{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,18]],"date-time":"2026-05-18T17:31:10Z","timestamp":1779125470332,"version":"3.51.4"},"reference-count":66,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1975,12]]},"abstract":"<jats:p content-type=\"fine-print\">\u2713 Cerebral autoregulation and vasomotor responsiveness to carbon dioxide (CO<jats:sub>2<\/jats:sub>) were measured quantitatively by the use of the autoregulation index and chemical index, respectively, in normal baboons before and after intravertebral and intracarotid infusion of the anticholinesterase agent, neostigmine methylsulfate (Prostigmin). Continuous measurements were made of cerebral blood flow (measured as bilateral internal jugular venous outflow), arterial and cerebral venous pO<jats:sub>2<\/jats:sub> and pCO<jats:sub>2<\/jats:sub>, cerebral arteriovenous oxygen differences, and endotracheal CO<jats:sub>2<\/jats:sub>.<\/jats:p>\n<jats:p content-type=\"fine-print\">The effect of intravertebral infusion of neostigmine (12.5 \u00b5g\/kg body weight) was compared to intracarotid infusion of neostigmine (25 \u00b5g\/kg body weight) for assessment of any specific action of the drug on a hypothetical cholinergic vasomotor center, presumed to be located in the territory of the vertebrobasilar supply. No significant or persistent changes in cerebral blood flow (CBF) and cerebral metabolic rate for oxygen (CMRO<jats:sub>2<\/jats:sub>) followed either intravertebral or intracarotid infusion of neostigmine. Cerebral vascular resistance (CVR) and cerebral perfusion pressure (CPP), however, decreased significantly after intravertebral infusion. Cerebral autoregulatory vasoconstriction during increases of CPP was significantly reduced following both intravertebral and intracarotid infusion. Cerebral autoregulatory vasodilatation was not altered as CPP was lowered. Cerebral vasodilatory reactivity to CO<jats:sub>2<\/jats:sub> inhalation was significantly enhanced following intravertebral neostigmine but not following intracarotid neostigmine. Cerebral vasoconstrictive response to hyperventilation was not influenced by neostigmine. These results support the view that central cholinergic cerebrovascular influences exist, and are vasodilatory in nature.<\/jats:p>","DOI":"10.3171\/jns.1975.43.6.0689","type":"journal-article","created":{"date-parts":[[2009,5,7]],"date-time":"2009-05-07T15:02:40Z","timestamp":1241708560000},"page":"689-705","source":"Crossref","is-referenced-by-count":19,"title":["Central cholinergic control of cerebral blood flow in the baboon"],"prefix":"10.3171","volume":"43","author":[{"given":"Minoru","family":"Aoyagi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John Stirling","family":"Meyer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vinod D.","family":"Deshmukh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erwin O.","family":"Ott","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yukio","family":"Tagashira","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasuo","family":"Kawamura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masayuki","family":"Matsuda","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amrit N.","family":"Achari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anthony N. 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