keyword
MENU ▼
Read by QxMD icon Read
search

Opisthorchis

keyword
https://www.readbyqxmd.com/read/28916307/extreme-conservation-of-mirna-complements-in-opisthorchiids
#1
Vladimir Y Ovchinnikov, Viatcheslav A Mordvinov, Bastian Fromm
MicroRNAs (miRNAs) are important gene regulators that are key players in animal development and diseases. They are excreted in extracellular vesicles and because they were shown to be taken up by host cells they have been proposed as mediators of parasite-host communication, and potential biomarkers for the detection of parasitic infections from host blood. Consequently, it is crucial to precisely know the miRNA complements of medically important agents such as the liver flukes of the Opisthorchiidae. Using publicly available and new datasets we curated and reannotated the surprisingly small and variable miRNA complements previously described for Opisthorchis viverrini, O...
September 12, 2017: Parasitology International
https://www.readbyqxmd.com/read/28910999/infection-with-opisthorchis-felineus-induces-intraepithelial-neoplasia-of-the-biliary-tract-in-a-rodent-model
#2
Maria João Gouveia, Maria Y Pakharukova, Thewarach Laha, Banchob Sripa, Galina A Maksimova, Gabriel Rinaldi, Paul J Brindley, Viatcheslav A Mordvinov, Teresina Amaro, Lucio Lara Santos, José Manuel Correia da Costa, Nuno Vale
The liver fluke Opisthorchis felineus is a member of the triad of epidemiologically relevant species of the trematode family Opisthorchiidae, and the causative agent of opisthorchiasis felinea over an extensive range that spans regions of Eurasia. The International Agency for Research on Cancer classifies the infection with the liver flukes Opisthorchis viverrini and Clonorchis sinensis as group 1 agents and a major risk factor for cholangiocarcinoma. However, the carcinogenic potential of the infection with O...
September 1, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28866984/transmission-of-opisthorchis-viverrini-schistosoma-mekongi-and-soil-transmitted-helminthes-on-the-mekong-islands-southern-lao-pdr
#3
Youthanavanh Vonghachack, Peter Odermatt, Keoka Taisayyavong, Souphanh Phounsavath, Kongsap Akkhavong, Somphou Sayasone
BACKGROUND: Prevalence of Opisthorchis viverrini, Schistosoma mekongi and soil-transmitted helminths (STH) remains high in Lao People's Democratic Republic (Lao PDR), despite control efforts including mass-drug administration, education and communication campaigns. New approaches are required to advance helminth control. METHODS: An ecohealth study was conducted on two Mekong islands in Southern Laos. Demographic and behavioural data were collected by questionnaire...
September 4, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28795594/the-battle-of-worldviews-a-case-study-of-liver-fluke-infection-in-khon-kaen-thailand
#4
Sara Samiphak, S Leonard Syme
Control efforts to reduce infection from the parasitic flatworm Opisthorchis viverrini have progressed through understanding the epidemiology of Opisthorchis viverrini, antiparasitic drug developments, technological innovations, health education promoting cooking of fish, and improved hygienic defecation. Yet the problem persists. The case study method was used to examine the fundamental cause of the liver fluke infection problem. Evidence shows that the liver fluke-infected population does not care about living a long life...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/28793922/comparison-of-novel-and-standard-diagnostic-tools-for-the-detection-of-schistosoma-mekongi-infection-in-lao-people-s-democratic-republic-and-cambodia
#5
Youthanavanh Vonghachack, Somphou Sayasone, Virak Khieu, Robert Bergquist, Govert J van Dam, Pytsje T Hoekstra, Paul L A M Corstjens, Beatrice Nickel, Hanspeter Marti, Jürg Utzinger, Sinuon Muth, Peter Odermatt
BACKGROUND: Given the restricted distribution of Schistosoma mekongi in one province in Lao People's Democratic Republic (Lao PDR) and two provinces in Cambodia, together with progress of the national control programmes aimed at reducing morbidity and infection prevalence, the elimination of schistosomiasis mekongi seems feasible. However, sensitive diagnostic tools will be required to determine whether elimination has been achieved. We compared several standard and novel diagnostic tools in S...
