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      Microinjections de sodium et d’inuline marqués dans les capillaires du rein de Hamster

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      ,
      Nephron
      S. Karger AG

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          Abstract

          Des microinjections d’une solution contenant du <sup>24</sup>Na et de I’inuline <sup>14</sup>C ont été effectuées dans des anses capillaires de la papille du rein, chez le hamster en diurèse saline. L’excretion des indicateurs a été étudiée dans I’urine urétérale en fonction du temps. Dans les 16 expériences pratiquées on observe une excrétion de <sup>24</sup>Na notable (en moyenne 6% de la dose), relativement constante et précédant I’excrétion d’inuline <sup>14</sup>C; de plus, cette excrétion de <sup>24</sup>Na est absente dans I’urine du rein controlatéral (3 expériences). L’excrétion de sodium observée traduit un passage direct à travers les parois d’un segment médullaire des néphrons possédant une très haute perméabilité au sodium; qualitativement, ces résultats permettent de localiser ce segment le long des anses de Henle (probablement leur segment grêle); quantitativement, ils semblent compatibles avec un échange complet entre les ions sodium de I’urine intratubulaire et du milieu interstitiel de la medulla.

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          Author and article information

          Journal
          NEF
          Nephron
          10.1159/issn.1660-8151
          Nephron
          S. Karger AG
          1660-8151
          2235-3186
          1965
          1965
          25 November 2008
          : 2
          : 4
          : 219-229
          Affiliations
          Département de Biologie, Commissariat à l’Energie Atomique, Saclay
          Article
          179405 Nephron 1965;2:219–229
          10.1159/000179405
          5860275
          3efdd77d-9f05-4d54-8b1c-220079476de9
          © 1965 S. Karger AG, Basel

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          History
          Page count
          Pages: 11
          Categories
          Paper

          Cardiovascular Medicine,Nephrology
          Cardiovascular Medicine, Nephrology

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