chemical mediator

Mira otros diccionarios:

• mediator — An intermediary substance or thing. pharmacologic mediators of anaphylaxis substances released from mast (and other) cells by the reaction of antigen and specific homocytotropic antibody on their surfaces; they include histamine, slow reacting… …   Medical dictionary

• mediator — noun Date: 14th century 1. one that mediates; especially one that mediates between parties at variance 2. a mediating agent in a physical, chemical, or biological process …   New Collegiate Dictionary

• mediator — n. [L. medius, middle] Association, internuncial, neuron; chemical such as a hormone that controls or modifies a metabolic process …   Dictionary of invertebrate zoology

• hormone — hormonal, hormonic /hawr mon ik, moh nik/, adj. /hawr mohn/, n. 1. Biochem. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues… …   Universalium

• blood — bloodlike, adj. /blud/, n. 1. the fluid that circulates in the principal vascular system of human beings and other vertebrates, in humans consisting of plasma in which the red blood cells, white blood cells, and platelets are suspended. 2. the… …   Universalium

• Thalidomide — This article is about the drug. For the musical about a person with thalidomide disability, see Thalidomide!! A Musical. Thalidomide Systematic (IUPAC) name (RS) 2 (2,6 dioxopiperidin 3 yl) 1H isoind …   Wikipedia

• amine — aminic /euh mee nik, euh min ik/, adj. aminity /euh min i tee/, n. /euh meen , am in/, n. Chem. any of a class of compounds derived from ammonia by replacement of one or more hydrogen atoms with organic groups. [1860 65; AM(MONIUM) + INE2] * * *… …   Universalium

• sympathin — The substance diffusing into circulation from sympathetic nerve terminals when they are active. The term was introduced by W.B. Cannon, who thought that this substance differed from the mediator produced by the nerve ending (now known to be… …   Medical dictionary

• H1 antagonist — An H1 antagonist is a histamine antagonist of the H1 receptor that serves to reduce or eliminate effects mediated by histamine, an endogenous chemical mediator released during allergic reactions. Agents where the main therapeutic effect is… …   Wikipedia

• transmission — 1. SYN: transfer. 2. The conveyance of disease from one person to another. 3. The passage of a nerve impulse across an anatomic cleft, as in autonomic or central nervous system synapses and at neuromuscular junctions, by …   Medical dictionary

• ectohormone — A parahormonal chemical mediator of ecologic significance which is secreted, largely by an organism (usually an invertebrate) into its immediate environment (air or water); it can alter the behavior or functional activity of a second organism,… …   Medical dictionary