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Toxoplasmosis

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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/29324806/immunocompetent-host-develops-mild-intestinal-inflammation-in-acute-infection-with-toxoplasma-gondii
#2
Paulo da Silva Watanabe, Aline Rosa Trevizan, Saulo Euclides Silva-Filho, Marcelo Biondaro Góis, João Luiz Garcia, Roberto Kenji Nakamura Cuman, Ana Cristina Breithaupt-Faloppa, Débora de Mello Gonçales Sant Ana, Gessilda de Alcantara Nogueira de Melo
Toxoplasma gondii (T. gondii) is the causative agent of toxoplasmosis, common zoonosis among vertebrates and high incidence worldwide. During the infection, the parasite needs to transpose the intestinal barrier to spread throughout the body, which may be a trigger for an inflammatory reaction. This work evaluated the inflammatory alterations of early T. gondii infection in peripheral blood cells, in the mesenteric microcirculation, and small intestinal tissue by measurement of MPO (myeloperoxidase) activity and NO (nitric oxide) level in rats...
2018: PloS One
https://www.readbyqxmd.com/read/29321415/cerebral-toxoplasmosis-diagnosed-by-nested-polymerase-chain-reaction-in-a-patient-with-rheumatoid-arthritis
#3
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/29320815/comparison-of-placenta-pcr-and-maternal-serology-of-aborted-women-for-detection-of-toxoplasma-gondii-in-ardabil-iran
#4
Somaie Matin, Gholamreza Shahbazi, Shervin Tabrizian Namin, Rouhallah Moradpour, Farideh Feizi, Hadi Piri-Dogahe
Primary maternal infection with toxoplasmosis during pregnancy is frequently associated with transplacental transmission of the parasite to the fetus. This study was conducted to test the utility of PCR assay to detect recent infections with Toxoplasma in aborted women at various gestational ages who referred to Obstetrics and Gynecology Department of Alavi Hospital in Ardabil during 2014 and 2016. Two hundred women with a history of single or repeated abortion were investigated in this study. Blood samples were tested for specific anti-Toxoplasma IgM and IgG antibodies by ELISA...
December 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29319244/seroprevalence-of-toxoplasma-gondii-among-pregnant-women-in-northeast-india
#5
Biswajyoti Borkakoty, Dipankar Biswas, Aniruddha Jakharia, Jagadish Mahanta
Objective: Toxoplasma gondii infection is primarily asymptomatic and one third of world's population is estimated to be infected by this protozoan parasite. This study was carried out to determine the seroprevalence of T. gondii infection among pregnant women from north east India, where data on this important parasitic infection is scanty. Methods: A total of 1141 serum archival samples collected from antenatal clinic attendees in 2007-09, were screened for T. gondii IgG by ELISA and analyzed with their socio demographic information...
October 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29317880/prevalence-of-toxoplasma-gondii-infection-among-healthy-blood-donors-in-northeast-of-iran
#6
Saeed Sadooghian, Hossein Mahmoudvand, Mohammad Ali Mohammadi, Naser Nazari Sarcheshmeh, Amir Tavakoli Kareshk, Hossein Kamiabi, Naser Zia-Ali
Background: This cross-sectional investigation aimed to evaluate the prevalence of IgM and IgG anti-Toxoplasma gondii antibodies and the associated risk factors among healthy blood donors in Khorasan Razavi Province, northeast of Iran from Nov 2014 to May 2015. Methods: Overall, 491 serum samples from apparently healthy blood donors referred the six biggest blood centers in Razavi Khorasan, Iran, were screened for IgG and IgM anti-T. gondii antibodies by enzyme-linked immunosorbent assay (ELISA)...
October 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/29314762/opportunistic-infections-in-patients-with-idiopathic-inflammatory-myopathies
#7
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/29309783/vaccine-potential-of-antigen-cocktails-composed-of-recombinant-toxoplasma-gondii-tgpi-1-rop2-and-gra4-proteins-against-chronic-toxoplasmosis-in-c3h-mice
#8
Mariano S Picchio, Vanesa R Sánchez, Nadia Arcon, Ariadna S Soto, Matías Perrone Sibilia, María de Los Angeles Aldirico, Mariela Urrutia, Moretta Rosalía, Ignacio M Fenoy, Alejandra Goldman, Valentina Martin
The development of an effective and safe vaccine to prevent Toxoplasma gondii infection is an important aim due to the great clinical and economic impact of this parasitosis. We have previously demonstrated that immunization with the serine protease inhibitor-1 (TgPI-1) confers partial protection to C3H/HeN and C57BL/6 mice. In order to improve the level of protection, in this work, we combined this novel antigen with ROP2 and/or GRA4 recombinant proteins (rTgPI-1+rROP2, rTgPI-1+rGRA4, rTgPI-1+rROP2+rGRA4) to explore the best combination against chronic toxoplasmosis in C3H/HeN mice...
January 5, 2018: Experimental Parasitology
https://www.readbyqxmd.com/read/29296260/evaluation-of-immune-responses-induced-by-gra7-and-rop2-genes-by-dna-vaccine-cocktails-against-acute-toxoplasmosis-in-balb-c-mice
#9
Hossein Vazini, Fatemeh Ghafarifar, Zohreh Sharifi, Abdolhosein Dalimi
Background: The severe damages of toxoplasmosis clearly indicate the need for the development of a more effective vaccine. Immunization with plasmid DNA is a promising vaccination technique. Therefore, GRA7 plasmid was prepared to be used as a vaccine. The purpose of this study was evaluation of immunization with cocktail DNA vaccine including plasmids encoding Toxoplasma gondii ROP2 and GRA7 in BALB/c mice. Methods: In this study, 733 bp of GRA7 gene was cloned in pCDNA3...
