Supplementation of p-coumaric acid exhibits chemopreventive effect via induction of Nrf2 in a short-term preclinical model of colon cancer

Suppression of colorectal cancer by means of chemoprevention is gaining great attention owing to promising outcomes with less adverse effects in preclinical and clinical trials. The present study aims to explore the mechanism of chemoprevention by p-coumaric acid (p-CA) in a short-term preclinical model of colon cancer. 1,2-dimethylhydrazine-administered rats supplemented with p-CA showed downregulation of the expression of colonic proteins, namely, cyclin B1, cdc2 and mdm2, which regulate cell cycle, and immediate early response genes, namely, c-fos, c-jun and c-myc, which regulate cell proliferation. Apoptosis induction was also observed in the colon of p-CA-supplemented rats as assessed by the Bax/Bcl-2 ratio. Immunohistochemistry, immunoblotting and real-time polymerase chain reaction analysis revealed that supplementation of p-CA improved the in-vivo detoxification potential by modulating the cytoplasmic-to-nuclear ratio of nuclear factor erythroid 2-related factor 2, favouring the induction of genes responsible for cytoprotection and detoxification. The outcome of these findings suggests that p-CA inhibited polyp formation by improving the process of detoxification and apoptosis in the colon of 1,2-dimethylhydrazine-administered rats.
Source: European Journal of Cancer Prevention - Category: Cancer & Oncology Tags: Research Papers: Gastrointestinal Cancer Source Type: research

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ConclusionPatients with attenuated familial adenomatous polyposis (
Source: Cancer Genetics - Category: Cancer & Oncology Source Type: research
Spoiler: Medically graphic image of colon A 17-year-old male is referred for colorectal cancer screening following his father’s diagnosis of metastatic colorectal cancer at the age of 47. He is asymptomatic and otherwise well. Colonoscopy reveals hundreds of adenomatous polyps throughout the colon, and he eventually undergoes a total proctocolectomy with ileal pouch anal anastomosis. Which of the following extracolonic... What malignancy is this patient at risk for?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Educational Quizzes and Case Studies Forum Source Type: forums
AbstractPurpose of reviewTo present the current understanding of the diagnosis, management, and potential genetic causes of serrated polyposis syndrome.Recent findingsThe clinical criteria for serrated polyposis syndrome was recently updated and now includes individuals with five or more serrated polyps proximal to the rectum that are 5 mm in size or greater and at least two that are 10 mm in size of greater as well as individuals with 20 or more serrated polyps throughout the colon with at least five proximal to the rectum. There is a significant risk for colon cancer in first-degree relatives of individuals with serrated...
Source: Current Treatment Options in Gastroenterology - Category: Gastroenterology Source Type: research
CONCLUSION: Our study provides the first identification of a panel of three plasma circRNAs that could serve as a novel and independent diagnostic biomarker for CRC. PMID: 31669510 [PubMed - as supplied by publisher]
Source: Clinical Biochemistry - Category: Biochemistry Authors: Tags: Clin Biochem Source Type: research
Contributors : Li Jingyun ; Rui WangSeries Type : Expression profiling by high throughput sequencing ; OtherOrganism : Homo sapiensPatients with germline APC mutations are recognized by hundreds of adenoma polyps in colon, which will give rise to adenocarcinoma inevitably. Over 700 germline APC mutations have been reported to be the leading cause of adenomatous polyposis. However, the underlying mechanism of APC mutation triggered colonic cancer remains mysterious. Here, using a modified STRT-seq protocol, we analyzed over 4000 single cells from the four matching adenomatous polyposis, adenocarcinoma, adjacent normal colon...
Source: GEO: Gene Expression Omnibus - Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Other Homo sapiens Source Type: research
In this study, ApcMin/+ intestinal adenoma mice were generated on TLR4-sufficient and TLR4-deficient backgrounds to investigate the carcinogenic effect of TLR4 in mouse gut by comparing mice survival, peripheral blood cells, bone marrow haematopoietic precursor cells and numbers of polyps in the guts of ApcMin/+ WT and ApcMin/+ TLR4-/- mice. The results revealed that TLR4 had a critical role in promoting spontaneous intestinal tumorigenesis. Significant differential genes were screened out by the high-throughput RNA-Seq method. After combining these results with KEGG enrichment data, it was determined that TLR4 might promo...
Source: J Cell Mol Med - Category: Molecular Biology Authors: Tags: J Cell Mol Med Source Type: research
ConclusionThe fluorescent marking clips were easily placed and recognized with a fluorescent laparoscope. This method is expected to be safe and risks of accidental puncture related to tattoo marking method can be reduced or almost eliminated.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
ConclusionThe fusion fascia of Fredet is useful to achieve CME and D3-L in right colon cancers with reduced risk of intraoperative complications. This structure is particularly suitable for minimally invasive surgery; therefore, we encourage awareness of the fascia of Fredet by colorectal surgeons.
Source: Surgical Endoscopy - Category: Surgery Source Type: research
Conclusions: We suggested that GB polyps are associated with proximal colon polyps. Colonoscopy may be a more effective strategy for screening proximal precancerous lesions among patients with GB polyps. The association between GB disease and colon polyps demands further prospective investigation. PMID: 31611916 [PubMed]
Source: Gastroenterology Research and Practice - Category: Gastroenterology Tags: Gastroenterol Res Pract Source Type: research
Colon polyp surveillance now accounts for 25% of all colonoscopies performed. The evidence that colonoscopy surveillance reduces colorectal cancer (CRC) incidence or mortality is weak. The biology of the baseline lesions and quality of the baseline exam are two primary factors contributing to post-colonoscopy CRC. Prior recommendations for surveillance were based largely on the likelihood that patients with adenomas would develop advanced adenomas, a surrogate for CRC. There is now evidence that baseline colonoscopy findings are strongly associated with the risk of incidence or death from CRC.
Source: Gastroenterology - Category: Gastroenterology Authors: Source Type: research
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