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Toxoplasmosis congenital

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https://www.readbyqxmd.com/read/28640004/ocular-lesions-in-congenital-toxoplasmosis-in-santa-isabel-do-iva%C3%A3-paran%C3%A3-brazil
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
https://www.readbyqxmd.com/read/28527270/-effect-of-antenatal-spiramycin-treatment-on-the-frequency-of-retinochoroiditis-due-to-congenital-toxoplasmosis-in-a-colombian-cohort
#10
Liliana María Zuluaga, John Camilo Hernández, Carlos Felipe Castaño, Jorge Hernando Donado
INTRODUCTION: Gestational toxoplasmosis is frequent and severe. There is still debate about the benefits of treatment against ocular manifestations in the newborn. Spiramycin treatment is used for this purpose, unfortunately prenatal diagnosis is sometimes delayed and pregnant women are not treated. OBJECTIVE: To describe the relationship between treatment with spiramycin during pregnancy in mothers with gestational toxoplasmosis and development of ocular toxoplasmosis in newborns...
April 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28487847/recombinant-tghsp70-immunization-protects-against-toxoplasma-gondii-brain-cyst-formation-by-enhancing-inducible-nitric-oxide-expression
#11
Paulo Czarnewski, Ester C B Araújo, Mário C Oliveira, Tiago W P Mineo, Neide M Silva
Toxoplasma gondii is known to cause congenital infection in humans and animals and severe disease in immunocompromised individuals; consequently development of vaccines against the parasite is highly necessary. Under stress conditions, T. gondii expresses the highly immunogenic heat shock protein 70 (TgHSP70). Here, we assessed the protective efficacy of rTgHSP70 immunization combined with Alum in oral ME-49 T. gondii infection and the mechanisms involved on it. It was observed that immunized mice with rTgHSP70 or rTgHSP70 adsorbed in Alum presented a significantly reduced number of cysts in the brain that was associated with increased iNOS+ cell numbers in the organ, irrespective the use of the adjuvant...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28486633/development-of-a-murine-vertical-transmission-model-for-toxoplasma-gondii-oocyst-infection-and-studies-on-the-efficacy-of-bumped-kinase-inhibitor-bki-1294-and-the-naphthoquinone-buparvaquone-against-congenital-toxoplasmosis
#12
Joachim Müller, Adriana Aguado-Martínez, Luis-Miguel Ortega-Mora, Javier Moreno-Gonzalo, Ignacio Ferre, Matthew A Hulverson, Ryan Choi, Molly C McCloskey, Lynn K Barrett, Dustin J Maly, Kayode K Ojo, Wes Van Voorhis, Andrew Hemphill
Objectives: Establishment of a mouse model for congenital toxoplasmosis based on oral infection with oocysts from Toxoplasma gondii ME49 and its application for investigating chemotherapeutic options against congenital toxoplasmosis. Methods: CD1 mice were mated, orally infected with 5, 25, 100, 500 or 2000 oocysts and monitored for clinical signs and survival of dams and pups until 4 weeks post partum . The parasite burden in infected mice was quantified by real-time PCR in lungs, brains and, in the case of surviving pups, also in eyes...
May 9, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28433574/serodiagnosis-of-toxoplasmosis-the-effect-of-measurement-of-igg-avidity-in-pregnant-women-in-rabat-in-morocco
#13
Majda Laboudi, Abderrahim Sadak
BACKGROUND: The diagnosis of Toxoplasmosis in pregnant women during the early first trimester of pregnancy is very important for preventing congenital infection of the fetus; it will not only prevent the risk of transmitting the infection to the fetus but it will also enable to give these women a preventive treatment. In this study, the avidity test was performed on pregnant women during their first prenatal visit at the National Institute of Hygiene in Rabat, Morocco. FINDINGS: One hundred and twenty-eight sera samples were collected from 128 pregnant women between August 2015 and June 2016; these women were chosen retrospectively and were in their first four months of pregnancy...
April 20, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28426680/echocardiographic-findings-in-infants-with-presumed-congenital-zika-syndrome-retrospective-case-series-study
#14
Danielle Di Cavalcanti, Lucas V Alves, Geraldo J Furtado, Cleusa C Santos, Fabiana G Feitosa, Maria C Ribeiro, Paulo Menge, Izabelle M Lira, Joao G Alves
OBJECTIVE: To report the echocardiographic evaluation of 103 infants with presumed congenital Zika syndrome. METHODS: An observational retrospective study was performed at Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Recife, Brazil. 103 infants with presumed congenital Zika syndrome. All infants had microcephaly and head computed tomography findings compatible with congenital Zika syndrome. Zika IgM antibody was detected in cerebrospinal fluid samples of 23 infants...
