Research Article

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12/22/2015
Alcohol; Colorectal neoplasms; Cytochrome P-450 CYP1A1; Cytochrome P-450 CYP2E1; Genetic polymorphisms; Smoking

Polymorphisms in genes encoding P450 cytochrome enzymes may increase the risk of sporadic colorectal cancer (SCRC). Here we investigated the association between SCRC and CYP2E1 (PstI) and CYP1A1 (MspI) polymorphisms in a case-control study. Moreover, we sought to determine any possible associations between this disease and the sociodemographic factors. ... more

M.A. Proença; G.M.M. Fernandes; A. Russo; R.B. Lelis; J.G. Netinho; G.S. Cunrath; A.E. Silva; E.M. Goloni-Bertollo; E.C. Pavarino
2017 Jan 23
Alleles; Colorectal neoplasms; Genetic association studies; Genetic predisposition to disease; Genotype; Humans; Mexico; Odds Ratio; Polymorphism, Single Nucleotide; PPAR delta

PPARD encodes for peroxisome proliferator-activated receptor delta, which plays a significant role in controlling lipid metabolism, atherosclerosis, inflammation, cancer growth, progression, and apoptosis. Accumulated evidence suggests that the polymorphism rs2016520 in PPARD is associated with lipid metabolism, obesity, metabolic syndrome, and type 2 diabetes mellitus. The aim of this study ... more

M.A. Rosales-Reynoso; L.I. Wence-Chavez; A.R. Arredondo-Valdez; S. Dumois-Petersen; P. Barros-Núñez; M.P. Gallegos-Arreola; S.E. Flores-Martínez; J. Sánchez-Corona
2017 Feb 16
Cell differentiation; Colorectal neoplasms; Down-regulation; Female; Gene Expression Regulation, Neoplastic; HT29 Cells; Humans; Kruppel-Like Transcription Factors; Lymphatic metastasis; male; Prognosis; Survival analysis

Kruppel-like factors (KLFs) are a group of transcriptional regulators that have recently been identified to exhibit tumor-suppressive function against various gastrointestinal cancers. The present study aims to investigate the expression patterns and prognostic value of KLF-4 in colorectal cancers (CRCs). KLF-4 levels in CRC tissues were examined via immunohistochemistry analysis, real-time ... more

D.H. Xiu; Y. Chen; L. Liu; H.S. Yang; G.F. Liu
2017 Feb 16
Adult; Aged; Aged, 80 and over; Arabs; Colorectal neoplasms; Exons; Female; Humans; male; Middle Aged; Mutation; Mutation Rate; Prognosis; Proto-Oncogene Proteins p21(ras); Retrospective Studies; Saudi Arabia; Survival analysis; Young Adult

Mutations in codons 12/13 of K-ras exon 2 are associated with reduced benefit from anti-epidermal growth factor receptor antibody treatment for metastatic colorectal cancer (CRC). Here, we evaluated the frequency of K-ras mutations and their relationship with clinicopathological features and treatment outcomes in Saudi Arabian patients with CRC. The genetic status of K-ras was determined in ... more

J. Zekri; A. Al-Shehri; M. Mahrous; S. Al-Rehaily; T. Darwish; S. Bassi; E. Taani; A. Zahrani; S. Elsamany; J. Al-Maghrabi; B.B. Sadiq
2017 Mar 22
1,2-Dimethylhydrazine; Aberrant Crypt Foci; Animals; Anticarcinogenic Agents; Colorectal neoplasms; Dietary Supplements; DNA damage; Intestinal Mucosa; male; Mice; Probiotics; Yogurt

Colorectal cancer is a global public health issue. Studies have pointed to the protective effect of probiotics on colorectal carcinogenesis. Activia is a lacto probiotic product that is widely consumed all over the world and its beneficial properties are related, mainly, to the lineage of traditional yoghurt bacteria combined with a specific bacillus, DanRegularis, which gives the product a ... more

