Toxoplasma gondii in the semen of rams

Spence, JB; Cp, Beattie; Faulkner, John; Henry, L.; Watson, W.A.

doi:10.1136/vr.102.2.38

Cited by 23 publications

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“…Toxoplasma in semen of experimentally infected rams was first reported by Spence et al (1978). Later, contaminated semen samples from dogs, rats and rams experimentally infected to the parasite were also confirmed by bioassay and PCR methods (Arantes et al 2009;Dass et al 2011;Lopes et al 2009).…”

Section: Discussionmentioning

confidence: 90%

“…In addition, the transmission may occur through blood transfusion, organ transplant, drinking of milk ). Spence et al (1978) noticed presence of the protozoan in semen of rams. The presence of the parasite has also been confirmed by bioassays, immunohistochemistry and PCR methods in semen of male dogs and rams experimentally infected with T. gondii (Vyas 2013).…”

Section: Introductionmentioning

confidence: 98%

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Toxoplasma gondii: sexual transmission in mice

et al. 2013

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This study was performed to evaluate sexual transmission of Toxoplasma gondii in mice. RH strain tachyzoites were intraperitoneally inoculated into 10 Balb/C male mice and after 48 h, their semen were collected from epididymis and examined by giemsa staining and PCR. Twenty Balb/C female mice mated with four infected male mice four times and any mating time was 48 h whilst 20 female control mice mated with four uninfected male mice for 8 days. Female mate choice was assessed using a threechambered cage. Four female mice were placed in a central chamber and in one side of it, two infected male mice were kept and in other side, two naïve male mice were placed. Due each quarter, every of the female movement was reported and then the female was replaced to middle chamber. Besides on the detection of DNA and whole parasite in semen, no abortion and death was seen in female mice. Pregnancy was seen only 4 out of 20 female mice which mated with infected males while 17 pregnancies were seen from 20 control female mice (P value = 0.0001). No statistical significant was seen in female mate choice between naïve male (45 movement) and infected male (36 movement). This study showed that toxoplasmosis could not transmit to female mice and their offspring due to mating and the parasite had not effect on female mate choice. It seems that infected male mice cannot entirely mate with females due to reduction of male weapon and body size, physiological vigor and energy.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 98%

Toxoplasma gondii: sexual transmission in mice

et al. 2013

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“…A ocorrência de formas infectantes de Toxoplasma gondii já foi anteriormente demonstrada no sêmen de humanos infectados (Martinez-Garcia et al 1996), bovinos (Scarpelli et al 2009), suínos (Moura et al 2007), caninos (Arantes et al 2009), caprinos (Dubey & Sharma 1980) e ovinos (Spence et al 1978), originando discussões sobre outras possíveis formas de transmissão do parasito uma vez que se desconhece a importância relativa da via venérea.…”

Section: Discussionunclassified

“…Sabe-se que em ovinos, o primeiro relato desta eliminação, ocorreu nos dias 7, 14, 20, 25 e 32 p.i. (Spence et al 1978). Já Teale et al (1982) detectaram o parasita em 50% dos machos infectados apenas em duas ocasiões 16 e 26 dias p.i.…”

Section: Discussionunclassified

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Detecção de Toxoplasma gondii no sêmen de ovinos naturalmente infectados

et al. 2010

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O objetivo deste trabalho foi estudar a eliminação de Toxoplasma gondii no sêmen de carneiros naturalmente infectados. Foram utilizados 65 reprodutores submetidos inicialmente à pesquisa de anticorpos anti-T. gondii por meio da técnica de imunofluorescência indireta (IFI). Os carneiros sorologicamente positivos foram submetidos à colheita de sêmen para detecção do DNA de T. gondii. Na sorologia observaram-se 6/65 (9,2%) carneiros positivos, enquanto no PCR nested de sêmen 4/6 (66,6%) carneiros foram positivos. Conclui-se que a detecção, por meio da técnica da PCR nested, da forma proliferativa de T. gondii no sêmen de carneiros naturalmente infectados, reforça a necessidade de se pesquisar sobre a possibilidade da transmissão horizontal do parasito via sêmen na espécie ovina.

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New developments in health control

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New Techniques in Sheep Production

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Toxoplasma gondii in the semen of rams

Cited by 23 publications

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Toxoplasma gondii: sexual transmission in mice

Toxoplasma gondii: sexual transmission in mice

Detecção de Toxoplasma gondii no sêmen de ovinos naturalmente infectados

New developments in health control

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