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Toxoplasmosis congenital

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https://www.readbyqxmd.com/read/28339296/synthetic-parasites-a-successful-mucosal-nanoparticle-vaccine-against-toxoplasma-congenital-infection-in-mice
#1
Céline Ducournau, Thi Tl Nguyen, Rodolphe Carpentier, Isabelle Lantier, Stéphanie Germon, Flavien Précausta, Pierre-Jean Pisella, Hervé Leroux, Nathalie Van Langendonck, Didier Betbeder, Isabelle Dimier-Poisson
AIM: Development of protein vaccine to prevent congenital infection is a major public health priority. Our goal is the design of mucosal synthetic pathogen inducing protective immune responses against congenital toxoplasmosis. MATERIALS & METHODS: Mice were immunized intranasally, establishing pregnancy and challenging orally. Placental immune response, congenital infection, pup growth, parasitic load rates were studied. RESULTS: Pups born to vaccinated infected dams had significantly fewer brain cysts, no intraocular inflammation and normal growth...
March 24, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28316418/seroepidemiology-of-toxoplasma-gondii-infection-in-pregnant-women-in-west-iran-determined-by-elisa-and-pcr-analysis
#2
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/28288770/experimental-toxoplasma-gondii-infections-in-pigs-humoral-immune-response-estimation-of-specific-igg-avidity-and-the-challenges-of-reproducing-vertical-transmission-in-sows
#3
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/28254558/early-serum-biomarker-networks-in-infants-with-distinct-retinochoroidal-lesion-status-of-congenital-toxoplasmosis
#4
Thádia Evelyn de Araújo, Jordana Grazziela Coelho-Dos-Reis, Samantha Ribeiro Béla, Ana Carolina Aguiar Vasconcelos Carneiro, Anderson Silva Machado, Ludmila Melo Cardoso, Ágata Lopes Ribeiro, Michelle Hallais França Dias, Gláucia Manzan Queiroz Andrade, Daniel Vitor Vasconcelos-Santos, José Nélio Januário, Andréa Teixeira-Carvalho, Ricardo Wagner Almeida Vitor, Eloisa Amália Vieira Ferro, Olindo Assis Martins-Filho
The present study characterized the early changes in the serum chemokines/cytokine signatures and networks in infants with congenital-toxoplasmosis/(TOXO) as compared to non-infected-controls/(NI). TOXO were subgrouped according to the retinochoroidal lesion status as no-lesion/(NL), active-lesion/(ARL), active/cicatricial-lesion/(ACRL) and cicatricial-lesion/(CRL). The results showed that TOXO display prominent chemokine production mediated by IL-8/CXCL8, MIG/CXCL9, IP-10/CXCL10 and RANTES/CCL5. Additionally, TOXO is accompanied by mixed proinflammatory/regulatory cytokine pattern mediated by IL-6, IFN-γ, IL-4, IL-5 and IL-10...
February 28, 2017: Cytokine
https://www.readbyqxmd.com/read/28254246/congenital-toxoplasmosis
#5
Rahul Guha, Lauren Miley, Madison Aspiri, Radhika Dhamija
No abstract text is available yet for this article.
January 20, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28207736/congenital-toxoplasmosis-in-france-and-the-united-states-one-parasite-two-diverging-approaches
#6
Francois Peyron, Rima Mc Leod, Daniel Ajzenberg, Despina Contopoulos-Ioannidis, François Kieffer, Laurent Mandelbrot, L David Sibley, Hervé Pelloux, Isabelle Villena, Martine Wallon, Jose G Montoya
No abstract text is available yet for this article.
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28202794/evaluation-of-the-toxoplasma-elite-mgb%C3%A2-real-time-pcr-assay-for-the-diagnosis-of-toxoplasmosis
#7
Florence Robert-Gangneux, Marie-Pierre Brenier-Pinchart, Hélène Yera, Sorya Belaz, Emmanuelle Varlet-Marie, Patrick Bastien
Molecular diagnosis of congenital toxoplasmosis or disseminated toxoplasmosis is mainly based on PCR. The repeated DNA element rep529 has become the main DNA target used in most, whether laboratory-developed or commercial, PCR methods. In this multicenter study, we evaluated the Toxoplasma ELITe MGB® (Elitech®) commercial kit, by comparison with three reference quantitative PCR assays (RA) used in routine in three proficient laboratories of the French National Reference Center for Toxoplasmosis network, using Toxoplasma calibrated suspensions diluted to obtain a range of concentrations from 0...
February 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28187119/in-reply-sulfadoxine-pyrimethamine-combination-in-congenital-toxoplasmosis
#8
Damien Dupont, François Peyron
No abstract text is available yet for this article.
March 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28187118/sulfadoxine-pyrimethamine-combination-in-congenital-toxoplasmosis
#9
Cathy Chemla, Isabelle Villena
No abstract text is available yet for this article.
