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https://www.readbyqxmd.com/read/28445612/influence-of-adjuvant-formulation-on-inducing-immune-response-in-mice-immunized-with-a-recombinant-serpin-from-trichinella-spiralis
#1
Jing Xu, Xue Bai, Libo Wang, Hai Ning Shi, Joke W B van der Giessen, Pascal Boireau, Ming Yuan Liu, Xiao Lei Liu
Nematodes of the genus Trichinella are one of the most widespread zoonotic pathogens on the world and they can still cause major public health problems in many parts of the world. Vaccination against the helminth nematode Trichinella could be a good strategy to reduce the risk of human and animal infection. It was our aim to evaluate three adjuvants, which could be used as an efficient vaccine for animals in combination with rTs-Serpin antigen. In this study, BALB/c mice were vaccinated by an intramuscular route with rTs-Serpin antigen from the parasite Trichinella spiralis in combination with three different adjuvant formulations: Montanide ISA201, Montanide IMS 1313 N PR VG and Freund's complete adjuvant / Freund's incomplete adjuvant (FCA/FIA)...
April 26, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28440501/transfer-of-cd11c-lamina-propria-mononuclear-phagocytes-from-post-infectious-irritable-bowel-syndrome-causes-mucosal-barrier-dysfunction-and-visceral-hypersensitivity-in-recipient-mice
#2
Ya-Jun Ren, Lei Zhang, Tao Bai, Hong-Lu Yu, Ying Li, Wei Qian, Si Jin, Zhi-Fan Xiong, Huan Wang, Xiao-Hua Hou
The role of low-grade inflammation in the development of post‑infectious irritable bowel syndrome (PI‑IBS) has attracted increasing attention. Abnormal CD11c+ mononuclear phagocytes, such as dendritic cells (DCs), macrophages, and monocytes, are involved in the disruption of immune tolerance in organisms, which can lead to the development of chronic inflammatory diseases. The present study tested the hypothesis that CD11c+ lamina propria mononuclear phagocytes (CD11c+ LPMPs) contribute to increased mucosal permeability and visceral hypersensitivity in a PI‑IBS mouse model...
April 25, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28439686/first-case-of-trichinella-nativa-infection-in-wild-boar-in-central-europe-molecular-characterization-of-the-parasite
#3
Ewa Bilska-Zając, Mirosław Różycki, Ewa Chmurzyńska, Ewelina Antolak, Marek Próchniak, Katarzyna Grądziel-Krukowska, Jacek Karamon, Jacek Sroka, Jolanta Zdybel, Tomasz Cencek
The examination of wild boars gained in Poland shows for the first time occurrence of Trichinella nativa, freeze-resistant species of Trichinella in this host from the central Europe region. This finding is not only one of several cases of T. nativa invasion in wild boars all over the world but also one of the very few cases of T. nativa detected so far beyond the known boundary of occurrence of this species. The molecular characterization of discovered larvae based on analysis of partial genes: 5s rDNA-ISR and CO1 confirm the findings...
April 25, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28423884/integrating-market-chain-assessments-with-zoonoses-risk-analysis-in-two-cross-border-pig-value-chains-in-lao-pdr
#4
Anna Okello, Tassilo Tamino Tiemann, Phouth Inthavong, Boualam Khamlome, Ammaly Phengvilaysouk, Soukanh Keonouchanh, Chattouphone Keokhamphet, Virasack Somoulay, Kate Blaszak, Stuart Blacksell, Walter Okello, John Allen
Lao PDR's recent accession to the World Trade Organization necessitates a greater understanding of the patterns and risk of livestock production in order to better align national policy with the Agreement on the Application of Sanitary and Phytosanitary Measures. This eco-health study describes the integration of market chain and zoonoses risk analyses at two strategic cross border points between Lao PDR, Thailand and Viet Nam. Information gained from smallholder farmer/trader interviews was integrated with serological surveys for pig-associated zoonoses - including hepatitis E virus, Taenia solium and Trichinella - to identify potential linkages between disease risk and pig production and slaughter in low input systems common across the country...
