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https://www.readbyqxmd.com/read/29143663/dirofilaria-immitis-jyd-34-isolate-whole-genome-analysis
#1
Catherine Bourguinat, Francois Lefebvre, Johanna Sandoval, Brenda Bondesen, Yovany Moreno, Roger K Prichard
BACKGROUND: Macrocyclic lactone (ML) anthelmintics are used for chemoprophylaxis for heartworm infection in dogs and cats. Cases of dogs becoming infected with heartworms, despite apparent compliance to recommended chemoprophylaxis with approved preventives, has led to such cases being considered as suspected lack of efficacy (LOE). Recently, microfilariae collected from a small number of LOE isolates were used as a source of infection of new host dogs and confirmed to have reduced susceptibility to ML in controlled efficacy studies using L3 challenge in dogs...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29143232/assessment-of-gastrointestinal-nematode-infection-anthelmintic-usage-and-husbandry-practices-on-two-small-scale-goat-farms-in-malaysia
#2
Flora Wong, Neil Sargison
Haemonchosis is a common problem on goat farms in tropical countries such as Malaysia. Prevention of production losses generally depends on the use of anthelmintic drugs, but is threatened by the emergence of anthelmintic resistance. This study investigates anthelmintic efficacy on small-scale Malaysian goat farms and describes putative risk factors. Adult goats had moderate to high pre-treatment faecal trichostrongyle egg counts, despite being housed on slatted floors and fed on cut-and-carry forage, raising questions about the source of nematode infection...
November 15, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/29142433/prosopis-juliflora-pods-alkaloid-rich-fraction-in-vitro-anthelmintic-activity-on-goat-gastrointestinal-parasites-and-its-cytotoxicity-on-vero-cells
#3
Helimar Gonçalves Lima, Danilo Cavalcante Gomes, Nathália Silva Santos, Êuder Reis Dias, Mariana Borges Botura, Maria José Moreira Batatinha, Alexsandro Branco
Background: This study was designed to assess the in vitro anthelmintic activity of the fraction containing alkaloid from Prosopis juliflora pods on goat gastrointestinal nematodes using the egg hatch assay (EHA), larval migration inhibition assay (LMIA), and larval motility assay (LMA). Materials and Methods: The alkaloid-rich fraction (AF) - content juliprosopine as major alkaloid - was obtained from ethyl acetate extract after fractionation in Sephadex LH-20 chromatography column and its characterization were made by nuclear magnetic resonance analysis together with literature data comparison...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29139145/pharmacokinetic-assessment-of-the-monepantel-plus-oxfendazole-combined-administration-in-dairy-cows
#4
M Ballent, P Viviani, F Imperiale, P Dominguez, S Halwachs, H Mahnke, W Honscha, C Lanusse, G Virkel, A Lifschitz
Monepantel (MNP) is a novel anthelmintic compound launched into the veterinary pharmaceutical market. MNP is not licenced for use in dairy animals due to the prolonged elimination of its metabolite monepantel sulphone (MNPSO2 ) into milk. The goal of this study was to evaluate the presence of potential in vivo drug-drug interactions affecting the pattern of milk excretion after the coadministration of the anthelmintics MNP and oxfendazole (OFZ) to lactating dairy cows. The concentrations of both parent drugs and their metabolites were measured in plasma and milk samples by HPLC...
November 15, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/29137938/discovery-of-imidazo-1-2-a-pyridine-based-anthelmintic-targeting-cholinergic-receptors-of-haemonchus-contortus
#5
Jean-Paul Déto Ursul N'Guessan, Pierre-Olivier Delaye, Mélanie Pénichon, Claude L Charvet, Cédric Neveu, Mahama Ouattara, Cécile Enguehard-Gueiffier, Alain Gueiffier, Hassan Allouchi
We report the synthesis of a series of imidazo[1,2-a]pyridine-based molecules as anthelmintic against the livestock parasite Haemonchus contortus. The molecules were tested by using Larval Paralysis Test (LPT), in order to target ionic channels, as most of the prominent marketed anthelminthics present such mechanism of action. The most active compound (5e) displayed paralysis on H. contortus stage 3 larvae until 31.25 µM. Effect of 5e on H. contortus cholinergic receptors (L-AChR1 and 2) was characterized via electrophysiological measurement and a rare antagonist mode of action was unveiled...
