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(Stroke. 2001;32:2198.)
© 2001 American Heart Association, Inc.

Original Contributions

Polymorphisms in Matrix Metalloproteinase-1, -3, -9, and -12 Genes in Relation to Subarachnoid Hemorrhage

Baiping Zhang, MB, MD, DPhil; Sahar Dhillon, MSc; Irene Geary, RGN; W. Martin Howell, PhD, MRCPath; Fausto Iannotti, MD, FRCS(SN); Ian N.M. Day, MB, BChir, PhD, FRCPath Shu Ye, MB, MD, PhD

From the Human Genetics Research Division (B.Z., S.D., W.M.H., I.N., S.Y.) and Clinical Neurosciences Research Division (I.G., F.I.), University of Southampton, School of Medicine (UK).

Correspondence to Dr Shu Ye, Human Genetics, Duthie Building (Mailpoint 808), Southampton General Hospital, Tremona Rd, Southampton SO16 6YD, UK. E-mailShu.Ye{at}soton.ac.uk

Background and Purpose—— 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.

Key Words: aneurysm, intracranial • matrix metalloproteinases • microsatellite repeats • polymorphism (genetics) • subarachnoid hemorrhage

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