{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T13:24:55Z","timestamp":1791120295551,"version":"4.1.0"},"reference-count":45,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2005,7]]},"abstract":"<jats:sec id=\"S1\">\n<jats:title><jats:italic>Object<\/jats:italic><\/jats:title>\n<jats:p>The authors evaluated the neuroprotective and angiogenic effects of a continuous and low-dose infusion of vascular endothelial growth factor (VEGF)-165 on cerebral ischemia in rats.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"S2\">\n<jats:title><jats:italic>Methods<\/jats:italic><\/jats:title>\n<jats:p>The authors introduced VEGF complementary (c)DNA into baby hamster kidney (BHK) cells and established a cell line that produces human VEGF<jats:sub>165<\/jats:sub> (BHK-VEGF). The BHK-VEGF cells and BHK cells that had been transfected with an expression vector that did not contain human VEGF<jats:sub>165<\/jats:sub> cDNA (BHK-control) were encapsulated. Both capsules were implanted into rat striata. Six days after capsule implantation, the right middle cerebral artery (MCA) was occluded. Some animals were killed 24 hours after occlusion to measure the volume of the resulting infarct and to perform immunohistochemical studies. Other animals were used for subsequent behavioral studies 1, 7, and 14 days after MCA occlusion.<\/jats:p>\n<jats:p>The encapsulated BHK-VEGF cell grafts significantly reduced the volume of the infarct and the number of apoptotic cells in the penumbral area when compared with the effect of the BHK-control cell capsule. In addition, angiogenesis and gliogenesis significantly increased in the region around the capsule in animals that received BHK-VEGF cell capsules without an increase in focal cerebral blood flow; this did not occur in animals that received the BHK-control cell capsule. In behavioral studies rats that received the BHK-VEGF cell capsule displayed significant recovery while participating in the accelerating rotarod test after stroke.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"S3\">\n<jats:title><jats:italic>Conclusions<\/jats:italic><\/jats:title>\n<jats:p>Continuous intracerebral administration of low-dose VEGF<jats:sub>165<\/jats:sub> through encapsulated grafts of VEGF-producing cells produces neuroprotective and angiogenic effects. 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