November 6, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29128225/a-longitudinal-study-of-gastrointestinal-parasites-in-english-dairy-farms-practices-and-factors-associated-with-first-lactation-heifer-exposure-to-ostertagia-ostertagi-on-pasture
#6
C Bellet, M J Green, A J Bradley, J Kaler
The gastrointestinal nematode Ostertagia ostertagi is an important cause of lost production, health, and welfare in cattle. Detailed records were obtained over a 5-yr period (2010-2015) by questionnaires and qualitative interviews to investigate the practices adopted by dairy farmers to control cattle helminth infections and the factors associated with heifer exposure to O. ostertagi on pasture. In total, 1,454 heifers' individual milk samples were collected over a 1-yr period (2014-2015) in 43 dairy farms in England and tested for O...
November 8, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29124904/mind-the-gaps-in-research-on-the-control-of-gastrointestinal-nematodes-of-farmed-ruminants-and-pigs
#7
J Charlier, S M Thamsborg, D J Bartley, P J Skuce, F Kenyon, T Geurden, H Hoste, A R Williams, S Sotiraki, J Höglund, C Chartier, P Geldhof, J van Dijk, L Rinaldi, E R Morgan, G von Samson-Himmelstjerna, J Vercruysse, E Claerebout
Gastrointestinal (GI) nematode control has an important role to play in increasing livestock production from a limited natural resource base and to improve animal health and welfare. In this synthetic review, we identify key research priorities for GI nematode control in farmed ruminants and pigs, to support the development of roadmaps and strategic research agendas by governments, industry and policymakers. These priorities were derived from the DISCONTOOLS gap analysis for nematodes and follow-up discussions within the recently formed Livestock Helminth Research Alliance (LiHRA)...
November 10, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/29122715/nematicidal-activity-of-a-water-soluble-lectin-from-seeds-of-moringa-oleifera
#8
Mário Luan Silva de Medeiros, Maiara Celine de Moura, Thiago Henrique Napoleão, Patrícia Maria Guedes Paiva, Luana Cassandra Breitenbach Barroso Coelho, Ana Carla Diógenes Suassuna Bezerra, Michele Dalvina Correia da Silva
Gastrointestinal nematodes are the major cause of animal diseases, and the indiscriminate use of synthetic anthelmintic contributes to the development of drug resistance. Natural bioproducts are noteworthy since they have proved to be promising for alternative antiparasitic therapies. This study evaluated the in vitro effect of WSMoL (water soluble Moringa oleifera lectin) on hatching of eggs and on the development of early-stage larvae of gastrointestinal nematodes from naturally infected goats. In addition, the interference of WSMoL on activity of proteases was determined and the affinity of the lectin for glycosylated molecules of these parasites was investigated using fluorescein isothiocyanate (FITC)-labeled WSMoL...
November 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29121986/farm-level-risk-factors-for-fasciola-hepatica-infection-in-danish-dairy-cattle-as-evaluated-by-two-diagnostic-methods
#9
Nao Takeuchi-Storm, Matthew Denwood, Tina Vicky Alstrup Hansen, Tariq Halasa, Erik Rattenborg, Jaap Boes, Heidi Larsen Enemark, Stig Milan Thamsborg
BACKGROUND: The prevalence of bovine fasciolosis in Denmark is increasing but appropriate guidelines for control are currently lacking. In order to help develop a control strategy for liver fluke, a risk factor study of farm management factors was conducted and the utility of bulk tank milk (BTM ELISA) as a tool for diagnosis in Danish dairy cattle farms was assessed. METHODS: This case-control study aimed to identify farm-level risk factors for fasciolosis in Danish dairy farms (> 50 animals slaughtered in 2013) using two diagnostic methods: recordings of liver condemnation at slaughter, and farm-level Fasciola hepatica antibody levels in BTM...
