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Strongyloides stercoralis

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https://www.readbyqxmd.com/read/28719325/serologic-monitoring-of-public-health-interventions-against-strongyloides-stercoralis
#1
Paola Vargas, Alejandro J Krolewiecki, Adriana Echazú, Marisa Juarez, Pamela Cajal, Jose F Gil, Nicolás Caro, Julio Nasser, Patrick Lammie, Rubén O Cimino
Northwestern Argentina is endemic for soil-transmitted helminths, and annual deworming programs are carried out in prioritized areas. High prevalence of Strongyloides stercoralis was reported in this area; therefore, control programs including ivermectin are being evaluated. The NIE-enzyme linked immunosorbent assay (ELISA) was used for this purpose. In this community trial, two groups of patients, classified according to housing and living conditions were evaluated. Simultaneous with baseline survey, Group 1 was moved to new households with access to improved water and sanitation facilities (W and S), where deworming (MDA, massive drug administration) took place within 1 month; whereas Group 2 received MDA but remained living with unimproved W and S...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28705595/excretory-secretory-antigens-of-strongyloides-venezuelensis-applied-to-igg-detection-in-human-strongyloidosis
#2
Renata A Cunha, Edson F G de Carvalho, José E N de Sousa, Julia M Costa-Cruz
Strongyloidosis is a neglected disease that affects millions of people around the world. The cases that particularly deserve attention are those related to hyperinfection, mainly in immunocompromised patients. In this sense, there is a need to improve the serological diagnosis of this helminth. The objective of this study was therefore to produce and characterize excretory/secretory (E/S) antigens of Strongyloides venezuelensis infective larvae (L3) for use as a heterologous antigen in the diagnosis of human strongyloidosis and other parasitic infection groups...
July 10, 2017: Parasitology International
https://www.readbyqxmd.com/read/28691033/prevalence-of-toxoplasma-gondii-and-other-gastrointestinal-parasites-in-domestic-cats-from-households-in-thika-region-kenya
#3
Adele Nyambura Njuguna, John Maina Kagira, Simon Muturi Karanja, Maina Ngotho, Lucy Mutharia, Naomi Wangari Maina
Gastrointestinal (GIT) parasites of domestic cats (Felis catus) not only cause morbidity but are also potential zoonotic agents. The current study aimed at establishing the prevalence of GIT parasites in cats kept by households in Thika region, Kenya. Fecal samples were collected randomly from 103 cats and analyzed for presence of parasites using standard parasitological methods. In descending order, the prevalence of the detected protozoa parasites was Isospora spp. 43.7% (95% CI: 40.4-47%), Cryptosporidium spp...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28687738/a-possible-origin-population-of-pathogenic-intestinal-nematodes-strongyloides-stercoralis-unveiled-by-molecular-phylogeny
#4
Eiji Nagayasu, Myo Pa Pa Thet Hnin Htwe Aung, Thanaporn Hortiwakul, Akina Hino, Teruhisa Tanaka, Miwa Higashiarakawa, Alex Olia, Tomoyo Taniguchi, Soe Moe Thu Win, Isao Ohashi, Emmanuel Igwaro Odongo-Aginya, Khin Myo Aye, Mon Mon, Kyu Kyu Win, Kei Ota, Yukari Torisu, Siripen Panthuwong, Eisaku Kimura, Nirianne M Q Palacpac, Taisei Kikuchi, Tetsuo Hirata, Shidow Torisu, Hajime Hisaeda, Toshihiro Horii, Jiro Fujita, Wah Win Htike, Haruhiko Maruyama
Humans and dogs are the two major hosts of Strongyloides stercoralis, an intestinal parasitic nematode. To better understand the phylogenetic relationships among S. stercoralis isolates infecting humans and dogs and to assess the zoonotic potential of this parasite, we analyzed mitochondrial Cox1, nuclear 18S rDNA, 28S rDNA, and a major sperm protein domain-containing protein genes. Overall, our analyses indicated the presence of two distinct lineages of S. stercoralis (referred to as type A and type B). While type A parasites were isolated both from humans and dogs in different countries, type B parasites were found exclusively in dogs, indicating that the type B has not adapted to infect humans...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28676845/th2-1-hybrid-cells-occurring-in-murine-and-human-strongyloidiasis-share-effector-functions-of-th1-cells
#5
Cristin N Bock, Subash Babu, Minka Breloer, Anuradha Rajamanickam, Yukhti Boothra, Marie-Luise Brunn, Anja A Kühl, Roswitha Merle, Max Löhning, Susanne Hartmann, Sebastian Rausch
Infections by the soil-transmitted threadworm Strongyloides stercoralis affect 30-100 million people worldwide, predominantly in tropic and sub-tropic regions. Here we assessed the T helper cell phenotypes in threadworm-infected patients and experimental murine infections with focus on CD4(+) T cells co-expressing markers of Th2 and Th1 differentiation. We show that mice infected with the close relative S. ratti generate strong Th2 responses characterized by the expansion of CD4(+) GATA-3(+) cells expressing IL-4/-5/-13 in blood, spleen, gut-draining lymph nodes, lung and gut tissue...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28655989/strongyloides-stercoralis-infection-an-exotic-cause-of-chronic-diarrhea
#6
Dimitrios S Politis, Eleni Triantafyllidi, Konstantinos H Katsanos, Dimitrios K Christodoulou
No abstract text is available yet for this article.
