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https://www.readbyqxmd.com/read/28823007/excretory-secretory-products-from-two-fasciola-hepatica-isolates-induce-different-transcriptional-changes-and-il-10-release-in-lps-activated-bovine-boma-macrophages
#1
Piotr Bąska, Luke James Norbury, Anna Zawistowska-Deniziak, Marcin Wiśniewski, Kamil Januszkiewicz
Fasciola hepatica are trematodes that reside in the bile ducts of mammals. Infection causes US$3 billion in losses annually in animal production and is considered a zoonosis of growing importance. An under-represented area in F. hepatica research has been the examination of the different immunomodulatory abilities of various parasite isolates on the host immune system. In this paper, this issue was explored, with the bovine macrophage cell line "BOMA". The cells were matured by LPS treatment and stimulated with excretory/secretory antigens (ES) from two Fasciola hepatica isolates: a laboratory isolate "Weybridge" (Fh-WeyES) and a wild isolate (Fh-WildES)...
August 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28820707/prevalence-of-strongyloides-stercoralis-and-other-intestinal-parasite-infections-in-school-children-in-a-rural-area-of-angola-a-cross-sectional-study
#2
María Luisa Ruíz de Alegría Aznar, Karen Colmenares, Mateu Espasa, Arancha Amor, Isabel Lopez, Arlette Ninda, Joaquina Kanjala, Domingas Guilherme, Elena Sulleiro, Begoña Barriga, Eva Gil, Fernando Salvador, Cristina Bocanegra, Teresa López, Milagros Moreno, Israel Molina
Strongyloides stercoralis is widely distributed in the tropics and subtropics. The aim of this study was to determine the prevalence of S. stercoralis and other intestinal parasites and identify the risk factors for infection with S. stercoralis in a rural area of Angola. A cross-sectional study was conducted in school-age children (SAC) in Cubal, Angola. A questionnaire collecting clinical and epidemiological variables was used, and two stool samples were collected. A concentration technique (Ritchie) and a technique for detection of larvae migration (Baermann) were performed...
July 31, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28815724/secreted-products-of-fasciola-hepatica-inhibit-the-induction-of-t-cell-responses-that-mediate-allergy
#3
Conor M Finlay, Anna M Stefanska, Michelle M Coleman, Hanne Jahns, Joseph P Cassidy, Rachel M McLoughlin, Kingston H G Mills
There is evidence from epidemiology studies of a negative association between infection with helminth parasites and the development of allergy and asthma. Here we demonstrate that the excretory/secretory products of the helminth Fasciola hepatica (FHES) protected mice against ovalbumin (OVA)-induced allergic asthma when administered at time of allergen sensitisation. FHES reduced the accumulation of mucus, eosinophils and lymphocytes into the airways of allergen-challenged mice. Furthermore, FHES treatment suppressed Th2 responses in the airways...
August 16, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28807278/helminth-infections-on-organic-dairy-farms-in-spain
#4
I Orjales, M Mezo, M Miranda, M González-Warleta, F Rey-Crespo, M Vaarst, S Thamsborg, F J Diéguez, J A Castro-Hermida, M López-Alonso
The aim of this study was to assess the prevalence of the major helminth infections affecting organic dairy cattle in northern Spain. Milk and faecal samples were obtained from 443 milking cows. Ostertagia ostertargi and Fasciola hepatica exposure was assessed by detection of specific antibodies in milk samples and F. hepatica infection was diagnosed by the detection of coproantigens in faecal samples. Dictyocaulus viviparus and Calicophoron daubneyi infections were diagnosed by conventional coprological techniques...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28805164/modelling-the-spatial-distribution-of-fasciola-hepatica-in-bovines-using-decision-tree-logistic-regression-and-gis-query-approaches-for-brazil
#5
S C Bennema, M B Molento, R G Scholte, O S Carvalho, I Pritsch
Fascioliasis is a condition caused by the trematode Fasciola hepatica. In this paper, the spatial distribution of F. hepatica in bovines in Brazil was modelled using a decision tree approach and a logistic regression, combined with a geographic information system (GIS) query. In the decision tree and the logistic model, isothermality had the strongest influence on disease prevalence. Also, the 50-year average precipitation in the warmest quarter of the year was included as a risk factor, having a negative influence on the parasite prevalence...
