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Opisthorchis

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https://www.readbyqxmd.com/read/28043382/protozoan-and-helminth-parasite-fauna-of-free-living-croatian-wild-wolves-canis-lupus-analyzed-by-scat-collection
#1
Carlos Hermosilla, Sonja Kleinertz, Liliana M R Silva, Jörg Hirzmann, Djuro Huber, Josip Kusak, Anja Taubert
The European wolf (Canis lupus) is a large carnivore species present in limited areas of Europe with several small populations still being considered as endangered. Wolves can be infected by a wide range of protozoan and metazoan parasites with some of them affecting free-living wolf health condition. On this account, an epidemiological survey was conducted to analyze the actual parasite fauna in Croatian wild wolves. In total, 400 individual faecal samples were collected during field studies on wolf ecology in the years 2002-2011...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28032359/opisthorchis-felineus-negatively-associates-with-skin-test-reactivity-in-russia-europrevall-inco-study
#2
Olga S Fedorova, Jacqueline J Janse, Ludmila M Ogorodova, Marina M Fedotova, Rogier A Achterberg, Jaco J Verweij, Montserrat Fernández-Rivas, Serge A Versteeg, James Potts, Cosetta Minelli, Ronald van Ree, Peter Burney, Maria Yazdanbakhsh
BACKGROUND: Most studies on the relationship between helminth infections and atopic disorders have been conducted in (sub)tropical developing countries where exposure to multiple parasites and lifestyle can confound the relationship. We aimed to study the relationship between infection with the fish-borne helminth Opishorchis felineus and specific IgE, skin prick testing and atopic symptoms in Western-Siberia, with lifestyle and hygiene standards of a developed country. METHODS: Schoolchildren aged 7 to 11 years were sampled from one urban and two rural regions...
December 29, 2016: Allergy
https://www.readbyqxmd.com/read/28030606/body-condition-peaks-at-intermediate-parasite-loads-in-the-common-bully-gobiomorphus-cotidianus
#3
Alberto Maceda-Veiga, Andy J Green, Robert Poulin, Clément Lagrue
Most ecologists and conservationists perceive parasitic infections as deleterious for the hosts. Their effects, however, depend on many factors including host body condition, parasite load and the life cycle of the parasite. More research into how multiple parasite taxa affect host body condition is required and will help us to better understand host-parasite coevolution. We used body condition indices, based on mass-length relationships, to test the effects that abundances and biomasses of six parasite taxa (five trematodes, Apatemon sp...
2016: PloS One
https://www.readbyqxmd.com/read/27989833/identification-and-characterization-of-protein-14-3-3-in-carcinogenic-liver-fluke-opisthorchis-viverrini
#4
Alok Kafle, Pranom Puchadapirom, Sirikanya Plumworasawat, Rieofarng Dontumprai, Waraporn Chan-On, Sureemas Buates, Thewarach Laha, Banchob Sripa, Sutas Suttiprapa
Protein 14-3-3s are abundant phospho-serine/threonine binding proteins, which are highly conserved among eukaryotes. Members of this protein family mediate metabolism and signal transduction networks through binding to hundreds of other protein partners. Protein 14-3-3s have been studied in other species of parasitic helminthes, but little is known about this protein in the carcinogenic liver fluke Opisthorchis viverrini. In this study, we identified and characterized protein 14-3-3s of O. viverrini. Seven protein 14-3-3 encoded sequences were retrieved from the O...
October 27, 2016: Parasitology International
https://www.readbyqxmd.com/read/27965165/suspected-cases-of-cholangiocarcinoma-seen-in-reference-hospitals-in-lao-people-s-democratic-republic
#5
Phonepasong Ayé Soukhathammavong, Youthanavanh Vonghachack, Christoph Hatz, Kongsap Akkhavong, Peter Odermatt
Cholangiocarcinoma (CCA) poses a significant public health problem in Southeast Asia, with chronic Opisthorchis viverrini infection being the main risk factor. Epidemiological data on CCA is not available for Lao People Democratic Republic (Lao PDR), though there is a high prevalence of O. viverrini infection in the country. A hospital record-based retrospective study was carried out in six referral hospitals (four in the capital city, one in Savannakhet, one in Pakse) to assess the number of suspected CCA cases admitted between January 2006 and December 2010...
