Receptor antagonist
Receptor antagonist Antagonists In medicine and biology, a receptor antagonist ... is a substance that inhibits the normal physiological function of a receptor. Many drugs work ... neurotransmitters. There are two kinds of receptor antagonists: Antagonists that compete with an agonist for a receptor are competitive antagonists. An example is the interleukin-1 ...
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Ligand (biochemistry)
... function of the receptor and trigger a physiological response is called an agonist for that ... characterized both in terms of how much physiological response can be triggered and the concentration ... agonist that is required to produce the physiological response. High affinity ligand binding implies that ... a ligand binding site and trigger a physiological response. Low affinity binding implies that a ... site is maximally occupied and the maximum physiological response to the ligand is achieved. ...
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Opióide   (translated from Portuguese)
... modulation is made by the endogenos opióides (physiological), as endorfinas e encefalinas, that they are ... of the opium and. Opióides natural or physiological They regulate the pain sensations and they ... takes to the activação of the analgesic physiological system with release moderate amounts of endorfinas ... crónicas pains. Mixing Agonistas partial and Agonistas-antagonists They possess determined mixing behavior presenting antagonistic ... morphine. Butorfanol - similar to the nalbufina. Opióides antagonists They are fármacos that have effect ...
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Opioid
... such as naloxone or naltrexone. These competitive antagonists bind to the opioid receptors with higher ... researchers have experimented with mixed opioid agonist/antagonists such as buprenorphine for the treatment of ... as an adjunct to prevent these complications. Physiological tolerance does not develop with regard to ... a relatively new technique that uses opioid antagonists to cause acute withdrawal while the patient ... appreciably cross the blood-brain barrier) Opioid antagonists Naloxone Naltrexone See also Psychoactive drug ...
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Gastrin   (translated from Russian)
... of gastrin have linear three-dimensional structure. Physiological role Gastrin is connected with the specific ... vasodilation, to strengthening blood supply and to physiological edema of gastric mucosa and to the ... or cholinergic stimulation it is also the physiological mechanism of the initiation the digestion at ... also suppressed by cholecystokinin and secretin. The physiological value of this mechanism consists of the ... the inhibitors of the proton pump or antagonists the H2- histaminic receptors. Appearing with ...
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Dopamine   (translated from Russian)
... 2-(3,4-Dioksifenil)- ethylamine, or oxytyramine. ' Physiological role Dopamine as the neuromediator Dopamine appears ... hyper-tone of muscles. They are the physiological antagonists of dopamine in the extrapyramidal system atsetilkholin ... as the hormone Dopamine possesses the number physiological the properties, characteristic for the adrenergic substances ... influence of angiotensin and aldosterone. Probably, this physiological mechanism serves for the correction of ...
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GABA A receptor (Psychology wiki)
... Neuroanatomy Neurochemistry N.endocrinology P.N.Immunology Physiological P. Psychopharmacology The GABA A receptor is ... Martin and Dunn, 2002). [edit] Agonists and antagonists Other ligands (besides GABA) interact with the ... activate it (agonists), to inhibit its activation (antagonists) or to increase or decrease its response ... and certain steroids , called neuroactive steroids . Among antagonists are picrotoxin (which blocks the channel pore ... property of the many agonists and some antagonists is that they often have a ...
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Opioid (Psychology wiki)
... such as naloxone or naltrexone . These competitive antagonists bind to the opioid receptors with higher ... researchers have experimented with mixed opioid agonist/antagonists such as buprenorphine for the treatment of ... as an adjunct to prevent these complications. Physiological tolerance does not develop with regard to ... a relatively new technique that uses opioid antagonists to cause acute withdrawal while the patient ... cross the blood-brain barrier) [edit] Opioid antagonists Naloxone Naltrexone [edit] See also Psychoactive ...
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G-protein-coupled receptor (Psychology wiki)
... Neuroanatomy Neurochemistry N.endocrinology P.N.Immunology Physiological P. Psychopharmacology G-protein-coupled receptors (GPCRs ... stimulus-response pathways, from intercellular communication to physiological senses. The diversity of functions is matched ... to 50% of modern medicinal drugs. [edit] Physiological roles GPCRs are present in a wide variety of physiological processes. Some examples include: the visual sense ... in favour of inactive states; and neutral antagonists are ligands which do not affect ...
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Adenosine receptor
... therefore decreasing the heart rate. In normal physiological states, both of these receptors serve as ... bradycardias , adenosine has a negative effect on physiological functioning by preventing necessary compensatory increases in ... on adenosine receptor function, and adenosine receptor antagonists such as theophylline has lead to several randomized controlled trials using these receptor antagonists to treat bradyasystolic arrest [1-8]. The ...
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