keyword
MENU ▼
Read by QxMD icon Read
search

Toxoplasmosis gondii

keyword
https://www.readbyqxmd.com/read/28344403/toxoplasma-gondii-infection-in-meat-animals-from-africa-systematic-review-and-meta-analysis-of-sero-epidemiological-studies
#1
Aretas Babatoundé Nounnagnon Tonouhewa, Yao Akpo, Philippe Sessou, Camus Adoligbe, Eric Yessinou, Yaovi Gildas Hounmanou, Marc Napoléon Assogba, Issaka Youssao, Souaïbou Farougou
AIM: Toxoplasma gondii is an ubiquitous apicomplexan parasite which causes toxoplasmosis in humans and animals. Felids especially cats are definitive hosts and almost all warm-blooded mammals, including livestock and human can serve as intermediate hosts. Food animals can be reservoirs for T. gondii and act as one of the sources for parasite transmission to humans. The objective of this study is to collect serological data on the prevalence of anti-T. gondii antibody, and risk factors for certain food animals from Africa to provide a quantitative estimate of T...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28343955/comparison-of-commercial-elisa-tests-for-the-detection-of-toxoplasma-antibodies-in-the-meat-juice-of-naturally-infected-pigs
#2
Elina Felin, Anu Näreaho, Maria Fredriksson-Ahomaa
Toxoplasmosis is a globally distributed protozoal zoonosis. Pigs are considered an important reservoir of Toxoplasma gondii and pork a major infection source of human toxoplasmosis. ELISA methods are commonly used diagnostic tools for detecting Toxoplasma infections. They are also used for slaughterhouse-based serological monitoring of toxoplasmosis in pigs to identify positive farms. The methods used are non-standardised with varying sensitivity and specificity. In our study, four commercial ELISA tests for the detection of Toxoplasma antibodies in the meat juice of slaughter pigs were compared with a modified agglutination test (MAT) as a reference...
March 12, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28331073/stability-and-function-of-a-putative-microtubule-organizing-center-in-the-human-parasite-toxoplasma-gondii
#3
Jacqueline M Leung, Yudou He, Fangliang Zhang, Yu-Chen Hwang, Eiji Nagayasu, Jun Liu, John M Murray, Ke Hu
The organization of the microtubule cytoskeleton is dictated by microtubule nucleators or organizing centers.  Toxoplasma gondii, an important human parasite, has an array of 22 regularly spaced cortical microtubules stemming from a hypothesized organizing center, the apical polar ring. Here, we examine the functions of the apical polar ring by characterizing two of its components, KinesinA and APR1, and discovered that its putative role in templating can be separated from its mechanical stability. Parasites that lack both KinesinA and APR1 (ΔkinesinAΔapr1) are capable of generating 22 cortical microtubules...
March 22, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28317026/toxoplasma-gondii-ap2ix-4-regulates-gene-expression-during-bradyzoite-development
#4
Sherri Huang, Michael J Holmes, Joshua B Radke, Dong-Pyo Hong, Ting-Kai Liu, Michael W White, William J Sullivan
Toxoplasma gondii is a protozoan parasite of great importance to human and animal health. In the host, this obligate intracellular parasite persists as a tissue cyst that is imperceptible to the immune response and unaffected by current therapies. The tissue cysts facilitate transmission through predation and give rise to chronic cycles of toxoplasmosis in immunocompromised patients. Transcriptional changes accompany conversion of the rapidly replicating tachyzoites into the encysted bradyzoites, and yet the mechanisms underlying these alterations in gene expression are not well defined...
