Glucose prevents the development of diabetes induced by alloxan. In the present study, the protective mechanism of glucose against alloxan-induced beta-cell damage was investigated using HIT-T 15 cell, a Syrian hamster transformed beta-cell line. Alloxan caused beta-cell damages with DNA fragmentation, inhibition of glucose-stimulated insulin release, and decrease of cellular ATP level, but all of these beta-cell damages by alloxan were prevented by the presence of 20 mM glucose. Oligomycin, a specific inhibitor of ATP synthase, completely abolished the protective effects of glucose against alloxan-induced cell damage. Furthermore, treatment of nuclei isolated from HIT-T15 cells with ATP significantly prevented the DNA fragmentation induced by Ca2+. The results indicate that ATP produced during glucose metabolism plays a pivotal role in the protection of glucose against alloxan-induced beta-cell damage.
Adenosine Triphosphate/pharmacology ; Adenosine Triphosphate/metabolism ; Alloxan/pharmacology* ; Animal ; B-Lymphocytes/metabolism ; B-Lymphocytes/drug effects* ; B-Lymphocytes/cytology ; Calcium/pharmacology ; Cell Line ; Cell Nucleus/genetics ; Cell Nucleus/drug effects ; Cell Survival ; DNA/metabolism ; DNA/genetics ; DNA/drug effects ; DNA Fragmentation ; Dose-Response Relationship, Drug ; Egtazic Acid/pharmacology ; Glucose/pharmacology* ; Insulin/secretion ; Oligomycins/pharmacology

The ornithine aminotransferase (OAT) activity of mouse was found to be highest in the small intestine. The mitochondrial OAT from mouse small intestine was purified to homogeneity by the procedures including heart treatment, ammonium sulfate fractionation, octyl-Sepharose chromatography, and Sephadex G-150 gel filtration. Comparing to the amino acid sequence of mouse hepatic OAT, six N-terminal amino acid residues have been deleted in intestinal OAT. However, the subsequent sequence was identical with that of hepatic OAT. The molecular weights of both intestinal and hepatic OAT were estimated as 46 kDa by SDS-gel electrophoresis and as 92 kDa by gel filtration, indicating that both native OATs are dimeric. Biochemical properties of intestinal OAT, such as molecular weight, pH optimum and K(m) values for L-ornithine and alpha-ketoglutarate, were similar to those of hepatic OAT. However, intestinal OAT was more labile than hepatic OAT to tryptic digestion.
Amino Acid Sequence ; Animal ; Intestine, Small/enzymology* ; Liver/enzymology ; Male ; Mice ; Mice, Inbred ICR ; Molecular Sequence Data ; Molecular Weight ; Ornithine-Oxo-Acid Transaminase/metabolism* ; Ornithine-Oxo-Acid Transaminase/isolation & purification ; Ornithine-Oxo-Acid Transaminase/genetics* ; Tissue Distribution ; Trypsi

The purpose of this study was to examine professors’ and students’ perceptions of curriculum that fosters character in medical school. ‘Character’ can be defined as a desirable personality and the ability to be a good person. A total of 264 subjects (professors=131, students=133) participated in the study. Survey questions were divided into the three parts (education needs, factors of character, and curriculum management strategy). Data were analyzed by using t-test and one-way analysis of variance. Both professors and students recognized the need for character education. Professors were more aware of the need for education than students (t=4.35, p<0.01), and clinical professors were more aware of the need for education than basic medical science professors (t=3.48, p<0.01). Premedical students were more aware of the need for character-centered education than medical students in the later stages of their education (t=3.41, p<0.01). Professors and students commonly referred to ‘consideration and communication’ as the most important factor in building character. Professors considered ‘self-regulation’ more important than the students recognized, while students perceived ‘wisdom’ as more important than the professors did. There was a difference in preference for curriculum development (creating new subjects vs. revising existing subjects) between the two groups. However, both groups agreed on the teaching and evaluation methods. In conclusion, both groups acknowledged the need for character education. However, there were differences in perception on the major factors of character and preference for curriculum development. The results of this study may assist in designing character education in medical education.

No abstract available.
Glomerulonephritis, IGA* ; Immunoglobulin A* ; Korea*

The coronavirus disease (COVID-19) outbreak has reached global pandemic status as announced by the World HealthOrganization, which currently recommends reverse transcription polymerase chain reaction (RT-PCR) as the standard diagnostictool. However, although the RT-PCR test results may be found negative, there are cases that are found positive for COVID-19pneumonia on computed tomography (CT) scan. CT is also useful in assessing the severity of COVID-19 pneumonia. Whenclinicians desire a CT scan of a patient with COVID-19 to monitor treatment response, a safe method for patient transport isnecessary. To address the engagement of medical resources necessary to transport a patient with COVID-19, our institutionhas implemented the use of mobile CT. Therefore, we report two cases of COVID-19 pneumonia evaluated by using mobilecone-beam CT. Although mobile cone-beam CT had some limitations regarding its image quality such as scatter noise, motionand streak artifacts, and limited field of view compared with conventional multi-detector CT, both cases had acceptable imagequality to establish the diagnosis of COVID-19 pneumonia. We report the usefulness of mobile cone-beam CT in patients withCOVID-19 pneumonia.

