title: Genetic association between matrix metalloproteinase MMP-9 and MMP-3 polymorphisms and Japanese sporadic Alzheimer's disease.
abstract: Recent studies suggested that matrix metalloproteinases (MMPs) might play an important role in the pathophysiology of Alzheimer's disease (AD). MMP-9 and MMP-3 are reported to degrade amyloid beta and have several functional polymorphisms associated with other common diseases. Four common polymorphisms in each of MMP-9 and MMP-3 were examined in AD cases and normal control individuals. Common polymorphisms of MMP-9, rs3918248, rs2664538, rs2250889 and rs2274756 showed no association with risk for AD. We observed strong linkage disequilibrium (LD) between rs2664538 and rs2250889 in our Japanese samples. The polymorphisms of MMP-3; 5A/6A insertion polymorphism in the promoter, rs3025079, rs520540 and rs679620 also did not influence risk for AD. LD of the 5A/6A polymorphism with rs679620 was relatively strong. These results suggest that the common polymorphisms of MMP-9 and MMP-3 investigated here are not associated with AD.
authors.affiliation: Department of Psychiatry, Juntendo University School of Medicine. 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421 Japan. nobuto.shibata@nifty.ne.jp
authors.forename: Nobuto
authors.initials: N
authors.lastname: Shibata
authors.forename: Tohru
authors.initials: T
authors.lastname: Ohnuma
authors.forename: Shinji
authors.initials: S
authors.lastname: Higashi
authors.forename: Chie
authors.initials: C
authors.lastname: Usui
authors.forename: Taku
authors.initials: T
authors.lastname: Ohkubo
authors.forename: Akiyoshi
authors.initials: A
authors.lastname: Kitajima
authors.forename: Akira
authors.initials: A
authors.lastname: Ueki
authors.forename: Masatsugu
authors.initials: M
authors.lastname: Nagao
authors.forename: Heii
authors.initials: H
authors.lastname: Arai
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000235:genetics*; D016001:Confidence Intervals; D005260:Female; D005787:Gene Frequency / Q000502:physiology; D020022:Genetic Predisposition to Disease; D006801:Humans; D007564:Japan / Q000453:epidemiology; D015810:Linkage Disequilibrium; D008297:Male; D019278:Matrix Metalloproteinase 3 / Q000235:genetics*; D020780:Matrix Metalloproteinase 9 / Q000235:genetics*; D008875:Middle Aged; D016017:Odds Ratio; D011110:Polymorphism, Genetic; D011401:Promoter Regions, Genetic; D012333:RNA, Messenger / Q000096:biosynthesis; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000379:methods
chemical_list: D012333:RNA, Messenger; D019278:Matrix Metalloproteinase 3; D020780:Matrix Metalloproteinase 9