Hepatitis C virus infection is associated with insulin resistance among older adults with or at risk of HIV infection

Andrea A. Howard, Yungtai Lo, Michelle Floris-Moore, Robert S. Klein, Norman Fleischer, Ellie Schoenbaum

Research output: Contribution to journalArticle

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Abstract

OBJECTIVES: To determine the associations of hepatitis C virus (HCV) infection with insulin resistance and abnormal glucose tolerance in a cohort of older adults with or at risk of HIV infection. DESIGN: A cross-sectional study of 267 HIV-infected and 179 at-risk-uninfected adults without a history of diabetes mellitus. METHODS: HCV antibody assays and RNA levels were performed to assess HCV status. Antiretroviral use, family history of diabetes, sedentary behavior, and sociodemographic data were obtained using standardized interviews. Fasting insulin levels and oral glucose tolerance tests were performed to assess two outcomes, the homeostasis model assessment of insulin resistance and abnormal glucose tolerance [impaired glucose tolerance (IGT) or diabetes]. RESULTS: Of 446 participants, 265 (59%) were HCV seropositive; of these, 199 (75%) had detectable HCV-RNA levels. Insulin resistance was greater among HCV-seropositive compared with seronegative participants, adjusting for body mass index, Hispanic ethnicity, age greater than 55 years, sedentary behavior (watching television > 4 h/day), HIV status, HAART, and protease inhibitor (PI) use. Ninety-eight participants (22%) had abnormal glucose tolerance (69 with IGT and 29 with diabetes). Among HIV-infected participants, 25% were on non-PI HAART and 52% were on PI HAART, but HAART and PI use were not associated with insulin resistance or abnormal glucose tolerance. Among obese participants, abnormal glucose tolerance was more common in HCV-seropositive than seronegative individuals, whereas among non-obese participants there was no association. CONCLUSION: The potential impact of HCV co-infection and obesity on glucose metabolism should be recognized in clinical care, and addressed in future research studies of HIV-infected individuals.

Original languageEnglish (US)
Pages (from-to)633-641
Number of pages9
JournalAIDS
Volume21
Issue number5
DOIs
StatePublished - Mar 2007

Fingerprint

Virus Diseases
Hepacivirus
HIV Infections
Insulin Resistance
Highly Active Antiretroviral Therapy
Glucose
Protease Inhibitors
HIV
Glucose Intolerance
RNA
Hepatitis C Antibodies
Television
Glucose Tolerance Test
Coinfection
Hispanic Americans
Fasting
Diabetes Mellitus
Body Mass Index
Homeostasis
Obesity

Keywords

  • Hepatitis C virus
  • HIV
  • Impaired glucose tolerance
  • Insulin resistance
  • Obesity
  • Type 2 diabetes

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

Cite this

Hepatitis C virus infection is associated with insulin resistance among older adults with or at risk of HIV infection. / Howard, Andrea A.; Lo, Yungtai; Floris-Moore, Michelle; Klein, Robert S.; Fleischer, Norman; Schoenbaum, Ellie.

In: AIDS, Vol. 21, No. 5, 03.2007, p. 633-641.

Research output: Contribution to journalArticle

Howard, Andrea A. ; Lo, Yungtai ; Floris-Moore, Michelle ; Klein, Robert S. ; Fleischer, Norman ; Schoenbaum, Ellie. / Hepatitis C virus infection is associated with insulin resistance among older adults with or at risk of HIV infection. In: AIDS. 2007 ; Vol. 21, No. 5. pp. 633-641.
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AU - Lo, Yungtai

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AU - Fleischer, Norman

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N2 - OBJECTIVES: To determine the associations of hepatitis C virus (HCV) infection with insulin resistance and abnormal glucose tolerance in a cohort of older adults with or at risk of HIV infection. DESIGN: A cross-sectional study of 267 HIV-infected and 179 at-risk-uninfected adults without a history of diabetes mellitus. METHODS: HCV antibody assays and RNA levels were performed to assess HCV status. Antiretroviral use, family history of diabetes, sedentary behavior, and sociodemographic data were obtained using standardized interviews. Fasting insulin levels and oral glucose tolerance tests were performed to assess two outcomes, the homeostasis model assessment of insulin resistance and abnormal glucose tolerance [impaired glucose tolerance (IGT) or diabetes]. RESULTS: Of 446 participants, 265 (59%) were HCV seropositive; of these, 199 (75%) had detectable HCV-RNA levels. Insulin resistance was greater among HCV-seropositive compared with seronegative participants, adjusting for body mass index, Hispanic ethnicity, age greater than 55 years, sedentary behavior (watching television > 4 h/day), HIV status, HAART, and protease inhibitor (PI) use. Ninety-eight participants (22%) had abnormal glucose tolerance (69 with IGT and 29 with diabetes). Among HIV-infected participants, 25% were on non-PI HAART and 52% were on PI HAART, but HAART and PI use were not associated with insulin resistance or abnormal glucose tolerance. Among obese participants, abnormal glucose tolerance was more common in HCV-seropositive than seronegative individuals, whereas among non-obese participants there was no association. CONCLUSION: The potential impact of HCV co-infection and obesity on glucose metabolism should be recognized in clinical care, and addressed in future research studies of HIV-infected individuals.

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KW - HIV

KW - Impaired glucose tolerance

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KW - Obesity

KW - Type 2 diabetes

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