Background/Aim: The evolution of gastric carcinogenesis remains largely unknown, as the regulatory mechanisms involved in the aggressiveness of gastric cancer are still poorly understood. Kinases are downstream modulators and effectors of various cell signaling cascades and play key roles in the development of neoplastic diseases. The objective of this study was to evaluate the expression of genes and proteins of the SRC family, including FYN, YES, BLK, FGR, LYN and SRC, in a model of intestinal gastric carcinogenesis generated by treating Cebus apella, a New World non-human primate, with N-methyl nitrosourea (MNU). Materials and Methods: mRNA expression of genes was measured by real-time reverse transcription quantitative PCR (RT-qPCR) and protein expression was measured by western blotting in six Cebus apella treated with N-methyl-nitrosourea (MNU) for about 2.5 years. Results: Elevated mRNA and protein expression mainly of the SRC and LYN kinases was observed. Their expression was gradually increasing as non-atrophic gastritis was evolving to gastric cancer. Conclusion: SRC family kinases play a key role in tumor progression and metastasis and may be a promising target for the treatment of gastric cancer.
As plantas medicinais vem sendo uma solução considerada nos problemas de saúde pública. A Organização Mundial de Saúde (OMS) ressalta que até 80% da população de países em desenvolvimento confiam na Medicina Complementar ou Alternativa (MAC) em cuidados iniciais a saúde. Dessa forma, A pesquisa tem como objetivo descrever a importância do uso de fitoterápicos como tratamento alternativo e complementar na atenção básica. O presente estudo trata-se de uma revisão integrativa da literatura com teor descritivo e de natureza qualitativa. Os dados para esse estudo foram obtidos nas bases de dados: Biblioteca Virtual em Saúde (BVS), Scielo, Lilacs, medline e no diretório Google Acadêmico. Foram considerados estudos originais disponíveis e publicados na íntegra que abordassem a questão norteadora, entre os anos de 2000 e 2020; nos idiomas português, inglês ou espanhol. Resultados: Visando uma maior segurança e maior controle na utilização de medicamentos fitoterápicos, a ANVISA (Agência Nacional de Vigilância Sanitária), dispõe de várias resoluções que regulamentam a obtenção, qualidade e distribuição (venda) do fitoterápico. O Ministério da Saúde (MS) disponibiliza a utilização de 12 medicamentos fitoterápicos na rede pública de saúde e estes medicamentos estão diretamente relacionados ao tratamento de doenças na atenção básica como: hipercolesterolemia leve a moderada, queimaduras, inflamação, infecções, obstipação intestinal eventual, broncoespasmo e broncoconstrição. Vários estudos comprovam os benefícios dos fitoterápicos, principalmente de forma complementar para promoção e recuperação da saúde da população.
Https://doi.org/10.18632/oncotarget.28034 Gyselle Ribeiro de Carvalho Oliveira, Carla de Castro Sant’ Anna, Letícia Martins Lamarão, Adriana Costa Guimarães, Carlos Machado da Rocha, Marcelo de...
1 October 2022 in Anti-Cancer Agents in Medicinal Chemistry
Gastric cancer (GC) is the fifth most common type of tumor and the third leading cause of cancer death worldwide. The evolution of gastric carcinogenesis is still poorly understood and, for this reason, preclinical research protocols were established that included the development of gastric cancer cell lines and the establishment of models of gastric carcinogenesis in non-human primates such as Sapajus apella. A comprehensive literature search was performed in relevant databases such as PubMed, ResearchGate, and Google Scholar to identify studies related to the topic. After an in-depth study of these reports, significant data were collected and compiled under appropriate headings. The main result of the studies carried out by the group on GC is the demonstration of the MYC gene overexpression as a common phenomenon in stomach carcinogenesis. Furthermore, we revealed that reducing the expression of the CDC25B gene, regulated by the MYC protein, is a therapeutic strategy against stomach tumors. This review article reveals preclinical evidence that treatment with menadione in experimental models of gastric tumorigenesis, in vivo and in vitro, inhibits the action of the phosphatase CDC25B and, consequently, prevents cell proliferation, invasion, and migration.