December 11, 2016: Parasitology International
https://www.readbyqxmd.com/read/27956092/ultrasonographic-features-of-hepatobiliary-in-opisthorchiasis
#6
Eimorn Mairiang
Infection with the liver fluke, Opisthorchis viverrini (OV), is an important public health problem in northeast Thailand where people have a habit of eating raw or inadequately cooked fish. Opisthorchiasis Is associated with a number of asymptomatic hepatobiliary abnormalities and cholangiocarcinoma (CCA) that can be observed conveniently by ultrasonography. The ultrasonographicclassification of hepatobiliary pathology opisthorchiasis will be presented.
December 9, 2016: Parasitology International
https://www.readbyqxmd.com/read/27955744/glycoproteomics-analysis-of-plasma-proteins-associated-with-opisthorchis-viverrini-infection-induced-cholangiocarcinoma-in-hamster-model
#7
Pramote Sriwanitchrak, Atchara Paemanee, Sittiruk Roytrakul, Vithoon Viyanant, Kesara Na-Bangchang
OBJECTIVE: To apply lectin affinity chromatography and glycoproteomics-based LC-MS/MS to preliminarily investigate the possible potential plasma biomarkers of Opisthorchis viverrini (OV)-associated CCA in OV/dimethylnitrosamine (DMN)-induced CCA hamster model. METHODS: Nine Syrian hamsters were divided into 3 groups as follows (n = 3 each): normal (healthy control group); OV group; and OV/DMN group (CCA group). Pooled plasma samples collected from animals in each group at the 6th month post-infection with OV metacercarae were subjected to glycoproteomics analysis...
December 2016: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/27939972/opisthorchiasis-in-western-siberia-epidemiology-and-distribution-in-human-fish-snail-and-animal-populations
#8
Natalia I Yurlova, Elena N Yadrenkina, Natalia M Rastyazhenko, Elena А Serbina, Viktor V Glupov
Opisthorchiasis is a widespread helminth infection in Russia. The largest opisthorchiasis endemic focus in the world is the Ob river watershed in Western Siberia. The main causative agent of this condition is the liver fluke, Opisthorchis felineus. In addition, another liver fluke species in the Opisthorchiidae family, Metorchis bilis, causes a symptomatically similar disease, metorchiasis. Despite a long research history going back to 1927, opisthorchiasis remains a serious problem in Russia, and numerous questions related to the epidemiology of these liver fluke infections and their patterns of distribution in Western Siberia, the causes of high prevalence in different populations, and the prognosis of the epidemiological situation remain to be answered...
December 8, 2016: Parasitology International
https://www.readbyqxmd.com/read/27927864/efficacy-and-safety-of-praziquantel-against-light-infections-of-opisthorchis-viverrini-a-randomised-parallel-single-blind-dose-ranging-trial
#9
Somphou Sayasone, Isabel Meister, Jason R Andrews, Peter Odermatt, Youthanavanh Vonghachack, Syda Xayavong, Kanpaseuth Senggnam, Khampheng Phongluxa, Jan Hattendorf, Isaac I Bogoch, Jennifer Keiser
BACKGROUND: The liver fluke Opisthorchis viverrini, highly prevalent in Southeast Asia, is an important public health burden, including a risk factor for developing an aggressive bile duct cancer, cholangiocarcinoma, in chronically infected patients. Praziquantel, administered at single 40 mg/kg in preventive chemotherapy programs and 3 x 25 mg/kg for individual treatment is the drug of choice, yet information on the nature of the dose-response relationship is lacking. METHODS: We performed a randomized, parallel, single blind dose-ranging Phase 2 trial in Lao PDR in O...
December 7, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/27926938/uncovering-the-pathogenic-landscape-of-helminth-opisthorchis-viverrini-infections-a-cross-sectional-study-on-contributions-of-physical-and-social-environment-and-healthcare-interventions
#10
Xueyuan Ong, Yi-Chen Wang, Paiboon Sithithaworn, Jutamas Namsanor, David Taylor, Luxana Laithavewat
BACKGROUND: Helminth infections have proven recalcitrant to control by chemotherapy in many parts of Southeast Asia and indeed farther afield. This study isolates and examines the influence of different aspects of the physical and social environment, and uneven intervention effort contributing to the pathogenic landscape of human Opisthorchis viverrini infections. METHODOLOGY: A cross-sectional survey, involving 632 participants, was conducted in four villages in northeast Thailand to examine the impact on prevalence and parasite burden of the reservoir dam environment, socio-economic, demographic, and behavioral factors, and health center intervention efforts...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27919744/co-infections-with-liver-fluke-and-helicobacter-species-a-paradigm-change-in-pathogenesis-of-opisthorchiasis-and-cholangiocarcinoma
#11
REVIEW
Banchob Sripa, Raksawan Deenonpoe, Paul J Brindley
Infection with the fish-borne liver fluke Opisthorchis viverrini is classified by the International Agency for Research on Cancer as a Group 1 carcinogen: definitely carcinogenic in humans. Cofactors likely contribute to bile duct cancer (cholangiocarcinoma) caused by this infection. Here we review recent findings that address the role of liver fluke associated H. pylori in hepatobiliary disease and malignancy. We hypothesize that co-infection by O. viverrini and the bacillus Helicobacter pylori is central of liver fluke infection associated cholangiocarcinoma...