2017: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
https://www.readbyqxmd.com/read/28651833/severe-intestinal-obstruction-due-to-strongyloides-stercoralis-in-a-pregnant-woman
#7
A Malézieux-Picard, M C Saint-Paul, J Dellamonica, J Courjon, N Tieulié, P Marty, J G Fuzibet, R Collomp, J A Marinho, V Queyrel
No abstract text is available yet for this article.
June 23, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28641722/novel-findings-in-hiv-immune-reconstitution-disease-and-strongyloides-stercoralis-infection
#8
REVIEW
Roberto G Aru, Benjamin M Chilcutt, Saira Butt, Richard D deShazo
We report the successful treatment of an HIV-infected patient with progressive strongyloidiasis as a component of immune reconstitution disease and a review of the literature on this topic. In our experience, pre- and post-antiretroviral therapy intestinal biopsies support a novel mechanism of immune reconstitution disease to Strongyloides stercoralis. We conclude that extended, dual antihelminthic therapy and temporary discontinuation of antiretroviral therapy may be effective in similar patients.
June 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28618740/screening-of-immunocompromised-patients-at-risk-of-strongyloidiasis-in-western-turkey-using-elisa-and-real-time-pcr
#9
Esra Erdem Kivrak, Esra Atalay Şahar, Hüseyin Can, Mert Döşkaya, Mümtaz Yilmaz, Hüsnü Pullukçu, Ayşe Caner, Hüseyin Töz, Adnan Yüksel Gürüz, Meltem Işikgöz Taşbakan
BACKGROUND/AIM: Strongyloides stercoralis causes life-threatening hyperinfection or disseminated strongyloidiasis in immunocompromised patients such as HIV-positive, organ transplantation, and cancer patients. This study investigated the presence of strongyloidiasis in immunocompromised patients for the first time in Turkey. MATERIALS AND METHODS: Serum and stool samples were collected from 108 patients (25.9% of them were chronic renal failure and 74.1% were renal transplantation patients) who were admitted to Ege University Medical School in İzmir, located in western Turkey...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28614685/strongyloides-stercoralis-hyperinfection
#10
Heidi H McDonald, Milton Moore
A 47-year-old man who had lived in Laos and was taking prednisone for dermatomyositis presented with a 4-day history of abdominal pain, fever, melena, and hemoptysis and a 2-week history of rash. One month before presentation, he had been hospitalized and treated with high-dose glucocorticoids for..
June 15, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28599633/prevalence-of-intestinal-parasitic-infection-and-associated-risk-factors-among-village-health-volunteers-in-rural-communities-of-southern-thailand
#11
Chuchard Punsawad, Nonthapan Phasuk, Suchirat Bunratsami, Kanjana Thongtup, Niramon Siripakonuaong, Somchok Nongnaul
BACKGROUND: Intestinal parasitic infections remain prevalent and constitute a public health problem in certain rural areas of Thailand. Village health volunteers (VHVs), who are members of a Thai healthcare alliance, function as key providers of health prevention measures, disease control, and health education and share national health promotion campaigns with community members. This study is aimed at evaluating the prevalence, intensity, and risk factors for intestinal parasitic infection in VHVs in order to design community awareness and health education campaigns for the target population...
June 9, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28598404/validation-of-dess-as-a-dna-preservation-method-for-the-detection-of-strongyloides-spp-in-canine-feces
#12
Meruyert Beknazarova, Shelby Millsteed, Gemma Robertson, Harriet Whiley, Kirstin Ross
Strongyloides stercoralis is a gastrointestinal parasitic nematode with a life cycle that includes free-living and parasitic forms. For both clinical (diagnostic) and environmental evaluation, it is important that we can detect Strongyloides spp. in both human and non-human fecal samples. Real-time PCR is the most feasible method for detecting the parasite in both clinical and environmental samples that have been preserved. However, one of the biggest challenges with PCR detection is DNA degradation during the postage time from rural and remote areas to the laboratory...
June 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28584464/strongyloides-stercoralis-infection-a-case-series-from-a-tertiary-care-center-in-india
#13
Nitin Gupta, Aashish Choudhary, Bijay Ranjan Mirdha, Pratibha Kale, Kamla Kant, Arnab Ghosh, Nishant Verma
No abstract text is available yet for this article.
April 2017: Journal of Global Infectious Diseases
https://www.readbyqxmd.com/read/28577882/heritable-genetic-transformation-of-strongyloides-stercoralis-by-microinjection-of-plasmid-dna-constructs-into-the-male-germline
#14
Hongguang Shao, Xinshe Li, James B Lok
Heretofore, transgenesis in the parasitic nematode genus Strongyloides has relied on microinjecting transgene constructs into gonadal syncytia of free-living females. We now report transgenesis in Strongyloides stercoralis by microinjecting constructs into the syncytial testes of free-living males. Crosses of individual males microinjected with a construct encoding GFP with cohorts of 12 non-injected females produced a mean of 7.28±2.09 transgenic progeny. Progeny of males and females microinjected with distinct reporter constructs comprised 2...
