No abstract available.
Erythema Infectiosum*

A particular problem associated with osseointegrated implants is the fact that the implants lack a periodontal ligament. Thereby, marginal inflammation around an implant may cause more serious bone loss than does marginal inflammation around teeth with a periodontal ligament. In addition, osseointegrated implants are ankylosed and do not haute the same mobility as natural teeth with a periodontal ligament. Implants with a periodontal ligament would eliminate these problems. In order to explore the possibility of producing a periodontal ligament around titanium dental implants, a study of the attachment of cultured periodontal ligament cells to titanium was carried out. Periodontal ligament cells obtained from premolar teeth of individuals undergoing tooth extraction for orthodontic reasons were cultured on titanium-coated epon blocks. Sections of the blocks were cut perpendicular to the surface of the cell layer. Transmission electron microscopy of the periodntal ligament cells/titanium interface showed that there was no evidence of attachment at the cultured periodontal ligament cells titanium interface. The microfilaments, commonly located adjacent to the titanium surface, run mostly parallel to the titanium surface. The study showed that cultured periodontal ligament cells did not create an attachment structure on a titanium surface similar to that of natural teeth.
Actin Cytoskeleton ; Bicuspid ; Dental Implants ; Inflammation ; Ligaments ; Microscopy, Electron, Transmission ; Periodontal Ligament* ; Titanium* ; Tooth ; Tooth Extraction

The purpose of the present study is to demonstrate the distribution of carbonic anhydrase pattern in the various termatodes (Fasciola gigantica, Paramphistoma orthocoelium, Paragonimus westermani) by means of Kurada staining method, and to correlate these findings with the histochemical data and harboring location. The results are summarized as follows: In Fasciloa gigantica, carbonic anhydrase activity was positive in the vitelline gland cells and eggs in the uterus. In Paramphistoma orthocoelium, carbonic anhydrase activity was positive in the vitelline gland cells and eggs in the uterus. In Paragonimus westermani, carbonic anhydrase activity was positive in intestinal mucous membrane, vitelline gland cells and eggs.
parasitology-helminth-trematoda ; Fasciola gigantica ; Paramphistoma orthocoelium ; Paragonimus westermani ; histochemistry ; carbonic anhydrase

No abstract available.
Vaccination*

No abstract available.
Neurothekeoma* ; Scalp

BACKGROUND: Before the introduction of the antinuclear antibody test (ANA), the lupus erythematosus (LE) cell test was a useful diagnostic test for systemic lupus erythematosus(SLE) But, the ANA test has replaced the LE cell test in virtually all laboratories as the current routine test for SLE. However, because the LE cell test is still performed in some laboratories, the authors compared the LE cell test with the ANA test to reevaluate the LE cell test. METHODS: A total of 522 cases were evaluated from Aug. 1990 to Aug. 1994. In these cases, the LE cell test and the ANA test were performed simultaneously, and the results were compared. The authors defined the 'True LE Phenomenon' as only when the LE cell test results agreed with the anti-histone antibody pattern of the ANA test. RESULTS: Of the total 522 cases, 56 cases(10.7%) were SLE. The LE cell test was positive in 22 cases(39.3%) and the ANA test in 56 cases(100%). The LE cell test produced 6(27%) false positive cases and 3 (8.8%) false negative cases. Therefore, the sensitivity of the LE cell test that was verified by the ANA test was only 28.6%. On the other hand, the sensitivity of the ANA test was 100%. In 2 cases, the LE cell results were different in repetitive tests although the ANA results were the same. In 2 other cases, it was impossible to interprete the results of the LE cell test because of severe leukopenia. CONCLUSIONS: The authors concluded that the LE cell test showed markedly low sensitivity and a high false positive and false negative rates for SLE, and that the LE cell test was difficult to perform and interpret accurately due to numerous interfering factors. Therefore, for accurate diagnosis of SLE, the LE cell test must be replaced by more definitive and quantitative immunologic tests in all laboratories such as the ANA test.
Antibodies, Antinuclear ; Diagnosis ; Diagnostic Tests, Routine ; Hand ; Immunologic Tests ; Leukopenia ; Neutrophils*

