Evaluation of the Viability of Rat Periodontal Ligament Cells after Storing at 0℃/2 MPa Condition up to One Week: In Vivo MTT Method

PURPOSE: The aim of this study was to evaluate the rat periodontal ligament cell viability under 0℃/2 MPa condition up to one week using in vivo 3-(4,5-dimethylthiazol-2-y1)-2,5-diphenyltetrazolium bromide (MTT) assay. MATERIALS AND METHODS: As soon as 110 upper molar teeth of rats were extracted, they were stored in Hartman's solution under 0℃/2 MPa condition for 1, 2, 3, 4, and 7 days each. All specimens were treated with in vivo MTT assay and the value of optical density was measured by ELISA reader. These values were statistically analyzed by one-way ANOVA. RESULT: There was no statistical difference on MTT value between immediate and 1 day storage group. There were statistically significant differences between 1 day and 2 days tsorage, 2 and 3 days storage groups, respectively. Teeth of 3,4, and 7 days storage groups showed significantly lower MTT valuesc ompared with shorter period storage groups. CONCLUSION: When the MTT values were substituted in standard curve, 1 day storage group at 0℃/2 MPa condition showed 68% cell viability when compared with immediate group. It dropped to 13% at 2 days, and to less than 5% at 3 days or more.

Percutaneous Cardiopulmonary Support Experience of a National University Hospital in Busan / 고신대학교의과대학학술지

OBJECTIVES: Cardiopulmonary support has been used to treat the patients with refractory cardiogenic shock since 1950s. In advent of portable system its use has been widened considerably. In this retrospective study, we report our single center experience concerning possible indications, complications and outcomes of percutanous cardiopulmonary support (PCPS). METHODS: From January 2013 to March 2014, we searched the patients who were supported by PCPS system by reviewing the medical records in cardiology department at our Hospital. Infectious organism was limited to what was identified within 2 weeks after weaning of PCPS. RESULTS: A total of 9 patients were supported by PCPS with CAPIOX CX(R) system (Terumo inc., Tokyo, Japan) initially for ST-segment elevation myocardial infarction/non ST-segment elevation myocardial infarction in 4 patients, myocarditis in 3 patients, valvular heart disease in 1 patient, and acute respiratory distress syndrome in 1 patient. The mean duration of PCPS support was 79.1+/-76.6 hours and 5 of them were recovered and discharged alive. All the patients needed transfusions of various forms of blood products. And there was one major stroke and one hyperbilirubinemia in related to PCPS treatment. CONCLUSIONS: PCPS treatment was a valuable means to treat the patients with cardiovascular collapse, but not without costs. Efforts to reduce its associated complications should be made to improve outcomes.

The Natural Course of Endobronchial Inflammatory Polyps as a Complication after Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration / 결핵및호흡기질환

We presented a case of unusual endobronchial inflammatory polyps as a complication following endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in a patient with tuberculous lymphadenitis. EBUS-TBNA of the right hilar lymph node was performed in a 29-year-old, previously healthy man. The patient was confirmed with tuberculous lymphadenitis and received antituberculosis medication over the course of 6 months. Chest computed tomography, after 6 months of antituberculosis therapy following the EBUS-TBNA showed nodular bronchial wall thickening of the right main bronchus. Histological and microbiological examinations revealed inflammatory polyps. After 7 months, the inflammatory polyps regressed almost completely without need for removal.

Pancreatoblastoma in an Adult / 대한췌담도학회지

A blastoma is a type of cancer, which is common in children; it is caused by malignancies derived from in the precursor cells, often called blasts. Examples are nephroblastomas, retinoblastomas, pleuropulmonary blastomas, and pancreatoblastomas. Pancreatoblastomas are extremely rarely in adults. It is difficult preoperatively to distinguish this tumor from other pancreatic tumors including solid and papillary epithelial neoplasm of the pancreas (SPEN), acinar cell carcinoma, islet cell tumor, and ductal adenocarcinoma with cystic degeneration. To our knowledge, this case may be the second report of a pancreatoblastoma occurring in an adult in Korea. We report a case of a pancreatoblastoma that was confirmed by pathology, despite the radiologic finding that assumed it was a SPEN.

New-Onset Malignant Pleural Effusion after Abscess Formation of a Subcarinal Lymph Node Associated with Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration / 결핵및호흡기질환

We present a case of an unusual infectious complication of a ruptured mediastinal abscess after endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA), which led to malignant pleural effusion in a patient with stage IIIA non-small-cell lung cancer. EBUS-TBNA was performed in a 48-year-old previously healthy male, and a mediastinal abscess developed at 4 days post-procedure. Video-assisted thoracoscopic surgery was performed for debridement and drainage, and the intraoperative findings revealed a large volume pleural effusion that was not detected on the initial radiographic evaluation. Malignant cells were unexpectedly detected in the aspirated pleural fluid, which was possibly due to increased pleural permeability and transport of malignant cells originating in a ruptured subcarinal lymph node from the mediastinum to the pleural space. Hence, the patient was confirmed to have squamous cell lung carcinoma with malignant pleural effusion and his TNM staging was changed from stage IIIA to IV.

Case of Secondary Amyloidosis in a Patient with Ankylosing Spondylitis Refractory to TNF-alpha Inhibitors / 대한내과학회지

Secondary amyloidosis occurs in patients with chronic inflammatory diseases, such as rheumatoid arthritis (RA) and ankylosing spondylitis (AS). The major therapeutic approach to secondary amyloidosis involves controlling the underlying inflammatory disease. Tumor necrosis factor-alpha (TNF-alpha) inhibitors have revolutionized the treatment of rheumatic diseases; in many cases dramatic clinical improvement of secondary amyloidosis due to AS has been observed in response to treatment with these agents. However, the development of secondary amyloidosis associated with AS refractory to treatment with TNF-alpha inhibitors has been infrequently reported. Here, we described a case of a 37-year-old male patient with longstanding AS who was diagnosed with secondary amyloidosis due to high disease activity despite treatment with etanercept, adalimumab and infliximab.

A Common Bile Duct Web in Association with Bile Duct Stone Treated with Balloon Dilatation / 대한췌담도학회지

Bile duct web is very rare disease and it's etiology is controversial. Some webs are occurred in the presence of chronic inflammation, frequently associated with bile duct stone, but others are thought to be congenital. Many patients with bile duct web are asymptomatic, but they sometimes present symptom of biliary obstruction and cholangitis. It can be diagnosed by endoscopic retrograde cholangiopancreatogram, typically appearing as thin and shelf like radiolucent ring. We report a case of the common bile duct web with bile duct stones diagnosed by Endoscopic retrograde cholangiopancreatography (ERCP) in a 65-year-old man. The patient was treated by balloon dilatation successfully.