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Alcohol is also converted into phosphatidylethanol (PEth, an unnatural lipid metabolite) by phospholipase D2. This metabolite competes with PIP 2 agonist sites on lipid-gated ion channels. [28] [29] The result of these direct effects is a wave of further indirect effects involving a variety of other neurotransmitter and neuropeptide systems. [25]
Alcohol has a powerful effect on glutamate as well. Alcohol decreases glutamate's ability to bind with NMDA and acts as an antagonist of the NMDA receptor, which plays a critical role in LTP by allowing Ca2+ to enter the cell. These inhibitory effects are thought to be responsible for the "memory blanks" that can occur at levels as low as 0.03% ...
Gamma-aminobutyric acid, a GABA-B receptor agonist. A GABA receptor agonist is a drug that is an agonist for one or more of the GABA receptors, producing typically sedative effects, and may also cause other effects such as anxiolytic, anticonvulsant, and muscle relaxant effects. [1] There are three receptors of the gamma-aminobutyric acid. The ...
Ethanol has a variety of analogues, many of which have similar actions and effects. In chemistry, "alcohol" can encompass other mind-altering alcohols besides the kind we drink. Some examples include synthetic drugs like ethchlorvynol and methylpentynol, once used in medicine. Also, ethanol is colloquially referred to as "alcohol" because it is ...
Baclofen is a GABA analogue which acts as a selective agonist of GABA B receptors, and is used as a muscle relaxant. However, it can aggravate absence seizures, and so is not used in epilepsy. gamma-Hydroxybutyrate (GHB) Phenibut; 4-Fluorophenibut; Isovaline; 3-Aminopropylphosphinic acid; Lesogaberan
Atracurium: The recommended clinical dosage of atracurium for adults is to “dose to effect” approach to ensure muscle relaxation. [2] The drug has a relatively intermediate duration of action when compared to other non-depolarizing agents. [2] The drug has an onset of 2 to 3 minutes in adults and an expected peak effect at 3 to 5 minutes. [2]
A competitive antagonist does not affect the Emax of the agonist. This is because the effect of an agonist can be maximized by adding the dose of the agonist as the action of the antagonist is reversible. The maximum effect of the agonist can be achieved by adding the concentration of the agonist. [6] [31]
Bethanechol is a muscarinic agonist.It is included in the therapy for underactive bladder with poor contraction of detrusor muscle. [2] Since contraction of detrusor muscle in the bladder is controlled by the parasympathetic nervous system, Bethanechol can bind to muscarinic receptors to stimulate activation of the parasympathetic nervous system and restore contraction of detrusor muscle.