PMID- 19522715 OWN - NLM STAT- MEDLINE DCOM- 20100111 LR - 20091014 IS - 1468-3083 (Electronic) IS - 0926-9959 (Linking) VI - 23 IP - 11 DP - 2009 Nov TI - Brain-derived neurotrophic factor gene polymorphisms and serum levels in Chinese atopic dermatitis patients. PG - 1277-81 LID - 10.1111/j.1468-3083.2009.03308.x [doi] AB - BACKGROUND: Brain-derived neurotrophic factor (BDNF) plays an important role in the pathogenesis of atopic dermatitis (AD). Whether BDNF gene polymorphisms are associated with Chinese AD remains totally unknown. OBJECTIVE: The aim is to determine if BDNF gene C270T and G196A polymorphisms are associated with Chinese AD, and analyse the clinical relevance of BDNF gene polymorphisms and BDNF serum levels. Methods We conducted a case-control association analysis (160 patients and 169 controls) in Northern Chinese subjects. Genotyping was performed by restriction fragment length polymorphism, and serum levels of BDNF were measured using enzyme-linked immunosorbent assay. RESULTS: For C270T, there were significant differences in C/T genotype distribution (P = 0.003) and T allele frequencies (P = 0.004) between AD patients and controls in the whole dataset. Higher C/T genotype frequencies were found in male AD (10.6% vs. 1.1%, P = 0.018) and in intrinsic AD (IAD; 15.79% vs. 2.91%, P = 0.008). No association between G196A polymorphism and AD was observed in the whole cohort, while A allele was much more frequent in AD patients with atopy in first-degree relatives (65.8% vs. 34.2%, P = 0.038). Serum BDNF levels were correlated with IAD severity as measured by Scoring Atopic Dermatitis index (r = 0.576, P < 0.001). CONCLUSION: T allele in C270T may be a risk factor for AD, especially in IAD and male AD. A allele in G196A may be a risk factor in AD patients with atopy in first-degree relatives. Serum BDNF levels were correlated with the severity of IAD. FAU - Ma, L AU - Ma L AD - State Key Department of Dermatology, No.1 Hospital of China Medical University, Shenyang, China. FAU - Gao, X-H AU - Gao XH FAU - Zhao, L-P AU - Zhao LP FAU - Di, Z-H AU - Di ZH FAU - Mchepange, U O AU - Mchepange UO FAU - Zhang, L AU - Zhang L FAU - Chen, H-D AU - Chen HD FAU - Wei, H-C AU - Wei HC LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090601 PL - England TA - J Eur Acad Dermatol Venereol JT - Journal of the European Academy of Dermatology and Venereology : JEADV JID - 9216037 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (DNA Primers) SB - IM MH - Base Sequence MH - Brain-Derived Neurotrophic Factor/blood/*genetics MH - Case-Control Studies MH - China MH - DNA Primers MH - Dermatitis, Atopic/ethnology/*genetics MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Male MH - *Polymorphism, Genetic EDAT- 2009/06/16 09:00 MHDA- 2010/01/12 06:00 CRDT- 2009/06/16 09:00 PHST- 2009/06/16 09:00 [entrez] PHST- 2009/06/16 09:00 [pubmed] PHST- 2010/01/12 06:00 [medline] AID - JDV3308 [pii] AID - 10.1111/j.1468-3083.2009.03308.x [doi] PST - ppublish SO - J Eur Acad Dermatol Venereol. 2009 Nov;23(11):1277-81. doi: 10.1111/j.1468-3083.2009.03308.x. Epub 2009 Jun 1.