March 2017: MSphere
https://www.readbyqxmd.com/read/28316427/evaluation-of-toxoplasma-gondii-soluble-whole-and-excretory-secretary-antigens-for-diagnosis-of-toxoplasmosis-by-elisa-test
#5
S Pishkari, S Shojaee, H Keshavarz, M Salimi, M Mohebali
The present study was performed to compare the soluble, whole and excretory/secretary antigens of Toxoplasma gondii (RH strain) in diagnosis of toxoplasmosis by ELISA method. Tachyzoites of T. gondii, RH strain were injected in intra-peritoneal cavity of BALB/c mice, after 4 days tachyzoites were harvested by peritoneal washing of the mice. For soluble antigen, exudates were centrifuged and sediment sonicated and then centrifuged at 4 °C, 1 h, supernatant collected and density of protein determined by Bradford method...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316418/seroepidemiology-of-toxoplasma-gondii-infection-in-pregnant-women-in-west-iran-determined-by-elisa-and-pcr-analysis
#6
Gholam Reza Ahmadpour, Behrouz Ezatpour, Ramtin Hadighi, Hormoz Oormazdi, Lame Akhlaghi, Fatemeh Tabatabaei, Mehdi Azami, Mozafar Mohammadi Nejad, Hossein Mahmoudvand
Congenital toxoplasmosis can lead to severe damage for the fetus and newborn. Considering that the seroepidemiology of Toxoplasma infection in the pregnant women is poorly studied in west of Iran, the main objective of this study was to estimate the seroprevalence and potential risk factors for congenital toxoplasmosis in Delfan, Iran. In this cross-sectional study, the serum samples obtained from pregnant women who were referred to health centers for routine monitoring of the pregnancy. Totally, 264 sera were screened for IgG and IgM anti-T...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28316413/detection-and-genotyping-of-toxoplasma-gondii-isolated-from-soil-in-ahvaz-southwest-of-iran
#7
J Saki, S Khademvatan, E Yousefi, M Tavalla, R Abdizadeh
To detection and genotype of Toxoplasma gondii isolated from soil in Ahvaz, southwest of Iran. Between August 2011 and May 2012 at different sites located in the area of the Ahvaz city south west Iran. A total of 200 soil samples were taken from different points of the region. Oocysts were recovered using the flotation method. Then, PCR reactions targeting the GRA6 gene were performed for specific T. gondii detection. The positive samples were studied by RFLP (random amplified fragment length polymorphism) using MseI enzymes to confirm the parasite linage...
March 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28290263/diagnosis-of-toxoplasmosis-in-pregnancy-evaluation-of-latex-protein-complexes-by-immnunoagglutination
#8
Leandro E Peretti, Verónica D G Gonzalez, Iván S Marcipar, Luis M Gugliotta
The aim of this work was to obtain a reagent based on latex particles for ruling out acute toxoplasmosis in pregnant women by immunoagglutination (IA). Latex-protein complexes (LPC) were previously synthesized coupling the recombinant protein of Toxoplasma gondii P22Ag and the homogenate of the parasite to latex particles with different size, chemical functionality and charge density. LPC were tested in IA assays against a panel of 72 pregnant women serum samples. Results were analysed through receiver operating characteristic curves, determining area under the curve (AUC), sensitivity, specificity positive and negative predictive values (PPV and NPV, respectively)...
March 14, 2017: Parasitology
https://www.readbyqxmd.com/read/28288770/experimental-toxoplasma-gondii-infections-in-pigs-humoral-immune-response-estimation-of-specific-igg-avidity-and-the-challenges-of-reproducing-vertical-transmission-in-sows
#9
Walter Basso, Felix Grimm, Maja Ruetten, Vitomir Djokic, Radu Blaga, Xaver Sidler, Peter Deplazes
Ten pregnant sows were experimentally inoculated per os with T. gondii in order to investigate vertical and galactogenic transmission of the parasite and the evolution and maturation of the specific IgG humoral response in the sows and piglets. Five seronegative sows received 10(4)T. gondii (CZ isolate clone H3) sporulated oocysts during late-pregnancy (Exp. 1), three sows received 10(4) oocysts during mid-pregnancy (Exp. 2) and three sows from Exp. 1 (and two seronegative sows) were re-inoculated with 10(5) oocysts during a further pregnancy (late-pregnancy) (Exp...
March 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28287391/seroprevalence-of-toxoplasma-gondii-in-domestic-pets-from-metropolitan-regions-of-panama
#10
Claudia Rengifo-Herrera, Edwin Pile, Anabel García, Alexander Pérez, Dimas Pérez, Felicia K Nguyen, Valli de la Guardia, Rima Mcleod, Zuleima Caballero
Toxoplasmosis is a worldwide zoonotic disease but information regarding domestic animals in Central America is scarce and fragmented. The aim of this study was to determine the seroprevalence of Toxoplasma gondii in domestic cats and dogs in different metropolitan regions of Panama. A total of 576 samples were collected; sera from 120 cats and 456 dogs were tested using a commercial indirect enzyme-linked immunosorbent assay (ELISA). The overall seroprevalence of IgG antibodies was 30.73%. There is high seroprevalence of T...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28286231/enhancing-immune-responses-to-a-dna-vaccine-encoding-toxoplasma-gondii-gra14-by-calcium-phosphate-nanoparticles-as-an-adjuvant
#11
Ehsan Ahmadpour, Shahabeddin Sarvi, Mohammad Bagher Hashemi Soteh, Mehdi Sharif, Mohammad Taghi Rahimi, Reza Valadan, Mohsen Tehrani, Alireza Khalilian, Mahbobeh Montazeri, Mahdi Fasihi-Ramandi, Ahmad Daryani
Several approaches have been used to improve the immunogenicity of DNA vaccines. In the current study, we constructed the plasmid encoding T. gondii dense granule 14 (GRA14) and investigated the immunological properties of calcium phosphate nanoparticles (CaPNs) as nano-adjuvant to enhance the protective efficacy of pcGRA14. BALB/c mice intramuscularly injected three times at two-week intervals and the immune responses were evaluated using lymphocyte proliferation assay, cytokine and antibody measurements, survival times, and parasite load of mice challenged with the virulent T...
