Effects of oral adsorbent AST-120 (Kremezin) on renal function and glomerular injury in early-stage renal failure of subtotal nephrectomized rats.
The aim of the present study was to determine if treatment with an oral adsorbent (AST-120, Kremezin) might decrease the urinary albumin excretion and serum indoxyl sulfate (s-IS), and prevent glomerular sclerosis in early-stage renal failure, i.e. 0.9-1.2 mg/dl of serum creatinine (s-Cr) and 60-95 mg/dl of blood urea nitrogen (BUN), in subtotal (3/4) nephrectomized rats. Levels of s-Cr and s-IS in the AST-120-treated rats were significantly lower than those in the untreated control rats. The AST-120-treated rats showed an increase of creatinine clearance. Urinary protein and indoxyl sulfate excretion in the AST-120-treated rats were also significantly lower than those in the untreated control rats. The ratio of glomerular tuft area to the area of Bowman's capsules (GT/BC) in the AST-120-treated rats was significantly lower than that in the untreated control rats. The degree of glomerular sclerosis and tubulointerstitial fibrosis in the AST-120-treated rats was significantly lower than that in the untreated control rats. Furthermore, there was a significant relationship among the degree of GT/BC, glomerular sclerosis, tubulointerstitial fibrosis and the levels of urinary protein excretion. It appears that AST-120 might decrease the accumulation of s-Cr and s-IS, and prevent glomerular sclerosis in early stage renal failure in the subtotal nephrectomized rats.
Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.
Noriyoshi
N
Kobayashi
Atsuko
A
Maeda
Satoshi
S
Horikoshi
Isao
I
Shirato
Yasuhiko
Y
Tomino
Michihito
M
Ise
D000327:Adsorption; D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D001806:Blood Urea Nitrogen; D002244:Carbon / Q000494:pharmacology*; D003404:Creatinine / Q000097:blood; D005355:Fibrosis / Q000473:pathology; D007200:Indican / Q000097:blood / Q000652:urine; D007668:Kidney / Q000033:anatomy & histology / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D007678:Kidney Glomerulus / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D008297:Male; D009392:Nephrectomy; D010087:Oxides / Q000494:pharmacology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D051437:Renal Insufficiency / Q000503:physiopathology*; D012598:Sclerosis / Q000473:pathology
D010087:Oxides; D002244:Carbon; C040896:AST 120; D003404:Creatinine; D007200:Indican