| RK | rabbit kidney; radial keratotomy; reductase kinase; rhodopsin kinase; right kidney |
|---|---|
| APSAC | 1) Acylating the Plasminogen Streptokinase Activated Complex 2) Anisoylat... |
| aPTT | activated Partial Thromboplastin Time |
| LAK T cells | Lymphokine Activated Killer T cells |
| AAK | allo-activated killer |
| MAPK/ERK | Mitogen-activated protein kinase/extracellular-signal-regulated kinase |
|---|---|
| SAPK/JNK | Stress-activated protein kinase/c-Jun N-terminal kinase |
| SAPK/JNK | Stress-activated protein kinase/c-Jun NH(2)-terminal kinase |
| ERK MAPK | extracellular signal-regulated kinase mitogen-activated protein kinase |
| MEK1 | mitogen activated protein kinase kinase-1 |
| caspase-activated deoxyribonuclease | <enzyme> Degrades DNA during apoptosis, inhibited by icad (inhibitor of cad); a protein of 343 amino acids carrying a nuclear localization signal. Registry number: EC 3.1.- Synonym: cad enzyme, caspase-activated dnase (26 Jun 1999) |
|---|---|
| ceramide-activated protein phosphatase | <enzyme> Belongs to the heterotrimeric subfamily of the pp2a group of serine-threonine protein phosphatases; involved in ceramide-mediated signal transduction; inhibited by okadaic acid Registry number: EC 3.1.3.- Synonym: ceramide-stimulated phosphatase, capp (enzyme) (26 Jun 1999) |
| monocytes, activated killer | Monocytes made cytotoxic by ex vivo incubation with cytokines, especially interferon-gamma. Akm cells are used for adoptive immunotherapy in cancer patients. (12 Dec 1998) |
| platelet endothelial cell activated protease | <enzyme> Degrades casein and fibrinogen; secreted by endothelial cells and activated in the extracellular medium by platelets; not inhibited by serine protease inhibitors, metalloproteinase inhibitors, or cystein protease inhibitors; pH optimum 7.5 Registry number: EC 3.4.99.- Synonym: pecap (26 Jun 1999) |
| immunologically activated cell | An immunocyte that is in an elevated state of reactivity capable of carrying out an immune response, in contradistinction to an immunologically competent cell. (05 Mar 2000) |
| thiol activated haemolysins | Cytolytic bacterial exotoxins that act by binding to cholesterol in cell membranes and forming ring like complexes that act as pores. SH groups of these toxins must be in the reduced state for the toxin to function. Oxidation (to disulphide bridges) inactivates the toxin. Examples: tetanolysin, streptolysin O, _ toxin, cereolysin. (18 Nov 1997) |
| killer cells, lymphokine-activated | Cytolytic lymphocytes with the unique capacity of killing natural killer (nk)-resistant fresh tumour cells. They are interleukin-2-activated nk cells that have no MHC (major histocompatibility complex) restriction or need for antigen stimulation. Lak cells are used for adoptive immunotherapy in cancer patients. (12 Dec 1998) |
| fluorescence-activated cell sorter | <technique> Flow cytometry is an emerging technique which holds great promise for the separation, classification and quantitation of blood cells and antibodies which affect blood cells. Complex computerised instruments are used to pass a monocellular stream of cells, platelets or other microscopic particulate elements through a beam of laser light. The cells are categorised first by size and then computer analysed to sort the mixture of cellular elements into cell type by size. Cells are labelled with fluorescent dye and then passed, in suspending medium, through a narrow dropping nozzle so that each cell is in a small droplet. A laser based detector system is used to excite fluorescence and droplets with positively fluorescent cells are given an electric charge. Charged and uncharged droplets are separated as they fall between charged plates and so collect in different tubes. The machine can be used either as an analytical tool, counting the number of labelled cells in a population or to separate the cells for subsequent growth of the selected population. Further sophistication can be built into the system by using a second laser system at right angles to the first to look at a second fluorescent label or to gauge cell size on the basis of light scatter. The great strength of the system is that it looks at large numbers of individual cells and makes possible the separation of populations with, for example: particular surface properties. Tabulation of counted data in conjunction with size analysis enables determination of relative percentages of each specific cellular subset for which monoclonal antibody conjugates are utilised, even when the size of the cell is identical to other subset species. Flow cytometry is a slightly imprecise but common term for the use of the Fluorescence-activated Cell Sorter (FACS). (01 Dec 1998) |
| fluorescence-activated cell sorting | <technique> A technique for separating and sorting cells marked with a fluorescent label based on how much they fluoresce at a particular wavelength. (12 Jan 1998) |
| light-activated resin | A resin which uses visible or ultraviolet light to excite a photoinitiator which interacts with an amine to form free radicals and initiate polymerization. Used mainly in restorative dentistry. Synonym: light-activated resin. (05 Mar 2000) |
| adrenergic receptors | Reactive components of effector tissues, most of which are innervated by adrenergic postganglionic fibres of the sympathetic nervous system. Such receptor's can be activated by norepinephrine and/or epinephrine and by various adrenergic drugs; receptor activation results in a change in effector tissue function, such as contraction of arteriolar muscles or relaxation of bronchial muscles; adrenergic receptor's are divided into alpha-receptor's and beta-receptor's, on the basis of their response to various adrenergic activating and blocking agents. Synonym: adrenoceptor, adrenoreceptors. (05 Mar 2000) |
| alpha-adrenergic receptors | Adrenergic receptor's in effector tissues capable of selective activation and blockade by drugs; conceptually derived from the ability of certain agents, such as phenoxybenzamine, to block only some adrenergic receptor's and of other agents, such as methoxamine, to activate only the same adrenergic receptor's. Such receptor's are designated as alpha-receptors. Their activation results in physiological responses such as increased peripheral vascular resistance, mydriasis, and contraction of pilomotor muscles. (05 Mar 2000) |
| ANP clearance receptors | Cell surface proteins that bind atrial natriuretic peptide and ANP fragments without initiating biological action. (05 Mar 2000) |
| ANP receptors | Cell surface receptors for atrial natriuretic peptide that have a single transmembrane spanning element; these have integral kinase and guanylate cyclase domains. (05 Mar 2000) |
| B-cell antigen receptors | In the primary immune response immunoglobulin D and monomeric immunoglobulin M are the B-cell antigen receptors. On memory B-cells, other immunoglobulin molecules can serve as antigen receptors. (05 Mar 2000) |