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Toxoplasmosis congenital

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https://www.readbyqxmd.com/read/28728858/-dress-complicated-by-hemophagocytic-lymphohistiocytosis-in-an-infant-treated-for-congenital-toxoplasmosis
#1
S Rioualen, J Dufau, C Flatres, P Lavenant, L Misery, J-M Roué
BACKGROUND: Drug reaction with eosinophilia and systemic symptoms (DRESS) is a severe disease that may be complicated by hemophagocytic lymphohistiocytosis but this is rarely described in children. PATIENTS AND METHODS: We report the case of a 5-week old infant hospitalized in a pediatric intensive care unit for hemophagocytic lymphohistiocytosis with prolonged fever, splenomegaly, cytopenia, fibrinogen≤1.5g/L, ferritin≥500μg/L, and soluble IL-2 receptor≥2400U/mL...
July 17, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28720125/profiling-of-the-perturbed-metabolomic-state-of-mouse-spleen-during-acute-and-chronic-toxoplasmosis
#2
Xiao-Qing Chen, Chun-Xue Zhou, Hany M Elsheikha, Shuai He, Gui-Xue Hu, Xing-Quan Zhu
BACKGROUND: Toxoplasma gondii, a common opportunistic protozoan, is a leading cause of illness and mortality among immunosuppressed individuals and during congenital infections. Current therapeutic strategies for toxoplasmosis are not fully effective at curtailing disease progression in these cases. Given the parasite ability to influence host immunity and metabolism, understanding of the metabolic alterations in the host's immune organs during T. gondii infection may enhance the understanding of the molecular mechanisms that define the pathophysiology of T...
July 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28706518/immunization-with-toxoplasma-gondii-gra17-deletion-mutant-induces-partial-protection-and-survival-in-challenged-mice
#3
Jin-Lei Wang, Hany M Elsheikha, Wei-Ning Zhu, Kai Chen, Ting-Ting Li, Dong-Mei Yue, Xiao-Xuan Zhang, Si-Yang Huang, Xing-Quan Zhu
Toxoplasmosis remains a world-threatening disease largely because of the lack of a fully effective vaccine. Here, we created a ΔGRA17 mutant by disrupting the virulence factor GRA17 using CRISPR-Cas9 method. Then, we tested whether ΔGRA17 tachyzoites can be used as a live-attenuated vaccine against acute, chronic, and congenital Toxoplasma gondii infection in mice. Immune response evoked by ΔGRA17 immunization suggested a sequential Th1 and Th2 T cell response, indicated by high levels of Th1 and a mixed Th1/Th2 cytokines at 28 and 70 days after immunization, respectively...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28697120/association-of-parasite-load-levels-in-amniotic-fluid-with-clinical-outcome-in-congenital-toxoplasmosis
#4
Lidia Yamamoto, Lília S Targa, Laura M Sumita, Paulo T Shimokawa, Jonatas C Rodrigues, Kelly A Kanunfre, Thelma S Okay
OBJECTIVE: To correlate neonatal and infant clinical outcome with parasite load in amniotic fluid (AF). METHODS: We conducted a retrospective cohort study of 122 children whose mothers had toxoplasmosis during pregnancy. The children were monitored from birth to 12 months old. Stored AF samples were obtained at maternal diagnosis and tested by quantitative polymerase chain reaction. Gestational age at maternal infection, quantitative polymerase chain reaction results, neonatal anti-Toxoplasma gondii immunoglobulin (Ig) M, and clinical outcome at 12 months were correlated...
August 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28693432/seroprevalence-and-risk-factors-of-toxoplasma-gondii-infection-in-pregnant-women-from-bobo-dioulasso-burkina-faso
#5
Sanata Bamba, Mamoudou Cissé, Ibrahim Sangaré, Adama Zida, Souleymane Ouattara, Robert T Guiguemdé
BACKGROUND: Toxoplasmosis is one of the common worldwide parasitic zoonosis due to Toxoplasma gondii (T. gondii). Toxoplasmosis during pregnancy can result in fetal and neonatal death or various congenital defects. The aim of this study was to assess the seroprevalence and risk factors of T. gondii infection in pregnant women following antenatal care (ANC) services at Bobo Dioulasso. METHODS: A cross-sectional study was conducted enrolling a sample of 316 pregnant women attending ANC at centers for maternal and child health of Bobo-Dioulasso town from March 2013 to February 2014...
