Association of Histopathological and Biochemical Aspects of NAFLD With the Severity of Liver Fibrosis in Individuals With Obesity: Cross-sectional Study

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发表日期：

2024年3月19日

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Carollyne Rodovalho Guerra Carneiro,
Arthur Balestra Silveira Ayres,
Martinho Antonio Gestic,
Murillo Pimentel Utrini,
Felipe David Mendonça Chaim,
Francisco Callejas-Neto,
Elinton Adami Chaim,
Everton Cazzo

摘要

Background

Given the importance of fibrosis in the progression of non-alcoholic fatty liver disease (NAFLD), identifying biochemical and histopathological aspects associated with its severity is important to determine the course of disease in high-risk populations.

Objectives

The study aims to investigate correlations between biochemical and histopathological variables associated with the occurrence and severity of NAFLD-related liver fibrosis in individuals with obesity.

Methods

This is a cross-sectional study which enrolled 171 individuals who underwent bariatric surgery at a tertiary university hospital. Clinical, laboratory, and histopathological hepatic characteristics were analyzed. Univariate and multivariate analyses were carried out to identify factors associated with the outcomes studied (severity of fibrosis staging) through simple and multiple regression models.

Results

Female were 87.7%, and the mean age was 38.4 ± 9.3 years. The most common histopathological abnormalities were macrovesicular steatosis (74.9%) and hepatocellular ballooning (40.4%). In the histopathological univariate analysis, liver fibrosis significantly correlated with severities of microvesicular steatosis (p = 0.003), lobular inflammation (p = 0.001), and NAS (p < 0.001). In the multivariate analysis, the degrees of microvesicular steatosis (p < 0.001) and NAS (p < 0.001) independently correlated with fibrosis severity. In the univariate biochemical analysis, fibrosis severity significantly correlated with levels of hemoglobin A1c (p = 0.004) and glucose (p = 0.01). In the multivariate analysis, glucose levels independently correlated with liver fibrosis degree (p = 0.007).

Conclusion

Significant and independent associations were observed between the intensities of microvesicular steatosis, NAS, and glucose levels and the severity degree of liver fibrosis in individuals with obesity.

Graphical Abstract