1.Additional Comments on 'Clinical Trial to Evaluate the Efficacy and Safety of a Home-use Intense Pulsed Light Device for Hair Removal, Treatment of Acne and Pigmentation Disorders, and Fine Wrinkle Reduction'.
Seonguk MIN ; Hyuck Hoon KWON ; Seon Yong PARK ; Ji Young YOON ; Dae Hun SUH
Korean Journal of Dermatology 2015;53(1):88-88
No abstract available.
Acne Vulgaris*
;
Hair Removal*
;
Pigmentation Disorders*
2.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
3.Induction of Vitiligo-Like Hypopigmentation after Imiquimod Treatment of Extramammary Paget's Disease.
Hyuck Hoon KWON ; Kwang Hyun CHO
Annals of Dermatology 2012;24(4):482-484
No abstract available.
Aminoquinolines
;
Hypopigmentation
;
Paget Disease, Extramammary
4.Intravenous Immunoglobulin Treatment in a Child with Resistant Atopic Dermatitis.
Annals of Dermatology 2012;24(1):66-69
In a subgroup of patients suffering from atopic dermatitis (AD), treatment is quite difficult even after taking oral immunosuppressants. High-dose intravenous immunoglobulin (IVIG) treatment has been reported to be beneficial for them in a few uncontrolled trials. Herein we report a case of intractable AD in a 5-year-old girl who had significant clinical improvement after receiving 3 cycles of IVIG treatment (2 g/kg) without notable side effects. Since the first infusion of IVIG, the patient's skin lesions improved steadily and the improvement persisted until the 8-month follow-up. The eczema area and severity index score decreased remarkably, while immunologic parameters did not correlate with clinical improvement. This case suggests that IVIG therapy can be quite effective and safe for children with resistant AD.
Child
;
Dermatitis, Atopic
;
Eczema
;
Follow-Up Studies
;
Humans
;
Immunoglobulins
;
Immunoglobulins, Intravenous
;
Immunosuppressive Agents
;
Preschool Child
;
Skin
;
Stress, Psychological
5.New Provisional Classification of Juvenile Idiopathic Arthritis Applying Rheumatoid Factor and Antinuclear Antibody
Hyuck Jin KWON ; Myung Hoon BANG ; Kwang Nam KIM
Journal of Rheumatic Diseases 2018;25(1):34-46
OBJECTIVE: Previous classification systems for juvenile idiopathic arthritis (JIA) were based on the number of joints involved and did not categorize homogenous disease entities. Therefore, JIA patients were reclassified retrospectively by applying rheumatoid factor (RF) and antinuclear antibody (ANA), which have been proven to constitute a homogenous disease entity. METHODS: The medical records of JIA patients were investigated retrospectively and reclassified into six categories using the new provisional classification. The nomenclature was based on Dr. Martini's proposal in the 23rd European Paediatric Rheumatology Congress (2016) at Genoa, Italy. New categories included systemic JIA (sJIA), RF-positive JIA (RF-JIA), early-onset ANA-positive JIA (eoANA-JIA), enthesitis/spondylitis-related JIA (ESR-JIA), “other JIA”, and “unclassified JIA”. RESULTS: Of a total of 262 JIA patients, 71 (27.1%) were reclassified as sJIA, 31 (11.8%) as RF-JIA, 22 (8.4%) as eoANA-JIA, 63 (24.0%) as ESR-JIA, 65 (24.8%) as “other JIA”, and 10 (3.8%) as “unclassified JIA”. A comparison of RF-JIA, eoANA-JIA, and ESR-JIA revealed significant differences in the gender ratio, age of disease onset, and the cumulative number and type of joints involved among the three groups. “Other JIA” comprised a significant proportion (24.8%) and warrants the need for further classification. The characteristics of the RF-positive patients were comparable to those of the anti-cyclic citrullinated peptide antibody-positive patients. The ANA positivity was lower (28.2%) than that in Western studies but showed similar clinical features. CONCLUSION: This is the first study applying RF and ANA to classify JIA without considering the joint counts. The six new categories include sJIA, RF-JIA, eoANA-JIA, ESR-JIA, “other JIA,” and “unclassified JIA”.
Antibodies, Antinuclear
;
Arthritis, Juvenile
;
Classification
;
Humans
;
Italy
;
Joints
;
Medical Records
;
Retrospective Studies
;
Rheumatoid Factor
;
Rheumatology
6.Pemphigus Foliaceus Associated with Psoriasis during the Course of Narrow-Band UVB Therapy: A Simple Coincidence?.
