1.Impacted duodenal phytobezoar and acute pancreatitis: a case report.
Journal of the Korean Radiological Society 1991;27(4):552-554
No abstract available.
Pancreatitis*
2.Three cases of cholesterol granuloma presenting as intratympanic mass.
Seong Won YOON ; Hyuck Soo LEE ; Tae Hyun YOON ; Kwang Chol CHU
Korean Journal of Otolaryngology - Head and Neck Surgery 1993;36(3):535-540
No abstract available.
Cholesterol*
;
Granuloma*
3.Lateral cervical puncture for cervical myelography
Hae Young SEOL ; Sang Hoon CHA ; Yoon Hwan KIM ; Won Hyuck SUH
Journal of the Korean Radiological Society 1985;21(6):917-922
Eleven cervical myelograms were perfomed by lateral cervical puncture using Metrizamide. So, following resultswere obtained: 1. Site of lateral cervial puncture; Posterior one third of bony cervical canal at C 1-2 level. 2.Advantages as compared with lumbar puncture for cervial myelogram; 1) Small amount of contrast media 2) Excellentimage 3) Less position change 4) Short time 5) Well visualization of superior margin of obstructive lesion inspinal canal 3. Cessation of lateral cervical puncture, when; 1) Pain during injection of contrast media 2)Localized collection of contrast media
Contrast Media
;
Metrizamide
;
Myelography
;
Punctures
;
Spinal Puncture
4.Effects of GnRH Agonist Used for Ovarian Hyperstimulation in Human IVF-ET on the Apoptosis of Preovulatory Follicular Cells.
Hyun Won YANG ; Hyuck Chan KWON ; Kyung Joo HWANG ; Jong Min PARK ; Kie Suk OH ; Yong Dal YOON
Korean Journal of Fertility and Sterility 1999;26(1):55-65
There have been many reports to date regarding the role of GnRH as a local regulatory factor of ovarian function as studies of human and rat ovaries revealed GnRH and its receptor. In recent studies it has been shown that GnRH directly causes apoptosis in the granulosa cells of the rat ovary, and such results leads to the suggestion that the use of GnRH agonist for more stable long term ovarian hyperstimulation in human IVF-ET programs causes granulosa cell apoptosis which may lead to follicular atresia. Therefore this study attempts to determine if granulosa-luteal cell apoptosis occurs in patients during IVF-ET programs in which GnRH agonist is employed for ovarian hyperstimulation. The quality of oocyte-cumulus complexes obtained during ovum pickup procedures were assessed morphologically and then the fertilization rate and developmental rate was determined. Apoptotic cells among the granulosa-luteal cells obtained during the same procedure were observed after staining with Hematoxylin-rosin. The fragmentation degree of DNA extracted from granulosa-luteal cells was determined and comparatively analyzed. There was no difference in the average age of the patients, the number of oocytes retrieved, and fertilization and developmental rates between the FSH/hMG group and GnRH-long group. There was also no difference in the apoptosis rate and pyknosis rate in the granulosa-luteal cells between the two groups. However, when the oocyte-cumulus complexes were morphoogically divided into the healthy group and atretic group without regard for the method of hyperstimulation, the results showed that the number of oocytes obtained averaged 11.09+/-8.75 and 10.33+/-4.53 per cycle, respectively, showing no significant difference, but the fertilization rate (77.05%, 56.99%, respectively, p<0.01) and developmental ,ate (65.96%, 41.51%, respectively, p<0.01) was significantly increased in the healthy group when compared to the atretic group. The degree of apoptosis in the granulosa-luteal cells showed that in the healthy group it was 2.25% which was not significantly different from the atretic group (2.77%), but the pyknosis rate in the atretic group (27.81%) was significantly higher compared to the healthy group (11.35%, p<0.01). The quantity of DNA fragmentation in the FSH/hMG group was 32.22%, while in the GnRH-long group it was 34.27%, showing no significant difference. On the other hand the degree of DNA fragmentation was 39.05% and 11.83% in the healthy group and atretic group, respectively, showing significantly higher increase in the atretic group (p<0.01). The above results suggest that death of granulosa-luteal cells according to the state of the oocyte-cumulus complex is more related to pyknosis rather than apoptosis. Also, the GnRH agonist used in ovarian hyperstimulation does not seem to directly affect the apoptosis of retrieved oocytes and granulosa-luteal cells, and which is thought to be due to the suppression of the apoptogenic effect of GnRH agonist as a result of the high doses of FSH administered.