March 25, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28406139/t-bet-independent-development-of-ifn%C3%AE-secreting-natural-t-helper-1-cell-population-in-the-absence-of-itk
#5
Arun K Kannan, Sonia Mohinta, Weishan Huang, Lu Huang, Nicholas Koylass, Judith A Appleton, Avery August
Th1, Th2, Th9 and Th17 cells are conventional CD4(+) effector T cells identified as secretors of prototypical cytokines IFNγ, IL4, IL9, and IL-17A respectively. Recently, populations of natural Th17 and Th1 cells (nTh17 and nTh1) with innate-like phenotype have been identified in the thymus that are distinct from conventional Th17 and Th1 cells. The absence of the Tec family kinase Interleukin-2 inducible T cell kinase (Itk) results in T cell immunodeficiency in mice and humans. Here we show that Itk negatively regulates the development of nTh1 cells that express IFNγ in a Tbet independent manner, and whose expansion can be enhanced by IL4...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28374797/innate-immunity-modulation-in-the-duodenal-mucosa-induced-by-rem-sleep-deprivation-during-infection-with-trichinella-spirallis
#6
Elizabeth G Ibarra-Coronado, Armando Pérez-Torres, Ana M Pantaleón-Martínez, Javier Velazquéz-Moctezuma, Veronica Rodriguez-Mata, Jorge Morales-Montor
Sleep is considered to be an important predictor of the immunity, since the absence of sleep can affect the development of the immune response, and consequently increase the susceptibility to contract an infection. The aim of the present study was to investigate if sleep deprivation and stress induce dysregulation of the duodenal mucous membrane during the acute infection with Trichinella spiralis. Our results shows that, in the intestinal mucous membrane, stress and sleep deprivation, produces different effect in the cells, and this effect depends on the studied duodenal compartment, glands or villi...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28372597/trichinella-and-polar-bears-a-limited-risk-for-humans
#7
J Dupouy-Camet, P Bourée, H Yera
In this review, we identified 63 cases reported since World War II of human trichinellosis linked to the consumption of parasitized polar bear (Ursus maritimus) meat. This low number contrasts to the numerous cases of human trichinellosis related to consumption of the meat of black (U. americanus) or brown bears (U. arctos). The prevalence of Trichinella infection is high in bears, but larval muscular burden is usually lower in polar bears compared to other bear species. Polar bears, therefore, seem to play a limited role in the transmission of trichinellosis to humans, as native residents living in the Arctic traditionally consume well-cooked bear meat, and travellers and foreign hunters have only limited access to this protected species due to the declining polar bear population...
April 4, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28359828/tspka-r-a-potential-immunodiagnostic-antigen-for-the-detection-of-porcine-cysticercosis
#8
Guangxue Liu, Panhong Liang, Shaohua Zhang, Aijiang Guo, Lijie Wang, Yadong Zheng, Xuenong Luo
Cysticercosis, caused by metacestodes of Taenia solium, has a significant soci-economic impact and is of considerable importance in public health. However, there are no specific diagnostic antigens to distinguish between T. solim and Taenia hydatigena. In the present study, cAMP-dependent protein kinase regulatory subunit (TsPKA-r), an excretory/secretary (ES) antigen of T. solium, was used to establish a specific and sensitive diagnostic tool for detection of porcine cysticercosis. The full-length sequence encoding TsPKA-r was amplified by PCR, sequenced and then identified by bioinformatics...
March 28, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28329274/trichinella-nativa-outbreak-with-rare-thrombotic-complications-associated-with-meat-from-a-black-bear-hunted-in-northern-ontario
#9
Daniel Dalcin, Dante S Zarlenga, Nicholas C Larter, Eric Hoberg, Daniel A Boucher, Samuel Merrifield, Rachel Lau, Filip Ralevski, Karamjit Cheema, Kevin L Schwartz, Andrea K Boggild
Background: Although trichinellosis is known to cause thrombotic disease, serious thrombotic events are rare and have not been previously associated with Trichinella nativa infection. Methods: Patient interviews and medical chart reviews were conducted on 10 men who became ill following consumption of a common source of black bear meat. Trichinella serology on patient sera as well as PCR and larval identification of the meat samples was conducted. Results: All 10 exposed individuals developed an acute illness clinically compatible with trichinellosis, characterized by fever, abdominal pain, and diarrhea, along with eosinophilia ranging from 0...
February 22, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28320455/a-systematic-review-of-taeniasis-cysticercosis-and-trichinellosis-in-vietnam
#10
REVIEW
Dinh Ng-Nguyen, Mark A Stevenson, Rebecca J Traub
Taeniasis, cysticercosis and trichinellosis have been ranked as the most important food-borne parasites of humans in terms of public health, socioeconomic and trade impact. Despite this, information on these food-borne zoonoses in Vietnam is scarce and fragmented, and many local reports remain inaccessible to the international research community. This study aims to conduct comprehensive literature searches to report on the incidence and estimate the true prevalence of taeniasis in humans and T. solium cysticercosis in humans and pigs in Vietnam utilizing Bayesian models; in addition, to report the incidence and the distribution of trichinellosis...