August 10, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28754415/prospects-and-challenges-towards-sustainable-liver-fluke-control
#6
REVIEW
Banchob Sripa, Pierre Echaubard
The liver fluke Opisthorchis viverrini (Ov) is endemic in Southeast Asia where more than 10 million people are estimated to be infected. The infection is associated with several hepatobiliary diseases, including cholangiocarcinoma (CCA). Northeast Thailand is a hotspot for Ov transmission, and, despite extensive public health prevention campaigns led by the government, the prevalence of Ov infection is still high. High infection rates result from cultural and ecological complexities where wet-rice agrarian habitats, centuries-old raw-food culture, and the parasite's complex biology combine to create an ideal transmission arena...
June 27, 2017: Trends in Parasitology
https://www.readbyqxmd.com/read/28729070/abc-transporters-in-the-liver-fluke-opisthorchis-felineus
#7
Viatcheslav A Mordvinov, Nikita I Ershov, Darya S Pirozhkova, Yuri V Pakharukov, Maria Y Pakharukova
ATP-binding cassette transporters (ABC transporters) are essential components of normal cellular physiological machinery in all eukaryotic and prokaryotic species, including parasites. Some ABC transporters, e.g., P-glycoproteins, are involved in the efflux of toxins and xenobiotics from the cell. At present, nothing is known about ABC transporter genes in epidemiologically important liver flukes from the Opisthorchiidae family, including European liver fluke Opisthorchis felineus. Opisthorchiasis caused by O...
July 17, 2017: Molecular and Biochemical Parasitology
https://www.readbyqxmd.com/read/28725936/ultrastructural-characters-of-the-spermatozoon-of-the-liver-fluke-opisthorchis-viverrini-poirier-1886-opisthorchiidae
#8
Jordi Miquel, Zdzisław Świderski, Banchob Sripa, Alexis Ribas
The present study records the ultrastructural organization of the mature spermatozoon of Opisthorchis viverrini by means of transmission electron microscopy. The spermatozoon of O. viverrini is a filiform cell, tapered at both extremities. It exhibits the characteristics of type IV spermatozoon of digeneans, namely with two axonemes of the 9+'1' trepaxonematan pattern, external ornamentation of the plasma membrane associated with cortical microtubules that are in the posterior part of the anterior region of the sperm cell, and with two mitochondria...
July 19, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28719954/subsets-of-inflammatory-cytokine-gene-polymorphisms-are-associated-with-risk-of-carcinogenic-liver-fluke-opisthorchis-viverrini-associated-advanced-periductal-fibrosis-and-cholangiocarcinoma
#9
Arpa Surapaitoon, Sutas Suttiprapa, Eimorn Mairiang, Narong Khuntikeo, Chawalit Pairojkul, Jeffrey Bethony, Paul J Brindley, Banchob Sripa
Opisthorchis viverrini infection induces chronic inflammation, and a minor proportion of infected individuals develop advanced periductal fibrosis (APF) and cholangiocarcinoma (CCA). Inflammatory cytokines and/or their gene polymorphisms may link to these biliary pathologies. We therefore investigated associations among cytokine gene polymorphisms and cytokine production in 510 Thai cases infected with O. viverrini who presented with APF+ or APF-, as established by abdominal ultrasonography as well as in patients diagnosed with CCA...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28708894/magnetic-resonance-imaging-and-spectroscopy-for-differential-assessment-of-liver-abnormalities-induced-by-opisthorchis-felineus-in-an-animal-model
#10
Alexandra G Pershina, Vladimir V Ivanov, Lina V Efimova, Oleg B Shevelev, Sergey V Vtorushin, Tatjana V Perevozchikova, Alexey E Sazonov, Ludmila M Ogorodova
BACKGROUND: European liver fluke Opisthorchis felineus, causing opisthorchiasis disease, is widespread in Russia, Ukraine, Kazakhstan and sporadically detected in the EU countries. O. felineus infection leads to hepatobiliary pathological changes, cholangitis, fibrosis and, in severe cases, malignant transformation of bile ducts. Due to absence of specific symptoms, the infection is frequently neglected for a long period. The association of opisthorchiasis with almost incurable bile duct cancer and rising international migration of people that increases the risk of the parasitic etiology of liver fibrosis in non-endemic regions determine high demand for development of approaches to opisthorchiasis detection...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28699535/protein-kinases-as-targets-for-opisthorchis-viverrini-associated-cholangiocarcinoma-therapy
#11
Watcharin Loilome, Hasaya Dokduang
Protein kinases are enzymes that catalyze the transfer of phosphate from ATP to the serine/threonine or tyrosine residues of target molecules. These are key important mediators in a signaling cascade involved in several biological processes. Dysregulation of their activity has been found in various tumors. From our increased understanding of kinase structure and activation mechanisms there emerged new strategies for targeting kinase in cancer treatment. Nowadays, kinase specific inhibitors are developed and widely used for clinical cancer treatment...
