PERFORMANCE OF A WESTERN IMMUNOBLOT ASSAY TO DETECT SPECIFIC ANTI-TOXOPLASMA GONDII IGG ANTIBODIES IN HUMAN SALIVA

2005 ◽  
Vol 91 (3) ◽  
pp. 561-563 ◽  
Author(s):  
Angelika Stroehle ◽  
Katja Schmid ◽  
Ivo Heinzer ◽  
Arunasalam Naguleswaran ◽  
Andrew Hemphill
Keyword(s):  
Toxoplasma Gondii ◽  
Human Saliva ◽  
Igg Antibodies ◽  
Immunoblot Assay ◽  
Western Immunoblot

Prevalence of Toxoplasma gondii and Toxocara canis among Myositis Patients in Southwest of Iran

2019 ◽  
Vol 20 ◽  
Author(s):  
Jasem Saki ◽  
Karim Mowla ◽  
Reza Arjmand ◽  
Forough Kazemi ◽  
Somayeh Fallahizadeh
Keyword(s):  
Toxoplasma Gondii ◽  
Nested Pcr ◽  
Healthy Subjects ◽  
Toxocara Canis ◽  
Control Group ◽  
Igg Antibodies ◽  
Healthy Individuals ◽  
High Prevalence ◽  
Acute Toxoplasmosis ◽  
Southwest Of Iran

Introduction: Parasitic myositis is caused by some parasites such as T. gondii and T. canis. So, the aim of the study was to evaluate the prevalence T. gondii and T. canis in patients with myositis and healthy individuals. Methods: A total of 108 samples were randomly selected as the control (54 healthy individuals) and test (54 myositis patients) groups. IgG and IgM antibodies against T. gondii and IgG antibodies against T. canis were measured by the ELISA. The detection of chronic and acute toxoplasmosis was performed by the ELISA IgG avidity. The presence of T. gondii in blood was evaluated by the nested-PCR. Results: Of 108, 33 (30.6%) cases were detected positive for IgG against T. gondii that 19 (35.2%) and 14 (25.9%) were observed in myositis patients and healthy individuals, respectively (P=0.296). Of 19 positive cases, 12 (63.2%) and 7 (36.8%) cases were detected as chronic and acute toxoplasmosis, respectively, while, all positive cases in the control group had chronic toxoplasmosis (P=0.013). One (1.9%) sample was detected positive for anti- Toxoplasma gondii IgM and two (3.7%) samples were found positive for IgG against T. canis by the ELISA that these positive cases were observed only in myositis patients (P=1.000 P=0.495, respectively). B1 T. gondii gene was amplified in 12 (63.2%) and 1 (7.1%) in myositis patients and healthy subjects (P=0.001). Conclusions: Our findings showed that there was a relatively high prevalence of acute toxoplasmosis in myositis patients in comparison with the control subjects in southwest of Iran.

scholarly journals Recombinant MAG1 Protein of Toxoplasma gondii as a Diagnostic Antigen

2015 ◽  
Vol 64 (1) ◽  
pp. 55-59 ◽  
Author(s):  
JUSTYNA M. GATKOWSKA ◽  
BOŻENA DZIADEK ◽  
JAROSŁAW DZIADEK ◽  
KATARZYNA DZITKO ◽  
HENRYKA DŁUGOŃSKA
Keyword(s):  
Toxoplasma Gondii ◽  
Full Length ◽  
Specific Marker ◽  
Igg Antibodies ◽  
Diagnostic Antigen ◽  
Human Sera ◽  
Diagnostic Usefulness ◽  
Native Antigen

The aim of this study was to evaluate the potential diagnostic usefulness of the full-length recombinant Toxoplasma gondii MAG1 protein by determining the levels of specific IgM and IgG antibodies in mouse and human sera obtained from individuals with acute and chronic toxoplasmosis. The obtained results revealed that IgG antibodies against MAG1 are a sensitive and specific marker of T. gondii infection since the protein was recognized by both mouse and human sera, 100% and 94.3%, respectively, rendering the full-length rMAG1 a prospective alternative for the polyvalent native antigen (TLA).

