No abstract available.
Brain Neoplasms* ; Brain*

The one event on signaling mechanism is the cleavage by adenyl cyclase of ATP into second messenger, cyclic AMP. The other transfer system of inositol metabolism, it is widely recognized that hydrolysis of the minor membrane lipid phosphoinositide bisphosphate (PIP₂) initiated by occupation of certain receptors and catalyzed by phospholipase C, lead to toe generation of the two intracellular messengers, inositol triphosphate (IP₃) and diacylglycerol (DG). IP₃ is converted to inositol tetrakisphosphate (IP₄) by IP₃ kinase. In the present study, it is that purification of calmodulin is used by phenyl-Sepharose CL-4B chromatography, it's molecular weigh, 17,000 in SDS-polyacrylamide gel electrophoresis. In order to observe the affinity between calmodulin (CaM)-Affigel 15 and IP₃ kinase, and isolated IP₃ kinase, was applied in CaM-Affigel with Ca²⁺ equilibrium buffer and EGTA equilibrium buffer. We compared with binding and elution effect of IP₃ kinase in several condition of buffer. In affinity of binding, Ca²⁺ equilibrium buffer was in the most proper condition, and elution, CaM/Ca²⁺buffer (CE 1 10.36, CE2 12.76pM/min/mg of protein) was effected much more than EGTA buffer (E2 1.48, E 2.43pM/min/mg of protein), but CaM/Ca²⁺stimulate the activity of IP₃ kinase. And then, several detergents such as sodium deoxycholate, tween 20, cholic acid, polyethylene glycol, chaps were applied. The 0.2% chaps buffer (E2 23.19, E3 8.05pnM/min/mg of protein) was the most effective in elution of IP3 kinase.
Adenosine Triphosphate ; Adenylyl Cyclases ; Brain* ; Calmodulin ; Cholic Acid ; Chromatography ; Cyclic AMP ; Deoxycholic Acid ; Detergents ; Egtazic Acid ; Electrophoresis ; Hydrolysis ; Inositol* ; Membranes ; Metabolism ; Occupations ; Phosphotransferases* ; Polyethylene Glycols ; Polysorbates ; Second Messenger Systems ; Toes ; Type C Phospholipases

No abstract available.
Humans* ; Rotavirus Infections* ; Rotavirus*

This study aimed to identify the predictors of health-related quality of life (HRQoL) in Korean adults with cardiovascular disease (CVD). Methods: This was a cross-sectional study with a stratified multistage probability sampling design. Data from the 2016 to 2019 Korea National Health and Nutrition Examination Survey (n=32,379) were used. Among the participants aged 19 years or older (n=25,995), 1,081 patients with CVD were extracted after excluding those with missing data and those who had cancer. The participants’ HRQoL was measured using the three-level EuroQoL Group’s five-dimension questionnaire (EQ-5D) scale. Data were analyzed using the t-test, one-way analysis of variance, and general linear regression for complex samples. Results: The most potent predictors of HRQoL in Korean adults with CVD were limited activity (β =−0.103, p <0.001), poor perceived health (β =−0.089, p <0.001), depression (β =−0.065, p<0.01), low household income (β=−0.033, p<0.05), unemployment (β=−0.023, p<0.05), and older age (β=−0.002, p<0.01), which explained 37.2% of the variance. Conclusion: Comprehensive interventions that address both physical and mental factors and social systems that provide financial help need to be implemented to improve the HRQoL of Korean adults with CVD.

PURPOSE: Muscle mass, strength, and composition determine muscle quantity and quality. However, data on muscle properties in relation to bone mass or insulin resistance are limited in Asian populations. This study aimed to investigate the relative importance of muscle measurements in regards to their relationship with lower bone mass and insulin resistance. MATERIALS AND METHODS: In this study, 192 postmenopausal women (age, 72.39±6.07 years) were enrolled. We measured muscle cross-sectional area (CSA) and attenuation at the gluteus maximus and quadriceps muscles through quantitative computed tomography. Muscle strength and physical performance were evaluated with the hand grip test and Short Physical Performance Battery (SPPB). Pearson correlation analysis and linear regression were performed to evaluate the relationship between muscle properties and homeostatic model assessment-insulin resistance (HOMA-IR) or bone mineral density (BMD). RESULTS: Muscle CSA, hand grip strength, and SPPB score held positive correlations with spine and hip BMDs, but not with insulin resistance. In contrast, muscle attenuation of the gluteus maximus or quadriceps was inversely related to HOMA-IR (r=−0.194, p=0.018 and r=−0.292, p<0.001, respectively), but not BMD. Compared with the control group, muscle CSA was significantly decreased in patients with osteoporosis; however, decreased muscle attenuation, indicating high fat infiltration, was found only in patients with diabetes. CONCLUSION: Muscle mass, strength, and physical performance were associated with low bone mass, and accumulation of intramuscular fat, a histological hallmark of persistently damaged muscles, may play a major role in the development of insulin resistance in Korean postmenopausal women.
Asian Continental Ancestry Group ; Bone Density ; Female ; Hand ; Hand Strength ; Hip ; Humans ; Insulin Resistance ; Insulin ; Linear Models ; Muscle Strength ; Muscles ; Osteoporosis ; Quadriceps Muscle ; Sarcopenia ; Spine

