1.Partial Purification and Characterization of 41 kDa Serine Proteinase from Culture Filtrate of Trichophyton tonsurans.
Jae Il YOO ; Yeong Seon LEE ; Yeon Hwa CHOI ; Hyung Yeul JOO ; Bong Su KIM ; Soon Bong SUH
Journal of the Korean Society for Microbiology 1999;34(3):303-310
Dermatophytes infect the human hair, skin, nail and cause the dermatophytosis. The extracellular and intracellular proteinases of the dermatophytes commonly occur in the genus Trichophyton like T. rubrum, T. mentagrophytes, and T. granulosum. These enzymes play a prominent role in growth, multiplication and infection of the host tissue. Extracellular proteinases have been purified from the species of Trichophyton and Microsporum. We purified the proteinase partially from the culture filtrate of the Trichophyton tonsurans through Mono-Q and Superose 12 column and investigated its biochemical and enzymatic characters. The molecular size of the proteinase was estimated to be 41 kDa by SDS-PAGE. And pI was 3.2. The optimal temperature and pH for an enzymatic activity were 27C and 7.5, respectively. The purified porteinase degraded the keratin, bovine serum albumin, hemoglobin. The serine proteinase inhibitor like PMSF and DFP inhibited the proteolytic activity of the purified enzyme whereas the cysteinase inhibitor did not. These results demonstrated that the purified proteinase is a serine proteinase and can contribute the tissue invasion.
Arthrodermataceae
;
Electrophoresis, Polyacrylamide Gel
;
Hair
;
Humans
;
Hydrogen-Ion Concentration
;
Isoflurophate
;
Microsporum
;
Peptide Hydrolases
;
Serine Proteases*
;
Serine*
;
Serum Albumin, Bovine
;
Skin
;
Tinea
;
Trichophyton*
2.Analysis of Menu Patterns of Noodle Meals in the School Foodservices in Busan and Gyeongnam Province.
Seok Young KIM ; Seon Hwa CHOI ; Ye Sung SHIN
Korean Journal of Community Nutrition 2007;12(1):106-113
The purpose of this study was to classify noodle meals into a few groups according to their menu patterns and cooking methods from the 318 noodles and Ttokgook menus of 360 elementary school foodservices around Busan and Gyeongnam province. Noodle meals with high frequency were also analyzed by season and region to give information for menu planning and to improve elementary school foodservices. The menus were collected from the internet (http://www.kdclub.com) and the home pages of elementary schools between December 2004 and September 2005. Taking all kinds of noodle meals together, the serving frequencies were significantly different among regions, but were not different from season to season. Three different menu patterns were revealed from the collected noodle menus. The most frequently served menu pattern was "main dish + starchy food & dessert + fruit & beverage + kimchi" Gooksu, Ttokgook, Udong, and Kalgooksu meals were served with this menu pattern. The menu pattern of Jajangmeon meal was "main dish + side-dish + starchy food & dessert + fruit & beverage + (kimchi)" . For the Bibimmeon and the spaghetti meals "main dish + soup + starchy food & dessert + fruit & beverage + kimchi" was used. Ttigim, Danmugy, Saengchae, and chicken were frequently selected as side dishes in the overall noodle menus. More side dishes of a wide variety were served in Ttokgook meal, whereas Danmugy was the most preferred food item as a side dish with Jajangmeon and Udong meals. Corndog, Mandu, Ttok, Matang, and doughnut were preferred food items as a "starchy food & dessert" with most kinds of noodle meals, except spaghetti with which only garlic-bread was served. The fruit and beverage items were not different with the majority of noodle meals. These results suggest that cost, food habits, compatible flavor combinations, and food preference of children rather than nutritional considerations contributed to the selection of food items for the components of noodle meals in the school foodservices.
Beverages
;
Busan*
;
Chickens
;
Child
;
Cooking
;
Food Habits
;
Food Preferences
;
Fruit
;
Humans
;
Internet
;
Meals*
;
Menu Planning
;
Seasons
3.A Study on the Balance of Iron and Zinc in Korean Children.
