1.Effects of Selective Serotonin Reuptake Inhibitors on the Retention of Passive Avoidance Learning after Chronic Mild Stress in Rats.
Journal of the Korean Society of Biological Psychiatry 1997;4(2):237-245
The study was designed to evaluate the significant roles of SSRI in rat of depression model. Chronic exposure to mild unpredictable stress has been found to depress the consumption of sweet 1% sucrose solutions in the Sprague-Dawley rats. We applied the variety of 11 types of stress regimens and identified depressive behavious(developed by Willner) in 70 Sprague-Dawley rats. Rats in experiments were stratified into 6 groups, i.e.; 3 kinds of SSRI(paroxetine, fluoxetine, sertraline), clomipramine, choline and saline control. Memory function was evaluated by passive avoidance learning and retention test. The authors determined how long memory retention would remain improved with 24 hour, 1 week, 2 weeks, 3 weeks, and 4 weeks at training-testing interval in depressive states of the Sprague-Dowley rats. The results were as follows; 1) There were to significant differences between the 6 groups at the 24 hour training-testing interval. 2) The paroxetine treated group showed significant differences from the control group at the 1 week and 2 weeks training-testing interval. 3) The paroxetine and the fluoxetine treated groups showed significant differences from the control group at 3 week training-testing interval. 4) The paroxetine and the choline treated groups showed significant differences from the control group 4 week training-testing interval. In summary, paroxetine had on effect on long term memory processing from 1st week to 4th week. Also, fluoxetine(or 3rd week) and choline(at 4th week) had effect on long term memory processing. Sertraline, clomipramine were ineffective on memory processing during 4 weeks observation. Possible explanations why paroxetine had early effect on memory processing than the other selective serotonin reuptake inhibitors are rapid bioavailability, which is the characteristics of pharmacokinetics of paroxetine. In clinical situation, author carefully suggest that SSRI would be beneficial to improve the memory function caused by depressive neurochemical changes.
Animals
;
Avoidance Learning*
;
Biological Availability
;
Choline
;
Clomipramine
;
Depression
;
Fluoxetine
;
Memory
;
Paroxetine
;
Pharmacokinetics
;
Rats*
;
Rats, Sprague-Dawley
;
Serotonin Uptake Inhibitors*
;
Sertraline
;
Sucrose
2.A clinical study of seasonal affective disorder.
Kyung Kyu LEE ; Do Joon YOON ; Hwan Il CHANG
Journal of Korean Neuropsychiatric Association 1992;31(1):84-92
No abstract available.
Seasonal Affective Disorder*
;
Seasons*
3.Arthroscopic Total Meniscectomy of the Lateral Discoid Meniscus
Jin Hwan AHN ; Sang Un LEE ; Il Hyung CHO
The Journal of the Korean Orthopaedic Association 1985;20(2):253-258
The technique of the arthroscopic total meniscectomy of discoid meniscus is very difficult. Ikeuchi(1982) reported a technique of arthroscopic total meniscectomy of the lateral discoid meniscus by removal of 2/3 of the anterior part of the meniscus first and then by morselization. The purpose of this paper is to report a technique of arthroscopic total meniscectomy of the lateral discoid meniscus as a whole. During the period from October 1982 to October 1984, we had 12 experiences of arthroscopic total meniscectomy of the discoid meniscus and found good results, that is, little postoperative pain, short period of hospitalization and early restoration of joint motion without physical therapy. Complications are 3 cases of symptomless slight lateral instability and 4 cases of hemarthrosis.
Arthroscopy
;
Hemarthrosis
;
Hospitalization
;
Joints
;
Knee
;
Pain, Postoperative
4.Susceptibility of cockroaches (Blattella germanica Linneaus) to various insecticides.
Chul Hwan CHA ; Ki Sun HAM ; Young Il LEE ; Sung Hoi KOO ; Ryang Il HAN
The Korean Journal of Parasitology 1970;8(2):67-70
During the period from May to October 1969, the authors carried out a series of tests with the aim to ascertain the present status of susceptibility of adult cockraoches to various insecticides. The tests on the susceptibility of cockroaches to dieldrin, D.D.V.P., Diazinon; Dibrom, Malathion and lindane were performed with the topical application and the residual film methods under the conditions of 26 degrees C and 80% of relative humidity. The insects tested were collected from Seoul City and were reared at the laboratory. Some of the important results so far obtained can be summarized as follows: The median lethal doses (LD(50)) of the five insecticides against female adult cockroaches were: 0.4 ug/roach or 4.02 ug/body weight (gm) by Dieldrin, 0.29/roach or 2.88 ug/body weight (gm) by D.D.V.P., 0.29 ug/roach or 2.96 ug/body weight (gm) by Diazinon, 0.54 ug/roach or 5.37 ug/body weight (gm) by Dibrom, and 2.96 ug/roach or 29.60 ug/body weight (gm) by Malathion. And those against male adult cockroaches were: 0.18 ug/roach or 3.29 ug/body weight (gm) by Dieldrin, 0.27 ug/roach or 4.89 ug/body weight (gm) by D.D.V.P., 0.16 ug/roach or 2.91 ug/body weight (gm) by Diazinon, 0.49 ug/roach or 8.97 ug/body weight (gm) by Dibrom, and 1.32 ug/roach or 24.19 ug/body weight (gm) by Malathion. The level of susceptibility of adult cockroaches to the insecticides tested was 1.0-1.6 times higher as compared with the results obtained on the Japanese Takashi strain. The median knockdown times (LT(50)) of the female adult cockroaches by insectcides at 1% concentration of 3 mg per square centimetre were 1.82 hours by Malathion, 1.36 hours by Diazinon, 0.56 hours by Lindane, 0.50 hours by Dibrom, and 2.56 hours by D.D.V.P. A marked difference was seen to exist between the males and the females. The female cockroaches were more resistant than the male to Dieldrin, Diazinon and Malathion.
parasitology-arthropoda-cockcroach-Blattella germanica
;
chemotherapy
;
Dieldrin
;
D.D.V.P.
