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Taenia solium

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https://www.readbyqxmd.com/read/29145875/re-visiting-the-detection-of-porcine-cysticercosis-based-on-full-carcass-dissections-of-naturally-taenia-solium-infected-pigs
#1
Mwelwa Chembensofu, K E Mwape, I Van Damme, E Hobbs, I K Phiri, M Masuku, G Zulu, A Colston, A L Willingham, B Devleesschauwer, A Van Hul, A Chota, N Speybroeck, D Berkvens, P Dorny, S Gabriël
BACKGROUND: Taenia solium is a neglected zoonotic parasite. The performances of existing tools for the diagnosis of porcine cysticercosis need further assessment, and their shortcomings call for alternatives. The objective of this study was to evaluate the performance of tongue palpation and circulating antigen detection for the detection of porcine cysticercosis in naturally infected pigs of slaughter age compared to full carcass dissections (considered the gold standard). Additionally, alternative postmortem dissection procedures were investigated...
November 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29143908/the-hp10-taenia-monoclonal-antibody-based-elisa-detects-a-similar-protein-in-the-vesicular-fluid-of-taenia-hydatigena
#2
Maria M Cortez, Glenda C Rojas, R Michael E Parkhouse
Diagnosis of Taenia solium cysticercosis in endemic rural communities depends on serological tests, as typically there is no access to imaging facilities. The HP10 antigen ELISA (HP10 Ag ELISA), which detects a high molecular weight secreted protein of viable metacestodes, has been employed for the diagnosis of both human and porcine cysticercosis in such communities. In this communication, we formally demonstrate that the HP10 Ag ELISA, already known to function for the detection of T. saginata and T. solium cysticercosis, also detects a similar high molecular weight antigen of T...
November 16, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29122002/a-european-network-for-food-borne-parasites-euro-fbp-meeting-report-on-analytical-methods-for-food-borne-parasites-in-human-and-veterinary-diagnostics-and-in-food-matrices
#3
Christian Klotz, Barbara Šoba, Miha Skvarč, Sarah Gabriël, Lucy J Robertson
Food-borne parasites (FBPs) are a neglected topic in food safety, partly due to a lack of awareness of their importance for public health, especially as symptoms tend not to develop immediately after exposure. In addition, methodological difficulties with both diagnosis in infected patients and detection in food matrices result in under-detection and therefore the potential for underestimation of their burden on our societies. This, in consequence, leads to lower prioritization for basic research, e.g. for development new and more advanced detection methods for different food matrices and diagnostic samples, and thus a vicious circle of neglect and lack of progress is propagated...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29055271/neurocysticercosis-as-an-infectious-acquired-epilepsy-worldwide
#4
REVIEW
Doodipala Samba Reddy, Randy Volkmer
Aside from brain injury and genetic causes, there is emerging information on brain infection and inflammation as a common cause of epilepsy. Neurocysticercosis (NCC), the most common cause of epilepsy worldwide, is caused by brain cysts from the Taenia solium tapeworm. In this article, we provide a critical analysis of current and emerging information on the relationship between NCC infection and epilepsy occurrence. We searched PubMed and other databases for reports on the prevalence of NCC and incidence of epilepsy in certain regions worldwide...
November 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29036211/orally-administered-taenia-solium-calreticulin-prevents-experimental-intestinal-inflammation-and-is-associated-with-a-type-2-immune-response
#5
Fela Mendlovic, Mayra Cruz-Rivera, Jose Alfredo Diaz-Gandarilla, Marco Antonio Flores-Torres, Guillermina Avila, Maria Perfiliev, Ana Maria Salazar, Lourdes Arriaga-Pizano, Patricia Ostrosky-Wegman, Ana Flisser
Intestinal helminth antigens are inducers of type 2 responses and can elicit regulatory immune responses, resulting in dampened inflammation. Several platyhelminth proteins with anti-inflammatory activity have been reported. We have identified, cloned and expressed the Taenia solium calreticulin (rTsCRT) and shown that it predominantly induces a type 2 response characterized by IgG1, IL-4 and IL-5 production in mice. Here, we report the rTsCRT anti-inflammatory activity in a well-known experimental colitis murine model...