November 9, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/29121562/p-glycoproteins-play-a-role-in-ivermectin-resistance-in-cyathostomins
#10
L E Peachey, G L Pinchbeck, J B Matthews, F A Burden, A Lespine, G von Samson-Himmelstjerna, J Krücken, J E Hodgkinson
Anthelmintic resistance is a global problem that threatens sustainable control of the equine gastrointestinal cyathostomins (Phylum Nematoda; Superfamily Strongyloidea). Of the three novel anthelmintic classes that have reached the veterinary market in the last decade, none are currently licenced in horses, hence current control regimens focus on prolonging the useful lifespan of licenced anthelmintics. This approach would be facilitated by knowledge of the resistance mechanisms to the most widely used anthelmintics, the macrocyclic lactones (ML)...
October 25, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/29114486/morphological-and-histological-analysis-of-cotylophoron-cotylophorum-treated-with-acacia-concinna
#11
P Priya, L Veerakumari
Objective: Paramphistomosis (stomach fluke disease) is a parasitic infection caused by digenetic trematodes and is considered to be one of the most important parasitic diseases affecting livestock worldwide. This disease is widely prevalent in India, and the highest incidence is reported during monsoon and post-monsoon months. In the present study, in vitro effect of aqueous extract of pods of Acacia concinna (AcP E) on the morphology and the histology of the digenetic trematode Cotylophoron cotylophorum have been investigated...
July 2017: Tropical Parasitology
https://www.readbyqxmd.com/read/29109684/antimicrobial-anthelmintic-and-antiviral-activity-of-plants-traditionally-used-for-treating-infectious-disease-in-the-similipal-biosphere-reserve-odisha-india
#12
Sujogya K Panda, Laxmipriya Padhi, Pieter Leyssen, Maoxuan Liu, Johan Neyts, Walter Luyten
In the present study, we tested in vitro different parts of 35 plants used by tribals of the Similipal Biosphere Reserve (SBR, Mayurbhanj district, India) for the management of infections. From each plant, three extracts were prepared with different solvents (water, ethanol, and acetone) and tested for antimicrobial (E. coli, S. aureus, C. albicans); anthelmintic (C. elegans); and antiviral (enterovirus 71) bioactivity. In total, 35 plant species belonging to 21 families were recorded from tribes of the SBR and periphery...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29107018/flubendazole-induces-mitotic-catastrophe-and-apoptosis-in-melanoma-cells
#13
K Čáňová, L Rozkydalová, D Vokurková, E Rudolf
Flubendazole (FLU) is a widely used anthelmintic drug belonging to benzimidazole group. Recently, several studies have been published demonstrating its potential to inhibit growth of various tumor cells including those derived from colorectal cancer, breast cancer or leukemia via several mechanisms. In the present study we have investigated cytotoxic effects of FLU on malignant melanoma using A-375, BOWES and RPMI-7951 cell lines representing diverse melanoma molecular types. In all three cell lines, FLU inhibited cell growth and proliferation and disrupted microtubule structure and function which was accompanied by dramatic changes in cellular morphology...
October 26, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/29100544/effects-of-selected-palestinian-plants-on-the-in-vitro-exsheathment-of-the-third-stage-larvae-of-gastrointestinal-nematodes
#14
Rana Majed Jamous, Mohammed Saleem Ali-Shtayeh, Salam Yousef Abu-Zaitoun, Alex Markovics, Hassan Azaizeh
BACKGROUND: Gastrointestinal parasites are one of the main restrictions to small ruminant production. Their pathological importance is primarily related to the major production losses, in quantity or quality, induced by the direct action of worms. Control of these parasites is based exclusively on the frequent use of anthelmintic drugs. However, the resistance to anthelmintics in worm populations after commercialisation of chemical drugs is now widespread. Therefore, there is a need to find new natural resources to ensure sustainable and effective treatment and control of these parasites...
November 3, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/29099835/rna-seq-de-novo-assembly-and-differential-transcriptome-analysis-of-the-nematode-ascaridia-galli-in-relation-to-in-vivo-exposure-to-flubendazole
#15
Mihaela M Martis, Behdad Tarbiat, Eva Tydén, Désirée S Jansson, Johan Höglund
The nematode Ascaridia galli (order Ascaridida) is an economically important intestinal parasite responsible for increased food consumption, reduced performance and elevated mortality in commercial poultry production. This roundworm is an emerging problem in several European countries on farms with laying hens, as a consequence of the recent European Union (EU) ban on conventional battery cages. As infection is associated with slow development of low levels of acquired protective immunity, parasite control relies on repeated use of dewormers (anthelmintics)...
