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toxoplasmosis treatment

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https://www.readbyqxmd.com/read/29141790/cerebral-toxoplasmosis-in-an-ms-patient-receiving-fingolimod
#1
Alejandro Enriquez-Marulanda, Jaime Valderrama-Chaparro, Laura Parrado, Juan Diego Vélez, Ana Maria Granados, Jorge Luis Orozco, Jairo Quiñones
Multiple Sclerosis (MS) is an autoimmune disease in which lymphocytes target putative myelin antigens in the CNS, causing inflammation and neurodegeneration. Fingolimod (FTY720) is an immunosuppressive drug used as a second line therapy for relapsing forms of MS due to its safety profile and good response to treatment. Despite its safety, there are still concerns about the possibility of Fingolimod being linked to the development of opportunistic infections like disseminated varicella zoster infections and herpes simplex encephalitis...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29136773/the-potential-use-of-melatonin-to-treat-protozoan-parasitic-infections-a-review
#2
REVIEW
Ahmad Daryani, Mahbobeh Montazeri, Abdol Satar Pagheh, Mehdi Sharif, Shahabeddin Sarvi, Azam Hosseinzadeh, Russel J Reiter, Ramtin Hadighi, Mohammad Taghi Joghataei, Habib Ghaznavi, Saeed Mehrzadi
Melatonin (N-acetyl-5-methoxytryptamine) is a circadian hormone produced in vertebrates by the pineal gland and other organs. Melatonin is believed to influence immune cells leading to modulation of the proliferative response of stimulated lymphocytes as well as cytokine production. Due to the antioxidant and immunomodulatory effects of melatonin, it is suggested that this molecule could be a therapeutic alternative agent to fight bacterial, viral, and parasitic infections by a variety of mechanisms. Herein, we review the effects of melatonin on the cell biology of protozoan parasites and host's immune response...
November 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29117879/human-parasitology-worldwide-research
#3
Jose Antonio Garrido-Cardenas, Concepción Mesa-Valle, Francisco Manzano-Agugliaro
In this article, the trends in human parasitology have been studied through the analysis of the number of publications in this area. The parameters studied were: number of articles, language, countries and institutions with the highest number of publications, and keywords with greater presence in the articles of human parasitology. The results of the analysis confirm the growing interest in this area, observing an exponential growth in the number of publications in the last decades. We also verified that the main country in terms of scientific production is the USA, although among the most important institutions, we find non-US centres such as the Oswaldo Cruz Foundation and the London School of Hygiene and Tropical Medicine...
November 9, 2017: Parasitology
https://www.readbyqxmd.com/read/29091133/histopathology-of-murine-toxoplasmosis-under-treatment-with-dialyzable-leukocyte-extract
#4
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/29075257/the-p2x7-receptor-mediates-toxoplasma-gondii-control-in-macrophages-through-canonical-nlrp3-inflammasome-activation-and-reactive-oxygen-species-production
#5
Aline Cristina Abreu Moreira-Souza, Cássio Luiz Coutinho Almeida-da-Silva, Thuany Prado Rangel, Gabrielle da Costa Rocha, Maria Bellio, Dario Simões Zamboni, Rossiane Claudia Vommaro, Robson Coutinho-Silva
Toxoplasma gondii (T. gondii) is the protozoan parasite that causes toxoplasmosis, a potentially fatal disease to immunocompromised patients, and which affects approximately 30% of the world's population. Previously, we showed that purinergic signaling via the P2X7 receptor contributes to T. gondii elimination in macrophages, through reactive oxygen species (ROS) production and lysosome fusion with the parasitophorous vacuole. Moreover, we demonstrated that P2X7 receptor activation promotes the production of anti-parasitic pro-inflammatory cytokines during early T...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29040020/first-report-of-toxoplasma-gondii-infection-in-tuberculosis-patients-in-china
#6
Yun-Jiao Zhao, Yun-Hong Zhao, Xiang-Yan Zhang, Xue-Juan Sun, Yu-Qin Liu, Yan-Jie Hou, Jing-Qiu Wu, Hui Jia, Yi-Nan Han, Wei Dong, Shi-Ming Yan, Ai-Dong Qian
In recent years, coinfection of tuberculosis (TB) and parasitosis in humans is an emerging problem in coendemic areas, which has been increasingly highlighted in developing countries. However, there is limited information about the prevalence of Toxoplasma gondii infection in TB patients. Therefore, through a case-control study, 924 TB patients hospitalized for diacrisis or treatment in northeastern and eastern China, and 924 control subjects from the general population of the same region matched with gender, age, and residence were examined for the presence of IgG and IgM antibodies to T...
