Cholera enterotoxin (CT) is a major virulence determinant of Vibrio cholerae 01. CI' is known to be the major virulence factor of Vibrio cholerae 01 and in accordance with the recent report showing which V. cholerae non-01 has ctx gene, we performed the molecular genetic study for the detection of ctx gene related to the production of CT at the subject Vibrio spp. except for V. cholerae non-01 and V. cholerae non-01 stock cultured in the laboratory of microbiology, College of Medicine, Pusan National University and the Vibrio spp. isolated from the marine products of Pusan General Fish Market and the sea water, and then its results are as follows: 1. PCR for the detection of ctx gene at the subject of V. cholerae 01:61H-151 having the ctx gene of which the denaturation is 1 rninute at 95'C, annealing to 1min, 30 sec at 60'C, the extension to be 1min. 30 sec at 72'C and 30 or 40 cycles. ctx gene was detected from 4 strains of V. cholera non-01 derived from the environment isolates. 2. Adjusting the quantity of chromosomal DNA used as template DNA to be from 0.1 pg to 1 ng, in order to know the PCR conditions for the effective search of ctx gene, and the detection limit of the system was 10 pg of chromosomal DNA. 3. The broth culture was used for template DNA, ctx gene of 302 bp was detected from 4 V. cholerae non-01, as in the case of chromosomal DNA, and the cell number was possible to be detected to 3 * 10.4. We attempted the confirmation of ctx gene through Southern blot hybridization, labeling with P and then it was confirmed only from 4 V. cholerae non-01 as like PCR results. 5. As the result of the sensitivity of PCR and Southern blot hybridization, it was shown to be possible which 10 pg was detected in case of chromosomal DNA and in case of cultured broth, the cell number was detected until 10 at PCR and Southern blot hybridization, and thus it was examed which its sensitivity was same.
Blotting, Southern ; Busan ; Cell Count ; Cholera Toxin* ; Cholera* ; DNA* ; Enterotoxins ; Limit of Detection ; Molecular Biology ; Operon* ; Polymerase Chain Reaction* ; Seawater ; Vibrio cholerae* ; Vibrio* ; Virulence

No abstract available.
Peptic Ulcer*

Using the FTA-ABS complernent test, 32 skin speciruens from 27 patients with primary and secondary syphilis and a stomach specimen from a patient with suspected gastric syphilis which were confirmed by clinical history, physical examination, VDRL, FTA-ABS, and 19S(IgM)-FTA test, were tested. The following results were obtained. 1. In the darkfield examination, 7 of the 9 specimens(78%) were positive and in the FTA-ABS complernent test, 20 of the 33 specimens(61%) were positive. 2. The ratio of agreement between the darkfield examination and the FTA-ABS complement test was 89%. 3. In the chancres, macular syphilids, and condyloma lata, T. pallida were diffusely scattered in the epidermis, dermoepidermal junction, connective tiasue, and vascular walls, whereas in the papular syphilid T. pallida were mainly aggregated in the the epidermis, dermoepidermal junction, papillary dermis as well as the blood vessel walls in the papillary dermis. From these results, the FTA-ABS complement test can be considered to be a useful method for both the diagnosis and research of syphilis. It is especially helpful in cases where serological or histopathological study can not confirrn the diagnosis as when internal organs are involved.
Blood Vessels ; Chancre ; Complement System Proteins* ; Dermis ; Diagnosis ; Epidermis ; Humans ; Physical Examination ; Skin ; Stomach ; Syphilis ; Syphilis, Cutaneous ; Treponema pallidum* ; Treponema*

Wear of articular cartilage usually occurs at flexion zones (30°–60°) of the femorotibial articulation, which is demonstrable on the 45°posteroanterior (PA) weight-bearing view. The authors measured and evaluated the cartilage space on the non weight-bearing AP view, AP extension weight-bearing view and 45°PA flexion weight-bearing view, comparing operative findings in cases of 18 osteoarthritis, 7 rheumatoid arthritis and 2 spontaneous osteonecrosis of the lateral femoral condyle, who underwent total or hemiarthro plasty (1 case) of the knee. The results were as follows. l. Operative findings of 11 out of 18 osteoarthritis (61.1%) showed cartilage defect of middle 3/4–4/5 of the medial tibial condyle (sparing finger tip sized anterior & posterior edge) and corresponding femoral condyle. The cartilage space on the AP non weight-bearing, AP extension weight-bearing and 45°PA flexion weight-bearing view were normal to 20% decrease (4.1–5.0mm remained), 60–80% decrease (1.1–2.0mm remained) and 80–100% decrease (0–1.0mm remained), respectively, showing one grade increased cartilage space narrowing on the 45°PA flexion weight-bearing view comparing to AP extension weight-bearing view. 2. Uniform cartilage defect of medial compartment was found in 7(38.9%) osteoarthritic knees. The cartilage space on the non weight-bearing AP view were normal. Both AP & PA weightbearing views showed 60–80% decrease (1.1–2.0mm remained) in 3 knees & 80–100% decrease (0–1.0 mm remained) in 4 knees without any difference between the two views. 3. Uniform cartilage space narrowing of both medal & lateral compartment was noted in 7 rheumatoid knees. The cartilage space on the AP non weight-bearing view were 20–40% decrease (3.1–4.0mm remained) in all knees. The AP extension & 45°PA flexion view showed 40–60% decrease (2.1–3.0mm remained) in 2 knees, 60–80% (1.1–2.0mm remained) in 5 knees respectively without any difference between two groups. 4. The anterior horn of menisci was always intact. The presence of menisci didn't affect the radiological cartilage space. 5. The 45°PA flexion weight-bearing view functioned as a tunnel view showing bone defect and less than 20% decrease of cartilage space in cases of the spontaneous osteonecrosis of the lateral femoral condyle. From our results it was concluded that the radiologic cartilage space could be more accurately demonstrated with 45°PA flexion weight-bearing view in addition to the conventional AP extension weight-bearing view.
Animals ; Arthritis, Rheumatoid ; Cartilage ; Cartilage, Articular ; Clothing ; Fingers ; Horns ; Knee ; Numismatics ; Osteoarthritis ; Osteonecrosis ; Weight-Bearing