scholarly journals Evolution of IgG antibody response against Toxoplasma gondii tissue cyst in acute and chronic human infections

1998 ◽  
Vol 40 (2) ◽  
pp. 77-84 ◽  
Author(s):  
Margarita VILLAVEDRA ◽  
Hernán CAROL ◽  
Alberto NIETO
Keyword(s):  
Toxoplasma Gondii ◽  
Acute Infection ◽  
Chronic Phase ◽  
Tissue Cyst ◽  
Specific Response ◽  
Igg Antibodies ◽  
Igg Antibody ◽  
Wide Range ◽  
Toxoplasmic Infection ◽  
Human Infections

The recognition profile of the tissue cysts antigens by IgG antibodies was studied during acute and chronic human toxoplasmic infection. Thus the IgG response against Toxoplasma gondii was investigated by immunoblotting in two patients accidentally infected with the RH strain as well as in group of naturally infected patients at acute and chronic phase. There was an overall coincidence of molecular mass among antigens of tachyzoites and tissue cysts recognized by these sera, however, they appear not to be the same molecules. The response against tissue cysts starts early during acute infection, and the reactivity of antibodies is strong against a wide range of antigens. Six bands (between 82 and 151 kDa) were exclusively recognized by chronic phase sera but only the 132 kDa band was positive in more than 50% of the sera analysed. A mixture of these antigens could be used to discriminate between the two infection phases. The most important antigens recognized by the acute and the chronic phase sera were 4 clusters in the ranges 20-24 kDa, 34-39 kDa, 58-80 kDa and 105-130 kDa as well as two additional antigens of 18 and 29 kDa. Both accidentally infected patients and some of the naturally infected patients showed a weak specific response against tissue cyst antigens.

Investigation of anti-Toxoplasma gondii antibodies in patients with neoplasia

2004 ◽  
Vol 53 (12) ◽  
pp. 1183-1186 ◽  
Author(s):  
Süleyman Yazar ◽  
Ozan Yaman ◽  
Bülent Eser ◽  
Fevzi Altuntaş ◽  
Fatih Kurnaz ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Patient Group ◽  
Healthy Controls ◽  
Igg Antibodies ◽  
Human Igg ◽  
Igm Antibodies ◽  
Significant Difference

This study aimed to determine the prevalence of anti-Toxoplasma gondii antibodies in patients with neoplasia. One hundred and eight patients with neoplasia and 108 healthy controls were studied for the presence of anti-T. gondii antibodies using a micro ELISA and peroxidase-labelled anti-human IgG (rabbit) and IgM (goat). Anti-T. gondii IgG antibodies were detected in 68 (63.0 %) patients and in 21 (19.4 %) of the controls, which was a statistically significant difference. In addition, anti- T. gondii IgM antibodies were detected in seven (6.5 %) patients and in one (0.9 %) control. A high percentage of positivity for Toxoplasma antibodies in patients with neoplasia was detected. Therefore, parasitological surveys of this patient group should be periodically performed.

Regional seroprevalence of Toxoplasma gondii antibodies in feral and stray cats (Felis catus) from Tasmania

2014 ◽  
Vol 62 (4) ◽  
pp. 272 ◽  
Author(s):  
Bronwyn A. Fancourt ◽  
Robert B. Jackson
Keyword(s):  
Toxoplasma Gondii ◽  
Wildlife Conservation ◽  
Protozoan Parasite ◽  
Felis Catus ◽  
Rapid Decline ◽  
Tasmanian Devil ◽  
Igg Antibodies ◽  
Feral Cat ◽  
Modified Agglutination Test ◽  
Stray Cats

