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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/28713605/diarrhea-as-a-presenting-symptom-of-disseminated-toxoplasmosis
#2
Matthew Glover, Zhouwen Tang, Robert Sealock, Shilpa Jain
Disseminated toxoplasmosis is uncommon in both immunocompetent and immunocompromised hosts with gastrointestinal involvement being rarely described. We report a case of disseminated gastrointestinal toxoplasmosis in an immunocompromised man who presented with one month of diarrhea and abdominal pain. Imaging showed thickening of the ascending colon and cecum. Esophagogastroduodenoscopy and colonoscopy biopsies revealed Toxoplasma gondii, confirmed by immunostain. Symptoms completely resolved following treatment with pyrimethamine, sulfadiazine, and leucovorin...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28710007/chronic-toxoplasmosis-treatment-with-diphenyl-diselenide-in-infected-mice-modulates-the-activity-of-purinergic-enzymes-and-reduces-inflammation-in-spleen
#3
Pedro H Doleski, Maura V Ten Caten, Daniela F Passos, Lívia G Castilhos, Daniela B R Leal, Vanessa S Machado, Nathieli B Bottari, Fernanda F Vogel, Ricardo E Mendes, Aleksandro Schafer da Silva
Toxoplasma gondii, an intracellular protozoan, may cause chronic infection in the brain tissue of the host inducing a systemic pro-inflammatory profile. Chronic infections can induce numerous physiological changes, such as alterations in the immune and oxidative profiles. Diphenyl diselenide (PhSe)2, an organoselenium compound, has shown antioxidant and immunomodulatory activities in recent studies. So, the aim of this study was to investigate the activity of purinergic enzymes and reactive oxygen species (ROS) in serum and spleen of mice chronically infected by T...
July 11, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28696589/in-vitro-activity-of-the-interaction-between-taxifolin-dihydroquercetin-and-pyrimethamine-against-toxoplasma-gondii
#4
Daniel A Abugri, William H Witola, Albert E Russell, Roberta M Troy
Toxoplasmosis is one of the most neglected zoonotic foodborne parasitic diseases that cause public health and socio-economic concern worldwide. The current drugs used for the treatment of toxoplasmosis have been identified to have clinical limitations. Hence, new drugs are urgently needed to eradicate T.gondii infections globally. Here, an in vitro anti-Toxoplasma gondii activity of taxifolin (dihydroquercetin) and dihydrofolate inhibitor (pyrimethamine) alone and in combination with a fixed concentration of pyrimethamine were investigated against the rapidly proliferating T...
July 11, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28692640/congenital-toxoplasmosis-in-austria-prenatal-screening-for-prevention-is-cost-saving
#5
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/28682759/structuraland-antigenic-analysis-of-a-new-rhoptry-pseudokinase-gene-rop54-in-toxoplasma-gondii
#6
Jian Zhou, Gang Lu, Lin Wang, Aihua H Zhou, Yali L Han, Jingjing J Guo, Pengxia X Song, Huaiyu Y Zhou, Hua Cong, Ming Hou, Shenyi Y He
Toxoplasma gondii is defined as an obligate intracellular apicomplexan parasite and influences approximatelyone-third of the human all over the world. ROP54 protein is expressed in the rhoptry of Toxoplasma gondii. In the present study, we used SMART software to analyzethe secondary structure of ROP54. The 3D model of ROP54 protein was constructed and analyzed using SWISS-MODEL server and VMD software. The structure results fully showed that ROP54 proteinis an importantmember from the ROP family. Moreover, DNAMAN software and Epitope Database online service were used to analyze liner-B cell epitopes and Th-cell epitopes of the protein...
September 26, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28653591/mechanism-of-dexamethasone-in-the-context-of-toxoplasma-gondii-infection
#7
Jing Zhang, Xin Qin, Y U Zhu, Shuang Zhang, Xue-Wei Zhang, H E Lu
Toxoplasmosis is a serious zoonoses disease and opportunistic, and can be life-threatening. Dexamethasone (DEX) is widely used in the clinic for treatment of inflammatory and autoimmune diseases. However, long-term use of DEX is often easy to lead to acute toxoplasmosis in patients, and the potential molecular mechanism is still not very clear. The aims of this study were to investigate the effect of DEX on proliferation of Toxoplasma and its molecular mechanisms, and to establish the corresponding control measures...