In Seon CHOI ; Kyung Hwa LEE ; Seung Ho OH
Korean Journal of Community Nutrition 1998;3(1):12-20
In this study, the food intake, feces and urine of 14 primary school age boys and girls were collected and intake and excretion of iron and zinc were measured. The boys and girls were 8-12 years old and measurement continued for four weeks during which they maintained their normal living pattern. Each boy's and girl's daily intake and excretion of iron and zinc were measured and apparent digestibility and balance were also calculated. The results are as follows. Mean daily intake of iron was 14.9+/-0.6 mg for the boys and 12.4+/-0.5 mg for the girls. Mean daily intake of zinc was 11.8+/-1.2 mg for the boys and 11.5+/-0.4 mg for the girls. Mean daily fecal loss and apparent digestibility of iron was 6.1+/-0.3 mg and 58.8+/-2.0% for the boys and 6.8+/-0.1 mg and 44.1+/-2.0% for the girls. Mean daily fecal loss and apparent digestibility of zinc was 9.3+/-0.2 mg and 14.4+/-5.1% for the boys and 9.7+/-0.4 mg and 14.3+/-4.3% for the girls. Mean daily urinary loss of iron was 1.1+/-0.1 mg and showed the positive balance of 7.86+/-0.6 mg for the boys and 0.5+/-0.1 mg and showed the positive balance of 5.14+/-0.4 mg for the girls. Mean daily urinary loss of zinc was 0.5+/-0.1 mg and showed the positive balance of 1.03+/-0.6 mg for the girls.
Child*
;
Eating
;
Feces
;
Female
;
Humans
;
Iron*
;
Zinc*
4.Eupatilin treatment inhibits transforming growth factor beta-induced endometrial fibrosis in vitro
Chang-Jin LEE ; Seon-Hwa HONG ; Min-Ji YOON ; Kyung-Ah LEE ; Dong Hee CHOI ; Hwang KWON ; Jung-Jae KO ; Hwa Seon KOO ; Youn-Jung KANG
Clinical and Experimental Reproductive Medicine 2020;47(2):108-113
Objective:
Endometrial fibrosis, the primary pathological feature of intrauterine adhesion, may lead to disruption of endometrial tissue structure, menstrual abnormalities, infertility, and recurrent pregnancy loss. At present, no ideal therapeutic strategy exists for this fibrotic disease. Eupatilin, a major pharmacologically active flavone from Artemisia, has been previously reported to act as a potent inducer of dedifferentiation of fibrotic tissue in the liver and lung. However, the effects of eupatilin on endometrial fibrosis have not yet been investigated. In this study, we present the first report on the impact of eupatilin treatment on transforming growth factor beta (TGF-β)-induced endometrial fibrosis.
Methods:
The efficacy of eupatilin on TGF-β–induced endometrial fibrosis was assessed by examining changes in morphology and the expression levels of fibrosis markers using immunofluorescence staining and quantitative real-time reverse-transcription polymerase chain reaction.
Results:
Eupatilin treatment significantly reduced the fibrotic activity of TGF-β–induced endometrial fibrosis in Ishikawa cells, which displayed more circular shapes and formed more colonies. Additionally, the effects of eupatilin on fibrotic markers including alpha-smooth muscle actin, hypoxia-inducible factor 1 alpha, collagen type I alpha 1 chain, and matrix metalloproteinase-2, were evaluated in TGF-β–induced endometrial fibrosis. The expression of these markers was highly upregulated by TGF-β pretreatment and recovered to the levels of control cells in response to eupatilin treatment.
Conclusion
Our findings suggest that suppression of TGF-β–induced signaling by eupatilin might be an effective therapeutic strategy for the treatment of endometrial fibrosis.
5.Endometrial profilin 1: a key player in embryo-endometrial crosstalk
Chang-Jin LEE ; Seon-Hwa HONG ; Min-Ji YOON ; Kyung-Ah LEE ; Jung-Jae KO ; Hwa Seon KOO ; Jee Hyun KIM ; Dong Hee CHOI ; Hwang KWON ; Youn-Jung KANG
Clinical and Experimental Reproductive Medicine 2020;47(2):114-121
Objective:
Despite extensive research on implantation failure, little is known about the molecular mechanisms underlying the crosstalk between the embryo and the maternal endometrium, which is critical for successful pregnancy. Profilin 1 (PFN1), which is expressed both in the embryo and in the endometrial epithelium, acts as a potent regulator of actin polymerization and the cytoskeletal network. In this study, we identified the specific role of endometrial PFN1 during embryo implantation.
