{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,29]],"date-time":"2025-10-29T03:27:58Z","timestamp":1761708478834},"reference-count":49,"publisher":"Portland Press Ltd.","issue":"11","content-domain":{"domain":["portlandpress.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2010,6,1]]},"abstract":"<jats:p>Reduced nephron endowment is associated with development of renal and cardiovascular disease. We hypothesized this may be attributable to impaired sodium homoeostasis by the remaining nephrons. The present study investigated whether a nephron deficit, induced by fetal uninephrectomy at 100\u00a0days gestation (term=150\u00a0days), resulted in (i) altered renal sodium handling both under basal conditions and in response to an acute 0.9% saline load (50\u00a0ml\u00b7kg\u22121 of body weight\u00b730\u00a0min\u22121); (ii) hypertension and (iii) altered expression of renal channels\/transporters in male sheep at 6 months of age. Uninephrectomized animals had significantly elevated arterial pressure (90.1\u00b11.6 compared with 77.8\u00b12.9 mmHg; P&amp;lt;0.001), while glomerular filtration rate and renal blood flow (per g of kidney weight) were 30% lower than that of the sham animals. Total kidney weight was similar between the groups. Renal gene expression of apical NHE3 (type 3 Na+\/H+ exchanger), ENaC (epithelium Na+ channel) \u03b2 and \u03b3 subunits and basolateral Na+\/K+ ATPase \u03b2 and \u03b3 subunits were significantly elevated in uninephrectomized animals, while ENaC \u03b1 subunit expression was reduced. Urine flow rate and sodium excretion increased in both groups in response to salt loading, but this increase in sodium excretion was delayed by approximately 90\u00a0min in the uninephrectomized animals, while total sodium output was 12% in excess of the infused load (P&amp;lt;0.05). In conclusion, the present study shows that animals with a congenital nephron deficit have alterations in tubular sodium channels\/transporters and cannot rapidly correct for variations in sodium intake probably contributing to the development of hypertension. This suggests that people born with a nephron deficit should be monitored for early signs of renal and cardiovascular disease.<\/jats:p>","DOI":"10.1042\/cs20090479","type":"journal-article","created":{"date-parts":[[2010,1,13]],"date-time":"2010-01-13T12:40:00Z","timestamp":1263386400000},"page":"669-680","update-policy":"http:\/\/dx.doi.org\/10.1042\/crossmark_policy","source":"Crossref","is-referenced-by-count":35,"title":["Reduced nephron endowment due to fetal uninephrectomy impairs renal sodium handling in male sheep"],"prefix":"10.1042","volume":"118","author":[{"given":"Reetu\u00a0R.","family":"Singh","sequence":"first","affiliation":[{"name":"Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria 3800, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kate\u00a0M.","family":"Denton","sequence":"additional","affiliation":[{"name":"Department of Physiology, Monash University, Clayton, Victoria 3800, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John\u00a0F.","family":"Bertram","sequence":"additional","affiliation":[{"name":"Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria 3800, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew\u00a0J.","family":"Jefferies","sequence":"additional","affiliation":[{"name":"Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria 3800, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karen\u00a0M.","family":"Moritz","sequence":"additional","affiliation":[{"name":"Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria 3800, Australia"},{"name":"School of Biomedical Sciences, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"288","published-online":{"date-parts":[[2010,3,9]]},"reference":[{"key":"2021113010093849000_B1","doi-asserted-by":"crossref","first-page":"1296","DOI":"10.1056\/NEJMoa041031","article-title":"Chronic kidney disease and the risks of death, cardiovascular events, and hospitalization","volume":"351","author":"Go","year":"2004","journal-title":"N. 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