June 27, 2017: Parasitology
https://www.readbyqxmd.com/read/28652238/characterization-of-the-activities-of-dinuclear-thiolato-bridged-arene-ruthenium-complexes-against-toxoplasma-gondii
#8
Afonso P Basto, Joachim Müller, Riccardo Rubbiani, David Stibal, Federico Giannini, Georg Süss-Fink, Vreni Balmer, Andrew Hemphill, Gilles Gasser, Julien Furrer
The in vitro effects of 18 dinuclear-thiolato bridged arene ruthenium complexes, (1 mono-, 4 di- and 13-tri-thiolato compounds), originally designed as anti-cancer agents, were studied in the apicomplexan parasite Toxoplasma gondii grown in human foreskin fibroblast host cells (HFF). Some tri-thiolato compounds exhibited anti-parasitic efficacy at 250 nM and below. Among those, complex 1 and complex 2 inhibited T. gondii proliferation with IC50 values of 34 and 62 nM, respectively, and they did not affect HFF at dosages of 200 μM or above, resulting in selectivity indices of > 23' 000...
June 26, 2017: Antimicrobial Agents and Chemotherapy
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
#9
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/28630781/development-of-neurological-mouse-model-for-toxoplasmosis-using-toxoplasma-gondii-isolated-from-chicken-in-kenya
#10
John Mokua Mose, David Muchina Kamau, John Maina Kagira, Naomi Maina, Maina Ngotho, Adele Njuguna, Simon Muturi Karanja
Animal models for the toxoplasmosis are scarce and have limitations. In this study, a neurological mouse model was developed in BALB/c mice infected intraperitoneally with 15 cysts of a Toxoplasma gondii isolate. The mice were monitored for 42 days and euthanized at different time points. Another group of mice were orally treated with dexamethasone (DXM: 2.66 mg/kg daily, 5.32 mg/kg daily) at 42 days after infection and monitored for a further 42 days. A mortality rate of 15% and 28.6% was observed in mice given 2...
2017: Pathology Research International
https://www.readbyqxmd.com/read/28626822/a-prospective-randomized-trial-of-azithromycin-versus-trimethoprim-sulfamethoxazole-in-treatment-of-toxoplasmic-retinochoroiditis
#11
Alireza Lashay, Ahmad Mirshahi, Najaf Parandin, Hamid Riazi Esfahani, Mehdi Mazloumi, Mohammad Reza Lashay, Mohammad Karim Johari, Elham Ashrafi
PURPOSE: To assess the efficacy of oral azithromycin in the treatment of toxoplasmic retinochoroiditis. METHODS: A randomized interventional comparative study was conducted on 14 patients with ocular toxoplasmosis who were treated with oral azithromycin and 13 patients who were treated with oral trimethoprim/sulfamethoxazole for 6-12 weeks. The achievement of treatment criteria in the two groups and lesion size reduction were considered as primary outcome measures...
June 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28626452/proteomic-differences-between-developmental-stages-of-toxoplasma-gondii-revealed-by-itraq-based-quantitative-proteomics
#12
Ze-Xiang Wang, Chun-Xue Zhou, Hany M Elsheikha, Shuai He, Dong-Hui Zhou, Xing-Quan Zhu
Toxoplasma gondii has a complex two-host life-cycle between intermediate host and definitive host. Understanding proteomic variations across the life-cycle stages of T. gondii may improve the understanding of molecular adaption mechanism of T. gondii across life-cycle stages, and should have implications for the development of new treatment and prevention interventions against T. gondii infection. Here, we utilized LC-MS/MS coupled with iTRAQ labeling technology to identify differentially expressed proteins (DEPs) specific to tachyzoite (T), bradyzoites-containing cyst (C) and sporulated oocyst (O) stages of the cyst-forming T...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28609444/identification-of-compounds-that-suppress-toxoplasma-gondii-tachyzoites-and-bradyzoites
#13
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/28592362/toxoplasma-gondii-apoptosis-and-cellular-division-alterations-after-in-vitro-treatment-with-copper-ii-complexes
#14
J A Portes, C S Motta, N F Azeredo, C Fernandes, A Horn, W De Souza, R A DaMatta, S H Seabra
Toxoplasma gondii is the causative agent of toxoplasmosis, which is one of the most common parasitic diseases in the world. Toxoplasmosis causes severe damage to immunocompromised hosts, and the most frequently used therapy is the combination of pyrimethamine and sulfadiazine, which has side effects. Thus, there is a need for new therapies that target T. gondii. Herein, we present the anti-Toxoplasma effect of two new copper(II) complexes: [(H2L1) Cu (μ-Cl)2 Cu(H2L1)] Cl2·5H2O (1) and [(H2L2) Cu (μ-Cl)2 Cu(H2L2)] Cl2·6H2O (2)...
