PMID- 18827882 OWN - NLM STAT- MEDLINE DCOM- 20100315 LR - 20181113 IS - 1935-2735 (Electronic) IS - 1935-2727 (Print) IS - 1935-2727 (Linking) VI - 2 IP - 10 DP - 2008 Oct 1 TI - Protective and enhancing HLA alleles, HLA-DRB1*0901 and HLA-A*24, for severe forms of dengue virus infection, dengue hemorrhagic fever and dengue shock syndrome. PG - e304 LID - 10.1371/journal.pntd.0000304 [doi] LID - e304 AB - BACKGROUND: Dengue virus (DV) infection is one of the most important mosquito-borne diseases in the tropics. Recently, the severe forms, dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS), have become the leading cause of death among children in Southern Vietnam. Protective and/or pathogenic T cell immunity is supposed to be important in the pathogenesis of DHF and DSS. METHODOLOGY/PRINCIPAL FINDINGS: To identify HLA alleles controlling T cell immunity against dengue virus (DV), we performed a hospital-based case control study at Children's Hospital No.2, Ho Chi Minh City (HCMC), and Vinh Long Province Hospital (VL) in Southern Vietnam from 2002 to 2005. A total of 211 and 418 patients with DHF and DSS, respectively, diagnosed according to the World Health Organization (WHO) criteria, were analyzed for their characteristic HLA-A, -B and -DRB1 alleles. Four hundred fifty healthy children (250 from HCMC and 200 from VL) of the same Kinh ethnicity were also analyzed as population background. In HLA class I, frequency of the HLA-A*24 showed increased tendency in both DHF and DSS patients, which reproduced a previous study. The frequency of A*24 with histidine at codon 70 (A*2402/03/10), based on main anchor binding site specificity analysis in DSS and DHF patients, was significantly higher than that in the population background groups (HCMC 02-03 DSS: OR = 1.89, P = 0.008, DHF: OR = 1.75, P = 0.033; VL 02-03 DSS: OR = 1.70, P = 0.03, DHF: OR = 1.46, P = 0.38; VL 04-05 DSS: OR = 2.09, P = 0.0075, DHF: OR = 2.02, P = 0.038). In HLA class II, the HLA-DRB1*0901 frequency was significantly decreased in secondary infection of DSS in VL 04-05 (OR = 0.35, P = 0.0025, Pc = 0.03). Moreover, the frequency of HLA-DRB1*0901 in particular was significantly decreased in DSS when compared with DHF in DEN-2 infection (P = 0.02). CONCLUSION: This study improves our understanding of the risk of HLA-class I for severe outcome of DV infection in the light of peptide anchor binding site and provides novel evidence that HLA-class II may control disease severity (DHF to DSS) in DV infection. FAU - Nguyen, Thi Phuong Lan AU - Nguyen TP AD - Department of Immunogenetics, Institute of Tropical Medicine (NEKKEN), Nagasaki University, Japan. FAU - Kikuchi, Mihoko AU - Kikuchi M FAU - Vu, Thi Que Huong AU - Vu TQ FAU - Do, Quang Ha AU - Do QH FAU - Tran, Thi Thuy AU - Tran TT FAU - Vo, Dinh Tham AU - Vo DT FAU - Ha, Manh Tuan AU - Ha MT FAU - Vo, Van Tuong AU - Vo VT FAU - Cao, Thi Phi Nga AU - Cao TP FAU - Tran, Van Dat AU - Tran VD FAU - Oyama, Toshifumi AU - Oyama T FAU - Morita, Kouichi AU - Morita K FAU - Yasunami, Michio AU - Yasunami M FAU - Hirayama, Kenji AU - Hirayama K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20081001 PL - United States TA - PLoS Negl Trop Dis JT - PLoS neglected tropical diseases JID - 101291488 RN - 0 (HLA-A Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adolescent MH - Case-Control Studies MH - Child MH - Child, Preschool MH - Dengue Virus/isolation & purification/physiology MH - Female MH - *Genetic Predisposition to Disease MH - HLA-A Antigens/*genetics/immunology MH - HLA-DR Antigens/*genetics/immunology MH - HLA-DRB1 Chains MH - Humans MH - Infant MH - Male MH - Severe Dengue/*genetics/*immunology/virology PMC - PMC2553281 COIS- The authors have declared that no competing interests exist. EDAT- 2008/10/02 09:00 MHDA- 2010/03/17 06:00 PMCR- 2008/10/01 CRDT- 2008/10/02 09:00 PHST- 2007/12/18 00:00 [received] PHST- 2008/08/29 00:00 [accepted] PHST- 2008/10/02 09:00 [pubmed] PHST- 2010/03/17 06:00 [medline] PHST- 2008/10/02 09:00 [entrez] PHST- 2008/10/01 00:00 [pmc-release] AID - 07-PNTD-RA-0331R2 [pii] AID - 10.1371/journal.pntd.0000304 [doi] PST - epublish SO - PLoS Negl Trop Dis. 2008 Oct 1;2(10):e304. doi: 10.1371/journal.pntd.0000304.