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Desmopressin (1-deamino-8-D-arginine vasopressin) is a synthetic form of the normal human hormone arginine vasopressin (the antidiuretic hormone, or ADH), a peptide containing nine amino acids. Compared to vasopressin, desmopressin's first amino acid has been deaminated , and the arginine at the eighth position is in the dextro rather than the ...
An antidiuretic is a substance that helps to control fluid balance in an animal's body by reducing urination, [1] opposing diuresis. [2] Its effects are opposite that of a diuretic.
The reaction process begins with diazotization of the amine by nitrous acid. The diazonium group is a good leaving group , forming nitrogen gas when displaced from the organic structure. This displacement can occur via a rearrangement (path A), in which one of the sigma bonds adjacent to the diazo group migrates.
To distinguish between the main forms, desmopressin stimulation is also used; desmopressin can be taken by injection, a nasal spray, or a tablet. While taking desmopressin, a person should drink fluids or water only when thirsty and not at other times, as this can lead to sudden fluid accumulation in the central nervous system.
Examples of ligands activating peroxisome proliferator-activated receptor gamma as partial agonists are honokiol and falcarindiol. [3] [4] Delta 9-tetrahydrocannabivarin is a partial agonist at CB2 receptors and this activity might be implicated in ∆9-THCV-mediated anti-inflammatory effects. [5]
Desmopressin rapidly improves short-term memory and enhances memory imprinting. Desmopressin is sometimes used for the treatment of diabetes insipidus, a condition of frequent urination and extreme thirst. In some countries, Desmopressin is used for amnesia and to treat narcotic-related mental problems.
Drug antagonism refers to a medicine stopping the action or effect of another substance, preventing a biological response. [1] [2] The stopping actions are carried out by four major mechanisms, namely chemical, pharmacokinetic, receptor and physiological antagonism. [2] The four mechanisms are widely used in reducing overstimulated ...
The "vaptan" drugs act by directly blocking the action of vasopressin at its receptors (V 1A, V 1B and V 2).These receptors have a variety of functions, with the V 1A and V 2 receptors are expressed peripherally and involved in the modulation of blood pressure and kidney function respectively, while the V 1A and V 1B receptors are expressed in the central nervous system.