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Abstract

The protozoan parasite Neospora caninum causes fetal death after experimental infection of pregnant cattle in early gestation, but the fetus survives a similar infection in late gestation. An increase in Th1-type cytokines in the placenta in response to the presence of the parasite has been...

Author(s)
Rosbottom, A.; Gibney, E. H.; Guy, C. S.; Anja Kipar; Smith, R. F.; Kaiser, P.; Trees, A. J.; Williams, D. J. L.
Publisher
American Society for Microbiology (ASM), Washington, USA
Citation
Infection and Immunity, 2008, 76, 6, pp 2352-2361
Abstract

It was determined that the filarial parasitic nematode of West African cattle O. armillata carries in its tissues Wolbachia, an endosymbiotic, Rickettsia-like bacteria. The host inflammatory cell environment around the adult worms is dominated by macrophages and fibroblasts. Thus, O. armillata...

Author(s)
Neary, J. M.; Ekale, D. D.; Tanya, V. N.; Makepeace, B. L.; Trees, A. J.
Publisher
British Cattle Veterinary Association, Quedgeley, UK
Citation
Cattle Practice, 2011, 19, 1, pp 65-69
Abstract

Background: Human onchocerciasis or river blindness, caused by the filarial nematode Onchocerca volvulus, is currently controlled using the microfilaricidal drug, ivermectin. However, ivermectin does not kill adult O. volvulus, and in areas with less than 65% ivermectin coverage of the population,...

Author(s)
Bronsvoort, B. M. de C.; Makepeace, B. L.; Renz, A.; Tanya, V. N.; Fleckenstein, L.; Ekale, D.; Trees, A. J.
Publisher
BioMed Central Ltd, London, UK
Citation
Parasites and Vectors, 2008, 1, 18, pp (20 June 2008)
Abstract

Onchocerciasis (river blindness), caused by the filarial nematode Onchocerca volvulus, is a major cause of visual impairment and dermatitis in sub-Saharan Africa. As O. volvulus contains an obligatory bacterial symbiont (Wolbachia), it is susceptible to antibiotic chemotherapy, although current...

Author(s)
Bah, G. S.; Ward, E. L.; Srivastava, A.; Trees, A. J.; Tanya, V. N.; Makepeace, B. L.
Publisher
American Society for Microbiology (ASM), Washington, USA
Citation
Antimicrobial Agents and Chemotherapy, 2014, 58, 2, pp 801-810
Abstract

A field survey was conducted to evaluate susceptibility of Rhipicephalus (Boophilus) microplus to cypermethrin on 49 farms in three areas of Yucatan, Mexico. The modified larval packet test was used to evaluate larval mortality at different cypermethrin concentrations. Dose-mortality regressions,...

Author(s)
Rodriguez-Vivas, R. I.; Hodgkinson, J. E.; Rosado-Aguilar, J. A.; Villegas-Perez, S. L.; Trees, A. J.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Veterinary Parasitology, 2012, 184, 2/4, pp 221-229
Abstract

Rhipicephalus (Boophilus) microplus is an endemic cattle pest in tropical and subtropical regions of the world, causing major economic losses to cattle producers. Chemical acaricides have played a pivotal role in the control of R. (B.) microplus; however, as a consequence of extensive use of...

Author(s)
Rodríguez-Vivas, R. I.; Hodgkinson, J. E.; Trees, A. J.
Publisher
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), Mexico City, Mexico
Citation
Revista Mexicana de Ciencias Pecuarias, 2012, 3, Suplemento 1, pp 9-24
Abstract

The protozoan parasite Neospora caninum is the most frequently diagnosed abortifacient in the UK and a leading cause of abortion worldwide but the mechanisms leading to abortion are not fully understood. The distribution of parasites and the histopathological changes in the placenta and foetus were ...

Author(s)
Gibney, E. H.; Kipar, A.; Rosbottom, A.; Guy, C. S.; Smith, R. F.; Hetzel, U.; Trees, A. J.; Williams, D. J. L.
Publisher
Elsevier, Oxford, UK
Citation
International Journal for Parasitology, 2008, 38, 5, pp 579-588
Abstract

This brief review, which arose from a workshop on the economics of coccidiosis held at the COST 820 meeting, discusses the possible effects of neosporosis which are of economic significance and summarizes the available estimates of their magnitude to provide a basis for further economic analysis....

Author(s)
Trees, A. J.; Davison, H. C.; Innes, E. A.; Wastling, J. M.
Citation
International Journal for Parasitology, 1999, 29, 8, pp 1195-1200
Abstract

Background: Ivermectin (Mectizan) is being widely used in the control of human onchocerciasis (Onchoverca volvulus) because of its potent effect on microfilariae. Human studies have suggested that, at the standard dose of 150 µg/kg, an annual treatment schedule of ivermectin reversibly interferes...

Author(s)
Bronsvoort, B. M. de C.; Renz, A.; Tchakouté, V.; Tanya, V. N.; Ekale, D.; Trees, A. J.
Publisher
BioMed Central Ltd, London, UK
Citation
Filaria Journal, 2005, 4, 8, pp (08 August 2005)
Abstract

Although vector control and ivermectin chemotherapy have led to a dramatic reduction in the incidence of river blindness (onchocerciasis), there is a consensus that additional control tools are required to sustain and extend this success. The recognition of endosymbiotic bacteria (Wolbachia) in...

Author(s)
Nfon, C. K.; Makepeace, B. L.; Njongmeta, L. M.; Tanya, V. N.; Trees, A. J.
Publisher
American Society of Tropical Medicine and Hygiene, Northbrook, USA
Citation
American Journal of Tropical Medicine and Hygiene, 2007, 76, 1, pp 67-72

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