Due to the great deal of effort that has gone into the study of osteoclastic differentiation and activation over the last few decades, the mechanisms of these two events have been discovered gradually. Nitric oxide(NO-), which is produced from arginine by a nitric oxide synthase, opened up a new area of biological research. Recently, it has been reported that NO- is produced by osteoblasts stimulated by lipopolysaccharide and several other cytokines. In this study, the effect of sodium nitroprusside(SNP), a donor of nitric oxide(NO-), on osteoclast-like cell formation and on mature osteoclast function was examined. To determine the mechanism of the inhibitory effects of SNP decreased not only the basal 45Ca release but also thee bone resorption induced by PTH and l,25-dihydroxyvitamin D3 (I ,25[OH]2D3). The inhibitory effect of SNP on bone resorption induced by PTH appeared 2 days after treatment, whereas SNP effect on inhibiting bone resorption induced by l,25[OH]2D3 appeared at the third days. When chicken and rat osteoclasts were cultured on dentin slices, treatment of 300micronM SNP resulted in a significant decrease in dentin resorption by osteoclasts in terms of total resorption area and average individual area. We also examined the effect of SNP on formation of osteoclast-like cells that is TRAP-positive multinucleated cells from chicken and rat bone marrow cells in the presence or absence of 10(-8)M l,25[OH]2D3. The addition of 300 micronM SNP inhibited the formation of TRAP-positive multinucleated cells. The present data suggest that SNP, possibly as a NO- donor, inhibits the osteoclastic differentiation and osteoclastic activity.
Animals ; Arginine ; Bone Marrow Cells ; Bone Resorption ; Chickens ; Cytokines ; Dentin ; Humans ; Nitric Oxide Synthase ; Nitroprusside* ; Osteoblasts ; Osteoclasts* ; Rats ; Sodium* ; Tissue Donors

Many investigators have shown that computer analysis of exercise induced ST segment changes in feasible and valid. This technique should make it possible to achieve uniformity of interpretation. Though myocardial ischemic response, arrhythmia, R wave amplitude and heart rate changes are documented by CASE exactly, blood pressure change, subjective and objective signs are assessed clinicall only. Therefore, both CASE and clinical analysis are demanded for the precise interpretation of GXT. Two hundred and ten patients, aged 22-68 y/o, were evaluated for comparative analysis between CASE and clinical assessment. The following results were obtained; 1) The sensitiivity of CASE to clinical analysis is 70.2%. 2) Among the 40 cases with ST segment-positive response, 24 cases(60%) had a less than 2mm ST depression and 16 cases(40%) had a more than 2mm ST depression. 3) Among the 40 cases with ST segment-positive response, 30 cases(75%) had a increased in R wave amplitude of 2.8mm in average, while among the 153 cases with GXT-negative response, 61 cases(39.9%) had R wave increase of 1.5mm in average. 4) Increment of systolic blood pressure per MET was 5.6 mmHg. There was no significant difference by age.
Arrhythmias, Cardiac ; Blood Pressure ; Depression ; Heart Rate ; Humans ; Research Personnel

No abstract available.
Female ; Pregnancy ; Pregnancy, Ectopic*

To evaluate the reproducibility of the Ambulatory Electrocardiography (AECG), we examined the consistency rates of premature beats between the baseline AECG's and the repeat AECG's in 23 patients who underwent AECG's times within 1 year. 12 patients were male and 11 patients were female. Their mean age was 48 years. (Range ; 20 years-75 years) The time interval between both AECG's was 1 month 20 days. (Range ; 1 day-9months) They did not take any antiarrhythmic druge during the observation period except 4 patients who were taking calcium channel blockers or beta receptor blockers for hypertensive heart disease or ischemic heart disease. The consistency rate of both frequency and complexity of ventricular premature beats was 52%. The consisency rate of both frequency and complexity of supraventicular premature beats was 35%. These consistency rates seemed to vary as the time interval between both AECG's differed. In the case of ventricular premature beats, the consistency rates of 1 day, 8 days and 5 months as the time interval were 100%, 38% and 14% respectively. In the case of supraventricular premature beats, the consistency rates were 50%, 25% and 29%. We concluded that the reproducility of the AECG was low and this reproducibility became lower as the time interval between both AECG's became longer and that hese facts had to be considered when the effect of the antiarrhythmic drugs was evaluated.
Anti-Arrhythmia Agents ; Calcium Channel Blockers ; Cardiac Complexes, Premature ; Electrocardiography, Ambulatory* ; Female ; Heart Diseases ; Humans ; Male ; Myocardial Ischemia

