1.The Pharmacokinetic Characteristics of Methylprednisolone in Korean Renal Transplant Recipients.
Jong Hoon AHN ; Kyoung Won KAHNG ; Ju Seop KANG ; In Chul SHIN ; Chong Myung KANG ; Jin Young KWAK
Korean Journal of Nephrology 1998;17(5):798-806
Glucocorticoids are usually given according to a standard dosing protocol regardless of individual difference. We evaluated the pharmacokinetic characteristics of methylprednisolone and the degree of interpatient variation in stable Korean renal transplant recipients during the period of 15-21 days after transplantation. This study included 23 renal transplant recipients, 13 males and 10 females, who received kidneys from living donors with stable graft function and without episode of acute rejection. On the study day at 8 A.M., 16.3mg of ethylprednisolone sodium succinate (i.v.) was administered to each patient instead of usual dose (20mg) of prednisolone (p.o.) after sampling of 7cc of baseline blood and additional blood samples were drawn after starting infusion. Plasma was separated and analyzed for methylprednisolone level using high performance liquid chromatography (HPLC) assay, and parameters for pharmacokinetics were calculated. There was significant interpatient variation in the pharmacokinetics of methylprednisolone in our patients group. There was no significant difference in the pharmacokinetic parameters between patients with and without side effects of steroid. Korean renal transplant recipients had higher volume of distribution than black renal transplant recipients; lower clearance than white renal transplant recipients; longer t1/2 than both black and white renal transplant recipients. Even if the number of patients included in this study was too small to reach conclusion, the differences in the pharmacokinetics of glucocorticoids do not seem to be a significant risk factor for side effects of steroid after transplantation. It may be necessary to individualize the dose of a glucocorticoid to achieve an optimal effect and also we need to establish a new steroid regimen protocol for Korean renal transplant recipients.
Chromatography, Liquid
;
Female
;
Glucocorticoids
;
Humans
;
Individuality
;
Kidney
;
Kidney Transplantation
;
Living Donors
;
Male
;
Methylprednisolone*
;
Pharmacokinetics
;
Plasma
;
Prednisolone
;
Risk Factors
;
Sodium
;
Succinic Acid
;
Transplantation*
;
Transplants
2.Comparison of Ultrasound with 99mTc - MIBI Scintimammography in the Detection of Breast Cancer.
Ju Won SEOK ; Seong Jang KIM ; Hi Suk KWAK ; Jun Woo LEE ; In Ju KIM ; Yong Ki KIM ; Young Tae BAE ; Dong Soo KIM
Korean Journal of Nuclear Medicine 2002;36(3):177-184
No abstract available.
Breast Neoplasms*
;
Breast*
;
Ultrasonography*
3.Relationship between the Expression of Sodium Iodide Symporter and the Findings of 99mTc-MIBI Scintimammography in the Primary Breast Cancer.
Ju Won SEOK ; Seong Jang KIM ; Hi Suk KWAK ; Chang Hun LEE ; In Ju KIM ; Yong Ki KIM ; Young Tae BAE ; Dong Soo KIM
Korean Journal of Nuclear Medicine 2002;36(6):325-332
No abstract available.
Breast Neoplasms*
;
Breast*
;
Ion Transport*
;
Sodium Iodide*
;
Sodium*
4.Relationship between the Expression of Sodium Iodide Symporter and the Findings of 99mTc-MIBI Scintimammography in the Primary Breast Cancer.
Ju Won SEOK ; Seong Jang KIM ; Hi Suk KWAK ; Chang Hun LEE ; In Ju KIM ; Yong Ki KIM ; Young Tae BAE ; Dong Soo KIM
Korean Journal of Nuclear Medicine 2002;36(6):325-332
No abstract available.
Breast Neoplasms*
;
Breast*
;
Ion Transport*
;
Sodium Iodide*
;
Sodium*
5.Proinflammatory Effects of High Mobility Group B1 (HMGB1) Versus LPS and the Mechanism of IL-8 Promoter Stimulation by HMGB1.
