What's the difference between inhibitor and physostigmine?
Inhibitor
Definition:
(n.) That which causes inhibitory action; esp., an inhibitory nerve.
Example Sentences:
(1) The ability of azelastine to influence antigen-induced contractile responses (Schultz-Dale phenomenon) in isolated tracheal segments of the guinea-pig was investigated and compared with selected antiallergic drugs and inhibitors of arachidonic acid metabolism.
(2) The penetration of (22)Na was not prevented by the presence of metabolic inhibitors or by 500 mm NaCl in the suspending medium.
(3) This induction is sensitive to actinomycin D but not to protein synthesis inhibitor puromycin, indicating an effect of estradiol at the transcriptional level, possibly mediated by the estrogen receptor.
(4) [Ca2+]i exhibited a sigmoidal dependence on [Na+]o. Mg2+, a competitive inhibitor of Na2+-Ca2+ antiport in these cells, antagonized the increase in [Ca2+]i produced by lowering [Na+]o.
(5) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
(6) The concentrations of five normally occurring protease inhibitors in serum and synovial fluid were compared in patients with rheumatoid arthritis, osteoarthrosis, and normal controls.
(7) Dilutional studies comparing the mechanism of inhibition of monoamine oxidase produced by Gerovital H3 and by ipronizid demonstrated that Gerovital H3 was a reversible inhibitor of monoamine oxidase.
(8) The variation of the activity of the peptidase with pH in the presence of various inhibitors was investigated in both control and insulted muscle fibres.
(9) The specific limited trypsinolysis of bacteriophage T7 RNA polymerase (T7RP) was performed in the presence of various components of the polymerase reaction and some GTP-analogs--irreversible inhibitors of the enzyme.
(10) MAF-G activity was inhibited by mitomycin C and colchicine, which inhibit DNA synthesis and mitosis, respectively, but not by 2-deoxy-D-glucose, an inhibitor of glucose metabolism.
(11) Because it has been suggested that the lathyrogen, BAPN, may stimulate the release of proteases, the protease inhibitors Trasylol and epsilon-aminocaproic acid (EACA) were given alone or in combination to BAPN-treated rats.
(12) We have confirmed this directly by showing that pure CCK is a potent inhibitor of gastric emptying.
(13) We conclude that human hepatic lipocytes synthesize TIMP-1, a potent metalloproteinase inhibitor, and that TIMP-1 expression increases with lipocyte activation.
(14) Peptides from this region bind to actin, act as mixed inhibitors of the actin-stimulated S1 Mg2(+)-ATPase, and influence the contractile force developed in skinned fibres, whereas peptides flanking this sequence are without effect in our test systems.
(15) The enzyme was quantitated by incubation of 16-micron-thick brain sections with 0.07-2 nM of the converting enzyme inhibitor 125I-351A and comparison to 125I-standards.
(16) The influence of the inhibitors on the transferase induction was dose and time-dependent.
(17) While both inhibitors caused thermosensitization, they did not affect the time scale for the development of thermotolerance at 42 degrees C or after acute heating at 45 degrees C. The inhibitors of poly(ADP-ribosylation) radiosensitizers and thermosensitizers may be of use in the treatment of cancer using a combined modality of radiation and hyperthermia.
(18) The effects of burimamide, an H2-inhibitor, and mepyramine and chlorpheniramide, both H1-inhibitors, were tested.
(19) p-Chlorophenylalanine (PCPA) also reduced the response to levodopa but the usefulness of PCPA as an inhibitor of 5HT synthesis in these experiments in doubtful since it also inhibited the hypoglycaemic effects of 5HTP and i.c.v.
(20) The inhibitor also reduced the infarct size at 48 h by 34.4%.
Physostigmine
Definition:
(n.) An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical.
Example Sentences:
(1) injection of the tertiary amine cholinesterase inhibitor physostigmine (17-70 micrograms kg-1) induced a prompt, sustained and dose-dependent improvement of cardiovascular and respiratory function, with marked increase in the volume of circulating blood and survival of all treated animals, at least for the 2 h of observation.
(2) Drugs known to improve memory, including physostigmine, pramiracetam and the muscarinic agonists, oxotremorine and RS 86, selectively induced analgesia in rats subjected to test before the shock plus the shock, thereby supporting a hypothesis of avoidance learning.
(3) Plasma and brain containing physostigmine were first precipitated with TCA, and then carbaryl was added.
(4) In the presence of physostigmine the two sources of stimuli were equally effective.
(5) The study of the drugs effective in the treatment of cognitive deficits and memory loss associated with senile dementia of the Alzheimer's type--tacrine and amiridin, acetylcholinesterase inhibitor physostigmine and nootrop piracetam on uptake of 3H-serotonin (3H-5-HT), 3H-adrenaline (3H-AD), 3H-noradrenaline (3H-HA), 2H-dopamine (3H-DA), 3H-gamma-aminobutyric acid (3H-GABA), 3H-glutamic acid (3H-GLU), 3H-aspartic acid (3H-ASP) and 3H-glycine (3H-GLI) showed that tacrine and amiridin (5 x 10(-5) M) statistically significantly (P less than 0.05) inhibited the uptake of 3H-DA and 3H-5-HT.
(6) The present results demonstrate that either the presurgical drug treatment (desmethylimipramine and pentobarbital) or 7 days isolation was alone sufficient to reduce the yawning response to physostigmine and abolish its potentiation by nifedipine.
(7) Predicted concentrations of physostigmine in different tissue compartments were consistent with the experimental observations in the rat following an iv dose.
(8) Acute exercise modifies the effect of physostigmine significantly (p less than 0.01) by increasing the cholinesterase inhibition in red blood cells and brain without affecting other tissues.
(9) The time of survival of DFP exposed animals increased after pretreatment with carbamates, more after physostigmine (81 min) than after pyridostigmine (59 min).
(10) To examine the efficacy of cholinergic enhancement in senile dementia of the Alzheimer type (SDAT), oral physostigmine was given to eight patients in a cross-over trial of three dose levels and a matching placebo.
(11) In a group of the MS-DB units with stable background theta bursts the typical response consisting of entrainment of the phase-locked theta cycles was changed neither by physostigmine, nor by cholinergic-blocking drugs (scopolamine and atropine).
(12) Aimed at the centralized manufacture of physostigmin salicylate injection solutions, the efficacy of different stabilizators has been studied under conditions of the thermic load.
(13) The kinetics of the nicotine effects on uptake were different from those of physostigmine.
(14) For example, scopolamine elicits increased locomotor activity, an action which is attenuated by glucose and by combined treatment with glucose and physostigmine at doses which are individually without effect.
(15) The effect of physostigmine on recent memory was evaluated in young and aged rhesus monkeys.
(16) After oral physostigmine administration the following morning, the majority of patients experienced side effects such as nausea and abdominal pain.
(17) To assess the efficacy of oral physostigmine for the treatment of Alzheimer's disease, 20 patients were entered into a clinical trial.
(18) These retention deficits could be reversed by the postacquisition administration of the acetylcholinesterase inhibitor, physostigmine.
(19) Atropine reduced the dopamine-induced secretion significantly, and physostigmine enhanced the secretion.
(20) Serum butyrylcholinesterase (EC 3.1.1.8) appears to be responsible for this hydrolysis, as evidenced by its inhibition by physostigmine and catalysis by commercially available pseudocholinesterase from horse and human blood.