1.Induction of TCSA Photocontact Hypersensitivity in Guinea Pigs.
Gwang Yoon CHO ; Si Yong KIM ; Won HOUH
Korean Journal of Dermatology 1985;23(2):199-203
S.I. of TCSA PCH (group B) and musk ambrette PCH (group D) were respectively g3 49% and 75.00 S.I. of group A and B, which were only challenged with TCSA and musk ambrette respectively without prior sensitization, were 33, 33% and 27. 78%. These data indicated the TCSA PCH (group B) was experimentally produced in guinea pigs when it compared to musk ambrette PCH (group D) and controls (group A and C) (Table 1). However, S.I. of TCSA PCH was somewhat lower than index of musk ambrette PCH.
Animals
;
Guinea Pigs*
;
Guinea*
;
Hypersensitivity*
2.Neuro-Anatomical Evaluation of Human Suitability for Rural and Urban Environment by Using fMRI.
Gwang Won KIM ; Jin Kyu SONG ; Gwang Woo JEONG
Korean Journal of Medical Physics 2011;22(1):18-27
The purpose of this study was to identify different cerebral areas of the human brain associated with rural and urban picture stimulation using a 3.0 Tesla functional magnetic resonance imaging (fMRI) and further to investigate the human suitability for rural and urban environments. A total of 27 right-handed participants (mean age: 27.3+/-3.7) underwent fMRI study on a 3.0T MR scanner. The brain activation patterns were induced by visual stimulation with each rural and urban sceneries. The participants were divided into two groups as 26 subjects favorable to rural scenery and 14 subjects unfavorable to urban scenery based on their filled-in questionnaire. The differences of the brain activation in response to two extreme types of pictures by the two sample t-test were characterized as follows: the activation areas observed in rural scenery over urban were the insula, middle frontal gyrus, precuneus, caudate nucleus, superior parietal gyrus, superior occipital gyrus, fusiform gyrus, and globus pallidus. In urban scenery over rural, the inferior frontal gyrus, parahippocampal gyrus, postcentral gyrus, superior temporal gyrus, amygdala, and posterior cingulate gyrus were activated. The fMRI patterns also clearly show that rural scenery elevated positive emotion such as happiness and comfort. On the contrary, urban scenery elevated negative emotion, resulting in activation of the amygdala which is the key region for the feelings of fear, anxiety and unpleasantness. This study evaluated differential cerebral areas of the human brain associated with rural and urban picture stimulation using a 3.0 Tesla fMRI. These findings will be useful as an objective evaluation guide to human suitability for ecological environments that are related to brain activation with joy, anger, sorrow and pleasure.
Amygdala
;
Anger
;
Anxiety
;
Brain
;
Caudate Nucleus
;
Globus Pallidus
;
Gyrus Cinguli
;
Happiness
;
Humans
;
Magnetic Resonance Imaging
;
Parahippocampal Gyrus
;
Photic Stimulation
;
Pleasure
;
Surveys and Questionnaires
3.Urticaria Pigmentosa in Twin Babies.
Gwang Yoon CHO ; Eun Hee CHOO ; Hyung Ok KIM ; Chung Won KIM
Korean Journal of Dermatology 1984;22(2):249-252
Urticaria pigmentosa developed in twins at the age of 6 weeks. They have numerous round to oval shaped, discrete or confluent reddish brown colored macules over whole body surface and neither twin had vomiting, diarrhea, flushing or irritability. Their relatives are unaffected. Biopsy specimen of. back lesion showed. pooling of mast cells in the upper dermis, and electron microscopic examinattion revealed normal mast cells.
Biopsy
;
Dermis
;
Diarrhea
;
Flushing
;
Humans
;
Mast Cells
;
Twins*
;
Urticaria Pigmentosa*
;
Urticaria*
;
Vomiting
4.Deep Neck Abscesses in Children and Adolescents: 10 Year Experience in Two General Hospitals.