Methods:
Morphological alterations depending on the status of PFN1 expression were assessed in PFN1-depleted or control cells grown on Matrigel-coated cover glass. Day-5 mouse embryos were cocultured with Ishikawa cells. Comparisons of the rates of F-actin formation and embryo attachment were performed by measuring the stability of the attached embryo onto PFN1-depleted or control cells.
Results:
Depletion of PFN1 in endometrial epithelial cells induced a significant reduction in cell-cell adhesion displaying less formation of colonies and a more circular cell shape. Mouse embryos co-cultured with PFN1-depleted cells failed to form actin cytoskeletal networks, whereas more F-actin formation in the direction of surrounding PFN1-intact endometrial epithelial cells was detected. Furthermore, significantly lower embryo attachment stability was observed in PFN1-depleted cells than in control cells. This may have been due to reduced endometrial receptivity caused by impaired actin cytoskeletal networks associated with PFN1 deficiency.
Conclusion
These observations definitively demonstrate an important role of PFN1 in mediating cell-cell adhesion during the initial stage of embryo implantation and suggest a potential therapeutic target or novel biomarker for patients suffering from implantation failure.
6.A Case of Cytomegalovirus Retinitis during Maintenance Chemotherapy for Acute Leukemia
Bin AHN ; Seungha SONG ; Mi Seon HAN ; Baek Lok OH ; Jae Hong CHOI ; Eun Hwa CHOI
Pediatric Infection & Vaccine 2020;27(3):198-204
Cytomegalovirus (CMV) disease is rare in children who receive anticancer chemotherapy and have no history of stem cell transplantation (SCT). We report a case of CMV retinitis that developed during maintenance chemotherapy for acute leukemia. A 7-year-old boy developed decreased visual acuity and persistent pancytopenia during maintenance chemotherapy.Laboratory investigations initially showed significant CMV antigenemia (51 positive cells/200,000 leukocytes); however, antiviral therapy was not deemed necessary in this patient who had no history of SCT. CMV antigenemia worsened to 170 positive cells/200,000 leukocytes over 3 weeks. Ophthalmological examination revealed multiple bilateral retinal infiltrates and granular lesions. He was diagnosed with CMV retinitis and was treated with a 4-week course of intravenous ganciclovir and intravitreal injection of ganciclovir 6 times, followed by a 1-month course of orally administered valganciclovir. A CMV antigenemia assay showed negative results, and follow-up fundoscopy revealed lesser retinal infiltration after the sixth intravitreal ganciclovir injection. Future studies should focus on the development of standardized screening methods and preemptive therapeutic strategies for CMV disease in high-risk children.
7.A Case of Cytomegalovirus Retinitis during Maintenance Chemotherapy for Acute Leukemia
Bin AHN ; Seungha SONG ; Mi Seon HAN ; Baek Lok OH ; Jae Hong CHOI ; Eun Hwa CHOI
Pediatric Infection & Vaccine 2020;27(3):198-204
Cytomegalovirus (CMV) disease is rare in children who receive anticancer chemotherapy and have no history of stem cell transplantation (SCT). We report a case of CMV retinitis that developed during maintenance chemotherapy for acute leukemia. A 7-year-old boy developed decreased visual acuity and persistent pancytopenia during maintenance chemotherapy.Laboratory investigations initially showed significant CMV antigenemia (51 positive cells/200,000 leukocytes); however, antiviral therapy was not deemed necessary in this patient who had no history of SCT. CMV antigenemia worsened to 170 positive cells/200,000 leukocytes over 3 weeks. Ophthalmological examination revealed multiple bilateral retinal infiltrates and granular lesions. He was diagnosed with CMV retinitis and was treated with a 4-week course of intravenous ganciclovir and intravitreal injection of ganciclovir 6 times, followed by a 1-month course of orally administered valganciclovir. A CMV antigenemia assay showed negative results, and follow-up fundoscopy revealed lesser retinal infiltration after the sixth intravitreal ganciclovir injection. Future studies should focus on the development of standardized screening methods and preemptive therapeutic strategies for CMV disease in high-risk children.