Eun Ju JEON ; Hee Won KWAK ; Ju Han SONG ; Young Woo LEE ; Jae Woo CHUNG ; Jae Chul CHOI ; Jong Wook SHIN ; In Won PARK ; Byoung Whui CHOI ; Jae Yeol KIM
Tuberculosis and Respiratory Diseases 2007;62(4):299-307
BACKGROUND: High mobility group box 1 (HMGB1) is a novel, late mediator of inflammation. This study compared the pro-inflammatory effects of LPS and HMGB1. The transcriptional factors that play an important role in mediating the HMGB1-induced stimulation of IL-8 were also evaluated. METHODS: RAW264.7 cells were stimulated with either LPS (100 ng/ml) or HMGB1 (500 ng/ml). The TNF-alpha, MIP-2 and IL-1beta levels in the supernatant were evaluated by ELISA at 0, 2, 4, 8, 12 and 24h after stimulation. An acute lung injury was induced by an injection of LPS (5 mg/kg) or HMGB1 (2.5 mg/kg) into the peritoneum of the Balb/c mice. The lung cytokines and MPO activity were measured at 4h (for LPS) or 24h (for HMGB1) after the injection. The transcriptional factor binding sites for NF-IL6, NF-kappaB and AP-1 in the IL-8 promoter region were artificially mutated. Each mutant was ligated with pIL-6luc and transfected into the RAW264.7 cells. One hour after stimulation with HMGB1 (500 ng/ml), the cell lysate was analyzed for the luciferase activity. RESULTS: The expression of MIP-2, which peaked at 8h with LPS stimulation, increased sequentially until 24h after HMGB1 stimulation. An intraperitoneal injection of HMGB1, which induced a minimal increased in IL-1beta expression, provoked the accumulation of neutrophils the lung. A mutation of AP-1 as well as NF-kappaB in the IL-8 promoter region resulted in a lower luciferase activity after HMGB1 stimulation. CONCLUSION: The proinflammatory effects of HMGB1, particularly on IL-8, are mediated by both NF-kappaB and AP-1.
Acute Lung Injury
;
Animals
;
Binding Sites
;
CCAAT-Enhancer-Binding Protein-beta
;
Cytokines
;
Enzyme-Linked Immunosorbent Assay
;
HMGB1 Protein*
;
Inflammation
;
Injections, Intraperitoneal
;
Interleukin-8*
;
Luciferases
;
Lung
;
Mice
;
Negotiating
;
Neutrophils
;
NF-kappa B
;
Peritoneum
;
Promoter Regions, Genetic
;
Transcription Factor AP-1
;
Tumor Necrosis Factor-alpha
6.Granulocyte Macrophage-Colony Stimulating Factor (GM-CSF) Augments Acute Lung Injury via Its Neutrophil Priming Effects.
Jae Chol CHOI ; Jae Woo JUNG ; Hee Won KWAK ; Ju Han SONG ; Eun Ju JEON ; Jong Wook SHIN ; In Won PARK ; Byoung Whui CHOI ; Jae Yeol KIM
Journal of Korean Medical Science 2008;23(2):288-295
Granulocyte macrophage-colony stimulating factor (GM-CSF) has immuno-stimulatory effects. We hypothesized that GM-CSF plays an important role both in lipopolysaccharide (LPS)- and hemorrhage-induced acute lung injury (ALI). We also postulated that GM-CSF augments LPS-induced inflammation by priming neutrophils. ALI was induced in GM-CSF-/- or control C57BL mice either by LPS injection or by hemorrhage. Lung inflammation (by lung expression for tumor necrosis factor-alpha (TNF-alpha), macrophage inflammatory protein-2 (MIP-2), interleukin-1beta (IL-1beta), interleukin- 6 (IL-6), and keratinocyte-derived chemokine) and lung injury (by myeloperoxidase and evans blue dye assay) were evaluated after ALI. Incremental doses of LPS (0, 1, 10, and 100 ng/mL) and GM-CSF (0, 1, 10, and 100 ng/mL) were added to bone marrow neutrophils. The expression of TNF-alpha, MIP-2, and IL-1beta was evaluated with enzyme linked immunosorbent assay. The mRNA expression of three cytokines, and the nuclear translocation of nuclear factor kappa B (NF kappa-B) were evaluated by reverse transcriptase-polymerase chain reaction and electropnoretic mobility shift assay, respectively. GM-CSF -/- mice showed decreased neutrophil infiltration, less leakage, and lower expression of cytokines in the lung after LPS or hemorrhage. GM-CSF augmented LPS-induced protein and mRNA expression of TNF-alpha, MIP-2 and IL-1beta, which was mediated by increased intra-nuclear translocation of NF-kappa B. GM-CSF plays an important role in high-dose LPS and hemorrhage-induced ALI, which appears to be mediated by its priming effect on neutrophils.
Animals
;
Bone Marrow Cells/cytology
;
Chemokine CXCL2/metabolism
;
Granulocyte-Macrophage Colony-Stimulating Factor/metabolism/*physiology
;
Interleukin-1beta/metabolism
;
Lipopolysaccharides/metabolism
;
Lung/metabolism/pathology
;
*Lung Injury
;
Male
;
Mice
;
Mice, Inbred BALB C
;
Mice, Inbred C57BL
;
Mice, Transgenic
;
Neutrophils/*cytology/metabolism
;
Peroxidase/metabolism
;
Tumor Necrosis Factor-alpha/metabolism
7.Unusual bilateral vulvar liposarcoma.