March 9, 2017: Immunology Letters
https://www.readbyqxmd.com/read/28285515/seroprevalence-of-toxoplasma-gondii-among-hiv-patients-in-jahrom-southern-iran
#12
Hassan Rezanezhad, Fateme Sayadi, Enayatollah Shadmand, Seyed Dawood Mousavi Nasab, Hadi Rezaei Yazdi, Kavous Solhjoo, Akbar Kazemi, Monireh Maleki, Abbas Ahmadi Vasmehjani
Toxoplasma gondii is an important opportunistic agent especially in immunocompromised hosts and can cause significant morbidity and mortality. Hence, detection and monitoring of anti-Toxoplasma antibodies are of a great interest in HIV-infected patients. A study on the prevalence of toxoplasmosis and associated risk factors was carried out among HIV-infected patients in Jahrom, southern Iran. The prevalence of anti-Toxoplasma IgG antibodies was 21.1% in HIV-infected patients by ELISA. PCR was performed on all of the samples, and 1 of the blood samples was positively detected...
February 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28285512/seroprevalence-of-toxoplasma-gondii-infection-in-wild-boars-wild-rabbits-and-wild-chickens-in-hubei-province-china
#13
Houqiang Luo, Kun Li, Muhammad Shahzad, Hui Zhang, Yanfang Lan, Xiong Xiong
Toxoplasma gondii causes serious infection worldwide in humans and animals. In this study, the seroepidemiology of toxoplasmosis was investigated in wild boars (Sus scrofa) (n=377), wild rabbits (cape hare, Lapus capensis) (n=331), and wild chickens (red junglefwol, Gallus gallus) (n=571) in 4 forested and country sided area of Hubei province of China. For this, blood samples were collected and tested by indirect hemagglutination test (IHA). The seroprevalence was found to be 7.2%, 5.1%, and 12.6% in wild boars, rabbits, and chickens, respectively, with significant differences among these species...
February 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28285501/high-seroprevalence-of-toxoplasmosis-detected-by-rdt-among-the-residents-of-seokmo-do-island-in-ganghwa-gun-incheon-city-korea
#14
Yeong Hoon Kim, Jihoo Lee, Seongkyu Ahn, Tong-Soo Kim, Sung-Jong Hong, Chom-Kyu Chong, Hye-Jin Ahn, Ho-Woo Nam
Seroprevalence of Toxoplasma gondii infection among the residents of Seokmo-do (Island) in Ganghwa-gun, Incheon, Korea was surveyed for 4 years by a rapid diagnostic test (RDT) using recombinant fragment of major surface antigen (SAG1), GST-linker-SAG1A. Sera from 312, 343, 390, and 362 adult residents were collected on a yearly basis from 2010 to 2013, respectively. Total positive seroprevalence regardless of gender was 29.2, 35.3, 38.7, and 45.3% from 2010 to 2013, respectively. Positive seroprevalence in male adults was 43...
February 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28283010/-effects-of-azithromycin-and-chlorella-vulgaris-treatment-on-certain-cytokine-values-and-nk-cell-activity-in-an-acute-murine-toxoplasmosis-model
#15
Deniz Gözde Çelik Payçu, Özden Büyükbaba Boral
Toxoplasmosis is a common infection with a complicated treatment process. Azithromycin (AZT) is a macrolide antibiotic that can be effectively used in patients with cerebral and ocular toxoplasmosis and has fewer side effects. Chlorella vulgaris (CV), a single-cell green algae that contains nutrients and has various biological effects. CV extract (CVE) has been shown to have protective effects against infections via immune enhancement by increasing the cytotoxicity of NK cells, IL-12 and IFN-γ levels. The aim of this study was to investigate the protective effects of AZT and CV, individually and in combination, against acute toxoplasmosis in mice, and their effects on NK cell cytotoxixity, IL-12, IFN-γ, and IL-2 levels...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28280256/late-onset-cerebral-toxoplasmosis-after-allogeneic-hematopoietic-stem-cell-transplantation
#16
Ahmed M Khalaf, Mahmoud A Hashim, Mohammed Alsharabati, Kenneth Fallon, Joel K Cure, Peter Pappas, Shin Mineishi, Ayman Saad
BACKGROUND Toxoplasmosis is an uncommon but potentially fatal complication following allogeneic hematopoietic stem cell transplantation (HCT). Post-transplant toxoplasmosis is often a reactivation of prior infection and typically occurs within the first 6 months of transplant. Herein, we report that cerebral toxoplasmosis may occur 22 months after allogeneic hematopoietic stem cell transplantation. CASE REPORT We describe a case of cerebral toxoplasmosis that occurred 22 months after an allogeneic HCT while the patient was on aerosolized pentamidine for Pneumocystis jiroveci pneumonia (PCP) prophylaxis...