March 21, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28287594/magnetic-stirrer-method-for-the-detection-of-trichinella-larvae-in-muscle-samples
#11
Anne Mayer-Scholl, Edoardo Pozio, Jennifer Gayda, Nora Thaben, Peter Bahn, Karsten Nöckler
Trichinellosis is a debilitating disease in humans and is caused by the consumption of raw or undercooked meat of animals infected with the nematode larvae of the genus Trichinella. The most important sources of human infections worldwide are game meat and pork or pork products. In many countries, the prevention of human trichinellosis is based on the identification of infected animals by means of the artificial digestion of muscle samples from susceptible animal carcasses. There are several methods based on the digestion of meat but the magnetic stirrer method is considered the gold standard...
March 3, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28229221/the-raccoon-dog-nyctereutes-procyonoides-and-the-raccoon-procyon-lotor-their-role-and-impact-of-maintaining-and-transmitting-zoonotic-diseases-in-austria-central-europe
#12
Tanja Duscher, Adnan Hodžić, Walter Glawischnig, Georg G Duscher
The neozoan species raccoon dog (Nyctereutes procyonoides) and raccoon (Procyon lotor) are widespread in Europe and potential vectors of many diseases that can threaten human and domestic animal health. Facing a further spread of these species, it is important to know about (i) pathogens imported and/or (ii) pathogens acquired in the new habitat. Thus, we investigated the parasite fauna of wild raccoon dogs and raccoons from Austria, at the edge of their new distribution range. The eight examined raccoons were nearly free of pathogens including Baylisascaris procyonis, and thus assumed to have a low epidemiological impact, so far...
April 2017: Parasitology Research
https://www.readbyqxmd.com/read/28219418/new-insights-on-serodiagnosis-of-trichinellosis-during-window-period-early-diagnostic-antigens-from-trichinella-spiralis-intestinal-worms
#13
Zhong-Quan Wang, Ya-Li Shi, Rou-Dan Liu, Peng Jiang, Ya-Yi Guan, Ying-Dan Chen, Jing Cui
The clinical diagnosis of trichinellosis is difficult because its clinical manifestations are nonspecific. Detection of anti-Trichinella IgG by ELISA using T. spiralis muscle larval excretory-secretory (ES) antigens is the most commonly used serological method for diagnosis of trichinellosis, but the main disadvantage is false negativity during the early stage of infection. There is an obvious window period between Trichinella infection and antibody positivity.During the intestinal stage of Trichinella infection, the ES antigens of intestinal worms (intestinal infective larvae and adults) are exposed to host's immune system at the earliest time and elicit the production of specific anti-Trichinella antibodies...
February 20, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28213036/meat-sources-of-infection-for-outbreaks-of-human-trichinellosis
#14
REVIEW
Ali Rostami, H Ray Gamble, Jean Dupouy-Camet, Hooshang Khazan, Fabrizio Bruschi
Trichinellosis is one of the most important foodborne zoonotic diseases, with worldwide distribution. While human risk for trichinellosis has historically been linked to pork, modern pork production systems and slaughter inspection programs have reduced or eliminated pork as a source for trichinellosis in many countries. While pork may no longer pose a significant risk for trichinellosis, many other animal species may be hosts for Trichinella species nematodes and when human consume meat from these animal species, there may be risk for acquiring trichinellosis...
June 2017: Food Microbiology
https://www.readbyqxmd.com/read/28193842/experimental-arthritis-is-dependent-on-mouse-mast-cell-protease-5
#15
Richard L Stevens, H Patrick McNeil, Lislaine A Wensing, Kichul Shin, G William Wong, Philip M Hansbro, Steven A Krilis
The constitutive heparin(+) (HP) mast cells (MCs) in mice express mouse MC protease (mMCP)-5 and carboxypeptidase A (mMC-CPA). The amino acid sequence of mMCP-5 is most similar to that of human chymase-1, as are the nucleotide sequences of their genes and transcripts. Using a homologous recombination approach, a C57BL/6 mouse line was created that possessed a disrupted mMCP-5 gene. The resulting mice were fertile and had no obvious developmental abnormality. Lack of mMCP-5 protein did not alter the granulation of the IL-3/IL-9-dependent mMCP-2(+) MCs in the jejunal mucosa of Trichinella spiralis-infected mice...
