1.The effects of token economy program for a psychiatric patient with regressive behavior.
Myung Won JUNG ; Min Kyou LEE ; Kyung Chae JOO
Journal of Korean Neuropsychiatric Association 1993;32(2):259-265
No abstract available.
Humans
;
Token Economy*
2.The Role of Ito Cell in Hepatic Fibrosis after Common Bile Duct Ligation: inhibitory role of vitamin A in Ito cell.
Kyung Hee PARK ; Sang Han LEE ; Jong Min CHAE
Korean Journal of Pathology 1995;29(1):1-9
The purpose of this study was to investigate the inhibitory role of vitamin A with respect to activation of Ito cells in fibrosis of the rat liver induced by common bile duct ligation(CBDL). The liver was examined by immunohistochemical staining for a-smooth muscle actin,the known marker of activated Ito cells, and light and electron microscopy after CBDL andCBDL with intraperitoneal injection of retinoic acid (Sigma, USA) 1 mg/Kg in 3 times per week. The results were sumrrlerized as follows: After CBDL, the bile ductules were markedly proliferated in the periportal areas extending toterminal hepatic veins. Interstitial fibrosis and inflammatory cell infiltration appeared, however,cholestasis was minimal. Retinoic acid treatment with CBDL decreased bile ductular proliferationand interstitial fibrosis compared to CBDL only. After CBDL, proliferated and activated Ito ceIs showing positive reaction in smooth muscle actin were present in the periductular andperisinusoidal areas, and areas of increased interstitial fibrosis. Activated ito cells weredecreased in number after CBDL with vitamin A treatment. Electron microscopically,intracytoplasmic fat droplets and the cytoplasmic processes of Ito cells were decreased afterCBDL. Myofibroblasts were frequently appeared in the interstitial fibrosis after CBDL. But,intracytoplasmic fat droplets of Ito cells were well preserved, and myofibroblasts were found lessfrequently after CBDL with vitamin A treatment. The results suggest that vitamin A plays an inbitory role in the activation and fibrogenesis ofIto cells after CBDL.
Rats
;
Animals
3.Ultrastructural Feature of Proximal Convoluted Tubular Cells of Rat Induced by Gentamicin.
Byoung Yuk LEE ; Tae Jung SHON ; Jong Min CHAE
Korean Journal of Pathology 1998;32(1):43-50
Myeloid body formation is an ultrastructural feature of gentamicin induced nephrotoxicity in human being and experimental animals. The origin of the myeloid body is not satisfactorily understood and morphological verification of the developing process of this structure is not fully accomplished. We injected 100 mg/kg/12 hour of gentamicin in 20 Spraque-Dawley rats and examined the ultrastructural feature of the proximal convoluted tubular cells of the kidney every 30 minutes in the first 4 hours, and in 5 hours, 6 hours, 12 hours, 24 hours and 48 hours after injection of gentamicin, with a TEM and a SEM. Myeloid bodies were noted as concentric layers of membranous structures of degenerated endoplasmic reticulum and mitochondria in the lysosome. The number and size of the myeloid body containing lysosomes were increased with time. We can deduce from this observation that injured cell organelles by diffusible gentamicin within the cells are autophagocytosed by lysosomes which were also injured by the drug from pinocytotic vesicles, and incompletely digested organellar remnants are retained in the lysosomes as myeloid bodies. So we think that the myeloid body formation is a result of an exaggerated and a pathologic autophagocytic process due to cell injury induced by gentamicin.
Animals
;
Endoplasmic Reticulum
;
Gentamicins*
;
Humans
;
Kidney
;
Lysosomes
;
Mitochondria
;
Organelles
;
Rats*
4.The Effects of Nifedipine and Allopurinol on Shock Wave Induced Acute changes of Rabbit Ureter.
Chun Kwan LEE ; Jong Min CHAE ; Houng Gyu SOHN
Korean Journal of Urology 2001;42(1):16-22
PURPOSE: Introduction of shock wave lithotripsy has provided an avenue for dealing with many urinary stones noninvasively. Although shock wave is known to cause pathologic changes in various organ, little is k nown about its effect on the ureter and recovery after shock wave, the target organ in SWL of injury induced by shock wave and the potential protective effect of allopurinol and nifedipine against shock wave. MATERIALS AND METHODS: A total 24 rabbits were assigned to 2 groups. 12 rabbits received allopurinol(10mg.each) and nifedipine (1mg.each) that were given orally 3 times a day for 5 days starting the night before SWL. The other 12 rabbits reseived no medication. The left lower Ureter segments of 24 rabbits were removed ureter. Groups of 8 rabbits(4were medication group and 4, no medication group) were sacrificed 1, 3 and 5 days after shock wave exposure. The histomorphological alterations were examined under light and transmission electron microscopy. RESULTS: The epithelial cells disclosed no change after shock wave application. Histologically the muscular layer was the most affected part of ureter. There was interstitial and intracellular edema on light microscopy and made chromatin and mitochondrial changes at the subcellular level. The adventitial layer wes also edematous. This chanfes were prominent on day 1and 3 and returned to normal on day 5. The medication group showed less severe features of injury, compared with the no medication group. CONCLUSIONS: Electromagnetic shock waves produce reversible morphological changes in rabbit ureteric muscle and allopurinol and nifedipine may have its role in protecting the tissue injury produced by high energy shock waves.
