PMID- 12021716 OWN - NLM STAT- MEDLINE DCOM- 20020613 LR - 20190822 IS - 0741-5214 (Print) IS - 0741-5214 (Linking) VI - 35 IP - 5 DP - 2002 May TI - Human leukocyte antigen class II immune response genes, female gender, and cigarette smoking as risk and modulating factors in abdominal aortic aneurysms. PG - 988-93 AB - OBJECTIVE: Aortic inflammation and the genes that regulate the immune response play an important role in abdominal aortic aneurysm pathogenesis. However, the modulating effects of such genetic and other environmental factors on the severity on aneurysm inflammation is not known. The objective of this study was to determine the influence of the human leukocyte antigen (HLA) class II genes, gender, and environmental factors on degree of abdominal aortic aneurysm tissue inflammation. METHODS: Aneurysm specimens were obtained at the time of operation from 96 consecutive patients who underwent abdominal aortic aneurysm repair and were graded for degree of histologic inflammation. Multivariate analysis was used to determine the association of genetic and environmental factors with degree of inflammation and to determine the HLA-associated disease risk for aneurysm. RESULTS: Active cigarette smoking and female gender were independently associated with high-grade tissue inflammation identified histologically (odds ratio [OR], confidence interval [CI]: 5.6, 1.6 to 19.3; and 6.0, 1.4 to 26.2, respectively), and a specific HLA allele (DR B1(*)01) was inversely associated with inflammation (OR, CI: 0.2, 0.04 to 0.7). Overall, the HLA-DR B1(*)02 and B1(*)04 alleles were significantly associated with disease risk, more than doubling risk for abdominal aortic aneurysm (OR, CI: 2.5, 1.4 to 4.3; and 2.1, 1.2 to 3.7, respectively). CONCLUSION: Active cigarette smoking and female gender are significant disease-modulating factors associated with increased abdominal aortic aneurysm inflammation. In addition, the HLA class II immune response genes possess both disease modulating and disease risk properties, which may be useful in early aneurysm detection and surveillance. FAU - Rasmussen, Todd E AU - Rasmussen TE AD - Department of Surgery, Uniformed Services University of Health Sciences, Malcolm Grow USAF Medical Center, Andrews Air Force Base, MD 20762, USA. FAU - Hallett, John W Jr AU - Hallett JW Jr FAU - Tazelaar, Henry D AU - Tazelaar HD FAU - Miller, Virginia M AU - Miller VM FAU - Schulte, Stephanie AU - Schulte S FAU - O'Fallon, W Michael AU - O'Fallon WM FAU - Weyand, Cornelia M AU - Weyand CM LA - eng GR - R01 AI 44142/AI/NIAID NIH HHS/United States GR - R01 AR 42527/AR/NIAMS NIH HHS/United States GR - R01 EY 11916/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Vasc Surg JT - Journal of vascular surgery JID - 8407742 RN - 0 (HLA Antigens) SB - IM MH - Aged MH - Aged, 80 and over MH - Aortic Aneurysm, Abdominal/*etiology/*genetics/immunology MH - Female MH - Genes, MHC Class II/*genetics/immunology MH - HLA Antigens/*genetics/immunology MH - Humans MH - Male MH - Middle Aged MH - Risk Factors MH - Severity of Illness Index MH - Sex Factors MH - Smoking/*adverse effects/*genetics/immunology EDAT- 2002/05/22 10:00 MHDA- 2002/06/14 10:01 CRDT- 2002/05/22 10:00 PHST- 2002/05/22 10:00 [pubmed] PHST- 2002/06/14 10:01 [medline] PHST- 2002/05/22 10:00 [entrez] AID - S0741521402274534 [pii] AID - 10.1067/mva.2002.121753 [doi] PST - ppublish SO - J Vasc Surg. 2002 May;35(5):988-93. doi: 10.1067/mva.2002.121753.