RESUMO
In recent years, new Chlamydia species, other than Chlamydia psittaci, have been confirmed in birds. One of these new species, Chlamydia avium, was reported mainly in pigeons and parrots in Europe. Analyzing multimucosal swabs obtained from 7 Amazon parrots (Amazona aestiva) from illegal trade and admitted to the Reserva Experimental Horco Molle (Tucuman, Argentina) for their rehabilitation, we describe the finding of the genetic material of C. avium in 2 of these birds. There were no signs compatible with the chlamydiosis-like disease in the studied birds or in the rehabilitation center staff. The use of sensitive and wide-ranging molecular tools is necessary for the detection of all Chlamydiaceae present in birds and would aid in the selection of control measures in wildlife rehabilitation centers to prevent outbreaks in the facilities and the introduction of pathogens in nature. We provide the first molecular evidence of the presence of C. avium in Argentina and a new species of psittacine host.
Assuntos
Amazona , Doenças das Aves , Chlamydia , Papagaios , Psitacose , Animais , Amazona/microbiologia , Argentina , Doenças das Aves/microbiologia , Psitacose/epidemiologia , Psitacose/microbiologia , Psitacose/veterináriaRESUMO
Background: Scarce reports have been published worldwide on primary skin tumours in pet rabbits. Trichoblastoma is a rare benign neoplasm of animals and humans derived from or reduplicating the primitive germ of embryonic follicular development; it was previously classified as a basal cell tumor, meanwhile its malignant counterpart is referred to as malignant trichoblastoma or trichoblastic carcinoma. Neoplasms of domestic animals that once were lumped into the broad histologic diagnosis of basal cell tumors have since been split into distinct entities, dependent on evidence of differentiation, although a cytologic diagnosis of basal cell tumor continues to be used indistinctly to represent the large, heterogeneous group of epidermal, trichofollicular, and adnexal skin tumors with basal cell characteristics. Hereby, it is described the morphological and immunohistochemical findings of a case of spontaneous malignant trichoblastoma on a domestic companion rabbit from South America. Case: A 4-year-old, male black dwarf rabbit (Oryctolagus cuniculus) was brought to the Veterinary College when appeared with a sudden appearance of a grayish nodular subcutaneous mass measuring 3.0 x 2.0 cm and located on left tarsal zone, during march 2014. A case of malignant trichoblastoma with a predominance of trabecular architecture was diagnosed based on morphologic and microscopic results. [...]
Assuntos
Animais , Coelhos , Neoplasias Cutâneas/diagnóstico , Neoplasias Cutâneas/veterináriaRESUMO
Background: Scarce reports have been published worldwide on primary skin tumours in pet rabbits. Trichoblastoma is a rare benign neoplasm of animals and humans derived from or reduplicating the primitive germ of embryonic follicular development; it was previously classified as a basal cell tumor, meanwhile its malignant counterpart is referred to as malignant trichoblastoma or trichoblastic carcinoma. Neoplasms of domestic animals that once were lumped into the broad histologic diagnosis of basal cell tumors have since been split into distinct entities, dependent on evidence of differentiation, although a cytologic diagnosis of basal cell tumor continues to be used indistinctly to represent the large, heterogeneous group of epidermal, trichofollicular, and adnexal skin tumors with basal cell characteristics. Hereby, it is described the morphological and immunohistochemical findings of a case of spontaneous malignant trichoblastoma on a domestic companion rabbit from South America. Case: A 4-year-old, male black dwarf rabbit (Oryctolagus cuniculus) was brought to the Veterinary College when appeared with a sudden appearance of a grayish nodular subcutaneous mass measuring 3.0 x 2.0 cm and located on left tarsal zone, during march 2014. A case of malignant trichoblastoma with a predominance of trabecular architecture was diagnosed based on morphologic and microscopic results. [...](AU)