1.Ultrastructural Study of Alcohol-Induced Gastric Mucosal Change of Rat.
Kam Rae CHO ; Kun Young KWON ; Eun Sook CHANG
Korean Journal of Pathology 1993;27(4):362-370
In an attempt ultrastructural study of alcohol-induced gastric mucosal change, we selected sixty Sprague-Dawley rats. The rats were administrated with 4 ml of 10% and 40% ethanol enterically and examined by light and electron microscopy. Light microscopically, the thickness of the mucus layer of both 10% and 40% ethanol groups was decreased. The antral mucosa revealed focal inflammatory infiltrates, disturbed glandular arrangements, and significant decrease of mucosal thichness and proper glands. On scanning electron microscopy, flattened or swollen mucosal epithelium and irregularly distributed gastric pits were seen in both experimental groups, and these changes were more severe in the groups of higher concentration and longer duration. On transmission electron microscopy, mitochondrial abnormalities with myelin-like materials and dilatation of endoplasmic reticulum and cytoplasmic blebs were observed. Also the mucus cells show significantly decreased mucus globules, increased fat vacuoles, and large autophagic vacuoles. These alterations were similar to those produced by ethanol in the liver and small intestine. This study indicates that, prolonged administration of ethanol induced chronic gastritis, especially chronic atrophic gastritis.
Rats
;
Animals
2.Capillary Plexus and Vasa of the Rat Lung as Revealed by Scanning Electron Microscope of Corrosion Casts.
Kun Young KWON ; Kam Rae CHO ; Sang Pyo KIM ; Kwan Kyu PARK ; Eun Sook CHANG
Korean Journal of Pathology 1993;27(1):11-18
The pulmonary microvasculatures of rats were studied by injection replicas prepared from Mercox. This medium enabled us to easily obtain consistent, stable, and complete injected replicas of the pulmonary vasculature. In order to investigate the three dimensional structures of the tributaries of the bronchial artery, such as the capillary plexus and vasa vasorum, we performed a scanning electron microscopic(SEM) study of the vascular casts, using Mercox CL-2B as a media. The alveolar capillaries revealed hexagonal or pentagonal rings of vascular networks. In some areas, the vascular rings composed a square network, The bronchial tree was supplied by the bronchial arteries which form a coarse capillary extending as far as the terminal bronchioles. Occasionally the capillary plexus was connected with adjacent capillary networks in and around the alveolar walls. The walls of the pulmonary artery revealed only a single layer of the vasa vasorum, but those of the pulmonary vein were surrounded by more complicated and well developed vasa vasorum than the pulmonary arterial side. The mean diameters of the venous vasa vasorum are greater than the arterial vasa vasorum.
Rats
;
Animals
3.Fine needle aspiration cytology of endodermal sinus tumor of the mediastinum.
Kam Rae CHO ; Sang Pyo KIM ; Kwan Kyu PARK ; Kun Young KWON ; Eun Sook CHANG
Korean Journal of Cytopathology 1993;4(1):57-61
No abstract available.
Biopsy, Fine-Needle*
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Endoderm*
;
Endodermal Sinus Tumor*
;
Mediastinum*
4.Angiolymphoid Hyperplasia with Eosinophilia in Bone: A Case Report
Hyoung Min KIM ; Youn Soo KIM ; In Tak CHU ; Seong Rae CHO ; Eun Deok CHANG
The Journal of the Korean Orthopaedic Association 1994;29(1):330-335
Angiolymphoid hyperplasia with eosinophilia(ALHE) is a benign angiomatous neoplasm which usually arises from skin, blood vessel, soft tissue, heart and rarely from bone. The authors experienced a case of ALHE which involved the distal femur of 35-years old male and treated by marginal excision and autogenous cancellous bone graft with plate fixation.
Angiolymphoid Hyperplasia with Eosinophilia
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Blood Vessels
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Femur
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Heart
;
Humans
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Hyperplasia
;
Male
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Skin
;
Transplants
5.Expression of Green Fluorescent Protein in Both Spodoptera frugiperda Cells and Bombyx mori Larvae by Ac-Bm Hybrid Virus.
