One minute ultraviolet exposure inhibits Toxoplasma gondii tachyzoite replication and cyst conversion without diminishing host humoral-mediated immune response.

Exp Parasitol

Division of Neurobiology, Department of Psychiatry, Johns Hopkins University, 600 North Wolfe Street, Baltimore, MD 21287, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University, 600 North Wolfe Street, Baltimore, MD 21287, USA; Department of Molecular and Comparative Pathobiology, Johns Hopkins University, 600 North Wolfe Street, Baltimore, MD 21287, USA; Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, 600 North Wolfe Street, Baltimore, MD 21287, USA.

Published: October 2014

AI Article Synopsis

  • Developed a UV exposure protocol that effectively inactivates Toxoplasma gondii tachyzoites in just 1 minute.
  • This treatment halted both parasite replication and cyst formation in laboratory settings as well as in mice, while still allowing for a strong IgG immune response.
  • The protocol could be utilized to explore how the immune response affects changes in rodent behavior after T. gondii infection.

Article Abstract

We developed a protocol to inactivate Toxoplasma gondii (T. gondii) tachyzoites employing 1 min of ultraviolet (UV) exposure. We show that this treatment completely inhibited parasite replication and cyst formation in vitro and in vivo but did not affect the induction of a robust IgG response in mice. We propose that our protocol can be used to study the contribution of the humoral immune response to rodent behavioral alterations following T. gondii infection.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4435842PMC
http://dx.doi.org/10.1016/j.exppara.2014.08.001DOI Listing

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