The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites

Background: Toxoplasmosis is one of the most common parasitic infections of humans and other mammals. This study was aimed to understand the mechanism of action of veterinary medicine-sulfachlo­ropyrazine (SPZ, 99.97%) against Toxoplasma gondii.Methods: T. gondii tachyzoites were soaked in PBS (as a...

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Main Authors: YB Zeng, H Dong, HY Han, LL Jiang, QP Zhao, SH Zhu, WJ Ma, J Cheng, B Huang
Format: Article
Language:English
Published: Tehran University of Medical Sciences 2013-03-01
Series:Iranian Journal of Parasitology
Subjects:
Online Access:http://ijpa.tums.ac.ir/index.php/ijpa/article/view/548/375
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author YB Zeng
H Dong
HY Han
LL Jiang
QP Zhao
SH Zhu
WJ Ma
J Cheng
B Huang
author_facet YB Zeng
H Dong
HY Han
LL Jiang
QP Zhao
SH Zhu
WJ Ma
J Cheng
B Huang
author_sort YB Zeng
collection DOAJ
description Background: Toxoplasmosis is one of the most common parasitic infections of humans and other mammals. This study was aimed to understand the mechanism of action of veterinary medicine-sulfachlo­ropyrazine (SPZ, 99.97%) against Toxoplasma gondii.Methods: T. gondii tachyzoites were soaked in PBS (as a control) or SPZ (250 mg/mL) for 2 h at 37 °C. After being processed, any ultrastructural changes of the tachyzoites that had occurred were observed by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM).Results: The tachyzoites from control groups with a uniform size had a smooth surface and intact cell or nuclear membranes. In addition, an oval-shaped nucleus, conoids and micronemes were also observed. By contrast, many parasites from the SPZ-treated groups were detrimentally affected by the treatment. Some appeared to be of the vacuolization in their cytoplasm, with the substantial reduc­tion in the number of dense granules and the blur of some organelles.Conclusion: The morphology and ultrastructure of tachyzoites can be affected significantly by SPZ, which might kill the parasite by inhibiting its energy metabolism, inducing apoptosis and damaging its structure. The study provides an experimental basis for further study on the mechanism of SPZ against T. gondii.
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spelling doaj.art-294d19390d4644f9b855fbd817ad215d2022-12-21T18:37:44ZengTehran University of Medical SciencesIranian Journal of Parasitology1735-70202008-238X2013-03-01817377The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii TachyzoitesYB ZengH DongHY HanLL JiangQP ZhaoSH ZhuWJ MaJ ChengB HuangBackground: Toxoplasmosis is one of the most common parasitic infections of humans and other mammals. This study was aimed to understand the mechanism of action of veterinary medicine-sulfachlo­ropyrazine (SPZ, 99.97%) against Toxoplasma gondii.Methods: T. gondii tachyzoites were soaked in PBS (as a control) or SPZ (250 mg/mL) for 2 h at 37 °C. After being processed, any ultrastructural changes of the tachyzoites that had occurred were observed by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM).Results: The tachyzoites from control groups with a uniform size had a smooth surface and intact cell or nuclear membranes. In addition, an oval-shaped nucleus, conoids and micronemes were also observed. By contrast, many parasites from the SPZ-treated groups were detrimentally affected by the treatment. Some appeared to be of the vacuolization in their cytoplasm, with the substantial reduc­tion in the number of dense granules and the blur of some organelles.Conclusion: The morphology and ultrastructure of tachyzoites can be affected significantly by SPZ, which might kill the parasite by inhibiting its energy metabolism, inducing apoptosis and damaging its structure. The study provides an experimental basis for further study on the mechanism of SPZ against T. gondii.http://ijpa.tums.ac.ir/index.php/ijpa/article/view/548/375SulfachloropyrazineToxoplasma GondiiTachyzoitesUltrastructure
spellingShingle YB Zeng
H Dong
HY Han
LL Jiang
QP Zhao
SH Zhu
WJ Ma
J Cheng
B Huang
The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites
Iranian Journal of Parasitology
Sulfachloropyrazine
Toxoplasma Gondii
Tachyzoites
Ultrastructure
title The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites
title_full The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites
title_fullStr The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites
title_full_unstemmed The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites
title_short The Ultrastructural Effects of Sulfachloropyrazine on Toxoplasma Gondii Tachyzoites
title_sort ultrastructural effects of sulfachloropyrazine on toxoplasma gondii tachyzoites
topic Sulfachloropyrazine
Toxoplasma Gondii
Tachyzoites
Ultrastructure
url http://ijpa.tums.ac.ir/index.php/ijpa/article/view/548/375
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