Parasites

Fri, 10/04/2019 - 03:38
Author(s): Alessandra Snak, Gilberto Serighelli Junior, Giulia Von Tonnemann Pilati, Carlos Czpak Kroetz, Wagner Consoni, José Cristani, Anderson Barbosa de MouraAbstractNeospora caninum is known to cause reproductive disturbances in several animal species, such as cattle, sheep, and goats. However, research on the effects of N. caninum on reproduction in pigs is limited. The objective of this...
Wed, 10/02/2019 - 03:41
Toxoplasma gondii is a ubiquitous foodborne protozoan that can infect humans at low dose and displays different prevalences among countries in the world. Ingestion of food or water contaminated with small amounts of T. gondii oocysts may result in human infection. However, there are no regulations for monitoring oocysts in food, mainly because of a lack of standardized methods to detect them. The...
Mon, 09/23/2019 - 03:30
Author(s): Tamirat Tefera Temesgen, Lucy Jane Robertson, Kristoffer Relling TysnesAbstractFoodborne parasites (FBP) are of major public health importance and warrant appropriate detection and control strategies. Most of the FBP considered for risk-ranking by a panel of experts are potentially transmitted via consumption of contaminated fresh produce, including berries. In this study we focused on...
Sat, 09/14/2019 - 03:36
Author(s): Mohamed Mammeri, Aurélie Chevillot, Ilham Chenafi, Myriam Thomas, Christine Julien, Isabelle Vallée, Bruno Polack, Jérôme Follet, Karim Tarik AdjouAbstractCryptosporidium is an obligate intracellular protist parasite infecting a wide range of vertebrate hosts and causes significant intestinal disease in both animals and humans, as some species are zoonotic. Cattle and especially calves...
Sat, 09/14/2019 - 03:35
Author(s): Erfaneh Amoueyan, Sajjad Ahmad, Joseph N.S. Eisenberg, Daniel GerrityAbstractDue to rapid growth in the potable reuse industry, there is a need to better characterize the associated pathogen risks and degree of attenuation achieved by various treatment trains. It is also important to understand how emerging treatment frameworks compare to the historical practice of de facto reuse. As...
Sat, 09/14/2019 - 03:35
Author(s): Lucy J. Robertson, C. Graham Clark, John J. Debenham, J.P. Dubey, Martin Kváč, Junqiang Li, Francisco Ponce-Gordo, Una Ryan, Gereon Schares, Chunlei Su, Anastasios D. TsaousisAbstractEmerging infectious diseases are frequently zoonotic, often originating in wildlife, but enteric protozoa are considered relatively minor contributors. Opinions regarding whether pathogenic enteric...
Sat, 09/14/2019 - 03:34
Author(s): Matthew M. Hitchcock, Catherine A. Hogan, Indre Budvytiene, Niaz BanaeiAbstractThough the FilmArray GI Panel has a reported aggregate specificity and reproducibility of >97% and > 99%, respectively, the reproducibility is less understood in clinical practice. We measured the reproducibility of positive results for low-prevalence pathogens. Samples with positive results for...
Sat, 09/14/2019 - 03:33
Author(s): Julie Alice Simon, Eva Chancel, Pauline Hubert, Dominique Aubert, Isabelle Villena, Emmanuelle Gilot-Fromont, Marie-Lazarine PoulleAbstractToxoplasma gondii is the parasite responsible for toxoplasmosis, a highly prevalent zoonosis that affects humans and warm-blooded animals. Faeces of infected cats can contain millions of T. gondii oocysts, which remain infectious in the environment...
Sat, 09/14/2019 - 03:33
Author(s): Katharina Lichtmannsperger, Barbara Hinney, Anja Joachim, Thomas WittekAbstractTo obtain information about the occurrence and genotype distribution of G. intestinalis and C. parvum in Austrian cattle, faecal samples from diarrhoeic calves younger than 180 days of age originating from 70 farms were examined. Of the 177 faecal samples, 27.1% were positive for Giardia cysts (...
Sat, 09/14/2019 - 03:26
Cryptosporidiosis is a significant cause of gastroenteritis in both humans and livestock in developing countries. The only FDA-approved drug available against the same is nitazoxanide, with questionable efficacy in malnourished children and immunocompromised patients. Recent in vitro studies have indicated the viability of Triacsin C as a potential drug candidate, which targets the parasite’s...
