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Congenital toxoplasmosis

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https://www.readbyqxmd.com/read/29155634/how-does-imaging-of-congenital-zika-compare-with-imaging-of-other-torch-infections
#1
Deborah Levine, Jacques C Jani, Ilse Castro-Aragon, Mieke Cannie
The acronym TORCH is used to refer to congenital infections, such as toxoplasmosis, other infections (such as syphillis, varicella-zoster, and parvovirus B19), cytomegalovirus, and herpes simplex virus. The classic findings in patients with TORCH infections include rash in the mother during pregnancy and ocular findings in the newborn. Zika virus has emerged as an important worldwide congenital infection. It fits well with other congenital TORCH infections since there is a rash in the mother and there are commonly ocular abnormalities in the newborn...
December 2017: Radiology
https://www.readbyqxmd.com/read/29153066/-age-related-prevalence-of-toxoplasmosis-among-pregnant-women-in-hatay-estimation-depending-on-model
#2
Meryem Çetin, Şirin Çetin
Toxoplasmosis, caused by the obligate intracellular protozoan Toxoplasma gondii, is a common parasitic infection affecting approximately one-third of the world population. T.gondii infections are usually acquired by ingesting raw or insufficiently cooked meat and from unwashed fruits and vegetables contaminated with soil or water with cat feces. Primary infection acquired during pregnancy can cause severe congenital abnormalities in the fetus such as neurologic and ocular malformations, abortion, or stillbirth according to the degree of infection...
October 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/29091133/histopathology-of-murine-toxoplasmosis-under-treatment-with-dialyzable-leukocyte-extract
#3
Beatriz Eugenia Fuentes-Castro, Juan Gerardo Reyes-García, María Teresa Valenzuela-Vargas, Federico Martínez-Gómez
BACKGROUND: Dialyzable leukocyte extracts (DLEs) contain molecules smaller than 10 kDa with biological activity in receptor organisms. Primarily, they participate in the regulation of the Th1 immune response, which is essential for the control of several intracellular infections, such as toxoplasmosis. This disease is associated with congenital infection, encephalitis or systemic infections in immunocompromised individuals. The clinical course of this infection fundamentally depends on a well-regulated immune response and timely treatment with the appropriate drugs...
November 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28972027/choroidal-neovascularisation-triggered-multiple-evanescent-white-dot-syndrome-mewds-in-predisposed-eyes
#4
Thibaud Mathis, Benoit Delaunay, Armelle Cahuzac, Vivien Vasseur, Martine Mauget-Faÿsse, Laurent Kodjikian
BACKGROUND: Multiple evanescent white dot syndrome (MEWDS) is an inflammatory disease that can be associated with choroidalneovascularisation (CNV). However, few studies in the literature have described the occurrence of MEWDS in association with CNV. This paper discusses whether CNV can trigger MEWDS in a predisposed eye. METHODS: A retrospective multicentric case series of six eyes in six patients with acute onset of MEWDS and evidence of previous CNV was conducted between January 2015 and January 2017...
September 28, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28948861/prophylaxis-of-human-toxoplasmosis-a-systematic-review
#5
Senaka Rajapakse, Praveen Weeratunga, Chaturaka Rodrigo, Nipun Lakshitha de Silva, Sumadhya Deepika Fernando
Toxoplasmosis is an infection caused by the intracellular protozoan parasite Toxoplasma gondii, and is associated with clinically significant infection in immunocompromised individuals. Vertical transmission during pregnancy can manifest as congenital toxoplasmosis in the neonate, and can have serious consequences. This review aims to describe the modalities for prophylaxis of toxoplasmosis in susceptible populations, and focuses on the following: (1) prophylaxis of congenital toxoplasmosis; (2) prophylaxis of toxoplasmosis in patients with HIV/AIDS; and (3) prophylaxis of toxoplasmosis in transplant recipients...
