
	Where results make sense

Topic: Inverse agonist

Related Topics

Antihistamine

Flag

	About Inverse Agonists
		In the absence of agonist, this conformation is scarce.
		Addition of the inverse agonist stabilizes the inactive conformation of the receptor and drives the equilibrium away from the active conformation.
		Inverse agonists probably bind to and stabilize the inactive form, which pushes the equilibrium away from the spontaneous formation of the active conformation of the receptor.
	medicine.creighton.edu /pharmacology/inverse.htm (720 words)

	Inverse agonist - Wikipedia, the free encyclopedia
		In pharmacology, an inverse agonist is an agent which binds to the same receptor binding-site as an agonist for that receptor but exerts the opposite pharmacological effect.
		The pharmacological effect of an inverse agonist is measured as the negative value of the agonist primarily due to the historical findings of the already known agonist.
		One particular example is R015-4513 which is the inverse agonist of the benzodiazepine class of drugs (such as Xanax and Valium).
	en.wikipedia.org /wiki/Inverse_agonist (298 words)

	Trisubstituted phenyl derivatives having retinoid agonist, antagonist or inverse agonist type biological activity - ...
		Inverse agonists are ligands that are capable of inhibiting the basal receptor activity of unliganded receptors.
		Alternatively, the antagonist and/or inverse agonist compounds of the invention are co-administered with retinoid drugs, in situations where the retinoid provides a therapeutic benefit, and where the co-administered antagonist and/or inverse agonist compound alleviates or eliminates one or more undesired side effects of the retinoid.
		For this type of application the antagonist and/or inverse agonist compound may be administered in a site-specific manner, for example as a topically applied cream or lotion while the co-administered retinoid may be given enterally.
	www.freepatentsonline.com /6037488.html (14105 words)

	Agonist Information Center - dopamine agonist gambling
		An agonist is a substance agonist at the 5ht1a receptor that binds to a receptor and triggers a inverse agonist response agonist agonist definition at the 5ht1a receptor review b agonist agonist and antagonists in the cell.
		A partial agonist activates alpha agonist a receptor but the agonist agonist vs antagonist drugs does not cause as adenosine lhrh agonist definition of agonist and aromatase inhibitor receptor a3 agonist and nfat much of a physiological agonist drug change as does a full agonist.
		The receptors gnrh agonist use of the human body work by being stimulated or inhibited by natural (such as hormones agonist muscles of the shoulder girdle and neurotransmitters) define agonist medications or synthetic (such as drugs) agonists and antagonists.
	www.scipeeps.com /Sci-Biochemistry_Topics_A/Agonist.html (161 words)

	Pharmaceutical compositions and medical uses of dioxopiperidine derivatives - Patent 4835151
		The benzodiazepine inverse agonists include compounds which can produce 50% inhibition of flunitrazepam binding at a benzodiazepine receptor at a concentration less than 10.sup.-5 molar and which produce proconvulsant or convulsant effects in animals which are subject to blockade by the benzodiazepine antagonist RO 15-1788.
		Predominant among the benzodiazepine inverse agonists are methyl beta-carboline-3-carboxylate, ethyl beta-carboline-3-carboxylate, methyl 6,7-dimethoxy-4-ethyl-beta-carboline-3-carboxylate and 3-methylaminocarbonyl-beta-carboline.
		Benzodiazepine agonists and inverse agonists are generally believed to exert their respective anxiolytic or anxiogenic actions by respectively enhancing or reducing the coupling function of the benzodiazepine receptor to the gamma-aminobutyric acid (GABA) receptor-chloride channel complex.
	www.freepatentsonline.com /4835151.html (5197 words)

	Receptor Workbook
		Examples of agonist action are drugs that bind to beta receptors in the heart and increase the force of myocardial contraction or drugs that bind to alpha receptors on blood vessels to increase blood pressure.
		Agonists have both affinity, that is, the ability to bind to the receptor, as well as intrinsic activity, the ability to produce a measurable effect.
		Inverse agonists bind to constitutively active receptors and shift the equilibrium to the formation of the inactive conformer.
	www.mc.uky.edu /pharmacology/instruction/pha824mp/PHA824mp.html (4044 words)

