{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,15]],"date-time":"2026-02-15T21:02:08Z","timestamp":1771189328760,"version":"3.50.1"},"reference-count":12,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2004,3,9]],"date-time":"2004-03-09T00:00:00Z","timestamp":1078790400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["The Journal of Physiology"],"published-print":{"date-parts":[[2004,3,16]]},"abstract":"<jats:p>Distension of the main pulmonary artery and its bifurcation are known to result in a reflex vasoconstriction and increased respiratory drive; however, these responses are observed at abnormally high distending pressures. In this study we recorded afferent activity from pulmonary arterial baroreceptors to investigate their stimulus\u2013response characteristics and to determine whether they are influenced by physiological changes in intrathoracic pressure. In chloralose\u2010anaesthetized dogs, a cardiopulmonary bypass was established, the pulmonary trunk and its main branches were vascularly isolated and perfused with venous blood at pulstatile pressures designed to simulate the normal pulmonary arterial pressure waveform. Afferent slips of a cervical vagus were dissected and nerve fibres identified that displayed discharge patterns with characteristics expected from pulmonary arterial baroreceptors. Recordings were obtained with (a) chest open (b) chest closed and resealed, and (c) with phasic negative intrathoracic pressures in the resealed chest. Pressure\u2013discharge characteristics obtained in the open\u2010chest animals indicated that the threshold pulmonary pressure (corresponding to 5% of the overall response) was 17.1 \u00b1 2.9 and the inflexion point of the curve was 29.2 \u00b1 3.3 mmHg (mean \u00b1<jats:sc>s.e.m<\/jats:sc>). In closed\u2010chest animals the threshold and inflexion pressures were reduced to 12.0 \u00b1 1.7 and 20.7 \u00b1 1.8 mmHg. Application of phasic negative intrathoracic pressures further reduced the threshold and inflexion pressures to 9.5 \u00b1 1.2 mmHg (<jats:italic>P<\/jats:italic> &lt; 0.05 <jats:italic>vs.<\/jats:italic> open) and 14.7 \u00b1 0.8 mmHg (<jats:italic>P<\/jats:italic> &lt; 0.003 <jats:italic>vs.<\/jats:italic> open and <jats:italic>P<\/jats:italic> &lt; 0.02 <jats:italic>vs.<\/jats:italic> atmospheric). These results indicate that under physiological conditions, with closed\u2010chest and phasic negative intrathoracic pressure changes similar to those associated with normal breathing, activity from pulmonary baroreceptors is obtained at physiological pulmonary arterial pressures in intact animals.<\/jats:p>","DOI":"10.1113\/jphysiol.2003.057919","type":"journal-article","created":{"date-parts":[[2004,1,27]],"date-time":"2004-01-27T01:24:35Z","timestamp":1075166675000},"page":"805-814","source":"Crossref","is-referenced-by-count":21,"title":["Pulmonary arterial distension and vagal afferent nerve activity in anaesthetized dogs"],"prefix":"10.1113","volume":"555","author":[{"given":"Jonathan P.","family":"Moore","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roger","family":"Hainsworth","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark J.","family":"Drinkhill","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2004,3,9]]},"reference":[{"key":"e_1_2_5_2_1","first-page":"305","article-title":"Pulmonary baroreceptors in the cat","volume":"97","author":"Bianconi R","year":"1959","journal-title":"Arch Ital Biol"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.1961.sp006764"},{"key":"e_1_2_5_4_1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.1961.sp006764"},{"key":"e_1_2_5_5_1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.1963.sp007100"},{"key":"e_1_2_5_6_1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.1961.sp006695"},{"key":"e_1_2_5_7_1","doi-asserted-by":"crossref","first-page":"130","DOI":"10.1152\/ajplegacy.1938.125.1.130","article-title":"Differential pressures in the lesser circulation of the anaesthetized dog","volume":"125","author":"Hamilton WF","year":"1939","journal-title":"Am J Physiol"},{"key":"e_1_2_5_8_1","first-page":"pp. 649","volume-title":"Handbook of Physiologyi, section 12, Exercise: Regulation and Integration of Multiple Systems","author":"Janicki JS","year":"1996"},{"key":"e_1_2_5_9_1","doi-asserted-by":"publisher","DOI":"10.1161\/01.RES.40.1.64"},{"key":"e_1_2_5_10_1","doi-asserted-by":"crossref","first-page":"493","DOI":"10.1139\/y81-073","article-title":"Respiratory and cardiovascular responses to temperature changes in the perfused pulmonary arteries of the dog","volume":"59","author":"Ledsome JR","year":"1981","journal-title":"Can J Physiol Pharm"},{"key":"e_1_2_5_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-445X.2000.01945.x"},{"key":"e_1_2_5_12_1","doi-asserted-by":"crossref","first-page":"255","DOI":"10.1152\/jappl.1958.12.2.255","article-title":"Acute circulatory effects of pneumothorax in dogs","volume":"12","author":"Simmons DH","year":"1958","journal-title":"J App Physiol"},{"key":"e_1_2_5_13_1","doi-asserted-by":"publisher","DOI":"10.1002\/aja.1001160105"}],"container-title":["The Journal of Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1113%2Fjphysiol.2003.057919","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/physoc.onlinelibrary.wiley.com\/doi\/pdf\/10.1113\/jphysiol.2003.057919","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,11]],"date-time":"2023-10-11T03:12:48Z","timestamp":1696993968000},"score":1,"resource":{"primary":{"URL":"https:\/\/physoc.onlinelibrary.wiley.com\/doi\/10.1113\/jphysiol.2003.057919"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,3,9]]},"references-count":12,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2004,3,16]]}},"alternative-id":["10.1113\/jphysiol.2003.057919"],"URL":"https:\/\/doi.org\/10.1113\/jphysiol.2003.057919","archive":["Portico"],"relation":{},"ISSN":["0022-3751","1469-7793"],"issn-type":[{"value":"0022-3751","type":"print"},{"value":"1469-7793","type":"electronic"}],"subject":[],"published":{"date-parts":[[2004,3,9]]}}}