Abstract Title:

Guaraná a richest caffeine food increase oxaliplatin sensitivity of colorectal HT-29 cells by apoptosis pathway modulation.

Abstract Source:

Anticancer Agents Med Chem. 2015 Dec 17. Epub 2015 Dec 17. PMID: 26673759

Abstract Author(s):

Francine Carla Cadoná, Alencar Kolinski Machado, Verônica Farina Azzolin, Fernanda Barbisan, Eduardo Bortoluzzi Dornelles, Werner Glanzner, Paulo Bayard Dias Gonçalves, Charles Elias Assmann, Euler Esteves Ribeiro, Ivana Beatrice Mânica da Cruz

Article Affiliation:

Francine Carla Cadoná


We investigated the in vitro effects of guaraná and its main metabolites (caffeine, theobromine and catechin) on cytotoxicity and cell proliferation on colorectal cancer (CRC) line HT-29 cells and on oxaliplatin sensitivity. The cells were exposed to different concentrations of guaraná extract with and without oxaliplatin. The concentrationsof bioactive molecules were also estimated considering their potential proportion on guaraná hydro-alcoholic extract. Apoptosis effect was analyzed by annexin V quantification using flow cytometry, while apoptosis pathway gene modulation (p53, Bax/Bcl-2 genes ratio, caspases 8 and 3) was determinedby qRT-PCR analysis. Cells exposed to guaraná at a concentration of 100 μg/mL presented a similar cytotoxic effect as HT-29 cells treated with oxaliplatin and did not affect the sensitivity of the drug. Guaraná presented cell antiproliferative effect and increased anti-proliferative oxaliplatinsensitivity at all concentrations tested here. Guaraná was able to induce apoptosis and up-regulate the p53 and Bax/Bcl-2 genes.

Print Options

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get Nature's Evidence-Based Pharmacy

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Download Now

500+ pages of Natural Medicine Alternatives and Information.

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2022 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.