{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T12:42:34Z","timestamp":1791117754990,"version":"4.1.0"},"reference-count":33,"publisher":"American Physiological Society","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Lung Cellular and Molecular Physiology"],"published-print":{"date-parts":[[2001,8,1]]},"abstract":"<jats:p>Our purpose was to determine if abundance of proteins underlying nitric oxide (NO) and prostanoid production is altered in lungs of piglets with aortopulmonary shunts. We also evaluated whether shunted piglets exhibit abnormal pulmonary vascular responses to ACh, an endothelium-dependent agent that mediates dilation in part by NO and prostanoid release. At age 4\u20135 days, piglets underwent either a sham operation or placement of an aortopulmonary shunt. At age 5\u20136 wk, pulmonary arterial pressure (Ppa) and cardiac output by the thermodilution technique were measured in anesthetized piglets. Ppa responses to the endothelium-dependent agent, ACh, and to a non-endothelium-dependent agent, papaverine, were measured in perfused lungs. An immunoblot technique was applied to homogenates of whole lung tissue and two size groups of pulmonary arteries. In shunted piglets, Ppa and cardiac output were elevated, and Ppa responses to papaverine were reduced. ACh responses were not decreased when expressed relative to Ppa dilation with papaverine. Endothelial nitric oxide synthase (eNOS), cyclooxygenase-1, cyclooxygenase-2, prostacyclin synthase, and thromboxane synthase amounts were unaltered in all lung tissue homogenates. Altered abundance of eNOS and\/or prostanoid enzymes does not contribute to the blunted dilation and the elevation in Ppa associated with aortopulmonary shunts in newborn piglets.<\/jats:p>","DOI":"10.1152\/ajplung.2001.281.2.l475","type":"journal-article","created":{"date-parts":[[2017,12,23]],"date-time":"2017-12-23T21:14:10Z","timestamp":1514063650000},"page":"L475-L482","source":"Crossref","is-referenced-by-count":8,"title":["eNOS and prostanoid enzymes in lungs of newborn piglets with chronic aortopulmonary shunts"],"prefix":"10.1152","volume":"281","author":[{"given":"Candice D.","family":"Fike","sequence":"first","affiliation":[{"name":"Department of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark R.","family":"Kaplowitz","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Wake Forest University School of Medicine, Winston-Salem, North Carolina 27157"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"suffix":"II","given":"Michael","family":"Bousamra","sequence":"additional","affiliation":[{"name":"Departments of Pediatrics and Cardiothoracic Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin 53226; 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