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Lisa M Daum, Lindsay R Sklar, Darius R Mehregan
The term blueberry muffin rash is used to describe the clinical presentation of dermal extramedullary hematopoiesis. The common culprits of this rash include a TORCH (toxoplasmosis, other agents, rubella, cytomegalovirus, herpes) infection or hematologic dyscrasia. Association of this rash with hereditary spherocytosis is extremely rare. We present a unique case of a neonate born with a blueberry muffin rash secondary to hereditary spherocytosis.
February 2018: Cutis; Cutaneous Medicine for the Practitioner
Michelle de Paula Reis, Daniely Alves de Lima, Karoline Bach Pauli, Carlos Eduardo Linhares Andreotti, André Luiz Soares de Moraes, Daniela Dib Gonçalves, Italmar Teodorico Navarro, Paulo Sérgio Alves Bueno, Flavio Augusto Vicente Seixas, Arquimedes Gasparotto Junior, Emerson Luiz Botelho Lourenço
Toxoplasmosis is a zoonosis of worldwide distribution. Currently, two drugs, pyrimethamine and sulfadiazine, are used as a reference in the treatment of toxoplasmosis, but the resistance of Toxoplasma gondii appears as a relevant public health problem. In order to identify new drugs to toxoplasmosis treatment, we performed a molecular docking of raltitrexed to T. gondii thymidylate synthase-dihydrofolate reductase (TS-DHFR) and also evaluated its efficacy in infected mice. Initially, raltitrexed was docked on the crystallographic structures of TS-DHFR from T...
March 17, 2018: Parasitology Research
Ariella Andrade Marchioro, Cristiane Maria Colli, Carla Zangari de Souza, Suelen Santos da Silva, Bruna Tiaki Tiyo, Fernanda F Evangelista, Lourenco Higa, Ivete Conchon-Costa, Ana Lúcia Falavigna-Guilherme
This study detected and compared the levels of IFN-γ, TNF-α, TGF-β and nitric oxide (NO) in amniotic fluid (AF) and serum of pregnancies with acute toxoplasmosis, Southern Brazil. It also was compared the levels of the same mediators in the serum of pregnancies in acute and chronic toxoplasmosis with non-infected. Serological investigation, anti-T gondii IgM and IgG, of the 67 pregnancies was determined by Elisa MEIA. Forty two were uninfected, eight in chronic phase and 17 in acute phase. Among the acute phase, seven agreed to amniocentesis...
March 13, 2018: Cytokine
Ma Rong, Sun Hui, Yan Ge, Wei Qing-Kuan
At present, there are no ideal drugs and measures in the treatment and prevention of toxoplasmosis. The development of safe, convenient, and strong protective nucleic acid vaccine is an important strategy for prevention and control of toxoplasmosis. The rhoptry protein (ROP) is a large class of proteins secreted by Toxoplasma gondii . ROPs play an important role in the invasion of host cells, the formation of parsitophorous vacuole (PV) and the regulation of proliferation by T. gondii . Thus, ROPs become the most promising candidates of vaccine...
February 12, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
Alba Pablos-Tanarro, Luis Miguel Ortega-Mora, Antonio Palomo, Francisco Casasola, Ignacio Ferre
The objective of the present study was to investigate the seroprevalence of Toxoplasma gondii infection in Iberian sows reared in extensive and intensive management conditions and to compare two serologic techniques used for diagnosis. In addition, some possible risk factors associated with the presence of serum antibodies to T. gondii were also studied. Serum samples were collected from 2492 Iberian sows on 14 pig farms. Three types of management systems were included, traditional extensive outdoor farms (five farms), intensive farms with outdoor access (n = 4), and conventional intensive indoor farms (n = 5)...