Hyuck Hoon KWON ; In Ho KWON ; Jin Ho CHUNG ; Jai Il YOUN
Annals of Dermatology 2011;23(Suppl 3):S281-S284
Although psoriasis and bullous diseases are considered to be completely different disease entities, the literature has reported a few cases of psoriasis associated with bullous diseases, most of which are bullous pemphigoid. In limited cases, pemphigus foliaceus has also been reported in association with psoriasis. In most of them, pemphigus lesions usually developed on an untreated patient with a chronic history of psoriasis. Herein, we report a case of 53-year-old male with a chronic history of psoriasis who first developed generalized erosive lesions after 26 cycles of narrow-band ultraviolet B (NBUVB) therapy. A diagnosis of pemphigus foliaceus was made based on skin biopsy and direct immunofluorescence assay. Pemphigus lesions were well controlled with combination therapy of oral steroid and azathioprine. This is the first case where pemphigus foliaceus co-occurred with psoriasis during NBUVB therapy.
Azathioprine
;
Biopsy
;
Fluorescent Antibody Technique, Direct
;
Humans
;
Male
;
Middle Aged
;
Pemphigoid, Bullous
;
Pemphigus
;
Psoriasis
;
Skin
7.Efficacy and Safety of Atorvastatin in Patients with Hypercholesterolemia.
Jong Hoon KOH ; Joon Han SHIN ; Han Soo KIM ; Seung Jea TAHK ; Byung Il CHOI ; Dongsoo KIM ; Hyuck Moon KWON ; Hyun Seung KIM
Korean Circulation Journal 1999;29(9):928-936
BACKGROUND: Previous studies indicated that a recently approved synthetic HMG-CoA reductase inhibitor, atorvastatin, reduces LDL cholesterol and triglyceride. To assess the efficacy on the level of serum LDL cholesterol and other lipoprotein fractions and its safety, we investigated 59 patients for lipid and side effect profile. METHOD: In patients with hypercholesterolemia, who showed 12-hours fasting serum LDL cholesterol>145 mg/dl and <250 mg/dl and triglyceride levels<400 mg/dl were enrolled to diet therapy for 4 weeks. After 4 weeks of diet therapy, serum lipid profile were reevaluated and patients with LDL cholesterol > or =130 mg/dl were assigned to receive 10 mg dose of atorvastatin once daily for 4weeks. After 4 weeks of drug therapy, serum lipid profile were rechecked, if showed LDL cholesterol level> or =130 mg/dl, assigned to receive 20 mg dose of atorvastatin once daily until 8 weeks. RESULTS: Of the 59 patients were assigned to receive atorvastatin therapy, 52 patients completed the study. Among lipid profiles, total cholesterol, triglyceride, LDL-cholesterol and apolipoprotein B levels showed significant reduction with mean reduction rate of 28%, 13%, 38%, 32% respectively after 4 weeks and 31%, 13%, 41% and 34% respectively after 8 weeks. HDL-Cholesterol and lipoprotein (a) level did not show significant change after 8 weeks of therapy. Nine patients had mild adverse events, such as elevated ALT, epigastric pain, insomnia, thumb pain. postural hypotension, palpitation and constipation. Only three patients of fifty-nine withdrew from the study due to adverse events related to drug treatment. CONCLUSION: The atorvastatin was highly effective and generally well tolerated with an acceptable safety profile in patients with primary hypercholestelemia.
Apolipoproteins
;
Cholesterol
;
Cholesterol, LDL
;
Constipation
;
Diet Therapy
;
Drug Therapy
;
Fasting
;
Humans
;
Hypercholesterolemia*
;
Hypotension, Orthostatic
;
Lipoprotein(a)
;
Lipoproteins
;
Oxidoreductases
;
Sleep Initiation and Maintenance Disorders
;
Thumb
;
Triglycerides
;
Atorvastatin Calcium
8.Effect of Partial Laser Assisted Hatching on Mouse Embryos.
Dong Hoon KIM ; Myo Kyung KIM ; Hoi Chang LEE ; Duck Sung KO ; Won Il PARK ; Hyuck Chan KWON ; Ho Joon LEE
Korean Journal of Fertility and Sterility 2001;28(2):147-154
OBJECTIVE: The present study was performed to investigate the efficiency of partial laser assisted hatching (p-LAH; lased 1/2 ZP width from ZP edge) on hatching of mouse blastocysts. METHODS: We used non-contact 1.48 micrometer diode laser (MTM, Switzland) to create a precise hole on zona pellucida. 2-cell embryos were collected from the mouse (ICR) oviduct at 48 hours after hCG administration. Collected 2-cell embryos were cultured in the P-1 medium supplemented with 0.4% BSA. For experiments, embryos at 8-cell stage were used after 20~22 hours in culture. After conventional (c-LAH) or partial laser assisted hatching, the embryos were further cultured in P-1 medium supplemented with 0.4% BSA for 3 days. To compare efficiency of complete and partial laser assisted hatching, hatching rate, hatching time and blastocyst diameter and zona pellucida thickness at hatching time were investigated. Embryos were examined every 12 hours. Blastocyst diameter and zona pellucida thickness at hatching time were measured with an ocular micrometer. RESULTS: Hatching rates of p-LAH group (84.2%) was significantly higher than that of control group (39.3%), but there was no difference between the p-LAH (84.2%) and c-LAH (91.2%). p-LAH group was hatched 12 hours earlier than control group, but hatched 12 hours later than c-LAH group. The diameter of blastocyst at hatching time of p-LAH group (113.1+/-6.4 micrometer) was smaller than that of control group (122.2+/-5.0 micrometer), but larger than that of c-LAH group (102.2+/-2.7 micrometer). Zona pellucida thickness at hatching time of p-LAH group (6.4+/-0.9 micrometer) was thicker than that of control group (4.5+/-1.5 micrometer), but thinner than that of c-LAH group (10.0+/-0.8 micrometer). CONCLUSION: These results suggest that p-LAH may maintains the cell arrangement of early embryos to ensure successful development and prevent precocious hatching of blastocyst when compare to c-LAH and conventional (acidic tyrode) AH. Thus, p-LAH may provide a valuable and effective AH technique for human ART program.
