{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T03:20:13Z","timestamp":1761016813583},"reference-count":21,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1992,4]]},"abstract":"<jats:p content-type=\"fine-print\">\u2713 Vascular contraction is induced by the activation of intracellular contractile proteins mediated through signal transduction from the outside to the inside of cells. Protein kinase C plays a crucial role in this signal transduction. It is hypothesized that protein kinase C plays a causative part in the development of vasospasm after subarachnoid hemorrhage (SAH). To verify this directly, the authors measured protein kinase C activity in canine basilar arteries in an SAH model with (\u03b3-<jats:sup>32<\/jats:sup>P)adenosine triphosphate and the data were compared to those in a control group. Protein kinase C is translocated to the membrane from the cytosol when it is activated, and the translocation is an index of the activation; thus, protein kinase C activity was measured both in the cytosol and in the membrane fractions.<\/jats:p>\n<jats:p content-type=\"fine-print\">Protein kinase C activity in the membrane in the SAH model was remarkably enhanced compared to that in the control group. The percentage of membrane activity to the total was also significantly greater in the SAH vessels than in the control group, and the percentage of cytosol activity in the SAH group was decreased compared to that in the control arteries. The results indicate that protein kinase C in the vascular smooth muscle was translocated to the membrane from the cytosol and was activated when SAH occurred. It is concluded that this is direct evidence for a key role of protein kinase C in the development of vasospasm.<\/jats:p>","DOI":"10.3171\/jns.1992.76.4.0635","type":"journal-article","created":{"date-parts":[[2009,5,26]],"date-time":"2009-05-26T20:58:41Z","timestamp":1243371521000},"page":"635-639","source":"Crossref","is-referenced-by-count":68,"title":["Direct evidence for a key role of protein kinase C in the development of vasospasm after subarachnoid 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