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Peptide-based Identification of Functional Motifs and their Binding Partners
Published on: June 30, 2013
Cystatin C, adipokines and cardiovascular risk in HIV infected patients
Katia Falasca1, Claudio Ucciferri, Paola Mancino
1Infectious Disease Clinic, Department of Medicine and Science of Aging, G. d'Annunzio University, School of Medicine, Chieti-Pescara, Italy.
Insights
HIV patients on combined antiretroviral therapy (cART) with high cardiovascular risk (CVR) show elevated leptin, IL-6, IL-18, and cystatin C. Cystatin C may serve as an early marker for increased CVR in this population.
Area of Science:
- Endocrinology
- Infectious Diseases
- Cardiology
Background:
- Combined antiretroviral therapy (cART) is standard for HIV management.
- HIV-infected individuals on cART may face increased cardiovascular risk (CVR).
- Biomarkers for assessing CVR in HIV patients are crucial.
Purpose of the Study:
- To evaluate leptin, adiponectin, and cystatin C roles in HIV+ patients on cART.
- To stratify patients based on cardiovascular risk (CVR).
- To identify potential biomarkers for CVR in HIV-infected individuals.
Main Methods:
- 56 HIV+ patients on cART were assessed for CVR using the Framingham score.
- Patients were divided into high (15) and low (41) CVR groups.
- Viro-immunological, metabolic, inflammatory markers, and body composition were measured.
Main Results:
- High CVR group exhibited higher glucose/lipid metabolism parameters, cystatin C, microalbuminuria, blood pressure, BMI, IL-6, IL-18, and leptin.
- Adiponectin levels were higher in the low CVR group.
- Positive correlations were found between visceral adipose tissue (VAT) and leptin/IL-18, and negative with adiponectin. A significant positive correlation between CVR and cystatin C was observed.
Conclusions:
- HIV+ patients on cART with high CVR present elevated leptin, IL-6, IL-18, and cystatin C, with hypoadiponectinemia.
- Cystatin C shows a positive correlation with CVR in HIV+ patients, suggesting its potential as an early CVR marker.
- These findings highlight the utility of specific biomarkers in managing cardiovascular health in HIV-infected populations.
Objectives:
To value the role of leptin, adiponectin and cystatin C in HIV infected patients treated with combined antiretroviral therapy (cART) subdivided for cardiovascular risk (CVR).
Methods:
56 HIV+ cART treated patients were screened by Framingham score and subdivided in 2 groups: A) 15 with "high" CVR (>10%) and B) 41 with "low" CVR (<10%). Viro-immunological parameters, triglycerides, total cholesterol, HDL and LDL cholesterol, blood pressure, microalbuminuria, fasting glucose, insulinemia, HOMA-IR, CRP, cystatin C, IL-18, IL-6, leptin, adiponectin, antropometric parameters and total abdominal tissue (TAT), subcutaneous (SAT) and visceral abdominal tissue (VAT) were measured.
Results:
Group A showed statistically higher levels of parameters of glucose and lipid metabolism, cystatin-C, microalbuminuria, blood pressure and BMI. Moreover levels of IL-6, IL-18 and leptin were statistically higher in group A, whereas adiponectin was statistically increased in group B. Data showed a positive correlation between VAT, leptin levels (r=0.37, p=0.005) and IL-18 (r=0.32, p=0.01), and a negative correlation between VAT and adiponectin (r=-0.30, p=0.02). Finally group A showed statistically higher levels of cystatin C and there was a positive correlation between CVR and cystatin C (r=0.39, p=0.003).
Conclusions:
The main results of this study are that HIV positive subjects cART treated with "high" CVR have increased plasma levels of leptin, IL-6, IL-18 and cystatin C and hypoadiponectinemia. Moreover, the positive correlation between CVR and cystatin C found in this study for the first time in HIV positive patients, indicates that cystatin C could serve as early marker of enhanced CVR in the HIV-infected population.
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