2017: PloS One
https://www.readbyqxmd.com/read/28418539/ophthalmic-manifestations-of-congenital-zika-syndrome-in-colombia-and-venezuela
#15
Juan B Yepez, Felipe A Murati, Michele Pettito, Carlos F Peñaranda, Jazmin de Yepez, Gladys Maestre, J Fernando Arevalo
Importance: The ocular manifestations and sequelae of Zika virus infection are not well known. Recently, the World Health Organization changed the declaration of Zika as a public health emergency and designated the viral outbreak and related microcephaly clusters as a long-term program of work. This change indicates the urgent need to evaluate and document ophthalmic manifestations in patients for timely management of this disease. In addition, confirmation whether the public health problem in Brazil extends to other regions in South America is needed...
May 1, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28412596/is-lenticulostriated-vasculopathy-an-unfavorable-prognostic-finding-in-infants-with-congenital-cytomegalovirus-infection
#16
Antonietta Giannattasio, Pasquale Di Costanzo, Paola Milite, Daniela De Martino, Eleonora Capone, Antonia Romano, Carmela Bravaccio, Letizia Capasso, Francesco Raimondi
BACKGROUND: Lenticulostriated vasculopathy (LSV) detected in head ultrasound (HUS) has been related to neurological and hearing sequelae in infants with congenital cytomegalovirus (cCMV) infection. OBJECTIVE: To assess the role of LSV in predicting neurodevelopmental and hearing outcomes in infants with cCMV infection. STUDY DESIGN: We enrolled consecutive infants who were affected by cCMV infection and underwent HUS within the first month of life...
April 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28368078/genotyping-of-toxoplasma-gondii-strain-directly-from-human-csf-samples-of-congenital-toxoplasmosis-clinical-case
#17
Chiara Pagliuca, Gabiria Pastore, Elena Scaglione, Annalisa Migliucci, Giuseppe Maria Maruotti, Annunziata Gaetana Cicatiello, Elena Salvatore, Marco Picardi, Josè Camilla Sammartino, Maria Consiglio Buonocore, Pasquale Martinelli, Emilia Iaccarino, Roberta Colicchio, Paola Salvatore
This report describes a case of congenital toxoplasmosis in a newborn in Southern Italy. A pregnant mother had been admitted at the 20th week of her pregnancy on account of pharyngodynia and laterocervical lymphadenopathy. Although serological testing of the mother's serum documented a seroconversion with positive IgG and IgM anti-Toxoplasma antibodies during II trimester, the woman refused to perform prenatal diagnosis for congenital toxoplasmosis. Fetal ultrasound scan already showed mild asymmetrical triventricular hydrocephaly and cerebral calcifications...
April 3, 2017: New Microbiologica
https://www.readbyqxmd.com/read/28367800/vaccination-with-recombinant-adenovirus-expressing-multi-stage-antigens-of-toxoplasma-gondii-by-the-mucosal-route-induces-higher-systemic-cellular-and-local-mucosal-immune-responses-than-with-other-vaccination-routes
#18
Ting Wang, Huiquan Yin, Yan Li, Lingxiao Zhao, Xiahui Sun, Hua Cong
Toxoplasmosis caused by Toxoplasma gondii, an obligate intracellular protozoan, is a cause of congenital disease and abortion in humans and animals. Various vaccination strategies against toxoplasmosis in rodent models have been used in the past few decades; however, effective vaccines remain a challenge. A recombinant adenovirus vaccine expressing ubiquitin-conjugated multi-stage antigen segments (Ad-UMAS) derived from different life-cycle stages of T. gondii was constructed previously. Here, we compared the immune responses and protection effects in vaccination of mice with Ad-UMAS by five vaccination routes including intramuscular (i...
2017: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/28347510/-good-s-syndrome-and-congenital-toxoplasmosis-due-to-maternal-reactivation-during-pregnancy
#19
J Tahiri, F Fouyssac, O Morel, A Maatouk
INTRODUCTION: Good syndrome is a rare condition in which thymoma is associated with hypogammaglobulinemia. It is characterized by an increased susceptibility to infections. CASE REPORT: We report a woman with Good's syndrome diagnosed after severe congenital toxoplasmosis in her daughter, even though she was immunized against this infection during pregnancy. CONCLUSION: This presentation is very unusual by its early diagnosis and to our knowledge is the first report of parasitic infection in this syndrome...
May 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28339296/synthetic-parasites-a-successful-mucosal-nanoparticle-vaccine-against-toxoplasma-congenital-infection-in-mice
#20
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...
April 2017: Future Microbiology
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