Sat, 09/14/2019 - 01:03
Available online 12 September 2019 Author(s): Bruna Farias Alves, Solange Maria Gennari, Solange Oliveira, Herbert Sousa Soares, Carlos Adam Conte-Junior, Jitender Prakash Dubey, Marcos Amaku, Hilda Fátima Jesus PenaAbstractThe present study evaluated the viability of Toxoplasma gondii tissue cysts in dry-aged pork loins (m. longissimus) after 14, 21 and 28 days under controlled temperature (0ºC...
Mon, 09/09/2019 - 17:00
Nadia Velázquez-Hernández, Ana Yuliana Avilés Ávila, Manuel Arturo Rivas-González, Selma Paola Delgado-González, Gustavo Alexis Alvarado-Félix, Ángel Osvaldo Alvarado-Félix, Isabel Beristain-Garcia, Cosme Alvarado-Esquivel We aimed to determine the knowledge and practices regarding toxoplasmosis among housewives in the northern Mexican city of Durango. One hundred eighty-five women (mean age: 41...
Mon, 09/02/2019 - 01:03
Available online 31 August 2019 Author(s): Jin-Lei Wang, Hany M. Elsheikha, Ting-Ting Li, Jun-Jun He, Meng-Jie Bai, Qin-Li Liang, Xing-Quan Zhu, Wei CongABSTRACTThe obligate intracellular parasite Toxoplasma gondii can infect nearly all warm-blooded animals including humans. Although infection with this parasite is generally benign, severe illness may occur in the infected individuals if their...
Mon, 08/26/2019 - 20:00
Cyclospora cayetanensis is a coccidian parasite that has been associated with foodborne outbreaks of gastrointestinal illnesses. Raspberries have been implicated as vehicle of infection in some of these outbreaks. Most of the molecular techniques used for the detection of parasites commonly use the 18s rRNA as a target gene, which is highly conserved. The conserved nature of 18s rRNA gene among...
Sun, 08/11/2019 - 01:04
Available online 9 August 2019 Author(s): Junqiang Li, Ke Shi, Fangfang Sun, Tingwen Li, Rongjun Wang, Sumei Zhang, Fuchun Jian, Changshen Ning, Longxian ZhangAbstractCryptosporidium spp., Giardia duodenalis, Cyclospora cayetanensis, and Enterocytozoon bieneusi are known etiological agents of self-limiting diarrhea, chronic disorders, and severe debilitating illnesses in humans, particularly...
Wed, 07/24/2019 - 01:07
Publication date: Available online 23 July 2019Source: Microbial Risk AnalysisAuthor(s): Ursula Gonzales-Barron, Anne Thébault, Pauline Kooh, Laurence Watier, Moez Sanaa, Vasco CadavezAbstractIn order to design effective public health strategies, and, in particular, effective food safety interventions to reduce the burden of foodborne disease, the most important sources of enteric illnesses...
Tue, 07/23/2019 - 20:00
Giardia lamblia, a single-celled eukaryote, colonizes and thrives in the small intestine of humans. Because of its compact and reduced genome, Giardia has adapted a “minimalistic” life style, as it becomes dependent on available resources of the small intestine. Because Giardia expresses fewer sphingolipid (SL) genes—and glycosphingolipids are critical for encystation—we investigated the SL...
Thu, 07/18/2019 - 13:19
Abstract Aims The objective of this study was to assess the probiotic potential of genuine strains of Bifidobacterium longum 51A and Weissella paramesenteroides WpK4, in experimental giardiasis. Methods and Results The bacteria were administered orally to gerbils (Meriones unguiculatus) 10 days before oral infection with trophozoites of Giardia lamblia. After 7 days of infection, the animals...
Sat, 07/06/2019 - 07:47
Abstract The issue of whether market fish can be involved in the transmission of Toxoplasma gondii in the marine environment is highly debated since toxoplasmosis has been diagnosed frequently in cetaceans stranded along the Mediterranean coastlines in recent times. To support the hypothesis that fishes can harbour and effectively transmit the parasite to top‐of‐the‐food‐chain marine organisms...
