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Tropical Journal of Pharmaceutical Research
Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, Nigeria
ISSN: 1596-5996
EISSN: 1596-5996
Vol. 12, No. 6, 2013, pp. 989-995
Bioline Code: pr13125
Full paper language: English
Document type: Research Article
Document available free of charge

Tropical Journal of Pharmaceutical Research, Vol. 12, No. 6, 2013, pp. 989-995

 en In vitro Activity and Safety Assessment of New Synthesized Thiazolo Pyrimidine Derivatives Augmented with Albendazole against Echinococcus Multilocularis check for this species in other resources Metacestodes in Balb/C Mice
Bahashwan, Saleh A; Alharbi, Ahmed E; Ramadan, Mohamed A; Fayed, Ahmed A & Bahashwan, Ahmed A


Purpose: To synthesis a series of novel thiazolo pyrimidine derivatives and evaluate them in vitro for their safety and anthelmintic activity against E. multilocularis check for this species in other resources metacestodes using BALB/c mice.
Methods: A new series of substituted amino thiazole, hydrazinothiazole and thiazolo pyrimidine derivatives (2-6) were synthesized by reaction of compound 1 with potassium isothiocyanate to give the corresponding compound 2, which was used as starting material. The physicochemical characterization of these derivatives was carried out by nuclear magnetic resonance spectroscopy (1HNMR) and mass spectroscopy (MS).The purity of the compounds was determined by elemental analysis. Safety and anthelminthic activity of the compounds against E. multilocularis metacestodes was evaluated in vitro by i) viability assessment and relative abundance of 14-3-3 mRNA determination in E. multilocularis metacestodes-suspensions treated with 2, 5 and 10 µM concentrations of each compound separately. ii) bioassay at 15 weeks post-inoculation of mice by E. multilocularis suspensions-treated with 30 µM albendazole (ABZ), 10 µM thiazolopyrimidine derivative 5 (TPYDa) and a combination of both. Liver functions of all mice were tested before mice sacrifice.
Results: TPYDa emerged as the active anthelmintic compound of the series against E. multilocularis metacestodes viability (activity, 60 %) compared with ABZ (activity, 63 %). When TPYDa was combined with ABZ, the activity reached 86 %. No mortality was found and liver function was normal in all mice during the studies.
Conclusion: The compound, TPYDa, can serve as a lead molecule for further development to a clinically useful novel class of anthelmintic agents.

Thiazolopyrimidine; Synthesis; Echinococcosis; Mice; Chemotherapy

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