1.Concurrent Intracranial and Extracranial Arterial Aneurysms: Report of Three Cases.
Seung Ryeol SHIN ; Tae Sun KIM ; Jung Kil LEE ; Je Hyuk LEE
Journal of Korean Neurosurgical Society 2005;37(3):223-227
Systemic multiple aneurysms are rare, and an association between intracranial and visceral arterial or abdominal aortic aneurysm in the same patient is a very rare occurrence. We report herein three such cases. In one case, aneurysms of the right internal carotid artery(ICA) and the right middle cerevral arterial bifurcation(MCAB) coexisted with the inferior pancreaticoduodenal arterial pseudoaneurysm and two ileal arterial aneurysms. In another case, the patient had the A-com arterial aneurysm and the right renal arterial aneurysm. And in the other patient, he had the right vertebral artery dissecting aneurysm with the abdominal aortic aneurym. Initially, all patients were referred to our hospital with subarachnoid hemorrhage(SAH), and thereafter first two patients developed visceral arterial aneurysm rupture in the course of hospital stay and in the last patient, the abdominal aortic aneurysm was detected incidentally during carotid angiogram for Guglielmi detachable coil(GDC) embolization of vertebral dissecting aneurym. After thorough review of our cases together with pertinent literatures, we emphasize the possibility of underlying extracranial aneurysms in ruptured intracranial arterial aneurysm patient and it's uncommon but fatal complication.
Aneurysm*
;
Aneurysm, Dissecting
;
Aneurysm, False
;
Aortic Aneurysm, Abdominal
;
Humans
;
Length of Stay
;
Rupture
;
Vertebral Artery
2.Ultrasound-guided Evacuation of Spontaneous Intracerebral Hemorrhage in Basal Ganglia.
Seong Keun PARK ; Jung Kil LEE ; Seung Ryeol SHIN ; Je Hyuk LEE
Journal of Korean Neurosurgical Society 2005;37(3):197-200
OBJECTIVE: Ultrasound can be used in the treatment of large intracerebral hematoma. The authors present our experiences with Ultrasound-guided catheter placement for lysis and drainage of ganglionic hematoma, with emphasis on technical aspects. METHODS: The authors applied real-time ultrasonography for the aspiration of intracerebral hematoma in 6cases. Ultrasound-guided aspiration via a burrhole was performed under local anesthesia. We selected a temporal entry point instead of the frequently used precoronal approach in ganglionic hematoma. A burrhole was made 4 to 6cm posterior from posterior border of frontal process of the zygomatic bone at the level of 4 to 5cm above the external auditory meatus. RESULTS: In all patients, the catheter was placed accurately into the hematoma target. All patients were irrigated with urokinase once to three times a day. The catheter could be removed within two or three days. The mean hematoma volume was reduced from initially 32mL to 5mL in an average of two days. There were no intraoperative complications related to the use of real-time ultrasonography and no postoperative infections were noted. CONCLUSION: Ultrasound allows an easy and precise localization of the hematoma and the distance from the surface to the target can be calculated. Ultrasound-guided catheter placement for fibrinolysis and hematoma drainage is a simple and safe procedure.
Anesthesia, Local
;
Basal Ganglia*
;
Catheters
;
Cerebral Hemorrhage*
;
Drainage
;
Fibrinolysis
;
Ganglion Cysts
;
Hematoma
;
Humans
;
Intraoperative Complications
;
Thrombolytic Therapy
;
Ultrasonography
;
Urokinase-Type Plasminogen Activator
3.Effect of aldosterone on epithelial-to-mesenchymal transition of human peritoneal mesothelial cells.