OBJECTIVE: Endometriosis is a common and recurring gynecologic disease which have afflicting females of reproductive age. We investigated the efficacy of long-term, post-operative use of dienogest for ovarian endometrioma. METHODS: We studied 203 patients who had undergone laparoscopic or robotic surgery for ovarian endometrioma, and were administrated dienogest 2 mg/day beginning in July of 2013, and continuing. We evaluated side effects of dienogest and ultrasonography was performed every 6 months to detect potential recurrence of endometrioma (2 cm) in these post-surgical patients. RESULTS: The follow-up observation periods were 30.2±20.9 months from surgery. The mean age was 34.1±7.2 years old. The mean diameter of pre-operative endometrioma was 5.6±3.0 cm2. One hundred eighty-two (89.7%) women received dienogest continuously for 12.0±7.1 months. Of the subjects, 21 (10.3%) patients discontinued dienogest at 2.4±1.0 months. The most common side effect when dienogest was discontinued was abnormal uterine bleeding. The occurrence rate of vaginal bleeding was 15.8%, a number which did not differ significantly in patients with/without post-operative gonadotropin releasing hormone agonist administration. The other side effects were gastrointestinal trouble including constipation, acne, headache, depression, hot flush, weight gain, and edema. However, no serious adverse events or side effects were documented and recurrent endometriomas were diagnosed in 3 patients (1.5%). CONCLUSION: The data indicates that dienogest was both tolerable and safe for long-term use as prophylaxis in an effort to obviate the recurrence of ovarian endometrioma post-operatively, as well as potential need for surgical re-intervention.
Acne Vulgaris ; Constipation ; Depression ; Edema ; Endometriosis ; Female ; Follow-Up Studies ; Genital Diseases, Female ; Gonadotropin-Releasing Hormone ; Headache ; Humans ; Recurrence ; Ultrasonography ; Uterine Hemorrhage ; Weight Gain

Osteoclasts (OCs) are clinically important cells that resorb bone matrix. Accelerated bone destruction by OCs is closely linked to the development of metabolic bone diseases. In this study, we screened novel chemical inhibitors targeting OC differentiation to identify drug candidates for metabolic bone diseases. We identified that 1,3-dibenzyl-5-fluorouracil, also named OCI-101, is a novel inhibitor of osteoclastogenesis. The formation of multinucleated OCs is reduced by treatment with OCI-101 in a dose-dependent manner. OCI-101 inhibited the expression of OC markers via downregulation of receptor activator of NF-κB ligand and M-CSF signaling pathways. Finally, we showed that OCI-101 prevents ovariectomy-induced bone loss by suppressing OC differentiation in mice. Hence, these results demonstrated that OCI-101 is a good drug candidate for treating metabolic bone diseases.

OBJECTIVES: The aims of the study show the effect of cardiac disease of pregnant women on the perinatal complications and pregnancy outcomes. METHODS: From Jan. 2001 to Nov. 2005, 29 cases of pregnant women with cardiac disease were enrolled and classified by the NYHA (New York Heart Association) classes under the supervision of cardiologist and cardiothoracic surgeon. The average age of all cases is 29.9 years olds and it consists of 13 primigravida and 16 multigravida. For the examination of cardiac function during the pregnancy, the echocardiography was performed. We evaluated the cardiac disease of pregnant woman with the underlying causes, clinical manifestations during the pregnancy, delivery mode, gestational age at birth, birth weight, Apgar score and perinatal complication. RESULTS: All 29 cases with cardiac diseases are composed of 21 cases of NYHA class I (72.7%), 4 case of NYHA class II (13.7%) and 4 cases of NYHA class III (13.7%). There are 11 cases with congenital heart disease (37.9%), 6 cases with acquired heart disease (20.6%), 9 cases with arrhythmia (31.0%), and 3 cases with other cardiac disease (10.3%). Before the pregnancy, 6 cases of 11 cases with congenital heart disease and 5 cases of 6 cases with acquired heart disease performed the corrected cardiac surgery. Echocardiography was performed on 24 cases. It showed average ejection fraction in left ventricle of NYHA class I (13 cases) and NYHA class II, III (8 cases) were 61.5% and 52.6%, respectively. 7 cases of NYHA class I and 1 case of class II was done on the vaginal delivery. 14 cases of class I pregnant woman were performed the cesarean section according to obstetric indications but 3 cases of class II were performed the cesarean section for the prevention of cardiac risks. 4 cases of class III were performed the cesarean section according to obstetrics indications (2 cases) and for the prevention of cardiac risks (2 cases). For gestational age at birth, the average of NYHA class I was 38.1 weeks and the average of NYHA class II, III was 35.4 weeks. The average birth weight showed 3,022 gm in class I and 2,446 gm in class II and class III. Preterm birth were 3 cases (class II; 1 case, class III ; 2 cases). Low birth weight infant were 5 cases (class I; 3 cases, class II 2 cases). Intrauterine fetal death was a case (class I). Congenital abnormalities at birth were not observed in our study. Although no maternal mortality was observed, 2 cases of pulmonary edema caused by cardiomyopathy in NYHA class III and 1 case of Eisenmenger Syndrome caused by PDA in NYHA class II were developed during the labor. CONCLUSION: In this study, the majority of pregnant women with cardiac disease had the congenital heart diseases. It also showed that they can expect good perinatal outcomes by the adequate prenatal care including cardiac surgery before the pregnancy.
Apgar Score ; Arrhythmias, Cardiac ; Birth Weight ; Cardiomyopathies ; Cesarean Section ; Congenital Abnormalities ; Echocardiography ; Eisenmenger Complex ; Female ; Fetal Death ; Gestational Age ; Heart ; Heart Defects, Congenital ; Heart Diseases* ; Heart Ventricles ; Humans ; Infant, Low Birth Weight ; Infant, Newborn ; Maternal Mortality ; Obstetrics ; Organization and Administration ; Parturition ; Pregnancy ; Pregnancy Outcome ; Pregnant Women* ; Premature Birth ; Prenatal Care ; Pulmonary Edema ; Thoracic Surgery