Animals
;
Apoptosis*
;
DNA
;
DNA Fragmentation
;
Female
;
Fertilization
;
Follicular Atresia
;
Gonadotropin-Releasing Hormone*
;
Granulosa Cells
;
Hand
;
Humans*
;
Luteal Cells
;
Oocytes
;
Ovary
;
Ovum
;
Rats
5.Beneficial Effects of Estrogen in Syndrome X of Postmenopausal Women.
Dongsoo KIM ; Ki Hyun BYUN ; Hyuck Moon KWON ; Yong Won YOON ; Bum Kee HONG ; Kyung Soon SONG ; Hyun Seung KIM
Korean Circulation Journal 1999;29(3):298-305
BACKGROUND: There are many reports about the correlation between cardiovascular disorders and estrogen deficiency in postmenopausal women. The purpose of current study is to know that postmenopausal estrogen therapy may affect the lipid metabolism and endogenous fibrinolytic system and exercise tolerance. METHOD: We investigated the relation of estrogen treatment (srogen 0.625 mg/day) to serum lipid levels, angiotensin converting enzyme activity, plasminogen activator inhibitor-1 and parameters of treadmill test in 22 postmenopausal women of normal coronary artery with abnormal exercise test complained with chest pain accompanied by postmenopausal symptoms. RESULTS: Estrogen treatment significantly elevated the serum HDL-cholesterol level (42.8 to 50.1 mg/dl, p<0.05) and reduced the PAI-1 level (16.2 to 10.4 ng/dl, p<0.01) without considerable side effects. During the exercise test, the positivity appearance time and total exercise duration is significantly increased after estrogen treatment. CONCLUSION: The postmenopausal use of estrogen favorably changed the lipid level, fibrinolytic system and might improve the microcirculation which may protect against the ischemic heart disease risk without significant side effects.
Chest Pain
;
Coronary Vessels
;
Estrogens*
;
Exercise Test
;
Exercise Tolerance
;
Female
;
Humans
;
Lipid Metabolism
;
Microcirculation
;
Myocardial Ischemia
;
Peptidyl-Dipeptidase A
;
Plasminogen Activator Inhibitor 1
;
Plasminogen Activators
;
Postmenopause
6.Hyperinsulinemia in Patients with Chest Pain and Normal Coronary Angiograms.
Kwi Soon LEE ; Hyuck Moon KWON ; Byoung Kwon LEE ; Dong Hoon CHA ; Young Won YOON ; Hyun Seung KIM
Korean Circulation Journal 1995;25(5):960-966
BACKGROUND: Angina with normal coronary angiogram has been called syndrome X or microvasclar angina. Pathophysiologic mechanisms for chest pain in this group of patients are not known exactly. This study was performed to compare the insulin level of the patients with syndrome X with that of the healthy asymptomatic volunteers. METHODS: The syndrome X group was consisted of 18 patients(11 men and 7 women). All patients had typical chest pain and positive exercise test with a completely normal coronary andgiogram. Patients with hypertension, diabetes mellitus, and there taking any drug known to affect the insulin secretion were excluded. The control group was consisted of 38 healthy subjects(25 men and 11 women) who were not taking any medications. We measured the plasma glucose insulin and C-peptide concentration during oral glucose tolerance test in both groups. RESULTS: Fasting plasma glucose was normal in all patients in both groups. There were no significant differences in plasma glucose level, during the oral grucose tolerance test. There were no significant differences between control and wyndrome X group in the fasting plasma insulin concentration(5.1+/-2.4 vs 5.9+/-2.7 microg/ml, p>0.05). However, the insulin levels at 60min(47.6+/-20.0 vs 84.0+/-68.0 microg/ml) and 120 min(31.4+/-18.2 vs 92.9+/-83.8 microg/ml)were significantly higher in the syndrome X group(p<0.05). THere were no significant differences in the C-peptide concentrations at fasting, 60 min and 120 min after oral glucose tolerance test between control and syndrome X group(p>0.05). CONCLUSION: As shown in above results, there were significant differences in insulin concentrations, but nor in C-peptide concentrations between control and syndrome X group. Thus it can be suggested that the increased dinsulin level in these patients is resulted from the altered insulin action to the target tissues, not from the pancreatic overproduction of insulin. We suggest that this hyperinsulinemia resulted from the insulin resistance play a possible role in the abnormality of microvascular circulation as a mechanism of Syndrome X.
