1.Chromosome 22q11 Deletion in Patients with Infundibular Ventricular Septal Defect .
Hae Yul CHUNG ; A Ram PARK ; Byung Ju KIM ; Soon Pal SUH ; Jae Sook MA
Journal of the Korean Pediatric Cardiology Society 2001;5(2):140-148
PURPOSE: This study was undertaken to determine the incidence of chromosome 22q11 deletion in patients with infundibular ventricular septal defect(VSD). METHODS: Sixty-two children with infundibular VSD were included in this study from January 1999 to December 2000. Chromosome 22q11 deletion was confirmed by FISH, using LSI DiGeorge/VCFS region dual color probe(Vysis, USA). RESULTS: Thirty-two patients had conotruncal cardiac defects:tetralogy of Fallot (TOF) in 15; TOF with absent pulmonary valve in 1; VSD with pulmonary atresia in 7; truncus arteriosus in 3; double outlet right ventricle in 2; interrupted aortic arch in 2; transposition of the great arteries in 2. Thirty patients had isolated infundibular VSD without conotruncal cardiac defect:perimembranous infundibular VSD in 15; subarterial infundibular VSD in 9; muscular infundibular VSD in 6. Chromosome 22q11 deletion was observed in 8 patients(male 5, female 3):TOF 2; VSD with pulmonary atresia 4; truncus arteriosus 1; perimembranous infundibular VSD 1. All of the patients with chromosome 21q11 deletion showed typical facial appearance. Low incidence was found of chromosome 22q11 deletion in patients with infundibular VSD without conotruncal cardiac defect than in those with conotruncal cardiac defect(3.3% vs 21.9%). CONCLUSION: These data indicate that a small proportion of isolated infundibular VSD is pathogenetically related to deletion of chromosome region 22q11.
Aorta, Thoracic
;
Arteries
;
Child
;
Double Outlet Right Ventricle
;
Female
;
Heart Septal Defects, Ventricular*
;
Humans
;
Incidence
;
Pulmonary Atresia
;
Pulmonary Valve
;
Truncus Arteriosus
2.A Case of Bilateral Lower Leg Cellulitis Caused by Klebsiella pneumoniae.
Ga Ram AHN ; Hyun Jung KWON ; Kui Young PARK ; Seong Jun SEO
Korean Journal of Dermatology 2019;57(1):40-41
No abstract available.
Cellulitis*
;
Klebsiella pneumoniae*
;
Klebsiella*
;
Leg*
3.Neutrophil to Lymphocyte Ratio and Platelet to Lymphocyte Ratio in Hepatocellular Carcinoma Treated with Stereotactic Body Radiotherapy
The Korean Journal of Gastroenterology 2022;79(6):252-259
Purpose:
To investigate the prognostic value of the neutrophil to lymphocyte ratio (NLR) and platelet to lymphocyte ratio (PLR) in patients with hepatocellular carcinoma (HCC) treated with stereotactic body radiotherapy (SBRT).
Methods:
The medical records of HCC patients treated with SBRT between 2008 and 2019 were reviewed retrospectively. The NLR and PLR were calculated from the serum complete blood count before and after SBRT, and the prognostic values of the NLR and PLR for the treatment outcomes were evaluated.
Results:
Thirty-nine patients with 49 HCC lesions were included. After a median follow-up of 26.8 months (range, 8.4-80.0 months), three-year local control, overall survival (OS), and progression-free survival (PFS) rate were 97.4%, 78.3%, and 35.2%, respectively.Both NLR and PLR increased significantly after SBRT and decreased slowly to the pre-SBRT value at 6 months. Univariable analysis showed that gross tumor volume (GTV) >14 cc, post-SBRT PLR >90, and PLR change >30 were associated with a poorer OS (p=0.002, p=0.011, and p=0.001, respectively), and the PLR change was significant in multivariable analysis (hazard ratio [HR], 10.09; 95% CI, 1.15-88.40; p=0.037). For PFS, GTV >14 cc, post-SBRT NLR >2.5 and post-SBRT PLR >90 were predictive of a poorer PFS in univariable analysis (p=0.011, p=0.004 and p=0.041, respectively) and only post-SBRT NLR >2.5 remained significant in multivariable analysis (HR, 2.44; 95% CI, 1.03-5.76; p=0.042, respectively).
