The time course of the specific antibody response by various ELISAs in pigs experimentally infected with Toxoplasma gondii

Lind, Peter; Haugegaard, John; Wingstrand, Anne; Henriksen, S. A.

doi:10.1016/s0304-4017(97)00010-1

Cited by 83 publications

(41 citation statements)

References 23 publications

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“…The mean IgG antibodies of the T. gondiiinfected animals was consistently higher when compared with that of the Neospora-infected group since days 14 until 77 pi The specific antibody profile of animals infected with the T. gondii RH strain was higher and persisted for longer compared to that from previous studies of pregnant cattle inoculated with nonvirulent strains of T. gondii (Beverley and Henry 1977;Munday 1978;Stalheim et al 1980;Gautam et al 1982;Dubey 1983Dubey , 1986. The difference could, therefore, be related to the strain used, since the more virulent strains of T. gondii can induce higher antibody responses than less virulent strains (Lind et al 1997;Jungersen et al 1999).…”

Section: Discussioncontrasting

confidence: 53%

Transplacental transmission in cattle: is Toxoplasma gondii less potent than Neospora caninum?

et al. 2011

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We compared the transplacental-transmission ability of Toxoplasma gondii and Neospora caninum in cattle. One uninfected pregnant heifer served as control, while three were inoculated with N. caninum K9WA strain and four with T. gondii RH strain at their midgestational period. Both infected groups showed clinical signs and antibodies either to N. caninum or T. gondii, while the control animal was normal. Two (50%) Toxoplasma dams aborted on days 6 and 11 postinoculation. T. gondii tachyzoites were found in various organs of those dams that had abortions but not in their fetuses. Two Neospora dams did not abort but gave birth to subclinically infected calves. The remaining two Toxoplasma dams and one from Neospora group became recumbent. Those two dams and their fetuses showed disseminated Toxoplasma DNA, but no Neospora DNA was found. Our findings suggest that maternal toxoplasmosis could be a cause of abortion and congenital toxoplasmosis in cattle, especially when they are infected by virulent strains.

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Section: Discussioncontrasting

confidence: 53%

Transplacental transmission in cattle: is Toxoplasma gondii less potent than Neospora caninum?

et al. 2011

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“…Although T. gondii has been isolated from seronegative hosts, the level of success in isolation has been shown to increase in proportion to increasing levels of anti-T. gondii antibody titres (Waldeland 1976;Dubey, Thulliez & Powell 1995;Lind, Haugegaard, Wingstrand & Henriksen 1997). Overall, there were no significant differences between the 1:50 and 1:100 titre groups and 1:200 and 1:400 titre groups in this study as indicated by the insignificant differences in the proportion of animals that were positive at each titre.…”

Section: Discussionmentioning

confidence: 99%

Seroprevalence of <i>Toxoplasma gondii</i> infection in goats and sheep in Zimbabwe

Hove

Lind²,

Mukaratirwa³

2005

Onderstepoort J Vet Res

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Seroprevalence rates of Toxoplasma gondii anti-antibodies in adult goats and sheep from different parts of Zimbabwe were determined. A total of 225 (67.9 %) of the 335 serum samples tested were positive for anti-T. gondii IgG antibodies with the indirect fluorescent antibody test. There were differences in antibody seroprevalences among communal land goats from the different agro-ecological zones (Natural regions IIb and III: 80 and 96.7 %, respectively; Natural region IV: 65.9 %; Natural region V: 45 %; and Natural region III had a significantly higher seroprevalence than IV and V. The highest seroprevalences found in Natural regions II b and III are likely to be linked to the existence of more households and hence the possibility of a higher concentration of domestic cats that increases the chances of environmental contamination with their faeces harbouring T. gondii oocysts. The seroprevalence rate in sheep from a large commercial farm (10 %) was significantly lower than that of sheep reared under the communal grazing system (80 %). Overall, significantly higher proportions of seropositive animals had antibody titres of 1:50 (34.2 % of 225) and 1:100 (44 % of 225) as compared to the 9.8 % and 12 % with antibody titres of 1:200 and > 1:400, respectively.

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“…A competition enzymelinked immunosorbent assay (ELISA) with a peroxidase-labeled monoclonal IgM anti-SAG1 antibody (Lind et al 1997) was used for the serological detection of T. gondii infection.…”

Section: Methodsmentioning

confidence: 99%

Cats and Goat Whey Associated with Toxoplasma gondii Infection in Pigs

Meerburg

Riel

Cornelissen

et al. 2006

Vector-Borne and Zoonotic Diseases

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In organic livestock production systems, farm-management factors are thought to play an important role in the on-farm prevalence of Toxoplasma gondii. Serological results and the results of an HACCP analysis were combined to determine important risk factors for the prevalence of this protozoan parasite. Mathematical analysis demonstrated that feeding goat whey to pigs and the presence of a high number of cats were positively correlated to T. gondii seroprevalence in pigs. Not covering roughage and the farmers' assumption that pigs can come into contact with cat feces also showed a positive relationship. In order to decrease the risk of T. gondii infecting their pigs, farmers should limit the access and number of cats on their farms and refrain from feeding goat whey to their pigs.

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The time course of the specific antibody response by various ELISAs in pigs experimentally infected with Toxoplasma gondii

Cited by 83 publications

References 23 publications

Transplacental transmission in cattle: is Toxoplasma gondii less potent than Neospora caninum?

Transplacental transmission in cattle: is Toxoplasma gondii less potent than Neospora caninum?

Seroprevalence of <i>Toxoplasma gondii</i> infection in goats and sheep in Zimbabwe

Cats and Goat Whey Associated with Toxoplasma gondii Infection in Pigs

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