Blood Glucose
;
C-Peptide
;
Chest Pain*
;
Diabetes Mellitus
;
Exercise Test
;
Fasting
;
Glucose Tolerance Test
;
Humans
;
Hyperinsulinism*
;
Hypertension
;
Insulin
;
Insulin Resistance
;
Male
;
Plasma
;
Thorax*
;
Volunteers
7.Retraction: Risk Factors for Post-ERCP Pancreatitis after Needle Knife Sphincterotomy following Repeated Probing.
Jun Kyu LEE ; Joo Kyoung PARK ; Sang Hyub LEE ; Won Jae YOON ; Kwang Hyuck LEE ; Ji Kon RYU ; Yong Tae KIM ; Yong Bum YOON
Korean Journal of Gastrointestinal Endoscopy 2008;37(1):82-82
No abstract available.
8.A Comparison of Covered Expandable Metal Stent and Uncovered Expandable Metal Stent for the Management of Distal Malignant Biliary Obstruction.
Won Jae YOON ; Kwang Hyuck LEE ; Jun Kyu LEE ; Ji Kon RYU ; Yong Tae KIM ; Woo Jin LEE ; Yong Bum YOON
Korean Journal of Gastrointestinal Endoscopy 2008;36(2):124-124
9.Effect of Low Dose Enteric-coated Aspirin Alone or Combination with Ticlopidine on Platelet.
Yangsoo JANG ; Hyun Young PARK ; Hyuck Moon KWON ; In Jai KIM ; Jung Hwan KIM ; Young Won YOON ; Dong Soo KIM ; Hyun Seung KIM ; Anna LEE ; Kyung Soon SONG
Korean Circulation Journal 1997;27(7):730-737
BACKGROUND: The role of platelet in the pathogenesis of acute coronary syndrome and cerebral thrombosis is well known and the platelet inhibitors are used widely for primary and sccondary prevention of cardiovascular disease. Aspirin is the least expensive and most widely used antiplatelet agent and its effect is associated with its ability to inhibit plateletthromboxane A2 synthesis. The effectiveness of aspirin is dependent on its ability to block the formation of thromboxane A2. Ticlopidine is another popular antiplatelet agent used today in the era of stent implantation for treating coronary artery obstructive disease(CAOD) with aspirin. The mechanism of action of ticlopidine is clearly different from that of aspirin. It is concluded recently that ticlopidine is an inhibitor of ADP binding to platelets. The inhibition of ADP binding to platelets by ticlopidine is very nicely correlated with its does and the inhibition of platelet aggregation. Therefore, in this study, antiplatelet effect of low dose enteric-coated aspirin in place of aspirin and combined therapy with low does enteric-coated aspirin plus ticlopidine were evaluated in the normal subjects. METHOD: IN twenty normal subjects, platelet aggregation tests with adenosine diphosphate(ADP) and collagen were performed baseline, after I week adminisrtation of enteric-coated aspirin, and in randomly selected ten among twenty normal subjects, I week administration of enteric-coated aspirin and ticlopidine. The maximal aggregation rate was calculated by measuring the maximal change of the light transmittance after addition of aggregating agents. RESULT: Low does enteric-coated aspirin inhibited platelet aggregation in response to collagen significantly. Less than 25% of antiaggregation effect was noted in about 50% of subjects with low dose enteric-coated aspirin when platelet aggregation was induced by ADP. Ticlopidine in combination with low does enteric-coated aspirin potentiated the inhibitory effect significantly on platelet aggregation in response to ADP. CONCLUSION: Effect of low dose enteric-coated aspirin alone on platelet aggregation in response to ADP stimulation was weak and showed variablity, comparing to collagen stimulation. The combined treatment of ticlopidine plus aspirin was synergistically inhibited platelet aggregation responding to ADP stimulation. Therefore to achieve the synergistic inhibition of platelet aggregation to ADP and collagen stimulation, combination theraphy might be a effective regimen.