	Physiology Basics: Receptors
		Such antagonism is commonly reversible by increasing the concentration of agonist (competitive antagonism) but sometimes we get lucky and find an antagonist that blocks the receptor by binding at a separate site, and this is not overcome by increasing the concentration of agonist.
		Agonists shifts the equilibrium in the direction of the active form - by binding the active form more avidly, they drive things in the direction of activation.
		Add an inverse agonist with a preference for the inactive receptor, the equilibrium shifts to the left, and the tonic 'agonist' effect is reversed!
	www.anaesthetist.com /physiol/basics/receptor/receptor.htm (1938 words)

	I to X
		An inverse agonist is a drug which acts at the same receptor as that of an agonist, yet produces an opposite effect.
		A partial agonist is an agonist which is unable to induce maximal activation of a receptor population, regardless of the amount of drug applied (See also Intrinsic activity).
		A second messenger is an intracellular metabolite or ion increasing or decreasing as a response to the stimulation of receptors by agonists, considered as the "first messenger".
	www.chem.qmul.ac.uk /iupac/medchem/ix.html (1566 words)

	Selective and Nonselective Inverse Agonists for Constitutively Active Type-1 Parathyroid Hormone Receptors: Evidence ...
		Effects of position 11 and 12 modifications on the inverse agonism of PTHrP(5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36).
		Antagonism of inverse agonists and classical agonists by PTHrP(5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36) analogs.
		30, 31, 32, 33, 34, 35, 36) analogs, for inverse agonism on
	endo.endojournals.org /cgi/content/full/142/4/1534 (6351 words)

	Identification of Determinants of Inverse Agonism in a Constitutively Active Parathyroid Hormone/Parathyroid ...
		Inverse agonists are ligands that reduce receptor signaling activity to below the basal signaling level seen with the unoccupied
		hP1R, the M425L mutation increased the agonist efficacy of Bpa
		induced by the ligand analog from that of inverse agonism to that
	www.jbc.org /cgi/content/full/276/46/42692 (5386 words)

	The Therapeutic Potential of Drugs That Target Cannabinoid Receptors or Modulate the Tissue Levels or Actions of ...
		These are usually all classified as inverse agonists since they can, in at least some cannabinoid receptor-containing systems, produce effects by themselves that are opposite in direction from those produced by agonists for these receptors.
		These share the ability of the inverse agonists to block responses to cannabinoid receptor agonists but lack the apparent ability of inverse agonists to produce inverse cannabimimetic effects in cannabinoid receptor-containing systems in the absence of any endogenously released or exogenously added cannabinoid receptor agonist.
		However, since these agents are both inverse agonists, it is also possible that they acted in an endocannabinoid-independent manner by reducing the extent to which cannabinoid receptors were coupling spontaneously to their effector mechanisms.
	www.aapsj.org /view.asp?art=aapsj070364 (8899 words)

	High Constitutive Signaling of the Ghrelin Receptor--Identification of a Potent Inverse Agonist -- Holst et al. 17 ...
		P as an inverse agonist on the ghrelin receptor was observed
		of an inverse agonist for the ghrelin receptor as an antiobesity
		Nijenhuis WA, Oosterom J, Adan RA 2001 AgRP(83–132) acts as an inverse agonist on the human-melanocortin-4 receptor.
	mend.endojournals.org /cgi/content/full/17/11/2201 (6260 words)

	In This Issue : Nature Chemical Biology (Site not responding. Last check: 2007-10-08)
		In contrast, binding of 'inverse agonist' ligands to GPCRs lowers receptor signaling activity, particularly in constitutively active receptors.
		The authors measured the rate of fluorescence resonance energy transfer (FRET) between CFP and YFP induced by inverse agonist binding and compared it to results obtained during agonist activation.
		They observed that inverse agonist binding induces a conformational change that is distinct from agonist-mediated GPCR activation.
	www.nature.com /nchembio/journal/v1/n1/full/nchembio0605-1.html (699 words)

