Abstract
Purpose
Pyrus boissieriana is a rich source of arbutin and has been used in herbal medicine to treat infectious diseases. This study aimed to investigate the effect of the arbutin-rich fraction of Pyrus boissieriana aerial parts on Toxoplasma gondii In Vitro and In Vivo.
Methods
An arbutin-rich fraction of P. boissieriana was prepared beforehand. Flow cytometry was used to evaluate the effect of different concentrations (1–512 µg/ml) of the P. boissieriana arbutin-rich fraction on Toxoplasma tachyzoites (RH strain). The cytotoxicity of the concentrations on the macrophage J774 cell line was also investigated by MTT assay. For In Vivo investigation, 4–6-week-old female mice infected with the RH strain of T. gondii were treated with different doses (16, 32, 64, 256, and 512 mg/kg) of the fraction using gavage.
Results
The highest and lowest lethality of the tachyzoites were 89.6% and 25.9% related to the concentrations of 512 µg/ml and 1 µg/ml, respectively, with an IC50 value of 18.1 µg/ml ± 0.37. The cytotoxicity test showed an IC50 value of 984.3 µg/ml ± 0.76 after 48 h incubation. The mean survival of mice at the lowest treated dose (16 mg/kg) was 6.6 days, and it was 15 days at the highest dose (512 mg/kg). The concentrations of 512, 256, 128, and 64 mg/kg of the fraction compared to the negative control (6.2 days mean survival) significantly increased the survival time of mice (P < 0.001, P = 0.009, P = 0.018, and P = 0.021, respectively).
Conclusion
The results showed that the arbutin-rich fraction of P. boissieriana is effective against T. gondii In Vitro and In Vivo and may be a reliable alternative to conventional treatment for toxoplasmosis, although further studies are necessary.
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Acknowledgements
This study was undertaken as an MD degree thesis for Meysam Gholami and Mojtaba Habibollahi and the work was supported by Shiraz University of Medical Sciences.
Funding
The study was financially supported by the office of the vice-chancellor for research of Shiraz University of Medical Sciences (Grant No. 21764).
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QA, AH, and APL Conceived and designed the experiments. MSB, SFP, MGh, and MH Performed the experiments. MSB and QA Analyzed and interpreted the data. QA Contributed reagents, materials, analysis tools, or data. The first draft of the manuscript was written by MSB and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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The current study was approved by the Ethical Committee of Shiraz University of Medical Sciences, Shiraz, Iran (ethical code: IR.SUMS.MED.REC.1400.038).
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Bahreini, M.S., Pourmohammadi, S.F., Gholami, M. et al. Anti-Toxoplasma In Vitro and In Vivo Activity of Pyrus boissieriana Arbutin-Rich Fraction. Acta Parasit. 69, 567–573 (2024). https://doi.org/10.1007/s11686-023-00759-x
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DOI: https://doi.org/10.1007/s11686-023-00759-x