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https://www.readbyqxmd.com/read/29330674/advances-in-serological-imaging-techniques-and-molecular-diagnosis-of-toxoplasma-gondii-infection
#1
REVIEW
Ali Rostami, Panagiotis Karanis, Shirzad Fallahi
BACKGROUND: Toxoplasmosis is worldwide distributed zoonotic infection disease with medical importance in immunocompromised patients, pregnant women and congenitally infected newborns. Having basic information on the traditional and new developed methods is essential for general physicians and infectious disease specialists for choosing a suitable diagnostic approach for rapid and accurate diagnosis of the disease and, consequently, timely and effective treatment. METHODS: We conducted English literature searches in PubMed from 1989 to 2016 using relevant keywords and summarized the recent advances in diagnosis of toxoplasmosis...
January 12, 2018: Infection
https://www.readbyqxmd.com/read/29321415/cerebral-toxoplasmosis-diagnosed-by-nested-polymerase-chain-reaction-in-a-patient-with-rheumatoid-arthritis
#2
Jun Matsuura, Akihiro Fujii, Ikuko Mizuta, Kazumi Norose, Toshiki Mizuno
A 65-year-old woman with rheumatoid arthritis (RA) visited our hospital because of right facial sensory hypoesthesia. Cerebral toxoplasmosis was suspected on brain magnetic resonance imaging. We discontinued methotrexate for RA and started a sulfamethoxazole/trimethoprim (ST) mixture. Although ST treatment was interrupted because of adverse reactions, her prognosis was favorable. The Toxoplasma 18S rDNA gene was detected by nested-polymerase chain reaction (PCR) from blood and cerebrospinal fluid. Detecting the Toxoplasma 18S rDNA gene by nested-PCR is useful for the diagnosis and safer than a brain biopsy...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29314762/opportunistic-infections-in-patients-with-idiopathic-inflammatory-myopathies
#3
Ada Redondo-Benito, Adrian Curran, Ana Villar-Gomez, Ernesto Trallero-Araguas, Andreu Fernández-Codina, Iago Pinal-Fernandez, Jose Ángel Rodrigo-Pendás, Albert Selva-O'Callaghan
AIM: To describe the prevalence, clinical characteristics and risk factors of opportunistic infection (OI) in a cohort of patients with inflammatory myopathies, and compare mortality rates between those with and without OIs. METHODS: In total, 204 patients from our myositis cohort were reviewed to identify patients who had experienced an OI during the period 1986-2014. The patients' clinical characteristics, treatments received, and outcomes were systematically recorded...
January 5, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29274210/impact-of-alternative-treatment-approach-for-cerebral-toxoplasmosis-among-hiv-aids-patients-from-a-resource-poor-setting-in-burkina-faso
#4
Sanata Bamba, Jacques Zoungrana, Zakari Nikièma, Apoline K Sondo, Jean-Louis Ndiaye, Stéphane Bretagne
Cerebral toxoplasmosis is caused by the protozoan Toxoplasma gondii because of reactivation of latent tissue cysts in the Acquired Immunodeficiency Syndrome (AIDS) patients with severe immunosuppression. The objective of this study was to evaluate the benefit of co-trimoxazole in presumptive and prevention of cerebral toxoplasmosis in Human Immunodeficiency Virus (HIV)/AIDS patients at Bobo-Dioulasso Hospital in Burkina Faso from June 2012 to October 2014. ELISA and ELFA were performed on serum for the quantitative determination of IgG and IgM anti-T...
2017: Annals of Parasitology
https://www.readbyqxmd.com/read/29260298/screening-of-chemical-compound-libraries-identified-new-anti-toxoplasma-gondii-agents
#5
Oluyomi Stephen Adeyemi, Tatsuki Sugi, Yongmei Han, Kentaro Kato
Toxoplasma gondii is the etiological agent of toxoplasmosis, a common parasitic disease that affects nearly one-third of the human population. The primary infection can be asymptomatic in healthy individuals but may prove fatal in immunocompromised individuals. Available treatment options for toxoplasmosis patients are limited, underscoring the urgent need to identify and develop new therapies. Non-biased screening of libraries of chemical compounds including the repurposing of well-characterized compounds is emerging as viable approach to achieving this goal...
