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Published on: April 26, 2019
Implications of Microbiota and Immune System in Development and Progression of Metabolic Dysfunction-Associated
Jelena Popov1, Tijana Despot2, David Avelar Rodriguez3
1Boston Combined Residency Program, Boston Children's Hospital & Boston Medical Center, Boston, MA 02115, USA.
Abstract:
Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most prevalent type of liver disease worldwide. The exact pathophysiology behind MASLD remains unclear; however, it is thought that a combination of factors or "hits" act as precipitants for disease onset and progression. Abundant evidence supports the roles of diet, genes, metabolic dysregulation, and the intestinal microbiome in influencing the accumulation of lipids in hepatocytes and subsequent progression to inflammation and fibrosis. Currently, there is no cure for MASLD, but lifestyle changes have been the prevailing cornerstones of management. Research is now focusing on the intestinal microbiome as a potential therapeutic target for MASLD, with the spotlight shifting to probiotics, antibiotics, and fecal microbiota transplantation. In this review, we provide an overview of how intestinal microbiota interact with the immune system to contribute to the pathogenesis of MASLD and metabolic dysfunction-associated steatohepatitis (MASH). We also summarize key microbial taxa implicated in the disease and discuss evidence supporting microbial-targeted therapies in its management.
Insights
Metabolic dysfunction-associated steatotic liver disease (MASLD) involves liver fat accumulation. Gut microbes influence MASLD and metabolic dysfunction-associated steatohepatitis (MASH), suggesting microbiome-targeted therapies may offer new treatment avenues.
Area of Science:
- Hepatology
- Microbiology
- Immunology
Background:
- Metabolic dysfunction-associated steatotic liver disease (MASLD) is a global health concern.
- Its pathophysiology involves multiple factors, including diet, genetics, metabolic issues, and the gut microbiome.
- Current management relies on lifestyle changes, with no definitive cure available.
Purpose of the Study:
- To review the role of the intestinal microbiome in MASLD and metabolic dysfunction-associated steatohepatitis (MASH) pathogenesis.
- To identify key microbial taxa associated with these liver conditions.
- To discuss the potential of microbiome-targeted therapies for MASLD/MASH management.
Main Methods:
- Literature review focusing on the interplay between gut microbiota, the immune system, and liver disease.
- Synthesis of evidence on microbial contributions to lipid accumulation, inflammation, and fibrosis in MASLD/MASH.
- Analysis of current and emerging microbial-targeted therapeutic strategies.
Main Results:
- The gut microbiome significantly influences MASLD and MASH development and progression.
- Specific microbial taxa are implicated in the pathogenesis of these liver diseases.
- Emerging therapies like probiotics, antibiotics, and fecal microbiota transplantation show promise.
Conclusions:
- The gut microbiome is a critical factor in MASLD and MASH.
- Understanding microbial-host interactions is key to developing novel therapeutic strategies.
- Microbiome-targeted interventions represent a promising frontier for MASLD/MASH treatment.
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