The use of bacteria in the treatment of cancer has a long and interesting history. The use of live bacteria in this way however has a number of potential problems including toxicity. Purified low molecular weight bacterial proteins have therefore been tested as anticancer agents to avoid such complications. Oral cancer is a widely occurring disease around the world and these lesions are typically very resistant to anticancer agents. In our present study we investigated the effects of purified recombinant azurin from Pseudomonas (P.) aeruginosa against YD-9 (p53-positive) human oral squamous carcinoma cells. Azurin showed cytotoxic effects against these cells in a dose dependent manner. The cell death accompanied by this treatment was found to be characterized by chromatin condensation and apoptotic bodies. Azurin treatment was further found to increase the expression of p53 The stabilization of p53 and induction of apoptosis in YD-9 cells by azurin suggests that it has potentially very strong anticancer properties in oral squamous carcinoma.
Antineoplastic Agents ; Apoptosis ; Azurin ; Bacteria ; Bacterial Proteins ; Carcinoma, Squamous Cell ; Cell Death ; Chromatin ; Humans ; Molecular Weight ; Mouth Neoplasms ; Pseudomonas ; Pseudomonas aeruginosa

The use of bacteria in the treatment of cancer has a long and interesting history. The use of live bacteria in this way however has a number of potential problems including toxicity. Purified low molecular weight bacterial proteins have therefore been tested as anticancer agents to avoid such complications. Oral cancer is a widely occurring disease around the world and these lesions are typically very resistant to anticancer agents. In our present study we investigated the effects of purified recombinant azurin from Pseudomonas (P.) aeruginosa against YD-9 (p53-positive) human oral squamous carcinoma cells. Azurin showed cytotoxic effects against these cells in a dose dependent manner. The cell death accompanied by this treatment was found to be characterized by chromatin condensation and apoptotic bodies. Azurin treatment was further found to increase the expression of p53 The stabilization of p53 and induction of apoptosis in YD-9 cells by azurin suggests that it has potentially very strong anticancer properties in oral squamous carcinoma.
Antineoplastic Agents ; Apoptosis ; Azurin ; Bacteria ; Bacterial Proteins ; Carcinoma, Squamous Cell ; Cell Death ; Chromatin ; Humans ; Molecular Weight ; Mouth Neoplasms ; Pseudomonas ; Pseudomonas aeruginosa

Although an immune response to bacillus Calmette Guerin (BCG) has often been associated with antitumor activity, the action mechanism(s) of intravesical BCG therapy for prophylaxis and treatment of superficial bladder cancer is not clearly understood. In an attempt to evaluate the roles of tumor necrosis factor (TNF)-alpha and lymphotoxin (LT) in the antitumor activity, TNF-alpha productivities by peripheral blood monocytes, serum levels of TNF-alpha, and LT productivities by peripheral blood lymphocytes were studied in superficial bladder cancer patients after six intravesical administrations of BCG. TNF-alpha productivities by peritoneal macrophages of guinea pigs were also studied after six intravesical administrations of BCG. The maximum TNF-alpha productivities by peripheral blood monocytes of superficial bladder cancer patients were seen after the fourth week of administration of BCG, and the serum TNF-alpha levels were also slightly increased after intravesical BCG administration in the superficial bladder cancer patients. LT productivities by peripheral blood lymphocytes of superficial bladder cancer patients were significantly enhanced and the maximum LT productivity was also seen after the third or fifth BCG administration. TNF-alpha productivities by peritoneal macrophages of guinea pigs were significantly enhanced and the maximum TNF-alpha productivity was seen after the second or third BCG administration. Our data might suggest that six consecutive intravesical BCG administrations could induce the increased productions of TNF-alpha and LT, which might play an important role in the antitumor activity in superficial bladder cancer.Although an immune response to bacillus Calmette Guerin (BCG) has often been associated with antitumor activity, the action mechanism(s) of intravesical BCG therapy for prophylaxis and treatment of superficial bladder cancer is not clearly understood. In an attempt to evaluate the roles of tumor necrosis factor (TNF)-alpha and lymphotoxin (LT) in the antitumor activity, TNF-alpha productivities by peripheral blood monocytes, serum levels of TNF-alpha, and LT productivities by peripheral blood lymphocytes were studied in superficial bladder cancer patients after six intravesical administrations of BCG. TNF-alpha productivities by peritoneal macrophages of guinea pigs were also studied after six intravesical administrations of BCG. The maximum TNF-alpha productivities by peripheral blood monocytes of superficial bladder cancer patients were seen after the fourth week of administration of BCG, and the serum TNF-alpha levels were also slightly increased after intravesical BCG administration in the superficial bladder cancer patients. LT productivities by peripheral blood lymphocytes of superficial bladder cancer patients were significantly enhanced and the maximum LT productivity was also seen after the third or fifth BCG administration. TNF-alpha productivities by peritoneal macrophages of guinea pigs were significantly enhanced and the maximum TNF-alpha productivity was seen after the second or third BCG administration. Our data might suggest that six consecutive intravesical BCG administrations could induce the increased productions of TNF-alpha and LT, which might play an important role in the antitumor activity in superficial bladder cancer.
Administration, Intravesical ; Animal ; Bladder Neoplasms/*metabolism/*therapy ; Female ; Guinea Pigs ; Human ; Mycobacterium bovis/*physiology ; Prospective Studies ; Support, Non-U.S. Gov't ; Tumor Necrosis Factor/*biosynthesis

