title: Differential renal glomerular changes induced by 5/6 nephrectomization between common marmoset monkeys (Callithrix jacchus) and rats.
abstract: We have been investigating the relevance and availability of 5/6 nephrectomized (Nx) common marmoset monkeys (Callithrix jacchus) as a chronic renal failure model. As a part of this investigation, renal glomerular changes in the Nx marmosets were histopathologically and immunohistochemically evaluated, and then compared with those in 5/6 Nx SD rats. In the Nx marmosets, the blood and urine parameters were elevated, excluding urine protein; histopathologically, enlargement of Bowman's capsule and atrophy of the glomeruli were observed in all animals, and other slight changes were also observed in 1 or 2 marmosets. There were no significant changes in the mesangial matrix injury score, vimentin and desmin positivity or the number of WT1 positive cells between the control and Nx marmoset groups. On the other hand, in the Nx rats, the blood and urine parameters were elevated; histopathologically, various changes were observed in the glomeruli, and the mesangial matrix injury score, vimentin and desmin positivity were increased, while the number of WT1 positive cells was decreased; these histopathological impacts on the renal glomerulus at 13 weeks after Nx in rats were more severe than that in the Nx marmosets. Because the glomerular basement membrane (GBM) was much thicker in the marmosets than in the rats in electron microscopy, the weaker pathological changes in the Nx marmosets might be due to the GBM thickness. This study showed for the first time glomerular lesions developed in the Nx marmosets, and the possible pathogenesis of the glomerular lesions was discussed.
authors.affiliation: Toxicological Research Laboratories, Kyowa Hakko Kirin, Co., Ltd., 1188 Shimotogari, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8731, Japan. yui.manabe@kyowa-kirin.co.jp
authors.forename: Yui
authors.initials: Y
authors.lastname: Suzuki
authors.forename: Itaru
authors.initials: I
authors.lastname: Yamaguchi
authors.forename: Noriko
authors.initials: N
authors.lastname: Onoda
authors.forename: Takashi
authors.initials: T
authors.lastname: Saito
authors.forename: Kensuke
authors.initials: K
authors.lastname: Myojo
authors.forename: Minami
authors.initials: M
authors.lastname: Imaizumi
authors.forename: Chie
authors.initials: C
authors.lastname: Takada
authors.forename: Naoya
authors.initials: N
authors.lastname: Kimoto
authors.forename: Katsumi
authors.initials: K
authors.lastname: Takaba
authors.forename: Jyoji
authors.initials: J
authors.lastname: Yamate
mesh_terms: D000818:Animals; D002144:Callithrix; D004195:Disease Models, Animal; D005260:Female; D007150:Immunohistochemistry; D007677:Kidney Function Tests; D007678:Kidney Glomerulus / Q000473:pathology*; D009392:Nephrectomy; D051381:Rats; D017207:Rats, Sprague-Dawley; D051436:Renal Insufficiency, Chronic / Q000097:blood / Q000209:etiology / Q000473:pathology* / Q000652:urine; D013045:Species Specificity