Background: Anatomic correction of transposition of the great arteries by means of the arterial switch operation is now accepted as the therapeutic method of choice. This retrospective study attempts to assess the results of the neonatal arterial switch operation for transposition of the great arteries performed by our newly established institution. Materials and methods: 33 consecutive neonates underwent the arterial switch operation between October 1991 to November 1997. There were 27 neonates with transposition and intact ventricular septum, 3 with ventricular septal defect, and 3 with Taussig-Bing anomaly. The mean age was 10.9$\pm$7.9 days and mean body weight was 3.29$\pm$0.44kg. Results: Overall postoperative hospital mortality was 30.3% (10 patients). The mortality has improved with time; 75% (6 patients) among first 8 consecutive patients before 1994, 20% (2 patients) among 10 patients in 1994 and 1995, and 13.3% (2 patients) among 15 patients since 1996. Univariated analysis of risk factors revealed that earlier date of the operations and one of preoperative events were determinants for operative death. There were two late deaths. A mean follow-up of 17.4$\pm$16.5 months was achieved in all 21 survivors. All were in New York Heart Association functional class I. One patient had mild pulmonary stenosis and two had mild aortic valve regurgitation on their echocardiography. Conclusions: We concluded that we should continue to perform arterial switch operation for neonates with transposition of the great arteries because the mortality of the operation has been improved and the operative survivors have good functional results with low incidence of late complications.
The study was designed to observe the effect of blend fat calculated from the foods consumed in Korean with those of perilla oil, beef tallow and corn oil on colonic mucosal phospholipid fatty acid composition and the levels of TXB2 and diacylglycerol (DAG) which were known as biomarkers for cancer. Male Sprague Dawley rats, at 7 weeks of age, were divided into control and 1, 2-dimethylhydrazine (DMH)-treated group, and each group was subdivided into four groups. The experimental diets contained one of four dietary fats, blend fat (BF), perilla oil(PO), beef tallow (BT) or corn oil (CO), at 15% (w/w) level. At the same time, each rat was injected with saline for control group or DMH twice a week for 6 weeks to give total dose of 180mg/kg body weight. DMH injection, regardless of the type of dietary fats, significantly increased the levels of PGE2 and TXB2 in colonic mucosal layer compared to control (p<0.01). However, the level of eicosanoids was influenced by the types of dietary fats in both control and DMH group. In control groups, colonic mucosal level of TXB2 was higher in beef tallow group, but lower in perilla oil group compared to that of blend fat (p<0.01). In DMH groups, the level of TXB2 was higher in beef tallow and corn oil groups(p<0.05). The level of PGE2 showed the same trends with TXB2 and beef tallow most significantly increased the level of PGE2. DMH treatment did not influence on tissue fatty acid profile, which was directly reflected by dietary fatty acid composition. Proportions of C18 : 2 in colonic mucosal phospholipid well reflected dietary level of C18 : 2 showing the order CO>BF>PO>BT. The precentage of arachidonic acid(AA) in mucosal phospholipid was the highest by CO adn BT groups and the lowest by PO group. The incorporation of $\alpha$-linolenic acid in colonic mucosal phospholipid in perilla oil group was negatively correlated to the content of AA. Dietary level of C18 : 2 might not be the only controlling factor for the production of eicosanoids in colonic mucosa layer and might function with $\omega$3 fatty acids. The level of DAG was significanlty lower in PO group than that of BT group. Therefore, $\omega$3 $\alpha$-linolenic acid rich perilla oil could be very important dietary sourec in controlling eicosanoid production DAG level in cloln and recommenced to use more often in meal preparation to reduce the risk factor against colon cancer.