The utility of computed axial tomography(CAT) in the diagnosis of spinal disorders has been the subject of considerable interest since the introduction of CAT scanning. Computed tomographic guided needle biopsy of 12 consecutive patients with a variety of undermined spinal disorders resulted in a 100% yield of positive tissue diagnoses, without signlficant complications. The principal advantage of cat guidance is the continuous direct observation of the needle tip position in relation to the target volume. We think that the application of computed tomographic guided needle biopsy in the lesions of the spine is of great value, because it is the single most accurate method of obtaining diagnosis other than by open surgical biopsy.
Animals ; Biopsy ; Biopsy, Needle ; Cats ; Diagnosis ; Humans ; Methods ; Needles ; Spine

A clinical study of the Tibial Shaft fracture was made on 128 patients, who had been treated at the Department of Orthopedic Surgery, College of Medicine Kyung Hee Universlty from the October, 1971 to May, 1979. The results were as follows: 1. The rate of fracture union was accelerated under the age of 20 years but it was slow in aged group. 2. The poor prognosis of fracture union was shown in junction between middle and distal 1/3 than others. 3. The better prognosis of the fracture type was shown in oblique and spiral fracture than in the comminuted and segmental. 4. There was prolonged rate of union in case of associated fibula fracture. 5. The frequency of delayed and nonunion were more prevalent in open fracture. 6. Among the open comminuted tibial shaft fracture with skin and soft tissue loss, the good results was obtained by the Hoffmanns external skeletal fixation method.
Classification ; Clinical Study ; Fibula ; Fracture Fixation ; Fractures, Open ; Humans ; Methods ; Orthopedics ; Prognosis ; Skin

It has been emphasized that treatment of hemoral neck fracture is early anatomical reduction and rigid internal fixation to reduce severe complications such as avascular necrosis or non-union.Operative treatment were developed recently with development of radiological technique. This study reviewed twenty-nine patients of femoral neck fracture treated by internal fixation between December 1973 and December 1979. There are eleven casesof Garden's stage I or II fracture with multiple Knowles pinning and eighteen cases (All Gardens stage) treated with compression hip screw, and followed for a minimum of nine months with an average eighteen months. The results were as follows; 1. Eleven cases with minimal displaced fracture (Garden's stage I or II) treated by multiple Knowles pinning were revealed good results. 2. In total eighteen cases treated by compression hip screw, nine cases (Garden's stage I or II) were revealed good results and other nine cases (Garden's stage I or II) were revealed fair or poor results. 3. Eleven cases of mlutiple Knowles pinning and nine case of compressian hip screw used for undisplaced fracture (Garden's stage I or II) were revealed good results without regard to internal fixation devices. 4. Avascular necrosis were four cases in nine cases(44%) of displaced fracture. 5. Non-union were not found in this aeries.
Agriculture ; Femoral Neck Fractures ; Femur Neck ; Hip ; Humans ; Internal Fixators ; Neck ; Necrosis

