Rebamipide Protects Colonic Damage Induced by Trinitrobenzene Sulfonic Acid (TNBS) via Down-Regulation of TNF-alpha IL-1beta and ICAM-1 / 대한해부학회지

During inflammation of the colon, cells of the gut mucosa produce or express numerous inflammatory mediators, such as tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1 beta), and intercellular adhesion molecule 1 (ICAM-1). These mediators have been implicated as contributory factors to the inflammatory process, which results in colitis during inflammatory bowel disease (IBD). Rebamipide is an anti-gastric ulcer drug with anti-inflammatory properties in vivo and in vitro. The effects of Rebamipide on IBD have not been largely evaluated. Therefore, this study investigated the potential of Rebamipide to regulate the production of inflammatory mediators such as TNF-alpha, IL-1beta, and ICAM-1. Mice with trinitrobenzene sulfonic acid (TNBS)-induced colitis (IBD animal model), were treated intrarectally with 2 mM Rebamipide. Body weight, macro- and micro-histological scores, and activity were evaluated. As an index of tissue edema, the thickness of the colonic wall was measured between the serosal surface and the luminal surface of the mucosa. TNF-alpha, IL-1 beta, and ICAM-1 were detected by immunohistochemical staining. Rebamipide treatment of mice exhibiting TNBS-induced colitis dramatically improved the clinical and histopathological findings of inflammation. In addition, Rebamipide suppressed TNF-alpha, IL-1 beta, and ICAM-1 expression in TNBS-treated animals. Taken together, these findings suggest that Rebamipide is a potential therapeutic agent for treating patients with IBD.

Protective Effect of Nitric Oxide Against Lipopolysaccharide-induced Cytotoxicity in C6-glial Cell / 대한해부학회지

Nitric oxide (NO) is mainly involved in brain ischemic damage to elucidate the protective mechanism of NO pretreatment on ischemic-induced cytotoxicity. This study was investigated whether NO pretreatment inhibits the increase of iNOS expression by lipopolysaccharide (LPS) combined phorbol 12-myristate 13-acetate (PMA) via regulating NF-kB activation in C6 glial cells. C6 glial cells with LPS and PMA for 72 hours markedly induced NO, but sodium nitroprusside (SNP) (100 nM) pretreatment before exposure of LPS and PMA significantly supressed NO production, iNOS expression and NF-kB activation by LPS and PMA. In addition, LPS and PMA treatment for 72 hours induced severely cell death and LDH release from cell into media in C6 glial cells. However SNP pretreatment before treatment of LPS and PMA significantly protected LPS and PMA induced cytotoxicity. Treatment with LPS and PMA induced caspase 3 activation follewed by chromosomal condensation, and fragmentation of nuclei in C6 glial cells. SNP pretreatment before exposure to LPS and PMA supressed caspase 3 activation and inhibited chromosomal condensation and fragmentation of nuclei. From these above results, it is suggest that the protective effects of SNP pretreatment against LPS and PMA induced cytotoxicity may be mediated by inhibiting the expression of iNOS via regulating NF-kB activation.

A Case of Chronic Idiopathic Pseudo-Obstruction Caused by a Degenerative

Intestinal pseudo-obstruction is characterized by symptoms and signs of mechanical bowel obstruction in the abscence of an occluding lesion of the intestinal lumen. The chronic forms of intestinal pseudo-obstruction are separated into primary and secondary in according to the underlying disorders. primary or chronic idiopathic intestinal pseudo-obstruction(CIIP) is not associated with systemic illness and a progressive nature with relapses and remissions. Since Dyer described the rare histologic subtype of idiopathic pseudo-obstruction, the primary abnormality is in the myenteric plexus of the bowel at first in 1969, only few cases are reported. We report a case of CIIP caused by degeneration of myenteric plexus of the colon and he was successfully treated with surgical management.