Purpose : The purpose of this study was to determine those factors which could contribute to the development of necrotizing enterocolitis(NEC) in fullterm. Methods : We retrospectively reviewed the medical record of 20 full-terms with NEC(${\geq}$modified Bell's staging criteria IIa) who were admitted to the Neonatal Intensive Care Unit of Il Sin Christian hospital from January 1998 through July 2005, and for each case, the next 2 healthy newborns were matched as controls. Results : Mean gestational age and birth weight in the fullterm with NEC group was 38.42 weeks and 2,915 g; in the healthy fullterm without NEC group, it was 38.61 weeks and 3,148 g. When compared with the control group, NEC infants had a significantly higher frequency of chorioamnionitis, protracted diarrhea. As for Apgar score at 1 min <7, respiratory problem, congenital heart disease. there were no differences in frequency of preeclampsia, maternal diabetes, maternal drug abuse, meconium-stained amniotic fluid, polycythemia or exchange transfusion. Conclusion : Most of these full term infants have a predisposing factor before developing NEC. Our study suggested that NEC in fullterm infants was significantly associated with protracted diarrhea, and congenital heart disease.
Jeong, Jong Hwi;Yeom, Yoen Soo;Han, Min Cheol;Kim, Chan Hyeong;Ham, Bo Kyoung;Hwang, Sung Bae;Kim, Seong Hoon;Lee, Dong-Myung
Progress in Medical Physics
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제23권3호
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pp.199-208
/
2012
The computational human phantom including major radiation sensitive organs at risk (OARs) can be used in the field of radiotherapy, such as the variation of secondary cancer risks caused by the radiation therapy and the effective dose evaluation in diagnostic radiology. The present study developed a Korean adult female voxel phantom, VKH-Woman, based on serially sectioned color slice images of Korean female cadaver. The height and weight of the developed female voxel phantom are 160 cm and 52.72 kg, respectively that are virtually close to those of reference Korean female (161 cm and 54 kg). The female phantom consists of a total of 39 organs, including 27 organs recommended in the ICRP 103 publication for the effective dose calculations. The female phantom composes of $261{\times}109{\times}825$ voxels (=23,470,425 voxels) and the voxel resolution is $1.976{\times}1.976{\times}2.0619mm^3$ in the x, y, and z directions. The VHK-Woman is provided as both ASCII and Binary data formats to be conveniently implemented in Monte Carlo codes.
Choi Sang Soon;Uem Ju O;Kim Song Baek;Yoo Sim Keun
Journal of Physiology & Pathology in Korean Medicine
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제16권4호
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pp.788-800
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2002
Aging is characterized by an age-dependent reduction in bone density. Pronounced bone loss by postmenopausal estrogen deficiency induces a bad effect on dynamic balance of bone metabolism. When the bone density is reduced to the level below the fracture threshold, the risk for fracture is greatly increased. The purpose of this study is to examine what are the effects of the Yuklinzu(YLZ: 毓麟珠) on the ovariectomized rat model of postmenopausal osteoporosis. The results of the experiment are as follows: Body weight in control group showed significant increase in comparison with sham, but that in YLZ-treated showed no change in comparison with control. The level of serum albumin in control group showed significant decrease in comparison with sham. That in YLZ-treated was slightly decreased in comparison with control. The level of serum ALP activity in control group showed significant increase in comparison with sham, but that in YLZ-treated was significantly decreased in comparison with control. The level of serum phosphorous in control group showed significant increase in comparison with sham, but that in YLZ-treated showed no change in comparison with control. The level of serum calcium in control group showed no change in comparison with sham, but that in YLZ-treated was significantly decreased in comparison with control. The level of serum GOT in control group showed no change in comparison with sham, but that in YLZ-treated was significantly decreased in comparison with control. The level of serum GPT did not significant change among the three groups. The level of serum estrogen in control group showed slightly increased in comparison with sham, but that in YLZ-treated showed no change in comparison with control. The level of serum T3 in control group showed no change in comparison with sham, and that in YLZ-treated showed no change in comparison with control. The level of serum T4 in control group showed significant increase in comparison with sham, but that in YLZ-treated was significantly decreased in comparison with control. Mechanical strength of the femur neck in control group showed significant decrease in comparison with sham. That in YLZ-treated showed slightly increased in comparison with control. Trabecular bone area as well as trabecular thickness in control group showed significant decrease in comparison with sham. Those in YLZ-treated showed significant increase in comparison with control. Trabecular number and did not significant change among the three groups. Trabecular separation only in YLZ-treated showed significant decrease in comparison with control. Osteoclast number and oseoblast surface in control group showed significant increase in comparison with sham. Those in YLZ-treated showed slightly decreased in comparison with control. According to the above these results, YLZ has shown to be capable of preventing and curing osteoporosis caused by old-aged and postmenopause.