2017: PloS One
https://www.readbyqxmd.com/read/29033926/micrornas-in-taenia-solium-neurocysticercosis-insights-as-promising-agents-in-host-parasite-interaction-and-their-potential-as-biomarkers
#6
REVIEW
Renzo Gutierrez-Loli, Miguel A Orrego, Oscar G Sevillano-Quispe, Luis Herrera-Arrasco, Cristina Guerra-Giraldez
MicroRNAs (miRNAs) are short, endogenous, non-coding, single-stranded RNAs involved in post-transcriptional gene regulation. Although, several miRNAs have been identified in parasitic helminths, there is little information about their identification and function in Taenia. Furthermore, the impact of miRNAs in neurocysticercosis, the brain infection caused by larvae of Taenia solium is still unknown. During chronic infection, T. solium may activate numerous mechanisms aimed to modulate host immune responses...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29032785/two-glutathione-transferase-isoforms-isolated-from-juvenile-cysts-of-taenia-crassiceps-identification-purification-and-characterization
#7
G Maldonado, G Nava, A Plancarte
We identified and characterized the first two glutathione transferases (GSTs) isolated from juvenile cysts of Taenia crassiceps (EC 2.5.1.18). The two glutathione transferases (TcGST1 and TcGST2) were purified in a single-step protocol using glutathione (GSH)-sepharose chromatography in combination with a GSH gradient. The specific activities of TcGST1 and TcGST2 were 26 U mg-1 and 19 U mg-1, respectively, both at 25°C and pH 6.5 with 1-chloro-2,4-dinitrobenzene (CDNB) and GSH as substrates. The K m(CDNB) and K cat(CDNB) values for TcGST1 and TcGST2 (0...
October 16, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/29020381/antibody-banding-patterns-of-the-enzyme-linked-immunoelectrotransfer-blot-eitb-and-brain-imaging-findings-in-patients-with-neurocysticercosis
#8
Gianfranco Arroyo, Silvia Rodriguez, Andres G Lescano, Karen Alroy, Javier A Bustos, Saul Santivañez, Isidro Gonzales, Herbert Saavedra, E Javier Pretell, Armando E Gonzalez, Robert H Gilman, Victor C W Tsang, Hector H Garcia
Background: The enzyme-linked immunoelectrotransfer blot (EITB) assay is the reference serological test for neurocysticercosis (NCC). A positive result on EITB does not always correlate with the presence of active infections in the central nervous system (CNS), and patients with a single viable brain cyst may be EITB negative. Nonetheless, EITB antibody banding patterns appears to be related with the expression of three protein families of Taenia solium, and in turn with the characteristics of NCC in the CNS (type, stage and burden of viable cysts)...
September 4, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29016332/porcine-cysticercosis-possible-cross-reactivity-of-taenia-hydatigena-to-gp50-antigen-in-the-enzyme-linked-immunoelectrotransfer-blot-assay
#9
Claudio Muro, Luis A Gomez-Puerta, Robert H Flecker, Ricardo Gamboa, Percy Vilchez Barreto, Pierre Dorny, Victor C W Tsang, Robert H Gilman, Armando E Gonzalez, Hector H Garcia Lescano, Seth E O'Neal, For The Cysticercosis Working Group In Peru
The lentil lectin glycoprotein enzyme-linked immunoelectrotransfer blot (LLGP EITB, reported sensitivity 99% and specificity 100%) is used as a serologic marker of exposure to Taenia solium in pigs. However, only a limited number of parasites have been evaluated for cross reactivity. Pigs may host other related cestode infections, including Taenia hydatigena, which have not been formally evaluated for cross-reactions. We investigated a corral in Tumbes, Peru, a region where a cysticercosis elimination demonstration project was completed in 2012...
October 2, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28994510/isolated-lingual-cysticercosis-a-rare-case-diagnosed-on-cytology
#10
Mukta Pujani, Mohd Jaseem Hassan, Sabina Khan, Sujata Jetley
Cysticercosis is caused by larval stage of Taenia solium called cysticercus cellulosae. Cysticercosis most commonly infects skeletal muscles, subcutaneous tissues, brain and ocular tissue. On extensive search of literature, only around 64 cases of lingual cysticercosis have been reported till date. We report a case of cysticercosis of tongue in a 35-year-old male who presented with a painless, slowly growing swelling over the lateral border of tongue. Fine needle aspiration cytology revealed wavy integument of cysticercus cellulosae alongwith inflammatory cells...
