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https://www.readbyqxmd.com/read/29041010/a-comparative-study-of-four-methods-for-the-detection-of-nematode-eggs-and-large-protozoan-cysts-in-mandrill-faecal-material
#1
Hanae Pouillevet, Serge-Ely Dibakou, Barthélémy Ngoubangoye, Clémence Poirotte, Marie J E Charpentier
Coproscopical methods like sedimentation and flotation techniques are widely used in the field for studying simian gastrointestinal parasites. Four parasites of known zoonotic potential were studied in a free-ranging, non-provisioned population of mandrills (Mandrillus sphinx): 2 nematodes (Necatoramericanus/Oesophagostomum sp. complex and Strongyloides sp.) and 2 protozoan species (Balantidium coli and Entamoeba coli). Different coproscopical techniques are available but they are rarely compared to evaluate their efficiency to retrieve parasites...
October 18, 2017: Folia Primatologica; International Journal of Primatology
https://www.readbyqxmd.com/read/29039287/strongyloides-stercoralis-seroprevalence-in-vietnam
#2
Nguyen Thi Ngoc Diep, Pham Quang Thai, Nghiem Nguyen Minh Trang, Julia Jäger, Annette Fox, Peter Horby, Hoang Vu Mai Phuong, Dang Duc Anh, LE Thi Quynh Mai, H Rogier VAN Doorn, Behzad Nadjm
Strongyloidiasis is a neglected tropical disease caused by the roundworm Strongyloides stercoralis affecting 30-100 million people worldwide. Many Southeast-Asian countries report a high prevalence of S. stercoralis infection, but there are little data from Vietnam. Here, we evaluated the seroprevalence of S. stercoralis related to geography, sex and age in Vietnam through serological testing of anonymized sera. Sera (n = 1710, 1340 adults and 270 children) from an anonymized age-stratified serum bank from four regions in Vietnam between 2012 and 2013 were tested using a commercial Strongyloides ratti immunoglobulin G ELISA...
October 17, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/29027596/10-year-parasitological-examination-results-2003-to-2012-of-faecal-samples-from-horses-ruminants-pigs-dogs-cats-rabbits-and-hedgehogs
#3
Katharina Raue, Lea Heuer, Claudia Böhm, Sonja Wolken, Christian Epe, Christina Strube
The results of coproscopical examinations in domestic animals and hedgehogs carried out as routine diagnostics in the years 2003 to 2012 at the Institute for Parasitology, University of Veterinary Medicine Hannover, Germany, are presented. Of 3475 horse faecal samples, 30.1% contained stages of strongyles and 1.3% eggs of Strongyloides westeri and Parascaris equorum, respectively. The most frequently observed parasite stages in 1416 cattle faecal samples were Eimeria oocysts (21.3%) and strongyle eggs or larvae (15...
October 13, 2017: Parasitology Research
https://www.readbyqxmd.com/read/29026374/geophagy-as-risk-behaviour-for-gastrointestinal-nematode-infections-among-pregnant-women-attending-antenatal-clinics-in-a-humid-tropical-zone-of-nigeria
#4
Njoku Ivoke, Nnenna Ikpor, Obinna Ivoke, Felicia Ekeh, Ngozi Ezenwaji, Gregory Odo, Florence Iyaji, Uwakwe Onoja, Joseph Eyo
BACKGROUND: Geophagy is wide spread among pregnant women in Ebonyi State, Nigeria. OBJECTIVE: The aim of this study was to assess intestinal nematode infections among geophagous pregnant women in Southern Ebonyi State, Nigeria. METHODS: Pregnant women were aged 17-45 years at gestational ages of ≥ 14 to 24 weeks on hospital enrolment were sampled. Data on geophagy was collected using structured questionnaire. Gastrointestinal nematode status of the participants was determined by stool analyses...
March 2017: African Health Sciences
https://www.readbyqxmd.com/read/29016680/targeted-mutagenesis-in-a-human-parasitic-nematode
#5
Spencer S Gang, Michelle L Castelletto, Astra S Bryant, Emily Yang, Nicholas Mancuso, Jacqueline B Lopez, Matteo Pellegrini, Elissa A Hallem
Parasitic nematodes infect over 1 billion people worldwide and cause some of the most common neglected tropical diseases. Despite their prevalence, our understanding of the biology of parasitic nematodes has been limited by the lack of tools for genetic intervention. In particular, it has not yet been possible to generate targeted gene disruptions and mutant phenotypes in any parasitic nematode. Here, we report the development of a method for introducing CRISPR-Cas9-mediated gene disruptions in the human-parasitic threadworm Strongyloides stercoralis...