December 3, 2016: Parasitology International
https://www.readbyqxmd.com/read/27914324/development-and-validation-of-species-specific-molecular-diagnostic-tool-for-opisthorchis-felineus-digenea-opisthorchiidae-metacercariae
#12
Monica Caffara, Laura Serracca, Andrea Gustinelli, Walter Vencia, Irene Rossini, Marino Prearo, Maria L Fioravanti
Opisthorchis felineus (family Opisthorchiidae) is a parasitic flatworm representing a serious threat to humans in some countries. Opisthorchiasis occurs after consumption of raw or undercooked cyprinid fish infected by the metacercarial stage of the parasite. Due to its small size, detection of the parasite in fish fillet is time-consuming and difficult. Furthermore, isolated metacercariae can be identified to genus but not to species level using morphological features and molecular techniques are necessary...
February 2, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/27893749/differential-protein-expression-in-the-hemolymph-of-bithynia-siamensis-goniomphalos-infected-with-opisthorchis-viverrini
#13
Kulwadee Suwannatrai, Apiporn Suwannatrai, Pairat Tabsripair, Jariya Umka Welbat, Sirikachorn Tangkawattana, Cinzia Cantacessi, Jason Mulvenna, Smarn Tesana, Alex Loukas, Javier Sotillo
Bithynia siamensis goniomphalos is a freshwater snail that serves as the first intermediate host of the human liver fluke Opisthorchis viverrini. This parasite is a major public health problem in different countries throughout the Greater Mekong sub-region (Thailand, southern Vietnam, Lao PDR and Cambodia). Chronic O. viverrini infection also results in a gradual increase of fibrotic tissues in the biliary tract that are associated with hepatobiliary diseases and contribute to cholangiocarcinoma (a fatal type of bile duct cancer)...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27890720/the-lawa-model-a-sustainable-integrated-opisthorchiasis-control-program-using-the-ecohealth-approach-in-the-lawa-lake-region-of-thailand
#14
Banchob Sripa, Sirikachorn Tangkawattana, Thinnakorn Sangnikul
Opisthorchiasis caused by the carcinogenic liver fluke Opisthorchis viverrini is a major foodborne parasitic zoonotic disease in Thailand and neighboring Mekong countries. The infection is associated with several hepatobiliary diseases including cholangiocarcinoma (CCA). The rates of CCA in regions where the parasite is endemic are unprecedented. Extensive research on various aspects of opisthorchiasis has been conducted in recent decades. However, the current status of O. viverrini infection in the country is approaching 85% prevalence in certain endemic areas even after more than 30years of control programs in Thailand...
November 24, 2016: Parasitology International
https://www.readbyqxmd.com/read/27882434/new-locality-record-for-haplorchoides-mehrai-and-possible-interactions-with-opisthorchis-viverrini-metacercariae-in-cyprinid-fishes-in-northeast-thailand
#15
Yupin Manpratum, Wanlop Kaewkes, Pierre Echaubard, Banchob Sripa, Sasithorn Kaewkes
Metacercariae of Opisthorchis viverrini, a carcinogenic liver fluke, and Haplorchoides sp., a trematode maturing in catfish, are commonly found in cyprinid fish, the second intermediate hosts of both flukes. However, the specific identity of Haplorchoides sp. in Thailand and a precise assessment of the effects of co-infections with O. viverrini have never been clarified. Therefore, we aimed to identify the species of Haplorchoides and to investigate possible interactions of the two trematode species in cyprinid fishes...
