title: Marked increases in concentrations of apolipoprotein in the cerebrospinal fluid of poliovirus-infected macaques: relations between apolipoprotein concentrations and severity of brain injury.
abstract: Apolipoproteins in cerebrospinal fluid (CSF) might have important functional roles in the pathophysiology of brain and lipid metabolism in the vascular component. The present study examined apolipoprotein A-I (apo-A-I) and apolipoprotein E (apo-E) levels in CSF and serum from poliovirus-infected macaques. Poliovirus-infected macaques developed motor deficits and were classified into three groups: (1) muscle weakness in one or both legs; (2) partial paralysis in one or both legs; (3) complete paralysis in one or both legs. No motor deficits were evident in the control or sham-treated macaques. Apo-A-I concentrations in CSF were markedly elevated in poliovirus-infected macaques with weakness, partial or complete paralysis, in comparison with either control or sham-treated animals, and were proportional to the severity of motor impairment. Apo-E concentrations in CSF were also significantly elevated in poliovirus-infected macaques with complete paralysis. The magnitude of increase in CSF apo-A-I or apo-E concentrations was also closely associated with the degree of histologic neurological damage and inflammation (lesion scores). However, no changes in serum apo-A-I and apo-E concentrations were observed in the poliovirus-infected macaques compared with control macaques. Furthermore there were no significant correlations apo-A-I or apo-E concentrations between serum and CSF. We hypothesize that the elevation of apo-A-I and apo-E concentrations after poliovirus infection is caused by immune stimulation within the central nervous system (CNS). Measures of CSF apo-A-I and apo-E levels might serve as a useful marker for the severity and/or the range of CNS injury.
authors.affiliation: Department of Laboratory Medicine, Gifu University School of Medicine, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Saito
authors.forename: M
authors.initials: M
authors.lastname: Seishima
authors.forename: M P
authors.initials: MP
authors.lastname: Heyes
authors.forename: H
authors.initials: H
authors.lastname: Song
authors.forename: S
authors.initials: S
authors.lastname: Fujigaki
authors.forename: S
authors.initials: S
authors.lastname: Maeda
authors.forename: J H
authors.initials: JH
authors.lastname: Vickers
authors.forename: A
authors.initials: A
authors.lastname: Noma
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D016632:Apolipoprotein A-I / Q000134:cerebrospinal fluid; D001053:Apolipoproteins / Q000134:cerebrospinal fluid*; D001057:Apolipoproteins E / Q000134:cerebrospinal fluid; D015153:Blotting, Western; D001930:Brain Injuries / Q000134:cerebrospinal fluid*; D008253:Macaca mulatta; D011051:Poliomyelitis / Q000134:cerebrospinal fluid*
chemical_list: D016632:Apolipoprotein A-I; D001053:Apolipoproteins; D001057:Apolipoproteins E