alexa HIV-Infected Men with an Elevated Level of Serum Cystat
ISSN: 1948-5964

Journal of Antivirals & Antiretrovirals
Open Access

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Research Article

HIV-Infected Men with an Elevated Level of Serum Cystatin C have a High Likelihood of Developing Cancers

Naoki Yanagisawa1, Minoru Ando1,2*, Ken Tsuchiya1 and Kosaku Nitta1

1Department IV of Internal Medicine, Tokyo Women’s Medical University, Tokyo, Japan

2Department of Nephrology, Tokyo Metropolitan Komagome Hospital, Tokyo, Japan

*Corresponding Author:
Minoru Ando
Department of Nephrology
TokyoMetropolitan Komagome Hospital
Honkomagome, Bunkyo-Ku
Tokyo 113-0021,Japan
Tel: +81-3-3823-2101
Fax: +81-3-3824-1552
E-mail:
[email protected]

Received Date: March 19, 2012; Accepted Date: April 21, 2012; Published Date:April 23, 2012

Citation: Yanagisawa N, Ando M, Tsuchiya K, Nitta K (2012) HIV-Infected Men with an Elevated Level of Serum Cystatin C have a High Likelihood of Developing Cancers. J Antivir Antiretrovir 4: 038-042. doi: 10.4172/jaa.1000044

Copyright: ©2012 Yanagisawa N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Background: HIV-infected individuals are at high risk for morbidity and mortality regardless of good infection control with highly active antiretroviral therapy (HAART). The residual inflammation after apparent good infection control with HAART may be responsible for an increased risk of mortality including cancers. Serum cystatin C is not only a sensitive marker for renal dysfunction but also a potential marker for inflammation, which may suggest that this marker is something more than a measure of renal function.
Materials and methods: A total of 520 HIV-infected men under good infection control with HAART were enrolled in a 3-year prospective cohort study. The incidence of cancers was investigated with special reference to serum cystatin C level. Cumulative incidence of cancers over time was analyzed by Kaplan-Meier methods. A Cox proportional hazards model was used to calculate the Hazard Ratio (HR) of developing cancers, adjusted for age, smoking habit, CD4 cell count, serum albumin, estimated glomerular filtration rate below 60 mL/min/1.73m2, C-reactive protein, and presence of comorbidities including diabetes mellitus, hypertension, and hepatic viral infection.
Results: During the follow-up, cancers developed in 14 (2.7%) subjects. Death occurred in 4 from cancers. The Kaplan-Meier estimate for cancer incidence significantly increased in patients with serum cystatin C elevation (≥ 1.0 mg/L). The HR (95% confidence interval) of cancer incidence was 3.56 (1.08-11.2) for elevation of serum cystatin C, although other markers of inflammation were not significant.
Conclusion: The examination of serum cystatin C may enable earlier recognition of cancers among HIV infected individuals.

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