BACKGROUND: Before the introduction of the antinuclear antibody test (ANA), the lupus erythematosus (LE) cell test was a useful diagnostic test for systemic lupus erythematosus(SLE) But, the ANA test has replaced the LE cell test in virtually all laboratories as the current routine test for SLE. However, because the LE cell test is still performed in some laboratories, the authors compared the LE cell test with the ANA test to reevaluate the LE cell test. METHODS: A total of 522 cases were evaluated from Aug. 1990 to Aug. 1994. In these cases, the LE cell test and the ANA test were performed simultaneously, and the results were compared. The authors defined the 'True LE Phenomenon' as only when the LE cell test results agreed with the anti-histone antibody pattern of the ANA test. RESULTS: Of the total 522 cases, 56 cases(10.7%) were SLE. The LE cell test was positive in 22 cases(39.3%) and the ANA test in 56 cases(100%). The LE cell test produced 6(27%) false positive cases and 3 (8.8%) false negative cases. Therefore, the sensitivity of the LE cell test that was verified by the ANA test was only 28.6%. On the other hand, the sensitivity of the ANA test was 100%. In 2 cases, the LE cell results were different in repetitive tests although the ANA results were the same. In 2 other cases, it was impossible to interprete the results of the LE cell test because of severe leukopenia. CONCLUSIONS: The authors concluded that the LE cell test showed markedly low sensitivity and a high false positive and false negative rates for SLE, and that the LE cell test was difficult to perform and interpret accurately due to numerous interfering factors. Therefore, for accurate diagnosis of SLE, the LE cell test must be replaced by more definitive and quantitative immunologic tests in all laboratories such as the ANA test.
Antibodies, Antinuclear ; Diagnosis ; Diagnostic Tests, Routine ; Hand ; Immunologic Tests ; Leukopenia ; Neutrophils*

Thl cloned cell line 28-4 which is an I-A + KLH - specific Th1 type clone of (C57BU6xC 3H) F1 origin was kindly provided by professor Tomio Tada. In these studies, employing these cloned cells, the author investigated both proliferation responses of Thl cells in the presence of various concentrations of cytokines, such as IL-2, IL-4 or IL-6 and proliferation of Thl cells to various concentration of mitogens such as PHA, ConA or PWM. In addition, the author also investigated the proliferation response of Th1 cells to the optimal dose of PHA, ConA or PWM in the presence or absence of above mentioned cytokines. It was found that IL-2, IL-4 or IL-6 alone their growth stimulation degree was dependent on cytokine concentration and that PHA, ConA or PWM stimulated Thl cell proliferation and optimal dose of PHA ConA and PWM was 3 g, 4 g and 2 g per ml, respectively. In addition, proliferation response of Th1 cells to ConA or PWM in the presence of IL-2 was significantly enhanced, but the proliferation response to PHA was not increased significantly. However, IL-4 did not significantly modulate mitogen-activated Thl cell proliferation response. Interestingly, IL-6 decreased PHA- or ConA-activated proliferation of Thl cells, but did not change PWM-activated proliferation. Taken together, these studies strongly suggested that IL-2, IL-4 or IL-6 itself clone stimulated the Thl cell proliferation and that PHA, ConA or PWM also stimulated Thl cell proliferation. In addition, these studies also indicated that IL-2 increased ConA- or PWM-activated Thl cell proliferation, but IL6 inhibited PHA- or ConA-activated Th1 cell proliferation and that IL-4 did not significantly change the mitogen-activated Th1 cell proliferation.
Cell Line ; Cell Proliferation ; Clone Cells ; Cytokines* ; Interleukin-2 ; Interleukin-4 ; Interleukin-6 ; Mitogens ; Th1 Cells*

We analyzed 41 cases of burst fractures on the thoracolumbar junction which were operated with Kaneda and Cotrel-Dubousset implant at Chosun University Hospital between 1989 and 1993. The purpose of this study was to evaluate the radiologic sign, the amount of reduction, complications, and functional results. The results were as follows: 1. According to McGrorys Criteria to evaluate the posterior superior vertebral body angle of burst fractures, 33 out of 41 cases(80.5%) were positive and the average angle degree was 107.6°. 2. The average postoperative kyphotic correction was 15.4° in the Kaneda group and 13.8° in the C-D group. The average loss of correction at follow-up examination was 5° in the Kaneda group and 4.8° in the C-D group. 3. Indirect reduction was achieved in 10 cases(50%) and we obtained a good indirect reduction even though canal compromise was over 50%. 4. The pain at operative site was much more severe in the Kaneda group(6 cases) than in the C-D group(2 cases) and both groups experienced 2 cases each of implant failure. 5. According to Denis' pain and work scale, 28 cases(63.8%) had good and excellent, 8 cases had fair and 5 cases had poor results. In summary we recommend doing 1) a posterior instrumentation first for stability and indirect reduction, if it is not a severe neurologic symptom and 2) anterior decompression if it is a severe or progressive neurologic symptom.
Decompression ; Follow-Up Studies ; Neurologic Manifestations

The inhibitory effect of rice(Oryza sartiva L., illpumbyeo) against mutagenicity induced by tryptophan pyrolysates were investigated using Salmonella typhimurium reversion assay. Both methanol extracts of obtained from brown and white rice were found to possess strong activites of inhibiting the mutagenicities of 3-amino-1,4-dimethyl-5H-pyriod[4,3-b]indol(Trp-P-1) and 3-amino-1-methyl-5H-pyrido[4,3-b]indol(Trp-P-2) on Salmonella typhimurium reversion assay. As the concentration of methanol extract increased, inhibitory effect on mutagenicity increased but reached at steady state as inhibition rate of 90% when the concentration was above 10mg/plate. There was no significant difference(p>0.05) in inhibitory effect of methanol extracts between brown and white rice against tryptophan pyrolysates.
Methanol ; Salmonella typhimurium ; Tryptophan*