June 1, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28572226/a-clinical-enigma-of-ongoing-constrictive-pericarditis
#15
Deacon Zhao Jun Lee, Reshma Amin, John Baksi, Robert Gerber
A 59-year-old lady presented with a 1-week history of orthopnoea, paroxysmal nocturnal dyspnoea, night sweats and a productive cough. She had no recent history of travel. Transthoracic echocardiogram revealed preserved left ventricular systolic function with abnormal pericardial thickening and restrictive left ventricular filling consistent with pericardial constriction. Cardiac magnetic resonance imaging confirmed a globally thickened pericardium and showed evidence of pericardial inflammation and constrictive physiology...
June 2017: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/28562417/strongyloides-stercoralis-in-solid-organ-transplantation-early-diagnosis-gets-the-worm
#16
Constance M Mobley, Atiya Dhala, Rafik Mark Ghobrial
PURPOSE OF REVIEW: Strongyloidiasis is a parasitic infection affecting millions of people worldwide. Complications of infection are strongly associated with alcoholism, immunosuppression, and organ transplantation. Delayed diagnosis results in hyperinfection syndrome and disseminated strongyloidiasis leading to mortality rates approaching 80%. Early detection, and prevention of infection and transmission are key to diminish this illness. RECENT FINDINGS: In this review, we cover the basic concepts in immunity, immunosuppression, and disorder necessary for understanding the infectious syndromes associated with Strongyloides stercoralis infection...
August 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28555169/strongyloides-colitis-as-a-harmful-mimicker-of-inflammatory-bowel-disease
#17
Julio Poveda, Farah El-Sharkawy, Leopoldo R Arosemena, Monica T Garcia-Buitrago, Claudia P Rojas
Autoinfection caused by Strongyloides stercoralis frequently becomes a life-long disease unless it is effectively treated. There is overlapping histomorphology between Strongyloides colitis and inflammatory bowel disease; a low index of suspicion can lead to misdiagnosis and fatal consequences. We present a case of Strongyloides colitis mimicking the clinical and pathologic features of inflammatory bowel disease. A 64-year-old female presented to the emergency department with a four-day history of abdominal pain, diarrhea, and hematochezia...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/28542260/hookworm-infection-is-associated-with-decreased-cd4-t-cell-counts-in-hiv-infected-adult-ugandans
#18
Bozena M Morawski, Miya Yunus, Emmanuel Kerukadho, Grace Turyasingura, Logose Barbra, Andrew Mijumbi Ojok, Andrew R DiNardo, Stefanie Sowinski, David R Boulware, Rojelio Mejia
Most studies evaluating epidemiologic relationships between helminths and HIV have been conducted in the pre-ART era, and evidence of the impact of helminth infections on HIV disease progression remains conflicting. Less is known about helminth infection and clinical outcomes in HIV-infected adults receiving antiretroviral therapy (ART). We sampled HIV-infected adults for eight gastrointestinal parasites and correlated parasitic infection with demographic predictors, and clinical and immunologic outcomes. Contrasting with previous studies, we measured parasitic infection with a quantitative, highly sensitive and specific polymerase chain reaction (PCR) method...
May 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28506307/intestinal-parasitic-infections-and-its-association-with-undernutrition-and-cd4-t-cell-levels-among-hiv-aids-patients-on-haart-in-butajira-ethiopia
#19
Dereje Gedle, Gemechu Kumera, Tewodros Eshete, Kasahun Ketema, Haweni Adugna, Fetuma Feyera
BACKGROUND: Intestinal parasitic infections and HIV/AIDS have been the major public health problems and remain a vital cause of morbidity and mortality in developing countries. Both problems are linked in a vicious cycle. The magnitude of intestinal parasites was prevalent among people living with HIV/AIDS even in the HAART era. However, the pertinent risk factors associated with intestinal parasites among HIV/AIDS patients were not well investigated in Ethiopia particularly at Butajira town...
May 15, 2017: Journal of Health, Population, and Nutrition
https://www.readbyqxmd.com/read/28500375/first-molecular-identification-and-genetic-diversity-of-strongyloides-stercoralis-and-strongyloides-fuelleborni-in-human-communities-having-contact-with-long-tailed-macaques-in-thailand
#20
Tongjit Thanchomnang, Pewpan M Intapan, Oranuch Sanpool, Rutchanee Rodpai, Somjintana Tourtip, Sujitra Yahom, Jitsuda Kullawat, Prayong Radomyos, Chalida Thammasiri, Wanchai Maleewong
The parasitic nematodes, Strongyloides stercoralis and Strongyloides fuelleborni, can infect humans and non-human primates. We amplified and sequenced a portion of the 18S ribosomal RNA gene (rRNA) and of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene of Strongyloides from humans in the study area in Thailand, where people have frequent contact with long-tailed macaques. Fresh stool samples were obtained from 213 people and were examined using the agar plate culture method. The overall prevalence of Strongyloides infection was 8...
July 2017: Parasitology Research
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