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Toxocariasis

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https://www.readbyqxmd.com/read/27901644/clinical-profile-treatment-and-visual-outcome-of-ocular-toxocara-in-a-tertiary-eye-care-centre
#1
Ekta S Sahu, Bikramjit Pal, Tarun Sharma, Jyotirmay Biswas
PURPOSE: To determine the clinical features, treatment, and visual outcome in ocular toxocariasis. METHODS: A total of 16 cases diagnosed as ocular toxocariasis clinically and/or serologically were analyzed retrospectively. RESULTS: The mean age of the patients was 22.6 years. Cases were categorized into three clinical types with peripheral granuloma (43.7%) as the most common presentation. Of the patients, 10 (62.5%) had positive serum ELISA for T...
November 30, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27866477/cross-reactivity-of-the-31-kda-antigen-of-angiostrongylus-cantonensis-dealing-with-the-immunodiagnosis-of-meningoencephalitis
#2
Alessandra L Morassutti, Lisa N Rascoe, Sukwan Handali, Alexandre J DA Silva, Patricia P Wilkins, Carlos Graeff-Teixeira
The primary causative agent of eosinophilic meningoencephalitis (EoM) in endemic regions is the nematode Angiostrongylus cantonensis. The occurrence of EoM was previously restricted to countries in Southeast Asia and the Pacific Islands; however, more recently, it has been reported from other regions, including Brazil. The commonly used diagnosis is detection of specific antibody reactivity to the 31 kDa antigen, which is derived from female worm somatic extracts. Here we report the occurrence of cross-reactivity to this antigen in sera from other parasitic infections, especially those that may cause EoM, such as gnathostomiasis, toxocariasis, hydatidosis and strongyloidiasis...
November 21, 2016: Parasitology
https://www.readbyqxmd.com/read/27857820/detection-of-specific-antibody-reactivity-to-toxocara-larval-excretory-secretory-antigens-in-asthmatic-patients-5-15-years
#3
Mahdi Mosayebi, Latif Moini, Reza Hajihossein, Mojtaba Didehdar, Zahra Eslamirad
BACKGROUND & PURPOSE: Humans act as an intermediate host for Toxocara canis and Toxocara cati. Toxocara may be an important risk factor for asthma in humans. The aim of the present study was to evaluate immunoglobulin G (IgG) anti-Toxocara canis antibody, using enzyme-linked immunosorbent assay (ELISA) in asthmatic patients (aged 5-15 years), referring to a clinic of pulmonary diseases in Arak, Iran. MATERIALS & METHODS: In this bi-group cross sectional study, serum samples were collected from 110 children with confirmed asthma and 70 children without asthma within one year...
2016: Open Microbiology Journal
https://www.readbyqxmd.com/read/27845205/comparative-transcriptomic-analyses-of-male-and-female-adult-toxocara-canis
#4
Rong-Qiong Zhou, Guang-Xu Ma, Pasi K Korhonen, Yong-Li Luo, Hong-Hong Zhu, Yong-Fang Luo, Robin B Gasser, Qing-You Xia
Toxocariasis is an important, neglected zoonosis caused mainly by Toxocara canis. Although our knowledge of helminth molecular biology is improving through completed draft genome projects, there is limited detailed information on the molecular biology of Toxocara species. Here, transcriptomic sequencing of male and female adult T. canis and comparative analyses were conducted. For each sex, two-thirds (66-67%) of quality-filtered reads mapped to the gene set of T. canis, and at least five reads mapped to each of 16,196 (87...
November 11, 2016: Gene
https://www.readbyqxmd.com/read/27812663/toxocara-spp-seroprevalence-in-pregnant-women-in-bras%C3%A3-lia-brazil
#5
Lívia Custódio Pereira, Guita Rubinsky Elefant, Yanna Medeiros Nóbrega, Tamires Vital, Nadjar Nitz, Lenora Gandolfi, Riccardo Pratesi, Mariana Hecht
INTRODUCTION: The impact of gestational toxocariasis is an understudied topic on female reproductive health. We estimated anti-Toxocara IgG prevalence among pregnant women in Brasília, Brazil, and investigated the association of the infection with history of abortion and contact with pets. METHODS: Infection was diagnosed using ELISA with excretory/secretory antigens. Participant information was obtained via questionnaires. RESULTS: Of 311 pregnant women, 23 were anti-Toxocara IgG positive...
