title: Association between chronic Helicobacter pylori infection and acute ischemic stroke: Fukuoka Harasanshin Atherosclerosis Trial (FHAT).
abstract: Helicobacter pylori (H. pylori) have been associated both epidemiologically and pathogenetically with coronary atherosclerosis, but data on the relationship between chronic H. pylori infection and stroke are lacking. Therefore, we investigated the relationship between H. pylori infection and acute ischemic stroke in 62 patients with their first stroke and 143 controls. The stroke patients were all admitted to Harasanshin General Hospital (Fukuoka, Japan) and the controls were asymptomatic age-matched outpatients with hyperlipidemia who did not have cardiac disease or infections. All patients underwent cranial CT scanning and/or brain magnetic resonance imaging, duplex ultrasonography of the extracranial carotid arteries, and transthoracic echocardiography. H. pylori infection was diagnosed by detection of anti-H. pylori IgG antibodies, the 13C-urea breath test, and histology. Conditional logistic regression analysis was performed to analyze the data. The 62 stroke patients and 143 controls were aged from 41 to 92 years. Chronic H. pylori infection was associated with a higher risk of stroke due to small artery occlusion (odds ratio: 9.68; 95% CI: 3.56-33.08, P <0.001) and a lower risk of cardioembolic stroke (odds ratio: 0.27; 95% CI: 0.03-1.53). Chronic H. pylori infection still showed an overall association with ischemic stroke (odds ratio for all subtypes combined: 2.57; 95% CI: 1.09-6.08) after adjusting for major cardiovascular risk factors. These results suggest that chronic H. pylori infection may be a triggering factor that increases the risk of acute ischemic stroke.
authors.affiliation: Division of General Medicine, Harasanshin General Hospital 1-8, Taihaku-cho, Hakata-ku, Fukuoka 812-0033, Japan. genmedpr@hrasanshin.or.jp
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Sawayama
authors.forename: Iwao
authors.initials: I
authors.lastname: Ariyama
authors.forename: Maki
authors.initials: M
authors.lastname: Hamada
authors.forename: Shigeru
authors.initials: S
authors.lastname: Otaguro
authors.forename: Takao
authors.initials: T
authors.lastname: Machi
authors.forename: Yuji
authors.initials: Y
authors.lastname: Taira
authors.forename: Jun
authors.initials: J
authors.lastname: Hayashi
mesh_terms: D000368:Aged; D000907:Antibodies, Bacterial / Q000032:analysis; D002545:Brain Ischemia / Q000209:etiology* / Q000382:microbiology*; D016022:Case-Control Studies; D002908:Chronic Disease; D003324:Coronary Artery Disease / Q000150:complications* / Q000209:etiology / Q000382:microbiology*; D005260:Female; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori / Q000472:pathogenicity*; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D012307:Risk Factors; D020521:Stroke / Q000209:etiology* / Q000382:microbiology*; D014057:Tomography, X-Ray Computed
chemical_list: D000907:Antibodies, Bacterial; D007074:Immunoglobulin G