Bovine adrenals and hypothalamus are a major source of proscillaridin A- and ouabain-immunoreactivities.

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  • Author(s): Li S;Li S; Eim C; Kirch U; Lang RE; Schoner W
  • Source:
    Life sciences [Life Sci] 1998; Vol. 62 (11), pp. 1023-33.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: Netherlands NLM ID: 0375521 Publication Model: Print Cited Medium: Print ISSN: 0024-3205 (Print) Linking ISSN: 00243205 NLM ISO Abbreviation: Life Sci Subsets: MEDLINE
    • Publication Information:
      Publication: <2008->: Amsterdam : Elsevier
      Original Publication: Oxford; Elmsford, N. Y. [etc.] Pergamon Press.
    • Subject Terms:
      Adrenal Glands/*metabolism ; Cardiotonic Agents/*metabolism ; Hypothalamus/*metabolism ; Ouabain/*metabolism ; Proscillaridin/*metabolism; Animals ; Cardiotonic Agents/immunology ; Cattle ; Chromatography, High Pressure Liquid ; Cross Reactions ; Enzyme-Linked Immunosorbent Assay ; Humans ; Ouabain/immunology ; Proscillaridin/immunology ; Sodium-Potassium-Exchanging ATPase/metabolism
    • Abstract:
      Besides an isomer of the cardenolide ouabain, a material with a similar HPLC retention time as ouabain but cross-reactivating with antibodies against the bufadienolide proscillaridin A and inhibiting the sodium pump is known to circulate in human blood plasma (B. SICH et al., Hypertension 27, 1073-1078 (1996).). The concentrations of both substances are known to correlate with the blood pressure. It was the intention of this work to localize tissues that contain the highest concentrations of the proscillaridin A immunoreactive material, to correlate its concentration with that of ouabain and to get information whether the concentration of this material simply reflects the number of sodium pumps of the tissue extracted. Specific antibodies for each cardiotonic steroid were used to test the tissue concentration. This report shows that in bovine tissues the distribution pattern of proscillaridin A and ouabain immunoreactivities are similar and that hypothalamus and adrenals show the highest concentrations. The cross-reactive material did not reflect the number of sodium pumps per g of wet weight tissue as measured by [3H]ouabain binding. Therefore, it is unlikely that the tissue concentrations in both immunoreactivities reflects the tissue capacity of sodium pumps labeled with cardiotonic steroids via the blood plasma. The study rather favors the concept that two different types of inhibitors of the sodium pump exist within both tissues.
    • Accession Number:
      0 (Cardiotonic Agents)
      5ACL011P69 (Ouabain)
      EC 7.2.2.13 (Sodium-Potassium-Exchanging ATPase)
      KC6BL281EN (Proscillaridin)
    • Publication Date:
      Date Created: 19980327 Date Completed: 19980402 Latest Revision: 20191211
    • Publication Date:
      20221213
    • Accession Number:
      10.1016/s0024-3205(98)00023-x
    • Accession Number:
      9515560