2017: PloS One
https://www.readbyqxmd.com/read/29099259/suspected-adverse-reactions-to-oral-administration-of-a-praziquantel-pyrantel-combination-in-captive-cheetahs-acinonyx-jubatus
#16
Katherine M Whitehouse-Tedd, Liesl Smith, Jane A Budd, Christopher G Lloyd
OBJECTIVE To characterize adverse reactions to oral administration of a combination of praziquantel and pyrantel embonate or pyrantel pamoate, with or without oxantel embonate, in captive cheetahs (Acinonyx jubatus). DESIGN Retrospective case series and case-control study. ANIMALS 16 captive cheetahs with signs of adverse reaction to oral administration of praziquantel and pyrantel, with or without oxantel embonate (affected group), and 27 cheetahs without such reactions (unaffected group), all from 3 independent facilities...
November 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29099089/peroxides-with-anthelmintic-antiprotozoal-fungicidal-and-antiviral-bioactivity-properties-synthesis-and-reactions
#17
REVIEW
Vera A Vil', Ivan A Yaremenko, Alexey I Ilovaisky, Alexander O Terent'ev
The biological activity of organic peroxides is usually associated with the antimalarial properties of artemisinin and its derivatives. However, the analysis of published data indicates that organic peroxides exhibit a variety of biological activity, which is still being given insufficient attention. In the present review, we deal with natural, semi-synthetic and synthetic peroxides exhibiting anthelmintic, antiprotozoal, fungicidal, antiviral and other activities that have not been described in detail earlier...
November 2, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29095112/assessment-of-elimination-profile-of-albendazole-residues-in-fish
#18
Zenaís Busatto, Welliton Gonçalves de França, José Eurico Possebon Cyrino, Jonas Augusto Rizzato Paschoal
Few drugs are specifically regulated for aquaculture. Thus this study considered albendazole (ABZ) as a potential drug for use in fish, which, however, is not yet regulated for this application. ABZ is a broad-spectrum anthelmintic approved for farmed ruminants and recently considered for treatment of fish parasites. It is the subject of careful monitoring because of potential residues in animal products. This study evaluated the depletion of ABZ and its main known metabolites: albendazole sulfoxide - ABZSO, albendazole sulfone - ABZSO2 and albendazole amino sulfone - ABZ-2-NH2SO2, in the fillets of the Neotropical Characin pacu, Piaractus mesopotamicus, which were fed diets containing 10 mg ABZ kg(-1) body weight in a single dose...
November 14, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29090668/antimicrobial-potential-of-benzimidazole-derived-molecules
#19
Yogita Bansal, Manjinder Kaur, Gulshan Bansal
Structural resemblance of benzimidazole nucleus with purine nucleus in nucleotides makes benzimidazole derivatives attractive ligands to interact with biopolymers of a living system. The most prominent benzimidazole compound in nature is N-ribosyldimethylbenzimidazole, which serves as an axial ligand for cobalt in vitamin B12. This structural similarity prompted medicinal chemists across the globe to synthesize a variety of benzimidazole derivatives and to screen those for various biological activities, such as anticancer, hormone antagonist, antiviral, anti-HIV, anthelmintic, antiprotozoal, antimicrobial, antihypertensive, anti-inflammatory, analgesic, anxiolytic, antiallergic, coagulant, anticoagulant, antioxidant and antidiabetic activities...
October 31, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/29090320/gastrointestinal-parasites-of-captive-european-bison-bison-bonasus-l-with-a-sign-of-reduced-efficacy-of-haemonchus-contortus-to-fenbendazole
#20
Anna M Pyziel, Sven Björck, Rikard Wiklund, Moa Skarin, Aleksander W Demiaszkiewicz, Johan Höglund
The history of European bison Bison bonasus Linnaeus, 1758 has been stormy since its extinction in the wild after the First World War. Due to the fact that the species was restored from just 12 founders, further expansion has suffered from low genetic variability, rendering the bison vulnerable to various pathogens due to inbreeding depression. Parasites are recognised as a key biological threat to bison population. Thus, parasitological examination including monitoring of the level of anthelmintic resistance in a herd should be a routine procedure involved in management and protection of European bison...
October 31, 2017: Parasitology Research
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