PURPOSE: In children on anticancer chemotherapy, bloodstream infections (BSIs) are a major cause of morbidity and mortality. We investigated febrile episodes and bloodstream infections in pediatric cancer patients to guide proper selection of empiric antibiotics for febrile pediatric hemato-oncologic patients. METHODS: All febrile episodes treated in the division of hematology-oncology, the department of pediatrics, Hanyang University Hospital, between July 2005 and June 2008 were reviewed. Episodes with and without bloodstream infections were compared. RESULTS: Forty cases (18.9%, 25 patients) of BSI occurred in 212 febrile episodes (63 patients). Thirty-seven cases (23.6%, 22 patients) of BSI occurred in 157 febrile episodes with neutropenia (54 patients). Microorganisms identified in BSI corresponded to 23 gram-positive bacteria (51.2%), 20 gram-negative bacteria (44.5%), and 2 fungi (4.4%). Rates of BSI between those who had received umbilical cord blood transplantation and those who had received transplantation from other source were significantly different (55.0% vs. 7.7%, P=0.001). No differences in mortality rate were observed among organisms in BSI patients. For febrile episodes the rate of BSI was higher among those with Chemoport than those with Hickman catheter (P=0.029) and gram-positive pathogens were more likely to be associated with Chemoport (P=0.001). CONCLUSION: The study showed the rate of BSI, distribution of pathogens with regard to neutropenia, transplantation, central venous catheters, and antimicrobial susceptibility of pathogens in order to help guide in the choice of optimal empiric antibiotics in pediatric febrile neutropenic hemato-oncologic patients.
Anti-Bacterial Agents ; Bacteremia ; Catheters ; Central Venous Catheters ; Child ; Fetal Blood ; Fever ; Fungi ; Gram-Negative Bacteria ; Gram-Positive Bacteria ; Humans ; Neutropenia ; Pediatrics ; Transplants

No abstract available.

