No abstract available.
Pharmacology*

No abstract available.
Pharmacology*

No abstract available.
Pharmacology*

No abstract available.
Pharmacology*

To provide the information about overall test reliability and test improvement, we analyzed the first fundamental medical sciences examination at the Kon-Kuk University College of Medicine on August 23, 1997. The results are as follows: 1. The number of the items in the test is 230. The range of the scores is from 32.5 to 61.3(average percentage score: 50.0+/-6.1). Among the 39 students, three(7.7%) passed the examination with percentage scores of higher than 60. 2. The correlation coefficients between the fundamental medical sciences examination and academic records are 0.4682(the first semester in 1st grade), 0.5933(the second semester in 1st grade), and 0.6538(the first semester of 2nd grade), respectively. 3. Among the 230 items, 47(20.4%) are too difficult or too easy. Therefore these items are recommended to be discarded. 4. Among the 230 items, 115(50%) have lower discriminative indices(lower than 0.14) and 55(23.9%) have higher discriminative indices(higher than 0.23). 5. Among the 230 items, overall acceptable items are 101; the range of difficulty is 0.15~0.84 and discriminative indices are higher than 0.15. Good acceptance is shows in pharmacology and microbiology.
Humans ; Pharmacology

No abstract available.
Korea* ; Pharmacology*

No abstract available.
Pharmacology, Clinical

No abstract available.
Pharmacology, Clinical

An absorbable hemostatic material based on polysaccharide was prepared. The concentration of blood cells and coagulation factors was increased by reducing the water content in the blood, so as to reduce the coagulation time and achieve the purpose of rapid hemostasis. The specific surface area of starch was increased by using hydrochloric acid to hydrolyze potato starch, which made it easier to combine with α-amylase and increased the degradation rate. Starch was crosslinked into microspheres by crosslinking agent, which made the particle size uniform and greatly improved the water absorption. The surface modification of crosslinked starch microspheres with carboxymethyl group can further improve the water absorption of hemostatic materials. The results showed that the water absorption rate of our hemostatic material was more than 800%, and the average hemostatic time in the animal model was 138.7s. Compared with the imported products on the market, our hemostatic material have better hemostatic performance.
Animals ; Hemostasis ; Hemostatics/pharmacology* ; Polysaccharides/pharmacology* ; Starch/pharmacology* ; Water/pharmacology*

Sulfur is an essential element for the entire biological kingdom because of its incorporation into amino acids, proteins and other biomolecules. Sulfur atoms are also important in the iron-containing flavoenzymes. Unlike humans, plants can use inorganic sulfur to synthesize sulfur-containing amino acids. Therefore, plants are an important source of sulfur for humans. Sulfur-containing compounds are found in all body cells and are indispensable for life. Some of sulfur-containing antioxidant compounds are, cysteine, methionine, taurine, glutathione, lipoic acid, mercaptopropionylglycine, N-acetylcysteine, and the three major organosulfur compounds of garlic oil, diallylsulfide, diallyldisulfide and diallyltrisulfide. In a comparison of the structure-function relationship among these sulfur-containing antioxidant compounds, dihydrolipoic acid (the reduced form of LA) is the most effective antioxidant. Dihydrolipoic acid contains two sulfhydryl groups and can undergo further oxidation reaction to form lipoic acid. The antioxidative activities of sulfur-containing compounds follow a general trend, the more highly reduced forms are stronger antioxidants and the number of sulfur atoms determine, at least in part, their modulatory activites on the glutathione related antioxidant enzymes. In this article, the antioxidant effects and the antioxidative activities, of sulfur-containing amino acids, are reviewed. In addition, the general antioxidant effects and the structure-function relationship of some sulfur-containing compounds are also reviewed.
Acetylcysteine/pharmacology ; Amino Acids, Sulfur/*pharmacology ; Antioxidants/*pharmacology ; Cysteine/pharmacology ; Glutathione/pharmacology ; Methionine/pharmacology ; Structure-Activity Relationship ; Taurine/pharmacology ; Thioctic Acid/pharmacology ; Thiopronine/pharmacology