December 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29258242/successful-treatment-of-pulmonary-and-cerebral-toxoplasmosis-associated-with-pneumocystis-pneumonia-in-an-hiv-patient
#6
Marie-Françoise Rey, Charles Mary, Diane Sanguinetti, Stéphane Ranque, Christophe Bartoli, Coralie L'Ollivier
In both the post and pre combination antiretroviral therapy (cART) era, Pneumocystis jirovecii and Toxoplasma gondii remain common opportunistic infectious agents. The common manifestations are pneumonia for P. jirovecii and brain abscess for T. gondii. Nevertheless, co-infection remains rare, and pulmonary toxoplasmosis is scarce, or may be underestimated because of its similarity with Pneumocystis jirovecii pneumonia. We reported an uncommon case of an AIDS patient (6 CD4 + T cells/mm³) with both pulmonary and cerebral toxoplasmosis associated with pneumocystis pneumonia...
December 18, 2017: Diseases (Basel)
https://www.readbyqxmd.com/read/29245273/a-delayed-diagnosis-of-x-linked-hyper-igm-syndrome-complicated-with-toxoplasmic-encephalitis-in-a-child-a-case-report-and-literature-review
#7
Xiaoliang Liu, Kaiyu Zhou, Dan Yu, Xiaotang Cai, Yimin Hua, Hui Zhou, Chuan Wang
INTRODUCTION: The X-linked hyper-immunoglobulin M syndrome (XHIGM) is an uncommon primary combined immunodeficiency disease caused by CD40L gene mutations. A delayed or missed diagnosis of XHIGM is common and concerning, owing to atypical immunoglobulin profile and phenotype of some patients, low recognition, and limited knowledge of clinicians on XHIGM in some underdeveloped areas. Opportunistic infections are a prominent clinical feature of XHIGM. However, toxoplasma encephalitis occurs sporadically and is extremely rare in patients with XHIGM...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29229361/a-literature-review-on-maternal-fetal-and-reproductive-disorders-of-toxoplasma-gondii-infection
#8
REVIEW
Shirzad Fallahi, Ali Rostami, Malihe Nourollahpour Shiadeh, Hamed Behniafar, Shahrokh Paktinat
BACKGROUND: Toxoplasma gondii infection is one of the most prevalent infectious disease with worldwide distribution. Congenital toxoplasmosis is annually responsible for 1.20 million disability-adjusted life years around the world, but often it is overlooked many countries. METHODS: We performed an updated review to summarize the current researches on fetal, neonatal and maternal consequences of T. gondii infection and also adverse effects of toxoplasmosis on women reproductive organs...
December 8, 2017: Journal of Gynecology Obstetrics and Human Reproduction
https://www.readbyqxmd.com/read/29200930/survey-on-synergism-effect-of-ketotifen-in-combination-with-pyrimethamine-in-treatment-of-acute-murine-toxoplasmosis
#9
Mahbobeh Montazeri, Kian Rezaei, Mohammad Ali Ebrahimzadeh, Mehdi Sharif, Shahabeddin Sarvi, Ehsan Ahmadpour, Mohammad Taghi Rahimi, Abdol Satar Pagheh, Saeed Mehrzadi, Ahmad Daryani
Background: Standard treatment of toxoplasmosis is accompanied by severe side effects and low tolerability; accordingly, alternative medicines are critically needed. Ketotifen (KET) as a cell membrane stabilizer could be an appropriate inhibitor of Toxoplasma gondii (T. gondii) parasite entrance into the host cells. Therefore, the focus of current study is characterization of the anti-Toxoplasma activity of KET in the acute phase of toxoplasmosis in murine model as pre-treatment and post-treatment (before and after infection with RH strain)...
