OBJECTIVE AND METHODS: To determine correlations among ambulatory renin activity, ambulatory blood pressure and microalbumin excretion rate, 66 Korean essential hypertensives were studied after 4 week wash-out period. The ambulatory blood pressure was monitored every 30 minutes and mean BP were calculated automatically. Urinary microalbumin excretion rate(UAER) and ambulatory plasma renin activity(aPRA) collected at mid-day were measured by radioimmunoassays. Subjectives were divided into 2 groups by aPRA value(2ng/ml/hr). RESULT: 14 cases were high renin group and 52 cases low renin group. The mean BP were 148.83/94.69mmHg in low renin group, and 146.57/98.07mmHg in high-renin group without difference. UAER were not different also between both groups. 23.07%(4/14) of non-dippers were included in high renin group and 25.58%(12/52) in low renin group without statistical difference. The aPRA was significantly related to UAER and systolic and diastolic mean blood pressure. Also UAER was related significantly to day mean blood pressures. CONCLUSION: Thus aPRA is thought to be a meaningful indicator to predict hypertensive renal target organ damage as well as blood pressure measured with 24-hr ABPM.
Blood Pressure* ; Hypertension* ; Plasma* ; Radioimmunoassay ; Renin*

This study was performed ta evaluate difference of colposcopic findings between carcinoma in situ and microinvasive carcinoma. From August l, 1988 through November 30,1989, the conixation was undertaken in 138 patients. We compeied colposcpic findings with hiatologic diagnoiis on 1656 seetions. Comparison between the microinvasive carcinorna and the carcinoma in situ groups showed a significant higher incidence of large exoeervtcal lesion size(>3/2 33.9% vs. 1.2%), circumscribved location around external cervical os.(75.0% vs, 51.2%), combined abnormal colposcopic findings(19.6/a vs. 3. 7%) and deep endocervical involvement( >lcm : 23,2% vs. 7. 3%). (P<0.01) Granular area was showed 11% incidence of the worst histologic diagnosis.
Carcinoma in Situ* ; Cervix Uteri* ; Diagnosis ; Female ; Humans ; Incidence

Sertoli-Leydig cell tumor or Brenner tumor is a relatively rare ovarian tumor. Other associated elements in the form of epithelial, mesenchymal, and tumor components of each tumor have been reported. The Sertoli-Leydig cell tumor with a Brenner tumor element has not been documented in the literature, so we are reporting on a case of Sertoli-Leydig cell tumor coexisting with a Brenner tumor. This 62-year-old woman presented with a 4 year history of lower abdominal mass and vaginal bleeding. Exploratory laparotomy was done. The left ovary showed a multiseptated, cystic, yellow-white solid mass, measuring 17.0x13.0x5.0 cm and weighing 985.0 gm. Microscopic examination revealed a tubular or trabecular arrangement of the Sertoli cells and variable numbers of Leydig cells. There were several tumor nests with cystic spaces composed of ovoid cells showing longitudinal nuclear grooving. Sarcomatoid or heterologous elements were not found.
Female ; Humans

No abstract available.
Androgen-Insensitivity Syndrome* ; Male

No abstract available.
Ultrasonography*

E-cadherin is a calcium-dependent epithelial adhesion molecule which plays a role in the initial step of invasion of cancer cells. The step that follows the migration of separated tumor cells is a proteolytic lysis of basement membrane and extracellular matrix by protease of epithelial and endothelial cells such as matrix metalloproteinase (MMP). Vascular endothelial growth factor (VEGF) is known to be an endothelial cell-specific powerful mitogen as well as a vascular permeability factor. This study is aimed to evaluate the correlation between expression of these factors and pathologic or clinical variables and the roles and prognostic significance of those factors in squmous cell carcinoma and adenocarcinoma of the lung. Immunohistochemical stains were performed for E-cadherin, MMP-2, and VEGF in surgically resected specimens from 90 patients with squmous cell carcinoma and adenocarcinoma of the lung. Mean age of the patients was 59.7 years. Histologic type was categorized into 56 cases of squamous cell carcinoma and 34 cases of adenocarcinoma. Mean survival period of the 35 patients was 54 months. The immunohistochemical stains for E-cadherin, MMP-2, and VEGF revealed positive reaction in 67 cases (74.4%), 43 cases (47.8%), and 34 cases (37.8%), respectively. The expression of E-cadherin was higher in adenocarcinoma (82.4%) than in squamous cell carcinoma (69.6%). MMP-2 was expressed in the tumor cells, especially those invading into the surrounding stroma. The expression of MMP-2 was significantly correlated with the survival rate (p<0.05). The expression of VEGF in the tumor cells was significantly higher in cases with lymph node metastasis (p<0.05). In conclusion, these findings suggest that the expression of MMP-2 and VEGF predict poor prognosis of patients with squmous cell carcinoma and adenocarcinoma of the lung and that VEGF may play a role in tumor metastasis.
Adenocarcinoma* ; Basement Membrane ; Cadherins* ; Carcinoma, Squamous Cell* ; Coloring Agents ; Endothelial Cells ; Extracellular Matrix ; Humans ; Lung* ; Lymph Nodes ; Neoplasm Metastasis ; Prognosis ; Survival Rate ; Vascular Endothelial Growth Factor A*