	Ghrelin receptor mutations -- too little height and too much hunger -- Holst and Schwartz 116 (3): 637 -- Journal of ...
		(C) Diagram of the theoretical effect of an inverse agonist, which inhibits constitutive signaling; the effect of a pure antagonist, which blocks the agonist-mediated signaling without affecting the constitutive signaling; and the effect of a combined antagonist and inverse agonist (dotted curve in blue), which blocks both the agonist-induced signaling and the constitutive signaling.
		It should be noted that for 7TM receptors in general, antagonists generally also act as inverse agonists, a phenomenon whose salience depends on the receptor displaying a reasonable degree of constitutive signaling.
		However, compounds have been described — for example, in the ghrelin receptor system — that are significantly more potent as inverse agonists than as antagonists (4).
	www.jci.org /cgi/content/full/116/3/637 (2839 words)

	Agonist, Antagonist, and Inverse Agonist Characteristics of TIPP (H-Tyr-Tic-Phe-Phe-OH), a Selective delta -Opioid ...
		Agonist, Antagonist, and Inverse Agonist Characteristics of TIPP (H-Tyr-Tic-Phe-Phe-OH), a Selective delta -Opioid Receptor Ligand -- Martin et al.
		of an agonist, antagonist, or inverse agonist, depending on the
		Inverse Agonism and Neutral Antagonism at Wild-Type and Constitutively Active Mutant Delta Opioid Receptors
	jpet.aspetjournals.org /cgi/content/abstract/301/2/661 (341 words)

	Efficacy as a Vector: the Relative Prevalence and Paucity of Inverse Agonism -- Kenakin 65 (1): 2 -- Molecular ...
		Efficacy as a Vector: the Relative Prevalence and Paucity of Inverse Agonism -- Kenakin 65 (1): 2 -- Molecular Pharmacology
		Efficacy as a Vector: the Relative Prevalence and Paucity of Inverse Agonism
		Differential Effects of the 5-Hydroxytryptamine (5-HT)1A Receptor Inverse Agonists Rec 27/0224 and Rec 27/0074 on Electrophysiological Responses to 5-HT1A Receptor Activation in Rat Dorsal Raphe Nucleus and Hippocampus in Vitro
	molpharm.aspetjournals.org /cgi/content/abstract/65/1/2 (527 words)

	Receptor antagonist - Wikipedia, the free encyclopedia
		In medicine and biology, a receptor antagonist is a ligand that inhibits the function of an agonist and inverse agonist for a specific receptor.
		On their own, antagonists produce no effect by themselves to a cell, and are said to have zero intrinsic activity and zero efficacy.
		Unlike competitive antagonism, the covalent nature of the bond means the antagonist cannot be displaced by raising the concentration of the agonist.
	en.wikipedia.org /wiki/Receptor_antagonist (417 words)

	Agonist - Wikipedia, the free encyclopedia
		An agonist is a molecule that selectively binds to a specific receptor and triggers a response in the cell.
		It is a drug molecule (synthesized outside an organism) that reproduces the action of an endogenous natural biochemical (synthesized inside an organism).
		An agonist is a chemical contestant or contender.
	en.wikipedia.org /wiki/Agonist (249 words)

	Partial Agonist Activity of Bucindolol Is Dependent on the Activation State of the Human {beta}1-Adrenergic Receptor -- ...
		Partial Agonist Activity of Bucindolol Is Dependent on the Activation State of the Human {beta}1-Adrenergic Receptor -- Maack et al.
		Effect of agonist and inverse agonist pretreatment on forskolin and isoproterenol sensitivities.
		Human atrial myocardium was pretreated with agonist isoproterenol (1 µmol/L), inverse agonist metoprolol (30 µmol/L), or vehicle for 60 minutes.
	circ.ahajournals.org /cgi/content/full/108/3/348 (2867 words)