July 11, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28692640/congenital-toxoplasmosis-in-austria-prenatal-screening-for-prevention-is-cost-saving
#6
Andrea-Romana Prusa, David C Kasper, Larry Sawers, Evelyn Walter, Michael Hayde, Eileen Stillwaggon
BACKGROUND: Primary infection of Toxoplasma gondii during pregnancy can be transmitted to the unborn child and may have serious consequences, including retinochoroiditis, hydrocephaly, cerebral calcifications, encephalitis, splenomegaly, hearing loss, blindness, and death. Austria, a country with moderate seroprevalence, instituted mandatory prenatal screening for toxoplasma infection to minimize the effects of congenital transmission. This work compares the societal costs of congenital toxoplasmosis under the Austrian national prenatal screening program with the societal costs that would have occurred in a No-Screening scenario...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28676560/congenital-microcephaly-in-quebec-baseline-prevalence-risk-factors-and-outcomes-in-a-large-cohort-of-neonates
#7
Nathalie Auger, Caroline Quach, Jessica Healy-Profitós, Anne-Marie Lowe, Laura Arbour
OBJECTIVE: We assessed baseline prevalence, risk factors and outcomes of microcephaly in a large population of neonates. DESIGN: Retrospective cohort study. SETTING: All hospitals in the province of Quebec, Canada. PARTICIPANTS: 794 microcephalic and 1 944 010 non-microcephalic infants born between 1989 and 2012. MAIN OUTCOME MEASURES: Baseline prevalence of microcephaly and occurrence of other congenital anomalies...
July 4, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28673238/report-of-an-unsual-case-of-anophthalmia-and-craniofacial-cleft-in-a-newborn-with-toxoplasma-gondii-congenital-infection
#8
Gabriel Emmanuel Arce-Estrada, Valeria Gómez-Toscano, Carlos Cedillo-Peláez, Ana Luisa Sesman-Bernal, Vanessa Bosch-Canto, José Luis Mayorga-Butrón, José Antonio Vargas-Villavicencio, Dolores Correa
BACKGROUND: We present one unusual case of anophthalmia and craniofacial cleft, probably due to congenital toxoplasmosis only. CASE PRESENTATION: A two-month-old male had a twin in utero who disappeared between the 7(th) and the 14(th) week of gestation. At birth, the baby presented anophthalmia and craniofacial cleft, and no sign compatible with genetic or exposition/deficiency problems, like the Wolf-Hirschhorn syndrome or maternal vitamin A deficiency. Congenital toxoplasmosis was confirmed by the presence of IgM abs and IgG neo-antibodies in western blot, as well as by real time PCR in blood...
July 3, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28668985/toxoplasma-genotyping-in-congenital-toxoplasmosis-in-upper-egypt-evidence-of-type-i-strain
#9
Hanan E M Eldeek, Alzahraa Abdel Raouf Ahmad, Mohamed Ahmed El-Mokhtar, Abdel Rahman M M Abdel Kader, Ahmad M Mandour, Mahmoud Elhady M Mounib
Toxoplasma gondii has subpopulation structures in different geographical regions caused by less frequent sexual recombination, population sweeps, and biogeography. The majority of strains isolated in North America and Europe fall into one of three clonal lineages, referred to as types I, II, and III. So far, little is known about genetics of Toxoplasma strains in Africa. The present study aimed to determine the genotype of Toxoplasma strains obtained directly from trophoblastic/placental tissues of 29 complicated pregnant women using multilocus nested-PCR-RFLP technique depending on four independent genetic loci (5' SAG2 and 3' SAG2), SAG3, GRA6, and BTUB genes...
