1.Anatomical atudy of the olfactory bulb in the cat.
Moo Ho WON ; Heung Shik LEE ; Wol Bong CHOI
Korean Journal of Anatomy 1992;25(2):117-127
No abstract available.
Animals
;
Cats*
;
Olfactory Bulb*
3.Stomal Complications in Infants and Children.
Si Youl JUN ; Hyun Sheol CHOI ; Seok LEE ; Keuk Won JEONG ; Woo Shik CHUNG
Journal of the Korean Society of Coloproctology 1998;14(2):299-304
We performed this study to analyse the morbidity and mortality of stoma formation in infants and children over a 17-year period. Thirty-seven stoma formations were performed in 37 patients: 21 for anorectal malformation, 9 for Hirschsprung's disease, 3 for necrotizing enterocolitis, 2 for multiple ileal atresia, 1 for volvulus neonatorum with perforation, and 1 for diaphragmatic hernia with colon perforation. There were 26 boys and 11 girls with a mean age of 0.4 years. Complications after stoma formation were encountered in 12 patients(32.4%) and included stomal prolapse, stenosis, retraction, dysfunction, skin excoriation and parastomal hernia. Four patients(10.8%) required stomal revision. The incidence of complications was neither related to the age nor to the primary indication for the stoma formation, but sigmoid colostomy was associated with a lower complication rate compared to transverse colostomy(22.1% versus 42.1%, P<0.05). Five patients died, but only one(2.7%) was dead, which was directly related to stoma formation. Eighteen of these children subsequently underwent stoma closure which was associated with complications in six patients(33.3%). The most common complication after stoma closure was wound sepsis in 4 children. In conclusion, because the significant morbidity of stoma formation still exists the refinements in surgical technique may help in reducing the incidence of complications and a sigmoid loop colostomy should be used whenever possible.
Child*
;
Colon
;
Colon, Sigmoid
;
Colostomy
;
Constriction, Pathologic
;
Enterocolitis, Necrotizing
;
Female
;
Hernia
;
Hernia, Diaphragmatic
;
Hirschsprung Disease
;
Humans
;
Incidence
;
Infant*
;
Intestinal Volvulus
;
Mortality
;
Prolapse
;
Sepsis
;
Skin
;
Wounds and Injuries
4.Antibacterial Effect of Polyphosphates on Porphyromonas gingivalis.
Eu Gene CHOI ; Hong Yeoul KIM ; Jin Yong LEE ; In Shik CHOI ; Byung Lae PARK ; Je Won SHIN ; Yeong Chul CHOI
Journal of the Korean Society for Microbiology 1999;34(3):285-301
Porphyromonas gingivalis is strongly implicated in the pathogenesis of adult periodontitis, the major cause of tooth loss in adults. Use of an antibacterial agent controlling P. gingivalis as a periodontal therapeutic agent has been rationalized. The present study was performed to observe the antibacterial effect of inorganic polyphosphates (polyP) on P. gingivalis. P. gingivalis 2561 was grown in half-strength brain-heart infusion broth containing hemin and vitamin K with or without polyP. Minimal inhibitory concentration (MIC) of polyP with various chain lengths was determined by measuring the absorbance of the grown cells at 540 nm. MIC of polyP for the bacterium was determined to be 0.05%. The effect of polyP with a chain length of 75 (polyP 75) was further examined. PolyP 75 added to the growing culture of P. gingivalis at its exponential phase was as effective in inhibiting the growth of P. gingivalis as polyP 75 added at the very beginning of the culture. More than 99% of the cells lost their viability determined by viable cell count when polyP 75 was added to the culture of growing P. gingivalis at the concentration of 0.06%, suggesting that polyP 75 has a bactericidal effect on the bacterium. Intracellular nucleotide release from the cells was increased by approx. 20% in the presence of polyP 75 but was not reversed by the addition of divalent cations like Ca++ and Mg++. Under the transmission electron microscope, only a small number of the growing P. gingivalis cells were actually lysed. However, the majority of the cells appeared to be atypical in their shape, demonstrating accumulation of highly electron-dense granules and bodies of condensed nucleic acid-like material in the cytoplasm. In the presence of polyP 75, the protein profile of P. gingivalis was changed as determined by SDS-polyacrylamide gel electrophoresis and immunoblot, and the proteolytic activity of the bacterium demostrated on the zymograms was decreased. The overall results suggest that polyP have a strong bactericidal activity against P. gingivalis in which lysis in relation to chelation may not play the major role but unknown mechanism that possibly affects the viability of the bacterium may be involved. PolyP may be used as an agent for prevention and treatment of periodontitis.