September 2016: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/27809350/clinical-usefulness-of-western-blotting-and-elisa-avidity-for-the-diagnosis-of-human-toxocariasis
#6
Monika Rudzińska, Beata Kowalewska, Katarzyna Sikorska
The serodiagnosis of human toxocariasis is difficult. Specific IgGs detected routinely with ELISA based on Toxocara excretory-secretory (TES) antigens often persist for years at an elevated level, which does not allow either the differentiation between an active and persistent infection or monitoring the effect of treatment. Additionally, false positive results may occur in co-infections with other helminths due to cross-reactions. We evaluated the usefulness of an IgG avidity index (AI) and a Western blotting (WB) IgG in the diagnosis of patients suspected of Toxocara infection...
November 3, 2016: Parasite Immunology
https://www.readbyqxmd.com/read/27800525/staphylococcus-aureus-endocarditis-as-a-complication-of-toxocariasis-associated-endomyocarditis-with-fibrosis-a-case-report
#7
Esther Kuenzli, Niklaus Labhardt, Gianmarco Balestra, Maja Weisser, Michael J Zellweger, Johannes Blum
Complications associated with Toxocara canis infection are rare. We present a case of a patient with Staphylococcus aureus endocarditis as a complication of an endomyocardial fibrosis caused by T canis. The epidemiological, pathological, and clinical features of this rare complication are described here.
September 2016: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/27775459/intravitreal-administration-of-ranibizumab-and-bevacizumab-for-choroidal-neovascularization-secondary-to-ocular-toxocariasis-a-case-report
#8
Do Yeh Yoon, Se Joon Woo
PURPOSE: To report a case of a choroidal neovascularization (CNV) secondary to ocular toxocariasis treated with intravitreal injections of anti-vascular endothelial growth factor (VEGF) agents. METHODS: A 66-year-old woman presented with decreased vision (20/40) and metamorphopsia in the right eye. Fundus examination revealed inferotemporal retinal whitish lesion and subretinal hemorrhage in the right eye. RESULTS: She was diagnosed with ocular toxocariasis based on the clinical features and positive serological anti-toxocara antibody test result...
October 24, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27760094/-ocular-toxocariasis-in-a-boy-with-idiopathic-nephrotic-syndrome-a-case-report
#9
Agnieszka Antonowicz, Piotr Skrzypczyk, Beata Kępa, Małgorzata Pańczyk-Tomaszewska
: Toxocariasis is a common zoonosis caused by infection with Toxocara canis or cati larvae. Ocular toxocariasis is one of the forms of infestation found in 1/1,000 - 1/10,000 children. Children with idiopathic nephrotic syndrome (INS) are at high risk of infections, also parasitic infestations, which can, in turn, cause relapses of the disease. A CASE REPORT: We present a case of a 6-year-old boy with steroiddependent nephrotic syndrome. The disease started at age of 2, the boy had 9 relapses of INS, and was treated with oral prednisone, levamisole, and cyclophosphamide...
October 19, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27746165/kinetic-and-avidity-of-igy-anti-toxocara-antibodies-in-experimentally-infected-chickens
#10
Ricardo da Silva Raposo, Vamilton Alvares Santarém, Yslla Fernanda Fitz Balo Merigueti, Guita Rubinsky-Elefant, Letícia Maria de Lima Cerazo, Ludimilla Pereira, Bianca Pelegi Zampieri, Aristeu Vieira da Silva, Cecília Braga Laposy
Toxocariasis is a geohelminth zoonosis with worldwide distribution, mainly transmitted through the ingestion of embryonated eggs of nematodes of the Toxocara genus. The disease can also be transmitted to humans as a result of eating raw or undercooked meat of paratenic hosts, such as chickens. Here, we standardized an enzyme-linked immunosorbent assay (ELISA) for evaluating experimentally the kinetic and avidity index (AI) of IgY in broiler chickens infected with different doses of Toxocara canis eggs (G1:100; G2: 1000; and G3: 5000; n = 12 per group)...
