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Kidney International
Article
License: Elsevier Non-Commercial
Data sources: UnpayWall
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Kidney International
Article . 1973
License: Elsevier Non-Commercial
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Kidney International
Article . 1973 . Peer-reviewed
License: Elsevier Non-Commercial
Data sources: Crossref
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Compensatory renal growth after unilateral ureteral obstruction

Authors: Paulson, David F.; Fraley, Elwin E.;

Compensatory renal growth after unilateral ureteral obstruction

Abstract

Compensatory renal growth after unilateral ureteral obstruction. The accumulation of bulk renal protein, RNA and DNA was studied in mice during a 35-day period of accelerated renal growth in the kidney contralateral to that obstructed by acute ureteral ligation. Control mice were sham-operated and non-operated. RNA was determined by the method of Monroe and Fleck, DNA after Ceriotti and protein according to Lowry. The kidney contralateral to its acutely obstructed mate demonstrated accelerated growth with increases of 60% (protein), 52% (RNA) and 46% (DNA) at 35 days. These levels were significantly higher than the levels of protein (23%), RNA (24%) and DNA (23%) that were recorded in nonoperated animals. The rate of accelerated growth was similar to that previously reported after contralateral nephrectomy. Growth in the contralateral kidney occurred through both hypertrophy and hyperplasia with hypertrophy contributing most to the increase in size. In contrast, as observed in nonoperated mice, normal renal growth occurred through hyperplasia. The data suggest that the stimulus for accelerated renal growth is the functional rather than the physical removal of renal mass and that, once initiated, contralateral growth proceeds at a rate independent of the initial stimulus.Croissance compensatrice du rein apres obstruction urétérale unilatérale. L'accumulation de protéines du rein, de RNA et de DNA pendant une période de 35 jours de croissance accélérée du rein a été étudiée dans le rein opposé à celui dont l'uretère a été lié. Les contrôles ont subi un simulacre d'opération ou n'ont pas été opérés. Le RNA a été déterminé par la méthode de Monroe et Fleck, le DNA d'après Ceriotti et les protéines suivant Lowry. Dans le rein opposé à celui dont l'uretère était lié une croissance accélérée a été démontrée par une augmentation, après 35 jours, de 60% pour les protéines, 52% pour le RNA et 46% pour le DNA. Ces valeurs sont significativement plus élevées que celles obtenues chez les animaux non opérés (protéines: 23%; RNA: 24% et DNA: 23%). La vitesse de croissance accélérée est semblable à celle, antérieurement publiée, observée après néphrectomie unilatérale. La croissance observée est le fait à la fois d'une hypertrophie et d'une hyperplasie; l'hypertrophie est le déterminant principal de l'augmentation de la taille du rein. La croissance normale, telle qu'elle est observée chez la souris non opérée, est au contraire le fait de l'hyperplasie. Ces observation suggèrent que le stimulus de la croissance rénale accélérée est fonctionnel plutôt que physique (ablation de la masse rénale) et, qu'une fois induite, la croissance controlatérale progresse à une vitesse indépendante du stimulus initial.

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Keywords

Orotic Acid, Carbon Isotopes, Hyperplasia, Proteins, DNA, Hypertrophy, Organ Size, Kidney, Mice, Nephrology, Phenobarbital, Polyribosomes, Anesthesia, Intravenous, Animals, RNA, Kidney Diseases, Ureter, Ligation, Ureteral Obstruction

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    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    35
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
35
Average
Top 10%
Average
hybrid