1.The effect of recombinant human growth hormone(rhGH) on the growth in children with chronic renal failure.
Sei Won YANG ; Yong CHOI ; Hyung Ro MOON
Journal of Korean Society of Endocrinology 1993;8(2):157-163
No abstract available.
Child*
;
Humans*
;
Kidney Failure, Chronic*
2.Radiological evaluation of cortical rim sign of the kidney
Yea Seong YOUN ; Seung Moon YANG ; Ki Chul CHOI
Journal of the Korean Radiological Society 1983;19(4):837-843
The rim sign in renovascular compromise may be defined as a thin nephrographic rim outlinning a kidney with another wise faint nephrogram. Renal infarction with gelform and blood clots was induced experimentally in 5 dogsand high dose IVP and CT were performed to evaluate renal cortical rim sign after renal infarction. One expireddue to anesthetic technical failure, and one was embolized partially. So we could be obtain the result on 3 dogs.The reults were as follows; 1. The high dose IVP films show cortical rim sign on 24 hrs and 72 hrs films in twodogs. The CT films show rim sign in 3 dogs. 2. The rim sign may be visualized, if the renal artery is occuludedenough to drop perfusion presssure below the authoregulatory range. 3. The high dose IVP and early nephrogramphase are necessary for the rim sign.
Animals
;
Dogs
;
Infarction
;
Kidney
;
Perfusion
;
Renal Artery
3.Electromechanical and Bioelectrical Charateristics of Fracture Healing
Moon Sik HAHN ; Do Young LEE ; Yang KIM ; Song CHOI
The Journal of the Korean Orthopaedic Association 1981;16(3):512-517
It is widely blieved that the new bone formation is provoked by fine electrical stress to bone. There have been maay experimental studies that showed much efforts to define these small amounts of electricity, and these fine electricities are being used in the orthopedic field for the treatment of various fractures, nonunions and pseudsrthrosia The auther has checked the electrical potentials changing in the course of fractvre hesling in rabbits femur. Comparing these data with that of the normal control group, the following results were obtained. 1. In the normal rabbit's femur the electrical potentisl was 13.6mV less on the concave side than on the convex side. This finding can be explained by the existence of stress generated potential or piexoelectricity. 2. Electrcal potentials on the fractured femoral sites were lowered significantly from that of the control group. So auther could confirm the existence of bioelectrical generated by increased electrical activity of the living bone. 3. The electrical potential of the fractured femoral site has been decreased 50% and 20% as low as that of the normal site at 8 weeks respectively. It is expected that these lowered electrical potentials may become dose to the normal values when the changed metabolic process due to the fractured bone is no longer functioning and it is believed to take human 2 years to get the normal value.
Electricity
;
Femur
;
Fracture Healing
;
Humans
;
Metabolism
;
Orthopedics
;
Osteogenesis
;
Rabbits
;
Reference Values
4.Three cases of acute lobar nephronia in children.
Moon Sun YANG ; Yun Ho CHOI ; Yong CHOI ; Kwang Wook KO ; In Won KIM ; Kyung Mo YEON ; Whang CHOI
Korean Journal of Nephrology 1991;10(2):234-239
5.A Case of Meningioma in Temporo-occipital Lobe without Dural Attachment in a 14-yer-old Girl: Case Report.
Yang Moon CHOI ; Tae Young KIM ; Jong Moon KIM
Journal of Korean Neurosurgical Society 1996;25(5):1101-1107
Meningiomas are thought to arise from the arachnoid cap or meningothelial cells. This frequent apposition to the dura mater probably accounts for the usual attachment of the neoplasm to this layer. We report a case of intraparenchymal meningioma without dural attachment in a 14-year-old girl. A survey of the literature reveals that the majority of cases of meningiomas without dural attachment occur either in children or below the tentorium, and most of them located in the ventricle, the cranial vault. Intraparenchymal meningioma without dural attachment, however, are extremely rare. The uncommon locations of meningiomas at sites distant from the duramater is believed to reflect the rare occurrence of arachnoid cap cells in the Virchow-Robin spaces along the cerebral vasculature or in the pial layers distant from the dura mater.
Adolescent
;
Arachnoid
;
Child
;
Dura Mater
;
Female*
;
Humans
;
Meningioma*
6.Clinical Parameters Associated with Vasospasm in Early-Operated Aneurysmal Subarachnoid Hemorrhage.
