Two cases of cerebrospinal setariosis in the racehorses

Two 2-year-old Thoroughbred racehorses stabled in Ibaraki Prefecture were affected with a severe disturbance in the central nervous system. At necropsy, they revealed focal hemorrhages and/or malacic lesions both of which were scattered in the cerebrum in case 1 and in the cerebrum and the cerebellum in case 2. Three filarial parasites were detected from the lesion of the right cerebral hemisphere in case 1 and from the corpus medullare in case 2. Each parasite was identified morphologically as Setaria digitata. Some researchers have confounded Setaria digitata with S. labiato-papillosa or other Setaria spp, in Europe and North America. The present report deals with the histories, clinical observations, and postmortems, parasitological and histological findings associated with cerebrospinal setariosis caused by S, digitata in two Thoroughbred racehorses.

[1]  R. Wada,et al.  Micronema deletrix Infection in the Central Nervous System of a Horse , 1985 .

[2]  R. MacKay,et al.  Migration of a spiruroid nematode through the brain of a horse. , 1982, Journal of the American Veterinary Medical Association.

[3]  J. R. Lichtenfels,et al.  Cerebrospinal nematodiasis caused by a filariid in a horse. , 1980, Journal of the American Veterinary Medical Association.

[4]  P. Fretz,et al.  Verminous encephalitis of horses: experimental induction with Strongylus vulgaris larvae. , 1974, American journal of veterinary research.

[5]  Little Pb Cerebrospinal nematodiasis of Equidae. , 1972 .

[6]  P. Little Cerebrospinal nematodiasis of Equidae. , 1972, Journal of the American Veterinary Medical Association.

[7]  A. Wood Cerebrospinal Nematodiasis in a Horse , 1970 .

[8]  Swanstrom Og,et al.  Spinal nematodosis in à horse. , 1969 .

[9]  E. Soulsby,et al.  Helminths, Arthropods and Protozoa of Domesticated Animals , 1969 .

[10]  W. Carlton,et al.  Spinal nematodosis in a horse. , 1969, Journal of the American Veterinary Medical Association.

[11]  R. Anderson The pathogenesis and transmission of neurotropic and accidental nematode parasites of the central nervous system of mammals and birds. , 1968 .

[12]  J. Sprent On the invasion of the central nervous system by nematodes: II. Invasion of the nervous system in ascariasis , 1955, Parasitology.

[13]  J. Innes,et al.  Cerebrospinal nematodiasis: focal encephalomyelomalacia of animals caused by nematodes (Setaria digitata); a disease which may occur in man. , 1953, A.M.A. archives of neurology and psychiatry.