title: Expression of interleukin-1 beta in lipopolysaccharide stimulated monocytes derived from patients with aneurysmal subarachnoid hemorrhage is correlated with cerebral vasospasm.
abstract: Cerebral arterial vasospasm is a frequent complication after aneurysmal subarachnoid hemorrhage (SAH). Immunological activation may affect the development of vasospasm. This study measured the cytokines released from lipopolysaccharide-stimulated monocytes of SAH patients. We measured cerebral artery diameters before and after surgery for SAH. The activation index of interleukin-1 beta (IL-1 beta), but not tumor necrosis factor-alpha (TNF-alpha), was higher in patients with symptomatic vasospasm (5.6+/-1.7; n=11) than in patients without (1.8+/-0.4; n=11) (P=0.039). Furthermore, the IL-1 beta activation index was correlated with the degree of the postoperative angiographic vasospasm (correlation coefficient=-0.66, P=0.007). Individual variation in systemic immune activation, measured by monocyte-derived IL-1 beta expression levels after stimulation, may be associated with the development of vasospasm after aneurysmal SAH.
authors.affiliation: Department of Neurosurgery, Samsung Medical Center and Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, 50 Ilwon-Dong, Kangnam-Ku, Seoul 135-710, South Korea.
authors.forename: D H
authors.initials: DH
authors.lastname: Nam
authors.forename: J S
authors.initials: JS
authors.lastname: Kim
authors.forename: S C
authors.initials: SC
authors.lastname: Hong
authors.forename: W H
authors.initials: WH
authors.lastname: Lee
authors.forename: J I
authors.initials: JI
authors.lastname: Lee
authors.forename: H J
authors.initials: HJ
authors.lastname: Shin
authors.forename: K
authors.initials: K
authors.lastname: Park
authors.forename: W
authors.initials: W
authors.lastname: Eoh
authors.forename: D H
authors.initials: DH
authors.lastname: Han
authors.forename: J H
authors.initials: JH
authors.lastname: Kim
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000276:immunology* / Q000378:metabolism / Q000503:physiopathology; D005260:Female; D023261:Glasgow Outcome Scale; D006801:Humans; D007107:Immune System / Q000503:physiopathology; D007375:Interleukin-1 / Q000235:genetics / Q000378:metabolism*; D008070:Lipopolysaccharides / Q000494:pharmacology*; D008297:Male; D008875:Middle Aged; D009000:Monocytes / Q000187:drug effects / Q000378:metabolism*; D012333:RNA, Messenger / Q000378:metabolism; D013345:Subarachnoid Hemorrhage / Q000150:complications* / Q000503:physiopathology; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics / Q000378:metabolism; D020301:Vasospasm, Intracranial / Q000276:immunology* / Q000378:metabolism* / Q000503:physiopathology
chemical_list: D007375:Interleukin-1; D008070:Lipopolysaccharides; D012333:RNA, Messenger; D014409:Tumor Necrosis Factor-alpha