October 17, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29020481/ocular-toxoplasmosis-in-tropical-areas-analysis-and-outcome-of-190-patients-from-a-multicenter-collaborative-study
#7
Philemon K Huang, Chen Jianping, Daniel Vitor Vasconcelos-Santos, Jacqueline Souza Dutra Arruda, Parthopratim Dutta Majumder, Eliza Anthony, Sudha K Ganesh, Jyotirmay Biswas, Ho Su Ling, Stephen C Teoh, Rupesh Agrawal
PURPOSE: To describe clinical findings and outcomes for ocular toxoplasmosis in an international multicenter collaborative study. METHODS: Retrospective analysis of 190 patients diagnosed with ocular toxoplasmosis from three study sites (Brazil, India, and Singapore). RESULTS: There were 93 (48.9%) females with a mean age of 32.8 years. The most common symptoms were isolated blurring of vision (36.8%), followed by blurring of vision with floaters (21...
October 11, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/28933846/inhibition-of-calcium-dependent-protein-kinase-1-cdpk1-by-pyrazolopyrimidine-analogs-decreases-establishment-and-reoccurrence-of-central-nervous-system-disease-by-toxoplasma-gondii
#8
Florentine U Rutaganira, Jennifer Barks, Mary Savari Dhason, Qiuling Wang, Michael S Lopez, Shaojun Long, Joshua B Radke, Nathaniel G Jones, Amarendar R Maddirala, James W Janetka, Majida El Bakkouri, Raymond Hui, Kevan M Shokat, L David Sibley
Calcium dependent protein kinase 1 (CDPK1) is an essential enzyme in the opportunistic pathogen Toxoplasma gondii. CDPK1 controls multiple processes that are critical to the intracellular replicative cycle of T. gondii including secretion of adhesins, motility, invasion, and egress. Remarkably, CDPK1 contains a small glycine gatekeeper residue in the ATP binding pocket making it sensitive to ATP-competitive inhibitors with bulky substituents that complement this expanded binding pocket. Here we explored structure-activity relationships of a series of pyrazolopyrimidine inhibitors of CDPK1 with the goal of increasing selectivity over host enzymes, improving antiparasite potency, and improving metabolic stability...
October 9, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28920819/disseminated-toxoplasmosis-in-a-captive-adult-dromedary-camel-camelus-dromedarius
#9
Jennifer Riley, Michael M Garner, Matti Kiupel, Elizabeth E Hammond
An 11-yr-old dromedary camel (Camelus dromedarius) at a zoo in south Florida presented with diarrhea while being treated with enrofloxacin and dexamethasone for a chronic skin condition. Three weeks after initiation of therapy with dexamethasone, the camel developed diarrhea, which worsened despite treatment with antibiotics. The animal became increasingly debilitated, developed hemorrhagic diarrhea, declined rapidly over the next 3 days, and died despite aggressive fluid therapy and supportive care. Histologic examination revealed intralesional protozoal tissue cysts consistent with Toxoplasma gondii in the intestines, lungs, and liver, as well as lymphoid depletion of the spleen suggesting immunosuppression...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28883820/decidual-macrophage-functional-polarization-during-abnormal-pregnancy-due-to-toxoplasma-gondii-role-for-lilrb4
#10
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
#11
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...
