Results 41 to 50 of about 113,437 (249)

Synthesis of Macrocyclic Lactones

open access: yesJournal of Japan Oil Chemists' Society, 1970
Erucic acid (I) as starting material has been used to synthesize 1, 14-tetradecanolide in the macrocyclic lactones, which has practical value as musk like odor.Erucyl bromide (IV) was synthesized by reduction of ethyl erucinonate (II) into erucyl alcohol (III) followed by bromination.As method (a), prepared the nitrile by usual method, and nitrile was ...
Hiromu KAMEOKA   +3 more
openaire   +2 more sources

Depolymerization and Reuse of Polycarbonates: Emerging Classes, Mechanisms and Challenges

open access: yesAngewandte Chemie, EarlyView.
This review collects the latest developments in the area of chemical and catalytic polycarbonate recycling strategies and includes the controlled degradation of similar types of macromolecules. Apart from the main strategies for deconstruction, the key mechanistic features of these depolymerization processes are also discussed together with the ...
Davide Rigo   +4 more
wiley   +2 more sources

Resistance of Haemonchus, Cooperia, Trichostrongylus, and Oesophagostomum to ivermectin in dairy cattle in Paraná

open access: yesSemina: Ciências Agrárias, 2015
The objective of this study was to analyze the effect of ivermectin (3.15%) on gastrointestinal nematodes found in calves through the fecal egg count reduction test (FECRT), and larval culture in 16 animals from a school farm at the Universidade Estadual
Luciane Holsback   +4 more
doaj   +1 more source

Ivermectin: An Anti-Parasitic Drug that has Potential for Repurposing for COVID-19

open access: yesBioMedica, 2020
After global health catastrophe due to Coronavirus disease-2019 (COVID-19), a deep impact on the way we perceive our world and our everyday lives has been imprinted.
Maryam Rashid, Mariyam Iftikhar Piracha
doaj   +1 more source

Anthelmintic-resistant nematodes in Irish commercial sheep flocks- the state of play

open access: yesIrish Veterinary Journal, 2012
Anthelmintic resistance has been reported in most sheep producing countries. Prior to the mid 1990s, reports of anthelmintic resistance in Ireland were sparse and focused on benzimidazole, one of the three classes of anthelmintic available during this ...
Good Barbara   +5 more
doaj   +1 more source

Repertoire of P-glycoprotein drug transporters in the zoonotic nematode Toxocara canis

open access: yesScientific Reports, 2023
Toxocara canis has a complex lifecycle including larval stages in the somatic tissue of dogs that tolerate macrocyclic lactones. In this study, we investigated T.
Jeba R. J. Jesudoss Chelladurai   +6 more
doaj   +1 more source

Grassland management and helminth control on cattle farms [PDF]

open access: yes, 2017
Farmers manage their pastures and grazing animals primarily to ensure that swards provide adequate, quality nutrients to support animal performance, but it is also possible to provide useful levels of parasite control without compromising production.
Forbes, Andrew
core   +1 more source

Increased expression of a microRNA correlates with anthelmintic resistance in parasitic nematodes [PDF]

open access: yes, 2017
Resistance to anthelmintic drugs is a major problem in the global fight against parasitic nematodes infecting humans and animals. While previous studies have identified mutations in drug target genes in resistant parasites, changes in the expression ...
Bartley, David   +13 more
core   +2 more sources

Anthelmintic resistance in equine nematodes: Current status and emerging trends

open access: yesInternational Journal for Parasitology: Drugs and Drug Resistance, 2022
Anthelmintic resistance is reported in equine nematodes with increasing frequency in recent years, and no new anthelmintic classes have been introduced during the past 40 years.
M.K. Nielsen
doaj   +1 more source

Evaluation of the efficacy of ProHeart® 6 (moxidectin) against a resistant isolate of Dirofilaria immitis (JYD-34) in dogs

open access: yesParasites & Vectors, 2017
Background In a previous study, it was demonstrated that ProHeart® 6 (PH6) (moxidectin, Zoetis) provided only about 20% efficacy in a small six-dog study against a macrocyclic lactone –resistant Dirofilaria immitis isolate (Jd2009–2) when dogs were ...
Dwight D. Bowman   +6 more
doaj   +1 more source

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