1.Subcutaneous tissue calcification in a patient with rheumatoid arthritis.
Dong Hyun KIM ; Kyung Jin KIM ; Sung Min KWON ; Sung Ouk CHA ; Jung Ouk LEE
Yeungnam University Journal of Medicine 2016;33(2):120-124
Subcutaneous tissue calcification in rheumatic diseases usually occurs in connective tissue diseases, such as systemic lupus erythematosus, scleroderma, and dermatomyositis. Domestic cases of calcification in rheumatoid arthritis have not been reported. The mechanism of subcutaneous tissue calcification may differ depending on the cause and it can develop on all parts of the body. Calcification occurring in rheumatic diseases is a major mechanism of tissue damage caused by chronic inflammation. No standard therapy for calcification has been established; however, many studies have reported on medical and surgical treatment. We report on subcutaneous tissue calcification in a rheumatoid arthritis patient tissue calcification on both sides of the buttocks, the upper limbs, and the lower limbs.
Arthritis, Rheumatoid*
;
Buttocks
;
Calcinosis
;
Connective Tissue Diseases
;
Dermatomyositis
;
Humans
;
Inflammation
;
Lower Extremity
;
Lupus Erythematosus, Systemic
;
Rheumatic Diseases
;
Subcutaneous Tissue*
;
Upper Extremity
2.Application of Alvarado Score in Patients with Suspected Appendicitis.
Sung Ouk JANG ; Byung Seok KIM ; Duk Jin MOON
The Korean Journal of Gastroenterology 2008;52(1):27-31
BACKGROUND/AIMS: Though acute appendicitis is one of the most common surgical conditions, the diagnosis in patients with equivocal signs can be difficult. Many patients with suspected appendicitis are admitted for observation. We designed this study to investigate whether the Alvarado score can be used as an admission criterion. METHODS: This is a prospective study comprising consecutive patients who attended the emergency room with right lower abdominal pain from January 2007 to March 2007. Patients were scored with the Alvarado score and if they were admitted, had a second scoring in the ward. Patients who were not admitted were told to attend the clinic the next day and patients who did not attend the clinic were interviewed by telephone. RESULTS: Total of 132 patients (M=83, F=49) were included and 105 patients were admitted for observation. Eighty-seven patients had surgery with the intention to treat appendicitis and 10 patients did not have appendicitis. The diagnosis of acute appendicitis was highly accurate for an Alvarado score above 6 (90.9%). Patients with a score 4 or less in the ward as well as in the emergency room did not have appendicitis. Of the patients with appendicitis, 49% (38/77) had higher scores in the ward than initial score at the emergency room. CONCLUSIONS: None of the patients with a score of 4 or less had appendicitis. They did not need admission. The Alvarado score can be used as an admission criterion in patients with suspected appendicitis.
Acute Disease
;
Adolescent
;
Adult
;
Aged
;
Aged, 80 and over
;
Appendectomy
;
Appendicitis/*diagnosis/surgery
;
Child
;
Child, Preschool
;
Diagnosis, Differential
;
Emergency Service, Hospital
;
Female
;
Humans
;
Male
;
Middle Aged
;
Patient Admission/standards
;
Sensitivity and Specificity
;
Severity of Illness Index
3.Effects of Nicotine on the Expression of Cell Cycle Regulatory Proteins of Human Gingival Fibroblasts.
Tak KIM ; Jae Ho KIM ; Sung Hee PI ; Eun Cheol KIM ; Yong Ouk YOU ; Hyung Keun YOU ; Hyung Shik SHIN
The Journal of the Korean Academy of Periodontology 2001;31(3):597-610
Normal gingival fibroblasts functioning is fundamental for the maintenance of periodontal connective tissue as well as wound healing. Nicotine have been found to affect DNA synthesis and cell proliferation, which appear to depend on the type of cells. This in vitro study was done to determine the effects of nicotine, a major component of tobacco, on cell proliferation, viability, activity, cell cycle distribution, and expression of cell cycle regulatory proteins in human gingival fibroblasts. Nicotine has been tested for 2 days or 4 days in 5 different concentrations; 0.1 microgram/ml; 1 microgram/ml; 10 microgram/ml; 100 microgram/ml; 1000 microgram/ml. To assess cell proliferation and viability, viable and non-viable cells were counted by hemocytometer; to evaluate cellular activity, MTT assay was employed; to analyze cell cycle distribution, fluorescent propidium iodide-DNA complex were measured using fluorocytometer; to determine the expression of cell cycle regulatory proteins, western blot analysis was performed. After 2 days and 4 days incubation respectively, at concentrations of 1 microgram/ml - 1000 microgram/ml, nicotine significantly inhibited proliferation comparing to non-supplemented controls. The cell viability was significantly decreased after 2 days and 4 days at concentrations of 1 microgram/ml - 1000 microgram/ml and at 10 microgram/ml - 1000 microgram/ml respectively. After 2 days and 4 days, the cellular activity was significantly decreased at concentrations of 10 microgram/ml - 1000 microgram/ml. Treatment with 100 microgram/ml nicotine for 48 hours caused an increase in the proportion of G1-phase cells (from 46.41% to 53.46%) and a decrease in the proportion of S-phase cells (from 17.80% to 14.27%). The levels of cyclin D1 and CDK 4 proteins in nicotine-treated fibroblasts were lower than that of controls, whereas the levels of p16 and pRB were higher than that of controls. These results suggest that the decrease of cell proliferation and lengthened Gap phases (G1) by nicotine may due to the increased expression of p16 and pRB as well as decreased expression of cyclin D1 and CDK 4 in human gingival fibroblasts.
