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https://www.readbyqxmd.com/read/28632832/-a-hundred-years-since-the-beginning-of-the-great-war-trichinosis-outbreak-in-dresden-marine-in-chile-chronicle-of-an-announced-infection
#1
Italo Fernández, Alejandro Mihovilovich
In commemoration of one hundred years of the beginning of World War I, the occurrence of an outbreak of trichinosis in the crew of the SMS Dresden, a German ship that participated in that world conflagration, is re-viewed. In September 1915, while the sailors of SMS Dresden were forcibly detained on Isla Quiriquina, Bío Bío Region, Chile, 60 individuals became ill. The cause of the outbreak was the consumption of sausages made from pork infected with the parasite Trichinella spiralis. There was a fatal case...
April 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/28631164/studies-on-vertical-transmission-of-trichinella-spiralis-in-experimentally-infected-guinea-pigs-cavia-porcellus
#2
Eliana Riva, Cesar Fiel, Gisele Bernat, Sebastián Muchiut, Pedro Steffan
An experimental study to enhance knowledge on the capability of Trichenella spiralis to pass from guinea pigs to progeny at different periods of pregnancy or lactation was performed. For this purpose, 18 female adult guinea pigs were inoculated with 100 or 1000 T. spiralis muscle larvae (ML) during early, late gestation and during lactation period. The presence of T. spiralis (ML) in mothers and newborns was studied through enzymatic digestion from muscle samples. ML were observed in 9 of 42 newborn guinea pigs and levels of infection were significantly higher when infections of mothers were done during late gestation (p = 0...
June 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28620388/trichinella-spiralis-calreticulin-binds-human-complement-c1q-as-an-immune-evasion-strategy
#3
Limei Zhao, Shuai Shao, Yi Chen, Ximeng Sun, Ran Sun, Jingjing Huang, Bin Zhan, Xinping Zhu
As a multicellular parasitic nematode, Trichinella spiralis regulates host immune responses by producing a variety of immunomodulatory molecules to escape from host immune attack, but the mechanisms underlying the immune evasion are not well understood. Here, we identified that T. spiralis calreticulin (Ts-CRT), a Ca(2+)-binding protein, facilitated T. spiralis immune evasion by interacting with the first component of human classical complement pathway, C1q. In the present study, Ts-CRT was found to be expressed on the surface of different developmental stages of T...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28620363/proteomic-analysis-of-trichinella-spiralis-adult-worm-excretory-secretory-proteins-recognized-by-sera-of-patients-with-early-trichinellosis
#4
Zhong Q Wang, Ruo D Liu, Ge G Sun, Yan Y Song, Peng Jiang, Xi Zhang, Jing Cui
The most commonly used serodiagnostic antigens for trichinellosis are the excretory-secretory (ES) antigens from T. spiralis muscle larvae (ML), but the specific antibodies against the ML ES antigens are usually negative during early stage of Trichinella infection. The recent studies demonstrated that T. spiralis adult worm (AW) antigens were recognized by mouse or swine infection sera on Western blot as early as 7-15 days post-infection (dpi), the AW antigens might contain the early diagnostic markers for trichinellosis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28616474/serological-tools-for-detection-of-trichinella-infection-in-animals-and-humans
#5
REVIEW
Yong Yang, Ya Nan Cai, Ming Wei Tong, Na Sun, Yin Hua Xuan, Yan Jun Kang, Isabelle Vallée, Pascal Boireau, Shi Peng Cheng, Ming Yuan Liu
Trichinellosis is a serious foodborne zoonotic disease. It is an important threat to public health in both developing and developed countries. Human infections are strongly associated with consuming undercooked meat containing infective Trichinella larvae. The development of serological tools has enabled seroepidemiological studies and contributed to our knowledge on the importance of this parasite. Serological tests can also help the diagnosis of parasite infections in humans and the surveillance of animals...
December 2016: One Health
https://www.readbyqxmd.com/read/28615865/epidemiological-studies-on-trichinellosis-in-pigs-sus-scofa-in-india
#6
Pranita Konwar, Balbir Bagicha Singh, Jatinder Paul Singh Gill
The present study was conducted to determine the prevalence of trichinellosis in domestic pigs (Sus scrofa) in India. A total of 319 tissue and 279 serum samples were collected from 279 slaughter pigs. The samples were collected from small slaughter shops located in Assam, Chandigarh (Union territory), Punjab and Uttarakhand states of the country. The presence of Trichinella spp. antibodies in serum was determined using a commercially available enzyme-linked immunosorbent assay (ELISA) kit and tissue samples were digested using the OIE recommended pepsin-HCl digestion method...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28583210/long-read-sequencing-improves-assembly-of-trichinella-genomes-10-fold-revealing-substantial-synteny-between-lineages-diverged-over-7-million-years
#7
Peter C Thompson, Dante S Zarlenga, Ming-Yuan Liu, Benjamin M Rosenthal
Genome assemblies can form the basis of comparative analyses fostering insight into the evolutionary genetics of a parasite's pathogenicity, host-pathogen interactions, environmental constraints and invasion biology; however, the length and complexity of many parasite genomes has hampered the development of well-resolved assemblies. In order to improve Trichinella genome assemblies, the genome of the sylvatic encapsulated species Trichinella murrelli was sequenced using third-generation, long-read technology and, using syntenic comparisons, scaffolded to a reference genome assembly of Trichinella spiralis, markedly improving both...