September 6, 2017: Drugs in R&D
https://www.readbyqxmd.com/read/28838776/the-effect-of-lopinavir-ritonavir-and-lopinavir-ritonavir-loaded-plga-nanoparticles-on-experimental-toxoplasmosis
#12
Iman Fathy Abou-El-Naga, Eman Dorry El Kerdany, Rasha Fadly Mady, Thanaa Ibrahim Shalaby, Enas Mohammed Zaytoun
A marked reduction has been achieved in the incidence and clinical course of toxoplasmic encephalitis after the introduction of protease inhibitors within the treatment regimen of HIV (HIV-PIs). This work was undertaken to study for the first time, the efficacy of HIV-PIs, lopinavir/ritonavir (L/R), as a therapeutic agent in acute experimental toxoplasmosis. Lopinavir/ritonavir (L/R) were used in the same ratio present in aluvia, a known HIV-PIs drug used in the developing countries in the treatment regimens of AID's patient...
December 2017: Parasitology International
https://www.readbyqxmd.com/read/28835680/transcriptome-analysis-of-ankylosing-spondylitis-patients-before-and-after-tnf-%C3%AE-inhibitor-therapy-reveals-the-pathways-affected
#13
X B Wang, J J Ellis, D J Pennisi, X Song, J Batra, K Hollis, L A Bradbury, Z Li, T J Kenna, M A Brown
Tumor necrosis factor-α (TNF-α) inhibitors are highly effective in suppressing inflammation in ankylosing spondylitis (AS) patients, and operate by suppression of TFN-α and downstream immunological pathways. To determine the mechanisms of action of TNF-α inhibitors in AS patients, we used transcriptomic and bioinformatic approaches on peripheral blood mononuclear cells from AS patients pre and post treatment. We found 656 differentially expressed genes, including the genome-wide significant AS-associated genes, IL6R, NOTCH1, IL10, CXCR2 and TNFRSF1A...
September 2017: Genes and Immunity
https://www.readbyqxmd.com/read/28835429/a-rare-case-of-pulmonary-toxoplasmosis-in-a-patient-with-undifferentiated-inflammatory-arthritis-on-chronic-methotrexate-and-corticosteroid-therapy
#14
Abdullateef Abdulkareem, Ryan Steven D'Souza, Nitin Patel, Anthony A Donato
Pulmonary toxoplasmosis is a serious pulmonary condition caused by the protozoan Toxoplasma gondii It typically affects immunocompromised patients presenting acutely with cough, fever, myalgias, arthralgias and lymphadenopathy, and chronically with persistent cough and dyspnoea. Because of its protean features, it can mimic many more common lung conditions in the immunocompromised patient, including atypical pneumonia, Pneumocystis pneumonia and interstitial lung disease. In this article, we present the case of a 55-year-old woman who presented to our hospital with persistent dyspnoea and cough, initially suspected to have an arthritis-related interstitial lung disease...
August 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28819470/causes-of-death-and-factors-associated-with-early-mortality-of-hiv-infected-adults-admitted-to-korle-bu-teaching-hospital
#15
Adriana Saavedra, Nia Campinha-Bacote, Maurice Hajjar, Ernest Kenu, Fizza Syeda Gillani, Adjoa Obo-Akwa, Margaret Lartey, Awewura Kwara
INTRODUCTION: This study sought to identify common causes of death as well as the factors associated with the high inpatient mortality rate of HIV-infected patients at the Korle-Bu Teaching Hospital (KBTH). METHODS: The retrospective study reviewed the medical records of 547 HIV-infected adults aged 18 years or older admitted to the KBTH between the months of January 2012 and October 2013. Using standardized abstraction forms, clinical and demographic data of eligible patients was collected...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28818085/a-rare-case-of-acute-toxoplasmosis-in-a-stray-dog-due-to-infection-of-t-gondii-clonal-type-i-public-health-concern-in-urban-settings-with-stray-animals
#16
Sergio Migliore, Salvatore La Marca, Cristian Stabile, Vincenzo Di Marco Lo Presti, Maria Vitale
BACKGROUND: Typing of Toxoplasma gondii strains is important in epidemiological surveys, to understand the distribution and virulence of different clones of the parasite among human and animal populations. Stray dogs can be consider sentinel animals for contaminated environments playing an important but probably under- evaluated role in the epidemiology of T. gondii. We reported a rare case of acute toxoplasmosis in a stray dog due to clonal type I infection. The clonal type I, sporadic in Europe, is frequently associated with severe toxoplasmosis in humans and the control of its circulation is particularly relevant for public health...