March 10, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28274286/galectins-expressed-differently-in-genetically-susceptible-c57bl-6-and-resistant-balb-c-mice-during-acute-ocular-toxoplasma-gondii-infection
#17
S-J Chen, Y-X Zhang, S-G Huang, F-L Lu
Ocular toxoplasmosis (OT) caused by Toxoplasma gondii is a major cause of infectious uveitis, however little is known about its immunopathological mechanism. Susceptible C57BL/6 (B6) and resistant BALB/c mice were intravitreally infected with 500 tachyzoites of the RH strain of T. gondii. B6 mice showed more severe ocular pathology and higher parasite loads in the eyes. The levels of galectin (Gal)-9 and its receptors (Tim-3 and CD137), interferon (IFN)-γ, IL-6 and IL-10 were significantly higher in the eyes of B6 mice than those of BALB/c mice; however, the levels of IFN-α and -β were significantly decreased in the eyes and CLNs of B6 mice but significantly increased in BALB/c mice after infection...
March 9, 2017: Parasitology
https://www.readbyqxmd.com/read/28266723/contribution-of-dopamine-neurotransmission-in-proconvulsant-effect-of-toxoplasma-gondii-infection-in-male-mice
#18
Jalal Babaie, Mohammad Sayyah, Pezhman Fard-Esfahani, Majid Golkar, Kourosh Gharagozli
Epilepsy is one of the most common neurologic disorders worldwide with no distinguishable cause in 60% of patients. One-third of world's population is infected with Toxoplasma gondii (T. gondii). This intracellular parasite has high tendency to excitable cells including neurons. We assessed seizure susceptibility and involvement of dopaminergic system in male mice with acute and chronic T. gondii infection. Mice were infected by intraperitoneal injection of T. gondii cysts. Acute and chronic stages of infection were determined by quantification of SAG1/BAG1 transcripts and level of repetitive REP-529 sequence in the brain of mice by real-time PCR...
March 7, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28263855/production-of-refolded-toxoplasma-gondii-recombinant-sag1-related-sequence-3-srs3-and-its-use-for-serodiagnosis-of-human-toxoplasmosis
#19
Abolfazl Mirzadeh, Geita Saadatnia, Majid Golkar, Jalal Babaie, Rahmah Noordin
SAG1-related sequence 3 (SRS3) is one of the major Toxoplasma gondii tachyzoite surface antigens and has been shown to be potentially useful for the detection of toxoplasmosis. This protein is highly conformational due to the presence of six disulfide bonds. To achieve solubility and antigenicity, SRS3 depends on proper disulfide bond formation. The aim of this study was to over-express the SRS3 protein with correct folding for use in serodiagnosis of the disease. To achieve this, a truncated SRS3 fusion protein (rtSRS3) was produced, containing six histidyl residues at both terminals and purified by immobilized metal affinity chromatography...
March 2, 2017: Protein Expression and Purification
https://www.readbyqxmd.com/read/28261175/immuno-efficacy-of-a-t-gondii-secreted-protein-with-an-altered-thrombospondin-repeat-tgspatr-as-a-novel-dna-vaccine-candidate-against-acute-toxoplasmosis-in-balb-c-mice
#20
Bin Zheng, Jianzu Ding, Xiaoheng Chen, Haijie Yu, Di Lou, Qunbo Tong, Qingming Kong, Shaohong Lu
Toxoplasma gondii (T.gondii) is distributed worldwide and infects most species of warm-blooded animals, including humans. Toxoplasmosis has serious consequences, especially in people with an impaired or immature immune system. Thus, an effective vaccine is urgently required. Secretory microneme proteins are essential for the adhesion and invasion of T. gondii. The gene encoding the microneme protein, T. gondii secreted protein with an altered thrombospondin repeat (TgSPATR), we constructed a recombinant eukaryotic plasmid, pVAX1-TgSPATR, as a DNA vaccine, injected it intramuscularly into BALB/c mice and evaluated the induced immune response...
2017: Frontiers in Microbiology
keyword
keyword
42533
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"