Publications by authors named "S Ramirez-Rivera"
Genotyping of Helicobacter pylori CagA/CagE strains in gastric mucosa and its association with gastric illness.
Diagn Microbiol Infect Dis
October 2023
The aim of this work was associate the presence of the virulence factors of Helicobacter pylori, cagA/cagE, with gastric illness. We found evidence that indicate the contribution of these genotypes with the severity of gastric lesions in patients infected, principally in histological subtypes as atrophic gastritis, and metaplasia.
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- Gastric cancer is a prevalent and deadly disease, with increased expression of purinergic P2Y receptors found in cancer samples compared to healthy tissue.
- Research focused on gastric adenocarcinoma cell lines (AGS, MKN-45, MKN-74) showed distinct purinergic signaling compared to a healthy cell line (GES-1), revealing significant roles for purinergic receptors in calcium signaling and cell proliferation.
- Findings indicated that ATP and UTP affect cell proliferation differently in cancerous and non-cancerous cells, with purinergic antagonists potentially altering basal proliferation in cancer cells, highlighting the complex role of nucleotides as signaling molecules in gastric cancer.
Annona cherimola is a tree belonging to the family Annonacea, whose fruit (cherimoya) is very desirable, but its seeds are considered waste. Present in these seeds are compounds that have been described as selective antiproliferative agents for cancer cells. The aim of this study was to evaluate the antiproliferative activity of ethanol macerate extract (EMCHS) obtained from A.
View Article and Find Full Text PDFMusic Is Capable of Inducing Changes in Gene Expression in Gastric Cancer Cells.
J Gastrointest Cancer
March 2019
Purpose: Music has recognized beneficial effects on cancer patients; however, very little is known about the molecular processes which produce these benefits. The aim of this work was to evaluate the effect of music on proliferation and gene expression in gastric cancer cells.
Methods: AGS gastric cancer cells were exposed to metal and classical music, and subsequently cell proliferation and expression of genes associated with apoptosis and cell-cycle control were evaluated.
Aims: Ruthenium-based compounds exhibit critical biochemical properties making them suitable for diverse pharmacological applications. The aim of this work was to study the anticancer effects of three ruthenium complexes on a human gastric cancer cell line.
Main Methods: We synthetized three [Ru(η-anethole)(en)X]PF complexes, where (en) is ethylenediamine and X is Cl (1), Br (2) or I (3), which were then evaluated by MTT assay, RT-qPCR and flow cytometry on the human gastric cancer cell line AGS.