September 26, 2017: Pathogens and Global Health
https://www.readbyqxmd.com/read/28929534/emerging-arboviruses-in-rio-grande-do-sul-brazil-chikungunya-and-zika-outbreaks-2014-2016
#6
Tatiana Schäffer Gregianini, Tani Ranieri, Cátia Favreto, Zenaida Marion Alves Nunes, Gabriela Luchiari Tumioto Giannini, Nara Druck Sanberg, Marilda Tereza Mar da Rosa, Ana Beatriz Gorini da Veiga
QUESTIONS INVESTIGATED: The recent emergence of arboviruses such as Chikungunya virus (CHIKV) and Zika virus (ZIKV) in Brazil has posed a threat to human health and to the country's economy. Outbreaks occur mainly in tropical areas; however, increasing number of cases have been observed in Rio Grande do Sul (RS), the Southernmost state; therefore, surveillance of these arboviruses is essential for public health measures. DESIGN: In this study, we analyzed 1276 samples from patients with clinically suspected arboviral diseases between 2014 and 2016...
September 20, 2017: Reviews in Medical Virology
https://www.readbyqxmd.com/read/28904337/toxoplasma-modulates-signature-pathways-of-human-epilepsy-neurodegeneration-cancer
#7
Huân M Ngô, Ying Zhou, Hernan Lorenzi, Kai Wang, Taek-Kyun Kim, Yong Zhou, Kamal El Bissati, Ernest Mui, Laura Fraczek, Seesandra V Rajagopala, Craig W Roberts, Fiona L Henriquez, Alexandre Montpetit, Jenefer M Blackwell, Sarra E Jamieson, Kelsey Wheeler, Ian J Begeman, Carlos Naranjo-Galvis, Ney Alliey-Rodriguez, Roderick G Davis, Liliana Soroceanu, Charles Cobbs, Dennis A Steindler, Kenneth Boyer, A Gwendolyn Noble, Charles N Swisher, Peter T Heydemann, Peter Rabiah, Shawn Withers, Patricia Soteropoulos, Leroy Hood, Rima McLeod
One third of humans are infected lifelong with the brain-dwelling, protozoan parasite, Toxoplasma gondii. Approximately fifteen million of these have congenital toxoplasmosis. Although neurobehavioral disease is associated with seropositivity, causality is unproven. To better understand what this parasite does to human brains, we performed a comprehensive systems analysis of the infected brain: We identified susceptibility genes for congenital toxoplasmosis in our cohort of infected humans and found these genes are expressed in human brain...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28883820/decidual-macrophage-functional-polarization-during-abnormal-pregnancy-due-to-toxoplasma-gondii-role-for-lilrb4
#8
Zhidan Li, Mingdong Zhao, Teng Li, Jing Zheng, Xianbing Liu, Yuzhu Jiang, Haixia Zhang, Xuemei Hu
During gestation, Toxoplasma gondii infection produces a series of complications including stillbirths, abortions, and congenital malformations. The inhibitory receptor, LILRB4, which is mainly expressed by professional antigen-presenting cells (especially macrophages and dendritic cells) may play an important immune-regulatory role at the maternal-fetal interface. To assess the role of LILRB4 during T. gondii infection, LILRB4(-/-) and T. gondii infected pregnant mouse models were established. Further, human primary-decidual macrophages were treated with anti-LILRB4 neutralizing antibody and then infected with T...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28879584/adverse-event-profile-of-pyrimethamine-based-therapy-in-toxoplasmosis-a-systematic-review
#9
REVIEW
Ruben R Ben-Harari, Elizabeth Goodwin, Julio Casoy
INTRODUCTION: Approximately a third of the population worldwide is chronically infected with Toxoplasma gondii. Pyrimethamine-based regimens are recommended for the treatment of toxoplasmosis. OBJECTIVE: The aim was to evaluate the safety profile of pyrimethamine-based treatment for the three main Toxoplasma manifestations: toxoplasmic encephalitis (TE), ocular toxoplasmosis, and congenital toxoplasmosis. METHODS: PubMed, Cochrane Library, and Google Scholar databases were searched through August 1, 2016...
December 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28851620/diagnosis-of-congenital-toxoplasmosis-in-a-renal-transplant-recipient-mother
#10
M Hermann, H Yéra, I Villena, B Cimon, E Thervet, A Benachi
We report the case of a first trimester toxoplasmosis infection in a renal transplant recipient. Real-time polymerase chain reaction in amniotic fluid at 18 weeks was negative for Toxoplasma gondii but at 26 weeks major fetal hydrocephalus was discovered leading to medical termination of pregnancy. Pathological examination confirmed lesions consistent with congenital toxoplasmosis. The herein case report, as well as data from the French reference centre for congenital Toxoplamosis (1835 cases in the past eight years), suggests that the strategy of management of pregnancy's first trimester Toxoplasmosis infection in patients treated by immunosuppressive therapy needs to be reconsidered...
