(1) To evaluate the in vivo hemodynamics of smaller-sized (21 mm and 23 mm) Medtronic Hall (MH) valves in the aortic position, we measured the maximal pressure gradients (maxPG) at rest and during dobutamine (DOB) administration by continuous-wave Doppler echocardiography in 20 patients with aortic valve replacement.
(2) The second 12 cases were given the same doses of DOB instead of DOA.
(3) The most behaviorally potent analogues examined, DOB, DOM, and 5-methoxy-N,N-dimethyltryptamine, were found to possess rather high affirmities (pA2 = 7.35, 7.12, and 7.08, respectively) for the 5-HT receptors of the model system.
(4) [82Br]-DOB has been suggested as a potential brain scanning agent for nuclear medicine; 3b would have the advantage over DOB of providing the superior gamma-ray imaging properties of 131I or 123I.
(5) Potassium (K) values were almost constant during infusion of both drugs, but DOB reduced K concentration at the dose of 20 micrograms.kg-1.min-1.
(6) The results were as follows: 1) the effect of catecholamine on Ees prior to brain death was DA = DOB greater than NAD = AD.
(7) The study was aimed at comparing the effects of dobutamine (dob) and dopamine (dop) on isotonic contraction and rhythmicity of isolated guinea-pig papillary muscles (in oxygenated Tyrode at 37 degrees C), by taking into account: 1) the rate of stimulation (50% above the diastolic threshold) at 5 fixed periods: (RR: 1600, 1200, 1000, 800 and 400 ms); 2) 7 log concentrations (logC) of the index amine (from 10(-9) to 10(-3) M).
(8) Our results suggest that even in case of hypothermia, DOB retains a selective inotropic effect with no threat of arrhythmogenicity, and produces stable hemodynamics.
(9) Moreover, a significant correlation exists between drug potencies for (R)-(-)-[77Br]DOB-labeled sites and human hallucinogenic drug potencies (r = 0.89; p less than 0.01).
(10) People can also use their phones to dob in the neighbours.
(11) On the other hand, when CP and freqCP were coded, explanatory variables were AMP% and logAMP% (4.86 > t < 6.95, 0.06 > r2 < 0.09, p < 0.00001), but not the variable used to code the type of treatment (dob versus dop).
(12) In both systems, expression of this single serotonin receptor cDNA led to the appearance of both [3H]DOB and [3H]ketanserin binding sites with properties that matched their binding characteristics in mammalian brain homogenates.
(13) In competition experiments 8-OH-DPAT, TFMPP, mesulergine, DOB, and ICS 205-930 had low affinity for 3H-5HT-labeled 5HT1D sites, indicating that the pharmacology of the 5HT1D site is distinct from previously identified 5HT1A, 5HT1B, 5HT1C, 5HT2, and 5HT3 sites.
(14) Chronic DOB infusion was without effect on CRF concentrations in all hypothalamic and extrahypothalamic brain regions studied.
(15) This effect was apparently associated with down-regulation of the 5-HT2 receptor because high-affinity cortical [3H]DOB and hypothalamic (+-)-[125I]-1-(2,5-dimethoxy-4-iodophenyl)-2-amino-propane binding were decreased at this time as well.
(16) The effects of the 5-HT2-selective agonists 1-(4-bromo-2,5-dimethoxyphenyl)-2-aminopropane (DOB) and 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI) on cat platelet aggregation were investigated and compared with those produced by serotonin (5-HT) and a positional isomer of DOB (i.e., isoDOB).
(17) (4) The Dob IgG is relatively resistant to digestion with papain and trypsin; however, it is readily digested with pepsin, although at an unusual site.
(18) In contrast, specific [3H]DOB binding cannot be detected in bovine cortical membranes.
(19) Classical serotonin antagonists, most of which are rather selective for 5-HT2 sites, and 5-HT2-selective antagonists are able to block the stimulus effects of DOM, DOB, and DOI, but not those of 8-OH DPAT or TFMPP.
(20) (3) The Dob heavy chain has three fewer residues of half-cystine than expected in gamma1 chains.
