{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T07:37:46Z","timestamp":1772523466751,"version":"3.50.1"},"reference-count":49,"publisher":"American Physiological Society","issue":"5","funder":[{"DOI":"10.13039\/501100000925","name":"Department of Health, Australian Government | National Health and Medical Research Council (NHMRC)","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Cerebral Palsy Alliance of Australia"},{"name":"Australian Research Council Future Fellowship"},{"DOI":"10.13039\/501100001061","name":"Rebecca L. Cooper Medical Research Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001061","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Victorian Government Operational Infrastructure Support Program"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Applied Physiology"],"published-print":{"date-parts":[[2017,11,1]]},"abstract":"<jats:p>Oxidative stress arising from suboptimal placental function contributes to a multitude of pathologies in infants compromised by fetal growth restriction (FGR). FGR infants are at high risk for respiratory dysfunction after birth and poor long-term lung function. Our objective was to investigate the contribution of oxidative stress to adverse lung development and the effects of melatonin administration, a powerful antioxidant, on lung structure in FGR lambs. Placental insufficiency and FGR was surgically induced in 13 fetal sheep at \u223c105 days of gestation by ligation of a single umbilical artery. Maternal intravenous melatonin infusion was commenced in seven of the ewes 4 h after surgery and continued until birth. Lambs delivered normally at term and lungs were collected 24 h after birth for histological assessment of lung structure and injury and compared with appropriately grown control lambs ( n = 8). FGR fetuses were hypoxic and had lower glucose during gestation compared with controls. Melatonin administration prevented chronic hypoxia. Within the lung, FGR caused reduced secondary septal crest density and altered elastin deposition compared with controls. Melatonin administration had no effect on the changes to lung structure induced by FGR. We conclude that chronic FGR disrupts septation of the developing alveoli, which is not altered by melatonin administration. These findings suggest that oxidative stress is not the mechanism driving altered lung structure in FGR neonates. Melatonin administration did not prevent disrupted airway development but also had no apparent adverse effects on fetal lung development.<\/jats:p><jats:p>NEW &amp; NOTEWORTHY Fetal growth restriction (FGR) results in poor respiratory outcomes, which may be caused by oxidation in utero. We investigated the contribution of oxidative stress to adverse lung development and the effects of melatonin administration, a powerful antioxidant, on lung structure in FGR lambs. FGR disrupted septation of the developing alveoli, which is not altered by melatonin administration. Oxidative stress may not be the mechanism driving altered lung structure in FGR neonates.<\/jats:p>","DOI":"10.1152\/japplphysiol.00783.2016","type":"journal-article","created":{"date-parts":[[2017,8,18]],"date-time":"2017-08-18T00:55:15Z","timestamp":1503017715000},"page":"1195-1203","source":"Crossref","is-referenced-by-count":22,"title":["Effects of antenatal melatonin therapy on lung structure in growth-restricted newborn lambs"],"prefix":"10.1152","volume":"123","author":[{"given":"Graeme R.","family":"Polglase","sequence":"first","affiliation":[{"name":"The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, Australia;"},{"name":"Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jade","family":"Barbuto","sequence":"additional","affiliation":[{"name":"The Ritchie Centre, Hudson Institute of Medical Research, Clayton, Victoria, 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