title: Association of matrix metalloproteinase-1 promoter polymorphism with generalized aggressive periodontitis in a Chinese population.
abstract: BACKGROUND
  A single nucleotide polymorphism in the promoter region of -1607 bp of the human matrix metalloproteinase-1 (MMP-1) gene has been found to be associated with an increased risk of various inflammatory diseases and cancer metastasis.
  
  
  OBJECTIVE
  The present study aimed to examine the distribution of MMP-1 genotypes in a group of Chinese subjects with generalized aggressive periodontitis and a group of periodontally healthy subjects, and to evaluate the possible association of the MMP-1 promoter polymorphism with aggressive periodontitis.
  
  
  METHODS
  Genomic DNA was obtained from whole blood samples in 40 Chinese subjects with generalized aggressive periodontitis and 52 periodontally healthy subjects as controls. MMP-1 promoter fragment was amplified by polymerase chain reaction, and the polymorphisms were analyzed by restriction endonuclease cleavage. The alleles were detected by polyacrylamide gel electrophoresis and visualized with ethidium bromide.
  
  
  RESULTS
  The detection frequency of 2G allele was significantly higher in the subjects with generalized aggressive periodontitis (68.7%) than in the control subjects (49%) (p < 0.01). The genotype of 2G/2G was found in 52.5% of the patients, which was significantly greater than that of control subjects (23.1%) (p < 0.05).
  
  
  CONCLUSIONS
  The present study suggests that a single nucleotide polymorphism in the MMP-1 promoter region of -1607 bp may be associated with generalized aggressive periodontitis in Chinese population.
authors.affiliation: Department of Periodontology, School of Stomatology, Wuhan University, Wuhan, China.
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Cao
authors.forename: Chengzhang
authors.initials: C
authors.lastname: Li
authors.forename: Lijian
authors.initials: L
authors.lastname: Jin
authors.forename: Esmonde F
authors.initials: EF
authors.lastname: Corbet
mesh_terms: D000328:Adult; D000483:Alleles; D020029:Base Pairing / Q000235:genetics; D002681:China; D004247:DNA / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D005784:Gene Amplification; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D020781:Matrix Metalloproteinase 1 / Q000235:genetics*; D010518:Periodontitis / Q000201:enzymology*; D016133:Polymerase Chain Reaction; D012150:Polymorphism, Restriction Fragment Length; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics*
chemical_list: D004247:DNA; D020781:Matrix Metalloproteinase 1