Kob
Definition:
(n.) Alt. of Koba
Example Sentences:
(1) The transition was characterized by a single first order rate constant (kobs,i) which was independent of enzyme concentration.
(2) Knowledge of the salt dependences of ka and of the observed equilibrium constance Kobs of the ligand-nucleic acid interaction should usually be sufficient to determine whether a screening controlled mechanism or a pre-equilibrium mechanism is suitable to describe the process.
(3) A log kobs versus pH profile for the approach to the ionization equilibrium was determined, and a mechanism consistent with the profile was postulated.
(4) In the absence of cyanide, ferrocytochrome a3 appears at a rate (kobs) of 0.016 s-1.
(5) Above 25 microM AT.H complex, an increasing dead time displacement of p-aminobenzamidine and a downward deviation of kobs from the initial linear dependence on AT.H complex concentration were found, reflecting the saturation of an intermediate Xa.AT.H complex with a KD of 200 microM and a limiting rate of Xa-AT product complex formation of 140 s-1.
(6) At pH 7.8, the apparent single rate constant for association (kobs) at 4 degrees C was 4.72 x 10(+5).M-1.min-1.
(7) Thus, under pseudo-first order conditions ([AT]o, [H]o much greater than [T]o much less than [P]o), the observed thrombin inactivation rate constant (kobs) exhibited a saturable dependence on [AT]o or [H]o when [H]o much less than KT,H, reflecting a KAT,H (0.25 microM) similar to that directly determined by equilibrium binding.
(8) The nature of the anion often has a major effect on the magnitude of the equilibrium constant (Kobs) and rate constant (kobs) of protein-DNA interactions, but a minor effect on SKobs and Skobs, which are dominated by the cation stoichiometry.
(9) The rate constant (kobs) for loss of ADP activation exhibits a nonlinear dependence on 2-BDB-TAMP concentration, suggesting a reversible binding of reagent (KR = 0.74 mM) prior to irreversible modification.
(10) The kobs max value in tissues from insulin-dependent diabetic patients was significantly greater than that in tissues from either noninsulin-dependent diabetics or nondiabetics.
(11) Reduction by lumiflavin semiquinone followed single exponential kinetics and the observed rate constant (kobs) was linearly dependent on protein concentration (k = 1.8 X 10(7) M-1s-1 heme-1).
(12) At 0.25 M-KX, the increase in Kobs for Osym is observed to be approximately 40-fold, whereas for non-operator DNA the increase in Kobs is estimated by extrapolation to be approximately 300-fold.
(13) The Kobs of this reaction reflects the difference between the observed standard free energy change (delta G-oobs) for the hydrolysis of acetylcholine and the delta G-oobs for the hydrolysis of acetyl-CoA.
(14) The observed equilibrium constants (Kobs) of the creatine kinase (EC 2.7.3.2), myokinase (EC 2.7.4.3), glucose-6-phosphatase (EC 3.1.3.9), and fructose-1,6-diphosphatase (EC 3.1.3.11) reactions have been determined at 38 degrees C, pH 7.0, ionic strength 0.25, and varying free magnesium concentrations.
(15) Stopped-flow spectrophotometry also showed that electron transfer from the Fe-protein to the MoFe-protein in states E0 and E1H occurs at the same rate (kobs.
(16) A study of kobs vs pH suggests this active-site lysine has a pKa of 8.1 and a pH-independent rate constant of inactivation of 47,700 M-1 min-1.
(17) At all temperatures, the pH strongly influenced the observed degradation rate constant (kobs) values, with rate minima observed near pH 4.
(18) Alkylation of the N-terminal half resulted in biphasic calcium release with rates (kobs 153 s-1 and 10.9 s-1 respectively) similar to those observed in intact alkylated calmodulin.
(19) At 1.2 mM 2-BDB-TAMP, kobs = 0.060 min-1 and is not affected by alpha-ketoglutarate or GTP, but is decreased to 0.020 min-1 by 5 mM NADH and to zero by 5 mM ADP.
(20) A plot of the pseudo-first order rate constant (Kobs) versus T1K concentration was linear, and values for the association (k1) and dissociation (k-1) rate constants were obtained.