Electrocardiographic changes due to emetine therapy.
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Biomedical subjects
Publications and source records attributed to A Pain.
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New mixed function anticancer compounds as 2-chloroethylnitrosoureas of substituted naphthalimides represented by bromonap-NU 4a and chloronap-NU 4b, have been synthesized from 4-bromo- and 4-chloro-l,8-naphthalic anhydride, respectively following a 3-step process. Their chemical alkylating activity compared with nor -HN2 indicated that they possess greater alkylating activity than the latter. Their antitumour efficacies were assessed in vivo in two murine ascites tumours, namely Ehrlich ascites carcinoma (EAC) and Sarcoma-180 (S-180) by measuring the increase in median survival times (MST) of drug treated (T) over untreated control (C) mice. Two standard clinical drugs namely endoxan (cyclophosphamide) and 5-fluorouracil (5-FU) were used as positive controls for comparison. Both of them have displayed substantial and reproducible antitumoral activity in these tumours comparable with 5-FU. These were further screened in vitro in 6 different human tumour cell lines but no significant activity was observed in those lines.
Bromonapmustine 4a and chloronapmustine 4b, two new nitrogen mustards of substituted naphthalimides, have been synthesized as mixed-function anticancer compounds from 4-bromo- and 4-chloro-N-(2-hydroxyethyl)-naphthalimide respectively following a three-step process. Their chemical alkylating activity exceeded that of nor-HN2. Their antitumour efficacy were assessed in vivo in two murine ascites tumours, namely Ehrlich ascites carcinoma (EAC) and Sarcoma-180 (S-180) by measuring the increase in median survival times (MST) of drug treated (T) over untreated control (C) mice. Two standard clinical drugs, namely endoxan (cyclophosphamide) and 5-fluorouracil (5-FU) were used as positive controls for comparison. Both of them have displayed substantial and reproducible antitumoural activity in these tumours comparable with 5-FU. These compounds inhibit the synthesis of DNA and RNA in S-180 tumour cells. These were further screened in vitro in 3 different human tumour cell lines but no significant activity was observed in those lines.