;
Diazinon
;
Dibrom
;
Malathion
;
lindane
;
resistance
5.Cardiac Rupture of the Junction of the Right Atrium and Superior Vena Cava in Blunt Thoracic Trauma.
Chun Sung BYUN ; Il Hwan PARK ; Tae Hoon KIM ; Eunbi LEE ; Joong Hwan OH
Korean Journal of Critical Care Medicine 2015;30(1):27-30
Cardiac rupture following blunt thoracic trauma is rarely encountered, since it commonly causes death at the scene. With advances in critical care, blunt cardiac rupture has been successfully treated with well-organized team approach including an emergency physician, anesthesiologist, and cardiac surgeon. We encountered a patient with blunt cardiac rupture of the junction of the superior vena cava and right atrium that extended 7 cm to the right ventricular junction. The patient was successfully resuscitated after a closed thoracostomy and pericardiocentesis with fluid loading. Cardiac injury was repaired via mid-sternotomy without cardiopulmonary bypass. The patient recovered without complications and was discharged on the 7th day after surgery.
Cardiopulmonary Bypass
;
Critical Care
;
Emergencies
;
Heart Atria*
;
Heart Injuries
;
Heart Rupture*
;
Humans
;
Pericardiocentesis
;
Thoracostomy
;
Vena Cava, Superior*
6.Eczema Herpeticum in Darier's Disease.
Jae Seok YANG ; Kyoung Moon KIM ; Gil Joo LEE ; Il Hwan KIM ; Chil Hwan OH
Annals of Dermatology 1998;10(1):32-34
Eczema herpeticum is a herpes simplex virus infection with disseminated skin involvement superimposed on a pre-existing dermatosis. Dariers disease has been reported to be among the dermatoses susceptible to the sudden onset of a widespread vesicular eruption accompanied by high fever known as Kaposis varicelliform eruption. We report a case of eczema herpeticum in a 46-year-old woman associated with Dariers disease.
Darier Disease*
;
Eczema*
;
Female
;
Fever
;
Humans
;
Kaposi Varicelliform Eruption*
;
Middle Aged
;
Simplexvirus
;
Skin
;
Skin Diseases
7.The Histological Study of Accessory Tragus: A Comparison of Vertical Sections with Transverse Sections.
Ki Sung KIM ; Ae Lee KIM ; Chil Hwan OH ; Il Hwan KIM
Annals of Dermatology 2000;12(3):160-164
BACKGROUND: Accessory tragi contain a central core of cartilage, which is the most important pathological factor, but often are misdiagnosed as soft fibroma/hair follicle nevi if sections cannot show a central core of cartilage. OBJECTIVES: The purposes of this study were aimed at comparing transverse sections with vertical sections and demonstrating the value of transverse sections about histological diagnosis for accessory tragus. METHODS: We studied 14 cases of patients with accessory tragi. All cases were totally excised and all 16 biopsy specimens (bilateral in 2 cases) were obtained. We classified these biopsy specimens into two groups regarding the removal of cartilage.All specimens were vertical or transverse seiral sectioned and we compared these histologic findings with established histologic diagnostic criteria which Satoh et al. reported. RESULTS: On the specimens of group 1 in which there was cartilage, subcutaneous prominent connective tissue framework whirling around cartilage could be observed on all transverse sections, but was not always present on vertical sections. Prominent connective tissue framework and pilosebaceous units with circular arrangement of eccrine glands were simultaneously in the center of transverse sections regardless of the presence of cartilage. CONCLUSIONS: In this study, transverse sections showed all diagnostic histologic important features for accessory tragus: presence of central cartilage, prominent subcutaneous connective tissue framework, and various degree of pilosebaceous unit, especially with circular arrangement of eccrine glands. So transverse sectioning could be a useful method for accurate histological diagnosis of accessory tragi regardless of the removal of cartilage when doing excisional biopsy.
Biopsy
;
Cartilage
;
Connective Tissue
;
Diagnosis
;
Eccrine Glands
;
Humans
;
Nevus
8.A case of polymyositis associated with ascending colon cancer.
Seok Hwan LEE ; Kee Hyung LEE ; Joung Il LEE ; Ju Hie LEE
Journal of the Korean Society of Coloproctology 1992;8(3):303-310
No abstract available.
Colon, Ascending*
;
Polymyositis*
9.Poststreptococcal Glomerulonephritis without Abnormality of Urine.
Byung Hwan LEE ; Byung Lynl LEE ; Kwang Chan DOH ; Sung Il AHN ; Hyun Soon LEE
Journal of the Korean Pediatric Society 1982;25(10):1073-1077
No abstract available.
Glomerulonephritis*
10.A modified elution method for determining the presence of fetal red blood cells.
No Bum LEE ; Hye Kyung LEE ; Jung Hwan SHIN ; Moon Il PARK ; Sung Ro CHUNG ; Hyung MOON
Korean Journal of Perinatology 1992;3(2):72-76
No abstract available.
Erythrocytes*