Many factors exert an influence on enzyme activity and thus on the rate of reactions that they catalyse. The most important of these factors are pH, temperature, substrate concentration, and the concentration of some inhibitors present. A solution of the enzyme diastase, which breaks down molecules of the polysaccharide starch to the disaccharide maltose by hydrolysis, was provided. Activity of these enzyme was measured by the rate at which starch was removed from the reaction mixture. These experiments were designed to study this reaction rate under varying conditions and the following results were obtained. 1. The range of optimum pH for this enzyme at room temperature was 4.0-7.0 and the optimum pH was 5.0. 2. The range of optimum temperatures for this enzyme at pH 7.0 was 30-50 degrees C and the optimum temperature was 40 degrees C. 3. The relationship between the enzyme activity and substrate concentration could be expressed by the Michaelis-Menten equation. The limiting velocity of these enzyme at room temperature and pH 7.0 was 415 microgram starch removed/ml of reaction mixture/min and Km, Michaelis constant, was 343 microgram/ml. 4. Inhibitors NaCl and HgCl2 blocked this enzyme activity completely at 1% and 0.01% respectively.
Amylases* ; Hydrogen-Ion Concentration ; Hydrolysis ; Maltose ; Mercuric Chloride ; Starch ; Water*

No abstract available.
Gerbillinae* ; Vestibular Nuclei*

Objective: To examine the effects of Tribulus terrestris L. (T. terrestris) extract on the modulation of calcium channels to evaluate its use in topical agents for treatment of atopic dermatitis. Methods: The 70% methanol extract of T. terrestris was prepared. Human HEK293T cells with over-expressed calcium release-activated calcium channel protein 1 (Orai1), transient receptor potential vanilloid 1, or transient receptor potential vanilloid 3 (TRPV3) were treated with T. terrestris extract. Modulation of ion channels was measured using a conventional whole-cell patch-clamp technique. Results: T. terrestris extract (100 mg/mL) significantly inhibited Orai1 activity in Orai1-stromal interaction molecule 1 co-overexpressed HEK293T cells. In addition, T. terrestris extract significantly increased the TRPV3 activity compared with 2-Aminoethyl diphe-nylborinate (100 mmol/L), which induces the full activation of TRPV3. Conclusions: Our results suggest that T. terrestris extract may have a therapeutic po-tential for recovery of abnormal skin barrier pathologies in atopic dermatitis through modulating the activities of calcium ion channels, Orai1 and TRPV3. This is the first study to report the modulatory effect of a medicinal plant on the function of ion channels in skin barrier.

No abstract available.
Humans ; Infant* ; Leukemia, Megakaryoblastic, Acute* ; Sarcoma, Myeloid*

In the present study, we have tried to isolate and identify herpes simplex virus type 2(HSV 2) from clinical specirnens, which were inoculated into Vero cell line and grown. Eight strains of viruses were isolated from 20 suspected cases diagnosed from the pr ivate clinics in Seoul. Viruses isolated from 4 rnale and 1 female cases with active lesion were identified to the HSV 2 by indirect immunofluorescence using monoclonal antibody to HSV-2. In addition, morphology of the isolated viruses were observed under electron microscope.
Female ; Fluorescent Antibody Technique, Indirect ; Herpes Simplex* ; Herpesvirus 2, Human* ; Humans ; Seoul ; Simplexvirus* ; Vero Cells

A patient had total occlusion of the left main coronary artery that was proved by coronary arteriography. Patients with total occlusion of the left main coronary artery have a varying clinical presentation and may have prolonged survival. In patients with good collaterals, left ventricular function may be preserved. This report reveiws the clinical and angiographic findings of a patient with occlusion of the left main coronary artery with symptoms of unstable angina pectoris but without congestive heart failure or EKG evidence of myocardial infarction.
Angina, Unstable ; Angiography ; Coronary Vessels* ; Electrocardiography ; Heart Failure ; Humans ; Myocardial Infarction ; Ventricular Function, Left