Blotting, Western
;
Cell Cycle Proteins*
;
Cell Cycle*
;
Cell Proliferation
;
Cell Survival
;
Connective Tissue
;
Cyclin D
;
Cyclin D1
;
DNA
;
Fibroblasts*
;
Humans*
;
Nicotine*
;
Propidium
;
Tobacco
;
Wound Healing
4.Effects of Cyclosporin A on the Cell Cycle Regulation of Human Gingival Fibroblasts.
Sung Hee PI ; Dae Kyum KIM ; Tak KIM ; Yong Ouk YOU ; Hyung Keun YOU ; Hyung Shik SHIN
The Journal of the Korean Academy of Periodontology 2001;31(3):611-623
Cyclosporin A is a cyclic polypeptide produced by the metabolism of fungi. It is widely used at present as immunosuppressive treatment following organ transplants. It is also used to deal with autoimmune diseases such as rheumatoid arthritis or type II diabetes. Gingival hyperplasia is one of the most frequent side-effects associated with the prescription of Cyclosporin A. The mechanisms involved in Cyclosporin A induced gingival hyperplasia are not yet clear. In vitro Cyclosporin A promotes proliferation of gingival fibroblasts, that Cyclosporin A act as a mitogen. Its action is based on mitosis of gingival fibroblasts regulated by cell cycle regulatory proteins. It was the purpose of the present study to examine the effects of Cyclosporin A on human gingival fibroblasts by means of biological and biochemical criteria. In this present study, we examined change of cell proliferation, cell activity, cell viability and cell cycle progression after application of Cyclosporin A. We also examined expression of cell cycle regulatory proteins by western blot analysis. Human gingival fibroblasts were cultured for 48 hours with application of Cyclosporin A at concentrations of 0.01, 0.1, 1, and 10 ng/ml. Cyclosporin A(1 ng/ml) significantly increased the cell activity of gingival fibroblast. Proliferation and viability of gingival fibroblasts were also increased in group treated with 1 ng/ml of Cyclosporin A compared to control group. In the cell cycle analysis, S phase was increased and G1 phase was decreased in the group treated with 1 ng/ml of Cyclosporin A. Cyclosporin A increased the expression of cdk4 and inhibited the expression of pRB and p21. These results suggest that 1 ng/ml of Cyclosporin A may increase the cell cycle progression of human gingival fibroblasts, and its mechanisms may increase the expression of cdk4 and decrease the expression of pRB and p21.
Arthritis, Rheumatoid
;
Autoimmune Diseases
;
Blotting, Western
;
Cell Cycle Proteins
;
Cell Cycle*
;
Cell Proliferation
;
Cell Survival
;
Cyclosporine*
;
Fibroblasts*
;
Fungi
;
G1 Phase
;
Gingival Hyperplasia
;
Humans*
;
Metabolism
;
Mitosis
;
Prescriptions
;
S Phase
;
Transplants
5.3D Histology Using the Synchrotron Radiation Propagation Phase Contrast Cryo-microCT.
Ju Heon KIM ; Sung Mi HAN ; Hyun Ouk SONG ; Youn Kyung SEO ; Young Suk MOON ; Hong Tae KIM
Korean Journal of Physical Anthropology 2018;31(4):133-142
3D histology is a imaging system for the 3D structural information of cells or tissues. The synchrotron radiation propagation phase contrast micro-CT has been used in 3D imaging methods. However, the simple phase contrast micro-CT did not give sufficient micro-structural information when the specimen contains soft elements, as is the case with many biomedical tissue samples. The purpose of this study is to develop a new technique to enhance the phase contrast effect for soft tissue imaging. Experiments were performed at the imaging beam lines of Pohang Accelerator Laboratory (PAL). The biomedical tissue samples under frozen state was mounted on a computer-controlled precision stage and rotated in 0.18° increments through 180°. An X-ray shadow of a specimen was converted into a visual image on the surface of a CdWO4 scintillator that was magnified using a microscopic objective lens (X5 or X20) before being captured with a digital CCD camera. 3-dimensional volume images of the specimen were obtained by applying a filtered back-projection algorithm to the projection images using a software package OCTOPUS. Surface reconstruction and volume segmentation and rendering were performed were performed using Amira software. In this study, We found that synchrotron phase contrast imaging of frozen tissue samples has higher contrast power for soft tissue than that of non-frozen samples. In conclusion, synchrotron radiation propagation phase contrast cryo-microCT imaging offers a promising tool for non-destructive high resolution 3D histology.