Acute Coronary Syndrome
;
Adenosine
;
Adenosine Diphosphate
;
Aspirin*
;
Blood Platelets*
;
Cardiovascular Diseases
;
Collagen
;
Coronary Vessels
;
Intracranial Thrombosis
;
Platelet Aggregation
;
Platelet Aggregation Inhibitors
;
Stents
;
Thromboxane A2
;
Ticlopidine*
10.Clinical significance of serum TSH in euthyroid patients with paroxysmal atrial fibrillation.
Hyuck Moon KWON ; Byoung Kwon LEE ; Yung Won YOON ; Jeong Kee SEO ; Hyun Seung KIM
Yonsei Medical Journal 1995;36(5):448-456
Atrial fibrillation may occur in patients with a variety of cardiovascular or chronic disease as well as in normal subjects. Many authors reported that atrial fibrillation occurs in patients with thyrotoxicosis. It is reported that a low serum thyrotrophin concentration in an asymptomatic person with normal serum thyroid hormone concentrations can be a independent risk factor for developing atrial fibrillation. But we focused on the significance of serum thyroid stimulating hormone (TSH) in the euthyroid patient with atrial fibrillation whose serum level of T3, T4, fT4, and even TSH were absolutely within normal range. On our results, there was no significant differences in age, sexual distribution, and left ventricular ejection fraction between the patients group of paroxysmal and chronic persistent atrial fibrillation (p> 0.05), but there was larger left atrial dimension (LAD) and more cases of rheumatic heart disease in the chronic persistent atrial fibrillation group and there was more cases of lone atrial fibrillation in the paroxysmal atrial fibrillation group (p< 0.05). There was no significant differences in serum levels of T3, T4, fT4 between paroxysmal and chronic persistent atrial fibrillation, but significantly lower serum TSH was found in patients with paroxysmal atrial fibrillation (p< 0.001), and these findings were more significant after the control of hemodynamic change (p< 0.001 vs p< 0.05). The discriminant value in serum TSH between the paroxysmal and chronic atrial fibrillation group was 1.568U/mL with about 76% of predictive power. There was significantly lower serum TSH in paroxysmal atrial fibrillation in all age groups (p< 0.05). There was a significantly higher prevalence of cerebral thromboembolic events in chronic persistent (27.7%) and disease-associated (15.0% atrial fibrillation than in the paroxysmal (3.3%) and lone (4.5%) atrial fibrillation group (p< 0.001). Therefore, we suggest that serum TSH below the serum concentration of 1.5U/mL can be a risk factor for developing atrial fibrillation when the serum level of T3, T4, fT4, and even TSH were within absolutely normal range.
Adult
;
Aged
;
Aged, 80 and over
;
Analysis of Variance
;
Atrial Fibrillation/*blood/physiopathology
;
Chi-Square Distribution
;
Female
;
Human
;
Male
;
Middle Age
;
Thyroid Function Tests
;
Thyroid Gland/*physiopathology
;
Thyrotropin/*blood