Renal hemodynamics and medullary osmolal gradient in ischemic acute renal failure in rabbits
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- NIHEI Hiroshi
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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- HONDA Nishio
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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- SUZUKI Keiji
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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- NAGASE Mitsumasa
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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- YOSHITOSHI Yawara
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
書誌事項
- タイトル別名
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- Renal Hemodynaniics and Medullary Osmolal Gradient in Ischemic Acute Renal Failure in Rabbits
- Renal hemodynamics and medullary osmola
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抄録
The effects of 2hours of renal artery occlusion were studied in pre-viously uninephrectomized rabbits. Oliguric renal failure by arterial clamping was produced. Renal blood flow was maintained during ob-servation periods, except for an early decrease in outer cortical blood flow without change elsewhere. During the oliguric stage medullary osmolality was markedly diminished, concomitantly with reduced (U/P)osm. Cin, EPAH and sodium reabsorption were decreased, accompanied by tubular necrosis and intratubular casts. During the early diuretic stage Cin, medullary osmolality and (U/P)osm were still reduced. Intratubular casts disappeared while regenerated tubular cells were focally observed. Two weeks after the occlusion, improved Cin, EPAH, sodium reabsorption, medullary osmolality and (U/P)osm, and regenerated tubular epithelium were found. In 7 weeks Cin and EPAH had returned to the preclamping values whereas medullary osmolality remained decreased with the ap-pearance of medullary fibrosis. (U/P)osm was not completely restored. The findings indicate that during the oliguric stage of acute renal failure of rabbits renal blood flow is maintained, except for a decrease in outer cortical flow, and urine concentrating ability is restored more slowly than other measured functions.
収録刊行物
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- Japanese Heart Journal
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Japanese Heart Journal 16 (1), 44-56, 1975
International Heart Journal刊行会
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詳細情報 詳細情報について
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- CRID
- 1390282680016120320
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- NII論文ID
- 130000763475
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- NII書誌ID
- AA00690786
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- ISSN
- 1348673X
- 00214868
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- NDL書誌ID
- 1581145
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- PubMed
- 1113448
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可