Mitochondrial biogenesis is known to accompany adipogenesis to complement ATP and acetyl-CoA required for lipogenesis. Here, we demonstrated that mitochondrial proteins such as ATP synthase alpha and beta, and cytochrome c were highly expressed during the 3T3-L1 differentiation into adipocytes. Fully-differentiated adipocytes showed a significant increase of mitochondria under electron microscopy. Analysis by immunofluorescence, cellular fractionation, and surface biotinylation demonstrated the elevated levels of ATP synthase complex found not only in the mitochondria but also on the cell surface (particularly lipid rafts) of adipocytes. High rate of ATP (more than 30 micrometer) synthesis from the added ADP and Pi in the adipocyte media suggests the involvement of the surface ATP synthase complex for the exracellular ATP synthesis. In addition, this ATP synthesis was significantly inhibited in the presence of oligomycin, an ATP synthase inhibitor, and carbonyl cyanide m-chlorophenylhydrazone (CCCP), an ATP synthase uncoupler. Decrease of extracellular ATP synthesis in acidic but not in basic media further indicates that the surface ATP synthase may also be regulated by proton gradient through the plasma membrane.
Adenosine Triphosphate/analysis/*biosynthesis ; Adipocytes/*enzymology/ultrastructure ; Animals ; Cell Differentiation/physiology ; Cell Membrane/chemistry ; Cells, Cultured ; Humans ; Membrane Microdomains/chemistry/*enzymology ; Mice ; Mitochondria/metabolism/ultrastructure ; Mitochondrial Proton-Translocating ATPases/analysis/*physiology ; Research Support, Non-U.S. Gov't

No abstract available.
Bile Duct Neoplasms/*diagnosis/pathology ; Cystadenocarcinoma/*diagnosis/pathology ; Diagnostic Errors ; Humans ; Liver/pathology ; Liver Abscess/diagnosis ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Tomography, X-Ray Computed

Klinefelter's syndrome (KFS) is a gonosomal aberration disease that occurs in males, and is characterized by 47, XXY karyotype, hypogonadism and a lack of secondary sexual characteristics. A potential link between this hormonally deficient syndrome and autoimmune disease, particularly systemic lupus erythematosus (SLE), has been reported. On the other hand, KFS is rarely reported to be accompanied by rheumatoid arthritis (RA), and there are no Korean cases reported. We report the first Korean case of a KFS patient with sero-positive RA and discuss the role of the pathogenesis of RA with KFS.
Aluminum Hydroxide ; Arthritis, Rheumatoid ; Autoimmune Diseases ; Carbonates ; Hand ; Humans ; Hypogonadism ; Karyotype ; Klinefelter Syndrome ; Lupus Erythematosus, Systemic ; Male ; X Chromosome

Sweet's syndrome is characterized by a constellation of clinical symptoms, physical features, and pathologic findings, which include fever, leukocytosis, tender erythematous skin lesions, and a diffuse infiltrate consisting predominantly of mature neutrophils in the upper dermis. Pulmonary involvement in Sweet's syndrome is rare. In addition, a pleural effusion has been rarely reported in the pulmonary involvement of Sweet's syndrome. We report a case of Sweet's syndrome presenting with pulmonary involvement and a bilateral pleural effusion in a patient with myelodysplastic syndrome.
Dermis ; Fever ; Humans ; Leukocytosis ; Myelodysplastic Syndromes ; Neutrophils ; Pleural Effusion ; Skin ; Sweet Syndrome

Extracellular ATP (exATP) has been known to be a critical ligand regulating skeletal muscle differentiation and contractibility. ExATP synthesis was greatly increased with the high level of adenylate kinase 1 (AK1) and ATP synthase beta during C2C12 myogenesis. The exATP synthesis was abolished by the knock-down of AK1 but not by that of ATP synthase beta in C2C12 myotubes, suggesting that AK1 is required for exATP synthesis in myotubes. However, membrane-bound AK1beta was not involved in exATP synthesis because its expression level was decreased during myogenesis in spite of its localization in the lipid rafts that contain various kinds of receptors and mediate cell signal transduction, cell migration, and differentiation. Interestingly, cytoplasmic AK1 was secreted from C2C12 myotubes but not from C2C12 myoblasts. Taken together all these data, we can conclude that AK1 secretion is required for the exATP generation in myotubes.
Adenosine Triphosphate/*biosynthesis ; Adenylate Kinase/*metabolism ; Animals ; Cell Line ; Extracellular Space/metabolism ; Isoenzymes/*metabolism ; Mice ; Muscles/cytology/*metabolism

