title: Increased expression of (pro)renin receptor in the remnant kidneys of 5/6 nephrectomized rats.
abstract: Recent studies have revealed that (pro)renin receptor ((P)RR), a newly identified member of the renin-angiotensin system, is associated with renal organ damage. However, there is little information regarding the regulation of (P)RR expression in various pathophysiological conditions. We therefore examined the expression of (P)RR in the remnant kidneys of rats with renal mass ablation due to 5/6 nephrectomy by quantitative RT-PCR, Western blot analysis and immunohistochemistry. Expression levels of (P)RR mRNA were significantly increased in the remnant kidneys at day 56 after nephrectomy, when compared with sham operation (about 1.6-fold, P=0.001). Western blot analysis showed that expression levels of (P)RR protein were greatly increased in the remnant kidneys at day 56, compared with sham operation (about 7.9-fold, P=0.02). The renal tubular cells were immunostained with anti-(P)RR antibody in both 5/6 nephrectomized rats and sham operated rats. The glomeruli were sporadically immunostained in 5/6 nephrectomized rats, but not in sham operated rats. These findings indicate that the intra-renal (P)RR expression is increased in the remnant kidneys of 5/6 nephrectomized rats, and suggest that (P)RR may contribute to the renal injury.
authors.affiliation: Department of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences and Medicine, 6-3 Aramaki-aza-Aoba, Aoba-ku, Sendai 980-8578, Japan. hirose-t@m.tains.tohoku.ac.jp
authors.forename: Takuo
authors.initials: T
authors.lastname: Hirose
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Mori
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Totsune
authors.forename: Ryo
authors.initials: R
authors.lastname: Morimoto
authors.forename: Takahiro
authors.initials: T
authors.lastname: Maejima
authors.forename: Takuya
authors.initials: T
authors.lastname: Kawamura
authors.forename: Hirohito
authors.initials: H
authors.lastname: Metoki
authors.forename: Kei
authors.initials: K
authors.lastname: Asayama
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kikuya
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Ohkubo
authors.forename: Masahiro
authors.initials: M
authors.lastname: Kohzuki
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Takahashi
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Imai
mesh_terms: D000818:Animals; D005786:Gene Expression Regulation; D007678:Kidney Glomerulus / Q000293:injuries / Q000378:metabolism* / Q000473:pathology; D008297:Male; D009392:Nephrectomy; D012333:RNA, Messenger / Q000096:biosynthesis*; D051381:Rats; D011921:Rats, Inbred WKY; D011956:Receptors, Cell Surface / Q000096:biosynthesis*; D012083:Renin / Q000378:metabolism
chemical_list: D012333:RNA, Messenger; D011956:Receptors, Cell Surface; D012083:Renin