title: Ventricular cerebrospinal fluid and serum concentrations of sTNFR-I, IL-1ra, and IL-6 after aneurysmal subarachnoid hemorrhage.
abstract: Postsubarachnoid hemorrhage, systemic inflammatory response syndrome and associated organ system failure are more frequently found in patients in poor neurologic condition. Since subarachnoid hemorrhage causes a profound intrathecal inflammatory response with production of proinflammatory cytokines TNFalpha, IL-1beta, and IL-6, a possible explanation for this association is that brain-derived cytokines may enter the systemic circulation in the presence of postsubarachnoid hemorrhage blood brain barrier disruption to systemically activate inflammatory cascades and thereby contribute to the development of postsubarachnoid hemorrhage systemic inflammatory response syndrome and extracerebral organ system failures. In 44 patients with aneurysmal subarachnoid hemorrhage admitted within 3 days of the initial bleed, extracerebral organ system functions were assessed individually and in aggregate using the modified Multiple Organ Dysfunction Score. Serum and cerebrospinal fluid concentrations of soluble tumor necrosis factor-alpha receptor-I, interleukin-1beta receptor antagonist, and IL-6 were determined during the first 2 weeks after subarachnoid hemorrhage and tested for correlation with (1) admission Hunt-Hess grade, (2) development of systemic inflammatory response syndrome and extracerebral organ system failures, and (3) neurologic outcome. The development of postsubarachnoid hemorrhage systemic inflammatory response syndrome and extracerebral organ system failures was paralleled by a significant increase in serum but not in cerebrospinal fluid levels of soluble tumor necrosis factor-alpha receptor-I and IL-1ra, that is, patients with and without extracerebral organ system failures did not differ in pattern and time course of cerebrospinal fluid cytokine concentrations. In contrast, increasing soluble tumor necrosis factor-alpha receptor-I and interleukin-1beta receptor antagonist serum levels correlated with a higher Multiple Organ Dysfunction score and with individual organ system dysfunctions. Postsubarachnoid hemorrhage, systemic inflammatory response syndrome and extracerebral organ system failures could therefore not be linked to changes in cerebrospinal fluid cytokine concentration profiles.
authors.affiliation: Department of Neurosurgery, University of Vienna, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Gruber
authors.forename: K
authors.initials: K
authors.lastname: Rössler
authors.forename: W
authors.initials: W
authors.lastname: Graninger
authors.forename: A
authors.initials: A
authors.lastname: Donner
authors.forename: M U
authors.initials: MU
authors.lastname: Illievich
authors.forename: T
authors.initials: T
authors.lastname: Czech
mesh_terms: D000328:Adult; D000368:Aged; D015703:Antigens, CD / Q000032:analysis*; D005260:Female; D006801:Humans; D053590:Interleukin 1 Receptor Antagonist Protein; D015850:Interleukin-6 / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D009102:Multiple Organ Failure / Q000097:blood / Q000134:cerebrospinal fluid; D018124:Receptors, Tumor Necrosis Factor / Q000032:analysis*; D047888:Receptors, Tumor Necrosis Factor, Type I; D012795:Sialoglycoproteins / Q000032:analysis*; D013345:Subarachnoid Hemorrhage / Q000097:blood / Q000134:cerebrospinal fluid*; D018746:Systemic Inflammatory Response Syndrome / Q000097:blood / Q000134:cerebrospinal fluid
chemical_list: D015703:Antigens, CD; C507763:IL1RN protein, human; D053590:Interleukin 1 Receptor Antagonist Protein; D015850:Interleukin-6; D018124:Receptors, Tumor Necrosis Factor; D047888:Receptors, Tumor Necrosis Factor, Type I; D012795:Sialoglycoproteins