One hundred and thirty trimethoprim-resistant R plasmids derived from of Escherichia coli isolated from clinical specimens and feces of healthy collegians were examined for incompatibility, EcoRI endonuclease restriction fragment pattern, and Southern hybridization with DHFR I, II, III, V, and VII probe. 1. Most trimethoprim-resistant R plasmids were resistant to ampicillin, tetracycline, chloramphenicol, gentamicin, and kanamycin, and showed multiple drug resistance and various antimicrobial resistance patterns. 2. Trimethoprim-resistant R plasmids ranged from 90 to 50 kilobase and 42.3% of R plasmids tested were classified to incompatibilty group Inc FI, Inc FII or Inc FIV, 3. Among 48 random selected R plasmids from various origin, 14 R plasmids (including 9 of 14 Inc FII plasmids and 3 of 14 Inc FI plasmids) hybridized with DHFR VII oligonucleotide probe but others did not respond to any of DHFR probes used. 4. Most R plasmids showed various EcoRI endonuclease fragments and different reaction sites by Southern hybridization. Six plasmids showed identical or nearly identical molecular weight, EcoRI endonuclease fragment patterns and different sites of Southern hybridization. But 2 Inc FII plasmids derived from urine and feces showed identical pattern. These findings, if confirmed by further studies, suggest that normal flora E. coli can act as reservoir of resistant genes and, consequently, as a factor in the dissemination of these genes among enteric pathogens and need to be examined further.
Ampicillin ; Chloramphenicol ; Deoxyribonuclease EcoRI ; Drug Resistance, Multiple ; Escherichia coli* ; Escherichia* ; Feces ; Gentamicins ; Immunodeficiency Virus, Feline ; Kanamycin ; Molecular Biology* ; Molecular Weight ; Plasmids ; R Factors ; Tetracycline ; Trimethoprim Resistance* ; Trimethoprim*

PURPOSE: This is a retrospective study to analyze the clinical and radiological results of posterolateral fusion with a pedicle screw fixation for lumbar spondylolisthesis. MATERIAL AND METHOD: From January 1994 to June 1997, forty-seven patients with spondylolisthesis were treated by posterolateral fusion with pedicle screw fixation. The clinical results were analyzed according to Kirkaldy-Willis & Kim's criteria and radiological union, reduction of slippage, change of disc space, change of lumbar and segmental angle were assessed by simple X-ray. RESULTS: The good bony union rate of formation and satisfactory clinical results were obtained, but the reduction of slippage, the restoration of disc height and the change of sagittal angle were not sustained. There was a significant relationship between the clinical results and the loss of anterior disc height. CONCLUSIONS: The satisfactory clinical results were seen to be in follow-up observation, and the maintenance of anterior disc height significantly influenced clinical results. We think that the additional operation method is necessary in maintaining the disc height.
Follow-Up Studies ; Humans ; Retrospective Studies ; Spondylolisthesis*

Duplications of the gastrointestinal tract are rare congenital malformations that are usually present during the first decade of life. However, a smaller number of cases may remain occult until adulthood. Overall, the colon is the least common site of congenital gastrointestinal duplications. Colonic duplications can present with symptoms of diverticulitis and can be confused with acquired giant cysts or masses. We present a rare case of a duplication cyst of the colon in a female adult. Although the preoperative evaluations, including an abdominal CT scan and colonoscopy, were suggestive of a gastrointestinal tumor of the colon, the final diagnosis was a colonic duplication cyst based on the histopathologic examination of the resected specimen. Even if intestinal duplication cysts are uncommon, they should be considered in the differential diagnosis of intestinal masses.
Adult ; Colon ; Colonoscopy ; Diagnosis, Differential ; Digestive System Abnormalities ; Diverticulitis ; Female ; Gastrointestinal Stromal Tumors ; Gastrointestinal Tract ; Humans

Endoscopy has been the method of choice for the initial diagnosis and treatment of gastrointestinal bleeding. However, in the case of difficult localization or endoscopic failure, angiographic or surgical alternative may be recommended. The role of angiography has been emphasized recently to control upper GI bleeding. We experienced a case with deep ulcer displaying exposed vessel along the duodenal bulb, which imposed serious rebleeding risk. Although, active bleeding was controlled by the epinephrine injections in that patient, rebleeding risk was still high. So the patient underwent emergency angiography with embolization of the pancreaticoduodenal artery and gastroduodenal artery using multiple microcoils. Follow-up endoscopic examinations showed a coil protruding into the lumen from the ulcer bed, and the exposed coil at the ulcer base was completely by the regenerated epithelium three months later. Here in, we describe the rare case of a endodcopically exposed coil after embolization for bleeding duodenal ulcer which is the first case ever reported in Korea.
Angiography ; Arteries ; Diagnosis ; Duodenal Ulcer* ; Emergencies ; Endoscopy ; Epinephrine ; Epithelium ; Follow-Up Studies ; Hemorrhage* ; Humans ; Korea ; Ulcer