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• W2617783977 abstract "Sleeping sickness is an infectious disease that is caused by the protozoan parasite Trypanosoma brucei. The second stage of the disease is characterised by the parasites entering the brain. It is therefore important that sleeping sickness therapies are able to cross the blood-brain barrier. At present, only three medications for chemotherapy of the second stage of the disease are available. As these trypanocides have serious side effects and are difficult to administer, new and safe anti-trypanosomal brain-penetrating drugs are needed. For these reasons, the anti-glioblastoma drug temozolomide was tested in vitro for activity against bloodstream forms of T. brucei. The concentration of the drug required to reduce the growth rate of the parasites by 50% was 29.1 μM and to kill all trypanosomes was 125 μM. Importantly, temozolomide did not affect the growth of human HL-60 cells up to a concentration of 300 μM. Cell cycle analysis revealed that temozolomide induced DNA damage and subsequent cell cycle arrest in trypanosomes exposed to the compound. As drug combination regimes often achieve greater therapeutic efficacy than monotherapies, the interactions of temozolomide with the trypanocides eflornithine and melarsoprol, respectively, was determined. Both combinations were found to produce an additive effect. In conclusion, these results together with well-established pharmacokinetic data provide the basis for in vivo studies and potentially for clinical trials of temozolomide in the treatment of T. brucei infections and a rationale for its use in combination therapy, particularly with eflornithine or melarsoprol." @default.
• W2617783977 created "2017-06-05" @default.
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• W2617783977 date "2017-07-01" @default.
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• W2617783977 title "Front-line glioblastoma chemotherapeutic temozolomide is toxic to Trypanosoma brucei and potently enhances melarsoprol and eflornithine" @default.
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• W2617783977 doi "https://doi.org/10.1016/j.exppara.2017.05.006" @default.
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