Mina YU ; Hyun Soo SHIN ; Hyeon Kook LEE ; Dong Ryeol RYU ; Seung Jung KIM ; Kyu Bok CHOI ; Duk Hee KANG
Kidney Research and Clinical Practice 2015;34(2):83-92
BACKGROUND: Peritoneal fibrosis is one of the major causes of technical failure in patients on peritoneal dialysis. Epithelial-to-mesenchymal transition (EMT) of the peritoneum is an early and reversible mechanism of peritoneal fibrosis. Human peritoneal mesothelial cells (HPMCs) have their own renin-angiotensin-aldosterone system (RAAS), however, it has not been investigated whether aldosterone, an end-product of the RAAS, induces EMT in HPMCs, and which mechanisms are responsible for aldosterone-induced EMT. METHODS: EMT of HPMCs was evaluated by comparing the expression of epithelial cell marker, E-cadherin, and mesenchymal cell marker, alpha-smooth muscle actin after stimulation with aldosterone (1-100nM) or spironolactone. Activation of extracellular signal-regulated kinase (ERK)1/2 and p38 mitogen-activated protein kinase (MAPK) and generation of reactive oxygen species (ROS) were assessed by western blotting and 2',7'-dichlorofluororescein diacetate staining, respectively. The effects of MAPK inhibitors or antioxidants (N-acetyl cysteine, apocynin, and rotenone) on aldosterone-induced EMT were evaluated. RESULTS: Aldosterone induced EMT in cultured HPMCs, and spironolactone blocked aldosterone-induced EMT. Aldosterone induced activation of both ERK1/2 and p38 MAPK from 1 hour. Either PD98059, an inhibitor of ERK1/2, or SB20358, an inhibitor of p38 MAPK, attenuated aldosterone-induced EMT. Aldosterone induced ROS in HPMCs from 5 minutes, and antioxidant treatment ameliorated aldosterone-induced EMT. N-acetyl cysteine and apocynin alleviated activation of ERK and p38 MAPK. CONCLUSION: Aldosterone induced EMT in HPMCs by acting through the mineralocorticoid receptor. Aldosterone-induced generation of ROS followed by activation of ERK, and p38 MAPK served as one of the mechanisms of aldosterone-induced EMT of HPMCs.
Actins
;
Aldosterone*
;
Antioxidants
;
Blotting, Western
;
Cadherins
;
Cysteine
;
Epithelial Cells
;
Humans
;
p38 Mitogen-Activated Protein Kinases
;
Peritoneal Dialysis
;
Peritoneal Fibrosis
;
Peritoneum
;
Phosphotransferases
;
Protein Kinases
;
Reactive Oxygen Species
;
Receptors, Mineralocorticoid
;
Renin-Angiotensin System
;
Spironolactone
4.Clip Reinforcement Technique by Circumferential Wrapping with Silastic Sheet for Treatment of Cerebral Aneurysms and Its Follow-Up Outcome.
Seung Ryeol SHIN ; Tae Sun KIM ; Je Hyuk LEE ; Sung Pil JOO ; In Young KIM ; Shin JUNG ; Jung Kil LEE ; Jae Hyoo KIM ; Soo Han KIM ; Sam Suk KANG
Korean Journal of Cerebrovascular Surgery 2004;6(1):38-44
OBJECTIVE: To describe the clip reinforcement technique by circumferential wrapping with silastic sheet for the treatment of unclippable cerebral aneurysms and evaluate its long term follow-up results. METHODS: The nature of 26 unclippable aneurysms were as follow:12 blister-like superior wall aneurysm of internal carotid artery (ICA), 6 microaneurysms (<2 mm), 4 fusiform aneurysms, 4 broad-based aneurysms. After aneurysm and the parent artery are circumferentially wrapped by silastic sheet, aneurysm clips are positioned on the sheet with parallel to the parent artery. The mean follow-up period was 37 months (range, 3-140 months). RESULTS: 25 of 26 patients had a favorable outcome and one patient had a severe disabled due to severe vasospasm at 3 months after operation. Of the 21 patients who underwent immediate angiographic examination, stenosis of parent artery was detected in 6 patients and remnant of aneurysm in 4 patients. Asymptomatic occlusion of parent artery was observed in one patient on follow-up angiographic examination. 22 of 24 patients followed-up for a long time had a favorable outcome and 2 patients had a severe disabled (one patient was due to previous severe disabled and the other was due to thalamic intracerebral hematoma developed during the follow-up period). CONCLUSION: In our study, there was no clip reinforcement technique-related clinical complications such as rebleeding of aneurysm or ischemic event during follow-up period. Clip reinforcement technique by circumferential wrapping with silastic sheet is simple and useful method for the unclippable cerebral aneurysm.
Aneurysm
;
Arteries
;
Carotid Artery, Internal
;
Constriction, Pathologic
;
Follow-Up Studies*
;
Hematoma
;
Humans
;
Intracranial Aneurysm*
;
Parents
5.A Case of Male Pseudohermaphroditism due to 17alpha-Hydroxylase Deficiency.