To study the clinical characteristics and treatment results of childhood soft tissue sarcoma, the retrospective study was performed on 67 patients with soft tissue sarcoma, experienced at the Department of Pediatrics, Seoul National University Hospital from January, 1982 to July, 1990. The median age of 67 soft tissue sarcoma patients was 4 years 5 months and age distribution showed that 0-4 year age group was most common (55.2%). The sex ratio of male to female was 1.2:1. There were 3 cancers among relatives of soft tissue sarcoma patients, including one cancer among first-degree relatives. As for pathological classification, rhabdomyosarcoma (67.1%) was the most common childhood soft tissue sarcoma, followed by malignant Schwannoma (8.9%), extraskeletal Ewing's sarcoma (6.0%), infantile fibrosarcoma (4.5%), malignant fibrous histiocytoma (3.0%), malignant hemangiopericytoma (3.0%), and there were 1 case each of angiosarcoma, leiomyosarcoma, synovial sarcoma, malignant mesenchymoma and mesenchymal chondrosarcoma. The median age of 45 rhabdomyosarcoma patients was 3 years 8 months and age distribution showed that 0-4 year age group was most common (64.5%). Twenty three patients were male and 22 were female. The histologic subtype of rhabdomyosarcoma was embryonal type in 38 patients (84.5%), alveolar type in 5 patients (11.1%) and unclassified type in 2 patients (4.4%). As for primary site of soft tissue sarcomas, the most frequent site was the head and neck region (32.8%) including parameningeal region (13.4%) and orbit (6.0%), followed by extremities (20.9%), trunk (19.4%), retroperitoneum and pelvis (11.9%), urogenital region (7.5%), perineum and perianal region (4.5%) and other region (3.0%). As for primary site of 45 rhabdomyosarcoma cases, the most frequent site was also the head and neck region (37.8%). The most common initial symptom of soft tissue sarcoma patients was mass (68.7%). As for Intergroup Rhabdomyosarcoma Study clinical grouping system of 67 soft tissue sarcoma patients, clinical group III (58.2%) was most common, followed by clinical group II(20.9%), IV (14.9%) and I (6.0%). Of 10 cases of clinical group IV with distant metastasis, lung (8 cases) was the most common metastaic region and other metastatic regions were bone, kidney, liver and bone marrow. As for IRS clinical grouping system of 45 rhabdomyosarcoma patients, clinical group III was most common (68.9%). Of 6 cases of clinical group IV, lung (5 cases) was also the most common metastatic region, followed by kidney and liver. From 1982 to 1985, chemotherapy was done with pulse VAC or pulse VAdrC-VAC regimen based on IRS-I and IRS-II. From 1986, patients in clinical group I and II received vincristine and actinomycin-D for 1 year and patients in clinical group III, IV and II with alveolar histologic subtype(unfavorable histologic group) received vincristine, actinomycin-D, adriamycin, cyclophosphamide and cisplatinum based on IRS-III. Radiation therapy was administered to patients in clinical group II, III and IV. Of 67 cases of soft tissue sarcoma, 54 case were eligible for treatment analysis. The 3 year disease free survival (DFS) of all 54 cases was 54.1%, 3 year DFS of clinical group I and II was 83.9%,3 year DFS of clinical group III and IV before 1986 was 35.7% and after 1986 was 48.2%. Of 45 cases of rhabdomyosarcoma, 41 cases were eligible for treatment analysis. The 3 year DFS of all 41 cases was 49.1%,3 year DFS of clinical group I and II was 87.5%,3 year DFS of clinical group III and IV before 1986 was 27.2% and after 1986 was 45.0%. Patients in clinical group I and II who had no gross residual tumor after primary surgical excision had best prognosis with 3 year DFS approximating 90% with only 2 drugs regimen, significantly better than patients in clinical group III and IV with 3 year DFS below 50% even after intensifying chemotherapy since year 1986. This analysis suggests that total surgical removal is very important for improving prognosis and should be undertaken where possible in all patients without distant metastasis. Treatment results also showed that after year 1986 with intensification of chemotherapy, 3 year DFS of clinical group III and IV as well as early toxic deaths increased, and after lowering doses of chemotherapeutic agents of regimen 35 of IRS-III, treatment results improved much. Therfore to improve prognosis of patients with gross residual tumor after surgical excision of biopsy and patients with distant metastasis at diagnosis, intensified multiagent chemcherapeutic regimen with adequate dose modification should be done to lower early toxic deaths.
Age Distribution ; Biopsy ; Bone Marrow ; Chondrosarcoma, Mesenchymal ; Classification ; Cyclophosphamide ; Diagnosis ; Disease-Free Survival ; Doxorubicin ; Drug Therapy ; Extremities ; Female ; Fibrosarcoma ; Head ; Hemangiopericytoma ; Hemangiosarcoma ; Histiocytoma, Malignant Fibrous ; Humans ; Kidney ; Leiomyosarcoma ; Liver ; Lung ; Male ; Mesenchymoma ; Neck ; Neoplasm Metastasis ; Neoplasm, Residual ; Neurilemmoma ; Orbit ; Pediatrics ; Pelvis ; Perineum ; Prognosis ; Retrospective Studies ; Rhabdomyosarcoma ; Sarcoma* ; Sarcoma, Ewing ; Sarcoma, Synovial ; Seoul ; Sex Ratio ; Survival Rate ; Vincristine

No abstract available.
Anemia* ; Erythropoietin* ; Humans* ; Infant, Newborn ; Infant, Premature*

PURPOSE: The purpose of this study was to examine the effect of maximal sterile barrier precaution on the central venous catheter-related infection and subsequent cost savings. METHODS: Study subjects were 462 hospitalized patients with central venous, catheter of more than 48 hours duration. Data collection period was from April 2008 to February 2009 at a tertiary university hospital in Seoul. Subjects were randomly assigned to either the treatment or the usual care group. Patients in the treatment group (n=209) were treated by staff using maximal sterile barrier precautions and the comparison group(n=253) received traditional care. RESULTS: Central venous catheter-days was2,821 in treatment group and 3,515 in comparison group. The incidence density of central venous catheter-related infection was 2.1 times higher in the comparison group (8.2 per 1,000 catheter-days) compared with the treatment group (3.9 per 1,000 catheter-days). The incidence density of central venous catheter-related bloodstream infection was 4.54 times higher than in the comparison group (3.2 per 1,000 catheter-days) compared with the treatment group (0.7 per 1,000 catheter-days). The attributable cost of central venous catheter-related infection in the treatment group was 10,174,197 won and that of the comparison group was 22,224,554 won. Attributable cost by area was also significantly lower compared with that of the comparisons. CONCLUSION: The maximal sterile barrier precaution during central venous catheter insertion was an effective intervention to reduce central venous catheter-related infection rate and provides a significant cost savings.
Catheter-Related Infections ; Catheters ; Central Venous Catheters ; Cost Savings ; Data Collection ; Humans ; Incidence