PURPOSE: Partial nephrectomy has a similar oncologic outcome to radical nephrectomy while reducing cardiac and metabolic morbidity. However, previous studies reported that partial nephrectomy had been underutilized. The purpose of this study is to analyze trends in the use of partial nephrectomy in Korea and evaluate which individual factors and hospital factor influenced the operative approach. MATERIALS AND METHODS: Using URO-PDS database, 11560 patients underwent nephrectomy for renal cell carcinoma between 2006 and 2010 were identified. International Classification of Disease (ICD-9) diagnosis codes were applied to target subject of interest. Logistic regression was applied to identify determinants of partial nephrectomy. RESULTS: Over the study period, the proportion of partial nephrectomies has steadily increased from 9.4% in 2006 to 30.4% in 2010 (p<0.001). Deviation of utilization in partial nephrectomy has been observed based on the area (p<0.001) and type of surgery (p<0.001). Individual of younger age, as well as male, were more likely to be treated with partial nephrectomy (p<0.001 for each). Furthermore, Patient treated at hospitals with higher nephrectomy volume were more prone to be treated with partial nephrectomy (p<0.001 for each). CONCLUSIONS: Partial nephrectomies have been increasingly performed over the study period but are still underutilized.
Carcinoma, Renal Cell* ; Classification ; Diagnosis ; Humans ; Korea* ; Logistic Models ; Male ; Nephrectomy*

PURPOSE: We assessed the predictive factors for renal insufficiency in patients followed for more than 5 years after radical nephrectomy. MATERIALS AND METHODS: Age, gender, history of diabetes, history of hypertension, body mass index, preoperative estimated glomerular filtration rate (eGFR), serum uric acid, urine albumin, normal renal parenchymal volume, tumor size, and ratio of normal parenchymal volume of the removed kidney to that of the remaining kidney were evaluated retrospectively in 89 patients who underwent radical nephrectomy from January 2001 to December 2005. Patients were included whose renal parenchymal volume was measurable by use of perioperative imaging (computed tomography or magnetic resonance imaging), whose preoperative eGFR was greater than 60 mL/min/1.73 m2, and who were followed for more than 5 years. To measure renal parenchymal volume from imaging, we integrated the extent of the normal renal parenchyma from axial slides of images. RESULTS: In univariate and multivariate binary regression analysis, the parenchymal volume of the remnant kidney (p=0.001), a history of diabetes (p=0.035), and preoperative eGFR (p=0.011) were independent factors for renal insufficiency. By use of a receiver operating characteristic curve, a volume of 170 mL was determined to be an appropriate cutoff value, with sensitivity of 58.7% and specificity of 74.4% for the parenchymal volume of the remnant kidney for predicting eGFR less than 60 mL/min/1.73 m2 (area under the curve, 0.678). The parenchymal volume of the remnant kidney was also an independent factor for the downgrading of the chronic kidney disease category in the multivariate linear regression analysis (p=0.021). CONCLUSIONS: Preoperative eGFR, a history of diabetes, and the radiologic volume of the remaining kidney parenchyma could be useful factors for predicting postoperative renal function. Patients with parenchymal volumes of less than 170 mL have a higher risk of postoperative renal insufficiency, which should be considered carefully when choosing a treatment modality.
Body Mass Index ; Glomerular Filtration Rate ; Humans ; Hypertension ; Kidney ; Linear Models ; Magnetic Resonance Spectroscopy ; Nephrectomy ; Organ Size ; Renal Insufficiency ; Renal Insufficiency, Chronic ; Retrospective Studies ; ROC Curve ; Sensitivity and Specificity ; Tumor Burden ; Uric Acid

