Clinical trial NCT00839449: Eicosapentaenoic Acid Cerebral Vasospasm Therapy Study
Official title: Eicosapentaenoic Acid Cerebral Vasospasm Therapy Study (EVAS): Effect of Eicosapentaenoic Acid on Cerebral Vasospasm Following Subarachnoid Hemorrhage
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Subarachnoid Hemorrhage
Cerebral Vasospasm
Keywords: subarachnoid hemorrhage
cerebral vasospasm
eicosapentaenoic acid
Lead sponsor: Yamaguchi University Hospital
Sponsor class: OTHER
Collaborators: name: Nakamura Memorial Hospital
name: Iwate Medical University
name: Tohoku University
name: Ootemachi Hospital
First posted: 2009-02-09
Enrollment: 200
Sex: ALL
Minimum age (years): 20
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: Cerebral vasospasm following subarachnoid hemorrhage (SAH) is the most common cause of morbidity and mortality. Recent studies indicate that Rho-kinase play an important role in the occurrence of such cerebral vasospasm. Eicosapentaenoic acid (EPA) inhibits sphingosylphosphorylcholine (SPC)-induced Rho-kinase activation in vitro. So this study examines whether EPA prevents cerebral vasospasm occurrence after SAH in patients.

Detailed description: Cerebral vasospasm occasionally seen after subarachnoid hemorrhage (SAH) due to a ruptured intracranial aneurysm is the most common cause of morbidity and mortality in these cases. Recent studies indicate that Rho-kinase plays an important role in such cerebral vasospasm and that numerous agents, such as thromboxane A2 (TXA2), sphingosylphosphorylcholine (SPC) and arachidonic acid (AA), can activate Rho-kinase directly or through receptors in the cell membrane; among these agents, SPC has been described as a novel messenger for Rho-kinase-mediated Ca2+ sensitization of vascular smooth muscle contraction. Eicosapentaenoic acid (EPA) has recently been reported to inhibit SPC-induced Rho-kinase activation in vitro, and thereby vascular smooth muscle contraction, through the inhibition of Src family protein tyrosine kinases translocation. Moreover, the concentration of AA increases in the cerebrospinal fluid of patients with SAH, suggesting that this substance has a potential role in the occurrence of cerebral vasospasm following SAH, while EPA is known to change the constitution ratios of AA and EPA in cell membrane phospholipid, resulting in the inhibition of TXA2 synthesis. These observations lead us to hypothesize that EPA may inhibit cerebral vasospasm following SAH through the inhibition of Rho-kinase activation.

Eligibility criteria: Inclusion Criteria:

* Subarachnoid hemorrhage (SAH)
* The ruptured cerebral aneurysms conformed by cerebral angiography
* The patients with treated by craniotomy and clip application within 72h after the onset of SAH

Exclusion Criteria:

* Traumatic or mycotic aneurysms
* A history or complication of serious stroke
* Moya Moya disease
* A history of SAH
* Complication of serious heart or hepatic disease or infection or renal failure
* Malignant tumor
* Patients judged to be inappropriate by physician in charge

Primary outcomes:
measure: Cerebral vasospasms: Symptomatic vasospasm defined as documented arterial vasospasm consistent with new neurological deterioration. New low-density areas on CT scans associated with vasospasm.
timeFrame: Between 4 and 30 days after the onset of SAH
Secondary outcomes:
measure: Patient's Glasgow Outcome Scale (GOS).
timeFrame: At 1 month after onset of SAH.
Other outcomes:
Locations:
city: Kitakyushu
country: Japan
facility: Ootemachi Hospital
state: Fukuoka
city: Sapporo
country: Japan
facility: Nakamura Memorial Hospital
state: Hokkaido
city: Morioka
country: Japan
facility: Iwate Medical University
state: Iwate
city: Sendai
country: Japan
facility: Tohoku University
state: Miyagi
city: Ube
country: Japan
facility: Yamaguchi University Hospital
state: Yamaguchi
Study officials:
affiliation: Yamaguchi University Hospital
name: Michiyasu Suzuki, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Yoneda H, Shirao S, Nakagawara J, Ogasawara K, Tominaga T, Suzuki M. A prospective, multicenter, randomized study of the efficacy of eicosapentaenoic acid for cerebral vasospasm: the EVAS study. World Neurosurg. 2014 Feb;81(2):309-15. doi: 10.1016/j.wneu.2012.09.020. Epub 2012 Sep 29.