	IngentaConnect Development of New Drugs that Act Through Membrane Receptors and ... (Site not responding. Last check: 2007-10-08)
		However, since the discovery of the constitutive activity of some neurotransmitter receptors during the eighties, the inverse agonist drugs have emerged as a new group of bioactive compounds with the ability to decrease receptor basal activity.
		In recent years some inverse agonist drugs and their targets have been patented which are capable of treating CNS related disorders.
		These include inverse agonists that are selective for serotonin or histamine receptors aimed at treating neuropsychiatric disorders, cannabinoids with an anorexigenic effect and inverse agonists selective for gabaergic receptors for the treatment of neurodegenerative or cognitive disorders.
	www.ingentaconnect.com /content/ben/prn/2006/00000001/00000002/art00005 (344 words)

	Cell Type and Gene-specific Activity of the Retinoid Inverse Agonist AGN 193109: Divergent Effects from Agonist at ...
		Cell Type and Gene-specific Activity of the Retinoid Inverse Agonist AGN 193109: Divergent Effects from Agonist at Retinoic Acid Receptor {{gamma}} in Human Keratinocytes -- Thacher et al.
		agonist by analogy to ligands of the ß-adrenergic receptor,
		Mutual antagonism of RAR agonist and inverse agonist on inhibition of MRP-8 mRNA levels.
	cgd.aacrjournals.org /cgi/content/full/10/4/255 (4960 words)

	British Journal of Pharmacology - Detection of receptor ligands by monitoring selective stabilization of a Renilla ... (Site not responding. Last check: 2007-10-08)
		As such ligands are thought to favour the presence of inactive or ground states of GPCRs they are generally now referred to as 'inverse' agonists because they mirror the ability of agonist ligands to favour the enrichment of GPCRs in active conformational states (Milligan et al., 1995; Chen et al., 2000).
		receptor were reduced by sustained exposure to the agonist and the upregulatory effect of the inverse agonist, although statistically significant, was much less pronounced than for the CAM forms (Alewijnse et al., 2000).
		-adrenoceptor are strongly upregulated by sustained exposure to antagonist/inverse agonist ligands and that this capacity was correlated with the level of constitutive activity imbued by distinct mutations.
	www.nature.com /bjp/journal/v133/n2/full/0704077a.html (5271 words)

	Research Projects
		Cannabinoid agonists have been suggested to have potential therapeutic uses as appetite stimulants, analgesics, anti-emetics, anti-diarrheals, anti-spasmodics, tumor anti-proliferative agents, anti-glaucoma agents and as agents for the treatment of diseases associated with inappropriate retention of aversive memories such as post-traumatic stress disorders and phobias.
		Cannabinoid CB1 antagonists/inverse agonists have been suggested to have potential therapeutic uses as appetite suppressants and as agents that improve memory.
		We are interested in the events that must occur at the molecular level to produce agonist effects and inverse agonist effects.
	www.uncg.edu /che/Faculty/reggio/research.html (1177 words)

	[No title]
		Agonist can be compared with respect to their efficacy and potency 9.
		When a full agonist binds to only a fraction of the receptors and yet still elicits a full response due to amplification in the signal transduction pathway.
		Potentiation: The effect of one agonist in combination with an ineffective drug is greater than the sum of the agonist by itself.
	oregonstate.edu /~peila/Pharmstuff/Foundations.doc (1279 words)

	Agonist
		An agonist is a substance that binds to a receptor and triggers a response in the cell.
		An agonist is the opposite of an antagonist in the sense that while an antagonist also binds to the receptor, it fails to activate the receptor and actually blocks it from activation by agonists.
		A partial agonist activates a receptor but does not cause as much of a physiological change as does a full agonist.
	www.mrsci.com /Physiology/Agonist.php (669 words)

Try your search on: Qwika (all wikis)