Keoung Ah PARK ; Youn Kyung CHUNG ; Jung Ryeol LEE ; Young Min CHOI ; Gyoung Hoon LEE ; Hee Seung KIM ; Byung Chul JEE ; Seung Yup KU ; Chang Suk SUH ; Seok Hyun KIM ; Jung Gu KIM ; Shin Yong MOON ; Seong Yeon KIM
Korean Journal of Fertility and Sterility 2006;33(2):133-138
Female phenotype of a 46,XY male may originates from male pseudohermaphroditism due to 17alpha-hydroxylase deficiency. Lack of cortisol increases adrenocorticotropic hormone (ACTH) and mineralocorticoid production, leading to low renin hypertention and hypokalemia. A 41-year-old phenotypic female presented primary amenorrhea and hypertension. In the hormonal profile, the levels of serum estradiol, testosterone, rennin, and cortisol were decreased and ACTH and deoxycorticosterone were increased. Laparoscopic bilateral gonadectomy was performed, and corticosteroid, antihypertensive drugs, and estrogen were administered. We report this case with a brief review of the literatures.
46, XY Disorders of Sex Development*
;
Adrenal Hyperplasia, Congenital
;
Adrenocorticotropic Hormone
;
Adult
;
Amenorrhea
;
Antihypertensive Agents
;
Chymosin
;
Desoxycorticosterone
;
Estradiol
;
Estrogens
;
Female
;
Humans
;
Hydrocortisone
;
Hypertension
;
Hypokalemia
;
Male*
;
Phenotype
;
Renin
;
Testosterone
6.Effects of Age on in vitro Maturation and Fertilization of Immature Oocytes from Stimulated Cycles in Human IVF-ET Program.
Sang Hoon HAN ; Jung Ryeol LEE ; Hyun Jun KIM ; Jung Hee MOON ; Byung Chul JEE ; Seung Yup KU ; Chang Suk SUH ; Seok Hyun KIM ; Young Min CHOI ; Jung Gu KIM ; Shin Yong MOON
Korean Journal of Fertility and Sterility 2005;32(4):331-336
OBJECTIVE: To investigate the effects of female age on in vitro maturation and fertilization of immature oocytes from controlled ovarian hyperstimulation (COH) in human IVF-ET program. METHOD: A total of 96 immature oocytes (GV & metaphase I) obtained from 40 cycles of IVF-ET (29 patients). The mean age of female patients was 31.8+/-3.1 years. Ovulation was triggered by urinary or recombinant hCG. Immature oocytes were cultured with YS medium containing 30% of patients' human follicular fluids, LH (1 IU/mL), FSH (1 IU/mL) and EGF (10 ng/mL), and then matured oocytes were fertilized by ICSI. In vitro maturation and fertilization of immature oocytes were analyzed according to age of female (< 34 or > or = 34 years). RESULTS: The maturation rate was similar between two groups (68% vs 64%). The fertilization rate of in?vitro-matured oocytes was higher in patients < 34 years old, but there was no statistical significance (64% vs 50%, p=0.347). The fertilization rate of in-vitro-matured oocytes was significantly lower compared with those of in-vivo-matured oocytes in both age groups (64% vs 79%, p=0.035, 50% vs 86%, p=0.007). CONCLUSION: In older female group, fertilization rate of in-vitro-matured oocytes seems to be decreased. Further investigations should be warranted to increase fertilization potential of in-vitro-matured oocytes.
Adult
;
Epidermal Growth Factor
;
Female
;
Fertilization*
;
Follicular Fluid
;
Humans*
;
Metaphase
;
Oocytes*
;
Ovulation
;
Sperm Injections, Intracytoplasmic
7.Factors associated with Endothelial Dysfunction in Hemodialysis Patients.