Three Cases of Familial Adenomatous Polyposis

Familial polyposis is a rare genetic disorder which the large intestine is diffusely carpeted by numerous adenomatous polyps. According to the recent studies, familial polyposis is a disease which produces polypoid lesions not only in the large intestine but also in the stomach, duodenum, ileum and jejunum. The natural course of extracolonic lesions is variable, but the colonic polyps are associated with high incidence of cancer. The risk of malignant change is virtually 100% if untreated. Thus when adenomatosis is noted, familial members at risk for familial adenomatous polyposis must be screened and prophylactic surgery performed to prevent inevitable colon cancer. Controversy exists about the most appropriate prophylactic treatment. Because of many disadvantages of ileostomy, total colectomy with ileorectal anastomosis (ileoproctostomy) or total colectomy with rectal mucosa stripping and ileoanal anastomosis has become a more preferred approach. After ileorectal anastomosis, polyps in the retained rectum must be removed by endoscopic polypectomy and rigorously followed by sigmoidoscopy every few months for prevention of polyp reccurence or malignant transformation. We experienced three cases of familial adenomatous polyposis and 2 of them were treated successfully by preoperative colonoscopic polypectomy, total colectomy and ileoproctostomy.

A Case of Subphrenic Esophageal Diverticulum Associated with Esophageal Leiomyoma / 대한내과학회지

Esophageal diverticulum is a disease that occurs mainly in adults. According to its location, it is named as pharyngoesophageal, paratracheal and epiphrenic diverticulum. Epiphrenic diverticulum is especially accompanied with esophageal leiomyoma sometimes. In this case. esophageal leiomyoma is combined with suhphrenic diverticulum. The authors present the case with review of literature. The diagnosis of subphrenic diverticulum was confirmed by esophagogastroscopy with biopsy, esophagogram and abdominal CT. Postoperative findings showed it to be accompanied with esophageal leiomyoma.

A Case of Successful Laser Photocoagulation in Gastric Telangiectasias / 대한소화기내시경학회지

The routine of endoscopy in the evaluatien of gastrointestinal bleeding demonatratd that telangiectasia in the upper gastrointestinal tract may be responsible for the chronic recurrent bleeding. If the bleeding lesion within the reach of the endoscaiye, it is amenahle to endoscopic therapy, One of the several treatment modalities that has been employed is laser photocoagulation. We report a case of ef fective laser therapy in a 63-years old woman presented with a about 3 years history of recurrent upper gastrointestinal bleeding and persistent iron deficieney anemia in gaatic multiple telangeictasias. An upper gastrointestinal endoscopy demonstrated variable sized multiple bleeding telangectatic lesions in the entire stomach. Nd-YAG laser photocoagulation was appligd in 0.5 seconds pulse of 60-70W power(2300 joules and total 7 sessions). All legions in the stomach were treated. Local epinephrine injection prior to laser treatment was carried out in the telangiectatie lesions greater than 1 cm. Follow-up endoscopy 5 months after laser treatment demonstrated no telangiectatic lesions in the stomach and no episodes of upper gastrointestinal bleeding were noted and the other symptoms improved.

A Case of Successful Laser Photocoagulation in Gastric Telangiectasias / 대한소화기내시경학회지

The routine of endoscopy in the evaluatien of gastrointestinal bleeding demonatratd that telangiectasia in the upper gastrointestinal tract may be responsible for the chronic recurrent bleeding. If the bleeding lesion within the reach of the endoscaiye, it is amenahle to endoscopic therapy, One of the several treatment modalities that has been employed is laser photocoagulation. We report a case of ef fective laser therapy in a 63-years old woman presented with a about 3 years history of recurrent upper gastrointestinal bleeding and persistent iron deficieney anemia in gaatic multiple telangeictasias. An upper gastrointestinal endoscopy demonstrated variable sized multiple bleeding telangectatic lesions in the entire stomach. Nd-YAG laser photocoagulation was appligd in 0.5 seconds pulse of 60-70W power(2300 joules and total 7 sessions). All legions in the stomach were treated. Local epinephrine injection prior to laser treatment was carried out in the telangiectatie lesions greater than 1 cm. Follow-up endoscopy 5 months after laser treatment demonstrated no telangiectatic lesions in the stomach and no episodes of upper gastrointestinal bleeding were noted and the other symptoms improved.