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Endotoxin Activity Assay for the Detection of Whole Blood Endotoxemia in Critically Ill Patients
Published on: June 24, 2019
Elevated endotoxin levels in non-alcoholic fatty liver disease
Alison L Harte1, Nancy F da Silva1, Steven J Creely1
1University of Warwick, Unit for Diabetes and Metabolism, Warwick Medical School, Clinical Sciences Research Institute, UHCW, Clifford Bridge Road, Coventry, CV2 2DX, UK.
Journal of Inflammation (London, England)
|April 1, 2010
Summary
Elevated endotoxin levels are found in non-alcoholic fatty liver disease (NAFLD) patients, indicating potential early liver damage. Treatment with Orlistat reduced endotoxin and improved inflammatory markers in NAFLD patients.
Area of Science:
- Hepatology and Gastroenterology
- Metabolic Disorders and Inflammation
- Microbiome and Gut Health
Background:
- Gut-derived endotoxin is implicated in low-grade systemic inflammation associated with insulin resistance.
- Non-alcoholic fatty liver disease (NAFLD) is a condition linked to metabolic dysfunction and inflammation.
- The role of endotoxin and inflammatory markers in NAFLD, with or without type 2 diabetes mellitus (T2DM), requires further investigation.
Purpose of the Study:
- To evaluate serum endotoxin and inflammatory markers (sCD14, sTNFRII) in NAFLD patients, comparing them to controls and assessing differences based on T2DM status.
- To investigate the correlation between endotoxin levels, insulin resistance, and the severity of liver fibrosis in NAFLD.
- To explore the impact of Orlistat treatment on inflammatory status and endotoxin levels in NAFLD patients.
Main Methods:
- Serum samples from 155 biopsy-proven NAFLD patients and 23 controls were analyzed for endotoxin, sCD14, sTNFRII, and metabolic parameters.
- A subgroup of NAFLD patients underwent assessment at 6 and 12 months after treatment with diet alone or diet plus Orlistat.
- Statistical analyses included comparisons between groups and correlation studies to assess relationships between variables.
Main Results:
- NAFLD patients exhibited significantly higher endotoxin levels compared to controls, with levels comparable to those with T2DM.
- Serum endotoxin showed a significant positive correlation with insulin resistance.
- sCD14 and sTNFRII levels increased with fibrosis severity, and Orlistat treatment led to significant reductions in ALT, weight, and endotoxin levels.
Conclusions:
- Elevated endotoxin levels in NAFLD patients, particularly in early fibrosis, may serve as an early indicator of liver damage, potentially reducing the need for liver biopsy.
- Reducing endotoxin levels through interventions could be beneficial for managing insulin resistance and inflammation in NAFLD.
- Orlistat treatment demonstrated a positive effect on reducing endotoxin and improving inflammatory markers in NAFLD patients.
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