RESUMO
Rainbow trout (Oncorhynchus mykiss) developed a post-infectious chronic membranous glomerulonephritis 15 months after they had been experimentally infected with Renibacterium salmoninarum. Histologically, peritubular and periglomerular fibrosis, hypercellular glomeruli with occluded Bowman's space, and partial or complete adhesion to Bowman's capsule were constant features. Electron microscopy revealed thickened glomerular basement membranes with spikes accompanied by finely granular electron-dense deposits at the epithelial side and dense material in the mesangial matrix. Indirect immunofluorescence indicated linear immunoglobulin deposits along the glomerular basement membrane. The presence of R. salmoninarum was demonstrated by culture and by indirect immunofluorescence. Low serum hemagglutination-inhibiting antibody titers were demonstrated.
Assuntos
Doenças dos Peixes/etiologia , Glomerulonefrite/veterinária , Infecções por Bactérias Gram-Positivas/veterinária , Doenças do Complexo Imune/veterinária , Truta , Animais , Complexo Antígeno-Anticorpo/análise , Membrana Basal/patologia , Membrana Basal/ultraestrutura , Doença Crônica , Doenças dos Peixes/patologia , Imunofluorescência , Glomerulonefrite/etiologia , Glomerulonefrite/patologia , Bacilos Gram-Positivos Asporogênicos/isolamento & purificação , Infecções por Bactérias Gram-Positivas/complicações , Infecções por Bactérias Gram-Positivas/patologia , Doenças do Complexo Imune/etiologia , Doenças do Complexo Imune/patologia , Imuno-Histoquímica , Rim/imunologia , Rim/microbiologia , Rim/patologia , Rim/ultraestrutura , Túbulos Renais Proximais/patologia , Túbulos Renais Proximais/ultraestrutura , Microscopia EletrônicaRESUMO
In November 1987 high losses of carp (Cyprinus carpio) with the main symptom of skin ulcera were observed in a farm in northern Greece. Sixty-six isolates of bacteria, characterized mainly as Aeromonas hydrophila or Pseudomonas spp. could be isolated from lesions of diseased fish. Transmission experiments with these isolates using mirror carp showed that Aeromonas hydrophila strains induced identical clinical and pathological pictures after intra- or subcutaneous injection. Extracts of these Aeromonas hydrophila isolates, as well as a supernatant of culture bouillon were toxic for carp and mice, indicating the presence of endo- and exotoxins. The results prove that carp erythrodermatitis (CE) may be caused by different bacteria, mainly including A. hydrophila.
Assuntos
Aeromonas/isolamento & purificação , Infecções Bacterianas/veterinária , Carpas , Dermatite Esfoliativa/veterinária , Doenças dos Peixes/microbiologia , Animais , Infecções Bacterianas/microbiologia , Dermatite Esfoliativa/microbiologia , Surtos de Doenças/veterináriaRESUMO
The compatibility and efficacy of enrofloxacin (Baytril) a newly developed antibiotic belonging to the quinolones, were tested for five ornamental fish species (Herotilapia multispinosa, Pterophyllum scalare, Symphysodon discus, Brachydanio rerio and Melanochromis johanni). The results prove that enrofloxacin has a high tolerance level for ornamental fishes and high efficacy against important bacterial diseases. 30 micrograms/l water over 5 hours are recommended for the treatment of ornamental fishes.
Assuntos
Anti-Infecciosos/uso terapêutico , Infecções Bacterianas/veterinária , Doenças dos Peixes/tratamento farmacológico , Fluoroquinolonas , Quinolonas , 4-Quinolonas , Animais , Infecções Bacterianas/tratamento farmacológico , Enrofloxacina , PeixesRESUMO
Bacterial kidney disease (BKD) is the most important bacterial infection in salmonid fish. Clinics, pathomorphology, distribution and possibility of therapy of BKD are discussed regarding results of literature as well as own experiences.
Assuntos
Infecções Bacterianas/veterinária , Doenças dos Peixes/microbiologia , Nefropatias/veterinária , Salmonidae/microbiologia , Animais , Infecções Bacterianas/epidemiologia , Infecções Bacterianas/microbiologia , Infecções Bacterianas/transmissão , Doenças dos Peixes/epidemiologia , Doenças dos Peixes/transmissão , Nefropatias/epidemiologia , Nefropatias/microbiologia , Nefropatias/transmissãoRESUMO
During an outbreak of a mild upper respiratory tract infection in a university children's hospital in Munich, an H1N1 influenza virus was isolated. Serological analysis of the isolate showed that antigenically the virus resembled the USSR/90/77 strain of influenza A virus which has been isolated in many parts of the world during the last two years.