2002
DOI: 10.1590/s0004-28032002000400009
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Fatores genéticos e ambientais envolvidos na carciogênese gástrica

Abstract: These accumulated genetic changes in carcinomas provide evidences for the stepwise mode of gastric carcinogenesis through the accumulation of a series of genetic alterations.

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Cited by 16 publications
(13 citation statements)
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“…Concerning to Lauren histological type, against expectations the diffuse type was predominant, 1,[26][27][28] no statistical difference between Lauren histological type and p16 expression in the two thresholds studied was found as previously reported, 12 although no agreement on this issue have been reached 7,27 . Although it is known that tumours with p16 loss tend to have a higher metastatic potential immunohistochemistry to p16 in lymph nodes was not carried out in this study, since overall p16 expression is much lower in metastatic lymph nodes than in primary lesion 6 .…”
Section: Results Results Results Resultssupporting
confidence: 46%
“…Concerning to Lauren histological type, against expectations the diffuse type was predominant, 1,[26][27][28] no statistical difference between Lauren histological type and p16 expression in the two thresholds studied was found as previously reported, 12 although no agreement on this issue have been reached 7,27 . Although it is known that tumours with p16 loss tend to have a higher metastatic potential immunohistochemistry to p16 in lymph nodes was not carried out in this study, since overall p16 expression is much lower in metastatic lymph nodes than in primary lesion 6 .…”
Section: Results Results Results Resultssupporting
confidence: 46%
“…A neoplasia gástrica se encontra relacionada com a predisposição genética, como alterações no braço curto do cromossomo 7, os genes TP53 e TP73, e outras modificações que levam a desregulação do ciclo celular [11]. Possui forte relação principalmente com hábitos alimentares como ingestão de elevado teor de sal e aditivos alimentares, como nitrito, que ao ser metabolizado leva a formação de radicais livres que podem resultar em lesão e inflamação da mucosa gástrica [12].…”
Section: Introductionunclassified
“…Outro fator de risco para o desenvolvimento dessa patologia é a infecção por Helicobacter pylori. Alguns estudos salientam o papel desta bactéria no desenvolvimento do processo inflamatório com consequente indução de danos oxidativos, que podem estar relacionados à condições pré-neoplásicas [11].…”
Section: Introductionunclassified
“…The main bacteria involved would be Escherichia coli and Pseudomonas, which proliferation would be stimulated by the state of prolonged hypochloridria. Furthermore, these nitrous compounds and their metabolites are inhibited by vitamin C and other antioxidants agents that protect the DNA 4,21,23,27,29 . According to Muller et al (2007) the chronic atrophic gastritis, a potential late state of gastric infection by Helicobacter pylori (Hp), raises the risk of gastric cancer development up to six times 24 .…”
Section: Introductionmentioning
confidence: 99%