inhibitor

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Related to PDE inhibitor: phosphodiesterase type 5 inhibitors, PDE5

inhibitor

 [in-hib´ĭ-tor]
1. any substance that interferes with a chemical reaction, growth, or other biologic activity.
2. a chemical substance that inhibits or checks the action of a tissue organizer or the growth of microorganisms.
3. an effector that reduces the catalytic activity of an enzyme.
ACE i's (angiotensin-converting enzyme i's) see angiotensin-converting enzyme inhibitors.
angiogenesis inhibitor a group of drugs that prevent growth of new blood vessels into a solid tumor.
aromatase i's a class of drugs that inhibit aromatase activity and thus block production of estrogens; used to treat breast cancer and endometriosis.
C1 inhibitor (C1 INH) a member of the serpin group, an inhibitor of C1, the initial component activated in the classical complement pathway. Deficiency of or defect in the protein causes hereditary angioedema.
carbonic anhydrase inhibitor an agent that inhibits the enzyme carbonic anhydrase; used in treatment of glaucoma and sometimes for epilepsy, familial periodic paralysis, acute mountain sickness, and kidney stones of uric acid.
cholinesterase inhibitor anticholinesterase.
COX-2 i's (cyclooxygenase-2 i's) a group of nonsteroidal antiinflammatory drugs that act by inhibiting cyclooxygenase-2 activity; they have fewer gastrointestinal side effects than other NSAIDs. Two members of the group are celecoxib and rofecoxib.
gastric acid pump inhibitor an agent that inhibits gastric acid secretion by blocking the action of H+,K+-ATPase at the secretory surface of gastric parietal cells; called also proton pump i.
HIV protease inhibitor any of a group of antiretroviral drugs active against the human immunodeficiency virus; they prevent protease-mediated cleavage of viral polyproteins, causing production of immature viral particles that are noninfective. Examples include indinavir sulfate, nelfinavir mesylate, ritonavir, and saquinavir.
HMG-CoA reductase i's a group of drugs that competitively inhibit the enzyme that catalyzes the rate-limiting step in cholesterol biosynthesis, and are used to lower plasma lipoprotein levels in the treatment of hyperlipoproteinemia. Called also statins.
membrane inhibitor of reactive lysis (MIRL) protectin.
monoamine oxidase inhibitor any of a group of drugs that inhibit the action of monoamine oxidase, the enzyme that breaks down norepinephrine and serotonin, prescribed for their antidepressant action; the most widely used ones are isocarboxazid, phenelzine, and tranylcypromine. They are also used in the prevention of migraine.
α2-plasmin inhibitor α2-antiplasmin.
plasminogen activator inhibitor (PAI) any of several regulators of the fibrinolytic system that act by binding to and inhibiting free plasminogen activator. Their concentration in plasma is normally low, but is altered in some disturbances of bodily hemostasis. PAI-1 is an important fast-reacting inhibitor of t-plasminogen activator and u-plasminogen activator. Its synthesis, activity, and release are highly regulated; elevated levels of it have been described in a number of disease states. PAI-2 is a normally minor inhibitor that greatly increases in concentration during pregnancy and in certain disorders. PAI-3 is protein C inhibitor.
platelet inhibitor any of a group of agents that inhibit the clotting activity of platelets; the most common ones are aspirin and dipyridamole. See also antiplatelet therapy.
protease inhibitor
1. a substance that blocks activity of endopeptidase (protease), such as in a virus.
protein C inhibitor the primary inhibitor of activated anticoagulant protein C; it is a glycoprotein of the serpin family of proteinase inhibitors and also inhibits several other proteins involved in coagulation (thrombin, kallikrein, and coagulation factors X and XI) and urokinase. Called also plasminogen activator inhibitor 3.
proton pump inhibitor gastric acid pump i.
reverse transcriptase inhibitor a substance that blocks activity of the reverse transcriptase of a retrovirus and is used as an antiretroviral agent. Some are nucleosides or nucleoside analogues, and those that are not are therefore often called non-nucleoside reverse transcriptase inhibitors.
selective serotonin reuptake inhibitor (SSRI) any of a group of drugs that inhibit the inactivation of serotonin by blocking its absorption in the central nervous system; used as antidepressants and in the treatment of obsessive-compulsive disorder and panic disorder.
serine protease inhibitor (serine proteinase inhibitor) serpin.
topoisomerase i's a class of antineoplastic agents that interfere with the arrangement of DNA in cells.