March 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28163699/a-systematic-review-of-in-vitro-and-in-vivo-activities-of-anti-toxoplasma-drugs-and-compounds-2006-2016
#10
REVIEW
Mahbobeh Montazeri, Mehdi Sharif, Shahabeddin Sarvi, Saeed Mehrzadi, Ehsan Ahmadpour, Ahmad Daryani
The currently available anti-Toxoplasma agents have serious limitations. This systematic review was performed to evaluate drugs and new compounds used for the treatment of toxoplasmosis. Data was systematically collected from published papers on the efficacy of drugs/compounds used against Toxoplasma gondii (T. gondii) globally during 2006-2016. The searched databases were PubMed, Google Scholar, Science Direct, ISI Web of Science, EBSCO, and Scopus. One hundred and eighteen papers were eligible for inclusion in this systematic review, which were both in vitro and in vivo studies...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28151845/high-frequency-of-bone-marrow-depression-during-congenital-toxoplasmosis-therapy-in-a-cohort-of-children-identified-by-neonatal-screening-in-minas-gerais-brazil
#11
Ericka Viana Machado Carellos, Juliana Queiroz de Andrade, Roberta Maia Castro Romanelli, Jacqueline Domingos Tibúrcio, José Nélio Januário, Daniel Vítor Vasconcelos-Santos, Rosângela Maria Figueiredo, Gláucia Manzan Queiroz de Andrade
BACKGROUND: There are few studies reporting frequency and control of adverse events associated with congenital toxoplasmosis treatment. The objective of this study is to describe treatment adherence and adverse hematologic events in a cohort of children identified with congenital toxoplasmosis in Minas Gerais, Brazil. METHODS: Children were treated with sulfadiazine, pyrimethamine and folinic acid and were evaluated clinically and by laboratory tests at regular intervals...
January 31, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28148555/targeting-toxoplasma-gondii-cpsf3-as-a-new-approach-to-control-toxoplasmosis
#12
Andrés Palencia, Alexandre Bougdour, Marie-Pierre Brenier-Pinchart, Bastien Touquet, Rose-Laurence Bertini, Cristina Sensi, Gabrielle Gay, Julien Vollaire, Véronique Josserand, Eric Easom, Yvonne R Freund, Hervé Pelloux, Philip J Rosenthal, Stephen Cusack, Mohamed-Ali Hakimi
Toxoplasma gondii is an important food and waterborne pathogen causing toxoplasmosis, a potentially severe disease in immunocompromised or congenitally infected humans. Available therapeutic agents are limited by suboptimal efficacy and frequent side effects that can lead to treatment discontinuation. Here we report that the benzoxaborole AN3661 had potent in vitro activity against T. gondii Parasites selected to be resistant to AN3661 had mutations in TgCPSF3, which encodes a homologue of cleavage and polyadenylation specificity factor subunit 3 (CPSF-73 or CPSF3), an endonuclease involved in mRNA processing in eukaryotes...
March 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28138769/molecular-and-virulence-characterization-of-toxoplasma-gondii-strains-isolated-from-humans-in-portugal
#13
Anabela Vilares, Maria João Gargaté, Idalina Ferreira, Susana Martins, João Paulo Gomes
Toxoplasma gondii is an apicomplexan parasite responsible for toxoplasmosis which infects all warm-blooded vertebrates, including mammals and birds. The majority of studies conducted in Europe have revealed that more than 80 % of strains isolated from human infections belong to genotype II, whereas genotypes I and III are responsible for a small number of cases. Atypical and recombinant strains are generally associated with more severe infections. In Portugal, there is a lack of data concerning genetic diversity as the classical typing studies in humans have never been performed...
March 2017: Parasitology Research
https://www.readbyqxmd.com/read/28138010/diagnosis-treatment-and-prevention-of-congenital-toxoplasmosis-in-the-united-states
#14
Yvonne A Maldonado, Jennifer S Read
No abstract text is available yet for this article.
February 2017: Pediatrics
https://www.readbyqxmd.com/read/28127354/dna-amplification-techniques-for-the-detection-of-toxoplasma-gondii-tissue-cysts-in-meat-producing-animals-a-narrative-review-article
#15
REVIEW
Farooq Riaz, Imran Rashid, Haroon Akbar, Wasim Shehzad, Saher Islam, Amna Arshad Bajwa, Khalid Saeed, Kamran Ashraf
BACKGROUND: Toxoplasma gondii is an intracellular parasite, which infects one-third population of world. Humans and animals acquire infection by ingesting oocytes from feces of cats or by meat of other animals having cysts that may lead to congenital, ocular or cephalic toxoplasmosis. Either it is important to detect T. gondii from meat of food animals from retail shops or directly at slaughterhouses, which is meant for export. METHODS: The current research was done without time limitation using such terms as follows: "Toxoplasma gondii", "Meat", "Tissue cyst", "PCR", "LAMP", "Screening" and "Immunological assay" alone or in combination, in English language...
