OBJECTIVES: the aim of this study was to evaluate plasmin system in placenta fiom women with normal and preeclamptic pregnancy. METHODS: The levels of urokinase-type plasminogen activator(uPA), tissue-type plasrninogen activator(tPA), uPA receptor(uPAR) and plasminogen activatar inhibitor-1(PAI-1) mRNAs were measured by Northern blotting in placenta hom sixteen women with normal (n""8) and preeclamptic (n""8) pregnancy. The levels of tPA protein and PAI-1 protein were also measured by Westerrn blotting. RESULTS: Densitometric measurements revealed no difference in the levels of uPA mRNA, uPAR mRNA, tPA protein and PAI-1 protein in placentas fiom normal and preeclamptic pregnancies. There was, however, a significant decrease in the level of 3.2 kb PAI-I mRNA in placentas from preeclamptic women compared to normal pregnant women. CONCLUSION: To the contrary of our expectation, 3.2 kb PAI-1 mRNA level was significantly lower in placenta from women with preeclampsia compared to normal pregnancy. This seems to reflect differential accumulation of PAI-1 mRNAs due to environmental intluences or decreased differentiation potential of villous trophoblasts to invasive trophoblasts in placenta from preeclamptic women compared to normal pregnant women. The mechanism that regulates plasmin system in human placenta needs further investigations.
Blotting, Northern ; Female ; Fibrinolysin* ; Humans ; Placenta* ; Plasminogen ; Plasminogen Activator Inhibitor 1 ; Plasminogen Activators ; Pre-Eclampsia ; Pregnancy* ; Pregnant Women ; RNA, Messenger ; Trophoblasts

It is well established that mast cell proliferation and maturation are regulated by two principle cytokines, IL-3 and the c-kit ligand stem cell factor (SCF). Previous reports have demonstrated that bone marrow-derived IL-3-dependent mast cells exhibit the characteristic apoptosis on removal of IL-3. To know how the number of mast cells is controlled, we observed the effects of nitric oxide (NO) on the murine bone marrow-derived cultured mast cells (BMCMC). Apoptosis was measured by the analysis of flow cytometric data and electrophoretic evidence of DNA fragmentation. Our data showed that sodiurn nitroprusside (SNP)-a NO releasing substance- induced apoptosis in BMCMC. Cell cycle analysis showed that the number of the G,/G, and S phase decreased markedly, while the percentage of cell in G,/M phase was increased. Also, SNP alone induced cell death, whereas SNP in combination with SCF markedly decreased cell death of BMCMC. SNP-induced apoptosis was partially inhibited by the treatment of BMCMC with SCF. Our results suggest that NO might have sorne role in the regulation of the number of mast cells.
Apoptosis ; Bone Marrow* ; Cell Cycle ; Cell Death ; Cytokines ; DNA Fragmentation ; Interleukin-3 ; Mast Cells* ; Nitric Oxide* ; Nitroprusside ; S Phase ; Stem Cell Factor

No abstract available.
Glomus Tympanicum*

PURPOSE: To compare the diagnostic accuracy of Kodak Insight film with other intra-oral films in the detection of dental caries. MATERIALS AND METHODS: Periapical radiographs of 99 extracted human teeth with sound proximal surfaces and interproximal artificial cavities were made on Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Kodak Insight films and automatically processed. Six dentists examined the presence of dental caries using a five-point confidence rating scale and compared the diagnostic accuracy by ROC (Receiver Operating Characteristic) analysis and ANOVA test. RESULTS: The sensitivity of Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Insight film were 0.84, 0.77, 0.75 and 0.79 respectively. The specificity of Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Insight film were 0.97, 0.95, 0.96 and 0.94 respectively. The mean ROC areas (Az) of Kodak Ultra speed, Ektaspeed, Agfa Ektaspeed and Insight film were 0.917, 0.910, 0.894, 0.909 respectively. There was no significant differences between Az of Insight film and other films (p = 0.178). CONCLUSION: Theses results suggested that Kodak Insight film have the comparative diagnostic accuracy of dental caries with Ultraspeed and Ektaspeed films.
Dental Caries* ; Dentists ; Diagnosis ; Humans ; Sensitivity and Specificity ; Tooth ; X-Ray Film