in·hib·i·tor

(in-hib'i-tŏr, -tōr),
1. An agent that restrains or retards physiologic, chemical, or enzymatic action.
See also: inhibition.
2. A nervous system structure, stimulation of which represses activity.
See also: inhibition.

inhibitor

also

inhibiter

(ĭn-hĭb′ĭ-tər)
n.
One that inhibits, as a substance that retards or stops a chemical reaction.

inhibitor

Medtalk A substance that inhibits the activity of protein or downregulates a pathway. See ACE inhibitor, Aldose reductase inhibitor, Angiogenesis inhibitor, Bovine pancreatic trypsin inhibitor, Bowman Birk protease inhibitor, Cartilage-derived inhibitor, Cholinergic inhibitor, COMT inhibitor, Factor VIII inhibitor, FLAP inhibitor, HMG CoA reductase inhibitor, Lipoprotein-associated coagulation inhibitor, Matrix metalloproteinase inhibitor, Monoamine oxidase inhibitor, Neuraminidase inhibitor, Neuropeptide Y inhibitor, Nonnucleoside reverse transcriptase inhibitor, NOS inhibitor, Plasminogen activator inhibitor, Postsynaptic serotonin antagonist-presynaptic serotonin reuptake inhibitor, Protease inhibitor, Reverse transcriptase inhibitor, Selective serotonin reuptake inhibitor, Serotonin-norepinephrine reuptake inhibitor, SLPI inhibitor, SSRI inhibitor, Tissue factor pathway inhibitor, Topoisomerase inhibitor, Trojan Horse inhibitor, Tyrosine kinase inhibitor, Vasopeptidase inhibitor.

in·hib·i·tor

(in-hib'i-tŏr)
1. An agent that restrains or retards physiologic, chemical, or enzymatic action.
2. A nerve, stimulation of which represses activity.
See also: inhibition

in·hib·i·tor

(in-hib'i-tŏr)
1. An agent that restrains or retards physiologic, chemical, or enzymatic action.
2. A nervous system structure, stimulation of which represses activity.
References in periodicals archive ?
In this study, an ultrafiltration LC-MS method was established for rapid screening potential PDE inhibitors for the first time.
Lugnier, "PDE inhibitors: a new approach to treat metabolic syndrome?" Current Opinion in Pharmacology, vol.
Caption: Figure 1: Ultrafiltration HPLC chromatograms of potential PDE inhibitors in I.
PDE inhibitors contribute to the treatment of LUTS by restricting the degradation of the second messenger cyclic GMP.
These findings were also presented as supportive data for the hypothesis of a justification for the use of PDE inhibitors in the treatment of BPH and LUTS.
(15) The findings of this study were presented by the authors as the potential mechanism by which PDE inhibitors can impact LUTS and BPH.
TABLE 1 Selectivity ratios of PDE inhibitors Sildenafil Vardenafil Tadalafil PDE1 80 257 >10,000 PDE2 >7500 >10,000 >10,000 PDE3 4400 3600 >10,000 PDE4 1800 5700 >10,000 PDE5 1 1 1 PDE6 10 224 780 PDE7 5160 No data >10,000 PDE8 >10,000 No data >10,000 PDE9 2796 No data >10,000 PDE10 1123 447 >10,000 PDE11 346 203 5.5 Adapted from Broderick GA.
It is notable that this activity is comparable to that of zaprinast, which is one of the few cGMP-specific PDE inhibitors (Sugita and Black, 1998).
Vivien Mak, Vice President of Research at Cellegy, commented, "Over the past two weeks, Cellegy has been issued two important United States patents (covering the use of PDE inhibitors and potassium channel openers) that result from our ongoing efforts to develop products for the treatment of fissures and hemorrhoids.