January 2018: Avicenna Journal of Medical Biotechnology
https://www.readbyqxmd.com/read/29290459/large-macular-scar-secondary-to-congenital-toxoplasmosis
#10
T Abdellaoui, N Laaribi, Y Ajhoun, R Zerrouk, F Elasri, K Reda, A Oubaaz
No abstract text is available yet for this article.
December 28, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29287987/observations-on-bradyzoite-biology
#11
Vincent Tu, Rama Yakubu, Louis M Weiss
Tachyzoites of the Apicomplexan Toxoplasma gondii cause acute infection, disseminate widely in their host, and eventually differentiates into a latent encysted form called bradyzoites that are found within tissue cysts. During latent infection, whenever transformation to tachyzoites occurs, any tachyzoites that develop are removed by the immune system. In contrast, cysts containing bradyzoites are sequestered from the immune system. In the absence of an effective immune response released organisms that differentiate into tachyzoites cause acute infection...
December 26, 2017: Microbes and Infection
https://www.readbyqxmd.com/read/29284420/an-evaluation-of-a-recombinant-multiepitope-based-antigen-for-detection-of-toxoplasma-gondii-specific-antibodies
#12
Khalid Hajissa, Robaiza Zakaria, Rapeah Suppian, Zeehaida Mohamed
BACKGROUND: The inefficiency of the current tachyzoite antigen-based serological assays for the serodiagnosis of Toxoplasma gondii infection mandates the need for acquirement of reliable and standard diagnostic reagents. Recently, epitope-based antigens have emerged as an alternative diagnostic marker for the achievement of highly sensitive and specific capture antigens. In this study, the diagnostic utility of a recombinant multiepitope antigen (USM.TOXO1) for the serodiagnosis of human toxoplasmosis was evaluated...
December 29, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29283732/seroprevalence-and-manifestations-of-ocular-toxoplasmosis-in-patients-with-schizophrenia
#13
Fábio Barreto Morais, Tiago Eugênio Faria E Arantes, Cristina Muccioli
PURPOSE: Recent studies have linked infectious agents such as Toxoplasma gondii to schizophrenia. We investigated the seroprevalence of T. gondii and conducted ophthalmologic examinations in schizophrenia patients and controls to identify lesions suggestive of ocular toxoplasmosis. METHODS: During 2015 and 2016, 34 schizophrenia patients and 85 healthy controls underwent ophthalmologic examination and anti-T. gondii IgG and IgM antibody measurements by chemiluminescence...
December 28, 2017: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/29280227/neuroimaging-of-dilated-perivascular-spaces-from-benign-and-pathologic-causes-to-mimics
#14
REVIEW
Jeffrey D Rudie, Andreas M Rauschecker, Seyed A Nabavizadeh, Suyash Mohan
Perivascular spaces (PVSs), also known as Virchow-Robin spaces, are pial-lined, fluid-filled structures found in characteristic locations throughout the brain. They can become abnormally enlarged or dilated and in rare cases can cause hydrocephalus. Dilated PVSs can pose a diagnostic dilemma for radiologists because of their varied appearance, sometimes mimicking more serious entities such as cystic neoplasms, including dysembryoplastic neuroepithelial tumor and multinodular and vacuolating neuronal tumor, or cystic infections including toxoplasmosis and neurocysticercosis...
December 27, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29274932/adverse-perinatal-conditions-associated-with-prenatally-detected-fetal-echogenic-bowel-in-nova-scotia
#15
Rachelle Findley, Victoria M Allen, Jo-Ann K Brock
OBJECTIVE: This study sought to estimate the association of adverse perinatal outcomes with pregnancies complicated by fetal echogenic bowel. METHODS: Data for pregnancies complicated with echogenic bowel identified in the second trimester were derived from the tertiary referral IWK Health Centre (Halifax, NS) Viewpoint Ultrasound Database augmented by medical chart review. The study was undertaken between 2003 and 2014. Rates of positive cytomegalovirus and toxoplasmosis infection were determined using maternal serology and amniocentesis results...
December 21, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
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
#16
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/29261738/toxoplasmosis-awareness-and-knowledge-among-medical-doctors-in-nigeria
#17
Akinwale Michael Efunshile, Charles John Elikwu, Pikka Jokelainen
Toxoplasma gondii is a zoonotic parasite causing high disease burden worldwide. A One Health approach is needed to understand, prevent, and control toxoplasmosis, while knowledge gaps in the One Health aspects have been identified among medical professionals in earlier studies. As a One Health collaboration between veterinary and medical fields, we surveyed the knowledge on toxoplasmosis among medical doctors in Nigeria. The knowledge questions, which the participants answered without consulting literature and colleagues, covered epidemiological One Health aspects as well as clinical interspecialty aspects of T...
2017: PloS One
https://www.readbyqxmd.com/read/29260298/screening-of-chemical-compound-libraries-identified-new-anti-toxoplasma-gondii-agents
#18
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
#19
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
#20
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)
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