title: [Investigation of single nucleotide polymorphisms in the promoter region of mannan-binding lectin gene in a Han population from Guangdong].
abstract: OBJECTIVE
  To investigate the single nucleotide polymorphisms (SNP) in the promoter region of mannan-binding lectin (MBL) gene in a Han population in Guangdong Province.
  
  
  METHODS
  A total of 167 blood samples were obtained from this Han population to isolate the genomic DNA from the leucocytes. The polymorphism alleles -550(G/C, named H/L alleles), -220(G/C, X/Y alleles) and +4(C/Tr, P/Q alleles) in the promoter region of MBL gene were detected by PCR with sequence-specific primers and molecular beacon real-time fluorescent PCR, and the frequencies of haplotypes and genotypes were analyzed.
  
  
  RESULTS
  The frequencies of several genotypes in the 167 samples were: LYP/LYP, 10(5.9%); HYP/LYQ, 7(4.2%); LYP/LYQ, 94(56.3%); LXP/LXP, 6(3.6%); LYQ/LYQ, 4(2.4%); LXP/LYQ, 29(17.4%); HYP/LYP, 3(1.8%); HYP/LXP, 2(1.2%); HYP/HYP, 12(7.2%).
  
  
  CONCLUSIONS
  The polymorphism genotypes in the promoter region of MBL gene in this chosen population are mostly LYP/LYQ and LXP/LYQ.
authors.affiliation: Department of Immunology, First Military Medical University, Guangzhou, China. lvcwcn@yahoo.com.cn
authors.forename: Cheng-wei
authors.initials: CW
authors.lastname: Lü
authors.forename: Zheng-liang
authors.initials: ZL
authors.lastname: Chen
authors.forename: Zhi-hong
authors.initials: ZH
authors.lastname: Diao
authors.forename: Fang-yong
authors.initials: FY
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D002681:China / Q000208:ethnology; D005260:Female; D006801:Humans; D008297:Male; D037601:Mannose-Binding Lectin / Q000235:genetics*; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide; D011401:Promoter Regions, Genetic
chemical_list: D037601:Mannose-Binding Lectin