July 1, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28650970/point-of-care-testing-for-toxoplasma-gondii-igg-igm-using-toxoplasma-ict-igg-igm-test-with-sera-from-the-united-states-and-implications-for-developing-countries
#10
Ian J Begeman, Joseph Lykins, Ying Zhou, Bo Shiun Lai, Pauline Levigne, Kamal El Bissati, Kenneth Boyer, Shawn Withers, Fatima Clouser, A Gwendolyn Noble, Peter Rabiah, Charles N Swisher, Peter T Heydemann, Despina G Contopoulos-Ioannidis, Jose G Montoya, Yvonne Maldonado, Raymund Ramirez, Cindy Press, Eileen Stillwaggon, François Peyron, Rima McLeod
BACKGROUND: Congenital toxoplasmosis is a serious but preventable and treatable disease. Gestational screening facilitates early detection and treatment of primary acquisition. Thus, fetal infection can be promptly diagnosed and treated and outcomes can be improved. METHODS: We tested 180 sera with the Toxoplasma ICT IgG-IgM point-of-care (POC) test. Sera were from 116 chronically infected persons (48 serotype II; 14 serotype I-III; 25 serotype I-IIIa; 28 serotype Atypical, haplogroup 12; 1 not typed)...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28647172/infection-related-microcephaly-after-the-2015-and-2016-zika-virus-outbreaks-in-brazil-a-surveillance-based-analysis
#11
Wanderson Kleber de Oliveira, Giovanny Vinícius Araújo de França, Eduardo Hage Carmo, Bruce Bartholow Duncan, Ricardo de Souza Kuchenbecker, Maria Inês Schmidt
BACKGROUND: On Nov 11, 2015, the Brazilian Ministry of Health declared a Public Health Emergency of National Concern in response to an increased number of microcephaly cases, possibly related to previous Zika virus outbreaks. We describe the course of the dual epidemics of the Zika virus infection during pregnancy and microcephaly in Brazil up to Nov 12, 2016, the first anniversary of this declaration. METHODS: We used secondary data for Zika virus and microcephaly cases obtained through the Brazilian Ministry of Health's surveillance systems from Jan 1, 2015, to Nov 12, 2016...
June 21, 2017: Lancet
https://www.readbyqxmd.com/read/28640004/ocular-lesions-in-congenital-toxoplasmosis-in-santa-isabel-do-iva%C3%A3-paran%C3%A3-brazil
#12
Ana Paula Sanders, Tatiane Dos Santos, Cleusa KimieKoike Felipe, Maria Lucia Estevão, Caroni Cícero, Fernanda Evangelista, Carlos Alexandre Manrique, Angélica Sayuri Mizutani, Ana Lucia Falavigna-Guilherme
We verified clinical and psychopedagogic aspects of congenital cases with ocular sequelae, 13 years after toxoplasmosis outbreak in Santa Isabel do Ivaí, and current seroprevalence of this zoonosis in pregnant women. Audiologic and ophthalmologic evaluations were performed in congenital cases, in addition to collection of clinical and psychopedagogic data. In pregnant women, current seroprevalence was observed. Among affected teenagers, 2/5 are behind in school grade, 4/5 reported learning difficulties, requiring psychopedagogic monitoring, as well as ocular complaints...
June 17, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28629230/association-between-toxoplasma-gondii-types-and-outcomes-of-human-infection-a-meta-analysis
#13
Jing Xia, Xin-Yu Cheng, Xiao-Jun Wang, Hong-Juan Peng
The virulence and pathogenicity of various types of Toxoplasma gondii differ considerably in mice. Recent studies have claimed that similar phenomenon was observed in humans, but no relevant studies have been performed to validate this finding. In addition, reports showing association between a given T. gondii type and outcomes of human infection yielded conflicting results. To provide a more precise estimation of the association and a more reliable conclusion on this subject, we performed this meta-analysis...
June 20, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28629167/igg-avidity-test-in-congenital-toxoplasmosis-diagnoses-in-newborns
#14
Zulmirene Cardoso Fonseca, Isolina Maria Xavier Rodrigues, Natália Cruz E Melo, Juliana Boaventura Avelar, Ana Maria Castro, Mariza Martins Avelino
The goal of this study was to investigate the importance of IgG avidity testing in newborns (NBs) diagnosed with early congenital toxoplasmosis. We collected samples from 88 puerperae infected by Toxoplasma gondii (T. gondii) and their NBs (48 acutely-infected puerperae (AIP) and 40 chronically-infected puerperae (CIP)), from two public maternity hospitals in Goiania city, Goias, Brazil, from 2010 to 2015. Specific anti-T. gondii IgM and IgG serum levels and IgG avidity tests were evaluated using chemiluminescence...
June 18, 2017: Pathogens
https://www.readbyqxmd.com/read/28610938/toxoplasmosis-seroprevalence-in-pregnant-women-and-serological-and-molecular-screening-in-neonatal-umbilical-cord-blood
#15
Mahshad Shieh, Mojtaba Didehdar, Reza Hajihossein, Farzam Ahmadi, Zahra Eslamirad
Toxoplasmosis is a common zoonotic disease that can also be transmitted from the mother to the embryo, with the risk of congenital infection varying around the world. The aim of this study was to screen pregnant women and their neonates for toxoplasmosis by serologic and molecular methods and assess the impact of risk factors associated with toxoplasmosis on the rate of congenital infection. This study was conducted at a regional maternity hospital in Arak, the capital of the Markazi Province in Iran, during a period of six months...