April 20, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28591758/are-the-polyomaviruses-bk-and-jc-associated-with-opportunistic-infections-graft-versus-host-disease-or-worse-outcomes-in-adult-patients-receiving-their-first-allogeneic-stem-cell-transplantation-with-low-dose-alemtuzumab
#15
Laila Schneidewind, Thomas Neumann, Florian Knoll, Kathrin Zimmermann, Sigrun Smola, Christian Andreas Schmidt, William Krüger
BACKGROUND: The association of polyomaviruses BK and JC with other opportunistic infections and graft-versus-host disease (GvHD) in allogeneic stem cell transplantation is controversially discussed. METHODS: We conducted a retrospective study of 64 adult patients who received their first allogeneic stem cell transplantation between March 2010 and December 2014; the follow-up time was 2 years. RESULTS: Acute leukemia was the most frequent underlying disease (45...
June 8, 2017: Acta Haematologica
https://www.readbyqxmd.com/read/28591288/ocular-sarcoidosis-masked-by-positive-igm-for-toxoplasmosis
#16
Murilo Bertazzo Peres, Jacqueline Martins de Sousa, Heloisa Nascimento
We report a case of ocular sarcoidosis with positive immunoglobulin (Ig) M and IgG serology for toxoplasmosis. The patient was a young female with red painful eyes, bilateral eyelid edema, and panuveitis with periphlebitis. In laboratory testing, she was IgM and IgG positive for toxoplasmosis and anergic in the tuberculin test. Topical treatment for anterior uveitis and oral antibiotics for toxoplasmosis were started, without improvement. Orbit tomography showed increased lacrimal glands bilaterally, and chest X-ray radiographic findings were consistent with pulmonary sarcoidosis, which supported the presumed ocular sarcoidosis diagnosis...
March 2017: Arquivos Brasileiros de Oftalmologia
https://www.readbyqxmd.com/read/28561960/acute-respiratory-distress-syndrome-and-septic-shock-in-a-cat-with-disseminated-toxoplasmosis
#17
Natashia A Evans, Julie M Walker, Alison C Manchester, Jonathan F Bach
OBJECTIVE: To describe acute respiratory distress syndrome (ARDS) and septic shock in a cat with disseminated toxoplasmosis. CASE SUMMARY: A 2-year-old neutered male domestic shorthair cat was presented for acute respiratory distress. At the time of presentation it had been receiving cyclosporine for treatment of eosinophilic dermatitis. Thoracic radiographs revealed severe mixed nodular interstitial and alveolar patterns. An endotracheal wash was performed, which confirmed a diagnosis of pulmonary toxoplasmosis...
July 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28559264/synergistic-activity-between-statins-and-bisphosphonates-against-acute-experimental-toxoplasmosis
#18
Zhu-Hong Li, Catherine Li, Sergio H Szajnman, Juan B Rodriguez, Silvia N J Moreno
Bisphosphonates are widely used for the treatment of bone disorders. These drugs also inhibit growth of a variety of protozoan parasites like Toxoplasma gondii, the etiologic agent of toxoplasmosis. The target of the most potent bisphosphonates is the isoprenoid biosynthesis pathway enzyme farnesyl diphosphate synthase (FPPS). Based on our previous work on the inhibitory effect of sulfur-containing linear bisphosphonates against T. gondii, we investigated the potential synergistic interaction between one of these derivatives (1-[(n-heptylthio)ethyl]-1,1-bisphosphonate, C7S, or compound 6) with statins, which are potent inhibitors of the host 3-hydroxy-3-methyl glutaryl-coenzyme A reductase (3-HMG-CoA reductase)...
May 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28527270/-effect-of-antenatal-spiramycin-treatment-on-the-frequency-of-retinochoroiditis-due-to-congenital-toxoplasmosis-in-a-colombian-cohort
#19
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/28516409/survival-after-severe-rhabdomyolysis-following-monensin-ingestion
#20
Michela Blain, Alexander Garrard, Robert Poppenga, Betty Chen, Matthew Valento, Melissa Halliday Gittinger
INTRODUCTION: Monensin is a veterinary antibiotic with a narrow therapeutic window that has led to lethal intoxication in many animal species. Only two prior cases of human toxicity have been reported, both fatal. We present the first case of survival from severe toxicity following monensin ingestion. CASE: A 58-year-old man presented with 8 days of vomiting and abdominal pain. Due to delusions of central nervous system toxoplasmosis, he ingested 300 mg of monensin...
May 17, 2017: Journal of Medical Toxicology: Official Journal of the American College of Medical Toxicology
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