title: Evaluation of plasma endothelin-1 levels in patients with cerebral infarction.
abstract: Endothelin-1 (ET-1) is a vasoconstrictor peptide derived from endothelium. Many authors have shown that ischemic stroke is associated with elevated plasma ET-1 levels. Also, the present findings related to plasma ET-1 levels with clinical status, size of the infarction, location of the infarction, and prognosis of the cerebral infarction were contradictory. In this study, plasma ET-1 levels in 30 patients with cerebral infarction within 72 hours after the onset of focal neurologic deficit and at their seventh day postinfarction were measured by a microplate enzyme immunoassay. Thirty sex- and age-matched healthy subjects were accepted as a control group. The mean plasma ET-1 concentrations in patients on admission, in patients at day 7, and in control subjects were 1.93 +/- 1.79, 1.03 +/- 1.02, and 0.65 +/- 0.32 fmol/mL, respectively. The mean plasma ET-1 level of patients on admission was found to be significantly higher than in patients at day 7 and in control subjects (p < 0.05). No significant difference in ET-1 levels was observed between the patients at day 7 and control subjects. Furthermore, there was no correlation between plasma ET-1 concentration and size of infarction, location of infarction, degree of clinical neurologic deficit, or prognosis of cerebral infarction. It was concluded that plasma ET-1 levels shortly after ischemic stroke were increased, which may be associated with the acute-phase reaction of cerebral infarction and may have deleterious effects on development of neuronal injury.
authors.affiliation: Department of Neurology, Karadeniz Technical University Medical School, Trabzon, Turkey. aorem64@yahoo.com
authors.forename: Zekeriya
authors.initials: Z
authors.lastname: Alioğlu
authors.forename: Asim
authors.initials: A
authors.lastname: Orem
authors.forename: Ismail
authors.initials: I
authors.lastname: Bülbül
authors.forename: Cavit
authors.initials: C
authors.lastname: Boz
authors.forename: Mehmet
authors.initials: M
authors.lastname: Ozmenoğlu
authors.forename: Birgül
authors.initials: B
authors.lastname: Vanizor
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002544:Cerebral Infarction / Q000097:blood* / Q000150:complications* / Q000000981:diagnostic imaging; D019332:Endothelin-1 / Q000097:blood*; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D009422:Nervous System Diseases / Q000097:blood* / Q000000981:diagnostic imaging / Q000209:etiology*; D009504:Neutrophils; D011379:Prognosis; D013997:Time Factors; D014057:Tomography, X-Ray Computed
chemical_list: D019332:Endothelin-1