October 13, 2016: Experimental Parasitology
https://www.readbyqxmd.com/read/27726522/the-spectrum-of-uveitis-in-southern-vietnam
#11
Myhanh Nguyen, Jay Siak, Soon-Phaik Chee, Vo Quang Hong Diem
PURPOSE: To describe the pattern of uveitis among Vietnamese at two eye hospitals in Southern Vietnam. METHODS: We retrospectively reviewed the charts of 212 consecutive uveitis cases that presented to two eye hospitals in Ho Chi Minh City, Vietnam, from July 2011 to February 2015. The patients were identified from a database maintained by the hospitals. Patients with keratitis, episcleritis, orbital inflammation, post-surgical endophthalmitis, traumatic iritis, and corneal graft rejection were excluded...
October 11, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27698276/human-toxocariasis-prevalence-and-factors-associated-with-biosafety-in-research-laboratories
#12
Gabriela Torres Mattos, Paula Costa Dos Santos, Paula de Lima Telmo, Maria Elisabeth Aires Berne, Carlos James Scaini
Human toxocariasis is a neglected parasitic disease worldwide. Researchers studying this disease use infectious strains of Toxocara for experiments. Health workers are at risk in the course of their daily routine and must adhere to biosafety standards while carrying out the activities. Researchers on biosafety concerning working with these parasites are insufficient. The aim of this study was to determine the rate of seroprevalence of Toxocara species among health-care research laboratory workers (professors, technicians, and students), and to investigate the risk factors of Toxocara infection associated with laboratory practices...
October 3, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27638150/proteomic-analysis-of-toxocara-canis-excretory-and-secretory-tes-proteins
#13
Rita Leal Sperotto, Frederico Schmitt Kremer, Maria Elisabeth Aires Berne, Luciana F Costa de Avila, Luciano da Silva Pinto, Karina Mariante Monteiro, Karin Silva Caumo, Henrique Bunselmeyer Ferreira, Natália Berne, Sibele Borsuk
Toxocariasis is a neglected disease, and its main etiological agent is the nematode Toxocara canis. Serological diagnosis is performed by an enzyme-linked immunosorbent assay using T. canis excretory and secretory (TES) antigens produced by in vitro cultivation of larvae. Identification of TES proteins can be useful for the development of new diagnostic strategies since few TES components have been described so far. Herein, we report the results obtained by proteomic analysis of TES proteins using a liquid chromatography-tandem mass spectrometry (LC-MS/MS) approach...
September 13, 2016: Molecular and Biochemical Parasitology
https://www.readbyqxmd.com/read/27622437/production-and-evaluation-of-the-recombinant-antigen-tes-30-of-toxocara-canis-for-the-immunodiagnosis-of-toxocariasis
#14
Ana M Olave, Jairo A Mesa, Jorge H Botero, Edwin B Patiño, Gisela M García, Juan F Alzate
INTRODUCTION: Toxocara canis is a pathogenic nematode of canines which can be accidentally transmitted to humans. Although serology is the most important diagnostic tool for this zoonosis, diagnostic kits use crude excretion/secretion antigens, most of them being glycoproteins which are not species-specific and may cross-react with antibodies generated against other parasites.  OBJECTIVES: To produce the rTES-30 recombinant antigen of Toxocara canis and evaluate it in the immunodiagnosis of toxocariasis...
2016: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/27595647/seroprevalence-of-fascioliasis-toxocariasis-strongyloidiasis-and-cysticercosis-in-blood-samples-diagnosed-in-medic-medical-center-laboratory-ho-chi-minh-city-vietnam-in-2012
#15
Toan Nguyen, Fei Wen Cheong, Jonathan Wee Kent Liew, Yee Ling Lau
BACKGROUND: Despite the global effort against neglected tropical diseases (NTDs), developing countries with middle to low income are still burdened by them. Vietnam has been undergoing substantial economic growth and urbanization, but underprivileged people living in rural and suburban areas are still having little access to public health infrastructure and proper sanitation. Hitherto, limited information is available for seroprevalence and risk factors of several parasitic diseases in Vietnam...