A defective HIV-1 helper virus DNA, pHyPC, was assembled by deleting the RNA packaging signal, env, nef and the 3'LTR sequences. HIV-1 like virus particles that carry the HIV-1 receptor, CD4 were generated by coexpression of pHyPC and plasmid DNAs encoding different chimeric CD4 proteins. The CD4 particles, sharing the CD4 ectodomain, precisely fused to different membrane anchors. CD4(+) particles specifically bound to HIV-1 Env expressing cells, but any signs of infection into these cells were not detected. Binding was only partially blocked by either polyclonal anti-CD4 antibodies or by high concentrations of soluble CD4. Suprisingly, CD4(+) particles also adsorbed to HeLa, CHO, NIH3T3 and COS-7 cells in the absence of HIV-1 Env expression. Adsorption was comparable in strength and speed to the highly specific CD4-Env interaction. CD4(-) particles exhibited only background levels of binding. Cell binding was CD4- dependent, but it was independent of the cell type from which the CD4(+) particles originated. Interestingly, CD4-dependent/Env-independent binding was only found when CD4 was present on virus particles. This suggests that the micro-environment of CD4 on virus particles uniquely expose this new cell binding activity. Its high affinity could explain in part why infection of Env(+) cells by CD4(+) particles was not detected. Further experiments will be required to evlauate whether this strong membrane interaction could represent one step in the multiple-step viral entry process.
Adsorption ; Animals ; Antibodies ; COS Cells ; DNA ; Helper Viruses ; HIV-1* ; Membranes ; Plasmids ; Product Packaging ; RNA ; Virion

No abstract available.
Carcinoma, Squamous Cell* ; Cervix Uteri* ; Collagen Type IV* ; Female ; Laminin*

Background: This study is to identify the factors that affect job satisfaction, psychological ownership, and job engagement of dental hygienists on job performance and use them as basic data for manpower management of dental hygienists. Methods: The survey was conducted by 344 clinical dental hygienists working in dental medical institutions. The collected data is PASW Statistics ver. 20.0 was used to analyze. Results: The job satisfaction level of the dental hygienist was 3.38±0.52, and the question that ‘I feel that my ability to solve problems has improved compared to the past.’ was 3.92±0.80. There were significant differences in job satisfaction, psychological ownership, and job engagement according to general characteristics in age, marriage, education, career, current work experience, and position. There were significant differences in job performance according to general characteristics in age, marriage, education, career, current work experience, position, and number of dental hygienists. Factors influencing job performance were practical activities, income, patient relations, absorption, vigor, dedication, and the number of dental hygienists. Conclusion Finding different ways to use psychological ownership and job engagement through the job satisfaction of a dentalhygienist, and to and to utilize it as basic data for efficient manpower management through job performance.

Background: Job satisfaction of dental hygienists has been discussed continuously in dental hygiene research. It has been the most representative performance variable in dental and human resource management. However, in quantitative research, most of the studies have analyzed the causal relationship with variables related to dental hygienists’ job satisfaction. The existing qualitative research contains only the studies that targeted dental hygienists with an experience of more than 10 years. The present study aimed to understand and to characterize the job satisfaction of dental hygienists with an experience of 2 to 10 years and to compare it with the qualitative research on dental hygienists with an experience of 10 or more years. Methods: An in-depth interview of dental hygienists with 2 to 10 years of experience working in 10 dental clinics was conducted.For data analysis, Giorgi’s analysis method was used. Results: After analyzing the meaning of job satisfaction of dental hygienists, 180 semantic words and 19 subcategories were derived. The results of the interview were categorized into for central meanings: recognition and rewards, work experience and ability improvement, occupational characteristics, and work characteristics. Recognition and rewards included workplace recognition, patient recognition, self-effort and recognition, and the feeling of being rewarded. Work experience and ability improvement included various work experiences and factors relates to improving the work ability. Occupational characteristics included professional job, interest and persistence, job extensibility, and no burden of employment. Work characteristics included working conditions and separation of work and private life. Conclusion The development of tools to measure the level of dental hygienists’ job satisfaction after long-term service and to conduct follow-up research regarding ways and effects to improve job satisfaction is needed.