Results 161 to 170 of about 14,790 (212)

Genetic diversity patterns of Haemonchus contortus isolated from sheep and goats in Bangladesh.

Infection, Genetics and Evolution, 2019
Haemonchus contortus is the most prevalent parasitic nematode among the Trichostrongylids causing severe health hazards leading to production losses in small ruminants around the world.
A. Dey, Zhongze Zhang, N. Begum, M. Alim, Min Hu, M. Alam   +5 more
semanticscholar   +1 more source

Haemonchus contortus Rudolphi

2009
Haemonchus contortus (Rudolphi) Blastocerus dichotomus (Illiger), stomach (abomaso), small intestine, São Paulo, Mato Grosso do Sul (Travassos et al. 1927; Vicente et al. 1997; Nascimento et al. 2000).
Muniz-Pereira, Luís C., Vieira, Fabiano M., Luque, José L.   +2 more
openaire   +1 more source

Pyruvate kinase in Haemonchus contortus larvae

Comparative Biochemistry and Physiology, 1968
Abstract 1. 1. By using an indirect assay procedure, pyruvate kinase was detected in Haemonchus contortus extracts. 2. 2. The level of activity detected in H. contortus was considerably lower than that detected in rat liver and the significance of these findings in relation to fermentative metabolism in parasites is discussed.
C W, Ward, P J, Schofield, I L, Johnstone   +2 more
openaire   +2 more sources

Anthelmintic effect and tissue alterations induced in vitro by hydrolysable tannins on the adult stage of the gastrointestinal nematode Haemonchus contortus.

Veterinary parasitology, 2019
Haemonchus contortus constitutes a severe problem for ruminant's production, it is the most frequent nematode parasite both in template and tropical regions, induces economical losses, and shows increasing resistance to currently available anthelmintics.
P. Acevedo-Ramírez, C. Hallal-Calleros, I. Flores-Pérez, F. Alba-Hurtado, M. B. Mendoza-Garfias, Nohemí Castro Del Campo, R. Barajas   +6 more
semanticscholar   +1 more source

Carbohydrate epitopes on Haemonchus contortus antigens

Parasitology Research, 1996
Extracts of infective larvae and adults of the trichostrongylid Haemonchus contortus were studied for the presence of carbohydrate moieties. Several different lectin-binding sites were demonstrated in both stages using a panel of nine lectins. The carbohydrate specificity of the lectins used strongly suggests that alpha-D-mannose, alpha-D-glucose, and ...
Schallig, H. D., van Leeuwen, M. A.
openaire   +3 more sources

Extracellular Matrix Degradation by Haemonchus contortus

The Journal of Parasitology, 1996
To better understand the in vivo function of secreted cysteine proteases of Haemonchus contortus, the ability of live parasites to degrade connective tissue was investigated using [3H]proline-labeled extracellular matrix produced by smooth-muscle cells (R22).
M L, Rhoads, R H, Fetterer
openaire   +2 more sources

Haemonchus contortus microtubules are cold resistant

Molecular and Biochemical Parasitology, 2014
Haemonchus contortus is an important nematode of livestock that is present in most parts of the world. The life cycle comprises free living stages (egg, L1, L2 and L3 larvae), and parasitic stages (L4, adult and egg) in a ruminant. Microtubules are filamentous structures which are made from polymerization of α- and β-tubulin. In vitro polymerization of
Shoaib Ashraf, Roger K. Prichard
openaire   +2 more sources

In vivo selection for Haemonchus contortus resistance to monepantel.

Journal of Helminthology, 2019
Gastrointestinal nematodes significantly affect the ovine industry, and Haemonchus contortus is considered the most pathogenic parasite in tropical regions. This situation is aggravated when the main strategy to control worms fails because of the genetic
S. Niciura, G. G. Cruvinel, C. V. Moraes, A. Chagas, S. N. Esteves, M. Benavides, A. Amarante   +6 more
semanticscholar   +1 more source

Levamisole binding sites in Haemonchus contortus

International Journal for Parasitology, 1998
Larval and adult extracts from isolates of Haemonchus contortus were assayed for specific [3H]levamisole binding activity. All of the tissue preparations displayed [3H]levamisole binding sites. The sensitive isolate SE and resistant isolate RJ showed no differences in larval and adult binding data. Larval SE extracts had higher receptor density (Bmax =
M J, Moreno-Guzmán, G C, Coles, A, Jiménez-González, A, Criado-Fornelio, R M, Ros-Moreno, F, Rodríguez-Caabeiro   +5 more
openaire   +2 more sources