An association study with Korean alcoholic patients(n=50) and normal controls(n=53) was performed to find the relationship between catechol-O-methyltransferase(COMT) gene polymorphism and alcoholism using polymerase chain reaction-restriction fragment length polymorphism. When we compared the allele and genotype frequencies of Nla III COMT gene polymorphism in alcoholism and normal controls, there was no significant difference between two groups. Our results do not support an association between the Nla III polymorphism of COMT gene and alcoholism.
Alcoholics ; Alcoholism* ; Alleles ; Genotype ; Humans

A total of 100 Vibrio spp. strains were examined for production of various extracellular enzyme and for plasmid content plasmid were subjected to digestion with restriction enzymes. Most of them produced extracellular enzyme more than one, especially V. parahaemolyticus and V. cholerae non-01 strains were showed production of various extracellular enzymes. About the 55% Vibrio spp. have the plasmid more than one, but a lot of Vibrio spp. (about 45%) did not possess any plasmid. Most of these plasmid various derivatives ranged from 2.4 kb-23 kb, especially two strains of V. mimicus and one strain of V. furnissii carried one high-molecular weight plasmid (molecular weight ranging between 70 kb-100 kb). Results of restriction analysis for plasmid of this three strains were by no means the rule. For detection of tdh and ctx gene, the virulence factor involved in the pathogenesis, we carried out the TDH, CT assay, PCR amplification, and hybridization. A total 11 strains were produced TDH, involved in 4 strains of V. parahaemolyticus and 1 strain of V. cholerae non-01 from clinical isolates and 6 strains of environmental isolates. Nine strains of 11 strains, involved in 4 strains of V. parahaemolyticus and 1 strain of V. cholerae non-01 from clinical isolates and 4 strains of V. parahaemolyticus from environmental isolates, could be successfully amplified in 400 bp by PCR, no amplification products were obtained from TDH-negative strains. The PCR results were consistent with DNA hybridization. In the experiments of ctx gene detection, in all, 3 strains of V. cholerae non-01 from clinical isolate and 1 strains of V. cholerae non-01 from environmental isolate were observed CT- positive. These CT-producing strains amplified in 302 bp by PCR for the detection of ctx gene. All CT-producing strains hybridized with digoxigenin-labeled DNA probe, while CT-negative strains did not hybridize. Also hybridization tests results for detection of ctx gene consistent with PCR.
Cholera ; Digestion ; DNA ; Plasmids ; Polymerase Chain Reaction ; Vibrio* ; Virulence Factors* ; Virulence*

No abstract available.
Humans ; Stenotrophomonas maltophilia*

PURPOSE: The aim of this study was to evaluate the periodontal and prosthodontic complications of multiple freestanding implants in the posterior jaws for up to 1 year of function. MATERIAL AND METHODS: Eight patients received 20 implants posterior to canines. Two or more implants were consecutively inserted to each patient. Single crowns were delivered onto the implants. Marginal bone loss, implant mobility, probing depth, and screw loosening were examined to evaluate the clinical success of such restorations for maximum 1 year of functional loading. RESULTS: All the implants performed well during the observation period. Neither periodontal nor prosthodontic complications were found except a slight porcelain chipping. While the marginal bone level was on average 0.09 mm lower around the implant after 6 months of loading, it was 0.15 mm higher after 1 year. CONCLUSION: Within the limits of this investigation, separate single-tooth implant restorations to replace consecutive missing teeth may clinically function well in the posterior jaw.
Cohort Studies ; Crowns ; Dental Implants, Single-Tooth ; Dental Porcelain ; Humans ; Jaw ; Prospective Studies ; Prosthodontics ; Tooth

The hindfoot in the human body is known to play an important function for weight bearng, shock absorption and locomotion. The defect of hindfoot presents serious problems of the leg length discrepancy and weight bearing. Therefore, it is essential to reconstruct the defect of hindfoot. Up to date, many surgical modalities from a skin graft to the innervated osteocutaneous flap have been developed, but a completely satisfactory method of reconstruction has not been found. The ideal reconstructive method should provide sufficient padding tissue and sensibility. In the Department of Orthopaedic Surgery, capital Armed Forces General Hospital, two cases of hindfoot defect due to explosion were reconstructed by the midplantar fasciocutaneous flap with free iliac bone graft. The results of our procedure were very acceptable one year after the operations.
Absorption ; Arm ; Explosions ; Hospitals, General ; Human Body ; Leg ; Locomotion ; Methods ; Shock ; Skin ; Transplants ; Weight-Bearing ; Wounds and Injuries

No Abstract Available.
Hair*