Conclusions
The NLR and PLR increased transiently after SBRT, and the post-SBRT NLR and PLR were associated with the clinical outcomes of HCC patients.
4.Investigating Effects of Nano- to Micro-Ampere Alternating Current Stimulation on Trichophyton rubrum Growth.
Dong Rak KWON ; Hyunjung KWON ; Woo Ram LEE ; Joonsoo PARK
Annals of Dermatology 2016;28(5):575-578
BACKGROUND: Fungi are eukaryotic microorganisms including yeast and molds. Many studies have focused on modifying bacterial growth, but few on fungal growth. Microcurrent electricity may stimulate fungal growth. OBJECTIVE: This study aims to investigate effects of microcurrent electric stimulation on Trichophyton rubrum growth. METHODS: Standard-sized inoculums of T. rubrum derived from a spore suspension were applied to potato dextrose cornmeal agar (PDACC) plates, gently withdrawn with a sterile pipette, and were applied to twelve PDACC plates with a sterile spreader. Twelve Petri dishes were divided into four groups. The given amperage of electric current was 500 nA, 2 µA, and 4 µA in groups A, B, and C, respectively. No electric current was given in group D. RESULTS: In the first 48 hours, colonies only appeared in groups A and B (500 nA and 2 µA exposure). Colonies in group A (500 nA) were denser. Group C (4 µA) plates showed a barely visible film of fungus after 96 hours of incubation. Fungal growth became visible after 144 hours in the control group. CONCLUSION: Lower intensities of electric current caused faster fungal growth within the amperage range used in this study. Based on these results, further studies with a larger sample size, various fungal species, and various intensities of electric stimulation should be conducted.
Agar
;
Electric Stimulation
;
Electricity
;
Fungi
;
Glucose
;
Sample Size
;
Solanum tuberosum
;
Spores
;
Trichophyton*
;
Yeasts
5.Whole grain consumption reduces insulin demand, lipid peroxidation and plasma homocysteine concentrations in patients with coronary artery disease.
Yangsoo JANG ; Jong Ho LEE ; Young Ram UM ; Eun Young CHO ; Hyun Young PARK ; Jae Kwan HWANG ; Ik Hyun YEO
Korean Circulation Journal 2000;30(6):693-701
BACKGROUND: Although current dietary guidelines recommend to increase the consumption of whole grain, these recommendations are mainly derived from the belief that replacing fats with carbohydrate may reduce risk of coronary artery disease (CAD) by improving serum lipids. Our objective was to evaluate whether the isocalorical replacement of refined rice with whole grain reduce CAD risk factors such as insulin demand and lipid peroxidation in CAD patients. METHODS: Thirty-eight male patients with CAD were provided with 70 g powder of whole grain (220 kcal) for 16 weeks, replacing cooked refined rice as a carbohydrate source of breakfast. An oral glucose tolerance test (OGTT) was performed in all subjects to determine the effect of whole grain consumption on serum concentrations of insulin and glucose in CAD patients with different degree of glucose tolerance. RESULTS: With the substitution of whole grain for refined rice, serum glucose concentrations decreased by 24% without altering body weight and energy intake. Estimates of daily fiber and vitamin E intakes increased by 24% and 50%, respectively. Whole grain consumption in CAD patients without diabetes decreased fasting glucose (22%) and the area under the curve (AUC) for insulin (26%) and glucose (19%) during an OGTT. CAD patients with diabetes also showed reductions in fasting glucose (27%) and AUC for glucose (25%) during the OGTT, compared with baseline values. Whole grain consumption reduced plasma malondialdehyde and homocysteine and urinary 8-epi-prostaglandin F 2alpha concentrations by about 30%. Lipid-corrected concentrations of alpha-carotene, retinol, alpha- and gamma-tocopherol and lycopene increased by 22-46%, compared with baseline values. Whole grain consumption decreased the percentage composition of w6 fatty acids of serum phospholipid increased by 14%. CONCLUSION: The replacement of refined rice with whole grain as a carbohydrate source of a meal showed significant beneficial effects on glucose, insulin and homocysteine concentrations and lipid peroxidation in CAD patients. These effects are likely to substantially reduce the risk factors of CAD and diabetes in CAD patients.