March 31, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28130490/duplication-of-drosophila-melanogaster-mitochondrial-ef-tu-pre-adaptation-to-t-arm-truncation-and-exclusion-of-bulky-aminoacyl-residues
#16
Aya Sato, Takuma Suematsu, Koh-Ki Aihara, Kiyoshi Kita, Tsutomu Suzuki, Kimitsuna Watanabe, Takashi Ohtsuki, Yoh-Ichi Watanabe
Translation elongation factor Tu (EF-Tu) delivers aminoacyl-tRNA to ribosomes in protein synthesis. EF-Tu generally recognizes aminoacyl moieties and acceptor- and T-stems of aminoacyl-tRNAs. However, nematode mitochondrial (mt) tRNAs frequently lack all or part of the T-arm that is recognized by canonical EF-Tu. We previously reported that two distinct EF-Tu species, EF-Tu1 and EF-Tu2, respectively recognize mt tRNAs lacking T-arms and D-arms in the mitochondria of the chromadorean nematode Caenorhabditis elegans C...
January 27, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28128348/population-expansion-and-individual-age-affect-endoparasite-richness-and-diversity-in-a-recolonising-large-carnivore-population
#17
Ines Lesniak, Ilja Heckmann, Emanuel Heitlinger, Claudia A Szentiks, Carsten Nowak, Verena Harms, Anne Jarausch, Ilka Reinhardt, Gesa Kluth, Heribert Hofer, Oliver Krone
The recent recolonisation of the Central European lowland (CEL) by the grey wolf (Canis lupus) provides an excellent opportunity to study the effect of founder events on endoparasite diversity. Which role do prey and predator populations play in the re-establishment of endoparasite life cycles? Which intrinsic and extrinsic factors control individual endoparasite diversity in an expanding host population? In 53 individually known CEL wolves sampled in Germany, we revealed a community of four cestode, eight nematode, one trematode and 12 potential Sarcocystis species through molecular genetic techniques...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28127344/helminth-parasites-of-wild-boars-sus-scrofa-in-bushehr-province-southwestern-iran
#18
Majid Mansouri, Bahador Sarkari, Gholam Reza Mowlavi
BACKGROUND: Wild boars, Sus scrofa, of wide distribution considered as a potential source of zoonotic parasites. The current study aimed to assess the prevalence of helminth infections in wild boars in the Persian Gulf coastal area (Bushehr Province), Southwestern Iran. METHODS: Twenty-five wild boars, including 11 males and 14 females, were collected during a course of vertebrate pest control in the Bushehr Province, southwestern Iran in 2013. The specimen were immediately dissected and carefully searched for the parasites...
July 2016: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28106258/t-cell-clones-in-human-trichinellosis-evidence-for-a-mixed-th1-th2-response
#19
C Della Bella, M Benagiano, M De Gennaro, M A Gomez-Morales, A Ludovisi, S D'Elios, S Luchi, E Pozio, M M D'Elios, F Bruschi
In humans, studies on the cellular immune response against Trichinella are scarce. Aim of this study was to characterize the cytokine profile of T cells specific for Trichinella britovi in trichinellosis patients. PATIENTS AND METHODS: Peripheral blood mononuclear cells (PBMC) were obtained from five patients involved in a trichinellosis outbreak caused by Trichinella britovi, which occurred in 2013 in Tuscany (Italy). All the patients resulted positive for Trichinella-specific IgG, IgE and presented eosinophilia...
January 20, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28103386/paraoxonase-1-activity-is-related-to-trichinella-spiralis-induced-hepatitis-in-rats
#20
Ayman Samir Farid, Eman Mohamed Fath, Shogo Mido, Nariaki Nonaka, Yoichiro Horii
BACKGROUND: Little is known about the potential adverse effects of a chronic zoonotic nematode Trichinella spiralis infection on hepatic inflammation and its relationship to paraoxonase (PON)-1 and butyrylcholinesterase (BuChE) activities. Therefore, we aimed to examine the effects of T. spiralis infection on hepatic synthesis of PON1. METHODS: Wistar rats were infected with 2500 first-stage larvae (L1) of T. spiralis, and serum PON1 and BuChE activities were evaluated...
January 19, 2017: European Journal of Clinical Investigation
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