title: Clinical factors associated with plasma F2-isoprostane levels in HIV-infected adults.
abstract: OBJECTIVE
  Oxidant stress may be an effect of antiretroviral therapy (ART) or chronic HIV infection. Plasma F2-isoprostanes (F2-IsoP) reflect lipid peroxidation and oxidant stress and have been described in ART-associated toxicities. We explored factors associated with F2-IsoP in HIV-infected adults.
  
  
  METHODS
  HIV-infected adults enrolled in this cross-sectional study were (a) on ART including zidovudine or stavudine but not non-nucleoside reverse transcriptase inhibitors (NNRTI), (b) on ART including NNRTI, or (c) not on ART. Plasma F2-IsoP levels were quantified by GC/MS, and clinical and laboratory data were collected at enrollment.
  
  
  RESULTS
  Among 285 participants, 24% were female, 37% were African American, and 194 (68%) were on ART; 44 (23%) of whom were receiving efavirenz, 45 (23%) nevirapine, and 85 (44%) protease inhibitors. Median F2-IsoP was lower in those on NNRTI than those on ART without NNRTI (p = .02). In a multivariable model, factors independently associated with increased F2-IsoP were female sex (p = .002), higher BMI (p = .01), and heavy smoking (p = .004). There was a trend toward lower F2-IsoP among nevirapine users (p = .054).
  
  
  CONCLUSIONS
  Among HIV-infected adults, oxidant stress status differs by sex, BMI, smoking status, and perhaps specific ART. Prospective studies should better define relationships between oxidant stress and complications of HIV infection and its therapy.
authors.affiliation: Department of Surgery, Vanderbilt University School of Medicine, Nashville, Tennessee, USA.
authors.forename: Leigh Anne
authors.initials: LA
authors.lastname: Redhage
authors.forename: Ayumi
authors.initials: A
authors.lastname: Shintani
authors.forename: David W
authors.initials: DW
authors.lastname: Haas
authors.forename: Nkiruka
authors.initials: N
authors.lastname: Emeagwali
authors.forename: Milica
authors.initials: M
authors.lastname: Markovic
authors.forename: Ikwo
authors.initials: I
authors.lastname: Oboho
authors.forename: Christopher
authors.initials: C
authors.lastname: Mwenya
authors.forename: Husamettin
authors.initials: H
authors.lastname: Erdem
authors.forename: Edward P
authors.initials: EP
authors.lastname: Acosta
authors.forename: Jason D
authors.initials: JD
authors.lastname: Morrow
authors.forename: Todd
authors.initials: T
authors.lastname: Hulgan
mesh_terms: D000328:Adult; D000368:Aged; D000480:Alkynes; D044966:Anti-Retroviral Agents / Q000627:therapeutic use*; D048588:Benzoxazines / Q000627:therapeutic use; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D003521:Cyclopropanes; D004359:Drug Therapy, Combination; D028441:F2-Isoprostanes / Q000097:blood*; D005260:Female; D015658:HIV Infections / Q000097:blood* / Q000188:drug therapy*; D017320:HIV Protease Inhibitors / Q000627:therapeutic use; D006801:Humans; D016014:Linear Models; D015227:Lipid Peroxidation / Q000187:drug effects; D008297:Male; D008875:Middle Aged; D018384:Oxidative Stress / Q000187:drug effects*; D018894:Reverse Transcriptase Inhibitors / Q000627:therapeutic use; D012307:Risk Factors; D012737:Sex Factors; D013714:Tennessee; D055815:Young Adult; D015215:Zidovudine / Q000627:therapeutic use
chemical_list: D000480:Alkynes; D044966:Anti-Retroviral Agents; D048588:Benzoxazines; D003521:Cyclopropanes; D028441:F2-Isoprostanes; D017320:HIV Protease Inhibitors; D018894:Reverse Transcriptase Inhibitors; D015215:Zidovudine; C098320:efavirenz