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[NASH and metabolic syndrome]
Toshiji Saibara1, Masafumi Ono, Saburo Onishi
1Department of Gastroenterology and Hepatology, Kochi Medical School.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|June 14, 2006
Summary
Nonalcoholic steatohepatitis (NASH) is linked to visceral obesity and insulin resistance, often presenting as the liver manifestation of metabolic syndrome. Lifestyle-related diseases can aid in detecting NASH.
Area of Science:
- Hepatology
- Metabolic Diseases
- Internal Medicine
Background:
- Nonalcoholic steatohepatitis (NASH) is characterized by specific liver pathology, including steatosis, inflammation, and fibrosis.
- Visceral obesity and insulin resistance are common clinical features of NASH.
- A significant majority of NASH patients (90%) have visceral obesity, and two-thirds meet metabolic syndrome criteria.
Purpose of the Study:
- To highlight the connection between NASH and metabolic syndrome.
- To establish NASH as the hepatic manifestation of metabolic syndrome.
- To identify lifestyle-related diseases as potential markers for NASH detection.
Main Methods:
- Histopathological analysis of liver tissue to identify NASH hallmarks (steatosis, ballooned hepatocytes, Mallory bodies, fibrosis, inflammation).
- Clinical assessment of patients for visceral obesity and metabolic syndrome criteria.
- Correlation analysis between metabolic syndrome components and NASH diagnosis.
Main Results:
- NASH pathology includes zone 3-dominant steatosis, ballooned hepatocytes, Mallory bodies, pericellular/perivenular fibrosis, and lobular inflammation.
- Visceral obesity is present in 90% of NASH cases.
- Two-thirds of NASH patients fulfill metabolic syndrome criteria, supporting NASH as a hepatic manifestation.
Conclusions:
- NASH is strongly associated with visceral obesity and insulin resistance.
- NASH can be considered the liver manifestation of metabolic syndrome.
- Lifestyle-related diseases like obesity, hypertension, hyperlipidemia, and diabetes mellitus may serve as indicators for NASH detection.