No abstract available.
Fetus* ; Humans ; Pregnancy, Twin*

BACKGROUND: Telomerase activity in precancerous conditions of lung adenocarcinomas has not been well studied. This study is designed to investigate the role of telomerase in premalignant lesions of urethane-induced mouse lung adenocarcinoma. METHODS: We harvested A/J mouse lung tissues at 3, 6, 9, 12, 28, 41, and 48 weeks after intraperitoneal urethane treatment, and classified each lesion in terms of histologic findings. We examined telomerase activity using a modified version of the telomeric repeat amplification protocol assay using both gel-based and enzyme linked immunosorbent assay methods. An immunohistochemical analysis of proliferating cell nuclear antigen (PCNA) was performed. RESULTS: In urethane-induced mouse lung tissues, it was sequentially developed from hyperplasia, adenoma, and eventually to adenocarcinoma. Telomerase activity began to show a positive level in tissues with no histologically visible nodule after urethane administration. It revealed a statistically significant increase in hyperplasia compared to the "control" lung tissue (p<0.05), which was proportionally elevated relative to adenoma and adenocarcinoma. There was a direct correlation between telomerase activity and the PCNA labeling index (p<0.05). CONCLUSIONS: The elevation of telomerase activity in normal-appearing lung lesions is thought to be a possible marker of early detection of pulmonary adenocarcinoma.
Adenocarcinoma ; Adenoma ; Animals ; Cell Transformation, Neoplastic ; Enzyme-Linked Immunosorbent Assay ; Hyperplasia ; Lung ; Mice ; Precancerous Conditions ; Proliferating Cell Nuclear Antigen ; Telomerase ; Urethane

STATEMENT OF PROBLEM: Branemark or ITI are two currently most widely used implant systems but with contrasting design, surgical and restoration methods. PURPOSE: The purpose of this study was to compare changes and its statistical significance in bone height and shape which may rise due to the differences between two implant systems. Also to analyse the effect of inter-implant distance on annual bone height changes. MATERIAL & METHOD: Those patients who were treated with two or more of either Branemark or ITI implants at posterior mandibular area at Yonsei University Dental Hospital, Implant Clinic were selected. At annual examination appointments, standardised radiographs using parallel technique were taken. Marginal bone and inter-implant crestal bone changes were measured and following results were obtained. RESULTS: 1) When ITI and Branemark system were compared, both annual marginal and inter-implant crestal bone height changes in ITI system in the first two years were smaller than Branemark and they were statistically significant. On the third year, however, there was no statistical difference between two implant systems on their annual bone level changes (p>0.05). 2) The Marginal and inter-implant crestal bone changes were compared when inter-implant distance was less than 4mm. Statistically significant bone level changes were noted on the first year only for ITI implants but in the first and second year for Branemark implants (p>0.05). 3) When comparing angulation changes between marginal bone and implant fixture, ITI system had smaller angulation changes but the annual changes were not statistically significant (p>0.05). CONCLUSION: Within the limitation of this study, it could be concluded that Branemark implant systems had more changes in marginal and inter-implant crestal bone level in the first and second year after loading with statistical significance. Further studies are recommended to see the effects of these bone loss during the first and second year after loading on the long term prognosis of Branemark Implants.
Appointments and Schedules ; Humans ; Prognosis

PURPOSE: Learning the concepts of pathology can be facilitated by repeated learning situations with illustrative pathology images. Virtual microscopes are digital facsimiles of glass slides that can be viewed on a computer screen. This study was designed to evaluate the possibility of using virtual microscopes as a teaching modality in the pathology laboratory. METHODS: The virtual microscope was produced from high resolution images scanned by an exclusive slide scanner from newly made teaching glass slides. The final teaching material was put up on personal computers in the computer laboratory, classroom, and medical library. RESULTS: This material was easily accessed by exclusive viewers. The students readily adapted to the use of virtual microscopes. The quality of the images in this material was appropriate for viewing. The response from the students displayed highly significant differences between the traditional and virtual microscopes, with the virtual microscope being preferred. CONCLUSION: The virtual microscopes in this study were helpful for medical students studying pathology. The results of this implementation suggest that virtual microscope technology may be extended to other educational venues where traditional microscopes and photomicrographs are currently used.
Education, Medical ; Glass ; Humans ; Learning ; Libraries, Medical ; Microcomputers ; Pathology* ; Students, Medical ; Teaching Materials*

