| Literature DB >> 3621454 |
Abstract
Enhancement of the cytotoxicity of adriamycin (ADR) by addition of verpamil (VPM) was selective and, in part, concentration-dependent. In an ADR-resistant murine L5178Y lymphoma subline sensitivity was improved with ADR and 1 microM VPM, whereas the cytotoxic effects of mitoxantrone or esorubicin were not affected by VPM. In human ovarian SK-OV-3 tumour cells ADR cytotoxicity was only enhanced by 6.6 microM VPM and there was no selective advantage against an ADR-resistant subline. Circumvention of ADR resistance by VPM is not a universal phenomenon, appearing least effective against sublines expressing relatively low orders of resistance, which may be those most commonly encountered clinically.Entities:
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Year: 1987 PMID: 3621454 DOI: 10.1007/bf00252950
Source DB: PubMed Journal: Cancer Chemother Pharmacol ISSN: 0344-5704 Impact factor: 3.333