October 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/29016326/human-intestinal-parasite-burden-and-poor-sanitation-in-rural-alabama
#6
Megan L McKenna, Shannon McAtee, Patricia E Bryan, Rebecca Jeun, Tabitha Ward, Jacob Kraus, Maria E Bottazzi, Peter J Hotez, Catherine C Flowers, Rojelio Mejia
Hookworm infection affects 430 million people worldwide, causing iron deficiency, impaired cognitive development, and stunting in children. Because of the environmental conditions needed for the hookworm life-cycle, this parasite is endemic to resource-limited countries. Necator americanus was endemic in the southern United States before improvement of sewage disposal systems and eradication programs. With continued poverty, poor sanitation, and an environment suitable for the hookworm life-cycle in some regions of the southern United States, a current prevalence study using modern molecular diagnostics is warranted...
September 5, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28991899/albendazole-and-ivermectin-for-the-control-of-soil-transmitted-helminths-in-an-area-with-high-prevalence-of-strongyloides-stercoralis-and-hookworm-in-northwestern-argentina-a-community-based-pragmatic-study
#7
Adriana Echazú, Marisa Juarez, Paola A Vargas, Silvana P Cajal, Ruben O Cimino, Viviana Heredia, Silvia Caropresi, Gladys Paredes, Luis M Arias, Marcelo Abril, Silvia Gold, Patrick Lammie, Alejandro J Krolewiecki
BACKGROUND: Recommendations for soil-transmitted helminth (STH) control give a key role to deworming of school and pre-school age children with albendazole or mebendazole; which might be insufficient to achieve adequate control, particularly against Strongyloides stercoralis. The impact of preventive chemotherapy (PC) against STH morbidity is still incompletely understood. The aim of this study was to assess the effectiveness of a community-based program with albendazole and ivermectin in a high transmission setting for S...
October 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28988405/a-case-of-adenocarcinoma-developed-in-the-small-intestine-with-chronic-strongyloidiasis
#8
Satoshi Ishikawa, Tamaki Maeda, Kimiaki Hattori, Takahiro Watanabe, Takanori Kuramoto, Saori Ueno, Goro Ueno, Tadahiro Yamada, Akifumi Kanazawa, Masahiro Sakaguchi, Yoshitane Tsukamoto
We experienced a case of intestinal strongyloidiasis complicated by jejunal carcinoma. A Japanese male in his 50s, who has a 7-year medical history of duodenal ulcers, complained of loss of appetite, nausea, vomiting and diarrhea. Computed tomography and gastroduodenal endoscopic examination revealed a stenosis of the duodenum. To remove the stenosis, gastric bypass surgery was performed. The pathological diagnosis of the resected jejunum was strongyloidiasis and well-differentiated adenocarcinoma with subserosal invasion and vascular infiltration...
October 7, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28970717/helminths-as-an-alternative-therapy-for-intestinal-diseases
#9
EDITORIAL
Aytan Miranda Sipahi, Daniel Machado Baptista
Animal models and clinical studies have shown that helminth infections exert immunomodulatory activity, altering intestinal permeability and providing a potential beneficial action on autoimmune and inflammatory disorders in human beings, such as inflammatory bowel disease (IBD) and celiac disease. This is consistent with the theory that intestinal microbiota is responsible for shaping human immunological responses. With the arrival of the immunobiologic era and the use of antibodies, we propose a distinctive pathway for treating patients with IBD and celiac disease...
September 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28969935/avidity-as-a-criterion-for-diagnosis-of-human-strongyloidiasis-increases-specificity-of-igg-elisa
#10
Larissa Rodrigues Bosqui, Henrique Tomaz Gonzaga, Maria do Rosário de Fátima Gonçalves-Pires, Fabiana Martins de Paula, Ricardo Sergio Almeida, Wander Rogério Pavanelli, Ivete Conchon-Costa, Julia Maria Costa-Cruz, Idessania Nazareth da Costa
This study evaluates the inclusion of the IgG avidity index in ELISA to detect anti-Strongyloides stercoralis IgG. The ELISA index revealed 70% of specificity. With the inclusion of screening AI, specificity increased to 80%. IgG avidity complemented traditional IgG ELISA by eliminating some of the suspected or false positive cases.
