SLE115 Lecture Notes - Lecture 3: Tetanospasmin, Xenobiotic, Xanthine

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Pharmacology is the branch of science which deals with the characteristics and properties of drugs. Of particular interest are the actions and effects of these chemicals on the human body. The study of drugs: involves (cid:858)phar(cid:373)a(cid:272)otherapeuti(cid:272)s(cid:859) (cid:449)hi(cid:272)h is defi(cid:374)ed as (cid:272)uri(cid:374)g, treati(cid:374)g or pre(cid:448)e(cid:374)ti(cid:374)g disease a(cid:374)d the alle(cid:448)iatio(cid:374) of pai(cid:374) a(cid:374)d suffering. The study of drugs includes drug abuse and toxicology. Pharmacodynamics: what the drug does to the body. Pharmacokinetics: what the body does to the drug. Drug: chemical substance that has actions on living tissues. Xenobiotic: any foreign substance taken into the body that may produce beneficial effects or they may be toxic. Toxins: specific proteins produced by living organisms (mushroom toxin or tetanus toxin) that exhibit immediate (acute) effects. Poisons: toxicants that cause immediate death or illness when experienced in very small amounts. Agonists: drugs that occupy receptors and activate them. Antagonists: drugs that occupy receptors but do not activate them.

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