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  • Title: Toxicity to tumour cells of diethylaminoreserpine.
    Author: Lehnert S.
    Journal: Br J Cancer Suppl; 1980 Apr; 4():222-5. PubMed ID: 6932928.
    Abstract:
    Diethylaminoreserpine (DL-152), an inhibitor of cyclic AMP phosphodiesterase, has been shown to kill clonogenic cells of the KHT fibrosarcoma when the drug is given intraperitoneally to the tumour-bearing mouse. DL-152 shows a greater toxicity to acutely hypoxic cells than to aerated cells. Following DL-152 injection, the number of surviving clonogenic tumour cells fell progressively until a minimum level was reached at 48 h after injection; repopulation commenced immediately and proceeded rapidly. The extent of cell killing following DL-152 injection was directly proportional to the size of the tumour at the time of treatment. A single injection of DL-152 produced no measurable change in the growth rate of small tumours. Treatment of larger tumours however, induced a period of slow growth followed by a return to the rate of growth observed in controls.
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