Hepatic Portal Venous Gas

Hepatic portal venous gas (HPVG) is a rare disease presenting as acute abdomen. There were first described in children with necrotizing enterocolitis in 1955. HPVG is caused by mesenteric ischemia but may have various etiologies. Predisposing factors that develop mesenteric ischemia include gastric ulcer disease, bowel obstruction, diverticulitis and sepsis. The presence of the air in the portal and mesenteric vein on radiographics has been associated with a mortality rate of more than 75% in earlier studies. Abdominal computed tomography has proven useful for detecting portomesenteric venous gas and pneumatosis intestinalis. We report a case of the patient with hepatic portal venous gas with pneumatosis intestinalis, which showed rapid progress of the disease and eventually died within 24 hours of admission.

A Case of Strangulated Intussusception Caused by the Small Intestinal Lipoma in Adult / 대한소화기내시경학회지

An intussusception in adulthood is an unusual cause of bowel obstruction. It accounts for up to 5% of all intussusception. Approximately 90% of cases are secondary to a definite lesion such as malignancy or lipoma. Most patients are asymptomatic and the lesion is often detected incidentally at colonoscopy, operation and autopsy. Strangulated intussuscetion is a rare case and also requires emergency operation. A 32-year-old woman visited our emergency room because of severe epigastric pain. Abdominal CT revealed a low density mass in bowel loop and distended small bowel loops filled with fluid. Colonoscopic finding showed huge purple-colored coil-spring lesion in the ascending colon. From this findings, we diagnosed a strangulated intussusception. Surgically removed specimen revealed a small intestinal lipoma.

The Effect of TitaniumI Surface Treatment on Osteoblast-Like Cell Attachment and Proliferation / 대한치주과학회지

In clinical therapy, the current goal of dental implants is to enhance quantity and quality of osseointegration. Surface roughness and oxide structure are considered to influence the behavior of adherent cells. The purpose of this study is to evaluate the effect of different surface treatment on cellular response. The attachment and proliferation of osteoblast-like cell on sandblasted, sandblasted and etched, thermal oxidated surfaces have been compared. Sandblasting was done with Al2O3 particles(grain size of 50micrometer), etching was processed with NH4OH : H2O2 : H2O(1:1:5) at 90degrees C for 1 minute. Thermal oxidation was followed sandblasting and etching at 400degrees C, 600degrees C, 800degrees C for 2 hours. Measurement of surface roughness after the different treatment did not show any differences of Ra value between terated surfaces. Cell attachment and proliferation were increased during experiment period, but no difference was observed. SEM evaluation revealed a similar pattern of osteoblastlike cells, well attached with dendritic extension and producing numerous matrix vesicles on cell surface. The results of this study showed that oxide layer alteration by thermal oxidation did not affect the attachment and proliferation of osteoblast-like cells. This suggests the possibility that the cellular responses are further influenced by surface roughness than titaniun oxide structure. This study was supported by a grant(HMP-98-G-2-035-B) of the HAN(highly advanced National) Projected, Ministry of Health & Welfare, R.O.K

Antiinflammatory Effects of Tetracycline-loaded Biodegradable Membranes in Experimental Periodontitis of Beagle Dogs / 대한치주과학회지

No abstract available.

Helicobacter pylori Culture in Dental Plaque of Gastroduodenal Disease Patients / 대한소화기내시경학회지

BACKGROUND AND AIMS: The major mode of transmission of Helicobacter pylori is still uncertain. To investigate whether the oral cavity is a potential reservoir, dental plaques were cultured from patients with dyspeptic symptoms who underwent endoscopy. METHODS: Rapid urease test (CLO test), Giemsa stain, and culture were performed in 39 gastroscopic biopsy specimens from patients with peptic ulcer, chronic gastritis or gastric cancer. Ten gastric mucosal biopsy specimens and 39 dental plaque specimens were innoculated onto 5% sheep blood agar. RESULTS: Twenty patients (51%) were found to be H. pylori positive on antral histology or rapid urease test. Among ten patients, 8 patients (80%) were cultured for H. pylori from antral biopsies. However H. pylori was not isolated from any dental plaque regardless of their infective status and their oral hygiene or gingival status. CONCLUSIONS: We failed to isolate H. pylori from dental plaques in a group of dyspeptic patients with H. pylori-associated gastroduodenal disease. The findings strongly suggest that dental plaque is not an important reservoir of H. pylori and probably not a significant factor in the mode of transmission of H. pylori.