August 17, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28803905/azithromycin-treatment-is-able-to-control-the-infection-by-two-genotypes-of-toxoplasma-gondii-in-human-trophoblast-bewo-cells
#17
Mayara Ribeiro, Priscila Silva Franco, Janice Buiate Lopes-Maria, Mariana Bodini Angeloni, Bellisa de Freitas Barbosa, Angelica de Oliveira Gomes, Andressa Silva Castro, Rafaela José da Silva, Fernanda Chaves de Oliveira, Iliana Claudia Balga Milian, Olindo Assis Martins-Filho, Francesca Ietta, José Roberto Mineo, Eloisa Amália Vieira Ferro
Trophoblast infection by Toxoplasma gondii plays a pivotal role in the vertical transmission of toxoplasmosis. Here, we investigate whether the antibiotic therapy with azithromycin, spiramycin and sulfadiazine/pyrimethamine are effective to control trophoblast infection by two Brazilian T. gondii genotypes, TgChBrUD1 or TgChBrUD2. Two antibiotic protocols were evaluated, as follow: i) pre-treatment of T. gondii-tachyzoites with selected antibiotics prior trophoblast infection and ii) post-treatment of infected trophoblasts...
October 2017: Experimental Parasitology
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
#18
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/28774497/activity-of-rosuvastatin-in-tachyzoites-of-toxoplasma-gondii-rh-strain-in-hela-cells
#19
Raquel Arruda Sanfelice, Laís Fernanda Machado, Larissa Rodrigues Bosqui, Milena Menegazzo Miranda-Sapla, Fernanda Tomiotto-Pellissier, Gabriela de Alcântara Dalevedo, Dielle Ioris, Guilherme Fonseca Reis, Luciano Aparecido Panagio, Italmar Teodorico Navarro, Juliano Bordignon, Ivete Conchon-Costa, Wander Rogério Pavanelli, Ricardo Sergio Almeida, Idessania Nazareth Costa
Due to the toxicity of conventional medication in toxoplasmosis, some drugs are being studied for treating this infection, such as statins, especially rosuvastatin compound, which is efficient in inhibiting the initial isoprenoid biosynthesis processes in humans and the parasite. The goal of this study was to assess the activity of rosuvastatin in HeLa cells infected with the RH strain of T. gondii. In the experiment, HeLa cells (1 × 10(5)) were infected with tachyzoites of T. gondii (5 × 10(5)). After the experimental infection, we assessed the number of infected cells and the amount of intracellular tachyzoites...
October 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28769551/intravitreal-aflibercept-for-choroidal-neovascularization-associated-with-chorioretinitis-a-pilot-study
#20
Andrii R Korol, Oleksandra Zborovska, Taras Kustryn, Oleksandra Dorokhova, Nataliya Pasyechnikova
PURPOSE: The purpose of this study was to evaluate the potential benefits of intravitreal aflibercept injections for the treatment of choroidal neovascularization (CNV) secondary to chorioretinitis. METHODS: In this uncontrolled, prospective cohort study, 15 eyes of 14 consecutive patients affected by CNV associated with ocular toxoplasmosis were treated with intravitreal aflibercept (2 mg) pro re nata and observed over a 12-month follow-up period. The primary outcome was the change in best-corrected visual acuity (BCVA) from baseline to month 12...
2017: Clinical Ophthalmology
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