RESUMO
In the research community, resistance to apoptosis is often considered a hallmark of cancer. However, pathologists who diagnose cancer via microscope often see the opposite. Indeed, increased apoptosis and mitosis are usually observed simultaneously in cancerous lesions. Studies have shown that increased apoptosis is associated with cancer aggressiveness and poor clinical outcome. Furthermore, overexpression of Bcl-2, an antiapoptotic protein, is linked with better survival of cancer patients. Conversely, Bax, CD95, Caspase-3, and other apoptosis-inducing proteins have been found to promote carcinogenesis. This notion of the role of apoptosis in cancer is not new; cancer cells were found to be short-lived 88 years ago. Given these observations, resistance to apoptosis should not be considered a hallmark of cancer.
Assuntos
Animais , Humanos , Apoptose , Fisiologia , Biomarcadores Tumorais , Metabolismo , Carcinogênese , Metabolismo , Caspase 3 , Metabolismo , Linfoma de Células B , Metabolismo , Patologia , Neoplasias , Metabolismo , Patologia , Proteínas Proto-Oncogênicas c-bcl-2 , Metabolismo , Resultado do Tratamento , Proteína X Associada a bcl-2 , Metabolismo , Receptor fas , MetabolismoRESUMO
@#ObjectiveTo detect BAG1 expressions in digestive tract cancer by tissue microarray and to evaluate its clinical significance.MethodsTissue microarray of digestive tract cancer and normal tissues were analyzed by DAKO Envision system immunohistochemical staining for apoptosis related gene BAG-1 expression.ResultsThe positive rate of BAG-1 expression among esophagus cancer,gastric cancer and rectal cancer were higher than that of normal tissues respectively(P<0.01).ConclusionThere is an overexpression of BAG-1 in digestive tract cancer,which suggest that apoptosis related gene BAG-1 may be related to these cancer.
RESUMO
<p><b>BACKGROUND</b>To study the composition and significance of the inclusion bodies of human cytomegalovirus (HCMV).</p><p><b>METHODS</b>Microdissection of inclusion bodies, PCR and Southern blot were adopted to detect DNA, and immunohistochemistry method and catalyzed signal amplification (CSA) were used to detect the different antigens of HCMV.</p><p><b>RESULTS</b>The inclusion bodies of HCMV were separated from the tissue section of human salivary gland. The fragments amplified by PCR from these dissected inclusion bodies were confirmed to be the DNA of HCMV. With the immunohistochemical method CSA, the immediately early and early antigens of HCMV were detected with monoclonal antibodies DDG9/CCH2, while matrix protein AAC10 was negative in the inclusion bodies.</p><p><b>CONCLUSION</b>The ingredient of inclusion bodies of HCMV included the DNA and the antigens expressed in specific stage of the virus.</p>