1.Optimum Culture Conditions for Production of Proteinases secreted by Candida albicans , C. tropicalis , and C. parapsilosis.
Choon Myung KOH ; Kyoung Ho LEE ; Woon Seob SHIN ; Joo Young PARK ; Hyun Sook PARK
Journal of the Korean Society for Microbiology 1997;32(4):421-428
In the present study, culture conditions to secrete proteinases from C. albicans, C. tropicalis and C. parapsilosis were examined. All three Candida species were found to secrete proteinases from acceleration phase to stationary phase, although the proteinase activities in culture filtrate were maximal during late exponential or early stationary phase. The proteinase activity in the culture filtrate of C. albicans cells grown at 30'C, was much higher than those grown at either 20 or 37'C. In culture of C. tropicalis and C. parapsilosis, the highest activity was found in culture filtrate grown at 37C. C. albicans secreted proteinases well in medium at initial pH 4.0-7.0. The optimal initial pH of medium for proteinase secretion was 7.0 for C. tropicalis and 5.0-6.0 for C. parapsilosis. All three Candida species secreted proteinases to greater amount in aerobic state. The most effective carbon source for proteinase secretion was xylose, glucose, maltose and sucrose for C. albicans, xylose for C. tropicalis and trehalose for C. parapsilosis. The effects of proteins, hydrolyzed proteins, ammonium sulfate as a sole nitrogen source on proteinase secretion were examined. Bovine serum albumin was the most effective nitrogen source of those tested and a little proteinase activity was detected in the culture filtrates when yeast cells were incubated in the medium containing ammonium sulfate. C. parapsilosis secreted proteinases to greater amount than the other Candida species in all nitrogen sources under study, indicating that C. parapsilosis proteinase would not be a inducible but a constitutive enzyme.
Acceleration
;
Ammonium Sulfate
;
Candida albicans*
;
Candida*
;
Carbon
;
Glucose
;
Hydrogen-Ion Concentration
;
Maltose
;
Nitrogen
;
Peptide Hydrolases*
;
Serum Albumin, Bovine
;
Sucrose
;
Trehalose
;
Xylose
;
Yeasts
2.Radiological Analysis of Aging Changes of the Lumbar Intervertebral Disc.
In Seob LIM ; Chang Seok OH ; Jun Ho SHIN ; Baik Yoon KIM ; Jae Rhyong YOON
Korean Journal of Physical Anthropology 1995;8(1):53-60
The present study was carried out to clarify the anatomical changes of lumbar intervertebral discs by aging. Anterior height, posterior height, anteroposterior diameter of intervertebral discs were measured on 512 normal plain lateral radiographs of lumbosacral spine. And the indices of disc wedging and relative disc height were calculated. There was a cephalocaudal gradient of increase in the indices of disc wedging in all age groups. The indices of relative disc height were constant at all lumbar levels. These suggest that the lower disc is more wedge shaped and the height of discs changes in the constant ratio with that of vertebral body.
Aging*
;
Humans
;
Intervertebral Disc*
;
Spine
3.Mammography, US and MR Findings of Cystic Lymphangioma of the Breast: a Case Report.
Journal of the Korean Radiological Society 1996;35(2):279-281
Lymphangiomas are congenital malformations that occur most commonly in the head, neck or axilla and 80-90% of lesions are detected by the age of two years. Cystic lymphangioma of the breast in a 37-year-old woman ; it showed typical well-defined tubular and nodular opacity on mammogram, a multilocular septated anechoic mass on ultrasonogram, and low and high signal intensity on T1- and T2-weighted MR images, respectively. These findings before surgery indicated cystic lymphangioma.
Adult
;
Axilla
;
Breast*
;
Female
;
Head
;
Humans
;
Lymphangioma
;
Lymphangioma, Cystic*
;
Mammography*
;
Neck
4.Serum Indeces Protein Fibrils Expression in Candida albicans.
Choon Myung KOH ; Kyoung Ho LEE ; Woon Seob SHIN ; Dong Hwa KIM
Journal of the Korean Society for Microbiology 1999;34(3):277-283
The fibrillar coat of Candida albicans is of interest as its significance in antigenicity, antiphagocytosis, and adherence to host tissues. The partial biochemical properties and ultrastructure of fibrillar coat induced by rabbit sera were examined. The induced fibrillar layer was destroyed by treatments of lyticase, proteinase K and dithiothreitol. The total protein concentration of fibrillar cell wall lysate was higher than that of non-fibrillar cell wall lysate, but the total sugar concentration was similar. On SDS-PAGE analysis, the protein profiles between in fibrillar cells and in non-fibrillar cells were shown to be different. In fibrillar cells, the major bands of cell wall lysate were 83, 66, 54, 47, 33, and 26 kDa in dithiothreitol-treated lysate. The proteins of 26 and 19 kDa were predominant in lyticase-treated lysate. Although the fibrillar thickness and protein amount of cell wall lysate were increased in according to the incubation time, the protein profiles did not changed. These results suggest that the proteins of 83, 66, 54, 47, 33, 26, and 19 kDa may be major constituents of fibrillar coat in C. albicans.