Adult
;
Cations, Divalent
;
Cell Count
;
Chronic Periodontitis
;
Cytoplasm
;
Electrophoresis
;
Hemin
;
Humans
;
Periodontitis
;
Polyphosphates*
;
Polyps
;
Porphyromonas gingivalis*
;
Porphyromonas*
;
Tooth Loss
;
Vitamin K
5.The Effects of Transforming Growth Factor beta1 on Apoptosis in Rat Hepatocellular Carcinoma.
Young Euy PARK ; Young Hee CHOI ; Won Yo LEE ; Jin Ja PARK ; Kyung Chan CHOI ; Hyung Shik SHIN
Korean Journal of Pathology 1999;33(2):71-79
Based upon the concept that carcinogenesis is associated with apoptosis, specific therapies designed to enhance the susceptibility of cancer cells to undergo apoptosis could be developed. Thus, in this paper, it was designed to investigate whether, using rat animal model with chemical-induced hepatocellular carcinoma, TGF-1 in vivo could induce apoptosis in cancer. The chemical hepatocarcinogenic procedure of Solt-Farber method was used on Sprague-Dawley rats. Experimental groups were divided into group A treated with the standard Solt-Farber regimen of diethylnitrosamine (DEN) and 2-Acetaminofluorene (AAF), group B TGF-, group C TGF-1, and group D adriamycin after hepatocellular carcinoma developed. For detection of apoptotic cells, apoptotic indices were examined by the in situ end DNA labelling method. The expression of proliferating cell nuclear antigen was examined by immunohistochemical staining. Apoptosis of rat hepatocellular carcinoma cells increased significantly to 4.92+/-2.32/HPF in the group C compared with the control group (A) (2.54+/-1.13/HPF; P<0.05). Two distinctly different populations of proliferating hepatocellular carcinoma cells were identified. The cells at G1/S boundary (weak granular staining) increased to 15.75+/-6.19/HPF and 6.45+/-2.93/HPF in the groups C and D, respectively, but decreased to 2.42+/-2.06/HPF in the group B compared with the control group (A) (6.38+/-2.18/HPF; p<0.05). The cells at S phase (strong granular staining) increased to 3.37+/-2.69/HPF in the group B but decreased to 0.32+/-0.47/HPF in the group D (p<0.05). In conclusion, these results indicate that the TGF-1 may be used as an effective anticancer agent.
Animals
;
Apoptosis
;
Carcinogenesis
;
Carcinoma, Hepatocellular*
;
Diethylnitrosamine
;
DNA
;
Doxorubicin
;
Models, Animal
;
Proliferating Cell Nuclear Antigen
;
Rats*
;
Rats, Sprague-Dawley
;
S Phase
;
Transforming Growth Factor alpha
;
Transforming Growth Factor beta1*
;
Transforming Growth Factors*
6.Clinical Observation on Antihypertensive Effect of Indapamide(Fludex(R)).
Dae Won SOHN ; Byung Hee OH ; Young Bae PARK ; Yun Shik CHOI ; Jung Don SEO ; Young Woo LEE
Korean Circulation Journal 1988;18(3):447-453
The antihypertensive effect of Indapamide(Fludex(R)) was studied in 31 patients of essential hypertension and following results were obtained. 1) Daily dosage was 1mg b.i.d. and total duration of medication was weeks. 2) Mean systolic and diastolic blood pressure declined by 23mmHg(14%) and 18mmHg(17%) respectively. 3) Good or fair controls were achieved in 78% of patients. 4) There was no significant change in heart rate during and after treatment. 5) There were no significant changes in fasting blood sugar, serum creatinine, K+, uric acid, ca++, transaminase and cholesterol levels before and after treatment. 6) In 5 patients transient side effects were observed which resolved spontaneously. In view of these results Indapamide appears to be effective agent for the treatment of mild to moderate hypertension and dose not cause significant change in blood chemistry.
Blood Glucose
;
Blood Pressure
;
Chemistry
;
Cholesterol
;
Creatinine
;
Fasting
;
Heart Rate
;
Humans
;
Hypertension
;
Indapamide
;
Uric Acid
7.Electrophysiologic and long-term effects of propafenone on paroxysmal supraventricular tachycardia.
