Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 5
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Absence of TERT promoter mutations in colorectal precursor lesions and cancer Genet. Mol. Biol.
Cruvinel-Carloni,Adriana; Yamane,Letícia; Scapulatempo-Neto,Cristovam; Guimarães,Denise; Reis,Rui Manuel.
Abstract Hotspot mutations (c.-124bp G > A and c.-146bp G > A) in the promoter region of the TERT gene have been recently described in several types of solid tumors, including glioma, bladder, thyroid, liver and skin neoplasms. However, knowledge with respect to colorectal precursor lesions and cancer is scarce. In the present study we aimed to determine the frequency of hotspot TERT promoter mutations in 145 Brazilian patients, including 103 subjects with precursor lesions and 42 with colorectal carcinomas, and we associated the presence of such mutations with the patients clinical-pathological features. The mutation analysis was conclusive in 123 cases, and none of the precursor and colorectal carcinoma cases showed TERT promoter mutations. We...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colorectal carcinoma; TERT promoter mutations; Precursor lesions.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000100082
Imagem não selecionada

Imprime registro no formato completo
Evaluation of an anti-carcinoembryonic monoclonal antibody suitable for immunoscintigraphy BJMBR
Moraes,D.W.; Lima,E.N.P.; Prado,I.B.; Carneiro,C.R.W..
An anti-carcinoembryonic antigen (CEA) monoclonal antibody (mAb 6D1.1) was evaluated in vitro and in vivo to determine its suitability as a tracer for immunoscintigraphy of colorectal carcinomas. Determination of mAb affinity for CEA showed a constant of association of 0.63 ± 0.11 x 109 M-1. Binding of technetium-99m (99mTc)-6D1.1, labeled by a direct method, to human cultured lineages was highly specific. Binding to only CEA-positive LS-174T cells resulted in a saturable curve inhibited by pre-incubation with unlabeled mAb. No binding at all was observed for the human lineages MeWo (melanoma) or ZR75-30 (breast carcinoma), neither of them expressing CEA cells. Intravenous injection of 99mTc-6D1.1 into nude mice xenografted with human LS-174T tumors...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Monoclonal antibody; Carcinoembryonic antigen; Colorectal carcinoma; Immunoscintigraphy; Technetium-99m.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000800006
Imagem não selecionada

Imprime registro no formato completo
Inhibition of STAT3 by RNA interference suppresses angiogenesis in colorectal carcinoma BJMBR
Qian,W.F.; Guan,W.X.; Gao,Y.; Tan,J.F.; Qiao,Z.M.; Huang,H.; Xia,C.L..
In order to investigate signal transduction and activation of transcription 3 (STAT3) signaling on angiogenesis in colorectal carcinoma (CRC) after inhibiting STAT3 expression, we constructed the HT-29-shSTAT3 cell line by lentivirus-mediated RNAi. Cell growth was assessed with MTT and the cell cycle distribution by flow cytometry. CRC nude mouse models were established and tumor growth was monitored periodically. On day 30, all mice were killed and tumor tissues were removed. Microvessel density (MVD) was determined according to CD34-positive staining. The expression of vascular endothelial growth factor A (VEGFA), matrix metalloproteinase-2 (MMP2) and basic fibroblast growth factor (FGF2) was monitored by quantitative real-time PCR and Western blot...
Tipo: Info:eu-repo/semantics/article Palavras-chave: STAT3; RNA interference; Colorectal carcinoma; Angiogenesis; VEGFA; MMP2; FGF2.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001200005
Imagem não selecionada

Imprime registro no formato completo
Irinotecan and oxaliplatin: an overview of the novel chemotherapeutic options for the treatment of advanced colorectal cancer BJMBR
Grivicich,I.; Mans,D.R.A.; Peters,G.J.; Schwartsmann,G..
Colorectal cancer is one of the most frequent malignancies in humans and an important cause of cancer death. Metastatic colorectal cancer remains incurable with available systemic therapeutic options. The most active cytotoxic drug against this malignancy, the antimetabolite 5-fluorouracil, was developed more than forty years ago, and as a single agent produces responses in only 10 to 15% of patients which in general last less than one year. Efforts to ameliorate these poor results resulted in the 5-fluorouracil/leucovorin combination, which enhances response rates about two-fold, without, however, significantly improving survival rates. The recent emergence of a handful of new 5-fluorouracil analogues and folate antagonists, as well as the topoisomerase I...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colorectal carcinoma; 5-fluorouracil; Irinotecan; Oxaliplatin.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000900001
Imagem não selecionada

Imprime registro no formato completo
Utilization of microsatellites for the analysis of genomic alterations in colorectal cancers in Brazil BJMBR
Fuzikawa,A.K.; Haddad,L.A.; da-Cunha-Melo,J.R.; Brasileiro-Filho,G.; Pena,S.D.J..
Two different pathogenetic mechanisms are proposed for colorectal cancers. One, the so-called "classic pathway", is the most common and depends on multiple additive mutational events (germline and/or somatic) in tumor suppressor genes and oncogenes, frequently involving chromosomal deletions in key genomic regions. Methodologically this pathway is recognizable by the phenomenon of loss of heterozygosity. On the other hand, the "mutator pathway" depends on early mutational loss of the mismatch repair system (germline and/or somatic) leading to accelerated accumulation of gene mutations in critical target genes and progression to malignancy. Methodologically this second pathway is recognizable by the phenomenon of microsatellite instability. The distinction...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Polymerase chain reaction; Colorectal carcinoma; Microsatellite; P53; DCC; Microsatellite instability.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000800001
Registros recuperados: 5
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional