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Metabolic disorders associated with chronic hepatitis C: impact of genotype and ethnicity
Thomas Sersté1, Marcel Nkuize, Rami Moucari
1Hépato-Gastroentérologie, Hôpital Saint-Pierre, Université Libre de Bruxelles, Bruxelles, Belgium. thomas.serste@skynet.be
Insights
Hepatitis C virus (HCV) genotypes 1 and 4 are linked to insulin resistance in chronic hepatitis C (CHC) patients. Ethnicity did not show an independent association with metabolic disorders in this CHC cohort.
Area of Science:
- Hepatology
- Metabolic Disorders
- Virology
Background:
- Hepatitis C virus (HCV) infection is associated with an increased risk of metabolic disorders.
- Genotypes 1 and 4 of HCV are particularly implicated in this risk.
- Chronic hepatitis C (CHC) patients require evaluation for metabolic complications.
Purpose of the Study:
- To investigate the associations between metabolic disorders, ethnicity, and HCV genotype in a large CHC patient cohort.
- To determine the prevalence of metabolic syndrome and insulin resistance in CHC patients.
- To identify independent predictors of insulin resistance in CHC.
Main Methods:
- A cohort of 454 consecutive CHC patients was analyzed.
- Demographic data and metabolic syndrome variables were collected.
- Insulin resistance was assessed using the homeostasis model for the assessment of insulin resistance (HOMA-IR) test.
Main Results:
- The prevalence of metabolic syndrome was 12.4% among CHC patients.
- Insulin resistance was present in 35.0% of patients tested (n=140).
- HCV genotypes 1/4 were significantly associated with higher rates of insulin resistance and Black African ethnicity compared to genotypes 2/3. Genotypes 1/4 and older age were independent predictors of insulin resistance.
Conclusions:
- Insulin resistance in CHC is independently associated with HCV genotypes 1 and 4.
- Ethnicity was not found to be an independent risk factor for metabolic disorders in this CHC population.
Background & Aim:
Patients with hepatitis C virus (HCV) infection, especially those with genotypes 1 and 4, have an increased risk of developing metabolic disorders. The aim of this study was to evaluate the associations among metabolic disorders, ethnicity and genotype in a large cohort of patients with chronic hepatitis C (CHC).
Patients And Methods:
All consecutive patients with CHC who were seen in our hepato-gastroenterology unit between January 2002 and September 2008 were included. Demographical data and variables related to the metabolic syndrome were collected. Insulin resistance was assessed using the homeostasis model for the assessment of insulin resistance test (HOMA-IR) test.
Results:
Among the 454 CHC patients, the prevalence of the metabolic syndrome was 12.4%. The HOMA-IR test was performed in 140 patients, and 35.0% had insulin resistance. There were more Black Africans among the patients with genotypes 1/4 than among those with genotypes 2/3 (32.0 vs 1.2%, P<0.0001). Insulin resistance was more common in patients with genotypes 1/4 than in those with genotypes 2/3 (17 vs 1.7%, P=0.0001 and 43.3 vs 16.3%, P=0.001, respectively). Genotypes 1/4 were more frequently present in patients with insulin resistance than in those without insulin resistance (85.7 vs 60.5%, P=0.001). By logistic regression, genotypes 1/4 [odds ratio (OR)=2.79; 95% confidence interval (CI): 1.09-7.12, P=0.032] and older age (OR=1.03; 95% CI: 1.004-1.06, P=0.024) were independently associated with the presence of insulin resistance.
Conclusions:
In CHC, insulin resistance is independently associated with the presence of genotypes 1/4. Ethnicity is not independently associated with metabolic disorders in patients with CHC.
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