links provided in the paper.

Abbreviations

NAFLD:

Non-alcoholic fatty liver disease

NASH:

Non-alcoholic steatohepatitis

HCC:

Hepatocellular carcinoma

Mets:

Metabolic syndrome

ALT:

Alanine aminotransferase

FIB-4:

Fibrosis-4 index

AST:

Aspartate aminotransferase

VCTE:

Vibration-controlled transient elastography

NHANES:

National Health and Nutrition Examination Survey

NCHS:

National Center for Health Statistics

CAP:

Controlled attenuation parameter

HBsAg:

Hepatitis B virus surface antigen (HBsAg)

HCV:

Hepatitis C virus

BMI:

Body mass index

MEC:

Mobile Examination Center

LLOD:

Lowest limit of detection

References

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Acknowledgements

The authors thank all the staff and participants in NHAENS 2017–2018 for their contribution of donation, collection, and sharing data.

Funding

This work was supported by the National Natural Science Foundation of China (Grant Number: 82170292), and the Scientific research project of Hunan Provincial Department of Finance (Grant Number: 202127).

Author information

Authors and Affiliations

Authors

Contributions

Jie Liu: analysis the data and writing—original draft.

Liao Tan: analysis the data and software.

Zhaoya Liu: revision of the manuscript and validation.

Ruizheng Shi: validation, supervision, writing (review and editing), project administration.

Corresponding author

Correspondence to Ruizheng Shi.

Ethics declarations

Ethics approval and consent to participate

The NHANES agreement has been reviewed and approved by the NCHS Research Ethics Committee. All participants provided written informed consent before participating.

Consent for publication

The manuscript is approved by all authors for publication.

Competing interests

The authors declare no or competing interests.

Additional information

Responsible Editor: Lotfi Aleya

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Headings

• Manganese exposure has been a growing environmental problem and a serious threat to human health which was closely related to metabolic diseases, especially in NAFLD.

• High blood manganese exposure was associated with NAFLD diagnosed by vibration-controlled transient elastography.

• Participants with higher urine manganese exposure had a high percentage of advanced liver fibrosis.

Supplementary Information

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Supplementary file1 (DOCX 79 KB)

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Liu, J., Tan, L., Liu, Z. et al. Blood and urine manganese exposure in non-alcoholic fatty liver disease and advanced liver fibrosis: an observational study. Environ Sci Pollut Res 30, 22222–22231 (2023). https://doi.org/10.1007/s11356-022-23630-4

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  • DOI: https://doi.org/10.1007/s11356-022-23630-4

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