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Hepatitis C infection and clearance: impact on atherosclerosis and cardiometabolic risk factors
Aya Mostafa1, Mostafa K Mohamed, Mohamed Saeed
1Department of Community Medicine, Faculty of Medicine, AinShams University, Cairo, Egypt.
Insights
Hepatitis C virus (HCV) infection is linked to diabetes and favorable lipids, but atherosclerosis risk remains similar after HCV clearance. Chronic HCV infection directly increases atherosclerosis risk, even after accounting for other cardiovascular factors.
Area of Science:
- Hepatology and Viral Infections
- Cardiovascular Disease Research
- Metabolic Syndrome Studies
Background:
- Chronic hepatitis C (HCV) infection is paradoxically associated with diabetes and favorable lipid profiles.
- This association presents a complex cardiometabolic profile in individuals with HCV.
Purpose of the Study:
- To investigate the impact of HCV infection and its clearance on atherosclerosis.
- To examine the cardiometabolic response following HCV eradication.
Main Methods:
- A cross-sectional study conducted in Egypt.
- Involved 329 chronically infected, 173 cleared infection, and 795 never infected participants (age ≥35).
- Assessed diabetes, glucose, lipids, visceral fat, and carotid intima-media thickness (IMT) via ultrasound.
Main Results:
- Increased diabetes prevalence and mesenteric fat deposition in both chronic and cleared HCV groups compared to never infected.
- Lower LDL cholesterol in chronic HCV, normalizing after clearance.
- No significant difference in carotid IMT by infection status initially, but increased IMT in chronic HCV after adjusting for risk factors.
Conclusions:
- HCV clearance normalizes lipid profiles but does not fully resolve hyperglycemia or visceral adiposity.
- Chronic HCV infection appears to have a direct detrimental effect on atherosclerosis (increased IMT).
- Cardiovascular risk in HCV is multifactorial, influenced by infection status, metabolic changes, and clearance outcomes.
Background:
Chronic hepatitis C (HCV) infection is associated with diabetes and favourable lipids.
Objective:
To study the effect of this paradox on atherosclerosis and cardiometabolic response to HCV clearance.
Design:
Cross-sectional study.
Setting:
Egypt.
Participants:
329 chronically infected, 173 with cleared infection and 795 never infected participants aged >or=35 attended for baseline investigations. A subsample of 192, 115 and 187, respectively, underwent ultrasound.
Main Outcome Measures:
Diabetes, fasting glucose, lipids and fat deposition on ultrasound. Carotid intima-media thickness (IMT) measured atherosclerosis.
Results:
Diabetes prevalence was raised (10.1% (95% CI 6.6 to 13.6), p=0.04) in HCV chronic, and cleared (10.1% (5.6 to 14.8), p=0.08) individuals versus 6.6% (4.9 to 8.3) in those never infected. Mesenteric fat was raised in chronic (36.4 mm (34.5 to 38.2), p=0.004), and cleared infection (37.8 (35.6 to 40.0), p<0.0001) vs never infected (32.7 (31.0 to 34.4)). LDL cholesterol was lower in chronic (2.69 mmol/l (2.53 to 2.86), p<0.001), but similar in cleared (3.56 (3.34 to 3.78), p=0.4) versus never infected (3.45 (3.30 to 3.60)). Carotid IMT did not differ by infection status: 0.73 (0.70 to 0.76, p=0.4), 0.71 (0.66 to 0.75, p=0.9), 0.71 (0.68 to 0.74), respectively. Adjustment for cardiovascular risk factors increased IMT in chronic infection (0.76 (0.72 to 0.79), p=0.02) versus never infected individuals (0.70 (0.67 to 0.73)).
Conclusions:
Hepatic function normalisation with HCV clearance may account for reversal of favourable lipids observed with HCV infection. Hyperglycaemia and visceral adiposity appear less amenable to HCV resolution. These different cardiovascular risk patterns may determine equivalent atherosclerosis risk by infection status. However, once these factors were accounted for, those with chronic infection had raised IMT, suggesting a direct effect of infection.
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