Eunhee KIM ; Ju Hee JEON ; Won Uk LEE ; So Young KIM ; Eun Ryoung KIM
Korean Journal of Pediatric Infectious Diseases 2011;18(2):163-172
PURPOSE: The purpose of this study was to review our recent experiences with deep neck abscesses in children and adolescents and to provide helpful information in treatment and diagnosis by comparing them with those in other available literatures. METHODS: Medical records of 36 children and adolescents admitted for deep neck abscess at two hospitals from January 2000 to October 2010 were reviewed retrospectively. RESULTS: Male to female ratio was 1.4 : 1 and the mean age was 6.5 years. Painful neck swelling and fever were the most frequent symptoms in patients under thirteen years of age whereas trismus and headache were frequent symptoms in patients over fourteen years of age. Submandibular space was the most common site of deep neck abscess in patients under thirteen years of age, whereas peritonsillar space was the most common site in patients over fourteen years of age. The results of bacterial cultures were positive in 61.5% of drained cases. Staphylococcus aureus was the most commonly identified bacteria in 6 patients (37.5%) and 5 of them were under 2 years of age. Twenty six patients received surgical drainage while the others were treated with antibiotics only. There were no statistically significant differences in the durations of admission, fever after admission, and antibiotic treatment between surgical and medical treatment groups. CONCLUSION: The common sites of deep neck abscess, associated symptoms, and causative organisms were different between children and adolescents. As there were no differences in durations of admission, fever, or antibiotics treatments between surgical and medical treatment groups, surgical drainage may be avoided by early recognition and suspicion. However, if there is no improvement of symptoms or size of abscesses within 48-72 hours of antibiotic treatment, surgical drainage should be considered.
Abscess
;
Adolescent
;
Anti-Bacterial Agents
;
Bacteria
;
Child
;
Drainage
;
Female
;
Fever
;
Headache
;
Hospitals, General
;
Humans
;
Male
;
Medical Records
;
Neck
;
Staphylococcus aureus
;
Trismus
5.Clinical Effects and Safety of Delapril in Patients with Essential Hypertension.
Se Ick OH ; Hyung Gon KIM ; Gwang Ho CHUNG ; Suck Koo CHOI ; Won Sang YOO
Korean Circulation Journal 1992;22(4):676-682
BACKGROUND: To evaluate depressure effect and safety of delapril, a new ACE inhibitor, in Korea. METHOD: Thirty three patients, aged 37-69, with mild to moderate essential hypertension were first observed for 2 weeks with placebo followed by administration of 15mg of delapril twice daily for 2 weeks, then doubled dosage to 30mg b.i.d. and combined with 25mg of dihydrochlorothiazide if optimal BP were not obtained at the end of 4th week, continued the same dose until the end of 10 week's trial period. RESULT: BP dropped 15/9mmHg inaverage at the end of 10th week rewarding 70% of cumulative effectiveness. Most frequent side reaction was dry cough, occurred in 9% of patients followed by chest tightness, headache, constipation and transient elevation of GPT. CONCLUSION: Delapril 15-30mg twice daily as monotheraphy or combined with diuretics is well tolerated and effective in the treatment of mild to moderate essential hypertension.
Constipation
;
Cough
;
Diuretics
;
Headache
;
Humans
;
Hydrochlorothiazide
;
Hypertension*
;
Korea
;
Reward
;
Thorax
6.A Case of Erythema Elevatum Diutimun.
Gwang Yoon CHO ; Eun Hee CHOO ; Yung Hwan KIM ; Won HOUH
Korean Journal of Dermatology 1984;22(2):241-244
No abstract available.
Erythema*
7.A Case of Targetoid Hemosiderotic Hemangioma.
Jong Rok LEE ; Si Won LEE ; Gwang Seong CHOI ; Seung Chul LEE ; Young Keun KIM
Annals of Dermatology 2001;13(4):228-231
Targetoid hemosiderotic hemangioma is a benign vascular tumor with a peculiar clinical presentation and histologic features sometimes difficult to differentiate from the patch stage of Kaposi's sarcoma, progressive lymphangioma, eosinophilic hemangioma, retiform hemangioendothelioma. We report a case of targetoid hemosiderotic hemangioma on upper back and right upper arm of a 28-year-old male. He has a 5mm × 5mm sized slightly raised violaceous papule surrounded by an ecchymotic halo on upper back and right upper arm. We took a biopsy of the lesion and identified it as targetoid hemosiderotic hemangioma. This is a case of targetoid hemosiderotic hemangioma with typical clinical and histopathological findings.