OBJECTIVES: Delirium is a common postoperative complication in old adults associated with adverse events including functional decline, longer lengths of stay, and risk of institutionalization. The purpose of this study is to evaluate the incidence, preoperative, intraoperative, and postoperative risk factors of postoperative delirium in spine surgery. METHODS: Seventy-nine patients who underwent spine surgery were included. Preoperative assessments included current medical illness, number of comorbid problems, and the number of medications by past medical history, medical record, and interview with patients and caregivers. Intraoperative risk factors were evaluated. Laboratory data were checked preoperatively and postoperatively. The presence of delirium was determined by the Korean version of Delirium Rating Scale (K-DRS). RESULTS: Postoperative delirium was found in patients (7.6%). There was an association suggested between older age and postoperative delirium in spine surgery (p<0.05). An association was suggested between increasing numbers of medical conditions and postoperative delirium (p<0.05). Preoperative hemoglobin, hematocrit, sodium, potassium, calcium, albumin levels and postoperative hemoglobin and total protein levels were in the delirium group was significantly lower than those in control group (p<0.05). CONCLSION: This study showed that the postoperative delirium in spine surgery is not rare and several preoperative and postoperative factors are involved in the development of delirium. This pilot study is the first prospective trial in the area of postoperative delirium in spine surgery with a small sample size and short-term period, so further research with large sample size will be necessary.
Adult ; Aged ; Calcium ; Caregivers ; Delirium* ; Hematocrit ; Humans ; Incidence ; Institutionalization ; Medical Records ; Pilot Projects* ; Postoperative Complications ; Potassium ; Prospective Studies ; Risk Factors ; Sample Size ; Sodium ; Spine*

Actinomycosis is a chronic suppurative and granulomatous disease caused by Actinomyces species, which normally colonize the mouth, colon, and vagina. Actinomycosis affects any organ and it is histologically characterized by sulfur granule. Most of abdominal actinomycosis develop following appendicitis, diverticulitis or perforated viscus. Abdominal actinomycosis is commonly misdiagnosed as other diseases of intestine because the clinical presentation is non-specific and the radiologic findings mimic tumor. We report a case of abdominal actinomycosis, which initially presented as hydronephrosis and finally diagnosed after laparotomy. Histological findings showed sulfur granules, chronic granulomatous inflammation, and acute inflammatory cells. In our knowledge, this is the first report in Korea of the abdominal actinomycosis associated with appendicitis and complicated with hydronephrosis.
Actinomyces ; Actinomycosis* ; Appendicitis ; Colon ; Diverticulitis ; Hydronephrosis* ; Inflammation ; Intestines ; Korea ; Laparotomy ; Mouth ; Sulfur ; Vagina

Actinomycosis is a chronic suppurative and granulomatous disease caused by Actinomyces species, which normally colonize the mouth, colon, and vagina. Actinomycosis affects any organ and it is histologically characterized by sulfur granule. Most of abdominal actinomycosis develop following appendicitis, diverticulitis or perforated viscus. Abdominal actinomycosis is commonly misdiagnosed as other diseases of intestine because the clinical presentation is non-specific and the radiologic findings mimic tumor. We report a case of abdominal actinomycosis, which initially presented as hydronephrosis and finally diagnosed after laparotomy. Histological findings showed sulfur granules, chronic granulomatous inflammation, and acute inflammatory cells. In our knowledge, this is the first report in Korea of the abdominal actinomycosis associated with appendicitis and complicated with hydronephrosis.
Actinomyces ; Actinomycosis* ; Appendicitis ; Colon ; Diverticulitis ; Hydronephrosis* ; Inflammation ; Intestines ; Korea ; Laparotomy ; Mouth ; Sulfur ; Vagina