Candida albicans*
;
Candida*
;
Cell Wall
;
Dithiothreitol
;
Electrophoresis, Polyacrylamide Gel
;
Endopeptidase K
5.A Case of Metastatic Uterine Cervical Carcinma of the Orbit.
Young Ho JEON ; Jung Chul SHIN ; Dong Seob KIM
Journal of the Korean Ophthalmological Society 1998;39(11):2822-2826
In adults, it is known that tetastatic tumor to the eye and its adnexa is rare compared with other sites. Orbital tumors can be classified as primary, secondary, and metastatic. Secondary orbital tumors are those that extend to the orbit from a contiguous structure. Metastatic tumors are those that spread to the orbit from more distant site in the body. and their prognosis for life is poor because of widespread systemic malignancy. We experienced a case of metastatic uterine cervical carcinoma of the orbit in a 33-year-old female patient who came to us with a history of sudden proptosis and decreased vision. Eighteen months earlier, the patient had been diagnosed with squamous cell carcinoma of the uterine cervix, and she had undergone chemotherapy, irradiation and surgical intervention. Lung and parametrium metastases were also found six months previously. We report a case of metastatic uterine cervical cancer of the orbit with a review of the literature.
Adult
;
Carcinoma, Squamous Cell
;
Cervix Uteri
;
Drug Therapy
;
Exophthalmos
;
Female
;
Humans
;
Lung
;
Neoplasm Metastasis
;
Orbit*
;
Prognosis
;
Uterine Cervical Neoplasms
6.Detection of Antibody to Candida albicans Proteinase in Sera from C. albicans - Cultured Patients and Healthy Controls.
Kyoung Ho LEE ; Woon Seob SHIN ; Hyun Sook PARK ; Young UH ; In Ho JANG ; Kap Jun YOON ; Choon Myung KOH
Journal of the Korean Society for Microbiology 1997;32(3):307-314
To investigate whether anti-Candida proteinase antibody could be a diagnostic marker, we examined seroreactivity to proteinase in sera from 90 healthy controls and 8 of C. albicans culture-positive patients. Previously we purified proteinases of C. albicans, C. tropicalis, and C. parapsilosis using a series of chromatographic steps consisting of DEAE- Sepharose, Sephacryl S-200, and size-exclusion HPLC. ELISA and Western blot technique were adopted to examine seroreactivity of C. albicans proteinase with sera. On ELISA, the seroreactivities of healthy controls and C. albicans-cultured patients were 0.601 +- 0.014 (mean+SEM), and 0.695 +- 0.079, respectively (P=0.084, t-test). In C. albicans-cultured patients, the positive rate was 62.5% (5/8) and the positive rate of healthy controls was 39% (35/90). On Western blot analysis, C. albicans proteinase molecule was blotted by all sera tested. But the intensity of blotted band was different with the same dilution of sera; the intensity of C. albicans proteinase molecule band blotted by 2 sera of 3 healthy control's sera was distinctively lower than that by C. albicans-cultured patients sera. However, all sera including C. albicans-cultured patient's sera did not blot the proteinase secreted by C. tropicalis and C. parapsilosis. It is necessary to collect sequential sera of patients with candidiasis and to establish a cut-off value for ELISA or serum dilution for Western blot analysis that will give reliable test sensitivity and specificity.
Blotting, Western
;
Candida albicans*
;
Candida*
;
Candidiasis
;
Chromatography, High Pressure Liquid
;
Enzyme-Linked Immunosorbent Assay
;
Humans
;
Peptide Hydrolases
;
Sensitivity and Specificity
;
Sepharose
7.Bosworth Fracture Treated by the Anti: Glide Plate Technique: A Case Report.
