Antiahythmic agent
-항부정맥제의 분류, 대표적 약물
Antiahythmic agents: suppress cardiac ahythmia(atrial fibrillation, atrial flutter, ventricular tachycardia, ventricular fibrillation)
a-fib에서 항부정맥제의 사용이 mortality를 증가시키는 문제는 아직 controversy 이다.
(large clinical trial에서 항부정맥제의 사용이 proahythmic 작용으로 인
3. Synapse Characteristics
① Presynaptic cell에 신호 도착
② Na+ channel open, Ca+ channel open
③ Ca 이 synaptic vesicle들과 결합
④ vesicle들이 안에 담긴 neurotransmitter들을 synaptic cleft 방향으로 방출
⑤ Neurotransmitter는 receptor에 결합
⑥ postsynaptic cell의 Na channel open
⑦ postsynaptic cell에 depolarization
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
To stop or greatly slow down spoilage of food
Preventing
the growth of bacteria, fungi, and other micro-organisms
the oxidation of fats which cause rancidity
natural aging and discoloration
Drying, freezing, vacuum-packing, canning, pickling, salting, smoking, food irradiation, and adding preservatives, etc.
Various food-spoilage micro-organisms leads development of various modern techn