BACKGROUND: It is debatable whether psychiatric problems are overrepresented in the epileptic patient population. In addition, the significance of MMPI elevations in epileptic patients is still uncertain. This study attempted to find out MMPI profile characteristics of patients with medically refractory epilepsy (MRE). METHODS: MMPI was administered to 172 MRE patients and 139 normal controls. RESULTS: In terms of the mean value of MMPI scales, the MRE patients group had normal mean values comparable to the normal control group. However, the MRE patients could be classified into three subgroups by a multivariate cluster analysis, which include a subgroup with normal profile group (41% of patients), neurotic profile group (elevated Hs-D-Hy scales; 19% of patients), and psychiatric profile group (elevated Pa-Pt- Sc & Hs-D-Hy scales; 40% of patients). CONCLUSIONS: This study shows that the majority of MRE patients have abnormal MMPI profiles and suggests that psychiatric disorders or problems might be common in MRE patients. (J Korean Neurol Assoc 19(3):226~231, 2001)
Epilepsy* ; Humans ; MMPI* ; Psychotic Disorders ; Weights and Measures

Liver cell adenoma is uncommon and most often affects women of reproductive age; it is often associated with use of oral contraceptives. It is a very rare benign tumor of the liver in males and associated with use of anabolic steroids or glycogen storage disease type I. The surgical treatment remains controversial. We experienced 3 cases of male liver cell adenoma without use of anabolic steroids or glycogen storage disease. We performed right lobectomy of liver in 2 cases of mass on right lobe and performed mass enucleation with cholecystectomy in another case of mass on left medial segment.
Adenoma, Liver Cell* ; Cholecystectomy ; Contraceptives, Oral ; Female ; Glycogen Storage Disease ; Glycogen Storage Disease Type I ; Humans ; Liver* ; Male* ; Steroids

Ictal vomiting is a rare clinical manifestation of temporal lobe epilepsy. This manifestation is considered a clinical lateralizing sign pointing toward seizure activity within the nondominant temporal lobe. However, we have experienced a case of ictal vomiting associated with temporal lobe epilepsy within the dominant hemisphere. The ictal vomiting occurred early in the course of the seizure when rhythmic discharges predominantly involved the left temporal lobe. This patient underwent a left anterior temporal lobectomy and experienced markedly reduced seizure frequency for more than 2 years.
Anterior Temporal Lobectomy ; Epilepsy ; Epilepsy, Temporal Lobe* ; Humans ; Seizures ; Temporal Lobe* ; Vomiting*

PURPOSE: The education of the patients is an effective component of comprehensive care, especially in patients with epilepsy. We developed an epilepsy educational program designed to improve the knowledge and understanding of the natural clinical course, the treatment, and prognosis of epilepsy. We evaluated the efficacy of this educational program to epilepsy patient's knowledge of their disorder and quality of life. METHODS: We studied 224 patients with epilepsy from Dongsan Epilepsy Center. All patients completed the Knowledge and Quality of Life in Epilepsy-31 (QOLIE-31) questionnaire before a one-day educational program was completed. Six months after the educational program was given, patients completed the same questionnaire. The results of the two surveys were compared. RESULTS: In the initial questionnaire, about 60% of the patients thought that epilepsy is not related with head trauma. About 40% of the patients thought that epilepsy is a genetic disorder. Over 80% of the patients thought that behavior changes are not related to epilepsy. Over 90% of the patients had correct responses about taking antiepileptic drugs. However, only 60% of the patients had their ideas regarding proper social activity correct. After completing the educational course, the results of the follow-up questionnaires were markedly improved concerning the patients' knowledge of epilepsy. In contrast, the quality of life measures changed a little. CONCLUSION: An epilepsy educational program for patients improves their knowledge of epilepsy. This study was performed with only one education workshop, which is not sufficient to improve the quality of life measures. A well-regulated, systematic educational program is needed to efficiently improve the lives of epileptic patients.
Anticonvulsants ; Craniocerebral Trauma ; Education* ; Epilepsy* ; Follow-Up Studies ; Humans ; Prognosis ; Quality of Life* ; Surveys and Questionnaires