Do Yeung KIM ; Hwa Jae JEONG ; Joo Ho SHIN ; Gun Il IM ; Kang Seob YOUN ; Won Ho CHO
The Journal of the Korean Orthopaedic Association 1998;33(1):216-220
Bosworth fracture, fracture-dislocation of ankle with entrapment of fibula behind the tibia, is a rare condition. Diagnosis of this fracture-dislocation may not he easy, and closed reduction of this injury is difficult because of entrapment of fibula by the tieht interosseous membrane. We report a case of Bosworth fracture treated with the anti-glide plate technique.
Ankle
;
Diagnosis
;
Fibula
;
Membranes
;
Tibia
8.A comparative study on shear bond strengths influenced by time elapsed after bracket bonding with a light-cured glass ionomer cement.
Ki Soo LEE ; Ho Nam LIM ; Young Guk PARK ; Kang Seob SHIN
Korean Journal of Orthodontics 1995;25(5):605-611
The purpose of this study was to evaluate effects of time on shear bond strengths of a light-cured glass ionomer cement and chemically cured resin cement to enamel, and to observe the failure patterns of bracket bondings. Shear bond strength of a light-cured glass ionomer cement were compared with that of a resin cement Metal brackets were bonded on the extracted human bicuspids. Specimens were subjected to a shear load(in an Instron machine) after storage at room temperature for 5 and 15 minutes, after storage in distilled water at 37degrees C for 1 and 35 days. The deboned specimens were measured m respect of adhesive remnant index. The data were evaluated and tested by ANOVA, Duncan's multiple range test, and t-test, and those results were as follows. 1. The shear bond strength of light-cured glass ionomer cement is higher than that of resin cement at 5 and 15 minutes. 2. The shear bond strengths of both light-cured glass ionomer cement and resin cement increase with time. There was no significant difference in those of both 1 day group and 35 day group. 3. LIght-cured glass ionomer cement is suitable as orthodontic bracket adhesives.
Adhesives
;
Bicuspid
;
Dental Enamel
;
Glass Ionomer Cements*
;
Glass*
;
Humans
;
Orthodontic Brackets
;
Resin Cements
;
Water
9.Correlation Between Testosterone Replacement Treatment and Lower Urinary Tract Symptoms
Min Ho LEE ; Yu Seob SHIN ; Sung Chul KAM
International Neurourology Journal 2021;25(1):12-22
Lower urinary tract symptoms (LUTS) are a cluster of voiding symptoms, such as weak stream, hesitancy, intermittency, urinary frequency, urgency, and nocturia. LUTS are frequent in elderly men and it considered the ultimate clinical symptoms of benign prostatic hyperplasia. With aging, male hypogonadism is increased which is defined as decreased ability of the testes to produce sperm and sex steroids because of a pituitary/hypothalamic, or testicular deficiency. In academic andrology associations, the term “male hypogonadism” is commonly used to categorize testosterone deficiency. Testosterone deficiency syndrome (TDS) is defined as a decrease in serum testosterone accompanied by symptoms such as libido decrease, depressive disorder, erectile dysfunction, and fatigue. Although the mechanism about testosterone-replacement therapy (TRT) effects on men with hypogonadism is not yet identified, TRT has been shown to effectively relieve the symptoms of TDS as well as LUTS by several studies. Although the present review demonstrates the effectiveness and safety of TRT in men with TDS by prior studies, future large scale of clinical trials should be conducted to present more high-quality evidence to clinicians and patients.
10.Correlation Between Testosterone Replacement Treatment and Lower Urinary Tract Symptoms
Min Ho LEE ; Yu Seob SHIN ; Sung Chul KAM
International Neurourology Journal 2021;25(1):12-22
Lower urinary tract symptoms (LUTS) are a cluster of voiding symptoms, such as weak stream, hesitancy, intermittency, urinary frequency, urgency, and nocturia. LUTS are frequent in elderly men and it considered the ultimate clinical symptoms of benign prostatic hyperplasia. With aging, male hypogonadism is increased which is defined as decreased ability of the testes to produce sperm and sex steroids because of a pituitary/hypothalamic, or testicular deficiency. In academic andrology associations, the term “male hypogonadism” is commonly used to categorize testosterone deficiency. Testosterone deficiency syndrome (TDS) is defined as a decrease in serum testosterone accompanied by symptoms such as libido decrease, depressive disorder, erectile dysfunction, and fatigue. Although the mechanism about testosterone-replacement therapy (TRT) effects on men with hypogonadism is not yet identified, TRT has been shown to effectively relieve the symptoms of TDS as well as LUTS by several studies. Although the present review demonstrates the effectiveness and safety of TRT in men with TDS by prior studies, future large scale of clinical trials should be conducted to present more high-quality evidence to clinicians and patients.