(1) The hypothesis that opiate agonism requires an N substituent in the axial position does not appear to be consistent with the increased potency of beta isomers in which axial N substituents are thermodynamically more unstable.
(2) Under conditions of 5-HT1-like, 5-HT2 and 5-HT3 receptor blockade, the following rank order of agonism was observed: 5-HT > 5-methoxytryptamine = renzapride > (S)-zacopride > (R,S-zacopride > 5-carboxamidotryptamine > BRL 24682 > (R-zacopride > metoclopramide > 2-methyl-5-HT > sulpiride.
(3) At the agonal stage, the isoproterenol dose-response curve was shifted significantly to the right in myocardial membranes from endotoxic rats, but there was no significant decrease in maximum stimulated activity.
(4) Agonal state effects the stability of brain compounds and causes brain hypoxia.
(5) However, further studies showed compounds which exhibited either partial agonism in the RFA and competitive antagonism of 5-HT in the RA, or antagonism of 5-HT in both arteries with different affinities.
(6) Catecholamines were detectable in the major neurons, in small intensely fluorescent cells, and in adrenergic fibers with varicosities at levels that varied with the patient's age, cause of death, duration of the agonal period, the treatment administered, and the time when the material had been taken after death.
(7) Certain derivatives of the antagonists naloxone and naltrexone showed partial agonism.
(8) Except for desGly(NH2)AVP, which is a weak V2 agonist, the remaining desGly and desGly(NH2) analogues of 1-3 exhibit substantial V2 agonism and are thus highly selective V2 agonists.
(9) But bureaucratic dysfunction means less than half have been given out – as shown by two state department charts – and only at the end of agonizingly long waiting periods .
(10) The results failed to support the female agonism hypothesis and indicate a need for more detailed studies of intermale social dynamics.
(11) In the inferior parietal cortex, agonal status confounded this comparison.
(12) Dilevalol is a novel antihypertensive agent combining vasodilation due to selective beta 2-adrenergic receptor agonism with nonspecific beta antagonism.
(13) The results indicate that alpha 2-adrenergic agonism with clonidine inhibits the bronchoconstriction induced by histamine.
(14) We have found no evidence of a physiologically relevant effect of serotonin agonism on osmoregulated vasopressin release, or on the ability of normal man to excrete a water load.
(15) The partial agonism of N alpha-guanylhistamine is related to the ability of the drug to bind with the receptor in two different modes with similar affinity.
(16) In contrast U50,488H produced biphasic curves characterized by a higher potency phase of agonism that was susceptible to antagonism by 16-methylcyprenorphine (RX8008M) and a lower potency phase that was apparently non-opioid in nature.
(17) As this profile of activity is not shared by the shorter-acting compound, salbutamol, it would seem that anti-inflammatory activity is associated with beta-adrenoceptor agonism of long duration.
(18) To clarify the regulation of duodenal motility, the aim of the present study was to investigate the effects of alpha-adrenoceptor agonism and blockade and of galanin on duodenal motility.
(19) Agonist-independent pA2 estimates for ICS 205-930 (6.3-6.6) suggest a single site of agonism.
(20) In addition, analyses of beta-adrenoceptor agonism and antagonism, using selective (beta 1: T-1583, beta 2: procaterol) and non-selective (isoproterenol) agonists as well as selective (beta 1: atenolol, beta 2: ICI 118,551) and non-selective (propranolol) antagonists, confirmed that beta-adrenoceptors in the canine facial vein are not homogeneous, with the beta 1-subtype predominating over the beta 2-subtype, and that the canine saphenous vein has a homogeneous population of the beta 2-subtype, as reported in the other species.
Argon
Definition:
(n.) A substance regarded as an element, contained in the atmosphere and remarkable for its chemical inertness.
Example Sentences:
(1) An argon laser beam was used to irradiate the round window in 17 guinea pigs.
(2) We conclude that excellent hearing results can be obtained using the argon laser for stapedotomy procedures.
(3) A breath-holding maneuver was utilized with a high and a low N2O concentration in argon and oxygen.
(4) An argon dye laser system with lambda em=630 nm (400 mW cm-2) was used for PDT with a total light dose of 400 J cm-2.
(5) Direct detection of chromium in milk, using only argon as purge gas, was inferior.
(6) Argon laser settings were 1 W, 50-micron spot size, and durations of 0.2, 0.5, or 1.0 second.
(7) The authors compared the results of treatment in a group of patients (1st group--20 persons) with a retinal vein thrombosis with a second group (24 persons--25 eyes) treated pharmacologically with a simultaneous laser photocoagulation performed by argon and crypton lasers.
(8) After euthanasia and removal of the pelts, liver and kidney samples were collected from 174 mink and analyzed for 22 elements using inductively coupled argon plasma emission spectroscopy.
(9) The authors describe the use of a new contact argon laser scalpel designed specifically for hand-controlled cutting and hemostasis.
(10) We evaluated the two argon-enhanced coagulation (AEC) systems currently on the market from two different manufacturers, basing our ratings primarily on performance and safety and considering the clinical perspectives gained from discussions with surgeons who use these units.
(11) The effects of helium and argon, inert gases, on oxygen consumption have been studied on liver tissue of white rats who were delivered different fatty products plus to basic food).
(12) An argon beam coagulator was evaluated in 25 canine partial nephrectomies to determine its hemostatic capabilities, safety and degree of thermal injury to renal parenchyma.
(13) Experiments were performed in a cylinder full of beads open at one end and closed at the other in which a mixture of oxygen with helium or argon or sulphur hexafluoride could diffuse with ambient air through the open end.
(14) After argon blue-green laser treatment sessions, sensitivity was reduced for colors lying along a tritan color-confusion line for several hours.
(15) N(2) is not a necessary requirement for this synthesis since under argon that contains less than 10(-8)m N(2), the N(2)-fixing system is made.
(16) The most commonly used activating light source has been the argon pumped-dye laser (ADL) which produces a continuous wave of coherent light at 630 nm.
(17) In the first series tissue repair processes were studied after argon laser application.
(18) Hydroxyapatite ceramics with zirconia dispersion from fine powders synthesized hydrothermally were post-sintered at 1000-1300 degrees C under 200 MPa of argon for 1 h without capsules, after normal sintering in air at 1200 degrees C for 3 h. Densification was most significant with post-sintering at 1200 degrees C. Fracture toughness, Vickers hardness and elastic properties of these materials were investigated.
(19) A hybrid composite resin, Prisma APH, and a microfilled composite resin, Silux Plus, were compared regarding diametral tensile strength values following conventional visible light polymerization and argon lasing.
(20) The application of argon blue-green laser treatment at 0.1 watt for 60 seconds at two adjacent points on a feeder vessel was found to give rise to permanent vascular occlusion without causing complications.