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EVALUATION OF EFFECT OF SODIUM PENTOSAN POLYSULFATE (SPP) AND CITRATE ON STONE FORMATION IN HYPEROXALURIC RATS BY RADIOLUMINOGRAPHY USING ^<14>C-OXALATE

Research Project

Project/Area Number 06671608
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Urology
Research InstitutionOSAKA CITY UNIVERSITY

Principal Investigator

YAMAMOTO Keisuke  OSAKA CITY UNIVERSITY,UROLOGY,ASSOCIATE PROFESSOR, 医学部・泌尿器科学教室, 助教授 (70137230)

Co-Investigator(Kenkyū-buntansha) FUNAE Yosihiko  OSAKA CITY UNIVERSITY,CHEMISTRY,PROFESSOR, 医学部・化学研究室, 教授 (00047268)
SUGIMURA Kazunobu  OSAKA CITY UNIVERSITY,UROLOGY,ASSISTANT PROFESSOR, 医学部・泌尿器科学教室, 講師 (90187659)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1995: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1994: ¥900,000 (Direct Cost: ¥900,000)
KeywordsKIDNEY STONE / CALCIUM OXALATE STONE / OXALIC ACID / AUTORADIOGRAPHY / VITAMIN B6 DEFICIENCY / CITRATE / SODIUM PENTOSAN POLYSULFATE / ビタミンD6欠乏
Research Abstract

Using radioluminographic techniques, we studied the effect of sodium pentosan polysulfate (SPP) and citrate on calcium oxalate stone formation in hyperoxaluric rats induced by feeding vitamin B6 deficient diet. Hyperoxaluric rats were divided into four groups. Rats in the first group were given only tap water as the control. Rats in the second group (SPP 2-4w group) had no administration for 2 weeks and after that time were injected with 10mg SPP every other day for 2 weeks. The third group (SPP 0-4w group) received the same dose SPP every other day for 4 weeks. And rats in the last troup (Cit group) were maintained with 60mM citrate in tap water for 4 weeks. At 4 weeks all rats were injected with ^<14>C-oxalate intravenously (7.4MBq/kg) and 18 hours after the injection they were killed and immediately nephrectomized bilaterally. Kidneys were sliced 40mum in thickness using a microtome. Each kidney specimen was directly in contact with an imaging plate. The radioactivity of ^<14>C-oxal … More ate in each imaging plate was measured by photostimulated luminescence method. Radioactivity in cach kidney slice could be measured more accurately by radioluminographic techniques than conventional autoradiographic studies. Moreover, the radioactivity measured by radioluminography correlated excellently with that of liquid scintillation counter method. Ten radioimmunograms were analyzed in each animal and both the total number and total detected radioactivity of deposits of ^<14>C-oxalate were calculated. The maximum radioactivity of deposits in each rat was also measured.
In control group, deposits of ^<14>C-oxalate which indicated calcium oxalate stone formation were induced in the renal papilla. In the other three groups, the total number and total detected radioactivity of deposits of ^<14>C-oxalate were significantly decreased in comparison with the control. The maximum radioactivity of deposits in these three groups was significantly lower than that of the control group, respectively. These results indicate that both SPP and citrate must be effective inhibitory agents on urinary stone formation. Less

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] T.Kanazawa: "Macro and micro autoradiographic studies on oxalate in normal and hyperoxaluric rats." Urolithiasis 2 Plenum,New York. 113-115 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] S.Kamikawa: "Autoradiographic study on calcium oxalate crystal fixation in rat kidney." Urolithiasis Consensus and Controversis. 429-430 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 上川禎則: "オートラジオグラフィーによる蓚酸の腎内分布の解析" 日本泌尿器科学会雑誌. (投稿中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Kanazawa: "Macro and micro autoradiographic studies on oxalate in normal and hyperoxaluric rats." Urolithiasis 2 Plenum,New York,1994. 113-115 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Kamikawa: "Autoradiographic study on calcium oxalate crystal fixation in rat kidney." Urolithiasis Consensus and Controversis. 429-430 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K.Yamamoto: "ESWL monotherapy for staghom renal caliculi." Urolithiasis 2. なし. 533-534 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Kanazawa: "Macro and micro autoradiographic studies on oxalate in normal and hyperoxaluria rats." Urolithiasis 2. 113-115 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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