Adult
;
Arm
;
Biopsy
;
Eosinophils
;
Hemangioendothelioma
;
Hemangioma*
;
Humans
;
Lymphangioma
;
Male
;
Sarcoma, Kaposi
8.A Case of Tinea Capitis Due to Microsporum gypseum.
Dae Sung LEE ; Gwang Yoon CHO ; Yung Hwan KIM ; Won HOUH
Korean Journal of Dermatology 1984;22(6):643-646
Microsportcm gypseum is a geophilic fungi abundant in soil throughout the world. The infections may occur either from animal to man(zoophilic) or from soil to man (geophilic). Patierit of 13-year-old Korean male sought medical attention with skin lesion on scalp which showed scaly patch with broken hairs and a round pilar cyst like nodule. Identification of Microsporum gypseum was made by culture on Sabouraud agar media and microscopic exarnination.
Adolescent
;
Agar
;
Animals
;
Epidermal Cyst
;
Fungi
;
Hair
;
Humans
;
Male
;
Microsporum*
;
Scalp
;
Skin
;
Soil
;
Tinea Capitis*
;
Tinea*
9.Brain Activation Patterns Associated with the Effects of Emotional Distracters during Working Memory Maintenance in Patients with Generalized Anxiety Disorder.
Jong Il PARK ; Gwang Won KIM ; Gwang Woo JEONG ; Gyung Ho CHUNG ; Jong Chul YANG
Psychiatry Investigation 2016;13(1):152-156
Few studies have assessed the neural mechanisms of the effects of emotion on cognition in generalized anxiety disorder (GAD) patients. In this functional MRI (fMRI), we investigated the effects of emotional interference on working memory (WM) maintenance in GAD patients. Fifteen patients with GAD participated in this study. Event-related fMRI data were obtained while the participants performed a WM task (face recognition) with neutral and anxiety-provoking distracters. The GAD patients showed impaired performance in WM task during emotional distracters and showed greater activation on brain regions such as DLPFC, VLPFC, amygdala, hippocampus which are responsible for the active maintenance of goal relevant information in WM and emotional processing. Although our results are not conclusive, our finding cautiously suggests the cognitive-affective interaction in GAD patients which shown interfering effect of emotional distracters on WM maintenance.
Amygdala
;
Anxiety Disorders*
;
Anxiety*
;
Brain*
;
Cognition
;
Hippocampus
;
Humans
;
Magnetic Resonance Imaging
;
Memory, Short-Term*
10.A Case of Macular Hole after Exposure to Tattoo Removal by Q-Switched Neodymium:YAG Laser.
Deok Bae KIM ; Mu O JUNG ; Dong Won LEE ; Gwang Ju CHOI ; Dae Hyun KIM
Journal of the Korean Ophthalmological Society 2011;52(3):373-377
PURPOSE: To report a case of a macular hole resulting from accidental exposure to tattoo removal by the Q-Switched Nd:YAG laser, which was treated successfully by vitrectomy and silicone oil infusion. CASE SUMMARY: A 33-year-old man presented with decreased visual acuity after accidental exposure to a Q-Switched Nd:YAG laser. According to fundus examination, vitreous hemorrhage and macular edema were observed. After 21 days, a macular hole had developed which was treated by standard pars plana vitrectomy and gas tamponade. Unfortunately, closure was not obtained on the first attempt. Therefore, a second attempt using silicone oil infusion was performed. Four months after the initial visit, BCVA had increased to 20/50, and anatomical occlusion was achieved. CONCLUSIONS: The authors of the present study experienced an unusual case of macular hole developed from the Q-Switched Nd:YAG laser used to remove a tattoo. A satisfactory visual acuity was achieved after silicone oil infusion despite failure in the first surgery.
Adult
;
Humans
;
Macular Edema
;
Retinal Perforations
;
Silicone Oils
;
Visual Acuity
;
Vitrectomy
;
Vitreous Hemorrhage