PMID- 35351818 OWN - NLM STAT- MEDLINE DCOM- 20220704 LR - 20230703 IS - 1533-3450 (Electronic) IS - 1046-6673 (Print) IS - 1046-6673 (Linking) VI - 33 IP - 7 DP - 2022 Jul TI - Brief Early Life Angiotensin-Converting Enzyme Inhibition Offers Renoprotection in Sheep with a Solitary Functioning Kidney at 8 Months of Age. PG - 1341-1356 LID - 10.1681/ASN.2021111534 [doi] AB - BACKGROUND: Children born with a solitary functioning kidney (SFK) are predisposed to develop hypertension and kidney injury. Glomerular hyperfiltration and hypertrophy contribute to the pathophysiology of kidney injury. Angiotensin-converting enzyme inhibition (ACEi) can mitigate hyperfiltration and may be therapeutically beneficial in reducing progression of kidney injury in those with an SFK. METHODS: SFK was induced in male sheep fetuses at 100 days gestation (term=150 days). Between 4 and 8 weeks of age, SFK lambs received enalapril (SFK+ACEi; 0.5mg/kg per day, once daily, orally) or vehicle (SFK). At 8 months, we examined BP, basal kidney function, renal functional reserve (RFR; GFR response to combined amino acid and dopamine infusion), GFR response to nitric oxide synthase (NOS) inhibition, and basal nitric oxide (NO) bioavailability (basal urinary total nitrate and nitrite [NOx]). RESULTS: SFK+ACEi prevented albuminuria and resulted in lower basal GFR (16%), higher renal blood flow (approximately 22%), and lower filtration fraction (approximately 35%), but similar BP, compared with vehicle-treated SFK sheep. Together with greater recruitment of RFR (approximately 14%) in SFK+ACEi than SFK animals, this indicates a reduction in glomerular hyperfiltration-mediated kidney dysfunction. During NOS inhibition, the decrease in GFR (approximately 14%) was greater among SFK+ACEi than among SFK animals. Increased (approximately 85%) basal urinary total NOx in SFK+ACEi compared with SFK animals indicates elevated NO bioavailability likely contributed to improvements in kidney function and prevention of albuminuria. CONCLUSIONS: Brief and early ACEi in SFK is associated with reduced glomerular hyperfiltration-mediated kidney disease up to 8 months of age in a sheep model. CI - Copyright (c) 2022 by the American Society of Nephrology. FAU - McArdle, Zoe AU - McArdle Z AD - Cardiovascular Program, Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Melbourne, Victoria, Australia. FAU - Singh, Reetu R AU - Singh RR AD - Cardiovascular Program, Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Melbourne, Victoria, Australia. FAU - Bielefeldt-Ohmann, Helle AU - Bielefeldt-Ohmann H AD - School of Veterinary Science, The University of Queensland, Gatton, Queensland, Australia. AD - School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, Queensland, Australia. FAU - Moritz, Karen M AU - Moritz KM AD - Child Health Research Centre and School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia. FAU - Schreuder, Michiel F AU - Schreuder MF AD - Department of Pediatric Nephrology, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - Denton, Kate M AU - Denton KM AUID- ORCID: 0000-0002-5929-4387 AD - Cardiovascular Program, Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Melbourne, Victoria, Australia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220329 PL - United States TA - J Am Soc Nephrol JT - Journal of the American Society of Nephrology : JASN JID - 9013836 RN - 0 (Angiotensins) RN - 31C4KY9ESH (Nitric Oxide) SB - IM MH - Albuminuria MH - Angiotensins MH - Animals MH - Glomerular Filtration Rate MH - Kidney MH - *Kidney Diseases/etiology/prevention & control MH - Male MH - Nitric Oxide MH - Sheep MH - *Solitary Kidney PMC - PMC9257814 OTO - NOTNLM OT - angiotensin converting enzyme inhibition OT - glomerular hyperfiltration OT - kidney disease OT - nitric oxide bioavailability OT - renal functional reserve OT - solitary functioning kidney EDAT- 2022/03/31 06:00 MHDA- 2022/07/06 06:00 PMCR- 2023/07/01 CRDT- 2022/03/30 05:40 PHST- 2021/11/30 00:00 [received] PHST- 2022/03/18 00:00 [accepted] PHST- 2022/03/31 06:00 [pubmed] PHST- 2022/07/06 06:00 [medline] PHST- 2022/03/30 05:40 [entrez] PHST- 2023/07/01 00:00 [pmc-release] AID - 00001751-202207000-00019 [pii] AID - 2021111534 [pii] AID - 10.1681/ASN.2021111534 [doi] PST - ppublish SO - J Am Soc Nephrol. 2022 Jul;33(7):1341-1356. doi: 10.1681/ASN.2021111534. Epub 2022 Mar 29.