Allopurinol*
;
Chromatin
;
Edema
;
Epithelial Cells
;
High-Energy Shock Waves
;
Lithotripsy
;
Magnets
;
Microscopy
;
Microscopy, Electron, Transmission
;
Nifedipine*
;
Rabbits
;
Shock*
;
Ureter*
;
Urinary Calculi
5.The effects of cognitive expectancies of alcohol on the drinking.
In Bok HWANG ; Min Kyou LEE ; Kyung Chae JOO
Journal of Korean Neuropsychiatric Association 1993;32(6):962-970
No abstract available.
Drinking*
6.Four Cases of Milignant Tumors of the Eye and Adnexa: A caces of Adenoiod cystic Ca., a case of Anaplastic Ca. and two cases of Milignant melanomas.
Byung Sik CHAE ; Kyung Chull LEE ; Sang Min KIM
Journal of the Korean Ophthalmological Society 1969;10(3):57-61
The athors have presented recently treated 4 cases of malignant tumors of the eye and adnexa. 1. All of them were rapidly aggrevated after previous incompleted surgical management (3 cases) or postponement 01 operation (1 case). 2. Three cases of them except adenoid cystic Ca. were recurred after orbital exenteration. 3. The authors were concluded that the poor prognosis is due to its nature of malignancy and delayed radical surgical management.
Adenoids
;
Melanoma*
;
Orbit
;
Prognosis
7.Sarcoma-like Mural Nodule in Ovarian Mucinous Cystadenocarcinoma: A case report.
Suk Hee LEE ; Min Hee JUNG ; Byung Yuk LEE ; Jong Min CHAE
Korean Journal of Pathology 1996;30(9):854-857
We describe an ovarian mucinous cystadenocarcinoma with a sarcoma-like mural nodule. In the literature, rare cases of ovarian mucinous tumors have been described which contain foci of undifferentiated carcinoma, sarcoma, and sarcoma-like nodules. The distinction between these lesions is important because of poorer prognosis of true sarcoma and anaplastic carcinoma than sarcoma-like mural nodules. This case shows different results of immunohistochemical stain for anaplastic carcinoma.
8.Lipoma of the Heart: An Autopsy case report.
Min Hee JUNG ; Suk Hee LEE ; Sang Han LEE ; Jong Min CHAE ; Jung Sik KWAK
Korean Journal of Pathology 1996;30(8):746-748
Lipomas of the heart are benign neoplasms and have rarely been described. Due to the fact that they normally cause no symptoms, diagnosis is often purely accidental. Because of the rarity of these tumors, it seems worthwhile to present an example studied at autopsy. It was associated with the sudden death of a 15-year-old boy. The tumor arose from the wall of the left ventricle and occupied the pericardial cavity, measuring 13x7x6 cm in size. The tumor was whitish-yellow, translucent, and soft. Microscopically, the tumor was composed of mature adipose tissue which extended between muscle fibers. This current case, the giant cardiac lipoma is believed to produce disturbances of the conduction system and distrubances of cardiac filling.
9.The Development and Effects of Metaverse-based Core Nursing Skill Contents (CNSC) for Nursing Students: Drainage Management
Min Kweon AHN ; Min Jeong CHAE
Journal of Korean Academy of Fundamental Nursing 2024;31(4):447-457
Purpose:
This study aimed to assess the impact of metaverse-based content for teaching core nursing skills (CNSC) to undergraduate nursing students.
Methods:
A non-equivalent control group was selected using a non-synchronized design. A total of 71 participants (34 in the experimental group and 37 in the control group) were recruited between May and June 2023 in Gwangju Metropolitan City. The CNSC included scenarios focused on drain management. Data analysis was conducted using SPSS version 25 for Windows.
Results:
Upon completing the CNSC, significant differences were observed between the groups in core nursing skills knowledge (t=7.97, p<.001), confidence in performing core nursing skills (t=5.79, p<.001), and clinical competency (t=2.26, p=.003).
Conclusion
The findings suggest that the CNSC designed for undergraduate nursing students was effective in enhancing their knowledge of core nursing skills, confidence in skill performance, and clinical competency.
10.The Development and Effects of Metaverse-based Core Nursing Skill Contents (CNSC) for Nursing Students: Drainage Management
Min Kweon AHN ; Min Jeong CHAE
Journal of Korean Academy of Fundamental Nursing 2024;31(4):447-457
Purpose:
This study aimed to assess the impact of metaverse-based content for teaching core nursing skills (CNSC) to undergraduate nursing students.
Methods:
A non-equivalent control group was selected using a non-synchronized design. A total of 71 participants (34 in the experimental group and 37 in the control group) were recruited between May and June 2023 in Gwangju Metropolitan City. The CNSC included scenarios focused on drain management. Data analysis was conducted using SPSS version 25 for Windows.
Results:
Upon completing the CNSC, significant differences were observed between the groups in core nursing skills knowledge (t=7.97, p<.001), confidence in performing core nursing skills (t=5.79, p<.001), and clinical competency (t=2.26, p=.003).
Conclusion
The findings suggest that the CNSC designed for undergraduate nursing students was effective in enhancing their knowledge of core nursing skills, confidence in skill performance, and clinical competency.