BACKGROUND: Boerhaave's syndrome is a spontaneous rupture of the esophagus. The classic symptom triad, vomiting, chest pain, and subcutaneous emphysema, rarely develop together. It is diagnosed by using plain chest film, an esophagogram with a water soluble contrast media, and computerized tomography, but it is somewhat difficult to make an early diagnosis. It is generally treated with a surgical procedure, but the most frequent complication is suture line leakage, which leads to a pyothorax, pneumonia, mediastinitis, and eventually an irreversible septic condition. METHODS: We retrospectively reviewed 10 cases of patients with spontaneous esophageal rupture treated by various surgical methods during the recent 6 years at the Department of Surgery and Internal Medicine, the Catholic University of Korea. RESULTS: The results of the clinical reviews are as follows: There were 9 males and 1 female, and the mean age was 53 years old. The main symptom was chest pain (70%), and that developed after severe vomiting in 6 cases (60%). Abnormal findings were revealed on the chest PA films of 6 cases. Esophagogram were used in 8 cases, and a combined chest CT in 5 cases. Seven (70%) received an operation in less than 24 hours after the attack and 3 cases after 72 hours. The lower one-third of the esophagus was perforated in 9 cases (90%), and the left side of the esophagus was perforated in 8 cases (80%). The methods of operation were primary repair (6 cases), an esophagectomy and esophagogastrostomy (3 cases), and a cardial ligation, proximal esophagostomy, gastrostomy, and feeding jejunostomy (1 case). Anastomosis leakage and empyema developed in each of 4 cases. The overall mortality rate was 20%; only two patients died due to a delayed hospital visit (surgery 72 hours after first attack of symptoms). CONCLUSIONS: We recommand that the most important factor affecting the prognosis for spontaneous rupture of the esophagus is early diagnosis and immediate surgical intervention.
Chest Pain ; Contrast Media ; Early Diagnosis ; Empyema ; Empyema, Pleural ; Esophagectomy ; Esophagostomy ; Esophagus* ; Female ; Gastrostomy ; Humans ; Internal Medicine ; Jejunostomy ; Korea ; Ligation ; Male ; Mediastinitis ; Middle Aged ; Mortality ; Pneumonia ; Prognosis ; Retrospective Studies ; Rupture ; Rupture, Spontaneous* ; Subcutaneous Emphysema ; Sutures ; Thorax ; Tomography, X-Ray Computed ; Vomiting

Infectious coryza (IC) is an infectious disease caused by Avibacterium (Av.) paragallinarum. IC is known to cause economic losses in the poultry industry via decreased egg production in layers. Between 2012 and 2013, Av. paragallinarum was isolated from seven chicken farms by Chungbuk National University. We identified Av. paragallinarum, the causative pathogen of IC by polymerase chain reaction (PCR) and serovar serotype A, by multiplex PCR. Antibiotic sensitivity tests indicated that a few field-isolated strains showed susceptibility to erythromycin, gentamicin, lincomycin, neomycin, oxytetracycline, spectinomycin, and tylosin. A serological survey was conducted to evaluate the number of flocks that were positive for Av. paragallinarum by utilizing a HI test to determine the existence of serovar A. Serological surveys revealed high positivity rates of 86.4% in 2009, 78.9% in 2010, 70.0% in 2011, and 69.6% in 2012. We also challenged specific pathogen-free chickens with isolated domestic strains, ADL121286 and ADL121500, according to the measured efficacy of the commercial IC vaccine, PoulShot Coryza. We confirmed the effectiveness of the vaccine based on relief of clinical signs and a decreased re-isolation rate of ADL121500 strain. Our results indicate IC is currently prevalent in Korea, and that the commercial vaccine is effective at protecting against field strains.
Agriculture ; Chickens* ; Chungcheongbuk-do ; Communicable Diseases ; Erythromycin ; Gentamicins ; Korea ; Lincomycin ; Multiplex Polymerase Chain Reaction ; Neomycin ; Ovum ; Oxytetracycline ; Polymerase Chain Reaction ; Poultry ; Serogroup ; Spectinomycin ; Tylosin