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| Meça,K.K.O.L.; Martins,A.S.; Del Puerto,H.L; Vasconcelos,A.C.. |
| Apoptose e seus mecanismos reguladores são eventos fisiológicos cruciais para a manutenção da homeostase placentária, e o desequilíbrio desses processos pode comprometer a função placentária e, consequentemente, o sucesso da gravidez. Neste estudo, investigou-se a apoptose utilizando-se histomorfometria em lâminas coradas em HE e submetidas à reação de TUNEL. Além disso, avaliou-se a expressão de Bcl-2 e das caspases 8 e 3, pela reação de polimerase em cadeia em tempo real, em placentas saudáveis em diferentes estádios de gestação. Amostras de placentônios de vacas com quatro, seis e nove meses de gestação foram colhidas e processadas. O índice apoptótico aumentou progressivamente com o avanço da gestação. Tanto o Bcl-2 quanto as caspases 3 e 8 foram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovino; Apoptose; Placenta; Caspases; Bcl-2. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000200003 |
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| Sternberg,C.; Benchimol,M.; Linden,R.. |
| We examined the degeneration of post-mitotic ganglion cells in ex-vivo neonatal retinal explants following axon damage. Ultrastructural features of both apoptosis and autophagy were detected. Degenerating cells reacted with antibodies specific for activated caspase-3 or -9, consistent with the presence of caspase activity. Furthermore, peptidic inhibitors of caspase-9, -6 or -3 prevented cell death (100 µM Ac-LEDH-CHO, 50 µM Ac-VEID-CHO and 10 µM Z-DEVD-fmk, respectively). Interestingly, inhibition of autophagy by 7-10 mM 3-methyl-adenine increased the rate of cell death. Immunohistochemistry data, caspase activation and caspase inhibition data suggest that axotomy of neonatal retinal ganglion cells triggers the intrinsic apoptotic pathway, which, in turn,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apoptosis; Autophagy; Caspases; Retina; Central nervous system. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001000005 |
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| Belizário,J.E.; Alves,J.; Occhiucci,J.M.; Garay-Malpartida,M.; Sesso,A.. |
| Mitochondria increase their outer and inner membrane permeability to solutes, protons and metabolites in response to a variety of extrinsic and intrinsic signaling events. The maintenance of cellular and intraorganelle ionic homeostasis, particularly for Ca2+, can determine cell survival or death. Mitochondrial death decision is centered on two processes: inner membrane permeabilization, such as that promoted by the mitochondrial permeability transition pore, formed across inner membranes when Ca2+ reaches a critical threshold, and mitochondrial outer membrane permeabilization, in which the pro-apoptotic proteins BID, BAX, and BAK play active roles. Membrane permeabilization leads to the release of apoptogenic proteins: cytochrome c, apoptosis-inducing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mitochondrial outer membrane permeabilization; Permeability transition pore; Cytochrome c; Reactive oxygen species; Caspases; BCL-2. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000800001 |
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| Tian,Meili; Yang,Shuang; Yan,Xinpeng. |
| Icariin has been reported to possess high anticancer activity. Colon carcinoma is one of the leading causes of cancer-related mortality worldwide. Here, the anticancer activity of icariin against HCT116 colon carcinoma cells and the possible underlying mechanism were studied. The trypan blue staining assay, wound healing assay, clonogenic assay, CCK-8 assay, and Annexin V-FITC/PI double staining method were carried out to determine the changes of HCT116 cell growth and migration. mRNA and protein expressions were determined by quantitative real-time PCR and western blot, respectively. Moreover, small interfering RNA (siRNA) plasmid was used to examine the role of p53 in icariin-induced apoptosis in HCT116 cells. Icariin significantly suppressed colon... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Colon carcinoma; Icariin; Mechanism; P53; DNA damage; Caspases. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018001000605 |
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