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A Röckel

Publications and source records attributed to A Röckel.

At least 73 records · Page 4Linked to original sources

[Hemo and cross dialysis treatment in phalloidin intoxication in the waking rat].

In vitro 14C-Methyl-Phalloidin is found to be well dialysable; in vivo dialysis is less effective. In rats the application of 2 mg/kg Phalloidin i.v. led to death after 106 minutes on the average. Hemodialysis with electrolyte-glucose solution or with plasma protein solution immediately started after Phalloidin injection did not alter the survival time significantly. Only a group of rats which was cross dialysed immediately after intoxication showed a statistically insignificant prolongation of survival time of 16 minutes. The histomorphological findings of the liver were similar in all groups. We found a phalloidinic vacuolisation of the cytoplasm of the lobular periphery, hemorrhagic necrosis and also fatty changes in the periphery of the lobule with small fat droplets and pycnosis of nuclei. Specific Phalloidin effects, too, were found in the liver of both animals used in cross-dialysis, which proves that Phalloidin is dialysable by this method.

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Is there any transtubular reabsorption of filtered proteins in rat kidney?

The bovine protease inhibitor aprotinin (Trasylol) has a high affinity to the kidney and is preferentially pinocytized in the proximal tubule. After i.v. injection of 1mug 124 I aprotinin the blood content decreases to 2.8% of the primary injected amount within 3 hrs, while simultaneously each kidney contains 29%. This substance was used to test whether or not a peptide which is pinocytized, is released in the intact form into the peritubular blood. By a cross circulation technique with two unilaterally nephrectomized rats we were unable to detect any transport of pinocytized, intact peptide through the proximal tubule cell over the observed cross circulation period of 1-8 hrs even when using 5000 times the above dosage. Since the total amount of aprotinin in the kidney is immunologically reactive (ca. 97%), and 65% of the radioactivity in the blood is not reactive after 6 hrs, we believe that the last step in the absorption process consists in digestion inside the lysosomes and instantaneous release of the split products into the blood.

Animals↗