Gyeongsangbuk-do
;
Octopodiformes
;
Synchrotrons*
6.The Ethanol Extract of Croton Seed Inhibits the Oral Pathogen, Streptococcus mutans
Ji Hee KIM ; Sam Sung JUNG ; Chung Hoon KANG ; Yong Ouk YOU ; Kang Ju KIM
International Journal of Oral Biology 2018;43(1):37-42
It is noted that Streptococcus mutans (S. mutans) triggers dental caries establishment by two major factors: the synthesis of organic acids, which demineralize dental enamel, and the synthesis of glucans, which mediate the attachment of bacteria to the tooth surface. Therefore, it is noted that the development of a more effective, substantial and safe preventive agent that works against dental caries and periodontal disease is required at this time. For this reason, the present study was designed to investigate the effect of croton seed ethanol extracts on the growth, acid production, adhesion, and insoluble glucan synthesis of S. mutans. In this case, the ethanol extract of croton seed showed concentration dependent inhibitory activity against the growth, acid production and adhesion of S. mutans. Especially, it is important to note that it has produced significant inhibition at the concentration of 0.1 and 0.2 mg/ml as compared to the control group. Moreover, these results suggest that the application of croton seed extract may be considered to be a useful method for the prevention of dental caries.
Bacteria
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Croton
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Dental Caries
;
Dental Enamel
;
Ethanol
;
Glucans
;
Methods
;
Periodontal Diseases
;
Streptococcus mutans
;
Streptococcus
;
Tooth
8.Some Clinical Observation on 306 Cases of Gastric Ulcer.
Seong Wook HUR ; Hak Hyun KIM ; Chang Uoo LEE ; Ki Sung AHN ; Seong Ouk SUH ; Dong Hyun JUNG ; Jung Dong BAE ; Keuk Soo CHUNG
Korean Journal of Gastrointestinal Endoscopy 1983;3(1):22-26
A clinical analysis was carrried out on 306 pts c Gastric ulcer who have visited the Depart on Internal Medicine. Daegue Catholic Hospital during the period from August 1980 to June l982. The result were as follows: of the total 306 cases, 249(81%) cases were male and 57(19%) cases were female, Male to female ratio was 4. 3: 1. Thirsty two percent of the cases blonged to the 6 tb decade, 25.5% to 5 th and 19% to 7 th decade. (continue...)
Daegu
;
Female
;
Humans
;
Internal Medicine
;
Male
;
Stomach Ulcer*
9.A Case of Congenital Mesoblastic Nephroma.
Dong Ouk KWON ; Sung Goo CHANG ; Jin Il KIM ; Soo Eung CHAI
Korean Journal of Urology 1988;29(6):982-986
Congenital mesoblastic nephroma is a slow-growing tumor considered to originate from renal mesenchyme and usually discovered before the age of 6 months. The tumor is almost invariably benign but has been mistaken for Wilms` tumor and unnecessarily overtreated. We report a case of congenital mesoblastic nephroma in 2 months aged infant.
Humans
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Infant
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Mesoderm
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Nephroma, Mesoblastic*
10.Surgical Treatment of the Atlantoaxial Osteoarthritis.
Kwang Ouk JIN ; Young Woo KIM ; Dae Cheol RIM ; Sung Ki AHN
Journal of Korean Neurosurgical Society 2007;41(4):264-266
Atlantoaxial facet joint osteoarthritis is rare, often undiagnosed because it may be misdiagnosed as occipital neuralgia, or degenerative cervical spondylosis. Unilateral occipitocervical pain aggravated by head rotation is a specific symptom. Conservative treatment is usually effective. But when the patient complains of intractable neck pain localized to occipitocervical junction and unresponsive to medical therapy, surgical treatment should be considered. Though a few reports of surgically treated atlantoaxial osteoarthritis has been published, surgical outcome is favorable. A case of a surgically treated atlantoaxial osteoarthritis is presented with a review of the literatures.
Head
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Humans
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Neck Pain
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Neuralgia
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Osteoarthritis*
;
Spondylosis
;
Zygapophyseal Joint