RESUMO
The [18F]Fluorocholine ([18F]FCH) tracer for PET imaging has been proven to be effective for several malignances. However, there are only a few studies related to its breast tumor applicability and they are still limited. The aim of this study was investigate the efficacy of [18F]FCH/PET compared to [18F]FDG/PET in a murine 4T1 mammary carcinoma model treated and nontreated. [18F]FCH/PET showed its applicability for primary tumor and lung metastasis detection and their use for response monitoring of breast cancer therapeutics at earlier stages.
Assuntos
Neoplasias da Mama/diagnóstico por imagem , Neoplasias Mamárias Experimentais/diagnóstico por imagem , Animais , Antineoplásicos/uso terapêutico , Neoplasias da Mama/patologia , Neoplasias da Mama/terapia , Linhagem Celular Tumoral , Colina/análogos & derivados , Cinamatos/uso terapêutico , Depsídeos/uso terapêutico , Progressão da Doença , Feminino , Radioisótopos de Flúor , Fluordesoxiglucose F18 , Humanos , Neoplasias Pulmonares/diagnóstico por imagem , Neoplasias Pulmonares/patologia , Neoplasias Pulmonares/secundário , Neoplasias Mamárias Experimentais/patologia , Neoplasias Mamárias Experimentais/terapia , Camundongos , Camundongos Endogâmicos BALB C , Tomografia por Emissão de Pósitrons/métodos , Compostos Radiofarmacêuticos , Ácido RosmarínicoRESUMO
Human herpesvirus type 1 (HHV-1) is widely dispersed among the human population. Although infection is often asymptomatic in humans, nonhuman primates develop a severe and often fatal infection. In August 2006, 13 black-tufted marmosets (Callithrix penincillata) from a group of 14 presented with clinical apathy, anorexia, and ataxia. Physical examination revealed conjunctivitis, erosive or ulcerative lesions on the skin, and swollen lymph nodes. Of the 14 animals captured, 10 died. Grossly, ulcers and erosions were observed on the skin of face, nasal planum, lips, and oral mucosa. Histologically, superficial vesicular and erosive stomatitis with associated basophilic intranuclear inclusion bodies in the squamous epithelium were observed. Swabs from oral lesions and tissue samples from necropsied animals were positive for HHV-1 by nested polymerase chain reaction for eight animals.
Assuntos
Callithrix , Surtos de Doenças/veterinária , Herpes Simples/veterinária , Herpesvirus Humano 1/isolamento & purificação , Doenças dos Macacos/epidemiologia , Animais , Animais Selvagens/virologia , Brasil/epidemiologia , Callithrix/virologia , Feminino , Herpes Simples/epidemiologia , Herpes Simples/patologia , Masculino , Doenças dos Macacos/patologiaRESUMO
The current study describes the clinical, gross, histopathologic, and immunohistochemical findings of a T-cell lymphoma in a captive porcupine (Coendou prehensilis), a species typically seen in the tropical forests of Brazil. At necropsy, extensive neoplastic involvement was observed in the cervical lymph nodes, with extension into the salivary gland. The spleen was mildly enlarged, and neoplastic nodules were grossly evident in the liver and right kidney. Histologically, sheets of large and markedly pleomorphic round cells were observed in the cervical lymph nodes, lung, liver, spleen, and kidney. The neoplastic cells were positive for cluster of differentiation (CD)3 and negative for CD79a by immunohistochemistry.
