It is well documented that cardiac myxomas are associated with immunologic features that can simulate systemic autoimmune diseases. Recently, it was reported that cardiac myxomas produce IL-6 constitutively, which could partly explain the immunologic features observed in these patients. However, only a few investigators have studied cytokines in regards to symptoms they may cause in patients with cardiac myxoma. Also there is very little information in the literature on the immunohistochmical localization of IL-6. We performed immunobistochemical stains for IL-4, TNF, and IL-6 on paraffm embbeded tissue of cardiac myxoma tissue. A bioassay of IL-6 activity in patient's serum and in cultured cells from fresh myxoma tissue was performed to ascertain the role of these cytokines in myxomas. In this study, we demonstrated inununohistochemically that there was a local overproduction of IL-4, TNF, and IL-6 in cytoplasm of the tumor cells in about half cases. Bioassays of the serum and cultured tumor cells revealed elevated IL-6 activities. Also these findings correlate to production of patient's constitutional symptoms with statistical significance (P<0.05). In conclusion, these results are of considerable importance in understanding the role of IL-4, TNF, and IL-6 in cardiac myxoma patient with constitutional symptoms, and have an impact on strategies for diagnosis and therapy of cardiac myxoma.

The nutcracker phenomenon consists in the compression of the left renal vein between the superior mesenteic artery and the aorta, and this syndrome is an infrequent cause of left-sided hematuria. We present a case of the nutcracker syndrome with intermittent gross hematuria to increase the awareness of this possible cause of hematuria.
Aorta ; Arteries ; Hematuria ; Renal Veins

OBJECTIVES: This survey was attempted to examine the psychological significance, such as depression, anxiety and delinquent, of pubertal changes(expressions of secondary sexual characteristics) between student and delinqent group. METHOD: Data were collected through self-report questionnaire survey over a period 12 months. Subjects served for this study consisted of 248 adolescents including 90 delinquent adolescents and 158 student adolescents in Korea, sampled from Korean middle school population and delinquent adolescent population confined in juvenile corrective institutions. The SDS & SAS were used to evaluate the state of depression & anxiety in adolescents, respectively. RESULT: 1) The early-bloomer outnumbered late-bloomer in male delinquent adolescent. 2) There were the significant differences in first experiences of masturbation, expression of pubic hair, expression of axillary hair, expression of facial hair among secondary sexual characteristics between both groups. 3) In student adolescent, there was no significant difference in anxiety, depression level between early-bloomer and late-bloomer. 4) In male delinquent adolescent, late-bloomer was significantly more anxious, depressive than early-bloomer. CONCLUSION: These findings suggest the rapid pubertal changes during adolescence have effect on delinquency, depression, anxiety, especially male. Furthermore we may assume that this preliminary results will provide useful information in understanding the psychological aspect of adolescents.
Adolescent* ; Anxiety* ; Depression* ; Hair ; Humans ; Korea ; Male ; Masturbation ; Surveys and Questionnaires ; Sex Characteristics*

MELAS syndrome is a rare but distinct clinical entity belonging to a group of mitochondrial encephalomyopathies characterized by the tetrad of mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes. We experienced a case of MELAS syndrome in an 8 year-old boy who showed headache, pain of the eyeball, vomiting, stroke-like episodes such as visual disturbance and dysarthria, myoclonic seizure, confusion, and walking disturbance. His serum lactate level was elevated up to 48 mg/dl. MRI findings showed high signal intensities T2-weighted image and low signal intensities in T1-weighted image in the right thalamus and parietooccipital lobe and bilateral symmetric high signal intensity in T1-dweighted image in the basal ganglia. We have seen the dispersed ragged-red fibers with modified Gomori trichrome staining on light microscope, and abundant and dysmorphic mitochondria on electon microscope in the specimen of muscle biopsy. esis of SLE.
Basal Ganglia ; Biopsy ; Child ; Dysarthria ; Headache ; Humans ; Lactic Acid ; Magnetic Resonance Imaging ; Male ; MELAS Syndrome* ; Mitochondria ; Mitochondrial Encephalomyopathies ; Seizures ; Thalamus ; Vomiting ; Walking

BACKGROUND: Extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli and Klebsiella pneumoniae are main pathogens of bloodstream infection. We compared the epidemiology of ESBL-producing E. coli and K. pneumoniae. METHODS: From January 2003 through March 2007, we retrospectively investigated the clinical characteristics and comorbidities of patients with bloodstream infection by ESBL-producing E. coli and K. pneumoniae. RESULTS: During the study period, 79 patients (54 with E. coli and 25 with K. pneumoniae) with blood cultures positive for ESBL-producing E. coli or K. pneumoniae were studied. When comparing the source of bloodstream infections, urinary tract infections (UTIs) were more commonly caused by E. coli (24% vs. 0; P=0.007), and respiratory tract and soft tissue infection (36% vs. 15%; P=0.04, 12% vs. 0; P=0.03, respectively) were more commonly associated with K. pneumoniae. Among hospital-acquired bloodstream infection, third-generation cephalosporin was more commonly used in patients with E. coli than patients with K. pneumoniae (81% vs. 24%, P<0.001). Medical devices (central venous catheter and urinary catheter) were more commonly used in patients with K. pneumoniae. CONCLUSION: ESBL-producing E. coli bloodstream infection is more common in urinary tract infections. ESBL-producing K. pneumoniae is more common in respiratory tract infections and in skin and soft tissue infections. In hospital-acquired infections, ESBL-producing E. coli bloodstream infection is more common in biliary tract infection. ESBL-producing E. coli was more commonly associated with prior frequent antibiotics use and K. pneumoniae was more commonly associated with use of medical devices.
Anti-Bacterial Agents ; beta-Lactamases ; Biliary Tract ; Catheters ; Comorbidity ; Epidemiology* ; Escherichia coli* ; Humans ; Klebsiella pneumoniae* ; Pneumonia ; Respiratory System ; Respiratory Tract Infections ; Retrospective Studies ; Skin ; Soft Tissue Infections ; Urinary Tract Infections