Jung Hwa RYU ; Mina YU ; Dong Ryeol RYU ; Seung Jung KIM ; Kyu Bok CHOI ; Kyun Il YOON ; Duk Hee KANG ; Wook Bum PYUN ; Gil Ja SHIN
Korean Journal of Nephrology 2008;27(2):195-204
PURPOSE: Endothelial dysfunction is an event in the atherosclerotic process usually considered reversible at its early stage. Early detection, therefor, may improve the prognosis in the cardiovascular disease. The aim of this study was to investigate the vascular function in hemodialysis (HD) patients and to explore its relation to other various parameters with a specific emphasis on systemic inflammatory reaction (SIR), nutritional status and the presence of ischemic heart disease (IHD). METHODS: Flow-mediated endothelium-dependent vasodilatation (FMD) was measured, using Doppler sonogram, in 37 stable HD patients, 11 healthy people and 24 hypertensive controls. Nitroglycerine- induced endothelium-independent vasodilatation (EIV) and peak reaction time (PT) of each FMD and EIV were also measured. RESULTS: FMD in HD patients was decreased compared to healthy group whereas it was comparable in HD patients and hypertensive control. EIV in HD patients was significantly decreased compared to healthy and hypertensive controls. PT of each FMD and EIV was significantly delayed in HD patients. Each FMD and EIV showed a negative correlation with serum hsCRP level, but no significant correlations of FMD with other parameters were noted. Both FMD and EIV were further decreased in HD patients with IHD than non-IHD group. CONCLUSION: Our study confirmed a characteristic pattern of vascular dysfunction in HD patients: the impaired endothelial and smooth muscle function with a delayed reaction time. Importantly, SIR was one of the important factors determining vascular dysfunction in HD patients. Further studies will be necessary to define the causative role of SIR on endothelial dysfunction and the effect of inflammation- modulating therapy.
C-Reactive Protein
;
Cardiovascular Diseases
;
Humans
;
Inflammation
;
Muscle, Smooth
;
Myocardial Ischemia
;
Nutritional Status
;
Prognosis
;
Reaction Time
;
Renal Dialysis
;
Vasodilation
8.Risk of Stroke in Elderly Dialysis Patients.
Seung Seok HAN ; Dong Ryeol RYU ; Kwon Wook JOO ; Chun Soo LIM ; Yong Lim KIM ; Shin Wook KANG ; Yon Su KIM ; Dong Ki KIM
Journal of Korean Medical Science 2017;32(9):1460-1467
Despite the current knowledge about the risk of stroke and its related factors in general population, this issue in elderly patients receiving dialysis remains unresolved. Firstly, to compare the risk of stroke between hemodialysis (HD) and peritoneal dialysis (PD), data on 13,065 incident dialysis patients (aged ≥ 65 years; 10,675 in HD and 2,390 in PD) were retrieved from the Korean Health Insurance dataset. Secondly, to identify the risk factors of stroke amongst various clinical and laboratory parameters in HD, 980 elderly patients were retrospectively analyzed using an independent prospective cohort from 31 dialysis centers. For a mean duration of 1.8 years (maximum of 5 years), the risk of all cardiovascular diseases (ischemic heart disease and stroke) did not differ between HD and PD. However, when analyses were conducted separately by subtype, the risk of stroke, not ischemic heart disease, was significantly higher in HD patients than in PD patients. When the risk factors of stroke were probed after HD for a mean duration of 2.6 years (maximum of 7 years), the absolute dependence on social support, a previous history of cardiovascular disease, high levels of low-density lipoprotein cholesterol, and the use of a high number of anti-hypertensive drugs were identified as being significant. Based on the discrepancy of stroke risk between modalities and the HD-tailored risk factors of stroke, the monitoring and management of these factors may be a key strategy to reduce the risk of stroke in elderly patients receiving dialysis.
Aged*
;
Antihypertensive Agents
;
Cardiovascular Diseases
;
Cholesterol
;
Cohort Studies
;
Dataset
;
Dialysis*
;
Heart Diseases
;
Humans
;
Insurance, Health
;
Kidney Failure, Chronic
;
Lipoproteins
;
Myocardial Ischemia
;
Peritoneal Dialysis
;
Prospective Studies
;
Renal Dialysis
;
Retrospective Studies
;
Risk Factors
;
Stroke*
9.Characteristics of Myocardial Deformation and Rotation in Subjects With Diastolic Dysfunction Without Diastolic Heart Failure.