August 14, 2017: Parasitology
https://www.readbyqxmd.com/read/28798750/heme-oxygenase-1-expression-contributes-to-the-immunoregulation-induced-by-fasciola-hepatica-and-promotes-infection
#6
Paula Carasi, Ernesto Rodríguez, Valeria da Costa, Sofía Frigerio, Natalie Brossard, Verónica Noya, Carlos Robello, Ignacio Anegón, Teresa Freire
Fasciola hepatica, also known as the liver fluke, is a trematode that infects livestock and humans causing fasciolosis, a zoonotic disease of increasing importance due to its worldwide distribution and high economic losses. This parasite immunoregulates the host immune system by inducing a strong Th2 and regulatory T immune response by immunomodulating dendritic cell (DC) maturation and alternative activation of macrophages. In this paper, we show that F. hepatica infection in mice induces the upregulation of heme-oxygenase-1 (HO-1), the rate-limiting enzyme in the catabolism of free heme that regulates the host inflammatory response...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28795109/edible-wild-mushrooms-of-the-western-ghats-data-on-the-ethnic-knowledge
#7
Namera C Karun, Kandikere R Sridhar
The edible wild mushrooms are most important in food security of ethnic groups and tribals throughout the world. Various indigenous strategies are followed to trace wild mushrooms suitable for human consumption. Data presented in this article projects ethnic knowledge on 51 edible wild mushrooms (in 23 genera) in the Western Ghats region of India. Information collected with support of ethnic groups/tribals pertains to habitats, substrates, mutualistic association, extent of availability, extent of edibility and method of processing of wild mushrooms...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28767916/transection-of-the-hepatic-parenchyma-associated-or-not-with-the-contralateral-portal-vein-branch-ligature-and-its-effect-in-liver-regeneration
#8
Henrique de Aguiar Wiederkehr, Julio Cesar Wiederkehr, Luiz Martins Collaço, Eros Luiz de Sousa, Paolo Salvalaggio, Caroline Aragão de Carvalho, Barbara de Aguiar Wiederkehr, Camila Aparecida Moraes Marques, Francielle França da Rosa, Felipe de Negreiros Nanni, Taíse Fuchs
Objective: To analyze the influence of portal vein ligation in hepatic regeneration by immunohistochemical criteria. Methods: Ten pigs divided into two groups of five animals underwent hepatectomy in two stages, and the groups were differentiated by ligation or not of the left portal vein tributary, which is responsible for vascularization of the left lateral and medial lobes of the pig liver. Five days after the procedure, the animals underwent liver biopsies for further analysis of histological and immunohistochemical with marker Ki67...
April 2017: Einstein
https://www.readbyqxmd.com/read/28764235/immunodiagnosis-of-human-fascioliasis-an-update-of-concepts-and-performances-of-the-serological-assays
#9
REVIEW
Bahador Sarkari, Samaneh Abdolahi Khabisi
Human Fascioliasis (HF) is a foodborne neglected parasitic disease caused by Fasciola hepatica and Fasciola gigantica. New epidemiological data suggest that the endemic areas of the disease are expanding and HF is being reported from areas where it was previously not observed. Diagnosis of HF is challenging. Performances of parasitological approaches, based on the detection of parasite's egg in the stool, are not satisfactory. Currently serological methods for the diagnosis of HF are mainly based on detection of anti-Fasciola antibodies in serum...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28761485/molecular-determination-of-fasciola-spp-isolates-from-domestic-ruminants-fecal-samples-in-the-northwest-of-iran
#10
Abbas Imani Baran, Habib Cheraghi Saray, Farzad Katiraee
BACKGROUND: Fasciola species are the main causes for fascioliasis with great financial losses and are among the most important food/water-borne parasites worldwide. The basic proceedings such as epidemiology and effective control of fascioliasis rely mainly on precise identification of Fasciola species. The present study was conducted to determine the Fasciola species in ruminant fecal samples from East Azerbaijan Province in Iran. METHODS: Overall, 2012 fecal samples were collected and processed initially for microscopic examination of Fasciola eggs in 2014-15...