Yun Shik CHOI ; Dae Won SOHN ; Myoung Mook LEE ; Young Bae PARK ; Jung Don SEO ; Young Woo LEE
Korean Circulation Journal 1993;23(3):440-447
BACKGROUND: Propafenone is a new class IC antiarrhythmic drug that has been found to be effective in both supraventricular and ventricular tachyarrhythmias. We studied the electrophysiologic and long-term effects of oral propafenone in the patients with paroxysmal supraventricular tachycardia(PSVT). METHODS: The electrophysiologic study was done in 15 patients with PSVT to assess the short-term efficacy of propafenone 450mg daily. For 10 patients with short-term efficacy, follow up study was done to assess the long-term efficacy of propafenone 450mg daily. RESULTS: The electrophysiologic mechanisms of PSVT were AV nodal reentry in 6 patients and AV reentry in 9 patients. During the electrophysiologic study, propafenone prolonged AH, HV and PR intervals significantly(p<0.05), but did not change the corrected SNRT, SACT, and the ERP of atrium, ventricle, AV node and accessory pathway(AP) significantly. The anterograde and retrograde 1:1 conduction capacity of AV node and AP seemed to decrease. Complete block of anterograde conduction over the AP was noted in 2 of 3 patients with manifest WPW syndrome and complete block of retrograde conduction was noted over the AV node in 1 patient with AV nodal reentry and over the AP in 1 patient with AV reentry. Propafenone was effective in 3 of 6 patients with AVNRT and 7 of 9 patients with AVRT. During long term administration for 3 to 11 months in 10 patients with short-term efficacy of propafenone, 7 patients did not report any episode of symptomatic tachycardia and 3 patients reported less frequent palpitation. There were no side effects during short-and long-term follow up except 2 patients with mild indigestion. CONCLUSIONS: Propafenone seems to be a safe, well tolerated and effective drug for short and long-term therapy of patients with PSVT, especially of orthodromic AV reentry.
Atrioventricular Node
;
Dyspepsia
;
Follow-Up Studies
;
Humans
;
Propafenone*
;
Tachycardia
;
Tachycardia, Supraventricular*
;
Wolff-Parkinson-White Syndrome
8.A Case of Hemophilus Paraphrophilus Endocarditis with Cerebral Embolism and Hemorrhage.
Kyong Hoon YOU ; Sang Hun KIM ; Hee Jung CHOI ; Myoung Don OH ; Dae Won SOHN ; Eui Chong KIM ; Yun Shik CHOI ; Kang Won CHOE
Korean Circulation Journal 1998;28(4):642-646
Infective endocarditis by Hemophilus species is very rare:there are only 22 reported-cases of Hemophilus paraphrophilus endocarditis. We report a case of Hemophilus paraphrophilus endocarditis in a middle-aged woman with cerebral embolism and hemorrhage.
Endocarditis*
;
Female
;
Haemophilus
;
Haemophilus paraphrophilus*
;
Hemorrhage*
;
Humans
;
Intracranial Embolism*
9.Positional Asphyxia of the Paralyzed: Implicated on the View of Death Scene.
Youn Shin KIM ; Dal Won KIM ; Young Shik CHOI ; Won Tae LEE
Korean Journal of Legal Medicine 2004;28(2):61-63
Positional or postural asphyxia, which is clodely allied to traumatic asphyxia, means a fatal condition causing mechanical interference with pulmonary ventilation resulting from the adoption of particular body positions. To distinguish it from other form of asphyxia may be extremely difficult and therefore we need a full information about death scene and victim's history. The authors had experienced a case of putried corpse who had a history of paraplegia caused by traffic accident several years ago and he was found dead in trapped between bed and opened door of refrigerator. The autopsy finding was negative because of decomposition and toxicology was also negative. We will emphasize on the importance of finding of death scene.
Accidents, Traffic
;
Asphyxia*
;
Autopsy
;
Cadaver
;
Paraplegia
;
Pulmonary Ventilation
;
Toxicology
10.In vitro effects of some antifungal agents on the chemotaxis and phagocytosis response of human neutrophils.
Jung Hyun CHOI ; Yang Rhee KIM ; Dong Heon KANG ; Won Oh CHOO ; Si Young YANG ; Wan Shik SHIN ; Moon Won KANG
Korean Journal of Infectious Diseases 1991;23(4):265-270
No abstract available.
Antifungal Agents*
;
Chemotaxis*
;
Humans*
;
Neutrophils*
;
Phagocytosis*