November 23, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27880787/seasonal-and-spatial-environmental-influence-on-opisthorchis-viverrini-intermediate-hosts-abundance-and-distribution-insights-on-transmission-dynamics-and-sustainable-control
#16
Christina Sunyoung Kim, Pierre Echaubard, Apiporn Suwannatrai, Sasithorn Kaewkes, Bruce A Wilcox, Banchob Sripa
BACKGROUND: Opisthorchis viverrini (Ov) is a complex-life-cycle trematode affecting 10 million people in SEA (Southeast Asia). Human infection occurs when infected cyprinid fish are consumed raw or undercooked. Ov requires three hosts and presents two free-living parasitic stages. As a consequence Ov transmission and infection in intermediate and human hosts are strongly mediated by environmental factors and understanding how environmental variability influences intermediate host abundance is critical...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27835838/developmental-stages-of-fish-blood-flukes-cardicola-forsteri-and-cardicola-opisthorchis-trematoda-aporocotylidae-in-their-polychaete-intermediate-hosts-collected-at-pacific-bluefin-tuna-culture-sites-in-japan
#17
Kazuo Ogawa, Sho Shirakashi, Kazuki Tani, Sang Phil Shin, Katsuya Ishimaru, Tomoki Honryo, Yukitaka Sugihara, Hiro'omi Uchida
Farming of Pacific bluefin tuna (PBT), Thunnus orientalis, is a rapidly growing industry in Japan. Aporocotylid blood flukes of the genus Cardicola comprising C. orientalis, C. opisthorchis and C. forsteri are parasites of economic importance for PBT farming. Recently, terebellid polychaetes have been identified as the intermediate hosts for all these parasites. We collected infected polychaetes, Terebella sp., the intermediate host of C. opisthorchis, from ropes and floats attached to tuna cages in Tsushima, Nagasaki Prefecture, Japan...
February 2017: Parasitology International
https://www.readbyqxmd.com/read/27821695/development-of-a-pcr-assay-for-diagnosing-trematode-opisthorchis-and-haplorchis-infections-in-human-stools
#18
Pheophet Lamaningao, Seiji Kanda, Sakhone Laimanivong, Takaki Shimono, Andrew Waleluma Darcy, Amphay Phyaluanglath, Nobuyuki Mishima, Toshimasa Nishiyama
We developed a combined conventional polymerase chain reaction (PCR) and real-time PCR (qPCR)-based assay for detecting and discriminating between Opisthorchis viverrini and Haplorchis taichui parasite infections. The first PCR amplifies the mitochondrial cytochrome c oxidase subunit I (COI) genes of parasites, and differential diagnosis is achieved by performing qPCR with specific primers and SYBR Green I. The detection limit of the assay was found to be 2.0 × 10(2) plasmid copies in a test in which a stool sample was spiked with a single egg, which is equivalent to 5 eggs per gram (EPG)...
November 7, 2016: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/27806126/chronic-opisthorchis-viverrini-infection-changes-the-liver-microbiome-and-promotes-helicobacter-growth
#19
Upsornsawan Itthitaetrakool, Porntip Pinlaor, Somchai Pinlaor, Chariya Chomvarin, Rungtiwa Dangtakot, Apisit Chaidee, Chotechana Wilailuckana, Arunnee Sangka, Aroonlug Lulitanond, Puangrat Yongvanit
Adults of Opisthorchis viverrini reside in the biliary system, inducing inflammation of bile ducts and cholangitis, leading to hepatobiliary disease (HBD) including cholangiocarcinoma. O. viverrini infection also has major implications for the bacterial community in bile ducts and liver. To investigate this in chronic O. viverrini infection (≥ 8 months p.i.), bacterial genomic DNA from livers of hamsters and from worms was investigated using culture techniques, PCR for Helicobacter spp. and high-throughput next-generation sequencing targeting the V3-V4 hypervariable regions of prokaryotic 16S rRNA gene...
2016: PloS One
https://www.readbyqxmd.com/read/27794488/changing-patterns-of-prevalence-in-opisthorchis-viverrini-sensu-lato-infection-in-children-and-adolescents-in-northeast-thailand
#20
Narong Khuntikeo, Paiboon Sithithaworn, Watcharin Loilom, Nisana Namwat, Puangrat Yongvanit, Bandit Thinkhamrop, Nadda Kiatsopit, Ross H Andrews, Trevor N Petney
Infection with the liver fluke Opisthorchis viverrini sensu lato (s.l.), a group 1 carcinogen, is the most important risk factor for developing cholangiocarcinoma (CCA) in Southeast Asia. Cholangiocarcinoma is a fatal disease with the world's highest incidence being found in northeast Thailand. Liver fluke infection occurs through eating raw or partially cooked cyprinid fish containing metacercariae and, therefore, the control of O. viverrini s.l. infection should lead to a reduction in CCA incidence. In this report, we review and analyze the age-prevalence profile data of O...
December 2016: Acta Tropica
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