June 10, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28609444/identification-of-compounds-that-suppress-toxoplasma-gondii-tachyzoites-and-bradyzoites
#16
Yuho Murata, Tatsuki Sugi, Louis M Weiss, Kentaro Kato
Drug treatment for toxoplasmosis is problematic, because current drugs cannot eradicate latent infection with Toxoplasma gondii and can cause bone marrow toxicity. Because latent infection remains after treatment, relapse of infection is a problem in both infections in immunocompromised patients and in congenitally infected patients. To identify lead compounds for novel drugs against Toxoplasma gondii, we screened a chemical compound library for anti-Toxoplasma activity, host cell cytotoxicity, and effect on bradyzoites...
2017: PloS One
https://www.readbyqxmd.com/read/28605518/public-health-impact-of-congenital-toxoplasmosis-and-cytomegalovirus-infection-in-belgium-2013-a-systematic-review-and-data-synthesis
#17
G Suzanne A Smit, Elizaveta Padalko, Jos Van Acker, Niel Hens, Pierre Dorny, Niko Speybroeck, Brecht Devleesschauwer
Congenital toxoplasmosis (CT) and cytomegalovirus infection (cCMV) may cause significant morbidity and even fetal or neonatal mortality. We aimed to quantify the disease burden of CT and cCMV in Belgium in terms of disability-adjusted life years (DALYs) and identify data gaps. The public health impact of CT and cCMV in Belgium in 2013 was 188 (95% uncertainty interval [UI], 43-419) and 1976 (95% UI, 757-4067) DALYs, respectively. The major data gaps identified were representative Belgian studies; information on important sequelae, intrauterine mortality, and termination of pregnancy; and late onset sequelae...
June 12, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28575919/zika-virus-infection-in-pregnant-women-and-microcephaly
#18
Geraldo Duarte, Antonio Fernandes Moron, Artur Timerman, César Eduardo Fernandes, Corintio Mariani Neto, Gutemberg Leão de Almeida Filho, Heron Werner Junior, Hilka Flavia Barra do Espírito Santo, João Alfredo Piffero Steibel, João Bortoletti Filho, Juvenal Barreto Borriello de Andrade, Marcelo Burlá, Marcos Felipe Silva de Sá, Newton Eduardo Busso, Paulo César Giraldo, Renato Augusto Moreira de Sá, Renato Passini Junior, Rosiane Mattar, Rossana Pulcineli Vieira Francisco
From the discovery of the Zika virus (ZIKV) in 1947 in Uganda (Africa), until its arrival in South America, it was not known that it would affect human reproductive life so severely. Today, damage to the central nervous system is known to be multiple, and microcephaly is considered the tip of the iceberg. Microcephaly actually represents the epilogue of this infection's devastating process on the central nervous system of embryos and fetuses. As a result of central nervous system aggression by the ZIKV, this infection brings the possibility of arthrogryposis, dysphagia, deafness and visual impairment...
May 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28558051/the-disease-burden-of-congenital-toxoplasmosis-in-denmark-2014
#19
Janna Nissen, Pikka Jokelainen, Christen Rune Stensvold, Chiara Trevisan, Josefine Fuchs, Kristoffer Sølvsten Burgdorf, Henrik Vedel Nielsen, Sara M Pires
BACKGROUND: Congenital toxoplasmosis (CT) causes a substantial disease burden worldwide. The aim of this study was to estimate the disease burden of CT in Denmark, a developed country with free public healthcare and nationwide data available. METHODS: Using data primarily from two public health surveillance programmes conducted between 1992 and 2007, we estimated the incidence, occurrence of sequelae, mortality and the burden of disease in terms of disability-adjusted life years (DALYs) of CT in Denmark in 2014...
2017: PloS One
https://www.readbyqxmd.com/read/28545476/prenatal-diagnosis-and-prevention-of-toxoplasmosis-in-pregnant-women-in-northern-vietnam-study-protocol
#20
G Suzanne A Smit, Thi Lam Binh Vu, Trung Dung Do, Niko Speybroeck, Brecht Devleesschauwer, Elizaveta Padalko, Ellen Roets, Pierre Dorny
BACKGROUND: In Vietnam, no systematic prenatal toxoplasmosis screening is in place, and only few studies have assessed the prevalence and importance of this zoonotic parasite infection. In addition, no studies have been conducted to assess the risk factors associated with toxoplasmosis. This study protocol was developed to determine the seroprevalence of toxoplasmosis in pregnant women in Hanoi and Thai Binh, Northern Vietnam, and to evaluate the association with risk factors and congenital toxoplasmosis...
May 25, 2017: BMC Infectious Diseases
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