PURPOSE: The adult tetanus, reduced diphtheria, and acellular pertussis (Tdap) vaccine has been introduced in order to provide individual protection and reduce the risk of transmitting pertussis to infants. We assessed the knowledge and acceptability of the Tdap vaccine around pregnancy. MATERIALS AND METHODS: This study was a cross-sectional survey of women of childbearing age (20-45 years) who visited obstetrics and gynecologic units of primary, secondary, or tertiary hospitals. They were asked to fill in a questionnaire assessing their knowledge, attitudes, and acceptability of Tdap. RESULTS: The questionnaire was completed by 308 women; 293 (95.1%) had not received information from doctors about Tdap, and 250 (81.2%) did not know about the need for vaccination. A significantly important factor related to subjects' intention to be vaccinated, identified by stepwise multiple logistic regression, was the knowledge (OR 13.5, CI 3.92-46.33) that adult Tdap is effective in preventing pertussis for infants aged 0-6 months. Additionally, 276 (89.6%) considered the recommendation of obstetric doctors as the most influencing factor about Tdap vaccination. CONCLUSION: In Korea, most women of childbearing age seem to be neither recommended nor adequately informed about the vaccination, although our population was not a nationwide representative sample. Information given by healthcare workers may be critical for improving awareness and preventing pertussis.
Adult ; Cross-Sectional Studies ; Diphtheria ; Diphtheria-Tetanus-acellular Pertussis Vaccines/*administration & dosage ; Female ; Health Knowledge, Attitudes, Practice/*ethnology ; Humans ; Immunization/*statistics & numerical data ; Infant ; Logistic Models ; Multivariate Analysis ; Patient Acceptance of Health Care/*ethnology/statistics & numerical data ; Pregnancy ; Republic of Korea/epidemiology ; Risk ; Surveys and Questionnaires ; Tetanus ; Vaccination ; Whooping Cough/diagnosis/ethnology

Diabetes mellitus is a known risk factor for Klebsiella pneumoniae liver abscess, and may be associated with metastatic complications. We report a case of diabetic ketoacidosis (DKA) precipitated by a K. pneumoniae liver abscess and followed by a brain abscess. A 31-year-old man with uncontrolled type 2 diabetes was admitted for DKA. Abdominal and pelvic computed tomography scans showed multiple abscesses in the lung, liver, both kidneys, and prostate gland. The blood culture yielded K. pneumoniae. The patient's condition improved following antibiotic and insulin therapy, and he was discharged. However, he was rehospitalized 10 days after discharge due to a generalized tonic-clonic seizure. Brain magnetic resonance imaging revealed a brain abscess in the right basal ganglia. The patient was given an intravenous injection of antibiotics (vancomycin and carbapenem), and he recovered well with no neurological sequelae.
Abscess ; Adult ; Anti-Bacterial Agents ; Basal Ganglia ; Brain ; Brain Abscess ; Diabetes Mellitus ; Diabetic Ketoacidosis ; Humans ; Injections, Intravenous ; Insulin ; Kidney ; Klebsiella ; Klebsiella pneumoniae ; Liver ; Liver Abscess ; Lung ; Magnetic Resonance Imaging ; Pneumonia ; Prostate ; Risk Factors ; Seizures

