{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T21:30:07Z","timestamp":1787002207832,"version":"build-2736575974"},"reference-count":53,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[1987,2,1]],"date-time":"1987-02-01T00:00:00Z","timestamp":539136000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Cereb Blood Flow Metab"],"published-print":{"date-parts":[[1987,2]]},"abstract":"<jats:p>\n                    Intracisternal injection of blood in the rat induces an angiographically demonstrable, biphasic cerebral vasospasm of the vertebrobasilar system, with a maximal acute spasm at 10 min and a maximal late spasm at 2 days after the subarachnoid hemorrhage (SAH). Selective lesioning of the A\n                    <jats:sub>1<\/jats:sub>\n                    nuclei in the medulla oblongata prior to the SAH prevents the development of the late spasm, but the acute spasm develops to the same extent as in sham-lesioned animals. Lesions of the medullary A\n                    <jats:sub>2<\/jats:sub>\n                    nuclei not only prevent the development of both acute and late spasm, but give rise to a dilatation of the vertebrobasilar arteries at day 2 post-SAH. The study indicates that both the A\n                    <jats:sub>1<\/jats:sub>\n                    and A\n                    <jats:sub>2<\/jats:sub>\n                    nuclei participate in the development of vasospasm post-SAH. The contrasting patterns of spasm after A\n                    <jats:sub>1<\/jats:sub>\n                    and A\n                    <jats:sub>2<\/jats:sub>\n                    lesions suggest a different mechanism for acute and late spasm.\n                  <\/jats:p>","DOI":"10.1038\/jcbfm.1987.4","type":"journal-article","created":{"date-parts":[[2011,4,8]],"date-time":"2011-04-08T00:44:28Z","timestamp":1302223468000},"page":"21-28","source":"Crossref","is-referenced-by-count":33,"title":["Effect of Selective Lesions of Medullary Catecholamine Nuclei on Experimental Cerebral Vasospasm in the Rat"],"prefix":"10.1177","volume":"7","author":[{"given":"N. Aa.","family":"Svendgaard","sequence":"first","affiliation":[{"name":"Department of Neurosurgery, University Hospital, Lund, Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. 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