Integrated genetic and epigenetic analysis of cancer-related genes in non-ampullary duodenal adenomas and intramucosal adenocarcinomas.

The molecular and clinical characteristics of non-ampullary duodenal adenomas and intramucosal adenocarcinomas are not fully understood because they are rare. To clarify these characteristics, we performed genetic and epigenetic analysis of cancer-related genes in these lesions. One hundred and seven non-ampullary duodenal adenomas and intramucosal adenocarcinomas, including 100 small intestinal-type tumors (90 adenomas and 10 intramucosal adenocarcinomas) and 7 gastric-type tumors (2 pyloric gland adenomas and 5 intramucosal adenocarcinomas), were investigated.

[Onset of Syndrome of Inappropriate Secretion of Antidiuretic Hormone in a Gastric Cancer Patient on SOX Treatment].

A 78-year-old man with advanced gastric cancer was treated with S-1 and oxaliplatin chemotherapy. He developed hiccups and nausea, and was diagnosed with hyponatremia (serum Na: 120 mEq/L) on day 6 of the first treatment course. Because of his increased urinary Na excretion and relatively high ADH values, he was subsequently diagnosed with chemotherapy-induced syndrome of inappropriate secretion of antidiuretic hormone.

Use of transoral endoscopy for pharyngeal examination: cross-sectional analysis.

Background And Aim: Transoral endoscopy with narrow band imaging (NBI) is useful for identifying early-stage head and neck cancer. However, the screening capability of transoral upper gastrointestinal endoscopy has not yet been systematically evaluated. We evaluated the usefulness of transoral upper gastrointestinal endoscopy for pharyngeal examination.

Detection of pharyngeal cancer in the overall population undergoing upper GI endoscopy by using narrow-band imaging: a single-center experience, 2009-2012.

Background: Nonmagnifying observation by using narrow-band imaging (NBI) is useful for detecting pharyngeal lesions. Magnifying observation by using NBI can distinguish between cancerous and noncancerous lesions and is therefore useful for the early detection of pharyngeal cancer.

Objective: To evaluate the usefulness of observation of the pharynx by using NBI in the overall population undergoing upper GI endoscopy.

Regulation of recombination between gtfB/gtfC genes in Streptococcus mutans by recombinase A.

Streptococcus mutans produces 3 types of glucosyltransferases (GTFs), whose cooperative action is essential for cellular adhesion. The recombinase A (RecA) protein is required for homologous recombination. In our previous study, we isolated several strains with a smooth colony morphology and low GTF activity, characteristics speculated to be derived from the GTF fusions.

[A case of disseminated carcinomatosis of bone marrow treated by S-1 and cisplatin after distal gastrectomy for early gastric cancer].

Patients with bone metastasis originating from gastric cancer experience complications from DIC. They are treated with anticoagulation therapy or platelet transfusion, but their prognosis is poor. Our case was a 50-year-old male who had undergone distal gastrectomy for early gastric cancer[pT1a(M)N0M0, pStage I a]ten years previously.

Can magnifying endoscopy with narrow band imaging be useful for low grade adenomas in preoperative biopsy specimens?

Background: In biopsy specimens with low grade adenomas, it is often difficult to identify the presence of high grade adenomas or early carcinomas and low grade adenomas preoperatively, and clear guidelines have not yet been defined for the applicability of endoscopic treatment to low grade adenomas identified in biopsy specimens.

Methods: We aimed to clarify the usefulness of magnifying endoscopy with narrow band imaging (NBI) compared to conventional white light endoscopy for diagnosing actual high grade adenomas or early carcinomas with low grade adenomas, using the VS (microvascular pattern [V] and microsurface pattern [S]) classification for low grade adenomas in biopsy specimens. The study cohort consisted of 135 patients who were diagnosed with low grade adenomas in preoperative biopsy specimens and received endoscopic submucosal dissection.

Isolation and characterization of Streptococcus mutans in heart valve and dental plaque specimens from a patient with infective endocarditis.

Streptococcus mutans, known to be an aetiologic agent of dental caries, also causes infective endocarditis (IE), although a comparison of isolates from the oral cavity and infected heart valve of the same patient has not been reported. In the present study, infected heart valve and dental plaque samples from a patient with IE were analysed. Broad-range PCR with DNA sequencing revealed that 50 clones from the dental plaque isolates were composed of oral streptococci and periodontopathic bacteria, whereas only Streptococcus mutans was detected in 50 clones from the heart valve.