Area Under Curve
;
Blood Glucose
;
Body Weight
;
Breakfast
;
Edible Grain*
;
Coronary Artery Disease*
;
Coronary Vessels*
;
Energy Intake
;
Fasting
;
Fats
;
Fatty Acids
;
gamma-Tocopherol
;
Glucose
;
Glucose Tolerance Test
;
Homocysteine*
;
Humans
;
Insulin*
;
Lipid Peroxidation*
;
Male
;
Malondialdehyde
;
Meals
;
Nutrition Policy
;
Plasma*
;
Risk Factors
;
Vitamin A
;
Vitamin E
;
Vitamins
6.Effects of Sinusoidal Electromagnetic Field on Structure and Function of Different Kinds of Cell Lines.
Ah Ram SUL ; Si Nae PARK ; Hwal SUH
Yonsei Medical Journal 2006;47(6):852-861
This study investigated that whether a 2 mT, 60 Hz, sinusoidal electromagnetic field (EMF) alters the structure and function of cells. This research compared the effects of EMF on four kinds of cell lines: hFOB 1.19 (fetal osteoblast), T/G HA-VSMC (aortic vascular smooth muscle cell), RPMI 7666 (B lymphoblast), and HCN-2 (cortical neuronal cell). Over 14 days, cells were exposed to EMF for 1, 3, or 6 hours per day (hrs/d). The results pointed to a cell type-specific reaction to EMF exposure. In addition, the cellular responses were dependent on duration of EMF exposure. In the present study, cell proliferation was the trait most sensitive to EMF. EMF treatment promoted growth of hFOB 1.19 and HCN-2 compared with control cells at 7 and 14 days of incubation. When the exposure time was 3 hrs/d, EMF enhanced the proliferation of RPMI 7666 but inhibited that of T/G HA- VSMC. On the other hand, the effects of EMF on cell cycle distribution, cell differentiation, and actin distribution were unclear. Furthermore, we hardly found any correlation between EMF exposure and gap junctional intercellular communication in hFOB 1.19. This study revealed that EMF might serve as a potential tool for manipulating cell proliferation.
Signal Transduction
;
Microfilaments/radiation effects
;
Humans
;
Gap Junctions/metabolism/radiation effects
;
*Electromagnetic Fields
;
Cell Proliferation/radiation effects
;
Cell Physiology/*radiation effects
;
Cell Line
;
Cell Differentiation/radiation effects
;
Cell Cycle/radiation effects
7.Effects of Sinusoidal Electromagnetic Field on Structure and Function of Different Kinds of Cell Lines.
Ah Ram SUL ; Si Nae PARK ; Hwal SUH
Yonsei Medical Journal 2006;47(6):852-861
This study investigated that whether a 2 mT, 60 Hz, sinusoidal electromagnetic field (EMF) alters the structure and function of cells. This research compared the effects of EMF on four kinds of cell lines: hFOB 1.19 (fetal osteoblast), T/G HA-VSMC (aortic vascular smooth muscle cell), RPMI 7666 (B lymphoblast), and HCN-2 (cortical neuronal cell). Over 14 days, cells were exposed to EMF for 1, 3, or 6 hours per day (hrs/d). The results pointed to a cell type-specific reaction to EMF exposure. In addition, the cellular responses were dependent on duration of EMF exposure. In the present study, cell proliferation was the trait most sensitive to EMF. EMF treatment promoted growth of hFOB 1.19 and HCN-2 compared with control cells at 7 and 14 days of incubation. When the exposure time was 3 hrs/d, EMF enhanced the proliferation of RPMI 7666 but inhibited that of T/G HA- VSMC. On the other hand, the effects of EMF on cell cycle distribution, cell differentiation, and actin distribution were unclear. Furthermore, we hardly found any correlation between EMF exposure and gap junctional intercellular communication in hFOB 1.19. This study revealed that EMF might serve as a potential tool for manipulating cell proliferation.