Ju Hyun KWAK ; Sun Mi SHIN ; Jae Won KIM ; Nak Woo LEE
Obstetrics & Gynecology Science 2014;57(6):549-552
Liposarcoma of vulva is a rare malignant tumor. Only fifteen cases of vulvar liposarcoma have been reported in English literature. Because of extreme rarity of vulvar liposarcoma, it is initially misdiagnosed as benign tumor such as lipoma. This paper aims to present a unique case of liposarcoma of bilateral vulvae with a review of the literature of previously reported cases.
Lipoma
;
Liposarcoma*
;
Radiotherapy
;
Vulva
8.A Workplace Cardiovascular Health Promotion Program and its Short-term Health Effects.
Wooseok KWAK ; Jong Uk WON ; Jeongbae RHIE ; Myoung Suk LEE ; Eun Ju KANG ; Jaehoon ROH
Korean Journal of Occupational and Environmental Medicine 2009;21(1):46-52
OBJECTIVES: Cardiovascular disease is the leading cause of death and a major source of workers' compensation claims in Korea. Since 2000 the Korea Occupational Safety and Health Agency (KOSHA), working through local occupational health institutions, has supported cardiovascular disease prevention programs at a number of companies in Korea. The purpose of this study was to assess the short-term effects of this effort. METHODS: A total of 11,077 workers at risk were enrolled in the workplace cardiovascular disease prevention program and 5,902 workers (53.3%) completed the 1-year course during 2007. The program consisted of a medical checkup and health counseling for the workers by occupational health nurses. The guidelines for this prevention program were adopted from KOSHA Code H-11-2004. To determine the program's effectiveness, the workers' risks for cardiovascular disease were assessed before and one year after completion of the program. RESULTS: The intervention led to significant reductions in the mean systolic and diastolic blood pressures of 4.9 mmHg and 3.1 mmHg, respectively. Mean total cholesterol and BMI were also reduced significantly by 8.4 g/dl and 0.1 kg/m2. The rate of smoking was decreased by 6.0% and the percentage of workers engaging in regular exercise was increased by 23.1%. Of the 3,530 workers with the low risk and above, the overall cardiovascular risk was improved in 1,734 (49.1%) of them. CONCLUSIONS: The cardiovascular disease prevention program supported by the Korea Occupational Safety and Health Agency reduces cardiovascular diseases risks among workers and may improve the health status of workers in Korea.
Cardiovascular Diseases
;
Cause of Death
;
Cholesterol
;
Counseling
;
Government Programs
;
Health Promotion
;
Korea
;
Occupational Health
;
Smoke
;
Smoking
;
Workers' Compensation
9.Unusual Metastasis in Renal Cell Carcinoma.
Jae Jin KWAK ; Seong Ho CHO ; Ju Hyung SEO ; Soo IL KIM ; Won Yeol CHO
Korean Journal of Urology 2007;48(5):548-551
Approximately one-third of all patients with renal cell carcinoma have metastasis at the time of diagnosis. Metastatic lesions of renal cell carcinoma are most commonly seen in the lung, and they are frequently seen in the bone and liver. However, spleen and rectal metastases are extremely rare. A 63-year-old man had undergone left radical nephrectomy for renal cell carcinoma. About 22 months later, computed tomography revealed multiple enhanced masses in the spleen. Spleen metastasis was suspected and splenectomy was then performed. One year later, the patient visited with complaints of voiding difficulty. A huge pelvic mass was detected by performing prostate ultrasonography and MRI. The mass was 13cm in diameter and it was between the rectum and the prostate. Removal of the pelvic mass and lower anterior resection with end colostomy was done. Histologically, the resected specimens were diagnosed as metastases from the renal cell cancer. Herein, we report on a case of metachronous splenic and rectal metastasis from renal cell carcinoma.
Carcinoma, Renal Cell*
;
Colostomy
;
Diagnosis
;
Humans
;
Liver
;
Lung
;
Magnetic Resonance Imaging
;
Middle Aged
;
Neoplasm Metastasis*
;
Nephrectomy
;
Prostate
;
Rectum
;
Spleen
;
Splenectomy
;
Ultrasonography
10.Stomach in the Right Thorax Caused by Hiatal Hernia: A Case Report.
Ju Won LEE ; Kyung Hee LEE ; Seung Min KWAK ; Yong Sun JEON ; Soon Gu CHO ; Yoon Jung KIM
Journal of the Korean Radiological Society 2006;55(4):349-352
Intrathoracic stomach due to hiatal hernia is a very rare finding. We report here on such an asymptomatic case, and this malady was diagnosed by chest radiographs and CT.
Hernia, Hiatal*
;
Radiography, Thoracic
;
Stomach*
;
Thorax*