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Search: authors:"Ernest T. Hawk"

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Genome-wide methylation analysis shows similar patterns in Barrett’s esophagus and esophageal adenocarcinoma

Barrett’s esophagus (BE) is a precursor of esophageal adenocarcinoma (EAC). To identify novel tumor suppressors involved in esophageal carcinogenesis and potential biomarkers for the malignant progression of BE, we performed a genome-wide methylation profiling of BE and EAC tissues. Using Illumina’s Infinium HumanMethylation27 BeadChip microarray, we examined the methylation status ...

Genetic variants within ultraconserved elements and susceptibility to right- and left-sided colorectal adenocarcinoma

We investigated whether single nucleotide polymorphisms within ultraconserved elements (UCEs) are associated with susceptibility to overall colorectal cancer (CRC) and susceptibility to tumor site-specific CRC. The study included 787 CRC patients and 551 healthy controls. The study comprised of a training set (520 cases and 341 controls) and a replication set (267 cases and 210 ...

MOLECULAR EPIDEMIOLOGY AND CANCER PREVENTION: Differential activity of aspirin, ketoprofen and sulindac as cancer chemopreventive agents in the mouse urinary bladder

In vivo studies were conducted to compare the activity of three non-steroidal anti-inflammatory drugs as inhibitors of urinary bladder carcinogenesis induced in B6D2F1 (BDF) mice by N-butyl-N-(4-hydroxybutyl)nitrosamine (OH-BBN). Mice received continuous dietary exposure to non-toxic doses of aspirin, sulindac or ketoprofen beginning 1 week prior to the first of eight weekly doses ...

Revised Bethesda Guidelines for Hereditary Nonpolyposis Colorectal Cancer (Lynch Syndrome) and Microsatellite Instability

Hereditary nonpolyposis colorectal cancer (HNPCC), also known as Lynch syndrome, is a common autosomal dominant syndrome characterized by early age at onset, neoplastic lesions, and microsatellite instability (MSI). Because cancers with MSI account for approximately 15% of all colorectal cancers and because of the need for a better understanding of the clinical and histologic ...