August 26, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/28969830/patent-gastrointestinal-nematode-infections-in-organically-and-conventionally-pastured-dairy-cows-and-their-impact-on-individual-milk-and-fertility-parameters
#11
Katharina May, Kerstin Brügemann, Sven König, Christina Strube
Infections with gastrointestinal nematodes (GIN) can lead to production losses and impacts on product quality in affected cows, which has mainly been demonstrated during deworming experiments or via herd-level measurements. Here, a field study was carried out to explore the association between GIN infection status and milk production as well as fertility parameters in individual dairy cows. Different selection lines of Black and White cows were included in the study, which were distributed among 17 small and medium-sized organic and conventional German grassland farms...
October 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28963064/regional-and-seasonal-effects-on-the-gastrointestinal-parasitism-of-captive-forest-musk-deer
#12
Xiao-Long Hu, Gang Liu, Yu-Ting Wei, Yi-Hua Wang, Tian-Xiang Zhang, Shuang Yang, De-Fu Hu, Shu-Qiang Liu
Parasite infections can cause adverse effects on health, survival and welfare of forest musk deer. However, few studies have quantified the parasite infection status and evaluated the parasite temporal dynamics and differences between breeding centers for captive forest musk deer. The purpose of this study was to assess seasonal and regional effects on the parasite prevalence, shedding capacity, diversity, aggregation and infracommunity to establish baseline data on captive forest musk deer. The McMaster technique was applied to count parasite eggs or oocysts in 990 fecal samples collected at three breeding centers located in Qinling Mountains and Tibetan Plateau during spring, summer, and winter...
September 28, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28951343/the-relationship-between-treatment-for-strongyloides-stercoralis-infection-and-type-2-diabetes-mellitus-in-an-australian-aboriginal-population-a-three-year-cohort-study
#13
Russell Hays, Paul Giacomin, Lennart Olma, Adrian Esterman, Robyn McDermott
AIM: To determine the effect of treatment for Strongyloides stercoralis infection on type 2 diabetes mellitus in an Australian Aboriginal population. METHODS: A three-year cohort study of 259 Aboriginal adults living in northern Australia. Subjects were tested for S. stercoralis infection, diabetic status and HbA1c at recruitment. 92 subjects were ELISA positive for S. stercoralis and 91 were treated with two doses of ivermectin 0.2mg/kg. Serological cure was assessed after 6months and those who remained positive were retreated...
September 23, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28942408/asymptomatic-pyogenic-liver-abscesses-secondary-to-fusobacterium-nucleatum-and-streptococcus-vestibularis-in-an-immunocompetent-patient
#14
Hamish Houston, Kartik Kumar, Salman Sajid
A 66-year-old male patient presented with symptoms and signs of L4/5 radiculopathy. He was found to be anaemic with elevated inflammatory markers and deranged hepatic enzymes. Imaging revealed lumbar canal stenosis and the presence of pyogenic liver abscesses from which Fusobacterium nucleatum and Streptococcus vestibularis were isolated. The hepatic abscesses were attributed to asymptomatic diverticular perforation. Multiple coexisting incidental infections were discovered, including oesophageal candidiasis, Helicobacter pylori, stool cultures positive for Strongyloides stercoralis, and sputum cultures positive for Enterobacter cloacae, Escherichia coli and Mycobacterium avium Extensive investigations for possible underlying immunosuppression were negative...
September 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28939495/seroprevalence-of-strongyloides-stercoralis-infection-among-htlv-i-infected-blood-donors-in-barcelona-spain-a-cross-sectional-study
#15
Fernando Salvador, Elena Sulleiro, Maria Piron, Adrián Sánchez-Montalvá, Silvia Sauleda, Israel Molina
Strongyloides stercoralis infection in patients with HTLV-I infection may lead to severe clinical manifestations. The aim of the present study is to determine the seroprevalence of S. stercoralis infection among blood donors who tested positive for HTLV-I infection. A cross-sectional study was performed at the Vall d'Hebron University Hospital (Barcelona, Spain) in 2016. Serum samples from HTLV-I positive patients diagnosed from 2008 to 2015 were retrieved from the Blood Bank, and S. stercoralis serology was performed...