October 10, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28969835/serological-diagnosis-of-taenia-solium-in-pigs-no-measurable-circulating-antigens-and-antibody-response-following-exposure-to-taenia-saginata-oncospheres
#11
P Dorny, V Dermauw, A Van Hul, C Trevisan, S Gabriël
Taenia solium taeniasis/cysticercosis is a zoonosis included in the WHO's list of neglected tropical diseases. Accurate diagnostic tools for humans and pigs are needed to monitor intervention outcomes. Currently used diagnostic tools for porcine cysticercosis all have drawbacks. Serological tests are mainly confronted with problems of specificity. More specifically, circulating antigen detecting tests cross-react with Taenia hydatigena and the possibility of transient antigens as a result of aborted infections is suspected...
October 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28955045/effect-of-transforming-growth-factor-%C3%AE-upon-taenia-solium-and-taenia-crassiceps-cysticerci
#12
Laura Adalid-Peralta, Gabriela Rosas, Asiel Arce-Sillas, Raúl J Bobes, Graciela Cárdenas, Marisela Hernández, Celeste Trejo, Gabriela Meneses, Beatriz Hernández, Karel Estrada, Agnes Fleury, Juan P Laclette, Carlos Larralde, Edda Sciutto, Gladis Fragoso
Taeniids exhibit a great adaptive plasticity, which facilitates their establishment, growth, and reproduction in a hostile inflammatory microenvironment. Transforming Growth Factor-β (TGFβ), a highly pleiotropic cytokine, plays a critical role in vertebrate morphogenesis, cell differentiation, reproduction, and immune suppression. TGFβ is secreted by host cells in sites lodging parasites. The role of TGFβ in the outcome of T. solium and T. crassiceps cysticercosis is herein explored. Homologues of the TGFβ family receptors (TsRI and TsRII) and several members of the TGFβ downstream signal transduction pathway were found in T...
September 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28945737/quantitative-multiplexed-proteomics-of-taenia-solium-cysts-obtained-from-the-skeletal-muscle-and-central-nervous-system-of-pigs
#13
José Navarrete-Perea, Marta Isasa, Joao A Paulo, Ricardo Corral-Corral, Jeanette Flores-Bautista, Beatriz Hernández-Téllez, Raúl J Bobes, Gladis Fragoso, Edda Sciutto, Xavier Soberón, Steven P Gygi, Juan P Laclette
In human and porcine cysticercosis caused by the tapeworm Taenia solium, the larval stage (cysts) can infest several tissues including the central nervous system (CNS) and the skeletal muscles (SM). The cyst's proteomics changes associated with the tissue localization in the host tissues have been poorly studied. Quantitative multiplexed proteomics has the power to evaluate global proteome changes in response to different conditions. Here, using a TMT-multiplexed strategy we identified and quantified over 4,200 proteins in cysts obtained from the SM and CNS of pigs, of which 891 were host proteins...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28932037/fine-needle-aspiration-cytology-of-cysticercosis-in-submandibular-gland
#14
Vaneet Kaur Sandhu, Upender Sharma, Navtej Singh, Geetika Goyal
Fine-needle aspiration cytology (FNAC) has emerged as simple, minimally invasive, low-cost, outpatient diagnostic modality for the evaluation of nodules caused by parasites. Cysticercosis is caused by larval stage of Taenia solium, pork tapeworm. It is endemic in Southeast Asia, Latin America and South Africa. We report a case of cysticercosis in a 25-year-old male who presented with painless swelling of submandibular gland which was diagnosed on FNAC. The patient was recommended antihelminthic therapy which resulted in complete resolution of the swelling...
May 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28931431/fasciclin-calcareous-corpuscle-binary-complex-mediated-protein-protein-interactions-in-taenia-solium-metacestode
#15
Chun-Seob Ahn, Jeong-Geun Kim, Young-An Bae, Seon-Hee Kim, Joo-Ho Shin, Yichao Yang, Insug Kang, Yoon Kong
BACKGROUND: Neurocysticercosis (NC) caused by Taenia solium metacestode (TsM) is a serious neurological disease of global concern. Diverse bioactive molecules involved in the long-term survival of TsM might contribute to disease progression. Fasciclin (Fas) is an extracellular protein that mediates adhesion, migration and differentiation of cells by interacting with other molecules. We hypothesized that TsMFas might bind to calcareous corpuscle (CC) through its adhesive property and participate in crucial protein-protein interactions, thus contributing to the creation of a symbiotic interactome network...