Thu, 06/27/2019 - 01:14
Available online 24 June 2019 Author(s): Karen Shapiro, Minji Kim, Veronica B. Rajal, Michael J. Arrowood, Andrea Packham, Beatriz Aguilar, Stefan WuertzAbstractPathogen contamination of fresh produce presents a health risk for consumers; however, the produce industry still lacks adequate tools for simultaneous detection of protozoan parasites. Here, a simple multiplex PCR (mPCR) assay was...
Fri, 06/14/2019 - 01:12
Available online 13 June 2019 Author(s): Romina Zanabria, Manon Racicot, Alexandre Leroux, Liu Xucen, Mathieu Cormier, Cécile Ferrouillet, Julie Arsenault, Anna Mackay, Mansel Griffiths, Rick Holley, Tom Gill, Sylvain Charlebois, Jeffrey Farber, Aamir Fazil, Sylvain QuessyAbstractDecreasing the health burden caused by foodborne pathogens is challenging and it depends on the identification of the...
Thu, 06/06/2019 - 17:00
L. Brock Thornton, Paige Teehan, Katherine Floyd, Christian Cochrane, Amy Bergmann, Bryce Riegel, Andrew J. Stasic, Manlio Di Cristina, Silvia N. J. Moreno, Paul D. Roepe, Zhicheng Dou Toxoplasma gondii is an apicomplexan parasite with the ability to use foodborne, zoonotic, and congenital routes of transmission that causes severe disease in immunocompromised patients. The parasites harbor a...
Wed, 05/22/2019 - 17:00
Katharina Loreck, Sylvia Mitrenga, Diana Meemken, Regina Heinze, Annett Reissig, Elke Mueller, Ralf Ehricht, Claudia Engemann, Matthias Greiner In order to monitor the occurrence of zoonotic agents in pig herds as well as to improve herd health management, the development of new cost-effective diagnostic methods for pigs is necessary. In this study, a protein microarray-based assay for the...
Tue, 05/21/2019 - 11:00
Giardia lamblia, one of the most common protozoal infections of the human intestine, is an important worldwide cause of diarrheal disease, malabsorption, malnutrition, delayed cognitive development in children, and protracted postinfectious syndromes. Despite its medical importance, no human vaccine is available against giardiasis. A crude veterinary vaccine has been developed, and experimental...
Fri, 05/10/2019 - 17:00
Anita W. M. Suijkerbuijk, Eelco A. B. Over, Marieke Opsteegh, Huifang Deng, Paul F. van Gils, Axel A. Bonačić Marinović, Mattijs Lambooij, Johan J. Polder, Talitha L. Feenstra, Joke W. B. van der Giessen, G. Ardine de Wit, Marie-Josee J. Mangen In the Netherlands, toxoplasmosis ranks second in disease burden among foodborne pathogens with an estimated health loss of 1,900 Disability Adjusted...
Tue, 04/30/2019 - 09:35
The above article from the Journal of Food Safety, published online on 20 November 2018 in Wiley Online Library (https://onlinelibrary.wiley.com/doi/abs/10.1111/jfs.12575), has been retracted by agreement between the journal Editor‐in‐Chief, Vivian Wu and Wiley Periodicals, Inc. The retraction has been agreed due to evidence indicating that the peer review of this paper was compromised....
Mon, 04/08/2019 - 20:00
Gamma Irradiation Influences the Survival and Regrowth of Antibiotic-Resistant Bacteria and Antibiotic-Resistance Genes on Romaine Lettuce Vaishali Dharmarha1, Giselle Guron2, Renee R. Boyer1, Brendan A. Niemira3, Amy Pruden2, Laura K. Strawn1 and Monica A. Ponder1* 1Department of Food Science and Technology, Virginia Tech, Blacksburg, VA, United States 2Department of Civil and Environmental...
Sun, 03/17/2019 - 01:12
Available online 16 March 2019 Author(s): Panagiota Ligda, Edwin Claerebout, Lucy J. Robertson, Smaragda SotirakiAbstractMarine bivalve shellfish are of public health interest because they can accumulate pollutants in their tissues. As they are usually consumed raw or lightly cooked, they are considered to be a possible source of foodborne infections, including giardiosis and cryptosporidiosis....