Yang Moon CHOI ; Tae Ahn JAHNG ; Sung Don KANG ; Jong Moon KIM
Journal of Korean Neurosurgical Society 1995;24(12):1504-1509
Much controversies still exist with respect to the risk factors influencing symptomatic cerebral vasospasm. In our study, the patient group had some unique characteristics, ie.:42.5%(65) of the 153 patients were aged 60 years or older(mean;55.6 years) and consequently the proportion of Hunt-Hess grade 3-5 was higher than grade 1-2(57.5% vs 42.5%). The authors analyzed the relationship between vasospasm and Hunt & Hess grade, Fisher grade, hydrocehalus, age & hypertension among these 153 early operative cases after a 3 year follow up study. The incidence of vasospasm was significantly higher in the Hunt-Hess grade III, IV, V and the Fisher grade III, IV, compared to grade I & II, and also in preoperative hydrocehalus but it was insignificant in old and hypertensive patients. These results suggest initial severe direct insults and complicating preoperative hydrocephalus increase the chance of postoperative symptomatic vasospasm in this older aged, poorer grade study group.
Aneurysm*
;
Follow-Up Studies
;
Humans
;
Hydrocephalus
;
Hypertension
;
Incidence
;
Risk Factors
;
Subarachnoid Hemorrhage*
;
Vasospasm, Intracranial
7.A Comparative Study on MIB-1, AgNORs and PCNA Expressions in Astrocytic Tumors.
Yang Moon CHOI ; Tae Young KIM ; Ki Jung YOON ; Hyung Bae MOON ; Jong Moon KIM
Journal of Korean Neurosurgical Society 1997;26(4):476-485
Cell cycle associated nuclear proteins such as proliferating cell nuclear antigen(PCNA), argyrophilic nucleolar organizer regions(AgNORs) and the family of nuclear proteins identified by the Ki-67 epitope, have been primarily utilized for estimating of growth potential of neoplasms. Although PCNA and AgNORs staining are possible in the paraffin-embedded tissue, Ki-67 staining had been only possible on frozen sections. Recently monoclonal antibody MIB-1 is available, and reacts with the Ki-67 epitope in paraffin-embedded tissue. Twenty eight astrocytic tumors in paraffin-embedded, archival materials were stained by immunohistochemical technique for the MIB-1, PCNA, and by silver colloid stain for AgNORs. The MIB-1 labeling indicies(LI) ranged from 2 to 25%(10+/-7.58) for 10 glioblastomas; from 2 to 15%(7+/-3.74) for 11 anaplastic astrocytomas; and from 1 to 5%(3+/-1.91) for low grade astrocytomas. Glioblastomas and anaplastic astrocytomas exhibited significantly higher MIB-1 LI than their benign counterparts(p<0.05). The AgNORs count per cell ranged from 1.3 to 3.1(1.96+/-0.57) for 10 glioblastomas: from 1.2 to 3.1(1.9+/-0.64) for 11 anaplastic astrocytomas: and from 0.8 to 1.5(1.2+/-0.26) for low grade astrocytomas. Glioblastomas and anaplastic astrocytomas exhibited significantly higher AgNORs count than their benign counterparts(p<0.05). The PCNA LI ranged from 10 to 40%(24.5+/-10.39) for 10 glioblastomas; from 5 to 20%(11.6+/-5.24) for 11 anaplastic astrocytomas; and from 5 to 10%(7.1+/-2.67) for low grade astrocytomas. The differences of PCNA LI between glioblastomas and anaplastic astrocytomas(p<0.01), and between glioblastomas and low grade astrocytomas(p<0. 001) were statistically significant. Linear regression analysis showed correlations between MIB-1 LI and AgNORs count(Spearmans r=0.4306, p<0.05), between PCNA LI and AgNORs count(Spearman's r=0.586, p<0.05) and between PCNA and MIB-1 LI(Spearman's r=0.4523, p<0.05). These findings suggest that LI of MIB-1, PCNA and AgNORs count are correlated each other, and can be used as helpful markers for differentiating astrocytic tumors in addition to conventional staining methods.
Astrocytoma
;
Cell Cycle
;
Colloids
;
Frozen Sections
;
Glioblastoma
;
Humans
;
Linear Models
;
Nuclear Proteins
;
Nucleolus Organizer Region
;
Proliferating Cell Nuclear Antigen*
;
Silver
8.A case of malignant atrophic papulosis.
Dong Hoon SHIN ; Beung Chon MOON ; Jong Soo CHOI ; Ki Hong KIM ; Bo Yang SUH
Korean Journal of Dermatology 1991;29(2):275-279
No abstract available.
Malignant Atrophic Papulosis*
9.Pheochromocytoma in Two 10-year Old Children.
Young Soo KIM ; Young Hoon KIM ; Se Won YANG ; Yong CHOI ; Hyung Ro MOON
Journal of the Korean Pediatric Society 1987;30(2):207-211
No abstract available.
Child*
;
Humans
;
Pheochromocytoma*
10.Clinical study of Outcome and Predisposing Factors for Spontaneous Pneumothorax in the Neonates.
Byung Joo CHOI ; Jo Won JUNG ; Seon Chan BAE ; Moon Sung PARK ; Jeong In YANG
Korean Journal of Perinatology 2000;11(4):438-444
No abstract available.
Causality*
;
Humans
;
Infant, Newborn*
;
Pneumothorax*