A decrease in the response to an agonist following repeated exposure. Can arise through a variety of mechanisms.
Found on http://www.encyclo.co.uk/visitor-contributions.php
1. <immunology> The rapid immunisation against the effect of toxic doses of an extract or serum by previous injection of small doses. ... 2. <pharmacology> The rapidly decreasing response to a drug or physiologically active agent after administration of a few doses. ... Origin: Gr. Phyla...
Found on http://www.mondofacto.com/facts/dictionary?tachyphylaxis
(tachy- + Gr. phylaxis protection) 1. rapid immunization against the effect of toxic doses of an extract or serum by previous injection of small doses. 2. rapidly decreasing response to a drug or physiologically active agent after administration of a few doses.
Found on http://users.ugent.be/~rvdstich/eugloss/DIC/dictio85.html
tachyphylaxis 1. Rapid immunization to a toxic dose of a substance by previously injecting tiny doses of the same substance.2. Rapid appearance of progressive decrease in response following repetitive administration of a pharmacologically or physiologically active substance. 3. Also known as tachy...
Found on http://www.wordinfo.info/words/index/info/view_unit/2663/4
Tachyphylaxis is a medical term describing an acute (sudden) decrease in the response to a drug after its administration. Tachyphylaxis can occur both after an initial dose of medication or after an inoculation with a series of small doses. Increasing the dose of the drug may be able to restore the...
Found on http://en.wikipedia.org/wiki/Tachyphylaxis
Type: Term Pronunciation: tak′i-fī-lak′sis Definitions: 1. Rapid appearance of progressive decrease in response to a given dose after repetitive administration of a pharmacologically or physiologically active substance.
Found on http://www.medilexicon.com/medicaldictionary.php?t=89536
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