title: Platelet-activating factor (PAF) and the development of chronic subdural haematoma.
abstract: Platelet activating factor (PAF) content and PAF-acetylhydrolase (PAFAH) activity were measured in the plasma and haematoma of 34 chronic subdural haematoma (CSH) patients. The plasma PAF level in patients with CSH was higher than that in healthy controls. Although there was no correlation between the plasma PAF levels and the interval between the onset of symptoms and the day of sampling, namely, the interval after bleeding, the haematoma PAF level gradually decreased according to the interval after the onset of symptoms. There was no difference between plasma PAFAH activity in patients with CSH and that in healthy controls, and haematoma enzyme activity gradually increased correlated with the interval between the onset of symptoms and surgery. In addition, the localization of PAF in haematoma capsules was histochemically determined. PAF was solely localized to the peri-sinusoidal vessels in the outer membrane of haematoma capsules. Based on these biochemical and histochemical studies, we speculated that PAF may play a role in the development of chronic subdural haematomas.
authors.affiliation: Department of Neurosurgery, Toyama Medical and Pharmaceutical University, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hirasima
authors.forename: S
authors.initials: S
authors.lastname: Endo
authors.forename: R
authors.initials: R
authors.lastname: Kato
authors.forename: T
authors.initials: T
authors.lastname: Ohmori
authors.forename: T
authors.initials: T
authors.lastname: Nagahori
authors.forename: M
authors.initials: M
authors.lastname: Nishijima
authors.forename: K
authors.initials: K
authors.lastname: Karasawa
authors.forename: S
authors.initials: S
authors.lastname: Nojima
authors.forename: A
authors.initials: A
authors.lastname: Takaku
mesh_terms: D043203:1-Alkyl-2-acetylglycerophosphocholine Esterase; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D005260:Female; D005455:Fluorescent Antibody Technique; D006408:Hematoma, Subdural / Q000201:enzymology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D010741:Phospholipases A / Q000097:blood*; D010972:Platelet Activating Factor / Q000378:metabolism*
chemical_list: D010972:Platelet Activating Factor; D010741:Phospholipases A; D043203:1-Alkyl-2-acetylglycerophosphocholine Esterase