April 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28761475/the-helminths-causing-surgical-or-endoscopic-abdominal-intervention-a-review-article
#11
REVIEW
Erdal Uysal, Mehmet Dokur
BACKGROUND: Helminths sometimes require surgical or endoscopic intervention. Helminths may cause acute abdomen, mechanical intestinal obstruction, gastrointestinal hemorrhage, perforation, hepatitis, pancreatitis, and appendicitis. This study aimed to determine the surgical diseases that helminths cause and to gather, analyze the case reports, case series and original articles about this topic in literature. METHODS: This study was designed as a retrospective observational study...
April 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28761457/in-vitro-assay-of-paecilomyces-lilacinus-biocontrol-effects-on-fasciola-hepatica-eggs-illustrated-in-scanning-electron-micrographs
#12
Faezeh Najafi, Sasan Rezaie, Eshrat Beigom Kia, Mahmoud Mahmoudi, Sadegh Khodavaisy, Mehdi Mohebali, Mohammad Javad Gharagozlou, Mohammad Bagher Rokni, Gholamreza Mowlavi
BACKGROUND: Fascioliasis is a zoonotic disease caused by the liver fluke Fasciola hepatica. Drug resistance, high costs of treatment and economic losses in meat production have emerged the need of alternative control measures into consideration. The aim of this study was to evaluate the in vitro ovicidal activity of Paecilomyces lilacinus fungus on F. hepatica eggs. METHODS: P. lilacinus isolated from the soil of natural environment was challenged on F. hepatica eggs to observe the bio control effect of nematophagous fungi on trematode helminth eggs...
January 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28734749/understanding-the-main-route-of-drug-entry-in-adult-fasciola-hepatica-further-insights-into-closantel-pharmacological-activity
#13
L Ceballos, C Canton, G Cadenazzi, K Larsen, G Virkel, L Moreno, I Fairweather, C Lanusse, L Alvarez
Closantel (CLS) is highly effective against adult liver flukes after its oral or subcutaneous (sc) administration in ruminants. Trans-tegumental diffusion and oral ingestion are the two potential routes available for the entry of drugs into Fasciola hepatica. The work reported here contributes to improve the understanding of CLS pharmacology. The main goals of were: I) to determine the pattern of in vivo CLS accumulation into adult F. hepatica and relevant tissues in CLS-treated sheep; II) to investigate the influence of the physicochemical composition of the incubation medium on the CLS diffusion process into adult F...
July 19, 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28725301/review-of-infectious-etiology-of-acute-pancreatitis
#14
REVIEW
Prashanth Rawla, Sathyajit S Bandaru, Anantha R Vellipuram
While gallstones and alcoholism are widely known to be the most common causative agents of acute pancreatitis, about 10% of cases are thought to be caused by infectious microorganisms. These microorganisms include viruses (e.g. mumps, Coxsackie B, and hepatitis), bacteria (e.g. Mycoplasma pneumoniae and leptospirosis), and parasites (e.g. Ascaris lumbricoides, Fasciola hepatica, and hydatid disease). Each organism causes acute pancreatitis through diverse mechanisms. The review is primarily conducted in an attempt to provide a better understanding of the possibility of acute pancreatitis presenting as a complication relating to these organisms, and the aim is to guide future diagnoses, management, and predictions of complications...
June 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28719964/discovery-of-parasite-eggs-in-archeological-residence-during-the-15th-century-in-seoul-korea
#15
Pyo Yeon Cho, Jung-Min Park, Myeong-Ki Hwang, Seo Hye Park, Yun-Kyu Park, Bo-Young Jeon, Tong-Soo Kim, Hyeong-Woo Lee
During civil engineering construction near Sejong-ro, Jongro-ku, Seoul, cultural sites were found that are thought to have been built in the 15th century. This area was home to many different people as well as the leaders of the Yi dynasty. To gain further insight into the life styles of the inhabitants of the old capital, soil samples were collected from various areas such as toilets, water foundations, and drainage ways. Parasite eggs were examined by microscopy after 5 g soil samples were rehydrated in 0...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28716204/a-protocol-to-identify-and-minimise-selection-and-information-bias-in-abattoir-surveys-estimating-prevalence-using-fasciola-hepatica-as-an-example
#16
Rebecca I Carroll, Andrew Forbes, David A Graham, Locksley L McV Messam
Abattoir surveys and findings from post-mortem meat inspection are commonly used to estimate infection or disease prevalence in farm animal populations. However, the function of an abattoir is to slaughter animals for human consumption, and the collection of information on animal health for research purposes is a secondary objective. This can result in methodological shortcomings leading to biased prevalence estimates. Selection bias can occur when the study population as obtained from the abattoir is not an accurate representation of the target population...
