Eicosapentaenoic Acid Cerebral Vasospasm Therapy Study
Maneno muhimu
Kikemikali
Maelezo
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.
Tarehe
Imethibitishwa Mwisho: | 08/31/2009 |
Iliyowasilishwa Kwanza: | 02/03/2009 |
Uandikishaji uliokadiriwa Uliwasilishwa: | 02/05/2009 |
Iliyotumwa Kwanza: | 02/08/2009 |
Sasisho la Mwisho Liliwasilishwa: | 08/31/2009 |
Sasisho la Mwisho Lilichapishwa: | 09/02/2009 |
Tarehe halisi ya kuanza kwa masomo: | 11/30/2004 |
Tarehe ya Kukamilisha Msingi iliyokadiriwa: | 05/31/2008 |
Tarehe ya Kukamilisha Utafiti: | 11/30/2008 |
Hali au ugonjwa
Uingiliaji / matibabu
Drug: A
Awamu
Vikundi vya Arm
Mkono | Uingiliaji / matibabu |
---|---|
Experimental: A Patients in the group A are orally administered eicosapentaenoic acid ethyl ester. | Drug: A Orally administered 900 mg eicosapentaenoic acid ethyl ester three times a day (2700 mg ⁄ day) from the surgery next day to 30 days after the onset of SAH. |
No Intervention: B Patients in the group B (control) are not administered eicosapentaenoic acid ethyl ester. |
Vigezo vya Kustahiki
Zama zinazostahiki Kujifunza | 20 Years Kwa 20 Years |
Jinsia Inastahiki Kujifunza | All |
Hupokea Wajitolea wa Afya | Ndio |
Vigezo | 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 |
Matokeo
Hatua za Matokeo ya Msingi
1. Cerebral vasospasms: Symptomatic vasospasm defined as documented arterial vasospasm consistent with new neurological deterioration. New low-density areas on CT scans associated with vasospasm. [Between 4 and 30 days after the onset of SAH]
Hatua za Matokeo ya Sekondari
1. Patient's Glasgow Outcome Scale (GOS). [At 1 month after onset of SAH.]