July 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28669159/simplified-techniques-for-killing-the-carcinogenic-opisthorchis-viverrini-metacercariae-in-cyprinid-fish
#12
Panupan Sripan, Thidarut Boonmars, Jiraporn Songsri, Ratchadawan Aukkanimart, Pranee Sriraj, Panaratana Rattanasuwan, Parichart Boueroy, Apiporn Suwannatrai, Surasit Aunpromma, Narong Khuntikeo, Watcharin Loilome, Nisana Namwat, Puangrat Yongvanit, Aung PhyoWai, Sukhonthip Khueangchaingkhwang, Wu Zhilang, Benjamabhorn Pumhirunroj, Atchara Artchayasawat, Sirintip Boonjaraspinyo
Consumption of fluke-free fish is the most important factor in controlling Opisthorchis viverrini (OV) infection in endemic areas such as northeast Thailand and thereby reducing the risk of cholangiocarcinoma. Cooking fish is the best way to avoid infection; however, the cultural practice of eating raw or fermented fish is difficult to change. We investigated the food preparation process, using freezing, heating and fermentation to kill OV metacercariae in fish. Uncooked cyprinid fish infected with OV were divided into three groups: refrigerated at 4 oC for 24, 48 or 72 h (control group); frozen at -20 oC for 24, 48 or 72 h; or heated by microwaving (at 400 or 800 W) or boiling at 90 oC for 1, 5 or 10 min...
June 25, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28583212/lineage-specific-expansion-and-loss-of-tyrosinase-genes-across-platyhelminths-and-their-induction-profiles-in-the-carcinogenic-oriental-liver-fluke-clonorchis-sinensis
#13
Seon-Hee Kim, Young-An Bae
Tyrosinase provides an essential activity during egg production in diverse platyhelminths by mediating sclerotization of eggshells. In this study, we investigated the genomic and evolutionary features of tyrosinases in parasitic platyhelminths whose genomic information is available. A pair of paralogous tyrosinases was detected in most trematodes, whereas they were lost in cyclophyllidean cestodes. A pseudophyllidean cestode displaying egg biology similar to that of trematodes possessed an orthologous gene...
June 6, 2017: Parasitology
https://www.readbyqxmd.com/read/28552889/present-situation-of-opisthorchiasis-in-vientiane-capital-lao-peoples-democratic-republic
#14
REVIEW
Satoshi Nakamura
Opisthorchiasis is the commonest liver disease caused by Opisthorchis viverrini in Thailand, Lao People's Democratic Republic (PDR) and Cambodia, which will be a major cause of future human cholangiocarcinoma in these regions. In this short review, we describe the epidemic aspects of this parasite infection and the outline of results of our recent surveys of the fluke in humans and its intermediate hosts in Vientiane Capital, where information on the opisthorchiasis epidemic is insufficient. We examined the stool from a total of 296 persons living in the Phailom village (population, 1545, 1999) from 2011 to 2012...
2017: Nihon Eiseigaku Zasshi. Japanese Journal of Hygiene
https://www.readbyqxmd.com/read/28527633/anthelmintic-activity-of-cytochrome-p450-inhibitors-miconazole-and-clotrimazole-in-vitro-effect-on-the-liver-fluke-opisthorchis-felineus
#15
Viatcheslav A Mordvinov, Alexander G Shilov, Maria Y Pakharukova
Discovery of drugs for the treatment of opisthorchiasis and schistosomiasis is a high priority. The basic metabolic cytochrome P450 (CYP) system in parasitic flatworms contains a single gene. CYP of the liver fluke Opisthorchis felineus, the causative agent of opisthorchiasis, is important for survival of the worm, so it may be a promising target for therapeutics against liver fluke infection. The aims of this study were: (i) to analyse in-vitro anthelmintic activity of various CYP inhibitors using standard motility and mortality assays against juvenile and adult O...