March 13, 2018: Parasitology Research
Brice Autier, Sarah Dion, Florence Robert-Gangneux
AIM: Toxoplasmosis following liver transplant with donor-recipient mismatch is rare, but is often life-threatening. However, there are no data on the frequency of cyst carriage in the liver, nor consensual chemoprophylaxis guidelines. This study aimed at describing frequency and localisation of Toxoplasma cysts in the liver in a mouse model of chronic infection to predict the risk in liver transplantation. METHODS: Heart, brain and liver lobes of 21 mice chronically infected with Toxoplasma were collected for DNA extraction and amplification of Toxoplasma gondii rep529 sequence by real-time PCR...
March 13, 2018: Journal of Clinical Pathology
Mlatovi Dégbé, Françoise Debierre-Grockiego, Amivi Tété-Bénissan, Héloïse Débare, Kodjo Aklikokou, Isabelle Dimier-Poisson, Messanvi Gbeassor
Tectona grandis (teak) and Vernonia amygdalina (bitter leaf) are plants used in traditional medicine in West Africa. In this study, we tested ethanolic and hydro-ethanolic extracts of bark and leaves of T. grandis and ethanolic extract of leaves of V. amygdalina for their inhibitory effect on Toxoplasma gondii, a protozoan parasite responsible for toxoplasmosis. Ethanolic extract of V. amygdalina leaves had proportional contents of phenols, tannins, flavonoids, and polysaccharides. This extract presented the highest efficacy against T...
2018: Parasite: Journal de la Société Française de Parasitologie
Kunal Gupta, Hongyue Wang, Sanjiv B Amin
The aim of this study was to evaluate the effect of intermittent parenteral copper supplementation (IPC) on serum copper status and biochemical and hematological measures of copper toxicity and deficiency in premature infants with parenteral nutrition (PN)-associated cholestasis (PNAC). We performed a prospective nested observational study in premature infants with PNAC who received IPC after the development of PNAC. Infants with chromosomal disorders, TORCH (toxoplasmosis, parvovirus, syphilis, rubella, cytomegalovirus, herpes, human immunodeficiency virus) infection, metabolic disorder, and/or surgical abnormality of the hepatobiliary system were excluded...
March 12, 2018: Nutrition in Clinical Practice
Matthieu Bastien, Amelie Vaniscotte, Benoit Combes, Gerald Umhang, Estelle Germain, Valentin Gouley, Alice Pierlet, Thomas Quintaine, Marie-Amelie Forin-Wiart, Isabelle Villena, Dominique Aubert, Franck Boue, Marie-Lazarine Poulle
The faeces of the red fox, Vulpes vulpes (Linnaeus), and the domestic cat, Felis catus (Linnaeus), can be responsible for spreading eggs of Echinococcus multilocularis Leuckart, 1863 and oocysts of Toxoplasma gondii (Nicolle et Manceaux, 1908) into the environment. The accidental ingestion of these eggs or oocysts, through consumption of raw fruits or vegetables grown in or in contact with contaminated soil, can lead to alveolar echinococcosis (AE) or toxoplasmosis in humans. The present study provides a quantitative assessment of the faecal deposition by foxes and cats in kitchen gardens where fruits and vegetables are grown and its consequences for zoonosis transmission...
March 8, 2018: Folia Parasitologica
Espérance Moine, Nathalie Moiré, Isabelle Dimier-Poisson, Kévin Brunet, William Couet, Cyril Colas, Nathalie Van Langendonck, Cécile Enguehard-Gueiffier, Alain Gueiffier, Bruno Héraut, Caroline Denevault-Sabourin, Françoise Debierre-Grockiego
The current therapeutic arsenal for toxoplasmosis is restricted to drugs non-specific to the parasite which cause important side effects. Development of more efficient and specific anti-Toxoplasma compounds is urgently needed. Imidazo[1,2-b]pyridazines designed to inhibit the calcium-dependent protein kinase 1 of Toxoplasma gondii (TgCDPK1) and effective against tachyzoite growth in vitro at submicromolar ranges were modified into hydrochloride salts to be administered in vivo in a mouse model of acute toxoplasmosis...