Background: Surgical closure of the PDA in premature infants with complications or contraindications to indomethacin use, or recurrence of symptomatic PDA is a safe and effective procedure with low operative risk and minimal complications. Material and Method: From April 1996 to August 1998, 11 premature infants with body weight under 1.5 kg at operation underwent operation for a symptomatic PDA (male:5, female: 6). Associated dise ases were congenital heart disease(7), hyaline membrane disease(6), intraventricular hemor rhage(4), pneumonia(4), pneumothorax(3), hyperbilirubinemia(2), necrotizing enterocolitis(2), renal failure(1), epilepsy(1), and hydrocephalus(1). Surgical techniques are hemoclipping(8) and ligation(3). The size of PDA was 3~6 mm (5.0$\pm$1.2). Result: Systolic and diastolic blood pressure rised and heart rates decreased after PDA closure. ABGA improved postoperatively. There were no surgical complications. Six infants with improved ABGA data were weaned from mechanical ventilatory support. The follow-up durations after discharge were 3 month to 12 month. Five deaths were not related to operation. The causes of death were hyaline membrane disease(2), bronchopulmonary dysplasia with pneumonia(1), sepsis(1), and con gestive heart failure with respiratory distress syndrome(1). Conclusion: Early operative closure is the treatment of choice in most premature infants with a hemodynamically significant shunt(PDA), recurrence of symptomatic PDA, complications of Indomethacin, or contraindi cations to Indomethacin.
In order to set ADIs for pesticides registered for use in Korea, an analysis of guidelines on setting ADIs and ADIs established by international bodies and advanced countries was conducted General guidelines on the derivation ADIs are very similar among regulatory authorities. However, there were large differences in the ADIs' setting status and ADI values set for some individual pesticides. ADIs were established for 213 pesticides in UN, 332 in USA, 230 in Japan, 219 in UK and 435 in EU and Australia. Of the established ADIs in other countries, 87 to 252 pesticides were the pesticides registered in Korea depending countries. The number of lowest ADIs depending countries was 32 in USA, 23 in Japan, 6 in EU and Australia. The key target organs and endpoints used for setting ADIs were in the order of enzyme inhibition, body weight change and adverse effect on liver. The number of ADIs used for setting MRLs in Korea was high in the order of JMPR, Japan and USA. ADIs of EU and JMPR had highest similarity among bodies investigated. By referring to the guidances investigated at this study, guideline for setting ADI and ADIs for 64 pesticides registered in Korea were proposed.
Purpose: To assess the validity of individual and combined prognostic effects of severe bronchopulmonary dysplasia (BPD), brain injury, retinopathy of prematurity (ROP), and parenteral nutrition associated cholestasis(PNAC). Methods: We retrospectively analyzed the medical records of 80 extremely low birthweight (ELBW) infants admitted to the neonatal intensive care unit (NICU) of the Severance Children's Hospital, and who survived to a postmenstrual age of 36 weeks. We analyzed the relationship between 4 neonatal morbidities (severe BPD, severe brain injury, severe ROP, and severe PNAC) and poor outcome. Poor outcome indicated death after a postmenstrual age of 36 weeks or survival with neurosensory impairment (cerebral palsy, delayed development, hearing loss, or blindness) between 18 and 24 months of corrected age. Results: Each neonatal morbidity correlated with poor outcome on univariate analysis. Multiple logistic regression analysis revealed that the odds ratios (OR) were 4.9 (95% confidence interval [CI], 1.0-22.6; $P$=0.044) for severe BPD, 13.2 (3.0-57.3; $P$<.001) for severe brain injury, 5.3 (1.6-18.1; $P$=0.007) for severe ROP, and 3.4 (0.5-22.7; $P$=0.215) for severe PNAC. Severe BPD, brain injury, and ROP were significantly correlated with poor outcome, but not severe PNAC. By increasing the morbidity count, the rate of poor outcome was significantly increased (OR 5.2; 95% CI, 2.2-11.9; $P$<.001). In infants free of the above-mentioned morbidities, the rate of poor outcome was 9%, while the corresponding rates in infants with 1, 2, and more than 3 neonatal morbidities were 46%, 69%, and 100%, respectively. Conclusion: In ELBW infants 3 common neonatal mornidifies, severe BPD, brain injury and ROP, strongly predicts the risk of poor outcome.
