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Resveratrol is a phytochemical with chemopreventive activity in preclinical rodent models of colorectal carcinogenesis. Antiproliferation is one of the many chemopreventive modes of action it has been shown to engage in. Concentrations of resveratrol, which can be achieved in human tissues after p.o. administration, have not yet been defined. The purpose of this study was to measure concentrations of resveratrol and its metabolites in the colorectal tissue of humans who ingested resveratrol. Twenty patients with histologically confirmed colorectal cancer consumed eight daily doses of resveratrol at 0.5 or 1.0 g before surgical resection. Resveratrol was found to be well tolerated. Normal and malignant biopsy tissue samples were obtained before dosing. Parent compound plus its metabolites resveratrol-3-O-glucuronide, resveratrol-4'-O-glucuronide, resveratrol-3-O-sulfate, resveratrol-4'-O-sulfate, resveratrol sulfate glucuronide, and resveratrol disulfate were identified by high-performance liquid chromatography (HPLC) with UV or mass spectrometric detection in colorectal resection tissue. Quantitation was achieved by HPLC/UV. Cell proliferation, as reflected by Ki-67 staining, was compared in preintervention and postintervention tissue samples. Resveratrol and resveratrol-3-O-glucuronide were recovered from tissues at maximal mean concentrations of 674 and 86.0 nmol/g, respectively. Levels of resveratrol and its metabolites were consistently higher in tissues originating in the right side of the colon compared with the left. Consumption of resveratrol reduced tumor cell proliferation by 5% (P = 0.05). The results suggest that daily p.o. doses of resveratrol at 0.5 or 1.0 g produce levels in the human gastrointestinal tract of an order of magnitude sufficient to elicit anticarcinogenic effects. Resveratrol merits further clinical evaluation as a potential colorectal cancer chemopreventive agent.
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http://dx.doi.org/10.1158/0008-5472.CAN-10-2027 | DOI Listing |
Discov Nano
December 2024
Department of Surgery, Level 7, Bridge E, Faculty of Health Sciences, Steve Biko Academic Hospital, University of Pretoria, Private Bag X323, Arcadia, 0007, South Africa.
Glioblastoma (GBM) is an aggressive brain tumor characterized by cellular and molecular diversity. This diversity presents significant challenges for treatment and leads to poor prognosis. Surgery remains the primary treatment of choice for GBMs, but it often results in tumor recurrence due to complex interactions between GBM cells and the peritumoral brain zone.
View Article and Find Full Text PDFBioorg Chem
December 2024
Department of Pharmaceutics, College of Pharmacy, King Khalid University, Abha 62529, Saudi Arabia.
Red grapes contain resveratrol (Resv), a polyphenol with anti-inflammatory, anti-diabetic, and anticancer properties. In this study, in silico molecular docking was used to assess the binding affinity of Resv to target proteins. Resv was encapsulated in PEGylated liposomes (LNPs) using Phospholipon 90G, cholesterol, and DSPE-mPEG.
View Article and Find Full Text PDFAdv Biomed Res
November 2024
Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
Background: Non-alcoholic fatty liver disease is related to lipid accumulation and inflammation. Considering the role of lipin-1 and lipin-2 in fat homeostasis and inflammation, this study aimed to explore the effect of galbanic acid (Gal) and resveratrol (RSV) on alterations in the gene expression levels and protein abundance of lipin-1 and lipin-2 in HepG2 liver cells lipid-enriched with palmitate (Pal).
Materials And Methods: HepG2 cells were subjected to different amounts of Gal and RSV for 24 hours in the presence of Pal to induce lipid accumulation.
Brain Res
December 2024
Molecular and Cellular Biology Laboratory, Department of Pharmacology, NIIMS Institute of Pharmacy, NIIMS University Jaipur, Rajasthan, India. Electronic address:
Objective: The study aims to explore Resveratrol (RES) as a potential therapeutic agent for Glioblastoma multiforme (GBM), a challenging brain cancer. RES, a polyphenolic compound with known benefits in various diseases including cancer, has shown promise in inhibiting glioma progression through its effects on the AKT signaling pathways. However, its limited ability to cross the blood-brain barrier restricts its clinical application in GBM treatment.
View Article and Find Full Text PDFNeurosci Lett
December 2024
Department of Anesthesiology, The Affiliated Yixing Hospital of Jiangsu University, Yixing, Jiangsu, China. Electronic address:
Postoperative cognitive dysfunction (POCD) is a common cognitive challenge faced by older adults. One of the key contributors to the development of POCD is neuroinflammation induced by microglia. Resveratrol has emerged as a promising candidate for the prevention of cognitive decline.
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