March 7, 2018: International Journal for Parasitology
Zineb Lakhrif, Alexis Moreau, Bruno Hérault, Anne Di-Tommaso, Matthieu Juste, Nathalie Moiré, Isabelle Dimier-Poisson, Marie-Noëlle Mévélec, Nicolas Aubrey
Toxoplasmosis is a major public health problem and the development of a human vaccine is of high priority. Efficient vaccination against Toxoplasma gondii requires both a mucosal and systemic Th1 immune response. Moreover, dendritic cells play a critical role in orchestrating the innate immune functions and driving specific adaptive immunity to T. gondii . In this study, we explore an original vaccination strategy that combines administration via mucosal and systemic routes of fusion proteins able to target the major T...
2018: Frontiers in Immunology
Qi Gao, Nian-Zhang Zhang, Fu-Kai Zhang, Meng Wang, Ling-Ying Hu, Xing-Quan Zhu
BACKGROUND: Toxoplasma gondii is an obligate intracellular parasite that can infect almost all warm-blooded animals. T. gondii profilin (TgPF) plays a crucial role in parasite motility and host cell invasion, and has shown promise against toxoplasmosis. DNA vaccine was considered to elicit effective humoral and cell-mediated immunity against T. gondii infection. The objective of the present study was to evaluate the immunogenicity of TgPF in mice using a DNA vaccination strategy. METHODS: A DNA vaccine (pVAX-PF) encoding TgPF gene was constructed and then was intramuscularly injected into mice with and without a plasmid encoding IL-15 (pVAX-IL-15)...
March 7, 2018: BMC Infectious Diseases
Nathan Ford, Graeme Meintjes, Alexandra Calmy, Helen Bygrave, Chantal Migone, Marco Vitoria, Martina Penazzato, Lara Vojnov, Meg Doherty
In 2017, the World Health Organization (WHO) published guidelines for the management of advanced human immunodeficiency virus (HIV) disease within a public health approach. Recent data suggest that more than a third of people starting antiretroviral therapy (ART) do so with advanced HIV disease, and an increasing number of patients re-present to care at an advanced stage of HIV disease following a period of disengagement from care. These guidelines recommend a standardized package of care for adults, adolescents, and children, based on the leading causes of morbidity and mortality: tuberculosis, severe bacterial infections, cryptococcal meningitis, toxoplasmosis, and Pneumocystis jirovecii pneumonia...
March 4, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
Juliana Boaventura Avelar, Marcos Gontijo da Silva, Hanstter Hallison Alves Rezende, Heloisa Ribeiro Storchilo, Waldemar Naves do Amaral, Isolina Rodrigues Xavier, Mariza Martins Avelino, Ana Maria de Castro
INTRODUCTION: Knowledge of the epidemiological profile and risk factors for Toxoplasma gondii infection among postpartum women is a relevant issue, because this protozoan can be vertically transmitted to the developing fetus, which can cause severe and debilitating disease. The aim of this study was to assess the risk factors associated with T. gondii infection in postpartum women in Goiânia, GO, Brazil. METHODS: This cross-sectional study comprised 229 postpartum women, among whom 204 were chronically infected (IgG+/IgM-), and 25 were seronegative (IgG-/IgM-; control group)...
January 2018: Revista da Sociedade Brasileira de Medicina Tropical
Sung Who Park, So Hee Kim, Han Jo Kwon, Seung Min Lee, Ik Soo Byon, Ji Eun Lee
PURPOSE: To assess the value of positive immunoglobulin (Ig) M serum antibody (Ab) findings in uveitis patients. METHODS: We reviewed medical records of patients who had a positive serological test for Toxoplasma gondii-specific IgM Ab. Their clinical data, including history, demographic characteristics, laboratory findings, clinical findings, treatment outcomes, and recurrences, were reviewed retrospectively. RESULTS: Of 2919 uveitis patients who underwent a serological test for suspected ocular toxoplasmosis (OT), 18 presented with positive Ig M results...