December 2017: Acta Tropica
https://www.readbyqxmd.com/read/28929562/seroepidemiological-trend-of-strongyloidiasis-in-the-bolivian-chaco-1987-2013-in-the-absence-of-disease-specific-control-measures
#16
Michele Spinicci, Fabio Macchioni, Antonia Mantella, Simona Gabrielli, Mimmo Roselli, David Rojo Mayaregua, Joaquín Monasterio Pinckert, Herlan Gamboa Barahona, Grover Adolfo Paredes, Percy Halkyer, Gabriella Cancrini, Piero Olliaro, Antonio Montresor, Alessandro Bartoloni
OBJECTIVES: The prevalence of Strongyloides stercoralis infections is grossly underestimated because infections go mostly undetected, although they can persist for a lifetime due to the auto-infective cycle. In the Bolivian Chaco, the prevalence of soil-transmitted nematodes dropped dramatically in the past 25 years, but the mebendazole used for preventive chemotherapy has no effect on S. stercoralis. Meanwhile, the prevalence of intestinal protozoan infections remains unchanged. We compared S...
September 20, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28923008/an-eleven-year-retrospective-hospital-based-study-of-epidemiological-data-regarding-human-strongyloidiasis-in-northeast-thailand
#17
Thidarat K Prasongdee, Pokkamol Laoraksawong, Wanida Kanarkard, Ratthaphol Kraiklang, Kraisit Sathapornworachai, Sureeporn Naonongwai, Porntip Laummaunwai, Oranuch Sanpool, Pewpan M Intapan, Wanchai Maleewong
BACKGROUND: Human strongyloidiasis is a chronic and persistent gastrointestinal disease caused by infection with soil-transmitted helminths of the genus Strongyloides. The aim of this research was to obtain diagnostic prevalence regarding strongyloidiasis in northeast Thailand through a hospital-based study. METHODS: Patients' demographic data and the results of stool examinations conducted using the formalin ethyl acetate concentration technique were collected from the parasitology laboratory records at Srinagarind Hospital in Khon Kaen, Thailand...
September 18, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28905715/pilot-study-to-assess-the-efficacy-of-ivermectin-and-fenbendazole-for-treating-captive-born-olive-baboons-papio-anubis-coinfected-with-strongyloides-f%C3%A3-lleborni-and-trichuris-trichiura
#18
Mason V Reichard, Jennifer E Thomas, Maria Chavez-Suarez, Cassandra O Cullin, Gary L White, Emily C Wydysh, Roman F Wolf
In this study, we evaluated the efficacy of combined treatment with ivermectin and fenbendazole (IVM-FBZ) for treating captive olive baboons (Papio anubis) infected with Strongyloides fülleborni and Trichuris trichiura, 2 common nematode parasites of these NHP. Infected baboons were treated for a total of 9 wk with ivermectin (400 μg/kg IM twice weekly) and fenbendazole (50 mg/kg PO once daily for 3 d; 3 rounds of treatment, 21 d apart). Five baboons naturally infected with both S. fülleborni and T. trichiura (n = 4) or S...
January 1, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28904436/strongyloid-hyperinfection-in-a-patient-with-immunocompromised-chronic-kidney-disease
#19
S Hedau, V P Reddy, S D Mondhe, J V Devana
Strongyloid hyperinfection is seen in immunocompromised individuals with underlying lung disease. The use of immunosuppressive drugs is an important risk factor. We report a case of IgA nephropathy with crescent, started on glucocorticoid and mycophenolate mofetil. He presented with bilateral lung opacities with breathlessness. As the breathlessness was not improving, despite adequate ultrafiltration, bronchoscopy was done. Bronchoalveolar lavage fluid examination showed the presence of strongyloid larvae, which was later demonstrated in stool also...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28882756/opening-a-can-of-worms-leprosy-reactions-and-complicit-soil-transmitted-helminths
#20
Deanna A Hagge, Pawan Parajuli, Chhatra B Kunwar, Divya R S J B Rana, Ruby Thapa, Kapil D Neupane, Peter Nicholls, Linda B Adams, Annemieke Geluk, Mahesh Shah, Indra B Napit
BACKGROUND: >94% of new annual leprosy cases are diagnosed in populations co-endemic for soil-transmitted helminths (STH). STH can profoundly dysregulate host immune responses towards Th2 bias, which can be restored over time after deworming. We hypothesize that STH co-infection is associated with leprosy reaction (denoted as simply "reaction" herein) occurrence within a co-endemic population. METHODS: A cohort study was performed on a cohort of Nepalese leprosy patients across treatment and diagnostic classifications who were screened by routine fecal smear microscopy and multiplex quantitative PCR (qPCR) for Ascaris lumbricoides (Al), Strongyloides stercoralis (Ss), Ancyclostoma duodenale (Ad) and Necator americanus (Na)...
September 2017: EBioMedicine
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