June 6, 2017: Parasitology
https://www.readbyqxmd.com/read/28580764/resiniferatoxin-modulates-the-th1-immune-response-and-protects-the-host-during-intestinal-nematode-infection
#8
J L Muñoz-Carrillo, J F Contreras-Cordero, J L Muñoz-López, C H Maldonado-Tapia, J J Muñoz-Escobedo, M A Moreno-García
In the early stage of the intestinal phase of Trichinella spiralis infection, the host triggers a Th1 type immune response with the aim of eliminating the parasite. However, this response damages the host which favors the survival of the parasite. In the search for novel pharmacological strategies that inhibit the Th1 immune response and assist the host against T. spiralis infection, a recent study showed that resiniferatoxin had anti-inflammatory activity contributed to the host in T. spiralis infection. In this study, we evaluated if RTX modulates the host immune response through the inhibition of Th1 cytokines in the intestinal phase...
June 5, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28573746/rifaximin-exerts-beneficial-effects-in-pi-ibs-mouse-model-beyond-gut-microbiota
#9
Yu Jin, Xiaoyang Ren, Gangping Li, Ying Li, Lei Zhang, Huan Wang, Wei Qian, Xiaohua Hou
BACKGROUND AND AIMS: Rifaximin is a minimally absorbed antibiotic which has shown efficacy in irritable bowel syndrome (IBS) patients. However, the mechanism how it effects in IBS is still incompletely defined. In this study, we used Trichinella spiralis infected PI-IBS mouse model, to assess the action of rifaximin on visceral hypersensitivity, barrier function, gut inflammation and microbiota. METHODS: PI-IBS model was established by Trichinella spiralis infection in mice...
June 1, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28524239/oral-contraceptive-pills-risky-or-protective-in-case-of-trichinella-spiralis-infection
#10
Marwa A Hasby Saad, Dina A Radi, Eiman A Hasby
AIM: to investigate how Trichinella spiralis infection can be affected by contraceptive pills invivo. METHODS: included six groups of female Wistar rats; healthy, Trichinella infected, receiving combined contraceptive pills (COCPs), receiving progestin only pills (POPs), infected receiving COCPs and infected receiving POPs. Parasite burden was measured (two gender worm counts, gravidity, larvae/muscle and RCI). Histopathological examination, immunohistochemical detection of C-kit mast cells & Foxp3+ T-reg...
May 19, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28499980/morphological-and-molecular-identification-of-sarcocystis-arctica-sarcocysts-in-three-red-foxes-vulpes-vulpes-from-the-czech-republic
#11
Ivan Pavlásek, Ondřej Máca
Muscular sarcocystosis by Sarcocystis arctica was found for the first time in the Czech Republic, in different muscles of red fox (Vulpes vulpes). Cysts were slim, elongated, thread-like, whitish, 1-7mm long, and 206-270μm wide; bradyzoites were 7.9×2.7μm in unstained wet mounts and 9.2×2.9μm in cyst Giemsa-stained smears. The cyst wall was thin, with short villi-like protrusions, and no host response was observed in the histological sections. Examination of the distribution and intensity of sarcocysts in 17 different muscle groups revealed that the highest intensity was in the cranial tibial muscle (>15 cysts in compressoria), followed by the diaphragm, forearm, and other groups (with intensities of 3-15 cysts in compressoria)...
May 9, 2017: Parasitology International
https://www.readbyqxmd.com/read/28475269/ultrastructural-preservation-of-tissues-and-their-reaction-to-the-infection-with-trichinella-in-the-el-plomo-mummy-muscle-fiber-ultrastructure-and-trichinosis-mummy-of-the-cerro-el-plomo
#12
Rodríguez Héctor, Espinoza-Navarro Omar, Mercedes González, Castro Mario
The El Plomo mummy was a pre-Columbian Incan child who was found mummified in the Andes Mountains above an altitude of 17,700 feet. In the environment, natural mummification occurred due to low temperatures and strong winds. Dating measurements (relative dating) by experts from the National Museum of Natural History of Chile established that the mummified body corresponds the Inca period (1,450 to 1,500 AD). In 2003, the body was transferred to the University of Chile Medical School for exhaustive medical examination...
May 5, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28456661/trichinella-spiralis-impact-on-mesenchymal-stem-cells-immunohistochemical-study-by-image-analyzer-in-murine-model
#13
Marwa A Hasby Saad, Eiman A Hasby
This study aims to elucidate whether Trichinella spiralis infection or its crude antigen administration can stimulate recruitment of CD105(+ve)/CD45(-ve) cells that could represent MSCs in intestine and skeletal muscle of experimental BALB/c albino mice compared to healthy control mice. Studied mice were divided into: 20 healthy control, 20 with orally induced T. spiralis infection, 20 received adult worm crude antigen orally and 20 received larval crude antigen intramuscular. According to specific timing schedule, mice were sacrificed and tissue sections were examined for CD105 and CD45 immunohistochemical expression using image J image analyzing software, to compare different study groups...
April 27, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28445612/influence-of-adjuvant-formulation-on-inducing-immune-response-in-mice-immunized-with-a-recombinant-serpin-from-trichinella-spiralis
#14
J Xu, X Bai, L B Wang, H N Shi, J W B van der Giessen, P Boireau, M Y Liu, X L 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
#15
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
#16
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...
June 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
#17
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
#18
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
#19
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
#20
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
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