BACKGROUND: Management of massive rotator cuff tears can be challenging because of the less satisfactory results and a higher retear rate regardless of the use of open or arthroscopic repair technique. METHODS: We retrospectively analyzed 102 cases of massive rotator cuff tear treated with either open or arthroscopic repair. Open repair was performed in 38 patients; and arthroscopic repair, in 64 patients. The mean age at the time of surgery was 59.7 years in the open group and 57.6 years in the arthroscopic group. RESULTS: The Constant score increased from the preoperative mean of 55.9 to 73.2 at the last follow-up in the open repair group and from 53.8 to 67.6 in the arthroscopic repair group (p<0.001 and <0.001, respectively). The University of California at Los Angeles (UCLA) score increased from a preoperative mean of 17.7 to 30.8 at the last follow-up in the open group and from 17.5 to 28.7 in the arthroscopic group (p<0.001 and <0.001, respectively). No statistically significant difference in the Constant and UCLA scores was observed between the two groups at the last follow-up (p=0.128 and 0.087, respectively). Retear was found in 14 patients (36.8%) in the open group and 39 patients (60.9%) in the arthroscopic group (p=0.024). CONCLUSIONS: Open and arthroscopic repairs of massive rotator cuff tears may provide satisfactory clinical results with no significant difference. However, a significantly lower retear rate was observed for the open repair group compared with the arthroscopic repair group.
Arthroscopy ; California ; Follow-Up Studies ; Humans ; Retrospective Studies ; Rotator Cuff* ; Shoulder ; Tears* ; Tendon Injuries

We examined 984 objects for exercise stress test, using CASE I(computer assisted system for exercise). They exercised according to Bruce's protocol, Among them, the mal were 613 and the female were 371. (Male:Female;17:1) The 5th and 6th decades occupied 61% of total objects. The purpose of test was evaluation of chest pain in 84% of total cases. The most frequent end point of test was dyspnea(42%) and chest pain was observed in 13% of total cases. Most of all objects above 8-9 METS. Positive results of exercise stress tert were obtained in 23%. As complications, ventricular tachycardia occurred in 7 cases, supraventricular tachycardia; 8, high degree VPB's; 6, sudden cardiovascular collapse;15, The complication rate was 0.36% but morbidity and mortality were 0. All complicated cases recoved spontaneously only by rest.
Chest Pain ; Electrocardiography* ; Exercise Test ; Female ; Humans ; Mortality ; Tachycardia, Supraventricular ; Tachycardia, Ventricular

BACKGROUND: We assessed the effectiveness of arthroscopic capsular release for the treatment of adhesive capsulitis. Further, we tried to ascertain the clinical benefits, if any, of pancapsular release over selective capsular release, where the two differ by performing or not performing a posterior capsular release, respectively. METHODS: Thirty-five consecutive patients with either primary or secondary adhesive capsulitis who failed conservative treatment for more than 6 months were enrolled in the study. A total of 16 patients allocated in group 1 received a pancapsular release that comprises the release of the rotator interval, anteroinferior capsular, and the posterior capsular release, whereas 19 patients in group 2 received a selective capsular release that comprises only the release of the rotator interval release and anteroinferior capsular release. The clinical outcomes, visual analogue scale (VAS) score, Constant score, and range of motion, were assessed preoperative and postoperatively. RESULTS: In both groups, the preoperative VAS score, Constant score, and ROM showed a significant improvement by the 6-month follow-up. We found that the immediate postoperative internal rotation was significantly higher in group 1 than group 2. Despite significant differences seen between the two groups at the initial postoperative period, there were no significant differences in Constant score, VAS score, and the ROM at all the subsequent follow-ups between the two groups. CONCLUSIONS: Arthroscopic capsular release for the treatment of adhesive capsulitis is very effective. However, pancapsular release did not show any advantage over selective capsular release in terms of overall clinical outcome.
Bursitis* ; Follow-Up Studies ; Humans ; Joint Capsule Release* ; Postoperative Period ; Range of Motion, Articular

Twenty four hyperlipidemic patients, consist of 13 males and 11 females, were administration a new hypolipidemic agents, Pantethine, and blood lipid level were checked sereally for 16 weeks. The following results are obtained. 1. The serum high density lipoprotein-cholesterol are markedly increased by 11.8%. 2. The serum cholesterol level are reduced mildly by 4.8% & it seems to be insignificant. 3. The serum triglyceride level are moderately reduced by 10.7%. 4. In 11 female patients, pantethine are more than effect on male patients. 5. Pantethine has been well tolerated in most patients. With a consideration of remakable safety, it is promising that pantethine are effective in reducing cholesterol, Triglyceride and increasing high density lipoprotein-cholesterol level.
Cholesterol ; Female ; Humans ; Hypolipidemic Agents ; Male ; Triglycerides