Oxidative stress and increased formation of vasoconstricting F2-isoprostanes in patients with reversible cerebral vasoconstriction syndrome

Shih Pin Chen, Yu Ting Chung, Tsung Yun Liu, Yen Feng Wang, Jong Ling Fuh*, Shuu Jiun Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The pathophysiology of reversible cerebral vasoconstriction syndrome (RCVS) is unknown. Oxidative stress is detrimental to endothelial function and vascular reactivity. We hypothesized that the oxidative stress marker 8-iso-prostaglandin F, which is also a potent vasoconstrictor, might contribute to the pathogenesis of RCVS. Recruited participants included 103 RCVS patients, 53 patients with primary headache with acute severe attacks, and 54 healthy controls. Subjects recruited prior to 2009 were discovery cohort, whereas those after 2009, replication cohort. Urine samples were obtained from all patients at registration and from 79 patients with RCVS again at remission stage. Urine 8-iso-prostaglandin F was analyzed by liquid chromatography-tandem mass spectrometry. Patients with RCVS received magnetic resonance angiography and transcranial color-coded sonography. In RCVS patients, the urine 8-iso-prostaglandin F level was higher than that in the other groups in discovery, replication, and combined cohorts (RCVS, 0.29±0.18; primary headache with acute severe attacks, 0.21±0.19; control, 0.18±0.09 ng/mg creatinine; P<0.001), and it was positively correlated with the flow velocities of major intracranial arteries, especially within the first week of disease onset (middle cerebral artery, Spearman's correlation coefficient [rs]=0.580, P=0.002; anterior cerebral artery, r s=0.472, P=0.042; posterior cerebral artery, rs=0.457, P=0.022; basilar artery, rs= 0.530, P=0.002). The 8-iso-prostaglandin F level decreased from the ictalto remission stage in RCVS patients (0.31±0.21 vs 0.16±0.10 ng/mg creatinine, P<0.001). 8-Iso-prostaglandin F was higher in patients with RCVS and correlated with the severity of vasoconstrictions. Further studies are required to explore its potential pathogenic role.

Original languageEnglish
Pages (from-to)243-248
Number of pages6
JournalFree Radical Biology and Medicine
Volume61
DOIs
StatePublished - 2013

Keywords

  • 8-Iso-prostaglandin F
  • Endothelial dysfunction
  • Oxidative stress
  • Reversible cerebral vasoconstriction syndrome
  • Thunderclap headaches

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