Byung Rae JIN ; Hyung Joo YOON ; Eun Young YUN ; Seok Woo KANG ; Eun Sook CHO ; Seok Kwon KANG
Journal of the Korean Society of Virology 1998;28(3):225-232
We have expressed GFP in Sf9 and Bm5 cells or Bombyx by larvae by using Ac-Bm hybrid virus capable of replicating in both Bm5 and Sf9 cells. Genomic DNA of Ac-Bm hybrid virus expressing P-galactosidase was cotransfected with baculovirus transfer vector containing GFP gene, pBacPAK-GFP in Sf9 cells. The Ac-Bm hybrid virus harboring GFP was named as Ac-Bm hybrid virus-GFP. The Ac-Bm hybrid virus-GFP-infected insect cells were easily selected by detecting the emission of GFP from each well of cell culture dish on the UV illuminator. GFP produced by Ac-Bm hybrid virus-GFP in Sf9 and Bm5 cells or B. mori larvae was confirmed by SDS-PAGE and Western blot analysis using GFP antibody. In addition, B. mori larvae infected with Ac-Bm hybrid virus-GFP was apparently appeared fluorescence from the whole body at 5 days postinoculation. The fluorescence of GFP from the hemolymph and fat body of B. mori larvae infected with Ac-Bm hybrid virus-GFP was also observed by fluorescence microscope. In conclusion, our results demonstrated that in baculovirus expression vector system, use of Ac-Bm hybrid virus have an additional advantage of expanded host range for producing recombinant proteins.
Animals
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Baculoviridae
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Blotting, Western
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Bombyx*
;
Cell Culture Techniques
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DNA
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Electrophoresis, Polyacrylamide Gel
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Fat Body
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Fluorescence
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Hemolymph
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Host Specificity
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Insects
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Larva*
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Recombinant Proteins
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Sf9 Cells
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Spodoptera*
6.Congenital Cytomegalic Inclusion Disease combined with Hydrocephalus: A case report.
Kam Rae CHO ; Cheol Hee YUN ; Sang Pyo KIM ; Kwan Kyu PARK ; Eun Sook CHANG ; Taek Hoon KIM
Korean Journal of Pathology 1994;28(4):439-441
This is an autopsy-verifed case of the generalized cytomegalic inclusion disease occuring in a male fetus of a weeks gestation. The fetus revealed hydrocephalus and focal necrosis of brain, focal subcapsular necrosis of liver, and the typical cytomegalic inclusion cells having large acidophilic intranuclear inclusions in the liver, brain, kidney, lung, adrenal gland, pancreas and chorionic villi. Prominent extramedullary hematopoiesis was noted in the liver and kidney. Immuohistochemical staining using anti-cytomegalovirus antibody revealed intranuclear or occasionally intracytoplasmic immunoreactivity in brain, liver, pancreas, lung, kidney, and intestine.
Male
;
Humans
7.Congenital Cytomegalic Inclusion Disease combined with Hydrocephalus: A case report.
Kam Rae CHO ; Cheol Hee YUN ; Sang Pyo KIM ; Kwan Kyu PARK ; Eun Sook CHANG ; Taek Hoon KIM
Korean Journal of Pathology 1994;28(4):439-441
This is an autopsy-verifed case of the generalized cytomegalic inclusion disease occuring in a male fetus of a weeks gestation. The fetus revealed hydrocephalus and focal necrosis of brain, focal subcapsular necrosis of liver, and the typical cytomegalic inclusion cells having large acidophilic intranuclear inclusions in the liver, brain, kidney, lung, adrenal gland, pancreas and chorionic villi. Prominent extramedullary hematopoiesis was noted in the liver and kidney. Immuohistochemical staining using anti-cytomegalovirus antibody revealed intranuclear or occasionally intracytoplasmic immunoreactivity in brain, liver, pancreas, lung, kidney, and intestine.
