RESUMO
Precisely locating tumors always proves to be difficult. To find a molecule that can specifically bind to tumor cells is the key. Recently, chlorotoxin (CTX) has been proved to be able to bind to many kinds of tumor cells. The CTX receptor on the cell surface has been demonstrated to be matrix metalloproteinase-2 (MMP-2). Many researchers have combined CTX with other molecules, including 131I, Cy5.5, iron oxide nanoparticles coated by polyethylene glycol (NP-PEG), and so on, and thus synthesized various types of probes that can be detected by gamma-camera, single photon emission computed tomography (SPECT) or magnetic resonance imaging (MRI). With these methods, the binding degree of CTX could be assessed. These studies demonstrated that CTX has a highly specific binding ability, high stability, and security. CTX could also inhibit or kill the tumor cells. A nonviral nanovector has been developed for gene therapy. As a result, it gradually develops into a new method of diagnosis and targeted therapy of tumors. This article reviews the current progress on CTX including the origin, chemical construction, the mechanism of binding with tumor cells, and the application to tumor imaging diagnosis and therapy.
Assuntos
Humanos , Neoplasias Encefálicas , Diagnóstico , Genética , Terapêutica , Carbocianinas , Metabolismo , Canais de Cloreto , Diagnóstico por Imagem , Métodos , Compostos Férricos , Metabolismo , Terapia Genética , Glioma , Diagnóstico , Genética , Terapêutica , Radioisótopos do Iodo , Imageamento por Ressonância Magnética , Metaloproteinase 2 da Matriz , Metabolismo , Nanopartículas , Invasividade Neoplásica , Metástase Neoplásica , Polietilenoglicóis , Química , Venenos de Escorpião , Química , Metabolismo , Tomografia Computadorizada de Emissão de Fóton ÚnicoRESUMO
Cancrum oris is a kind of gangrenous disease happening on the maxillofacial region. It is characterized by developing rapidly, high lethality and deforming rate. This article reported a case of maxillofacial deformity caused by cancrum oris, and discussed based on relevant literatures.
Assuntos
Humanos , Maxila , Patologia , NomaRESUMO
Sparganosis mansoni is a kind of parasitic infective disease, rarely seen in clinic. A case of sparganosis mansoni is reported in this article. The patient was a 25-year-old male, who came to Xiangya Hospital on September 26, 2007 because of a mass in the left cheek. A white tape-like body was found during the operation and recognized to be a live parasite. Enzyme linked immunosorbent assay of the serum revealed positivity against Spirometra mansoni. The final identification proved that the white tape-like body was Sparganum mansoni. The disease of this patient was caused by eating raw flesh of frogs infected with the Sparganum mansoni.