Mon, 03/11/2019 - 17:00
Zi-Qi Lin, Soo-Wah Gan, Szu-Yu Tung, Chun-Che Ho, Li-Hsin Su, Chin-Hung Sun Giardia lamblia becomes dormant differentiation into a water-resistant cyst that can infect a new host. Synthesis of three cyst wall proteins (CWPs) is the fundamental feature of this differentiation. Myeloid leukemia factor (MLF) proteins are involved in cell differentiation, and tumorigenesis in mammals, but little is...
Thu, 02/14/2019 - 17:00
Marcelle Mareze, Aline do Nascimento Benitez, Ana Pérola Drulla Brandão, Fernanda Pinto-Ferreira, Ana Carolina Miura, Felippe Danyel Cardoso Martins, Eloiza Teles Caldart, Alexander Welker Biondo, Roberta Lemos Freire, Regina Mitsuka-Breganó, Italmar Teodorico Navarro Human toxoplasmosis, a protozoonosis caused Toxoplasma gondii, has been described as a worldwide foodborne disease with important...
Fri, 12/21/2018 - 01:11
Available online 18 December 2018 Author(s): Yehua Zhang, Rongsheng Mi, Yan Huang, Luming Xia, Yushu Cai, Haiyan Jia, Xiaoli Zhang, Heng Yang, Xu Wang, Xiangan Han, Zhaoguo ChenAbstractToxoplasma gondii in pork products has become an important public health problem worldwide. However, the prevalence of pork with T. gondii has rarely been reported. In this study, we assessed the prevalence and...
Fri, 12/07/2018 - 01:10
Publication date: March 2019 , Volume 149Author(s): Mattijs S. Lambooij, Jorien Veldwijk, Paul van Gils, Marie-Josee J. Mangen, Eelco Over, Anita Suijkerbuijk, Johan Polder, G. Ardine de Wit, Marieke OpsteeghAbstractConsumption of raw or undercooked meat increases the risk of infection with Toxoplasma gondii. Freezing meat products can eliminate this risk. Freezing of meat may affect consumers'...
Tue, 10/23/2018 - 06:17
Volume 104Issue 5Page 560-565October 2018
Thu, 10/11/2018 - 20:00
Cyclospora cayetanensis is a food-borne intestinal human parasite that causes outbreaks of diarrhea. There is a need for efficient laboratory methods for strain-level characterization to assist in outbreak invest...
Tue, 09/11/2018 - 01:09
Hui Dong, Ruijing Su, Yaoyao Lu, Mengyao Wang, Jing Liu, Fuchun Jian, Yurong Yang
Fri, 08/31/2018 - 11:00
Neospora caninum is a protozoan parasite closely related to Toxoplasma gondii. Neosporosis caused by N. caninum is considered one of the main causes of abortion in cattle and nervous-system dysfunction in dogs, and identification of the virulence factors of this parasite is important for the development of control measures. Here, we used a luciferase reporter assay to screen the dense granule...
Fri, 08/31/2018 - 11:00
In this study, we assessed the prevalence and genetic characteristics of Cryptosporidium in sheep from 10 provinces in China. Fecal samples from 1,035 sheep originating from 16 farms were collected, and 295 (28.5%) were found to be Cryptosporidium positive by nested PCR. Cryptosporidium was detected at all farms, with infection rates between 5.7% and 50.0%. Three Cryptosporidium species were...
Sat, 08/11/2018 - 01:12
Available online 10 August 2018 Author(s): Niroshan Thanthrige-Don, Oliver Lung, Tara Furukawa-Stoffer, Cody Buchanan, Tomy Joseph, Dale L. Godson, John Gilleard, Trevor Alexander, Aruna AmbagalaAbstractRespiratory and enteric diseases continue to be two major causes of economic losses to the cattle industry worldwide. Despite their multifactorial etiology, the currently available diagnostic...
Thu, 07/19/2018 - 03:00
Journal of Food Protection, Volume 81, Issue 8, Page 1373-1378, August 2018.
Fri, 07/06/2018 - 01:14
Publication date: Available online 1 February 2018Source: Microbial Risk AnalysisAuthor(s): Mary E. Schoen, Michael A. Jahne, Jay GarlandAbstractWe assessed the annual probability of infection resulting from non-potable exposures to distributed greywater and domestic wastewater treated by an aerobic membrane bioreactor (MBR) followed by chlorination. A probabilistic quantitative microbial risk...

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