September 1, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28710478/recombinant-fasciola-hepatica-fatty-acid-binding-protein-suppresses-toll-like-receptor-stimulation-in-response-to-multiple-bacterial-ligands
#17
Marcos J Ramos-Benítez, Caleb Ruiz-Jiménez, Vasti Aguayo, Ana M Espino
Recently, we reported that a native Fasciola hepatica fatty acid binding protein (FABP) termed Fh12 is a powerful anti-inflammatory protein capable of suppressing the LPS-induced expression of inflammatory markers in vivo and in vitro. Because the purification of a protein in native form is, in many situations not cost-beneficial and unsuitable for industrial grade scale-up, this study accomplished the task of optimizing the expression and purification of a recombinant form of FABP (Fh15). Additionally, we ascertained whether this molecule could exhibit a similar suppressive effect on TLR-stimulation and inflammatory cytokine expression from macrophages than those previously demonstrated for the native molecule...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697819/functional-characterization-of-single-domain-cystatin-like-cysteine-proteinase-inhibitors-expressed-by-the-trematode-fasciola-hepatica
#18
Martín Cancela, Ileana Corvo, Edileuza DA Silva, Aline Teichmann, Leda Roche, Alvaro Díaz, José Fransisco Tort, Henrique B Ferreira, Arnaldo Zaha
Cystatins are small, phylogenetically conserved proteins that are tight-binding inhibitors of cysteine proteinases. The liver fluke Fasciola hepatica uses a diverse set of cysteine proteinases of the papain superfamily for host invasion, immune evasion and nutrition, but little is known about the regulation of these enzymes. The aim of this work is to characterize the cystatin repertoire of F. hepatica. For this purpose, we first surveyed the available sequence databases, identifying three different F. hepatica single-domain cystatins...
July 12, 2017: Parasitology
https://www.readbyqxmd.com/read/28691652/migration-of-fasciola-hepatica-newly-excysted-juveniles-is-inhibited-by-high-mannose-and-oligomannose-type-n-glycan-binding-lectins
#19
Andres Garcia-Campos, Alan W Baird, Grace Mulcahy
Fasciola hepatica has both zoonotic importance and high economic impact in livestock worldwide. After ingestion by the definitive host, the Newly Excysted Juveniles (NEJ) penetrate the intestine before reaching the peritoneal cavity. The role of some NEJ-derived proteins in invasion has been documented, but the role of NEJ glycans or lectin-binding receptors during initial infection in the gut is still unknown. To address these questions, the migration of NEJ through rat intestine was recorded at 30 min intervals up to 150 min by two ex vivo methods...
July 10, 2017: Parasitology
https://www.readbyqxmd.com/read/28678893/validity-of-a-commercial-kit-for-detection-of-antibodies-in-bovine-serum-in-an-endemic-area-for-fasciolosis
#20
Aline Nunes Simões, Sayanne Luns Hatum de Almeida, Áquila Flávia da Rocha Braga, Isabella Vilhena Freire Martins, Dirlei Molinari Donatele, Graziela Barioni
Fasciolosis is caused by Fasciola hepatica that affects the bile ducts and liver parenchyma of ruminants, which can result in economic loss. This study aimed to carry out the validity of the commercial kit ELISA® indirect front of the simple fecal sedimentation test used as the standard. 143 samples were collected blood and feces of cattle from Jerome, south of the Espírito Santo. Serum samples were left at -80 °C and used to perform the ELISA kit IDEXX®. All animals to stool examinations were also positive to the ELISA (22) and negative samples to test stool (121), 52 animals reacted positively against the antibody research...
June 29, 2017: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
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