October 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28126016/seroprevalence-of-toxoplasma-gondii-and-associated-risk-factors-among-hiv-infected-women-within-reproductive-age-group-at-mizan-aman-general-hospital-southwest-ethiopia-a-cross-sectional-study
#16
Ayalew Jejaw Zeleke, Yayehirad Alemu Melsew
BACKGROUND: Toxoplasmosis is serious in the case of immune suppression and prenatal transmission. In immunocompromised hosts, it is manifested primarily as a life-threatening condition, toxoplasmic encephalitis. Congenital toxoplasmosis results in abortion or congenitally acquired disorders which primarily affect the central nervous system. This study assessed seroprevalence of Toxoplasma gondii (T. gondii) infection and associated factors among HIV-infected women within the reproductive age group (18-49 years) at Mizan Aman General Hospital, Southwest Ethiopia...
January 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28118394/genetic-polymorphisms-and-phenotypic-profiles-of-sulfadiazine-resistant-and-sensitive-toxoplasma-gondii-isolates-obtained-from-newborns-with-congenital-toxoplasmosis-in-minas-gerais-brazil
#17
Letícia Azevedo Silva, João Luís Reis-Cunha, Daniella Castanheira Bartholomeu, Ricardo Wagner Almeida Vítor
BACKGROUND: Previous Toxoplasma gondii studies revealed that mutations in the dhps (dihydropteroate synthase) gene are associated with resistance to sulfonamides. Although Brazilian strains are genotypically different, very limited data are available regarding the susceptibility of strains obtained from human to sulfonamides. The aim of this study was to evaluate the efficacy of sulfadiazine (SDZ) against Brazilian isolates of T. gondii and verify whether isolates present polymorphisms in the dhps gene...
2017: PloS One
https://www.readbyqxmd.com/read/28042412/molecular-detection-and-genotypic-characterization-of-toxoplasma-gondii-in-paraffin-embedded-fetoplacental-tissues-of-women-with-recurrent-spontaneous-abortion
#18
Amir Abdoli, Abdolhossein Dalimi, Haleh Soltanghoraee, Fatemeh Ghaffarifar
BACKGROUND: Congenital toxoplasmosis is an important cause of spontaneous abortion worldwide. However, there is limited information on detection and genotypic characterization of Toxoplasma gondii (T. gondii) in women with recurrent spontaneous abortion (RSA). The aim of this study is the molecular detection and genotypic characterization of T. gondii in formalin-fixed, paraffin-embedded fetoplacental tissues (FFPTs) of women with RSA that have referred to the Avicenna Research Institute in Tehran, Iran...
January 2017: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/28030925/comparison-of-the-efficiency-of-two-commercial-kits-elfa-and-western-blot-in-estimating-the-phase-of-toxoplasma-gondii-infection-in-pregnant-women
#19
COMPARATIVE STUDY
Jacek Sroka, Angelina Wójcik-Fatla, Violetta Zając, Anna Sawczyn, Ewa Cisak, Jacek Karamon, Jacek Dutkiewicz, Iwona Bojar
Sera of 89 pregnant women were selected according to the results of ELFA IgM, IgG and avidity IgG, and tested with commercial tests IgM, IgG and avidity IgG Western Blot (WB) to compare the efficacy of both techniques in determining the phase of T. gondii infection. In total, 81 of 89 tested sera (91.0%) were classified as positive, both in the ELFA and WB tests for the presence of anti-Toxoplasma antibodies of class IgG, indicating a past infection, while the prevalence of anti-Toxoplasma positive reactions associated with the antibodies of class IgM indicating a recent infection was much lower - 31...
December 23, 2016: Annals of Agricultural and Environmental Medicine: AAEM
https://www.readbyqxmd.com/read/28028000/phylogeography-of-toxoplasma-gondii-points-to-a-south-american-origin
#20
Emilie Bertranpetit, Thibaut Jombart, Emmanuel Paradis, Hilda Pena, Jitender Dubey, Chunlei Su, Aurélien Mercier, Sébastien Devillard, Daniel Ajzenberg
Toxoplasma gondii, a protozoan found ubiquitously in mammals and birds, is the etiologic agent of toxoplasmosis, a disease causing substantial public health burden worldwide, including about 200,000 new cases of congenital toxoplasmosis each year. Clinical severity has been shown to vary across geographical regions, with South America exhibiting the highest burden. Unfortunately, the drivers of these heterogeneities are still poorly understood, and the geographical origin and historical spread of the pathogen worldwide are currently uncertain...
December 24, 2016: Infection, Genetics and Evolution
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