PURPOSE: To compare alveolar bony height of pantomograph with bony height of thin slice, multiplanar reformatted (MPR) Computed Tomograph. MATERIALS AND METHODS: Panoramic radiograms of 12 young adult patients had been taken by one radologic technitian and the measurements were corrected by magnification ratio (1.20). The slice thickness of Multi-detector Computed Tomography (CT) was at least 1mm for the accuracy. The raw CT datas were imported into the V-works 4.0 (CyberMed Corp., Seoul, Korea) and transformed to MPR images. Pantomographic measurements of alveolar bone were compared to CT values by average mean bony height measurements for the accuracy. Inter-, and Intraobserver variability was evaluated. RESULTS: There was no significant differences between height measurement of pantomography and that of CT (P> 0.05). There were no significant differences in either inter- or intra-observer measurements (P> 0.05). CONCLUSION: Pantomography showed relatively high accuracy and precision in measuring alveolar bony height.
Humans ; Observer Variation ; Radiography, Panoramic* ; Seoul ; Tomography, X-Ray Computed ; Young Adult

Deregulation of G1 cyclins has been reported in several human and rodent tumors including colon cancer. To investigate the expression pattern of G1 cyclins in 1,2- dimethyl-hydrazine dihydrochloride (DMH)-induced rat colon carcinogenesis, we studied the expression of cyclin D1 and cyclin E by quantitative reverse transcription-polymerase chain reaction (RT-PCR) analysis and immunohistochemistry (IHC). The mRNA level of cyclin D1 was increased 1.2-fold in adenocarcinomas but not significantly in adenomas, when compared with normal rat colonic mucosa (p<0.05). The cyclin E mRNA level was increased 2.7-fold in adenomas and 3.3-fold in adenocarcinomas (p<0.05). The PCNA mRNA level was also increased 1.9-fold in adenomas and 1.8-fold in adenocarcinomas (p<0.05). Immunohistochemical staining revealed exclusive nuclear staining of the neoplastic cells for cyclin D1, cyclin E and PCNA. Cyclin D1 expression was detected in 56.3% of the adenomas and in 61.5% of the adenocarcinomas examined, whereas cyclin E expression was detected in 87.5% of the adenomas and in 92.3% of the adenocarcinomas. Overall, cyclin D1, cyclin E and PCNA expression was significantly increased at both the mRNA and protein levels in normal colonic mucosa, adenomas and adenocarcinomas, but there was no significant difference in the degree of expression of these genes in adenomas and adenocarcinomas. Our results indicate that the overexpression of cyclin D1 and cyclin E may play an important role during the multistage process of rat colon carcinogenesis, at a relatively early stage, and may disturb cell-cycle control in benign adenomas, and thereafter, participate in tumor progression.
1,2-Dimethylhydrazine/toxicity ; Adenocarcinoma/*chemically induced/metabolism ; Adenoma/*chemically induced/metabolism ; Animals ; Carcinogens/toxicity ; Cell Cycle/drug effects/physiology ; Colon/metabolism ; Colonic Neoplasms/*chemically induced/metabolism ; Cyclin D1/*biosynthesis/genetics ; Cyclin E/*biosynthesis/genetics ; Gene Expression Regulation, Neoplastic ; Immunohistochemistry ; Male ; Proliferating Cell Nuclear Antigen/biosynthesis/genetics ; RNA, Messenger/metabolism ; Rats ; Rats, Sprague-Dawley ; Reverse Transcriptase Polymerase Chain Reaction