2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27594568/seroprevalence-of-toxocara-spp-in-a-rural-population-in-central-african-gabon
#16
Felix Lötsch, Markus Obermüller, Johannes Mischlinger, Ghyslain Mombo-Ngoma, Mirjam Groger, Akim Ayola Adegnika, Selidji Todagbe Agnandji, Renate Schneider, Herbert Auer, Michael Ramharter
Toxocara spp. are zoonotic parasites with global distribution infecting humans by incidental ingestions of eggs shed in feces of dogs or cats. High seroprevalences have been reported from several regions of Africa, however data from the Central African region remain limited. Although several clinical entities caused by larvae of Toxocara spp. have been described, the public heath impact of this infection has so far often been neglected. This study was conducted to estimate the prevalence in a rural central African population...
December 2016: Parasitology International
https://www.readbyqxmd.com/read/27594294/a-rare-cause-of-hypereosinophilia-a-case-report
#17
Alparslan Merdin, Emine Ogur, Çiğdem Çiçek Kolak, Fatma Avcı Merdin
Toxocariasis is a parasitic disease caused by the larval stage of Toxocara cati and T. canis, which live in the intestinal system of cats (T. cati) and dogs (T. canis). Infective eggs can enter the gastrointestinal system by the oral route via foods contaminated with feces of dogs or cats or via dirty contaminated hands. The larvae penetrate the small intestine and migrate to visceral organs by systemic circulation. Hypereosinophilia is a common finding in the tissue invasion of parasites. Serological methods are the principle diagnostic methods for toxocariasis...
December 0: Türkiye Parazitolojii Dergisi
https://www.readbyqxmd.com/read/27571878/the-occurrence-of-toxocara-species-in-naturally-infected-broiler-chickens-revealed-by-molecular-approaches
#18
M Zibaei, S M Sadjjadi, S Maraghi
Consuming raw and undercooked meat is known to enhance the risk of human toxocariasis because Toxocara species have a wide range of paratenic hosts, including chickens. The aim of this study was to identify species of Toxocara in naturally infected broiler chickens using molecular approaches. A polymerase chain reaction (PCR) method was used for the differentiation of Toxocara canis and Toxocara cati larvae recovered from tissues and organs, and identified by microscopic observations. Thirty-three 35- to 47-day-old broiler chickens were used for examination of Toxocara larvae...
August 30, 2016: Journal of Helminthology
https://www.readbyqxmd.com/read/27555706/demographic-and-clinical-features-of-pediatric-uveitis-at-a-tertiary-referral-center-in-iran
#19
Mansour Rahimi, Marjan Oustad, Afsaneh Ashrafi
PURPOSE: To determine the clinical features and distribution of uveitis in the pediatric age group at a referral eye care center in Shiraz, South Iran. MATERIALS AND METHODS: All new cases of uveitis in patients 18-year-old or younger referred from January 2007 to December 2013 were enrolled in this study. The patient underwent a complete history of systemic and ocular diseases, comprehensive ophthalmic examination. Patients were classified according to the International Uveitis Study Group definitions...
July 2016: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/27538451/ocular-toxocariasis-presenting-as-bilateral-scleritis-with-suspect-retinal-granuloma-in-the-nerve-fiber-layer-a-case-report
#20
Kang Yeun Pak, Sung Who Park, Ik Soo Byon, Ji Eun Lee
BACKGROUND: This report details ocular toxocariasis presenting as bilateral scleritis with suspect retinal granuloma in the nerve fiber layer. CASE PRESENTATION: The patient presented with scleritis, which did not improve with systemic steroid. Intraocular pressure was elevated, and well demarcated hyper-reflective round lesion were noted in both eyes. He had a history of general ache and concurrent onset of ocular symptoms the day after eating raw meat. Systemic work-ups revealed no remarkable abnormalities except antibody for toxocara...
2016: BMC Infectious Diseases
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