Hee Sang JANG ; Jae Hoon KIM ; Byung Seok BAE ; Seung Min SHIN ; Ki Ju KIM ; Jung Gil PARK ; Hyun Jae KANG ; Bong Ryeol LEE ; Byung Chun JUNG
Korean Circulation Journal 2009;39(12):532-537
BACKGROUND AND OBJECTIVES: There have been very few pathophysiologic studies on isolated diastolic dysfunction. We hypothesized that the characteristics of isolated diastolic dysfunction would be located, on the clinical continuum, between those of a normal heart and diastolic heart failure. SUBJECTS AND METHODS: We enrolled 102 subjects who had no history of overt symptoms of heart failure and who had a left ventricular ejection fraction of more than 50%. They were examined for myocardial deformation and rotation using the two-dimensional speckle tracking image (2D-STI) technique. RESULTS: The circumferential strains and radial strain at the apical level (RS(apex)) were related to the ratio of the transmitral early peak velocity over the early diastolic mitral annulus velocity (E/E'). After adjustment for age, the RS(apex) showed a positive relationship with the E/E' ratio; whereas, the circumferential strains did not. Instead, the circumferential strains demonstrated a significant correlation with age. Basal rotation and left ventricular (LV) torsion were also related to age, but had no relationship with the E/E' ratio. However, as the E/E' ratio value increased, systolic mitral annular velocity decreased. CONCLUSION: Except for the RS(apex), LV myocardial deformation and rotation did not vary with the degree of E/E' ratio elevation when there was no associated diastolic heart failure. Additionally, in clinical situations such as isolated diastolic dysfunction, the advancement of age has a relatively greater influence on characteristics of LV myocardial deformation and rotation rather than on the E/E' ratio.
Echocardiography, Doppler
;
Heart
;
Heart Failure
;
Heart Failure, Diastolic
;
Sprains and Strains
;
Stroke Volume
;
Track and Field
10.Regional Differences in Preterm Birth Rates: Based on 2003 Birth Certificate Data.
Sang Hwa PARK ; Jung Ryeol LEE ; Young Sik CHOI ; Seung Yup KU ; Shin Yong MOON ; Seok Hyun KIM
Korean Journal of Perinatology 2006;17(2):173-180
OBJECTIVE: Preterm birth is one of the leading causes of infant death and a major contributor to early childhood morbidity. It has been recognized that numerous factors are responsible for the development of preterm delivery. Among these factors, environmental influences have been demonstrated in many studies. The purpose of this study was to analyze the regional variations of preterm birth rates and to reveal the association between environmental influences and preterm birth. METHODS: Based on the 2003 birth certificate data from National Statistical Office, we analyzed 475,680 singleton births with certain gestational age at delivery of seven metropolitan cities and nine provinces in Korea. Multiple logistic regression analysis was used to examine the relationship between preterm birth and regional differences, adjusting for other risk factors such as maternal age, sex of infants, order of the babies and mother's education. RESULTS: The rate of preterm delivery was 3.8 percent. The highest preterm birth rate was observed in Daegu metropolitan city (4.2%), and the lowest in Jeonbuk province (3.2%). Risk of preterm birth was higher in mothers with younger (<20 years) and older (> or =30 years) ages, with lower educational levels, and in male infants. There was a significant increase in the risk of preterm birth in Daegu metropolitan city (odds ratio (OR) 1.32, 95% confidence interval (CI), 1.19~1.47), Gangwon province (OR 1.27, 95% CI, 1.13~1.43), Gyeongbuk province (OR 1.26, 95% CI, 1.14~1.40), Jeonnam province (OR 1.22, 95% CI, 1.09~1.37), Busan metropolitan city (OR 1.21, 95% CI, 1.09~1.34), Ulsan metropolitan city (OR 1.19, 95% CI, 1.05~1.36), and Gyeonggi province (OR 1.15, 95% CI, 1.05~1.26) as compared with the incidence of preterm birth in Jeonbuk province. CONCLUSION: Regional variations of preterm birth rate was observed among metropolitan cities and provinces in Korea. Further larger scale studies are necessary to determine more specific factors associated with these differences.
Birth Certificates*
;
Busan
;
Daegu
;
Education
;
Gangwon-do
;
Gestational Age
;
Gyeonggi-do
;
Gyeongsangbuk-do
;
Humans
;
Incidence
;
Infant
;
Jeollabuk-do
;
Jeollanam-do
;
Korea
;
Logistic Models
;
Male
;
Maternal Age
;
Mothers
;
Parturition*
;
Premature Birth*
;
Risk Factors
;
Ulsan