Cases reported "Horse Diseases"

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1/31. Primary hypoparathyroidism in two horses.

    Two Thoroughbred horses were presented with various clinical signs which included sweating, agitation, muscle twitching and synchronous diaphragmatic flutter. These signs were associated with profound hypocalcaemia. A diagnosis of primary hypoparathyroidism was made on the basis of low serum ionised calcium concentration, hyperphosphataemia and markedly reduced serum immunoreactive parathyroid hormone concentrations in the presence of normal renal function. Treatment with a combination of intravenous calcium and subsequently oral calcium, magnesium and a vitamin d analogue (dihydrotachysterol) for up to 65 days resulted in complete remission of clinical signs. Horse 1 was euthanased 12 months after the initial recognition of signs. Results of necropsy were unremarkable apart from an absence of detectable parathyroid tissue. Horse 2 returned to athletic activities while receiving only maintenance doses of oral calcium carbonate.
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keywords = horse
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2/31. Comparative pathology, and immunohistology associated with clinical illness after ehrlichia phagocytophila-group infections.

    The ehrlichia phagocytophila-group also includes E. equi and the human granulocytic ehrlichiosis (HGE) agent that are probably a single species. disease is mild to severe illness in ruminants, horses, and humans, but the comparative pathology and ehrlichial distribution in tissues is poorly described. We compared pathology and ehrlichial distribution in humans with HGE, horses with E. equi infection, and a sheep with E. phagocytophila infection. Frequent findings included splenic lymphoid depletion, small macrophage aggregates and apoptoses in liver, and paracortical hyperplasia in lymph nodes. bone marrow was normocellular or hypercellular. Only the spleen was frequently infected; other organs with infected cells included lung, liver, heart, and kidney, but lesions were present in lung and liver only. Most infected cells were neutrophils. ehrlichia phagocytophila-group infections are associated with moderate tissue damage. While the pathogenesis of granulocytic ehrlichiosis is not clear, pathologic studies suggest that the process is initiated by ehrlichia-infected cells but may result from host-mediated injury and immunosuppression.
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keywords = horse
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3/31. Streptococcal meningitis resulting from contact with an infected horse.

    We report a case of group C streptococcal meningitis in a woman with a history of close animal contact as well as head trauma as a result of a kick by a horse. blood and cerebrospinal fluid cultures grew streptococcus equi subsp. zooepidemicus, as did a throat culture taken from the colt that had kicked her 2 weeks prior to admission.
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keywords = horse
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4/31. Isolation and characterization of two European strains of ehrlichia phagocytophila of equine origin.

    We report the isolation and partial genetic characterization of two equine strains of granulocytic ehrlichia of the genogroup ehrlichia phagocytophila. Frozen whole-blood samples from two Swedish horses with laboratory-verified granulocytic ehrlichiosis were inoculated into HL-60 cell cultures. Granulocytic ehrlichia was isolated and propagated from both horses. dna extracts from the respective strains were amplified by PCR using primers directed towards the 16S rRNA gene, the groESL heat shock operon gene, and the ank gene. The amplified gene fragments were sequenced and compared to known sequences in the GenBank database. With respect to the 16S rRNA gene, the groESL gene, and the ank gene, the dna sequences of the two equine ehrlichia isolates were identical to sequences found in isolates from clinical cases of granulocytic ehrlichiosis in humans and domestic animals in sweden. However, compared to amplified dna from an American ehrlichia strain of the E. phagocytophila genogroup, differences were found in the groESL gene and ank gene sequences.
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keywords = horse
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5/31. Emerging viral infections in australia.

    hendra virus infection should be suspected in someone with close association with horses or bats who presents acutely with pneumonia or encephalitis (potentially after a prolonged incubation period). Australian bat lyssavirus infection should be suspected in a patient with a progressive neurological illness and a history of exposure to a bat. rabies vaccine and immunoglobulin should be strongly considered after a bite, scratch or mucous membrane exposure to a bat. Japanese encephalitis vaccine should be considered for people intending to reside in or visit endemic areas of southern or eastern Asia for more than 30 days.
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keywords = horse
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6/31. Acquisition of coccidioidomycosis at necropsy by inhalation of coccidioidal endospores.

    coccidioidomycosis is accepted as being noncontagious because the infectious arthroconidial form of coccidioides immitis is not produced in humans and other mammalian hosts. However, disseminated coccidioidomycosis developed in a veterinarian who autopsied a horse with disseminated disease but without draining lesions or productive cough. We postulate transmission occurred by inhalation of tissue-phase endospores aerosolized in the course of dissection.
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ranking = 0.2
keywords = horse
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7/31. Intraepidermal animal-type melanoma.

    Animal-type melanoma is a rare variant of melanoma in humans.1 Its name is derived from its histological appearance, which is similar to that described in melanomas occurring in white or gray horses.2 All tumors are dermally located, and characterized by a proliferation of deeply pigmented elongated or rounded cells, showing moderate atypia and a low mitotic rate. In some tumors, secondary infiltration of the epidermis has been noted. More than half of the patients are younger than 30 years, and prognosis seems to be much better than that expected for a superficial spreading or nodular melanoma of the same size. We report the first case of animal-type melanoma in situ.
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keywords = horse
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8/31. hendra virus infection in a veterinarian.

    A veterinarian became infected with hendra virus (HeV) after managing a terminally ill horse and performing a limited autopsy with inadequate precautions. Although she was initially only mildly ill, serological tests suggested latent HeV infection. Nevertheless, she remains well 2 years after her initial illness. Recently emerged zoonotic viruses, such as HeV, necessitate appropriate working procedures and personal protective equipment in veterinary practice.
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ranking = 0.2
keywords = horse
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9/31. Immunoglobulin lambda-light-chain-derived amyloidosis (A lambda) in two horses.

    Tumorous amyloid deposits in the nasal mucosa of two horses differed from generalized AA-amyloidosis with respect to clinical features, organ distribution, and resistance to KMnO4 treatment. Using a panel of antibodies directed against different human amyloid fibril proteins and employing the peroxidase-anti-peroxidase (PAP) technique, we showed the described equine amyloid to be A lambda-type, as demonstrated by immunohistochemical cross-reactivity. Consequently, we identified a second amyloid class in horses and showed that immunoglobulin light-chain-derived amyloid may also be present in animals.
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ranking = 1.2
keywords = horse
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10/31. Horse pill ("bute") hemorrhage.

    phenylbutazone (PBZ) is a nonsteroidal antiinflammatory drug (NSAID) that is not commonly prescribed due to the high incidence of serious adverse reactions. However, it is still used extensively in equine medicine, and is readily available to those employed in the care and management of horses. Such persons may take the drug indiscriminately, without medical supervision. We present a 33-year-old male race horse track worker who took phenylbutazone horse pills for a chronic toothache and subsequently suffered a major hemorrhage from a gastric ulcer. Human use of phenylbutazone horse pills should be considered by physicians confronted with patients who have upper gastrointestinal symptoms and gastric injury and who belong to this select group.
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ranking = 0.8
keywords = horse
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