Objective: To establish and to promote the qualitative development of a housing service model in South Korea. Methods: The questionnaire was collected through the housing needs survey and the focus group interview on the mental health professions. We enrolled 365 subjects from 63 places (community conversion facilities, cohabitation, cohabitation families, hospitals, psychiatric nursing homes) to answer the questionnaires. Results: The survey result confirms the needs of people with a mental illness to be self-reliant, but it shows that the economic vulnerability is a hindrance. In addition, the most necessary factor for self-reliant living is to provide services that support daily living. Therefore, the study points out that a system that guarantees self-reliance must be added in order for the housing services to be distributed throughout local communities for the people with mental illness. Conclusion The study proposes the Seoul-type housing services model to replace the housing services that functions in a fragmented manner with the provision of an integrated services through a unified channel by establishing a housing support center (tentative name). This will ultimately help people with a mental illness to live a healthy life that meets their needs as community members.

BACKGROUND: The purpose of this study is to investigate the positive rates of screening tests for inherited metabolic disorders, set cutoff values, and report the actual status of internal quality controls in LabGenomics Clinical Laboratories by using LC-MS/MS system. METHODS: We use Agilent 1260 Infinity HPLC System (Agilent Technologies, USA) for liquid chromatography, and API 2000 (AB Sciex, Canada) for MS/MS system. We set up screening tests for 55 diseases, which include metabolic disorders of 25 amino acids, 16 organic acids, and 14 fatty acids. RESULTS: We determined the analyte cutoff values as 99.9 or 0.1 percentiles in 15,000 newborn samples. The total number of samples tested from January 2012 to September 2014 was 119,948; of these, 6,681 were repeated. Of the repeated samples, 713 were presumed to be positive in the screening tests. Repeat screening with newly obtained dried blood spot specimens was recommended for these 713 samples and 600 specimens were obtained. Thus, the recall rate was 0.5% (600/119,948) for all samples and 84.2% (600/713) for the samples presumed to be positive in the screening tests. About 70 samples, that is, 0.06% of the total samples and 11.7% of the "reobtained" samples, again tested positive; we recommended confirmatory tests for these samples. CONCLUSIONS: We have presented data on the status of neonatal screening tests for inherited metabolic disorders using LC-MS/MS, including positive rates and recall rates of screening tests, set up cutoff values and reported the actual status of internal quality controls in a clinical laboratory in Korea.
Amino Acids ; Chromatography, High Pressure Liquid ; Chromatography, Liquid ; Fatty Acids ; Humans ; Infant, Newborn ; Korea* ; Mass Screening ; Neonatal Screening* ; Quality Control ; Tandem Mass Spectrometry*

No abstract available.
Female ; Hysterectomy, Vaginal* ; Uterine Prolapse*

BACKGROUND: Serological prenatal screening tests are widely used to detect fetal chromosomal abnormalities such as Down and Edward syndromes. After determining the presence of fetal cell-free DNA in maternal blood, the non-invasive prenatal test (NIPT) coupled with next-generation sequencing has been performed in other countries, therefore, we developed a domestic NIPT technology. METHODS: The results of genomics-based NIPT performed between April and May, 2015 were analyzed. Maternal blood samples were collected in a specific Cell-Free DNA BCT tube. The samples were then massively sequenced using MiSeq and NextSeq 500 (Illumina Inc., USA) using LabGenomics laboratory-developed libraries. Chromosomal abnormalities were analyzed using a bioinfomatics algorithm. RESULTS: A total of 464 cases were analyzed. The samples of 12 subjects had to be collected again because of a low fetal DNA fraction in the initially obtained samples. Among the 456 cases for which fetal genome results were obtained, 436 had a low risk of trisomy, 12 had a high risk for Down syndrome, two had a high risk for Edward syndrome, and four had sex chromosomal aneuploidy, showing that the positive percentage of chromosomal abnormalities was 4.4%. All 12 cases with high risk for Down syndrome were confirmed as having trisomy 21 by amniocentesis. CONCLUSIONS: Our laboratory-developed genomics-based NIPT showed high positive predictive value, therefore, NIPT may be replaced by our own developed method.
Amniocentesis ; Aneuploidy ; Chromosome Aberrations ; DNA ; Down Syndrome ; Genome ; Prenatal Diagnosis ; Trisomy

PURPOSE: The aim of this study was to confirm the applicability of YouTube as a delivery platform of lecture videos for dental students and to assess their learning attitudes towards the flipped classroom model. METHODS: Learning experiences after using the YouTube platform to deliver preliminary video lectures in a flipped classroom were assessed by 69 second-year students (52 males, 17 females) at Dankook University College of Dentistry, Korea, who attended periodontology lectures during 2 consecutive semesters of the 2016 academic year. The instructor uploaded the lecture videos to YouTube before each class. At the end of the second semester, the students were surveyed using a questionnaire devised by the authors. RESULTS: Of the students, 53 (76.8%) always watched the lecture before the class, 48 (69.6%) used their smartphones, and 66 (95.7%) stated that they watched the lectures at home. The majority of the students replied that the video lectures were easier to understand than face to face lectures (82.6%) and that they would like to view the videos again after graduation (73.9%). CONCLUSION: Our results indicate that YouTube is an applicable platform to deliver video lectures and to expose students to increased learning opportunities.
Dentistry ; Education, Dental ; Educational Technology ; Humans ; Korea ; Learning ; Lectures ; Male ; Republic of Korea ; Smartphone ; Students, Dental