March 7, 2018: Ocular Immunology and Inflammation
Natalia Ignaszak-Kaus, Katarzyna Ozegowska, Piotr Piekarski, Leszek Pawelczyk, Piotr Jędrzejczak
OBJECTIVES: Preconception counseling, maternal health-related habits, diet, folic acid consumption, substances abuse, may all impact the outcome of pregnancy. The aim of this study was to compare the planning and preparation for pregnancy among pregnant women with and without infertility. MATERIAL AND METHODS: A survey of health behaviors prior to and during pregnancy that could affect pregnancy outcomes, including laboratory tests performed, stimulant usage, initiation of prenatal care, and folic acid intake, was conducted among 400 pregnant women...
2018: Ginekologia Polska
G Yan-Li, X Yi-Qing, Z Yong-Gen, X U Da-Cheng, X U Wen-Wei, D Yang, S Ming-Xue
Objective To investigate the prevalence of Toxoplasma gondii infection and related knowledge and behavior among special population in Changzhou City, so as to provide the evidence for formulating effective measures of toxoplasmosis prevention. Methods The pregnant women and patients with neoplasia in Changzhou hospitals, and livestock and poultry breeding or processing workers were selected as the subjects of the study. Venous blood samples were collected from each participant for detecting IgG and IgM antibodies against T...
March 20, 2017: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
Aric J Schultz, Vern B Carruthers
Egress is a crucial phase of the Toxoplasma gondii intracellular lytic cycle. This is a process that drives inflammation and is strongly associated with the pathogenesis observed during toxoplasmosis. Despite the link between this process and virulence, little is known about egress on a mechanistic or descriptive level. Previously published work has suggested that a phospholipase, lecithin-cholesterol acyltransferase (LCAT), secreted from the parasite's dense granules contributes to parasite growth, virulence, and egress...
January 2018: MSphere
S Hadj Rabia, F Benmoussa, A Benzaid, A Baz
The present preliminary study intends to evaluate the in vitro use of hydatid antigen and their antibodies once labeled with iodine 125(I125 ) and characterized from viewpoint of radiochemical purity and immunoreactivity. Radiolabelled molecules gave satisfactory purity of 94% and 96%-98%, for hydatid antigen and IgG respectively. As regards, the specific activity of these latter, varied between 4.79 and 5.97 μCi/μg. The specificity test of radiolabelled IgG against the hydatid membranes showed a significant recognition that increased proportionally according to the contact surface...
February 27, 2018: Experimental Parasitology
Samia E Etewa, Dalia A Abo El-Maaty, Rania S Hamza, Ashraf S Metwaly, Mohamed H Sarhan, Sara A Abdel-Rahman, Ghada M Fathy, Mahmoud A El-Shafey
Toxoplasmosis is a zoonotic parasitic disease with worldwide distribution. Chitosan is a natural polymer which is commonly used in the production of nanomedicines. It is known to enable higher drug permeation, being biocompatible and has very low toxicity, besides its antimicrobial effects. Our study aimed to assess the effect of spiramycin-loaded chitosan nanoparticles (SLCNs) in treatment of acute and chronic toxoplasmosis in mice. 200 male Swiss albino mice were included in our study, divided to two main groups; Toxoplasma gondii RH strain infected group and ME49 strain infected group, each main group was subdivided into four subgroups; subgroup I: infected control, subgroup II: infected and received chitosan nanoparticles (CS NPs); 20 µg of CS NPs in 100 µl of PBS/mouse/dose, subgroup III: infected and treated with spiramycin (Rovamycin); 100 mg/kg/day, subgroup IV: infected and treated with 100 mg/kg/day spiramycin-loaded chitosan nanoparticles...
March 2018: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
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