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Lung phospholipids in the embryonic and immature chicken: Changes in lipid composition and biosynthesis during maturation of the surfactant system

dc.contributor.authorHylka, Vincent W.en_US
dc.contributor.authorDoneen, Byron A.en_US
dc.date.accessioned2006-04-28T16:39:45Z
dc.date.available2006-04-28T16:39:45Z
dc.date.issued1982-03-01en_US
dc.identifier.citationHylka, Vincent W.; Doneen, Byron A. (1982)."Lung phospholipids in the embryonic and immature chicken: Changes in lipid composition and biosynthesis during maturation of the surfactant system." Journal of Experimental Zoology 220(1): 71-80. <http://hdl.handle.net/2027.42/38089>en_US
dc.identifier.issn0022-104Xen_US
dc.identifier.issn1097-010Xen_US
dc.identifier.urihttps://hdl.handle.net/2027.42/38089
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=7077266&dopt=citationen_US
dc.description.abstractTotal phospholipid and its components were measured in lungs of the embryonic chick, and in tissue, lamellar bodies, and lavage fluid after hatching. Phosphatidylcholine (PC), the major phospholipid in surfactant, was fractionated and the amount and fatty acid composition of its disaturated (DSPC) component was determined. The synthetic rates of PC, DSPC, and other choline phospholipids were determined on days 14 and 19 of incubation from incorporation of 14 C-choline. Choline pool size was also estimated at these times. Phospholipid content of the lung increased most rapidly after day 18 of incubation with the greatest increase in PC. The PC synthesized just prior to breathing was enriched in DSPC, which constituted 45% of PC on day 19 and only 30% on day 14. DSPC content was even lower in embryonic liver and yolk. Incorporation of 14 C-choline in vitro into pulmonary PC, Sphingomyelin (Sphingo), and DSPC was greater in birds before breathing (day 19) than in the younger embryos. Choline pool size decreased between days 14 and 19 of incubation, but the synthetic rate of DSPC doubled in this interval. Increased accumulation and biosynthesis of pulmonary PC, Sphingo, and DSPC in lung tissue of the embryo paralleled appearance of lamellar bodies. In 5–6-week-old chickens the major pulmonary phospholipid was also DSPC. In lavage, 70% of PC was DSPC, predominantly dipalmitoyl PC. As in the mammalian lung, PC, especially its DSPC component, forms the major phospholipid of avian surfactant, and the synthesis of DSPC is specifically stimulated prior to breathing.en_US
dc.format.extent1325387 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherWiley Subscription Services, Inc., A Wiley Companyen_US
dc.subject.otherLife and Medical Sciencesen_US
dc.subject.otherCell & Developmental Biologyen_US
dc.titleLung phospholipids in the embryonic and immature chicken: Changes in lipid composition and biosynthesis during maturation of the surfactant systemen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelEcology and Evolutionary Biologyen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDivision of Biological Sciences, Department of Zoology, University of Michigan, Ann Arbor, Michigan 48109en_US
dc.contributor.affiliationumDivision of Biological Sciences, Department of Zoology, University of Michigan, Ann Arbor, Michigan 48109en_US
dc.identifier.pmid7077266en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/38089/1/1402200110_ftp.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1002/jez.1402200110en_US
dc.identifier.sourceJournal of Experimental Zoologyen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


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