Signal Transduction
;
Microfilaments/radiation effects
;
Humans
;
Gap Junctions/metabolism/radiation effects
;
*Electromagnetic Fields
;
Cell Proliferation/radiation effects
;
Cell Physiology/*radiation effects
;
Cell Line
;
Cell Differentiation/radiation effects
;
Cell Cycle/radiation effects
8.Cowden Disease Associated with Lhermitte-Duclos Disease: A Case Report.
Bo Ram PARK ; Eui Jong KIM ; Woo Suk CHOI
Journal of the Korean Radiological Society 2006;55(4):327-331
Cowden's disease (CD) is rare multiple hamartoma-neoplasia syndrome. Lhermitte-Duclos disease (LDD) is well known to be a hamartoma of the cerebellum. CD may be accompanied with LDD and other multiple systemic neoplasias. We report here on a case of CD-LDD complex with multiple systemic neoplasia.
Brain
;
Cerebellum
;
Hamartoma
;
Hamartoma Syndrome, Multiple*
9.Radiotherapy in prostate cancer treatment: results of the patterns of care study in Korea.
Radiation Oncology Journal 2017;35(1):25-31
PURPOSE: The purpose of this study was to describe treatment patterns of radiotherapy (RT) for prostate cancer in Korea. MATERIALS AND METHODS: A questionnaire about radiation treatment technique and principles in 2013 was sent to 83 radiation oncologists and data from 57 hospitals were collected analyzed to find patterns of RT for prostate cancer patients in Korea. RESULTS: The number of patients with prostate cancer treated with definitive RT ranged from 1 to 72 per hospital in 2013. RT doses and target volumes increased according to risk groups but the range of radiation doses was wide (60 to 81.4 Gy) and the fraction size was diverse (1.8 to 5 Gy). Intensity-modulated radiation therapy was used for definitive treatment in 93.8% of hospitals. Hormonal therapy was integrated with radiation for intermediate (63.2%) and high risk patients (77.2%). Adjuvant RT after radical prostatectomy was performed in 46 hospitals (80.7%). Indications of adjuvant RT included positive resection margin, seminal vesicle invasion, and capsular invasion. The total dose for adjuvant RT ranged from 50 to 72 Gy in 24–39 fractions. Salvage RT was delivered with findings of consecutive elevations in prostate-specific antigen (PSA), PSA level over 0.2 ng/mL, or clinical recurrence. The total radiation doses ranged from 50 to 80 Gy with a range of 1.8 to 2.5 Gy per fraction for salvage RT. CONCLUSION: This nationwide patterns of care study suggests that variable radiation techniques and a diverse range of dose fractionation schemes are applied for prostate cancer treatment in Korea. Standard guidelines for RT in prostate cancer need to be developed.
Dose Fractionation
;
Humans
;
Korea*
;
Prostate*
;
Prostate-Specific Antigen
;
Prostatectomy
;
Prostatic Neoplasms*
;
Radiotherapy*
;
Recurrence
;
Seminal Vesicles
10.Clinical Implication of BRAF Mutation in Thyroid Cancer.
Korean Journal of Endocrine Surgery 2014;14(3):131-137
The BRAF(V600E) mutation is the most common genetic alteration and presents in 40~80% of all papillary thyroid cancer (PTC), showing the highest prevalence in the Korean population, close to 80%. Previous studies published in the past 10 years showed a significant correlation between BRAF(V600E) mutation and poor prognostic outcomes of PTC, including recurrence and mortality. Therefore, its clinical application for the diagnosis of thyroid nodule or for decisions regarding the management policy by prediction of the prognosis of thyroid cancer has been proposed. However, some recent studies have reported conflict results, and there appear to be growing concerns regard to the cost-benefit of tests for detection of the BRAF(V600E) mutation. In this paper, we reviewed previous studies regarding the BRAF(V600E) mutation and attempted to evaluate the clinical implication of the BRAF(V600E) mutation in clinical practice.
Diagnosis
;
Mortality
;
Prevalence
;
Prognosis
;
Recurrence
;
Thyroid Neoplasms*
;
Thyroid Nodule