After reading this article you will learn about the concept and types of pharmacokinetic models. Concept of Pharmacokinetic Models: Drugs remain in dynamic state within the body and drug events often happen simultaneously. In order to describe a complex biologic system, assumptions are made concerning the movement of drugs. The mathematical models are used to describe the absorption, distribution and [...]
After reading this article you will learn about the role and functions of second messengers. Many hormones, neurotransmitters, autacoids and drugs act on specific membrane receptors, the immediate consequence of which is activation of a cytoplasmic component of the receptor, which may be an enzyme such as adenylate cyclase, guanylate cyclase or activation of a transport systems or opening of [...]
This article throws light upon the four main types of receptors. The types are: 1. Receptors for Fast Neurotransmitters 2. Receptor for many Hormones and Slow Transmitters 3. Receptors for Insulin and Various Growth-Factors 4. Steroid Receptors. Type # 1. Receptors for Fast Neurotransmitters: These are coupled directly to an ion- channel. These receptors are involved mainly in fast synaptic [...]