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1.
J Am Vet Med Assoc ; 242(7): 992-6, 2013 Apr 01.
Article in English | MEDLINE | ID: mdl-23517213

ABSTRACT

CASE DESCRIPTION: A 7-year-old Quarter Horse gelding used for unsanctioned racing was examined because of fever and anorexia. CLINICAL FINDINGS: Physical examination revealed fever, tachycardia, and tachypnea. Results of a CBC indicated anemia and mild thrombocytopenia. Results of microscopic examination of a blood smear indicated piroplasms in erythrocytes, consistent with Babesia spp. Regulatory authorities were contacted, and results of serologic testing at the National Veterinary Services Laboratories confirmed acute Babesia equi infection. TREATMENT AND OUTCOME: Equids on the home premises of the index horse were placed under quarantine. Those equids were tested for piroplasmosis, and 6 of 63 horses had positive results for B equi. Another horse that had previously been housed on the index premises also had positive results for B equi. Competent tick vectors for piroplasmosis organisms were not identified. All 8 horses with piroplasmosis were Quarter Horses that participated in unsanctioned racing and were trained by the same person. Two of the horses were illegally removed from the index premises; these 2 horses and the other horse with piroplasmosis that was previously housed on the index premises could not be found. The other 5 horses with piroplasmosis were euthanized. Investigators concluded that transmission of B equi among horses was most likely iatrogenic. CLINICAL RELEVANCE: The United States has been considered piroplasmosis free. However, veterinarians should consider piroplasmosis in horses with signalments and clinical signs similar to those of the index horse of this report. Regulatory authorities should be contacted regarding horses in which piroplasmosis is suspected.


Subject(s)
Anemia/veterinary , Babesia/classification , Babesiosis/veterinary , Horse Diseases/etiology , Anemia/etiology , Anemia/microbiology , Animals , Babesiosis/complications , Babesiosis/microbiology , Horse Diseases/microbiology , Horse Diseases/pathology , Horses , Male , Running , Sports
2.
Vet Ther ; 11(1): E1-8, 2010.
Article in English | MEDLINE | ID: mdl-20949429

ABSTRACT

Pituitary pars intermedia dysfunction (PPID) is probably the most common disease of geriatric horses. Affected horses show a variety of clinical signs, including hirsutism, polyuria/polydipsia, immunosuppression, muscle wasting, and laminitis. The most common treatment for PPID is pergolide, a dopamine agonist; however, there are no pharmacokinetic data about the use of this drug in horses. This article describes a study designed to address this complete lack of pharmacokinetic information. The pharmacokinetics of pergolide are described in a small group of relatively young, healthy mares (n = 6), with the objective of generating data on which to base larger studies in the future. To make definitive dosing recommendations to clinicians, more studies will be needed to investigate the relationship between plasma pergolide concentrations and clinical outcomes, as well as the effect of gender, age, and concomitant disease on the absorption and disposition of this drug.


Subject(s)
Dopamine Agonists/pharmacokinetics , Horses/metabolism , Pergolide/pharmacokinetics , Administration, Oral , Animals , Dopamine Agonists/administration & dosage , Dopamine Agonists/blood , Female , Horses/blood , Pergolide/administration & dosage , Pergolide/blood
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