Results 11 to 20 of about 50 (48)

Endogenous Transplacental Transmission of Neospora hughesi in Naturally Infected Horses

Journal of Parasitology, 2011
Over a 2-yr study period, we investigated possible endogenous transplacental transmission of Neospora hughesi in 74 mare and foal pairs following the diagnosis of neuronal neosporosis in a weanling foal. Presuckle and postsuckle serum of each foal, serum and colostrum of each periparturient mare, and serum of each mare and foal pair, collected at 3-mo ...
N, Pusterla, P A, Conrad, A E, Packham, S M, Mapes, C J, Finno, I A, Gardner, B C, Barr, G L, Ferraro, W D, Wilson   +8 more
openaire   +2 more sources

Risk of postnatal exposure to Sarcocystis neurona and Neospora hughesi in horses

American Journal of Veterinary Research, 2004
Abstract Objective—To estimate risk of exposure and age at first exposure to Sarcocystis neurona and Neospora hughesi and time to maternal antibody decay in foals. Animals—484 Thoroughbred and Warmblood foals from 4 farms in California.
Paulo C, Duarte, Patricia A, Conrad, W David, Wilson, Gregory L, Ferraro, Andrea E, Packham, Jeanne, Bowers-Lepore, Tim E, Carpenter, Ian A, Gardner   +7 more
openaire   +2 more sources

Molecular comparison of the dense granule proteins GRA6 and GRA7 of Neospora hughesi and Neospora caninum

International Journal for Parasitology, 2001
Neospora hughesi is a recently described apicomplexan parasite that has been associated with several cases of equine protozoal myeloencephalitis. The biology of this new parasite is just beginning to be defined. Towards this understanding, we report important differences between the nucleotide and deduced amino acid sequences of the dense granule ...
C P, Walsh, R, Vemulapalli, N, Sriranganathan, A M, Zajac, M C, Jenkins, D S, Lindsay   +5 more
openaire   +2 more sources

RISK OF TRANSPLACENTAL TRANSMISSION OF SARCOCYSTIS NEURONA AND NEOSPORA HUGHESI IN CALIFORNIA HORSES

Journal of Parasitology, 2004
The study objective was to assess the risk of transplacental transmission of Sarcocystis neurona and Neospora hughesi in foals from 4 California farms during 3 foaling seasons. Serum of presuckle foals and serum and colostrum of periparturient mares were tested using indirect fluorescent antibody tests for S. neurona and N. hughesi.
Paulo C, Duarte, Patricia A, Conrad, Bradd C, Barr, W David, Wilson, Gregory L, Ferraro, Andrea E, Packham, Tim E, Carpenter, Ian A, Gardner   +7 more
openaire   +2 more sources

Equine protozoal myeloencephalitis due to Neospora hughesi and equine motor neuron disease in a mule

Veterinary Ophthalmology, 2010
A 23-year-old female mule was presented for bilateral ocular abnormalities and an abnormal pelvic limb gait.Anisocoria, unilateral enophthalmos, medial strabismus, ptosis, pupillary light reflex deficits, and bilateral reticulated pigmentary retinopathy were observed on ophthalmic examination.
Carrie J. Finno, Joshua Seth Eaton, Monica Aleman, Steven R. Hollingsworth   +3 more
openaire   +3 more sources

Serological investigation of transplacental infection with Neospora hughesi and Sarcocystis neurona in broodmares

The Veterinary Journal, 2014
The aim of the present study was to investigate the likelihood of transplacental transmission of Neospora hughesi and Sarcocystis neurona in foals, born from seropositive mares. Three broodmares with persistent N. hughesi infection gave birth to eight healthy foals over a period of 7 years. These foals were seropositive to N. hughesi prior to colostrum
Nicola, Pusterla, Sarah, Mackie, Andrea, Packham, Patricia A, Conrad   +3 more
openaire   +2 more sources

Prevalence of Neospora hughesi and Sarcocystis neurona antibodies in horses from various geographical locations

Veterinary Parasitology, 2001
Parasite-specific antibody responses to Neospora antigens were detected using the immunofluorescent antibody test (IFAT) and immunoblot analysis in select equine populations. For comparison, a naturally infected Neospora hughesi horse and an experimentally inoculated Neospora caninum horse were used.
D, Vardeleon, A E, Marsh, J G, Thorne, W, Loch, R, Young, P J, Johnson   +5 more
openaire   +2 more sources

RECOMBINANT NhSAG1 ELISA: A SENSITIVE AND SPECIFIC ASSAY FOR DETECTING ANTIBODIES AGAINST NEOSPORA HUGHESI IN EQUINE SERUM

Journal of Parasitology, 2005
Neospora hughesi is a recently identified cause of equine protozoal myeloencephalitis. However, the significance of this parasite is poorly understood. An enzyme-linked immunosorbent assay (ELISA) with a recombinant form of the N. hughesi 29-kDa surface antigen (rNhSAG1) was developed for serodiagnosis of equine N. hughesi infections.
Jessica S, Hoane, Michelle R, Yeargan, Shelby, Stamper, William J, Saville, Jennifer K, Morrow, David S, Lindsay, Daniel K, Howe   +6 more
openaire   +2 more sources

Seroprevalences of anti-Sarcocystis neurona and anti-Neospora hughesi antibodies among healthy equids in the United States

Journal of the American Veterinary Medical Association, 2017
Abstract OBJECTIVE To describe the general seroprevalence of anti-Sarcocystis neurona and anti-Neospora hughesi antibodies among healthy equids by use of indirect fluorescent antibody tests and determine potential risk factors for seropositivity. DESIGN Cross-sectional study.
Kaitlyn E, James, Woutrina A, Smith, Patricia A, Conrad, Andrea E, Packham, Leopoldo, Guerrero, Mitchell, Ng, Nicola, Pusterla   +6 more
openaire   +2 more sources

The seroprevalence and risk factors for exposure to Neospora caninum and Neospora hughesi in Ontario broodmares

Veterinary Parasitology: Regional Studies and Reports
The seroprevalence and risk factors for exposure to Neospora caninum and Neospora hughesi in broodmares in Ontario were investigated. Sixty of the 219 (27.4%) study broodmares were seropositive for N. caninum and 65/219 (29.7%) for N. hughesi with cut-offs of ≥1:40 and ≥1:160, respectively.
Olivia, Johns, David L, Pearl, Robert A, Foster, John, Barta, Tracey, Chenier   +4 more
openaire   +2 more sources