S.M.A. Limeiras; F.M. Ogo; L.A.L. Genez; C.M. Carreira; E.J.T. Oliveira; L.R. Pessatto; S.C. Neves; J.R. Pesarini; L.C. Schweich; R.A. Silva; W.B. Cantero; A.C.M.B. Antoniolli-Silva; R.J. Oliveira
2017 Mar 16
1,2-Dimethylhydrazine; Aberrant Crypt Foci; Animals; Antineoplastic Agents, Phytogenic; Asteraceae; Colorectal neoplasms; DNA damage; Ethanol; male; Mice; Micronucleus tests; Plant Extracts; Xenograft Model Antitumor Assays

The objective of this study was to evaluate the effect of Moquiniastrum polymorphum ssp floccosum ethanolic extract (MPEE) on 1,2 dimethylhydrazine (DMH)-induced colorectal carcinogenesis in mice. Forty-two male Swiss mice (Mus musculus) were subdivided into six groups (N = 7/group): negative control, DMH, MPEE, pre-treatment, simultaneous, and post-treatment. Results showed that MPEE has ... more

S.M.A. Limeiras; B.C. Oliveira; L.R. Pessatto; J.R. Pesarini; C.A.L. Kassuya; A.C.D. Monreal; W.B. Cantero; R. Antoniolli-Silva; A.C.M.B. Antoniolli-Silva; M.E.A. Stefanello; R.J. Oliveira
2017 Jun 29
Antineoplastic Agents; Apoptosis; Cell Line, Tumor; Cell proliferation; Colorectal neoplasms; Curcumin; Drug Resistance, Neoplasm; Heat-shock proteins; HSP27 Heat-Shock Proteins; Humans; Inhibitor of Apoptosis Proteins; Molecular chaperones; Proto-Oncogene Proteins c-bcl-2; Survivin

Since there are no studies on the reversal of multidrug resistance by curcumin in the human colorectal cancer cell line HCT-8/5-FU, our aim was to search for highly efficient reversal agents and investigate the underlying mechanisms of this reversal. The cytotoxic effects of curcumin and 5-FU on HCT-8 and HCT-8/5-FU cells and the reversal effects of 5-FU in combination with curcumin on HCT-8/5 ... more

Y.X. Fan; P. Abulimiti; H.L. Zhang; Y.K. Zhou; L. Zhu
09/28/2015
Cre recombinase; hFat-1; PGK-neomycin resistance; Porcine fetal fibroblasts; Transfection

The neomycin-resistance (neor) gene is widely used as a selectable marker in eukaryotic expression vectors; however, its expression often affects that of target genes. Cre recombinase recognizes LoxP sites, leading to site-specific recombination and deletion of DNA and RNA between two LoxP sites. In the present study, a humanized Fat-1 gene (hFat-1) was generated by DNA Works ... more

X.J. Han; H. Liang; T. Yun; Y.H. Zhao; M.L. Zhang; L.H. Zhao; R.F. Li; X.L. Li
08/03/2015
Esophageal cancer; Esophageal cancer cell lines; miR-21; Transfection

The aim of this study was to investigate the expression of miR-21 in esophageal cancer and the impact of miR-21 on apoptosis, invasion, and the expression of target genes in esophageal cancer cells. Fluorescence quantitative polymerase chain reaction analysis was used to detect the expression of miR-21 in human esophageal tissues, adjacent tissues, and an esophageal cancer cell line (TE- ... more

S.W. Wen; Y.F. Zhang; Y. Li1; Z.X. Liu; H.L. Lv; Z.H. Li; Y.Z. Xu; Y.G. Zhu; Z.Q. Tian
10/05/2015
BCL2 gene; Cell cycle; GES-1 cells; Human gastric epithelial cells; Transfection

We investigated the effects of BCL2 transfection on the cell cycle and proliferation of GES-1 cells. A pcDNA3-BCL2 plasmid was used to transfect GES-1 cell line human gastric epithelial cells. Clones were obtained by G418 screening. BCL2-positive cells were identified by fluorescence immunohistochemistry. The pcDNA3-BCL2 vectors carrying the NeoR gene were ... more

G.Y. Shi; L.L. Zhao; K. Zhang; H.X. Zhou; A.H. Liu; J. Li; G. Li; L.H. Zhu

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