Spontaneous intramural hematoma of the esophagus is a rare condition in which an intramural hemorrhage leads to a varying degree of submucosal dissection of the esophageal wall. This disorder has been seen predominantly in women in the sixth or seventh decade and has occured with variable etiology. The pathogenesis of this disorder has yet to be clarified. The triad of symptoms of this disorder includes retrostemal pain, mild hematemesis and odynophagia. The diagnosis is usually made by endoscnpy or with an esophagogram, It is important to differentiate esophageal submucosal dissection from other disorders of similar appearance, such as Mallory-Weiss syndrome, esophageal perforation, or dissecting aneurysm, all of which require surgical treatment. The prognosis of spontaneous intramural hematoma of the esophagus (SIHE) is excellent with conservative therapy, but close follow-up care is necessary. A 62-year-old female was admitted to our hospital complaining of chest pain and hematemesis. Endoscopic features showed a large bluish hematoma which obliterated esophageal lumen from the proximal esophagus. We report a case of spontaneous intramural hematoma of the esophagus showing typical endoscopic findings with spontaneous improvement with a review of the literature.
Aneurysm, Dissecting ; Chest Pain ; Diagnosis ; Esophageal Perforation ; Esophagus* ; Female ; Follow-Up Studies ; Hematemesis ; Hematoma* ; Hemorrhage ; Humans ; Mallory-Weiss Syndrome ; Middle Aged ; Prognosis

OBJECTIVE: The aims of the present study were to investigate the women's perspective on influenza infection and vaccination and to evaluate how they influence vaccine acceptability, in Korean women of childbearing age. METHODS: This was a prospective study by random survey of women of childbearing age (20 to 45 years). They were asked to complete a questionnaire assessing their knowledge, attitudes and acceptability of influenza vaccination before and during pregnancy. This study utilized data from the Korea National Health and Nutrition Examination Survey (KNHANES) between 2008 and 2012, to analyze the recent influenza vaccination trends. RESULTS: According to KNHANES (2008-2012), influenza vaccination rates in women of childbearing age have increased up to 26.4%, after 2009. The questionnaire was completed by 308 women. Vaccination rate during pregnancy or planning a pregnancy was 38.6%. The immunization rate increased significantly with the mean number of correct answers (P<0.001). Women who received influenza vaccination were more likely to be previously informed of the recommendations concerning the influenza vaccination before or during pregnancy, received the influenza vaccination in the past, and of the opinion that influenza vaccination is not dangerous during pregnancy, with odds ratios of 14.6 (95% confidence interval [CI], 6.44 to 33.33; P<0.0001), 3.6 (95% CI, 1.84 to 6.97; P=0.0002) and 2.7 (95% CI, 1.34 to 5.47; P=0.0057). CONCLUSION: Influenza vaccination rate in women of childbearing age has increased in this study and national data. More information and recommendation by healthcare workers, especially obstetricians, including safety of vaccination, might be critical for improving vaccination rate in women of childbearing age.
Delivery of Health Care ; Female ; Humans ; Immunization ; Influenza, Human* ; Korea ; Nutrition Surveys ; Odds Ratio ; Pregnancy ; Prospective Studies ; Surveys and Questionnaires ; Vaccination*

BACKGROUND/AIMS: Endoscopic retrograde cholangiopancreatography (ERCP) is a difficult procedure to perform on patients who have undergone a Billroth II gastrectomy, Whipple's operation or Roux-en-Y gastrobypass surgery. Our study was designed to evaluate the clinical usefulness of cap-assisted ERCP for beginner endoscopists in cases of surgically altered anatomy. METHODS: From April 2008 to March 2010, 16 patients with biliary diseases and who had previously undergone abdominal surgery such as Billroth II gastrectomy or Roux-en-Y operation were analyzed. A single endoscopist performed all the procedures using a cap-assisted gastroscope, after ERCP training. RESULTS: Cap-assisted ERCP was attempted in 24 sessions of 16 patients. Afferent loop intubation and selective bile duct cannulation was successfully achieved in 19 sessions (79.1%). Among the patients who had undergone a Billroth II gastrectomy, 19 out of 20 sessions were successfully conducted. Only 4 patients who had undergone a previous Roux-en-Y operation failed afferent loop intubation. Duodenal free wall perforation developed in one case. There were no cases of mortality. CONCLUSIONS: Therapeutic cap-assisted ERCP was useful in patients who had previously undergone a Billroth II gastrectomy and this may be helpful for inexperienced endoscopists.
Anastomosis, Roux-en-Y ; Bile Ducts ; Catheterization ; Cholangiopancreatography, Endoscopic Retrograde ; Gastrectomy ; Gastroenterostomy ; Gastroscopes ; Humans ; Intubation