Shoichi Saito

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Unique pillar-like colonies of aquatic mosses, rising from cyanobacterial and algal mats, have been discovered in some freshwater lakes in the vicinity of Syowa Station (69°00′S, 39°35′E), continental Antarctica. These moss pillars are about 40 cm in diameter and up to 60 cm high and occur at the lake bottoms mainly between 3 and 5 m depth. The primary(More)
Colorectal endoscopic submucosal dissection (ESD) has become common in recent years. Suitable lesions for endoscopic treatment include not only early colorectal carcinomas but also many types of precarcinomatous adenomas. It is important to establish practical guidelines in which the preoperative diagnosis of colorectal neoplasia and the selection of(More)
Histone deacetylase (HDAC) inhibitors cause growth arrest at the G1 and/or G2/M phases, and induce differentiation and/or apoptosis in a wide variety of tumour cells. The growth arrest at G1 phase by HDAC inhibitors is thought to be highly dependent on the upregulation of p21/WAF1, but the precise mechanism by which HDAC inhibitors cause G2/M arrest or(More)
OBJECTIVE To clarify of the features of sessile serrated adenoma/polyp (SSA/P) observed with image-enhanced endoscopy using immunohistochemical staining. MATERIALS AND METHODS Twenty-five hyperplastic polyps (HP) and 46 SSA/P were studied with autofluorescence imaging (AFI) and magnifying endoscopy with narrow-band imaging (ME-NBI). AFI color change,(More)
The aim of this pilot study was to compare the performance and safety of the newly developed sodium phosphate (NaP) tablet (with and without laxatives) and polyethylene glycol (PEG), as bowel-cleansing regimens prior to colonoscopy. A total of 35 patients were randomized to one of the following three groups: NaP + laxative, NaP, or PEG. Quality of colon(More)
Cyclopentenone prostaglandins (PGs) of the J series, which are produced by dehydration of PGD(2), have been reported to induce apoptosis in various cell lines. One of these cyclopentenone PGs, 15-deoxy-Delta(12,14)-prostaglandin J(2) (15-d-PGJ(2)), is the most potent inducer of apoptosis in the series, but the signaling pathways by which it induces(More)
Introduction. This study examined whether magnifying endoscopy with NBI observation (ME-NBI) could be useful selecting the appropriate treatment for submucosal invasive cancer (SM cancer). Patients and Methods. We analyzed 515 cases of colon tumors excised endoscopically or surgically. We classified capillary network pattern into four types according to the(More)
Many clinical studies on narrow-band imaging (NBI) magnifying endoscopy classifications advocated so far in Japan (Sano, Hiroshima, Showa, and Jikei classifications) have reported the usefulness of NBI magnifying endoscopy for qualitative and quantitative diagnosis of colorectal lesions. However, discussions at professional meetings have raised issues such(More)
Hadoop, consists of Hadoop MapReduce and Hadoop Distributed File System (HDFS), is a platform for large scale data and processing. Distributed processing has become common as the number of data has been increasing rapidly worldwide and the scale of processes has become larger, so that Hadoop has attracted many cloud computing enterprises and technology(More)
An immense amount of information is processed on the Internet due to its spread, increasing the severity of such problems as the disclosure of personal information; privacy protection is required. Research to protect anonymity has become crucial. Anonymous communication systems must consider a sudden breakaway of nodes. However existing systems isn't(More)