Male
;
Humans
8.Resting energy expenditure in Korean type 2 diabetes patients: comparison between measured and predicted values
Ji-Sook PARK ; Sung-Rae CHO ; Jung-Eun YIM
Nutrition Research and Practice 2023;17(3):464-474
BACKGROUND/OBJECTIVES:
Estimation of energy demand using resting energy expenditure (REE) is a reasonable approach for optimizing glycemic control and weight management in patients with type 2 diabetes mellitus (T2DM). This study aimed to compare REE predictions and objective measurements in patients with T2DM in Korea.
SUBJECTS/METHODS:
This study enrolled 36 participants with T2DM (age range, 20–60 years).Anthropometric variables including height, weight, waist-hip ratio, blood pressure, body fat, body fat percentage, and total body weight were measured using bioimpedance. REE was evaluated using indirect calorimetry. The measured REE values were compared to values estimated using five predictive equations: the Harris-Benedict, Mifflin, Owen, Food and Agriculture Organization of the United Nations/World Health Organization (FAO/WHO), and Schofield equations. This study evaluated the associations between measured REE values and anthropometric/clinical data, including height, weight, and age, using multivariate linear regression.
RESULTS:
The mean measured REE value was 1891.79 ± 288.03 kcal/day (male), 1,502.00 ± 202.96 kcal/day (female). REE estimates generated from the Mifflin equation showed the largest differences from measured REE values, whereas estimates derived from the FAO/ WHO equation were the closest to the measured REE values. This study also identified associations between measured REE values and various anthropometric/clinical variables.
CONCLUSION
The accuracy of REE prediction equations is critically important in promoting the efficacy of dietary counseling and the effective treatment of diabetes. Our results indicate the need for additional studies informing more suitable methods for determining the energy requirements of Korean patients with T2DM.
9.Maxillary anterior implant restoration with appropriate anterior guidance using T-Scan in a patient with full fixed prostheses.
Rae Kyeong NAM ; Eun Kyoung PANG ; Young Eun CHO ; Eun Jin PARK
The Journal of Korean Academy of Prosthodontics 2017;55(4):419-426
In implant restorations, it is difficult for the patient to percept any symptoms. In addition, they are absent of shock absorbers, which can lead to mechanical failure if stress distribution is not considered. Since maxillary anterior multiple-implant restorations play a significant role in guiding the functional movement of the mandible by distributing lateral force, it is crucial to form appropriate occlusion. The use of the T-scan system is more advantageous in assessing ‘dynamic occlusion’, such as the change of occlusion over time, the amount of tooth contact during functional movement, and assessing the occlusion in the less-visible posterior teeth. The case is reported as it has satisfactory results in harmonious anterior guidance of a maxillary anterior multiple-implant restoration using T-scan analysis.
Humans
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Mandible
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Prostheses and Implants*
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Shock
;
Tooth
10.Overexpression of Mutant p53 in Human Anaplastic Astrocytoma and Glioblastoma Multiforme.
Sang Sook LEE ; Kam Rae CHO ; Cheoul Hee YUN ; Sang Pyo KIM ; Kwan Kyu PARK ; Eun Sook CHANG ; Eun Ik SOHN
Korean Journal of Pathology 1994;28(4):376-380
A total of 30 cases of cerebral gliomas, including 6 cases of low grade astrocytomas, 6 anaplasticastrocytoomas and l8 glioblastomas multiforme, was examined immunohistochemically to demonstrate the overexpression of mutant forms of p53 protein and to evaluate their relationships with histological subtypes. A p53 monoclonal antibody was applied to the routine formalin fixed, paraffin-embedded tissues for this study using microwave-assisted avidin-biotin method. Overexpression of p53 protein was identified in 4 out of 6 anaplastic astrocytomas (66.7%) and in l3 out of l8 glioblastomas multiforme (72.2%). No immunohistochemical positivity of p53 was found in adjacent normal brain tissue, gliosis and 6 cases of astrocytoma. These results suggest that overexpression of mutant p53 may be an important step in the development and progression of malignant astrocytoma, especially of the aggressive subtypes of glioma, including glioblastoma multiforme.
Humans