May 17, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28506040/codon-usage-patterns-of-tyrosinase-genes-in-clonorchis-sinensis
#16
Young-An Bae
Codon usage bias (CUB) is a unique property of genomes and has contributed to the better understanding of the molecular features and the evolution processes of particular gene. In this study, genetic indices associated with CUB, including relative synonymous codon usage and effective numbers of codons, as well as the nucleotide composition, were investigated in the Clonorchis sinensis tyrosinase genes and their platyhelminth orthologs, which play an important role in the eggshell formation. The relative synonymous codon usage patterns substantially differed among tyrosinase genes examined...
April 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28472153/first-report-and-molecular-identification-of-opisthorchis-viverrini-infection-in-human-communities-from-lower-myanmar
#17
Win Pa Pa Aung, Thi Thi Htoon, Htay Htay Tin, Kyi Kyi Thinn, Oranuch Sanpool, Jurairat Jongthawin, Lakkhana Sadaow, Issarapong Phosuk, Rutchanee Rodpai, Pewpan M Intapan, Wanchai Maleewong
Opisthorchis viverrini is endemic in the South East Asian region, especially in Cambodia, Lao People's Democratic Republic, Vietnam and Thailand, but there have been no previous records from Myanmar. During stool surveys of rural populations in three regions of Lower Myanmar, Opisthorchis-like eggs were found in 34 out of 364 (9.3%) participants by stool microscopy after using the modified formalin-ether concentration technique. DNA was extracted from these positive stool samples and a portion of the mitochondrial cytochrome c oxidase subunit I (cox1) gene was amplified using the polymerase chain reaction and then sequenced...
2017: PloS One
https://www.readbyqxmd.com/read/28429227/secretion-of-thioredoxin-peroxidase-protein-of-cat-liver-fluke-opisthorchis-felineus-during-modeling-of-experimental-opisthorchiasis
#18
V A Petrenko, M Yu Pakharukova, A V Kovner, M N L'vova, V V Lyakhovich, V A Mordvinov
Mechanisms of thioredoxin peroxidase secretion by Opisthorchis felineus were studied in vivo and in vitro. Specific antibodies were obtained and used for western blotting and immunohistochemical detection in Syrian hamster model of opisthorchiasis. Secreted thioredoxin peroxidase protein was accumulated in the worm incubation medium under conditions of oxidative stress and in bile duct cells of hamsters with chronic opisthorchiasis.
April 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28426425/the-role-of-domestic-dogs-in-the-transmission-of-zoonotic-helminthes-in-a-rural-area-of-mekong-river-basin
#19
Marcello Otake Sato, Megumi Sato, Tippayarat Yoonuan, Tiengkham Pongvongsa, Surapol Sanguankiat, Sengchanh Kounnavong, Wanna Maipanich, Yuichi Chigusa, Kazuhiko Moji, Jitra Waikagul
Dogs have been bred since ancient times for companionship, hunting, protection, shepherding and other human activities. Some canine helminth parasites can cause significant clinical diseases in humans as Opisthorchis viverrini causing cholangiocarcinoma in Southeast Asian Countries. In this study, socio-cultural questionnaire, canine parasitological analysis, necropsy, parasite molecular confirmation and dog roaming data were evaluated in Savannakhet, Lao-PDR, a typical Mekong Basin area. Dog owners comprised 48...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28425707/development-of-a-potent-wound-healing-agent-based-on-the-liver-fluke-granulin-structural-fold
#20
Paramjit S Bansal, Michael J Smout, David Wilson, Claudia Cobos Caceres, Mohadeseh Dastpeyman, Javier Sotillo, Julia Seifert, Paul J Brindley, Alex Loukas, Norelle L Daly
Granulins are a family of protein growth factors that are involved in cell proliferation. An orthologue of granulin from the human parasitic liver fluke Opisthorchis viverrini, known as Ov-GRN-1, induces angiogenesis and accelerates wound repair. Recombinant Ov-GRN-1 production is complex and poses an obstacle for clinical development. To identify the bioactive region(s) of Ov-GRN-1, four truncated N-terminal analogues were synthesized and characterized structurally using NMR spectroscopy. Peptides that contained only two native disulfide bonds lack the characteristic granulin β-hairpin structure...
May 25, 2017: Journal of Medicinal Chemistry
keyword
keyword
96928
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"