Animals
;
Blastocyst
;
Embryonic Structures*
;
Humans
;
Lasers, Semiconductor
;
Mice*
;
Oviducts
;
Zona Pellucida
9.Congenital and Multiple Hobnail Hemangiomas.
So Young YOON ; Hyuck Hoon KWON ; Hye Chan JEON ; Jong Hee LEE ; Soyun CHO
Annals of Dermatology 2011;23(4):539-543
Hobnail hemangioma (targetoid hemosiderotic hemangioma) is a vascular tumor affecting the limbs or trunk. Characteristically, the lesion has a "targetoid" clinical feature and dilated vascular spaces lined by hobnail endothelial cells at histologic examination. The age of onset is widely variable, form 5~67 years, typically occurring in young or middle-aged persons. It is usually apparent as a small solitary lesion. However, multiple lesions are identified sometimes. Herein, we report two cases of hobnail hemangioma in 7-year-old and 15-year-old males. Of note, the former case had a congenital lesion and the latter, multiple acquired lesions, which are both rare atypical presentations of the disease.
Adolescent
;
Age of Onset
;
Child
;
Endothelial Cells
;
Extremities
;
Hemangioma
;
Humans
;
Male
10.Effect of Infarct-Related Artery Patency on Heart Rate Variability in Acute Myocardial infarction.
Joon Han SHIN ; Han Soo KIM ; Seung Jae TAHK ; Byung il CHOI ; Hyuck Moon KWON ; Myeong Ki HONG ; Hyun Young PARK ; Dong Hoon CHA ; Hyun Seung KIM
Korean Circulation Journal 1995;25(5):949-959
BACKGROUND: In survivors of acute myocardial infarction(ANI), reduced heart rate variability(HRV) has been demonstrated to be an independent predictor of sudden cardiac death and mortality. The heart rate variability can be examined and analyzed non-invasively and quantitated with 24-hour ambulatory ECG monitoring. In general, the patency of infarct-related artery appears to be one of the most important prognostic factor after AMI. Therefor, the correlation between infarct artery patency and HRV was examined in survivors of AMI. METHODS: The 24-Hour ambulatory electrocardiogram was performed in 23 patients with AMI and 20 normal controls, and analyzed for frequency & time domain HRV. HRV was recorded dwithin 7 days after AMI, and coronary angiogram was performed at 7th day after AMI. The AMI patients were divided into two groups, depending upon patency of infarct-related artery and correlated to clinical manifestations. Thirteen patients had patent vessel(Group 1) and ten patients had non-patent vessel(Group 2). Parameters of frequency domain HRV include LF, HF & LF/HF ratio and time domain HRV include SDNN, SDANN, SD, rMSSD and pNN50. RESULTS: All parameters of HRV was depressed in patients of AMI than in normal control(p<0.05). The mean left ventricular ejection fraction(LVEF) was 54.1+/-10.6% in group 1 and 42.6+/-12.2% in group 2(p<0.05). The mean values of LF, SDNN, SDANN, and SD in group 1 and group 2 were 5.09+/-0.83msec2/Hz & 4.09+/-0.53msec2/Hz, 84.5+/-24.2msec & 59.0+/-11.8msec, 73.2+/-22.8msec & 50.5+/-12.6msec, and 37.8+/-13.1msec & 27.2+/-4.4msec(p<0.05), respectively. There was no difference between two groups in HF,rMSSD and pNN50. The location of infarction and thrombolytic therapy itself did not influence of HRV. The mean values of HF, SDANN, rMSSD and pNN50 in patients with LVEF<40% were reduced significantly than in patients with LVEF> or =40%. There was a significant correlation between LVEF and LF, between LVEF and HF and between LVEF and LF/HF ratio(r:0.55, p<0.05;r:0.67, p<0.05;r:-0.56, p<0.05). CONCLUSION: HRV was depressed due to reduced vagal activity in patients with AMI. The values of LF, SDNN, SDANN, and SD in group of patent infarct-related artery were reduced significantly than in non-patent group.
Arteries*
;
Death, Sudden, Cardiac
;
Electrocardiography
;
Heart Rate*
;
Heart*
;
Humans
;
Infarction
;
Mortality
;
Myocardial Infarction*
;
Survivors
;
Thrombolytic Therapy