8.Psychometric Properties of the Korean Version of the Clinical Language Disorder Rating Scale (CLANG).
Seon Cheol PARK ; Eun Young JANG ; Kang Uk LEE ; Jung Goo LEE ; Hwa Young LEE ; Joonho CHOI
Clinical Psychopharmacology and Neuroscience 2016;14(1):49-56
OBJECTIVE: Our study aimed to measure inter-rater and test-retest reliability, concurrent and convergent validity, and factor solutions of the Korean version of the Clinical Language Disorder Rating Scale (CLANG). METHODS: The Korean version of the CLANG for assessing thought, language, and communication, the Brief Psychiatric Rating Scale, Young Mania Rating Scale, and Calgary Depression Scale for Schizophrenia were used to evaluate language disorder, formal thought disorder, positive and negative symptoms, manic symptoms, and depressive symptoms, respectively, in 167 hospitalized patients with schizophrenia. The factor solution was obtained by the direct oblimin method. A receiver operating characteristic curve was used to find the optimal cut-off score for discriminating schizophrenia patients with and without disorganized speech. RESULTS: Inter-rater reliability was considered moderate (intraclass coefficient=0.67, F=3.30, p=0.04), and test-retest reliability was considered high (r=0.94, p<0.001). Five factors, namely, pragmatics, disclosure, production, prosody, and association, were identified. An optimal cut-off score of 7 points with 84.5% sensitivity and 81.7% specificity was proposed for distinguishing schizophrenia patients with and without disorganized speech. CONCLUSION: Our findings suggest that the Korean version of the CLANG is a promising tool for evaluating language disorder in patients with schizophrenia.
Bipolar Disorder
;
Brief Psychiatric Rating Scale
;
Depression
;
Disclosure
;
Humans
;
Language Disorders*
;
Psychometrics*
;
ROC Curve
;
Schizophrenia
;
Sensitivity and Specificity
9.A Case of Congenital Lymphatic Dysplasia Complicated by Hydrops Fetalis.
Young Mi YOON ; Seon Nyo KIM ; Hye Rim KIM ; Young Hwa JUNG ; Chang Won CHOI ; Beyong Il KIM
Neonatal Medicine 2017;24(1):40-44
Congenital lymphatic dysplasia is a rare congenital maldevelopment of the lymphatic system, in which dysfunction of the lymphatic system may cause leakage of lymph fluid into the limbs and the pleural, pericardial, or peritoneal cavity. We experienced a case of hydrops fetalis with subcutaneous lymphedema, chylothorax, chylous ascites and pericardial effusion. Lymphangiography revealed a critical defect of lymphatic system. Here, we report the first case of premature infant with congenital lymphatic dysplasia confirmed by lymphangiography, which is the first reported in Korea.
Chylothorax
;
Chylous Ascites
;
Edema*
;
Extremities
;
Humans
;
Hydrops Fetalis*
;
Infant, Newborn
;
Infant, Premature
;
Korea
;
Lymphatic System
;
Lymphedema
;
Lymphography
;
Pericardial Effusion
;
Peritoneal Cavity
10.Perfusion MR Imaging of Seizure-related Cerebral Cortical Lesion: A Case Report.
Hyemin SEO ; Dae Seob CHOI ; Hwa Seon SHIN ; Seungnam SON
Journal of the Korean Society of Magnetic Resonance in Medicine 2013;17(4):312-315
When cerebral cortical hyperintensities on diffusion-weighted image are seen in patients with suspected acute stroke accompanying seizure, it is necessary to differentiate whether they are caused by infarction or seizure-related change. We report a case of seizure-related cortical hypertensities in a patient with suspected acute infarction. With perfusion MR imaging, we could differentiate from acute infarction.
Humans
;
Infarction
;
Magnetic Resonance Imaging*
;
Perfusion*
;
Seizures
;
Stroke