1.Changes of plasma ACTH and END levels in rates after 2 minutes restraint stress and in adrenalectomized rats.
Seung Jin OH ; Chang Hoon SONG
Korean Journal of Obstetrics and Gynecology 1993;36(1):47-55
No abstract available.
Adrenocorticotropic Hormone*
;
Animals
;
Plasma*
;
Rats*
2.A case of 46,X del(X)(11.2).
Korean Journal of Obstetrics and Gynecology 1993;36(7):1026-1032
No abstract available.
3.The influence of testosterone and estradiol-17 beta on the hypothalamic-pituitary-gonadal axis.
Seung Jin OH ; Chang Hoon SONG
Korean Journal of Obstetrics and Gynecology 1992;35(12):1823-1830
No abstract available.
Axis, Cervical Vertebra*
;
Estradiol*
;
Testosterone*
4.Neuropsychological Evaluation of Visual Perception and Construction.
Journal of the Korean Society of Biological Psychiatry 1997;4(1):24-28
Visual perception is a complex process engaging many different aspects of brain functioning. Like other cognitive functions, the extensive cortical distribution and complexity of visual perceptional activities make them highly vulnerable to brain injury. Dectection and characterization of perceptual require careful assessment as well as the application of selected neuropsychological tests. In the article we reviewed neuropsychological assessment of visual perception and constructional abilities. And the principal visuospatial disorders are discussed, the associated neuropsychiatric disorders are presented.
Brain
;
Brain Injuries
;
Neuropsychological Tests
;
Visual Perception*
5.Two Cases of Seckel Syndrome.
Kyu Chang PARK ; Phil Soo OH ; Jeh Hoon SHIN
Journal of Korean Society of Pediatric Endocrinology 1998;3(2):228-230
Seckel syndrome is a rare, autosomal recessive disorder of severe growth retardation and distinct craniofacial, orodental, and skeletal anomalies. We report hereby the first two Korean cases of typical Seckel syndrome who had characteristic symptoms of intrauterine growth retardation, small head, large eyes, sharp facial features (beaked nose, dysplastic ears and narrow face) with underdeveloped chin, dwarfism, severe mental retardation, and other malformation. We report two cases of Seckel syndrome with a brief review of related literatures.
Chin
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Dwarfism
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Ear
;
Fetal Growth Retardation
;
Head
;
Intellectual Disability
;
Nose
6.Segmental short transpedicular fixation of unstable thoracic lumbar vertebral fractures.
Yung Khee CHUNG ; Young Hoon YOO ; Chang Su OH
The Journal of the Korean Orthopaedic Association 1992;27(2):518-526
No abstract available.
7.Association of Schizophrenia with Pathological Aging : A Behavioral and Histological Study Using Animal Model.
Jin Sook CHEON ; Byoung Hoon OH ; Hwan Il CHANG
Journal of the Korean Society of Biological Psychiatry 1998;5(1):83-94
OBJECTIVES: Phencyclidine(PCP) or PCP-like substances such as ketamine have been know to rekindle the cognitive dysfunction in schizophrenia. The aims of this study were to identify whether PCP-like substances can produce cognitive deficit in schizophrenia, to discuss relation with aging process, and finally to speculate underlying neurochemical mecha-nisms by various drug responses. METHODS: In experiment I, radial maze tests were done in 24 Sprague-Dawley rats for 3 days to get baseline data. Being divided into 4 groups(6 rats respectively) of normal aged, normal adult controls, atropine-treated and ketamine-treated, the radial maze tests were repeated on every week for 6 weeks, and then the rats were sacrificed by intracardiac perfusion with phosphate-buffered 10% formaldehyde solution for histology. The brain specimen was stained with hematoxylin-eosin to count cells in the prefrontal cortex and hippocampus. In experiment II, radial maze tests were done for 48 rats before any drug treatment and only after ketamine administration. Thereafter, haloperidol, bromocriptine, clonidine, nimodipine, tacrine, valproic acid, naloxone and fluoxetine were intramuscularly injected on every other day in addition to ketamine. Radial maze tests were repeated on every week for 6 weeks, and then rats were prepared by the same procedure for histology. RESULTS: 1) Reaction times of radial maze tests of atropine-treated rats were significantly prolonged than those of normal aged(p<0.05) or normal adult controls(p<0.05). Cell numbers of prefrontal cortex & hippocampus in ketamine-treated rats were significantly reduced than those in normal aged(p<0.05) or normal adult controls(p<0.005). 2) Reduced cell numbers by ketamine became significantly raised by tacrine administration in prefrontal cortex $ hippocampus(p<0.05), while there were no significant changes on radial maze test. Cell numbers also tended to be raised by nimodipine, fluoxetine and haloperidol administration. CONCLUSIONS: In conclusion, the visuospatial memory disorders in ketamine-induced psychotic rats might be partly associated with aging process. Furthermore, the responses to the various drugs suggested cholinergic system might have an important role in the neurochemical mechanism of the cognitive dysfunction in ketamine-induced psychosis. Otherwise, calcium metabolism as well as serotonergic and dopaminergic systems seemed to be possibly related.
Acetylcholine
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Adult
;
Aging*
;
Animals*
;
Brain
;
Bromocriptine
;
Calcium
;
Cell Count
;
Clonidine
;
Fluoxetine
;
Formaldehyde
;
Haloperidol
;
Hippocampus
;
Humans
;
Ketamine
;
Memory Disorders
;
Metabolism
;
Models, Animal*
;
Naloxone
;
Nimodipine
;
Perfusion
;
Prefrontal Cortex
;
Psychotic Disorders
;
Rats
;
Rats, Sprague-Dawley
;
Reaction Time
;
Schizophrenia*
;
Tacrine
;
Valproic Acid
8.Two Cases of Linear and Whorled Nevoid Hypermelanosis.
Jung Hoon CHA ; Ho Sun JANG ; Chang Jeun OH ; Kyung Sool KWON ; Moon Bum KIM
Korean Journal of Dermatology 2000;38(5):669-673
No Abstract Available.
Hyperpigmentation*
9.Cytogenetic study on 37 patients with Down syndrome.
Hye Young KIM ; Sung Woon CHANG ; Kwang Hee PARK ; Bo Hoon OH
Korean Journal of Obstetrics and Gynecology 1993;36(7):1084-1089
No abstract available.
Cytogenetics*
;
Down Syndrome*
;
Humans
10.Cytogenetic Study on Chromosome Aberration in Children.
Chong Woo BAE ; Chang Il AHN ; Bo Hoon OH ; Kap Soon JU
Journal of the Korean Pediatric Society 1987;30(6):633-639
No abstract available.
Child*
;
Chromosome Aberrations*
;
Cytogenetics*
;
Humans