selective serotonin reuptake inhibitor


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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.

selective serotonin reuptake inhibitor

a class of chemical compounds that selectively, to varying degrees, inhibit the reuptake of serotonin by presynaptic neurons and are posited to exert their antidepressant effect by this mechanism.

selective serotonin reuptake inhibitor

n.
An SSRI.

selective serotonin reuptake inhibitor

Serotonin-selective-reuptake inhibitor, see there.

se·lec·tive ser·o·to·nin re·up·take in·hib·i·tor

(SSRI) (sĕ-lek'tiv ser'ŏ-tō'nin rē-ŭp'tāk in-hib'i-tŏr)
A class of drugs that selectively prevent the reuptake of serotonin and are used for the treatment of depression, e.g., fluoxetine, sertraline.

Selective serotonin reuptake inhibitor (SSRI)

A class of antidepressants that work by blocking the reabsorption of serotonin in the brain, raising the levels of serotonin. SSRIs include Prozac, Zoloft, and Paxil.

se·lec·tive ser·o·to·nin re·up·take in·hib·i·tor

(SSRI) (sĕ-lek'tiv ser'ŏ-tō'nin rē-up'tāk in-hib'i-tŏr)
Class of chemical compounds that selectively, to varying degrees, inhibit reuptake of serotonin by presynaptic neurons and are posited to exert their antidepressant effect by this mechanism.
References in periodicals archive ?
Also, our global selective serotonin reuptake inhibitors report has observed market growth factors such as the increased drug dependency associated with SSRIs, rising prevalence of mental illnesses, and favorable drug purchasing policies for patients.
Serotonin transporter occupancy of five selective serotonin reuptake inhibitors at different doses: an [11C]DASB positron emission tomography study.
All had failed to respond adequately to treatment with selective serotonin reuptake inhibitors (SSRIs) or selective serotonin-norepinephrine reuptake inhibitors (SNRIs), he said.
Serotonin is the target of the popular antidepressants known as selective serotonin reuptake inhibitors (SSRIs), which prolong the effect of serotonin in the brain.
Of these, 55 percent were for selective serotonin reuptake inhibitors (SSRIs), 32 percent for tricyclic antidepressants (TCAs), and 13.5 percent for "other" antidepressants.
Selective serotonin reuptake inhibitors (SSRIs) are more likely to cause death and issues such as heart attack, stroke, falls and seizures than older tricyclic antidepressants (TCAs), according to a study published in the British Medical Journal (BMJ).
Although the findings are too small to arrive at a conclusion, a new study has found that mothers who take atypical (second-generation) antidepressants called selective serotonin reuptake inhibitors (SSRIs) take longer to produce breast milk than mothers who do not take the drugs.
(1) Six percent of the almost 120,000 deliveries included in a retrospective study were to women who were given selective serotonin reuptake inhibitors, and 37% of these women had prescriptions for their antidepressant filled one or more times per trimester.
Psychiatry, neurology, pediatrics, and other medical professionals from the US and UK who have conducted studies on these treatments discuss the use of medications, including selective serotonin reuptake inhibitors and antidepressants, anticonvulsants and mood stabilizers, antipsychotics, cholinesterase inhibitors, and stimulants and nonstimulants for attention and hyperactivity.
So I was really surprised when I read the article on selective serotonin reuptake inhibitors (SSRIs) and birth defects.
Food and Drug Administration released a public health advisory in November that tells doctors to weigh the risks and benefits of prescribing selective serotonin reuptake inhibitors before prescribing them to pregnant women.

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