2017: Tropical Medicine and Health
https://www.readbyqxmd.com/read/29179785/toxoplasma-gondii-reorganizes-the-host-cell-architecture-during-spontaneous-cyst-formation-in-vitro
#10
T C Paredes-Santos, E S Martins-Duarte, W de Souza, M Attias, R C Vommaro
Toxoplasma gondii is an intracellular protozoan parasite that causes toxoplasmosis, a prevalent infection related to abortion, ocular diseases and encephalitis in immuno-compromised individuals. In the untreatable (and life-long) chronic stage of toxoplasmosis, parasitophorous vacuoles (PVs, containing T. gondii tachyzoites) transform into tissue cysts, containing slow-dividing bradyzoite forms. While acute-stage infection with tachyzoites involves global rearrangement of the host cell cytoplasm, focused on favouring tachyzoite replication, the cytoplasmic architecture of cells infected with cysts had not been described...
November 28, 2017: Parasitology
https://www.readbyqxmd.com/read/29178248/no-indication-of-increased-infection-rates-using-low-dose-alemtuzumab-instead-of-anti-thymocyte-globulin-as-graft-versus-host-disease-prophylaxis-before-allogeneic-stem-cell-transplantation
#11
Thomas Neumann, Laila Schneidewind, Thomas Thiele, Daniel Pink, Meike Schulze, Christian Schmidt, William Krüger
BACKGROUND: Alemtuzumab as part of the conditioning protocol is effective in reducing graft-versus-host disease (GvHD), but may be associated with increased infection rates, especially when using high doses (ie, 100 mg). METHODS: We performed a retrospective, single-centre, case-control study analysing the rates of neutropenic fever, cytomegalovirus (CMV) reactivation, Epstein-Barr virus (EBV) reactivation, clinical manifest toxoplasmosis, and clinical manifest human herpesvirus-6 (HHV6) infection using low-dose alemtuzumab in comparison with anti-thymocyte globulin (ATG) as GvHD prophylaxis before allogeneic stem cell transplantation...
November 27, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/29158278/characterization-of-plasmodium-atg3-atg8-interaction-inhibitors-identifies-novel-alternative-mechanisms-of-action-in-toxoplasma-gondii
#12
Joseph M Varberg, Kaice A LaFavers, Gustavo Arrizabalaga, William J Sullivan
Protozoan parasites, including the apicomplexan pathogens Plasmodium falciparum (malaria) and Toxoplasma gondii (toxoplasmosis) infect millions of people world-wide and represent a major human disease burden. Despite their prevalence, therapeutic strategies to treat these infections remain limited and are threatened by the emergence of drug resistance, highlighting the need for the identification of novel drug targets. Recently, homologues of the core autophagy proteins, including Atg8 and Atg3, were identified in many protozoan parasites...
November 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29156547/knowledge-and-practices-of-toxoplasmosis-among-clinical-laboratory-professionals-a-cross-sectional-study-in-durango-mexico
#13
Cosme Alvarado-Esquivel, Luis Francisco Sánchez-Anguiano, Luis Omar Berumen-Segovia, Jesús Hernández-Tinoco, Yazmin Del Rosario Rico-Almochantaf, Alfredo Cisneros-Camacho, Jorge Arturo Cisneros-Martínez
Background: The aim of this study was to determine the level of knowledge and practices about toxoplasmosis in a sample of clinical laboratory professionals in Mexico. Methods: 192 clinical laboratory professionals were surveyed. They were asked about (1) Toxoplasma gondii; (2) clinical manifestations, diagnosis, treatment, and epidemiology of toxoplasmosis; and (3) their practices with respect to toxoplasmosis. Results: The range of animals infected by T. gondii was known by 44.8% of participants. Clinical aspects of toxoplasmosis were known by up to 44...
November 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29153066/-age-related-prevalence-of-toxoplasmosis-among-pregnant-women-in-hatay-estimation-depending-on-model
#14
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/29141790/cerebral-toxoplasmosis-in-an-ms-patient-receiving-fingolimod
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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