Early Kinetics of Toxoplasma gondii Infection in Mice Infected Orally with Cysts of an Avirulent Strain

1995 ◽  
Vol 81 (2) ◽  
pp. 327 ◽  
Author(s):  
Marie Helene Sumyuen ◽  
Yves Jean Francois Garin ◽  
Francis Derouin
Nutrients ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 2137 ◽  
Author(s):  
Choi ◽  
Lee ◽  
Lee ◽  
Park ◽  
Lee ◽  
...  

Omega-3 polyunsaturated fatty acids (ω3-PUFAs) have potential protective activity in a variety of infectious diseases, but their actions and underlying mechanisms in Toxoplasma gondii infection remain poorly understood. Here, we report that docosahexaenoic acid (DHA) robustly induced autophagy in murine bone marrow-derived macrophages (BMDMs). Treatment of T. gondii-infected macrophages with DHA resulted in colocalization of Toxoplasma parasitophorous vacuoles with autophagosomes and reduced intracellular survival of T. gondii. The autophagic and anti-Toxoplasma effects induced by DHA were mediated by AMP-activated protein kinase (AMPK) signaling. Importantly, BMDMs isolated from Fat-1 transgenic mice, a well-known animal model capable of synthesizing ω3-PUFAs from ω6-PUFAs, showed increased activation of autophagy and AMPK, leading to reduced intracellular survival of T. gondii when compared with wild-type BMDMs. Moreover, Fat-1 transgenic mice exhibited lower cyst burden in the brain following infection with the avirulent strain ME49 than wild-type mice. Collectively, our results revealed mechanisms by which endogenous ω3-PUFAs and DHA control T. gondii infection and suggest that ω3-PUFAs might serve as therapeutic candidate to prevent toxoplasmosis and infection with other intracellular protozoan parasites.


2018 ◽  
Vol 1 (19) ◽  
pp. 16
Author(s):  
Mihai Mitran ◽  
Octavia Velicu ◽  
Roberta Ciobanu ◽  
Diana-Elena Comandașu ◽  
Elvira Brătilă

Author(s):  
Aishah E. Albalawi ◽  
Abdullah D. Alanazi ◽  
Mohamed S. Alyousif ◽  
Azadeh Sepahvand ◽  
Katrin Ebrahimi ◽  
...  

2021 ◽  
Vol 153 ◽  
pp. 104764
Author(s):  
Samira Dodangeh ◽  
Mahdi Fasihi-Ramandi ◽  
Ahmad Daryani ◽  
Reza Valadan ◽  
Hossein Asgarian-Omran ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kareem Hatam-Nahavandi ◽  
Rafael Calero-Bernal ◽  
Mohammad Taghi Rahimi ◽  
Abdol Sattar Pagheh ◽  
Mehdi Zarean ◽  
...  

AbstractFelidae as definitive hosts for Toxoplasma gondii play a major role in transmission to all warm-blooded animals trough oocysts dissemination. Therefore the current comprehensive study was performed to determine the global status of T. gondii infection in domestic and wild felids aiming to provide comprehensive data of interest for further intervention approaching the One Health perspective. Different databases were searched by utilizing particular key words for publications related to T. gondii infecting domestic and wild feline host species, worldwide, from 1970 to 2020. The review of 337 reports showed that the seroprevalence of T. gondii in domestic cats and wild felids was estimated in 37.5% (95% CI 34.7–40.3) (I2 = 98.3%, P < 0.001) and 64% (95% CI 60–67.9) (I2 = 88%, P < 0.0001), respectively. The global pooled prevalence of oocysts in the fecal examined specimens from domestic cats was estimated in 2.6% (95% CI 1.9–3.3) (I2 = 96.1%, P < 0.0001), and that in fecal samples from wild felids was estimated in 2.4% (95% CI 1.1–4.2) (I2 = 86.4%, P < 0.0001). In addition, from 13,252 examined soil samples in 14 reviewed studies, the pooled occurrence of T. gondii oocysts was determined in 16.2% (95% CI 7.66–27.03%). The observed high rates of anti-T. gondii antibodies seroprevalence levels and oocyst excretion frequency in the felids, along with soil (environmental) contamination with oocysts may constitute a potential threat to animal and public health, and data will result of interest in further prophylaxis programs.


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