{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T21:27:14Z","timestamp":1791322034855,"version":"4.3.1"},"reference-count":36,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2009,1,30]],"date-time":"2009-01-30T00:00:00Z","timestamp":1233273600000},"content-version":"vor","delay-in-days":3317,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["bpspubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["British J Pharmacology"],"published-print":{"date-parts":[[2000,1]]},"abstract":"<jats:p>\n<jats:list list-type=\"explicit-label\">\n<jats:list-item><jats:p>The main purpose of the study was to clarify to which extent nitric oxide (NO) contributes to acetylcholine (ACh) induced relaxation of human subcutaneous small arteries.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Arterial segments were mounted in myographs for recording of isometric tension, NO concentration and smooth muscle membrane potential.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>In noradrenaline\u2010contracted arteries, ACh induced endothelium\u2010dependent relaxations. The NO synthase inhibitor, <jats:italic>N<\/jats:italic><jats:sup>G<\/jats:sup>\u2010nitro\u2010<jats:sc>L<\/jats:sc>\u2010arginine (<jats:sc>L<\/jats:sc>\u2010NOARG) had a small significant effect on the concentration\u2010response curves for ACh, and in the presence of <jats:sc>L<\/jats:sc>\u2010NOARG, indomethacin only caused a small additional rightward shift in the ACh relaxation.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>The NO scavenger, oxyhaemoglobin attenuated relaxations for ACh and for the NO donor S\u2010nitroso\u2010N\u2010acetylpenicillamine (SNAP). Inhibition of guanylyl cyclase with 1H\u2010[1,2,4]oxadiazolo[4,3\u2010a]quinoxaline\u20101\u2010one (ODQ), and inhibition of protein kinase G with \u03b2\u2010phenyl\u20101, N2\u2010etheno\u20108\u2010bromoguanosine\u2010 3\u2032, 5\u2032\u2010 cyclic monophosphorothioate, Rp\u2010isomer, slightly attenuated ACh relaxation, but abolished SNAP induced relaxation.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>ACh induced relaxation without increases in the free NO concentration. In contrast, for equivalent relaxation, SNAP increased the NO concentration 32\u00b18\u2003n<jats:sc>M<\/jats:sc>.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>ACh hyperpolarized the arterial smooth muscle cells with 11.4\u00b11.3\u2003mV and 10.5\u00b11.3\u2003mV in the absence and presence of <jats:sc>L<\/jats:sc>\u2010NOARG, respectively. SNAP only elicited a hyperpolarization of 1.6\u00b10.9 mV.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>In the presence of indomethacin and <jats:sc>L<\/jats:sc>\u2010NOARG, ACh relaxation was almost unaffected by lipoxygenase inhibition with nordihydroguaiaretic acid, or cytochrome P450 inhibition with 17\u2010octadecynoic acid or econazole. ACh relaxation was strongly reduced by the combination of charybdotoxin and apamin, but small increments in the extracellular potassium concentration induced no relaxations.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>The study demonstrates that the NO\/<jats:sc>L<\/jats:sc>\u2010arginine pathway is present in human subcutaneous small arteries and to a limited extent is involved in ACh induced relaxation. The study also suggests a small contribution of arachidonic acid metabolites. However, ACh relaxation is mainly dependent on a non\u2010NO, non\u2010prostanoid endothelium dependent hyperpolarization.<\/jats:p><\/jats:list-item>\n<\/jats:list>\n<\/jats:p><jats:p><jats:italic>British Journal of Pharmacology<\/jats:italic> (2000) <jats:bold>129<\/jats:bold>, 184\u2013192; doi:<jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"doi\" xlink:href=\"10.1038\/sj.bjp.0703041\">10.1038\/sj.bjp.0703041<\/jats:ext-link><\/jats:p>","DOI":"10.1038\/sj.bjp.0703041","type":"journal-article","created":{"date-parts":[[2005,1,28]],"date-time":"2005-01-28T20:34:06Z","timestamp":1106944446000},"page":"184-192","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":80,"title":["Nitric oxide, prostanoid and non\u2010NO, non\u2010prostanoid involvement in acetylcholine relaxation of isolated human small arteries"],"prefix":"10.1111","volume":"129","author":[{"given":"Niels H","family":"Buus","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ulf","family":"Simonsen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans K","family":"Pilegaard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael J","family":"Mulvany","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,1,30]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.3109\/08037059609078071"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9149(98)00815-7"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.RES.78.3.415"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1476-5381.1993.tb13873.x"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.94.8.4193"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.92.11.3337"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.HYP.29.2.668"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1042\/cs0880611"},{"key":"e_1_2_7_10_1","first-page":"H283","article-title":"Continuous release of vasodilator prostanoids contributes to regulation of resting forearm blood flow in humans","volume":"274","author":"DUFFY S.J.","year":"1998","journal-title":"Am. 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