BACKGROUND: Limited ischemic tolerance of the lung has remained one of the factors that limits the expansion of pulmonary transplantation as a treatment for end-stage pulmonary disease. Numerous studies on safe long term preservation for lung transplantation has been performed for the purpose of developing ideal preservation solution with extracellular type or intracellular type solutions. In this study, we examined the efficacy of LPDG solution in lung preservation longer than 20 hours by comparison with modified Euro-Collins solution. METHODS: Thirty-four adult mongrel dogs were divided into two groups. Donor lungs were flushed with LPDG solution(n=9) or modified Euro-Collins(MEC) solution(n=8) and stored for 24 hours at 10degrees C. All donor lungs were perfused through the pulmonary arteries with solutions containing prostaglandin E1 and verapamil. Left canine lung allotransplantations wereperformed. Assessment(hemodynamic indices and arterial blood gas analysis) of left implanted lung was made by occluding the right pulmonary artery for ten minutes using pulmonary artery Cuff. Assessment was repeated at the interval of 30 minutes, one hour, and two hours later after reperfusion and then chest X-ray, computed tomogram and lung perfusion scan were obtained. In survival dogs follow-up studies were done with assessment with chest X-ray, computed tomogram of the chest and lung perfusion scan on 7th day postoperatively. After preservation above 20 hours, pathological examinations for ultrastructural findings on right lung were performed in each group. RESULTS: With respect to arterial oxygen tension, LPDG group was superior to MEC but there was no statistical significance for 2 hours after reperfusion. Mean pulmonary artery pressure was less increased(p<0.05) and cardiac output higher(p<0.05) than MEC group until 2 hours after reperfusion. After 2 hours of reperfusion, both groups showed transplanted lung function deteriorated gradually. Perfusion scan of the transplanted lung in LPDG group showed better perfusion rate in immediate post-reperfusion, 3 days and 7 days later respectively but there was no statistical significance and corelation with PaO2 and computed tomographic views. In scanning electron microscopy of pulmonary artery after preservation, LPDG group relatively shows less irregular protrusion of the inner surface of endothelial cell of poulmonary artery than MEC group. CONCLUSIONS: We concluded that LPDG solution can offer safe lung preservation above 20 hours with adequate immunosuppressive therapy and prevention of the infection.
Adult ; Alprostadil ; Animals ; Arteries ; Cardiac Output ; Dogs ; Endothelial Cells ; Follow-Up Studies ; Humans ; Lung Diseases ; Lung Transplantation ; Lung* ; Microscopy, Electron, Scanning ; Organ Preservation ; Oxygen ; Perfusion ; Pulmonary Artery ; Reperfusion ; Thorax ; Tissue Donors ; Verapamil

A 77-year-old woman with chronic renal failure and malnutrition had thick crusted plaques, erythematous papules and scaly patches on her entire body. The skin scraping and exfoliated skin scales showed the presence of numerous itch mites, Sarcopbes scabiei var horriums 8667 mites were counted from Ig of the collected samples. Twenty six cases a pruritic rash were reported among hospital personnel: mites were recovered from only one. Among other hospitalized patients, 2 cases of scabies were reported. One patient had pruritic papules and burrows on the left upper arm and the other had lesions in the axilla, mites were recovered from both. Subsequent evaluation suggested that they acquired scabies from a contaminated blood pressure monitoring cuff and a clinical thermometer. The contaminated medical instruments are considered to be fomites, a mode of dissemination of mites.
Aged ; Arm ; Axilla ; Blood Pressure Monitors ; Exanthema ; Female ; Fomites ; Humans ; Kidney Failure, Chronic ; Malnutrition ; Mites ; Personnel, Hospital ; Scabies* ; Skin ; Thermometers ; Weights and Measures

Three groups of healthy adults were premedicated with diaxepam or secobarbital and anesthetized with propanidid or thiopental. The concentration of serum potassium wes measured before induction and after succinylchaline iodide administration. The increases of potassium in diazepam-thiopental, diaxepam-propanidid and secobarbital propanidid groups were 0. 14, 0. 06, and 0. llmEq/L (3. 29, l. 38 and 2. 58%) respectively. Serum potassium changes were least in diazepam-propanidid group, but there were no significant differences among the 3 groups. The choice of induction agent is of importance for the changes in serum potassium which follow the subsequent injection of succinylcholine iodide. For instance, intravenous induction by barbiturate is followed by a lesser increase in serum potassium after succinylcholine injection than induction by halothane. As barbiturates are so commonly used as intravenous induction agents, we chose thiopental and succinylcholine iodide as standard with which to compare the other induction agents, propanidid and succinylcholine iodode. And also, we wanted compare two premedicants, secobarbital and diaepam. The results were as follows: (1) The thiopental-succinylcholine iodide group and the propaaidid-succinylcholine iodide group revealed no significant differences in serum potassium level. (2) There was a lesser increase in serum potoassium level after premedication with diazepam than premedicstion with secobarbital in the propanidid-succinylcholine iodide group. (3) Induction by propanidid succinylcholine iodide and premedication by diazepam are recommendable for least increasing the serum potassium level.
Adult ; Barbiturates ; Diazepam ; Halothane ; Humans ; Potassium* ; Premedication ; Propanidid ; Secobarbital ; Succinylcholine ; Thiopental