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https://www.readbyqxmd.com/read/28807305/evaluation-of-the-priocheck%C3%A2-trichinella-aad-kit-for-the-digestion-and-recovery-of-larvae-in-pork-horse-meat-and-wild-meat
#1
Kelly Konecsni, Cheryl Scheller, Brad Scandrett, Patrik Buholzer, Alvin Gajadhar
The artificial digestion magnetic stirrer method using pepsin protease and hydrochloric acid is the standard assay for the detection of Trichinella larvae in muscle of infected animals. Recently, an alternative enzyme, serine protease, was employed in the development of a commercially available digestion kit (PrioCHECK™ Trichinella AAD Kit). This assay requires a higher digestion temperature of 60°C which kills the larvae during the digestion process, mitigating the risk of environmental contamination from the parasite...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28761478/m-rna-gene-expression-of-inf-%C3%AE-and-il-10-during-intestinal-phase-of-trichinella-spiralis-after-myrrh-and-albendazole-treatment
#2
Hanaa Y Bakir, Rasha Ah Attia, Abeer E Mahmoud, Zedan Ibraheim
BACKGROUND: The protective response developed against Trichinella spiralis infection provokes immune and inflammatory responses mediated by cytokines released from T helper cells. We aimed to evaluate the effect of albendazole or myrrh on the expression of IFN-γ and IL-10 in BALB/c mice infected with T. spiralis. METHODS: This study was done at the Animal House of Faculty of Medicine, Assiut University (Assiut, Egypt) from April to December 2015. Mice were infected with 300 T...
April 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28761470/intraperitoneal-inoculation-an-atypical-route-of-trichinella-spiralis-infection
#3
Peng Jiang, Zi Fang Zhang, Zhong Quan Wang, Ruo Dan Liu, Xi Zhang, Ge Ge Sun, Xin Qi, Li Wang, Jing Cui
BACKGROUND: The intraperitoneal injection is a common method for establishing the experimental animal model infected with parasites. The aim of this study was to investigate if the intraperitoneal injection was another route of Trichinella spiralis infection. METHODS: From June to July 2015, twenty BALB/c mice were intraperitoneally injected with 300 T. spiralis muscle larvae in Department of Parasitology, Medical College, Zhengzhou University, China. The larvae per gr (LPG) muscle from the infected mice and the reproductive capacity index (RCI) of T...
January 2017: Iranian Journal of Parasitology
https://www.readbyqxmd.com/read/28702376/nematode-species-identification-current-status-challenges-and-future-perspectives-for-cyathostomins
#4
Christina M Bredtmann, Jürgen Krücken, Jayaseelan Murugaiyan, Tetiana Kuzmina, Georg von Samson-Himmelstjerna
Human and animal health is globally affected by a variety of parasitic helminths. The impact of co-infections and development of anthelmintic resistance requires improved diagnostic tools, especially for parasitic nematodes e.g., to identify resistant species or attribute pathological effects to individual species or particular species combinations. In horses, co-infection with cyathostomins is rather a rule than an exception with typically 5 to 15 species (out of more than 40 described) per individual host...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28686494/antibodies-to-various-zoonotic-pathogens-detected-in-feral-swine-sus-scrofa-at-abattoirs-in-texas-usa
#5
Kerri Pedersen, Nathan E Bauer, Sandra Rodgers, Luis R Bazan, Brian T Mesenbrink, Thomas Gidlewski
The zoonotic risk posed to employees by slaughtering feral swine (Sus scrofa) at two abattoirs in Texas was assessed by testing feral swine serum samples for exposure to influenza A virus, Leptospira, Trichinella spiralis, and Toxoplasma gondii. Blood was collected from a total of 376 feral swine between the two facilities during six separate collection periods in 2015. Antibodies to one or more serovars of Leptospira were identified in 48.9% of feral swine tested, with Bratislava and Pomona as the most commonly detected serovars, and antibodies to influenza A virus were detected in 14...
July 7, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28683055/two-outbreaks-of-trichinellosis-linked-to-consumption-of-walrus-meat-alaska-2016-2017
#6
Yuri P Springer, Shannon Casillas, Kathryn Helfrich, Deanna Mocan, Marscleite Smith, Gabriela Arriaga, Lyndsey Mixson, Louisa Castrodale, Joseph McLaughlin
During 1975-2012, CDC surveillance identified 1,680 trichinellosis cases in the United States with implicated food items; among these cases, 1,219 were attributed to consumption of raw or pork products, and 461 were attributed to nonpork products. Although trichinellosis in the United States has historically been associated with consumption of pork, multiple nonporcine species of wild game also are competent hosts for Trichinella spp. and have been collectively implicated in the majority of trichinellosis cases since the late 1990s (1-4) (Figure 1)...
