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However, the mechanisms by which altered renal blood flow (RBF) autoregulation promotes hypertension-induced renal injury remain to be determined. The present study compared the time course of changes in renal hemodynamics and the progression of CKD during the development of DOCA-salt hypertension in FHH 1<jats:sup>BN<\/jats:sup>congenic rats [wild-type (WT)] with an intact myogenic response versus FHH 1<jats:sup>BN<\/jats:sup>Add3KO ( Add3KO) rats, which have impaired myogenic response. RBF was well autoregulated in WT rats but not in Add3KO rats. Glomerular capillary pressure rose by 6 versus 14 mmHg in WT versus Add3KO rats when blood pressure increased from 100 to 150 mmHg. After 1 wk of hypertension, glomerular filtration rate increased by 38% and glomerular nephrin expression decreased by 20% in Add3KO rats. Neither were altered in WT rats. Proteinuria doubled in WT rats versus a sixfold increase in Add3KO rats. The degree of renal injury was greater in Add3KO than WT rats after 3 wk of hypertension. RBF, glomerular filtration rate, and glomerular capillary pressure were lower by 20%, 28%, and 19% in Add3KO rats than in WT rats, which was associated with glomerular matrix expansion and loss of capillary filtration area. The results indicated that impaired RBF autoregulation and eutrophic remodeling of preglomerular arterioles increase the transmission of pressure to glomeruli, which induces podocyte loss and accelerates the progression of CKD in hypertensive Add3KO rats.<\/jats:p>","DOI":"10.1152\/ajprenal.00239.2020","type":"journal-article","created":{"date-parts":[[2020,8,24]],"date-time":"2020-08-24T09:31:17Z","timestamp":1598261477000},"page":"F624-F635","source":"Crossref","is-referenced-by-count":30,"title":["Impaired renal hemodynamics and glomerular hyperfiltration contribute to hypertension-induced renal injury"],"prefix":"10.1152","volume":"319","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5328-8050","authenticated-orcid":false,"given":"Letao","family":"Fan","sequence":"first","affiliation":[{"name":"Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, 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