title: Serum amyloid P (SAP) is associated with impaired brachial artery flow-mediated dilation in chronically HIV-1 infected adults on stable antiretroviral therapy.
abstract: This study aimed to evaluate the relationship between inflammatory biomarkers and endothelial dysfunction (ED), as measured by brachial artery flow-mediated dilation (FMD).
  
  
  
  We conducted a cross-sectional analysis utilizing baseline data of 135 participants with HIV infection on stable antiretroviral therapy (ART) in the Hawaii Aging with HIV-Cardiovascular (HAHC-CVD) study who had available baseline inflammatory biomarkers and brachial artery FMD measurements.
  
  
  
  We observed significant associations between brachial artery FMD and baseline brachial artery diameter, age, male gender, traditional cardiovascular disease (CVD) risk factors such as BMI, waist to hip ratio, hypertension, systolic blood pressure (BP), diastolic BP, and LDL cholesterol, and 10-year coronary heart disease (CHD) risk estimated by Framingham risk score (FRS). Of all biomarkers tested, higher level of C-reactive protein (CRP) (beta =  - 0.695, P = 0.030) and serum amyloid P (SAP) (beta =  - 1.318, P = 0.021) were significantly associated with lower brachial artery FMD in univariable regression analysis. After adjusting for baseline brachial artery diameter, age, and selected traditional CVD risk factors in multivariable model, SAP remained significantly associated with brachial artery FMD (beta =  - 1.094, P = 0.030), while CRP was not (beta =  - 0.391, P = 0.181).
  
  
  
  Serum amyloid P was independently associated with impaired brachial artery FMD and may potentially relate to ED and increased CVD risk in HIV-infected patients on stable ART.
authors.affiliation: Hawaii Center for AIDS, Department of Medicine, University of Hawaii John A. Burns School of Medicine , Honolulu,HI, USA.
authors.forename: Nath
authors.initials: N
authors.lastname: Zungsontiporn
authors.forename: Lishomwa C
authors.initials: LC
authors.lastname: Ndhlovu
authors.forename: Brooks I
authors.initials: BI
authors.lastname: Mitchell
authors.forename: James H
authors.initials: JH
authors.lastname: Stein
authors.forename: Kalpana J
authors.initials: KJ
authors.lastname: Kallianpur
authors.forename: Beau
authors.initials: B
authors.lastname: Nakamoto
authors.forename: Sheila M
authors.initials: SM
authors.lastname: Keating
authors.forename: Philip J
authors.initials: PJ
authors.lastname: Norris
authors.forename: Scott A
authors.initials: SA
authors.lastname: Souza
authors.forename: Cecilia M
authors.initials: CM
authors.lastname: Shikuma
authors.forename: Dominic C
authors.initials: DC
authors.lastname: Chow
mesh_terms: D019380:Anti-HIV Agents / Q000627:therapeutic use*; D015415:Biomarkers; D001916:Brachial Artery / Q000502:physiology*; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D005260:Female; D015658:HIV Infections / Q000150:complications* / Q000188:drug therapy; D015497:HIV-1; D006801:Humans; D007249:Inflammation; D008297:Male; D008875:Middle Aged; D012367:RNA, Viral; D000683:Serum Amyloid P-Component / Q000378:metabolism*; D014664:Vasodilation / Q000502:physiology*
chemical_list: D019380:Anti-HIV Agents; D015415:Biomarkers; D012367:RNA, Viral; D000683:Serum Amyloid P-Component
keywords: Brachial artery flow-mediated dilation,; Endothelial dysfunction; HIV infection; Inflammatory biomarkers; Pentraxin; Serum amyloid P