July 7, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28679338/reduced-interstitial-cells-of-cajal-and-increased-intraepithelial-lymphocytes-are-associated-with-development-of-small-intestinal-bacterial-overgrowth-in-post-infectious-ibs-mouse-model
#7
Binrui Chen, Shuwen Zhu, Lijun Du, Huiqin He, John J Kim, Ning Dai
OBJECTIVE: Intestinal dysmotility and immune activation are likely involved in the pathogenesis of small intestinal bacteria overgrowth (SIBO) in irritable bowel syndrome (IBS). We aimed at investigating the role of interstitial cells of Cajal (ICC) and intestinal inflammation in the development of SIBO using a post-infectious IBS (PI-IBS) mouse model. MATERIALS AND METHODS: NIH mice were randomly infected with Trichinella spiralis. Visceral sensitivity and stool pattern were assessed at 8-weeks post-infection (PI)...
July 5, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28667523/development-and-evaluation-of-a-rapid-diagnostic-immunochromatographic-device-to-detect-antibodies-in-sera-from-intestinal-capillariasis-cases
#8
Pewpan M Intapan, Rutchanee Rodpai, Oranuch Sanpool, Tongjit Thanchomnang, Lakkhana Sadaow, Issarapong Phosuk, Wanchai Maleewong
Intestinal capillariasis, a fish-borne nematodiasis, is an important emerging zoonotic disease. Patients present clinical symptoms of borborygmus chronic diarrhea, intermittent abdominal pain, weight loss, and several degrees of painless lower-leg edema. Death may occur in cases of misdiagnosis and improper treatment. Diagnosis is difficult because of the atypical clinical symptoms and diagnostic confusion with diarrhea caused by gastrointestinal cancer, opportunistic infections in human immunodeficiency virus patients, and hyperthyroidism...
June 30, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28665952/intrinsic-and-extrinsic-factors-related-to-pathogen-infection-in-wild-small-mammals-in-intensive-milk-cattle-and-swine-production-systems
#9
Rosario Lovera, María Soledad Fernández, Jens Jacob, Nidia Lucero, Gabriel Morici, Bibiana Brihuega, María Isabel Farace, Jorge Caracostantogolo, Regino Cavia
BACKGROUND: Understanding the ecological processes that are involved in the transmission of zoonotic pathogens by small mammals may aid adequate and effective management measures. Few attempts have been made to analyze the ecological aspects that influence pathogen infection in small mammals in livestock production systems. We describe the infection of small mammals with Leptospira spp., Brucella spp., Trichinella spp. and Cysticercus fasciolaris and assess the related intrinsic and extrinsic factors in livestock production systems in central Argentina at the small mammal community, population and individual levels...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28664463/therapeutic-potential-of-helminths-in-autoimmune-diseases-helminth-derived-immune-regulators-and-immune-balance
#10
REVIEW
Meng Wang, Linxiang Wu, Rennan Weng, Weihong Zheng, Zhongdao Wu, Zhiyue Lv
Helminths have accompanied human throughout history by releasing immune-evasion molecules that could counteract an aberrant immune response within the host. In the past decades, helminth infections are becoming less prevalent possibly due to the developed sanitation. Meanwhile, the incidence of autoimmune diseases is increasing, which cannot be exclusively explained by the changes of susceptibility genes. While the hygiene hypothesis casts light on the problem. The infections of helminths are believed to interact with and regulate human immunity with the byproduct of suppressing the autoimmune diseases...
August 2017: Parasitology Research
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
#11
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
#12
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...
August 2017: Parasitology Research
https://www.readbyqxmd.com/read/28620388/trichinella-spiralis-calreticulin-binds-human-complement-c1q-as-an-immune-evasion-strategy
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
M A Hasby Saad, D A Radi, E A Hasby
The aim of this study was to investigate how Trichinella spiralis infection can be affected by contraceptive pills in vivo. 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; adult worm counts, gravidity, larvae and reproductive capacity index). Histopathological examination, immunohistochemical detection of C-kit+ mast cells and Foxp3+ T-reg...
May 19, 2017: Parasite Immunology
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