title: Polymorphisms in matrix metalloproteinase-1, -3, -9, and -12 genes in relation to subarachnoid hemorrhage.
abstract: OBJECTIVE
  Intracranial aneurysm, which underlies the vast majority of subarachnoid hemorrhage incidences, has a multifactorial etiology, and the importance of genetic factors is increasingly recognized. Development and rupture of intracranial aneurysms involve degradation and remodeling of the vascular wall matrix in which the matrix metalloproteinases (MMPs) play an important role. The possible impact of MMP gene polymorphisms on susceptibility to intracranial aneurysms is still controversial, with conflicting data from different reported studies.
  
  
  METHODS
  In this study we analyzed 5 different functional promoter polymorphisms in the MMP-1, MMP-3, MMP-9, and MMP-12 genes in a sample of 92 patients with aneurysmal subarachnoid hemorrhage and 158 healthy control subjects, all from southern England.
  
  
  RESULTS
  No significant difference was detected between the patient and control groups in genotype distribution of any of the polymorphisms studied.
  
  
  CONCLUSIONS
  The data do not support the hypothesis that MMP gene variations influence the development of intracranial aneurysms in the population studied.
authors.affiliation: Human Genetics Research Division, Clinical Neurosciences Research Division, University of Southampton, School of Medicine, UK.
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: S
authors.initials: S
authors.lastname: Dhillon
authors.forename: I
authors.initials: I
authors.lastname: Geary
authors.forename: W M
authors.initials: WM
authors.lastname: Howell
authors.forename: F
authors.initials: F
authors.lastname: Iannotti
authors.forename: I N
authors.initials: IN
authors.lastname: Day
authors.forename: S
authors.initials: S
authors.lastname: Ye
mesh_terms: D000328:Adult; D000368:Aged; D000483:Alleles; D015331:Cohort Studies; D004739:England / Q000453:epidemiology; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D020781:Matrix Metalloproteinase 1 / Q000235:genetics; D053508:Matrix Metalloproteinase 12; D019278:Matrix Metalloproteinase 3 / Q000235:genetics; D020780:Matrix Metalloproteinase 9 / Q000235:genetics; D020782:Matrix Metalloproteinases / Q000235:genetics*; D008666:Metalloendopeptidases / Q000235:genetics; D018895:Microsatellite Repeats; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011401:Promoter Regions, Genetic; D013345:Subarachnoid Hemorrhage / Q000453:epidemiology / Q000235:genetics*; D044465:White People / Q000235:genetics
chemical_list: D020782:Matrix Metalloproteinases; D008666:Metalloendopeptidases; D019278:Matrix Metalloproteinase 3; D020780:Matrix Metalloproteinase 9; C507122:MMP12 protein, human; D053508:Matrix Metalloproteinase 12; D020781:Matrix Metalloproteinase 1