title: Arterial stiffness and carotid intima-media thickness in HIV infected patients.
abstract: BACKGROUND
  Cardiovascular disease is an increasing cause of morbidity and mortality in HIV-infected patients. The increased cardiovascular risk is linked to traditional risk factors for atherosclerosis but also, to HIV infection itself which can damage the arterial wall and the antiretroviral therapy (ART) implicated in metabolic disturbances. The aim of our study was to identify the effects of HIV and ART on carotid artery intima-media thickness (C-IMT) and on arterial stiffness, parameters which are used for the evaluation of cardiovascular risk.
  
  
  METHODS
  A cross-sectional case-control study of 63 HIV-infected patients (56 exposed to ART, 7 ART naive) and 36 controls matched for age and sex was performed. C-IMT, and arterial stiffness were measured ultrasonographically using an ALOKA ProSound α 10 echo-device. Parameters of arterial stiffness were measured at the common carotid and brachial arteries.
  
  
  RESULTS
  HIV-infected patients had a greater C-IMT than controls (p<0.01). There were significant differences regarding arterial stiffness parameters in HIV infected patients compared to controls, and between the groups of patients with different types of ART, especially at the level of carotid artery. Patients with HIV infection had reduced carotid compliance compared to controls (p<0.01). Patients exposed to reverse transcriptase inhibitort (RTI), had increased β stiffness index (p=0.01) and carotid PWV (p=0.02) and reduced carotid compliance (p<0.01) compared to controls.
  
  
  CONCLUSIONS
  HIV infection and ARV treatment is associated with increased C-IMT, and an increase in the arterial stiffness of the large arteries. These vascular modifications are possible causes of increased cardiovascular risk observed in HIV infected patients.
authors.affiliation: Infectious Diseases Hospital, Cluj-Napoca, Romania. ancapapita@gmail.com
authors.forename: Anamaria
authors.initials: A
authors.lastname: Papita
authors.forename: Adriana
authors.initials: A
authors.lastname: Albu
authors.forename: Daniela
authors.initials: D
authors.lastname: Fodor
authors.forename: Corina
authors.initials: C
authors.lastname: Itu
authors.forename: Dumitru
authors.initials: D
authors.lastname: Cârstina
mesh_terms: D000328:Adult; D023241:Antiretroviral Therapy, Highly Active / Q000009:adverse effects; D001916:Brachial Artery / Q000000981:diagnostic imaging* / Q000503:physiopathology; D002318:Cardiovascular Diseases / Q000000981:diagnostic imaging* / Q000209:etiology* / Q000503:physiopathology; D002339:Carotid Arteries / Q000000981:diagnostic imaging* / Q000503:physiopathology; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D003430:Cross-Sectional Studies; D005260:Female; D015658:HIV Infections / Q000150:complications* / Q000188:drug therapy; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D012307:Risk Factors; D018709:Statistics, Nonparametric; D017539:Tunica Intima / Q000000981:diagnostic imaging* / Q000503:physiopathology; D017540:Tunica Media / Q000000981:diagnostic imaging* / Q000503:physiopathology; D014463:Ultrasonography