October 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28827190/establishing-tools-for-early-diagnosis-of-congenital-toxoplasmosis-flow-cytometric-igg-avidity-assay-as-a-confirmatory-test-for-neonatal-screening
#11
Aline de Castro Zacche-Tonini, Giuliana Schmidt França Fonseca, Laura Néspoli Nassar Pansini de Jesus, Geisa Baptista Barros, Jordana Grazziela Alves Coelho-Dos-Reis, Samantha Ribeiro Béla, Anderson Silva Machado, Ana Carolina Aguiar Vasconcelos Carneiro, Gláucia Manzan Queiroz Andrade, Daniel Vitor Vasconcelos-Santos, José Nélio Januário, Andréa Teixeira-Carvalho, Ricardo Wagner Almeida Vitor, Eloísa Amália Vieira Ferro, José Roberto Mineo, Olindo Assis Martins-Filho, Elenice Moreira Lemos
The aim of this study was to evaluate the performance of conventional serology (Q-Preven™ and ELFAVIDAS™) and flow cytometry-based serologic tools for early serologic diagnosis of congenital toxoplasmosis. The study groups included prospectively confirmed cases of congenital toxoplasmosis (TOXO=88) and age-matching non-infected controls (NI=15).The results demonstrated that all samples tested positive/indeterminate for anti-T. gondii IgM screening at birth using air-dried whole blood samples. Serum samples collected at 30-45days after birth tested positive for ELFAVIDAS™ IgG in both groups...
August 18, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28798905/enrofloxacin-and-toltrazuril-are-able-to-reduce-toxoplasma-gondii-growth-in-human-bewo-trophoblastic-cells-and-villous-explants-from-human-third-trimester-pregnancy
#12
Rafaela J da Silva, Angelica O Gomes, Priscila S Franco, Ariane S Pereira, Iliana C B Milian, Mayara Ribeiro, Paolo Fiorenzani, Maria C Dos Santos, José R Mineo, Neide M da Silva, Eloisa A V Ferro, Bellisa de Freitas Barbosa
Classical treatment for congenital toxoplasmosis is based on combination of sulfadiazine and pyrimethamine plus folinic acid. Due to teratogenic effects and bone marrow suppression caused by pyrimethamine, the establishment of new therapeutic strategies is indispensable to minimize the side effects and improve the control of infection. Previous studies demonstrated that enrofloxacin and toltrazuril reduced the incidence of Neospora caninum and Toxoplasma gondii infection. The aim of the present study was to evaluate the efficacy of enrofloxacin and toltrazuril in the control of T...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28780216/neuroimaging-findings-of-congenital-toxoplasmosis-cytomegalovirus-and-zika-virus-infections-a-comparison-of-three-cases
#13
Heron Werner, Pedro Daltro, Tatiana Fazecas, Mohammad Zare Mehrjardi, Edward Araujo Júnior
OBJECTIVE: Toxoplasmosis, cytomegalovirus (CMV), and Zika virus (ZIKV) are among the common infectious agents that may infect the fetuses vertically. Clinical presentations of these congenital infections overlap significantly, and it is usually impossible to determine the causative agent clinically. The objective was the comparison of neuroimaging findings in three fetuses who underwent intrauterine infection by toxoplasmosis, CMV, and ZIKV. METHODS: Three confirmed cases of congenital toxoplasmosis, CMV, and ZIKV infections were included in the study over 7 months prospectively...
August 2, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28761539/extensive-intracranial-calcification-of-pseudo-torch-syndrome-with-features-of-dandy-walker-malformation
#14
Ashis Patnaik, Sudhansu Sekhar Mishra, Srikanta Das
Pseudo-TORCH syndrome or congenital infection-like syndrome is a group of conditions which resemble congenital infections such as those caused by toxoplasmosis, rubella, cytomegalovirus (CMV), herpes (TORCH) group of organisms, clinico-radiologically, but serological tests are negative for the organisms. One of the variety shows features such as microcephaly, extensive intracranial calcification showing gross resemblance to congenital CMV infection, making its other name as microcephaly intracranial calcification syndrome (MICS)...
July 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28728858/-dress-complicated-by-hemophagocytic-lymphohistiocytosis-in-an-infant-treated-for-congenital-toxoplasmosis
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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