RESUMO
This article describes the etiology, clinical signs, diagnosis, and treatment of various equine nodular diseases. Although of different etiologies, this group of diseases shares a common histologic reaction pattern characterized by infiltration of eosinophils and collagen degeneration. Collagenolytic granuloma, axillary nodular necrosis, unilateral papular dermatosis/eosinophilic folliculitis, amyloidosis, habronemiasis, and mast cell tumors are discussed.
Assuntos
Dermatite/veterinária , Eosinofilia/veterinária , Doenças dos Cavalos/patologia , Amiloidose/patologia , Amiloidose/veterinária , Animais , Dermatite/patologia , Diagnóstico Diferencial , Eosinofilia/patologia , Granuloma Eosinófilo/patologia , Granuloma Eosinófilo/veterinária , Cavalos , Sarcoma de Mastócitos/patologia , Sarcoma de Mastócitos/veterinária , Dermatopatias Parasitárias/patologia , Dermatopatias Parasitárias/veterinária , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/veterinária , Infecções por Spirurida/patologia , Infecções por Spirurida/veterináriaRESUMO
Coculture of stallion sperm with monolayers of equine oviductal epithelial cells (OEC) was evaluated. Monolayers were obtained from frozen-thawed OEC. Live sperm attached to the OEC in vitro, whereas sperm killed by heat treatment or glutaraldehyde fixation did not. Sperm attached to OEC showed flagellar motion for 4 d in vitro, during which time they gradually became released. Scanning electron-micrographs showed an intimate association between the sperm and OEC. Incubation of sperm for 4 h with either control, heparinized or OEC-conditioned medium (Tyrode's albumin lactate phosphate) resulted in more incapacitated sperm, as determined by chlortetracycline staining patterns. The OEC-conditioned medium caused similar capacitation-like changes to those seen with heparin. Sperm viability as determined by Hoechst 33258 staining was not significantly affected by media type.
