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BMC Vet Res ; 11: 197, 2015 Aug 12.
Artigo em Inglês | MEDLINE | ID: mdl-26265349

RESUMO

BACKGROUND: Lyme borreliosis is a disease transmitted by ticks to mammals, especially in horses and humans. Caused by a spirochete Borrelia burgdorferi, it can result in lameness, arthritis, carditis, dermatitis and neurological signs. Anaphylactoid reactions are severe responses caused by direct action of substances (drugs, toxins), which can pose risks to life. Still poorly documented in horses, these reactions are caused by the effects of inflammatory mediators such as histamine, kinins and arachidonic acid metabolites. The last two are the most clinically relevant for the species. CASE PRESENTATION: The simultaneous occurrence of anaphylactoid reaction in two horses experimentally infected by Borrelia burgdorferi undergoing intravenous treatment with ceftriaxone sodium is reported. It was administered 4.7 × 10(8) spirochetes intradermal and subcutaneous applications in both horses to evaluate clinical aspects of the Lyme disease, 95 days before the application of sodium ceftriaxone. During the administration, one horse (a gelding) showed immediate and severe anaphylactoid symptoms such as urticaria, dyspnea, tachycardia, and eyelid edema, which were controlled by injecting dexamethasone. After 1 day, it expressed signs of abdominal discomfort, caused by severe bloat, which was treated surgically via celiotomy. Subsequently, this gelding had piroplasmosis and severe anemia, requiring treatment with an antimicrobial and blood transfusion. Second horse (a mare) showed signs of hypotension during the application of the antibiotic, which disappeared only when the application was interrupted. Days after the event, the mare developed moderate large colon bloat, which was treated with medication only. Subsequently the mare was evolved into the prodromal phase of laminitis in one of the forelimbs, which was treated for 10 days with non-steroidal anti-inflammatory and rheology modifying drugs and cryotherapy. CONCLUSIONS: From the two cases presented here, it does appear that sodium ceftriaxone can induce anaphylactoid reactions in horses infected by Borrelia burgdorferi, which may evolve into colic syndrome, laminitis and the occurrence of opportunistic infections. However, further evidence should be collected in order to draw definite conclusions.


Assuntos
Anafilaxia/veterinária , Borrelia burgdorferi , Ceftriaxona/efeitos adversos , Doenças dos Cavalos/induzido quimicamente , Doença de Lyme/tratamento farmacológico , Corticosteroides/uso terapêutico , Anafilaxia/induzido quimicamente , Anafilaxia/complicações , Anafilaxia/tratamento farmacológico , Animais , Antibacterianos/efeitos adversos , Anti-Inflamatórios não Esteroides/uso terapêutico , Ceftriaxona/uso terapêutico , Cólica/tratamento farmacológico , Cólica/etiologia , Cólica/cirurgia , Cólica/veterinária , Dexametasona/uso terapêutico , Feminino , Doenças do Pé/tratamento farmacológico , Doenças do Pé/etiologia , Doenças do Pé/veterinária , Casco e Garras , Doenças dos Cavalos/microbiologia , Cavalos , Inflamação/tratamento farmacológico , Inflamação/etiologia , Inflamação/veterinária , Masculino
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