RESUMEN
Descrevem-se as doenças gástricas de avestruzes diagnosticadas em um Laboratório de Doenças das Aves, Belo Horizonte-MG, entre 1997 e 2009. As afecções gástricas corresponderam a 46,2% de todos os casos de doença, com quadros que incluíram impactação (83,3%), infecções e parasitoses (16,7%). As impactações foram causadas por material não alimentar diversificado e as infecções e parasitoses incluíram o fungo Macrorhabdus ornithogaster (megabacteria) e o nematódeo Libyostrongylus douglassii.
Asunto(s)
Animales , Técnicas de Laboratorio Clínico , Enfermedades Gastrointestinales/etiología , Enfermedades Gastrointestinales/prevención & control , Enfermedades Gastrointestinales/veterinaria , Struthioniformes/parasitologíaRESUMEN
Skin biopsies were taken from four body sites (head, thorax, flank and perineum) of three male entire Beagles and the primary hair follicles were isolated. Culture conditions were established to keep the hair follicles growing for up to 7 days. Additionally, hair follicles were incubated in supplemented medium (containing insulin, transferrin, glutamine and sodium selenite) with or without the addition of testosterone (T) (1, 10 or 100 ng/ml) or oestradiol-17beta (E2beta) (0.01, 0.1 or 1 ng/ml), respectively and the daily growth of hair follicles was measured. In vitro daily growth of hair follicles from the thorax was stimulated by the low concentration of both hormones, but the growth of those from the flank was inhibited by the high concentration of both hormones. Hair follicles from the head were positively influenced by the lowest concentration of T and the medium concentration of E2beta. The daily growth of hair follicles from the perineum was not significantly influenced by either hormone.
Asunto(s)
Perros/metabolismo , Estradiol/farmacología , Folículo Piloso/efectos de los fármacos , Folículo Piloso/fisiología , Testosterona/farmacología , Animales , Medios de Cultivo , Técnicas de Cultivo , Relación Dosis-Respuesta a Droga , Estradiol/administración & dosificación , Masculino , Testosterona/administración & dosificaciónRESUMEN
The significance of morphology and the number of lymphocyte nucleoli was evaluated by electronmicroscopic sections of malignant lymphomas. It was not only the number and the size of nucleoli which characterized malignant lymphomas differing in histological respect, but above all the different morphology of the nucleoli. The prognostic significance of the nucleolus can be illustrated, if malignant lymphomas of a low grade malignancy with a preponderance of micronucleoli and a low nucleolar index are compared with a significantly higher nucleolar index and markedly increased macronucleoli. These differences are further supplemented by additional morphological properties of nucleoli in malignant lymphomas.