Traditional adipose tissue transplantation has unpredictable viability and poor absorption rates. Recent studies have reported that treatment with platelet-rich plasma (PRP), adipose-derived stem cells (ASCs), and stromal vascular fraction (SVF) are related to increased survival of grafted adipose tissue. This study was the first simultaneous comparison of graft survival in combination with PRP, ASCs, and SVF. Adipose tissues were mixed with each other, injected subcutaneously into the back of nude mice, and evaluated at 4, 8, and 12 weeks. Human adipocytes were grossly maintained in the ASCs and SVF mixtures. Survival of the adipose tissues with PRP was observed at 4 weeks and with SVF at 8 and 12 weeks. At 12 weeks, volume reduction in the ASCs and SVF mixtures were 36.9% and 32.1%, respectively, which were significantly different from that of the control group without adjuvant treatment, 51.0%. Neovascular structures were rarely observed in any of the groups. Our results suggest that the technique of adding ASCs or SVF to transplanted adipose tissue might be more effective than the conventional grafting method. An autologous adipose tissue graft in combination with ASCs or SVF may potentially contribute to stabilization of engraftment.
Adipocytes/*transplantation ; Adipose Tissue/cytology/*transplantation ; Adult ; Animals ; Female ; *Graft Survival ; Humans ; Mice ; Mice, Inbred BALB C ; Mice, Nude ; *Platelet-Rich Plasma ; Stem Cells ; Stromal Cells/*transplantation ; Transplantation, Heterologous

BACKGROUND: Gastric carcinoma with lymphoid rich stroma (GCLRS) is an undifferentiated gastric carcinoma with heavy lymphocytic infiltrate. In order to clarify the relationship between lymphocytic infiltration and apoptosis in gastric carcinoma, we investigated the association of apoptosis with apoptotic proteins and Epstein-Barr Virus (EBV) expression in GCLRS. METHODS: We performed immunohistochemical stains for bcl-2, bax and in situ hybridization for EBER (Epstein-Barr virus encoded RNA)-1 and the terminal deoxynucleaotidil transferase mediated dUTP-digoxigenin nick end labelling (TUNEL) technique using 47 out of 1635 gastric carcinoma cases. RESULTS: The prevalence of GCLRS was 1.47% (24/1635). The prevalence of EBV involvement in GCLRS (79%, 19/24) was significantly higher than that of gastric carcinoma with lymphoid poor stroma (GCLPS) (8.7%, 2/23). The immunohistochemical stain for bcl-2 revealed negative expressions in all cases, but that of bax was positive for in all cases. bax was significantly correlated with the apototic index (P<0.05). There was no statistical significance between lymphocytic infiltration and apoptosis. The lymphocytic infiltration significantly correlated with the expression of EBV (P<0.05) but not with survival rate and apoptosis. However, most of the GCLRS displayed low clinical stages(stage IA, B), and we suggest that was a proper reason for a good prognosis. CONCLUSIONS: These results support that EBV is associated with GCLRS, and there is no relationship between apoptosis and bcl-2, bax and prognosis. They also suggest that EBV infection play an important role in the gastric carcinogenesis.
Apoptosis* ; Carcinogenesis ; Coloring Agents ; Epstein-Barr Virus Infections ; Herpesvirus 4, Human* ; Humans ; In Situ Hybridization ; Prevalence ; Prognosis ; Stomach ; Survival Rate ; Transferases