PURPOSE: The purpose of this study is to confirm the clinical usefulness of the Alvarado score's application and the differences in diagnostic values between male and female for patients who were diagnosed with acute appendicitis when they came to the hospital for pain in the right lower abdomen. METHODS: The subjects of this study were 211 patients who entered the surgical department of this hospital for doubtful acute appendicitis from June 2003 to May 2005. Using a retrospective method, we examined the patients' records and compared their ages, sex, symptoms, preoperative physical examinations, leukocyte and neutrophils figures, and the final postoperative pathological diagnosis. RESULTS: One hundred twelve patients were male, and 99 were female. A clinical Alvarado score of above 7 in sensitivity, specificity, positive predictive value, and negative predictive value was the standard for being judged positive. In this study, the sensitivity of the Alvarado score was 86.2%, its specificity was 61.6%, and the accuracy of diagnosis was 82.9%. The positive predictive value was 92.6%, and the negative predictive value was 51.0%. The accuracies were 83.9% and 81.8%, respectively, that for males being a little higher than that for female, but with no statistically significant differences. CONCLUSIONS: This study showed that the diagnosis of acute appendicitis was highly accurate for an Alvarado score above 7 (82.9%). The diagnosis of acute appendicitis by using the Alvarado score is simple, fast, reliable, and repeatable, and it can be used under any conditions without other expensive and complicated diagnostic tools.
Abdomen ; Appendicitis* ; Diagnosis* ; Female ; Humans ; Leukocytes ; Male ; Neutrophils ; Physical Examination ; Retrospective Studies ; Sensitivity and Specificity

BACKGROUND: Although hypometabolism of positron emission tomography (PET) helps lateralization of epileptic focus in temporal lobe epilepsy (TLE), the mechanism of PET hypometabolism (PET-Hypo) is still controversial. We investigated whether interictal spike frequency during distribution phase of 18F-fluorodeoxyglucose (DP-FDG) correlates with the degree of PET-Hypo in TLE. METHODS: FDG PET was performed in 21 TLE patients. In PET, polar, mesial, anterior, middle and posterior temporal ROIs (region of interests) were determined in superior, middle and inferior transtemporal planes. PET Asymmetry index (AI) of each ROI was obtained by (right-left)/(right+left) x 2. Scalp EEG was recorded from 30 min prior to FDG injection until the end of scanning. Interictal spikes on temporal electrodes (F7, F8, FT9, FT10, T3, T4, T5 and T6) were counted during DP-FDG. Left-Right difference of spike numbers on electrodes of both temporal regions was obtained by subtracting spike number of right temporal region from that of left side. RESULTS: Average number of interictal spikes during FDG-DP was 11.5 per patient. Distributions of spikes were anterior temporal (F7, F8, FT9, FT10):70.7%, mid-temporal (T3,T4):29.3%, posterior temporal (T5,T6):0%. Left-Right difference of spike number was strongly correlated with PET AI of whole temporal region (r=0.655, p=0.002). Lateralization of all PET-Hypo was concordant to that of interictal spike dominance during DP-FDG although 2 cases showed false lateralization of epileptic focus by PET. CONCLUSIONS: FDG PET hypometabolism was significantly correlated with DP-FDG interictal spike numbers. Anterior and polar temporal regions showed the best correlation. PET-Hypo may reflect not only permanent functional deficit but also transient regional cerebral dysfunction.
Electrodes ; Electroencephalography ; Epilepsy, Temporal Lobe* ; Humans ; Positron-Emission Tomography ; Scalp ; Temporal Lobe*