Shin, Youn Ho;Kim, Ki Eun;Lee, Yong-Jae;Nam, Jae-Hwan;Hong, Young Mi;Shin, Hye-Jung
Clinical and Experimental Pediatrics
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제57권12호
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pp.526-532
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2014
Purpose: Matrix metalloproteinases (MMPs) have been implicated in atherosclerosis, and therefore, are considered risk factors for metabolic dysfunction in adults. However, there is little data on circulating levels of MMPs and tissue inhibitors of MMPs (TIMPs) with regard to obesity-related biomarkers in the general adolescent population. In the present study, we determined the associations of MMP-8, MMP-9, and TIMP-1 levels and MMP-8/TIMP-1 and MMP-9/TIMP-1 ratios with obesity-related biomarkers in apparently healthy adolescent boys. Methods: We measured MMP and TIMP concentrations in plasma samples using the enzyme-linked immunosorbent assay and analyzed their associations with obesity-related biomarkers, such as liver enzymes and lipid profiles, in a sample of 91 Korean boys aged 13-14 years who participated in a general health check-up. Results: The mean age of the boys was $13.8{\pm}0.3years$; 72 boys were normal weight and 19 were overweight/obese. The Pearson correlation coefficients revealed a significant correlation between MMP-8 and aspartate aminotransferase (r=0.217, P=0.039) and alanine aminotransferase (r=0.250, P=0.017) and between TIMP-1 and aspartate aminotransferase (r=0.267, P=0.011). In a multivariate linear regression analysis, serum alanine aminotransferase was positively associated with the MMP-8 level. There were no significant differences in the MMP-8, MMP-9, and TIMP-1 levels or MMP-8/TIMP-1 and MMP-9/TIMP-1 ratios between control and overweight/obese subjects. Conclusion: We found a significant association between the MMP-8 level and alanine aminotransferase in the apparently healthy adolescent boys. These findings indicate that there may be a pathophysiological mechanism underlying the relationship between MMP-8 and liver enzymes in young adolescents.
Objectives: This survey was designed to conduct the first nationwide dietary exposure assessment on hazardous substances including the intakes of functional food and herbal medicine. In this paper, we introduced the survey design and the results of the dietary exposure status and internal exposure levels of lead (Pb), cadmium (Cd), and mercury (Hg). Methods: We selected 4867 subjects of all ages throughout Korea. We conducted a food survey, dietary survey, biomonitoring, and health survey. Results: Pb and Cd were the highest (median value) in the seaweed ($94.2{\mu}g/kg$ for Pb; $594{\mu}g/kg$ for Cd), and Hg was the highest in the fish ($46.4{\mu}g/kg$). The dietary exposure level (median value) of Pb was $0.14{\mu}g/kg$ body weight (bw)/d, $0.18{\mu}g/kg$ bw/d for Cd, and $0.07{\mu}g/kg$ bw/d for Hg. Those with a blood Pb level of less than $5.00{\mu}g/dL$ (US Centers for Disease Control and Prevention, reference value for those 1 to 5 years of age) were 99.0% of all the subjects. Those with a blood Cd level with less than $0.30{\mu}g/L$ (German Federal Environmental Agency, reference value for non-smoking children) were 24.5%. For those with a blood Hg level with less than $5.00{\mu}g/L$ (human biomonitoring I, references value for children and adults, German Federal Environmental Agency) was 81.0 % of all the subjects. Conclusions: The main dietary exposure of heavy metals occurs through food consumed in a large quantity and high frequency. The blood Hg level and dietary exposure level of Hg were both higher than those in the European Union.
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