The Cytotoxic Effect of Ciprofloxacin Laetrile Combination on Esophageal Cancer Cell Line.

OBJECTIVE: aim of this study was to examine the synergistic effect between the antibacterial drug ciprofloxacin and the natural compound laetrile on esophageal cancer cells, specifically focusing on their combined cytotoxic effect. METHODS: The combined cytotoxic effects of two alternative incubation durations (24 and 72 hours) were studied using an esophageal cancer cell line.  Ciprofloxacin, laetrile, and their combinations were tested at concentrations ranging from 1 to 1000 micrograms/milliliter, to enhance the safety of the combination, the concentrations of the combination constituents were reduced by half compared to when they are used individually, the combination index was then calculated to estimate the components' possible synergistic effects. RESULT: The results indicate that the combined cytotoxicity of ciprofloxacin and laetrile was greater than the cytotoxicity of either ciprofloxacin or laetrile alone, the combination cytotoxicity increased with higher concentrations and longer incubation periods, in other words, the cytotoxicity pattern of the combination was time-dependent (cell-cycle specific), and concentration dependent, (cell-cycle non-specific). CONCLUSION: The study found that the combination of ciprofloxacin and laetrile had a greater inhibitory effect on the growth of esophageal cancer cells compared to ciprofloxacin or laetrile alone. This suggests a synergistic effect between the components of the mixture, which can be attributed to a complementary mechanism between the ingredients in the combination.

Effect of Laetrile Vinblastine Combination on the Proliferation of the Hela Cancer Cell Line.

AIM: This study aimed to evaluate the inhibitory effect of laetrile, vinblastine, and their mixture on cervical cancer cells and probe potential synergistic consequences. METHOD: The study scrutinized the inhibitory impact of laetrile vinblastine and their mixture on the growth of human cervical cancer cells (Hela cancer cell line). The cells were incubated for 24, 48, and 72 hours with concentrations varying from 1 microgram to 10,000 micrograms of each substance. RESULT: study results showed, the combination of vinblastine and laetrile effectively reduced the viability of human cervical cancer cells. This effect was stronger than the individual cytotoxic effects of each compound. The results suggest that the cytotoxicity of the vinblastine and laetrile combination increases with higher concentrations of the compounds. Additionally, the study revealed a synergistic effect between the mixture ingredients, particularly at the lowest and highest concentrations during the 24 and 72-hour incubation periods. CONCLUSION: The antiproliferative effect of (the combination of laetrile and vinblastine) was greater than the antiproliferative effect of either compound used alone, suggesting a synergistic relationship between the two.