The interaction between drugs and their receptors significantly influences their efficacy and therapeutic outcomes. Drugs can act as full agonists, partial agonists, or bind to various types of receptors such as plasma-protein, enzyme, storage, transmembrane, and transport-carrier receptors.
are drugs that bind to and activate a given receptor, but have only partial efficacy at the receptor relative to a full agonist
Receptors can be activated by either endogenous agonists (such as hormones and neurotransmitters) or exogenous agonists (such as drugs), resulting in a biological response.
pharmacodynamics
secondary pathway receptors
beta receptor
Beta-1 receptor
alpha receptor
oxymetazoline
any of a group of receptors that are present on cell surfaces of some effector organs and tissues innervated by the sympathetic nervous system and that mediate certain physiological responses when bound by specific adrenergic agents
summary of the factors that determine the therapeutic and/or side effect of drugs
therapuetic identified include: route of administration, treatment complexity, duration of treatment period, medication side effects, degree of behavioral change required, taste of medication requirement for drug storage
side effect Type of drug
Quantity of drug used
Method of drug use
Time taken to consume
Tolerance
Gender, size and amount of muscle
Use of other psycho-active drugs
Mood or attitude
Expectation
Setting or environment effects
Difference between Pharmacokinetics and Pharmacodynamics
Parmacodynamics
Pharmacological effect on the body from the drug administered
Pharmacokinetics
Describes the effect the body has when a drug is administered
Receptor Classification
plasma-protein receptors
situated on plasma proteins. most drugs bind to plasma proteins
storage receptors
present in nerve endings in which endogenous neurotransmitters are stored
transport-carrier receptors
situated on carriers in cell membrans and can be utilised by certain drugs to carry them across the cell membrane
enzyme receptors
situated on enzymes the function of which is inhibited when a drug binds to them
transmembrane receptors
Membrane receptors transmit information about extracellular stimuli into the cytoplasm. This is achieved through a combination of changes in conformation and oligomeric state by membrane proteins with a single transmembrane domain