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  • 1980-1984  (1)
  • 1975-1979  (1)
  • Haemorrhagic necrosis  (2)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Journal of cancer research and clinical oncology 96 (1980), S. 53-64 
    ISSN: 1432-1335
    Schlagwort(e): Adenine nucleotides ; Endotoxin ; Haemorrhagic necrosis ; Mitochondrial damage
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Alterations in the tumor adenine nucleotide pattern (TANP) have been measured at various times in a solid murine tumor undergoing haemorrhagic necrosis in vivo as a consequence of endotoxin administration. The ATP level fell rapidly in the first few hours; the AMP content initially rose, but began to fall back at 4 h. Overall adenine nucleotide losses occurred promptly, with only 4% of the original amount remaining at 24 h. Levels of glucose, glucose 6-phosphate, pyruvate, and lactate were also measured, and, with the exception of lactate, were for the most part lower in tumors from endotoxin-treated animals. Only minor alterations in the adenine nucleotide pattern were seen after either 4 or 24 h in the livers of normal or tumorbearing mice in response to endotoxin injection, even when the creatures were moribund. The changes reported in the tumor are believed to have arisen not as a result of capillary stasis, but from prompt and selective disturbances to mitochondrial function in the tumor which have been described previously (Jones, 1977b, 1979).
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Journal of cancer research and clinical oncology 93 (1979), S. 245-254 
    ISSN: 1432-1335
    Schlagwort(e): Mitochondrial damage ; Haemorrhagic necrosis ; Endotoxin
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Disturbances in the functional properties of tumor mitochondria have been studied during the course of induction of haemorrhage brought about by endotoxin in the murine Crocker sarcoma (S 180). Extensive impairment of function was already present in mitochondria isolated from control tumors, as shown by low respiratory control ratios. The existing mitochondrial damage intensified promptly in response to injection of endotoxin long before the onset of haemorrhage at 4 h. The nature of the additional damage took two forms, depending on the duration of exposure to endotoxin; first, at 30 min, a true uncoupling of oxidative phosphorylation was seen, largely reversible in vitro by pre-treatment of the isolated organelles with bovine serum albumin (BSA). Second, at 1 h and later, oxygen utilisation in the presence of succinate, ADP and inorganic phosphate (P i) was depressed. The pre-addition of BSA consistently lowered respiration rates with succinate andP i in all preparations. The extent of endogenous inhibition of the adenine nucleotide translocase appeared unaltered by endotoxin in vivo.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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