نتایج جستجو برای: toxoplasma gondii

تعداد نتایج: 10498  

Journal: :International journal for parasitology 2009
John C Boothroyd

This article is an attempt to identify the most significant highlights of Toxoplasma research over the last 25 years. It has been a period of enormous progress and the top 25 most significant advances, in the view of this author, are described. These range from the bench to the bedside and represent a tremendous body of work from countless investigators. And, having laid out so much that has be...

Journal: :The Journal of parasitology 2004
J P Dubey D H Graham R W De Young E Dahl M L Eberhard E K Nace K Won H Bishop G Punkosdy C Sreekumar M C B Vianna S K Shen O C H Kwok J A Sumners S Demarais J G Humphreys T Lehmann

Toxoplasma gondii isolates can be grouped into 3 genetic lineages. Type I isolates are considered more virulent in outbred mice and have been isolated predominantly from clinical cases of human toxoplasmosis, whereas types II and III isolates are considered less virulent for mice and are found in humans and food animals. Little is known of genotypes of T. gondii isolates from wild animals. In t...

2015
Gao Wen

Toxoplasmosis is caused by the intracellular protozoan Toxoplasma gondii. It is anopportunistic zoonosis in warm-blooded animals and humans, with a worldwide distribution. Toxoplasma gondii dense granule protein 16 (TgGRA16) can modulate some functions in host cells and is considered a significant virulent factor of the parasite. The present study reports sequence variation in TgGRA16 gene amon...

Journal: :Journal of clinical images and medical case reports 2022

Background: Congenital toxoplasmosis results from vertical transmission of the Toxoplasma gondii parasite mother to fetus after a primary maternal infection. The risk fetal contamination is higher later term Conversely, severe infection decreases with term; third trimester infections are most often asymptomatic at birth.

Journal: :Journal of clinical microbiology 2009
H Yera D Filisetti P Bastien T Ancelle P Thulliez L Delhaes

Over the past few years, a number of new nucleic acid extraction methods and extraction platforms using chemistry combined with magnetic or silica particles have been developed, in combination with instruments to facilitate the extraction procedure. The objective of the present study was to investigate the suitability of these automated methods for the isolation of Toxoplasma gondii DNA from am...

Journal: :Parasitology 2006
A Skallová P Kodym D Frynta J Flegr

Toxoplasma gondii, a cosmopolitan protozoan parasite, is known to induce behavioural alterations in rodents and may exert an effect on human personality and behaviour. The mechanism of parasite-induced alterations in host behaviour has not been described, but it was hypothesized that development of Toxoplasma tissue cysts in the brain could affect the dopaminergic neuromodulatory system. In thi...

2014
Nora El-Tantawy Amira Taman Hend Shalaby

Toxoplasma gondii is a ubiquitous protozoan parasite that is estimated to infect one-third of the world’s human population causing a wide range spectrum of diseases. Reports on the prevalence of T. gondii infection among infertile females are scarce. This case-control study aimed to screen the infertile females and pregnant controls for Toxoplasma infection investigating a possible association ...

Journal: :Infection and immunity 1970
R Norrby

The host cell penetration of Toxoplasma gondii was studied with reference to synthesis of a penetration-enhancing factor and the penetrative capacity of the parasites during the various phases of the infectious cycle. HeLa cells as suspension or monolayer cultures were infected with Toxoplasma. After a lag phase shorter than 1 hr, there was a synthesis of penetration-enhancing factor demonstrab...

2008
Baha M. Latif Britt Jakubek

Flourescent antibody test (FAT) was applied to determine the cross-reactivities of monoclonal (mAb), polyclonal (pAb) antibodies to Neospora, Toxoplasma and Cryptosporidium and antisera from cattle naturally infected with Neospora canium against antigens from a number of sources. Both mAb and pAb to Neospora reacted strongly (FAT titre up to 2560) with the homologous antigens and demonstrated w...

2017
Bert J. D. van Enter Yee-Ling Lau Clare L. Ling Wanitda Watthanaworawit Yaowalark Sukthana Wenn-Chyau Lee François Nosten Rose McGready

Toxoplasma gondii primary infection in pregnancy is associated with poor obstetric outcomes. This study aimed to determine the seroprevalence of Toxoplasma infection in pregnant migrant and refugee women from Myanmar attending antenatal care in Thailand. A random selection of 199 residual blood samples from first antenatal screen in 2014-2015 was tested for Toxoplasma IgG and IgM antibodies. Se...

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