Toxoplasma gondii is a cosmopolitan protozoan parasite of felids that also has significant implications for the health of wildlife, livestock and humans worldwide. In Australia, feral, stray and domestic cats (Felis catus) are the most important definitive host of T. gondii as they are the only species that can excrete the environmentally resistant oocysts that provide a major source of infection for mammals and birds. In Tasmania, the rapid decline of the Tasmanian devil (Sarcophilus harrisii) may allow an increase in feral cat abundance, thereby increasing the risk of T. gondii infection to a range of susceptible wildlife species. At present, there is scant information on the prevalence of T. gondii infection in feral cat populations across Tasmania. We tested feral cats from 13 regions across Tasmania for the presence of T. gondii–specific IgG antibodies using a modified agglutination test. Results were combined with serosurveys from three previous studies to enable a comparison of seroprevalence among 14 regions across Tasmania. We found that 84.2% (224 of 266) of cats tested positive for T. gondii IgG antibodies. This is among the highest rates of prevalence recorded from Australia, and significantly higher than for most other countries. Adult cats had higher seroprevalence than kittens but there was no difference between sexes. In Tasmania, seroprevalence was high in 12 of 14 regions (range: 79.3–100.0%), with only two regions (Tasman Island and Southern Tasmania) recording significantly lower seroprevalence (≤50%). This suggests a high risk of infection across Tasmania, and has significant implications for wildlife conservation should feral cat abundance increase with the ongoing declines in Tasmanian devils.

Detection of IgG antibodies to Neospora caninum and Toxoplasma gondii in dogs examined in a veterinary hospital from Brazil

2001 ◽  
Vol 98 (4) ◽  
pp. 239-245 ◽  
Author(s):  
T.W.P. Mineo ◽  
D.A.O. Silva ◽  
G.H.N. Costa ◽  
A.C.B. von Ancken ◽  
L.H. Kasper ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Neospora Caninum ◽  
Igg Antibodies ◽  
Veterinary Hospital

Toxoplasma gondii: detection of antibodies in human saliva and serum

1994 ◽  
Vol 16 (1) ◽  
pp. 43-50 ◽  
Author(s):  
A. H. HAJEER ◽  
A. H. BALFOUR ◽  
ANN MOSTRATOS ◽  
BARBARA CROSSE
Keyword(s):  
Toxoplasma Gondii ◽  
Human Saliva

Decreased prevalence and age-specific risk factors for Toxoplasma gondii IgG antibodies in The Netherlands between 1995/1996 and 2006/2007

2010 ◽  
Vol 139 (4) ◽  
pp. 530-538 ◽  
Author(s):  
A. HOFHUIS ◽  
W. VAN PELT ◽  
Y. T. H. P. VAN DUYNHOVEN ◽  
C. D. M. NIJHUIS ◽  
L. MOLLEMA ◽  
...  
Keyword(s):  
Risk Factors ◽  
Toxoplasma Gondii ◽  
The Netherlands ◽  
Urban Areas ◽  
Marked Decrease ◽  
Congenital Toxoplasmosis ◽  
Reproductive Age ◽  
Igg Antibodies ◽  
Women Of Reproductive Age ◽  
Occupational Contact

SUMMARYTo estimate the change in the seroprevalence and risk factors for toxoplasmosis in The Netherlands, a study was conducted in the general population in 2006/2007, similarly designed as a previous study in 1995/1996. Testing 5541 sera for IgG antibodies against Toxoplasma gondii showed a marked decrease of the overall seroprevalence to 26·0% [95% confidence interval (CI) 24·0–28·0], compared to 40·5% (95% CI 37·5–43·4) in 1995/1996. In women of reproductive age the seroprevalence decreased from 35·2% (95% CI 32·9–38·6) in 1995/1996 to 18·5% (95% CI 16·2–20·7) in 2006/2007, leaving the majority of pregnant women susceptible to primary infection with T. gondii and their babies to congenital toxoplasmosis. In participants aged ⩾20 years, Toxoplasma seropositivity was associated with living in the Northwest, living in urban areas, low educational level, consumption of raw pork, keeping a cat, and not having occupational contact with clients or patients. For younger participants, risk factors were keeping sheep or cattle, consumption of raw unwashed vegetables and putting sand in the mouth.

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