9 documents found, page 1 of 1
Phenotypic and genotypic approaches for detection of anthelmintic resistant she...
Araújo-Filho,José Vilemar de; Ribeiro,Wesley Lyeverton Correia; André,Weibson Paz Pinheiro; Cavalcante,Géssica Soares; Santos,Jéssica Maria Leite dosAbstract The aim of this study was to characterize the anthelmintic resistance (AR) of a sheep gastrointestinal nematode population, named Caucaia, from northeastern Brazil. Phenotypic tests performed were: egg hatch (EHT), larval development (LDT) and fecal egg count reduction (FECRT). Benzimidazoles (BZs) genotypic evaluation was by frequency of single nucleotide polymorphisms (SNPs) F200Y, F167Y and E198A, a...
Anthelmintic activity of nanoencapsulated carvacryl acetate against gastrointes...
André,Weibson Paz Pinheiro; Paiva Junior,José Ribamar de; Cavalcante,Géssica Soares; Ribeiro,Wesley Lyeverton Correia; Araújo Filho,José Vilemar deAbstract The objective of this study was to evaluate the efficacy of carvacryl acetate (CVA) and nanoencapsulated CVA (nCVA) on gastrointestinal nematodes of sheep. The CVA was nanoencapsulated with chitosan/gum arabic and the efficacy of nanoencapsulation (EE), yield, zeta potential, nanoparticle morphology and release kinetics at pH 3 and 8 were analyzed. Acute and subchronic toxicity were evaluated in rodent...
Chemical constituents of Calotropis procera latex and ultrastructural effects o...
Cavalcante,Géssica Soares; Morais,Selene Maia de; André,Weibson Paz Pinheiro; Araújo-Filho,José Vilemar de; Muniz,Celli RodriguesAbstract This study aimed to evaluate the anthelmintic and ultrastructural effects of Calotropis procera latex on Haemonchus contortus. C. procera latex was twice centrifuged at 10,000×g and dialyzed to obtain a fraction rich in proteins, named LP (latex protein), and at 3,000 rpm to obtain a fraction rich in secondary metabolites, named LNP (latex non-protein). Specimens of H. contortus exposed to LNP, LP and ...
Anthelmintic effect of Cymbopogon citratus essential oil and its nanoemulsion o...
Macedo,Iara Tersia Freitas; Oliveira,Lorena Mayana Beserra de; André,Weibson Paz Pinheiro; Araújo Filho,José Vilemar de; Santos,Jéssica Maria Leite dosAbstract The anthelmintic resistance stimulated the search for strategies for controlling gastrointestinal nematodes, including the use of free essential oils or its nanoemulsion. This study evaluated the anthelmintic efficacy of Cymbopogon citratus essential oil (CcEO) and C. citratus essential oil nanoemulsion (CcEOn). Pysicochemical analyses were performed. The in vitro effect was determined using the egg ha...
Anthelmintic activity of Eucalyptus citriodora essential oil and its major comp...
Araújo-Filho,José Vilemar de; Ribeiro,Wesley Lyeverton Correia; André,Weibson Paz Pinheiro; Cavalcante,Géssica Soares; Rios,Thays TabosaAbstract This study aimed to evaluate the anthelmintic activity of Eucalyptus citriodora essential oil and citronellal on sheep gastrointestinal nematodes. Essential oil composition was determined by gas chromatography mass spectrometry. The substances were evaluated in vitro using adult worm motility test (AWMT) and transmission electron microscopy (TEM). The acute toxicity test in mice and the fecal egg count...
Anthelmintic effect of thymol and thymol acetate on sheep gastrointestinal nema...
André,Weibson Paz Pinheiro; Cavalcante,Géssica Soares; Ribeiro,Wesley Lyeverton Correia; Santos,Jessica Maria Leite dos; Macedo,Iara Tersia FreitasAbstract Thymol is a monoterpene and acetylation form of this compound can reduce the toxicity and enhance its biological effects. The objective of this study was to evaluate the effect of thymol and thymol acetate (TA) on egg, larva and adult Haemonchus contortus and the cuticular changes, acute toxicity in mice and the efficacy on sheep gastrointestinal nematodes. In vitro tests results were analyzed by analy...
Anthelmintic activity of Cymbopogon citratus against Haemonchus contortus
Macedo,Iara Tersia Freitas; Oliveira,Lorena Mayana Beserra de; Ribeiro,Wesley Lyeverton Correia; Santos,Jessica Maria Leite dos; Silva,Kaline das ChagasParasitic nematodes are of major economic importance in livestock. An alternative for the control of parasites is phytotherapy. This study evaluated the efficacy of Cymbopogon citratus decoction (CcD), C. citratus essential oil (CcEo) and citral against Haemonchus contortus using in vitro egg hatch test (EHT) and larval development test (LDT) and an in vivo test using a Meriones unguiculatus (gerbil) model. The...
In vitro effects of Coriandrum sativum, Tagetes minuta, Alpinia zerumbet and La...
Macedo,Iara Tersia Freitas; Oliveira,Lorena Mayana Beserra de; Camurça-Vasconcelos,Ana Lourdes Fernandes; Ribeiro,Wesley Lyeverton CorreiaPhytotherapy can be an alternative for the control of gastrointestinal parasites of small ruminants. This study evaluated the efficacy of Alpinia zerumbet, Coriandrum sativum, Tagetes minuta and Lantana camara essential oils by two in vitro assays on Haemonchus contortus, an egg hatch test (EHT) and larval development test (LDT). No effect was observed for L. camara in the EHT. A. zerumbet, C. sativum and T. mi...
Effect of six tropical tanniferous plant extracts on larval exsheathment of Hae...
Oliveira,Lorena Mayana Beserra de; Bevilaqua,Claudia Maria Leal; Macedo,Iara Tersia Freitas; Morais,Selene Maia de; Monteiro,Maria Vivina BarrosTanniferous plants represent a promising alternative for controlling gastrointestinal nematodes of small ruminants. This experiment evaluated the effects of extracts from the leaf and stem of Anadenanthera colubrina, Leucaena leucocephala and Mimosa tenuiflora on larval exsheathment of Haemonchus contortus in vitro and verified the role of tannins in this process. Third-stage larvae of H. contortus were incubat...