September 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28929415/pediatric-neurocysticercosis
#16
REVIEW
Pratibha Singhi, Arushi Gahlot Saini
Neurocysticercosis is the most common helminth infection of nervous system in humans caused by the encysted larvae of Taenia solium. It is a major cause of epilepsy in tropical areas and the most common cause of focal-onset seizures in North Indian children. Children with neurocysticercosis have pleomorphic manifestations depending on the location, number and viability of the cysts and host response. In endemic areas, neurocysticercosis should be clinically suspected in any child with recent-onset seizures, headache or focal motor deficits where there is no other suggestion of an underlying neurological disorder...
September 20, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28923896/experimental-and-theoretical-approaches-to-investigate-the-immunogenicity-of-taenia-solium-derived-ke7-antigen
#17
Raúl J Bobes, José Navarrete-Perea, Adrián Ochoa-Leyva, Víctor Hugo Anaya, Marisela Hernández, Jacquelynne Cervantes-Torres, Karel Estrada, Filiberto Sánchez-Lopez, Xavier Soberón, Gabriela Rosas, Cáris Maroni Nunes, Martín García-Varela, Rogerio Rafael Sotelo-Mundo, Alonso Alexis López-Zavala, Goar Gevorkian, Gonzalo Acero, Juan P Laclette, Gladis Fragoso, Edda Sciutto
Taenia solium cysticercosis, a parasitic disease that affects human health in various regions of the world, is preventable by vaccination. Both the 97-amino-acid-long KETc7 peptide and its carboxyl-terminal, 18-amino-acid-long sequence (GK-1) are found in Taenia crassiceps Both peptides, with proven protective capacity against cysticercosis, are part of the highly conserved, cestode-native, 264-amino-acid long protein KE7. KE7 belongs to a ubiquitously distributed family of proteins associated to membrane processes and may participate in several vital cell pathways...
September 18, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28923090/mapping-occurrence-of-taenia-solium-taeniosis-cysticercosis-and-areas-at-risk-of-porcine-cysticercosis-in-central-america-and-the-caribbean-basin
#18
Uffe Christian Braae, Brecht Devleesschauwer, Fortune Sithole, Ziqi Wang, Arve Lee Willingham
BACKGROUND: This study aimed to map the occurrence of Taenia solium taeniosis/cysticercosis at national level within Central America and the Caribbean basin, and to map the distribution of porcine cysticercosis at first-level administrative subdivision level (department level) and the porcine population at risk. This zoonotic parasite is believed to be widely endemic across most of Latin America. However, there is little information readily available for Central America and the Caribbean basin...
September 18, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28892472/target-product-profiles-for-the-diagnosis-of-taenia-solium-taeniasis-neurocysticercosis-and-porcine-cysticercosis
#19
Meritxell Donadeu, Anna S Fahrion, Piero L Olliaro, Bernadette Abela-Ridder
Target Product Profiles (TPPs) are process tools providing product requirements to guide researchers, developers and manufacturers in their efforts to develop effective and useful products such as biologicals, drugs or diagnostics. During a WHO Stakeholders Meeting on Taenia solium diagnostics, several TPPs were initiated to address diagnostic needs for different stages in the parasite's transmission (taeniasis, human and porcine cysticercosis). Following the meeting, draft TPPs were completed and distributed for consultation to 100 people/organizations, including experts in parasitology, human and pig cysticercosis, diagnostic researchers and manufacturers, international organizations working with neglected or zoonotic diseases, Ministries of Health and Ministries of Livestock in some of the endemic countries, WHO regional offices and other interested parties...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28877581/historical-details-about-the-meat-consumption-and-taeniases-in-joseon-period-of-korea
#20
Dong Hoon Shin, Jong-Yil Chai, Jong Ha Hong, Min Seo
Previous paleoparasitological studies of Joseon specimens established that the prevalence of Taenia infection was not much different from that of the early 20th century Korean population. As many of taeniases originally diagnosed as Taenia saginata in South Korea were revealed to be actually Taenia asiatica, which share a common intermediate host with T. solium (the pig), Joseon people must have ingested raw pork frequently. However, the current examination of extant Joseon documents revealed that the population ate significant amounts of beef even if the beef ban was enforced; and pork was not consumed as much as we thought...
August 2017: Korean Journal of Parasitology
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