PURPOSE: To evaluate the protective effects of epigallocatechin gallate (EGCG) against UV irradiation of cultured human lens epithelial cells. METHODS: We irradiated cultured human lens epithelial cells with a 30-second pulse from a UV lamp with an irradiance of 0.6 mW/cm2. Five minutes and 1 hour after UV irradiation, we administered 0, 5, 10, 15, 25, 50, or 100 uM EGCG. The cell number was measured with a microscopic counting chamber and cell viability was evaluated using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. RESULTS: Compared to untreated cells, the total number of cultured human lens epithelial cells was markedly higher after UV irradiation. In a dose-dependent manner, viability was also higher in EGCG-treated cells. CONCLUSIONS: EGCG increased the cell count and cell viability after UV irradiation of cultured human lens epithelial cells, indicating that EGCG can protect lens epithelium against UV damage.
Antioxidants/*pharmacology ; Catechin/*analogs & derivatives/pharmacology ; Cell Count ; Cell Survival/drug effects ; Cells, Cultured ; Coloring Agents/diagnostic use ; Dose-Response Relationship, Drug ; Epithelial Cells/radiation effects ; Humans ; Lens, Crystalline/cytology/*radiation effects ; Radiation Injuries/*prevention & control ; Radiation-Protective Agents/*pharmacology ; Tetrazolium Salts/diagnostic use ; Thiazoles/diagnostic use ; *Ultraviolet Rays

The authors report a patient with a small traumatic cirsoid aneurysm of the scalp, diagnosed by duplex doppler ultrasonography. This 15-year-old boy was diagnosed as a cirsoid aneurysm by duplex doppler ultrasonogram which revealed an ovoid cystic lesion at left temporal area of scalp containing vascular flow mapping. The gross appearance showed an aneurysm with arteriovenous fistula, consisting of two feeding arteries and two draining veins. Total removal of mass was made and the histological examination revealed an aneurysm which showing irregular contour of inner surface and thickened fibrotic vascular wall without normal arterial layers. Noninvasive duplex doppler ultrasonography before surgical excision or direct puncture embolization of cirsoid aneurysms of the scalp could be recommended as an alternative management option.
Adolescent ; Aneurysm* ; Arteries ; Arteriovenous Fistula ; Humans ; Male ; Punctures ; Scalp* ; Ultrasonography ; Ultrasonography, Doppler* ; Ultrasonography, Doppler, Duplex ; Veins

PURPOSE: To evaluate the protective effects of Epigallocatechin gallate (EGCG) against UV irradiation in cultured human retinal pigment epithelial (RPE) cells. METHODS: UV irradiation was produced by a UV lamp for 30 seconds with an irradiance of 3.3 mW/cm2. After 5 minutes and 1 hour, we administered different concentrations of EGCG (0, 5, 10, 15, 25, 50, 100 uM). The cell count was determined under a microscope using a counting chamber and the cell activity was evaluated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. RESULTS: The cell count of cultured human RPE cells after UV irradiation was markedly increased in the EGCG administration group, compared with the non-administrated group. The cell activity of the cultured human RPE cells after UV irradiation was markedly increased in the EGCG administration group and was increased in a dose-dependent way as determined by the MTT assay. CONCLUSIONS: The administration of EGCG increased the cell count and the cell activity after UV irradiation in cultured human retinal pigment epithelial cells; this suggests that EGCG provided protection against UV damage in cultured human retinal pigmented epithelial cells.
Antioxidants/*pharmacology ; Catechin/*analogs & derivatives/pharmacology ; Cell Count ; Cells, Cultured ; Dose-Response Relationship, Radiation ; Humans ; Pigment Epithelium of Eye/cytology/*drug effects/radiation effects ; Radiation Injuries/pathology/*prevention & control ; Radiation-Protective Agents ; Spectrophotometry ; *Ultraviolet Rays

Uterine didelphys is a congenital malformation characterized by the presence of two separated hemiuteri andhemivaginas, due to lack of midfusion of the Mullerian ducts. We report a case of UD-BHRA(uterine didelphys withblind hemivagina and ipsilateral renal agenesis), a rare type of uterine didelphys charaterized by symptomaticunilateral hematocolpos due to blind hemivagina after menarche and ipsilateral renal agenesis. The MRI findings in22-year-old woman with bilateral ovarian tumors demonstrated two separated uterine horns and cervical and vaginalcanals, with left hematocolpos and left renal agenesis.
Animals ; Female ; Hematocolpos* ; Horns ; Humans ; Magnetic Resonance Imaging ; Menarche ; Mullerian Ducts