(n.) A colorless, tasteless, odorless, gaseous element occurring in the free state in the atmosphere, of which it forms about 23 per cent by weight and about 21 per cent by volume, being slightly heavier than nitrogen. Symbol O. Atomic weight 15.96.
(n.) Chlorine used in bleaching.
Example Sentences:
(1) Steady-state values of cell, glucose, and cellulase concentration oxygen tension, and outlet gas oxygen partial pressure were recorded.
(2) It is concluded that amlodipine reduces myocardial ischemic injury by mechanism(s) that may involve a reduction in myocardial oxygen demand as well as by positively influencing transmembrane Ca2+ fluxes during ischemia and reperfusion.
(3) Heart rate (HR), pulmonary ventilation (V), oxygen consumption (VO2), carbon dioxide production (VCO2), and respiratory quotient (RQ) were measured.
(4) Manometric studies with resting cells obtained by growth on each of these sulfur sources yielded net oxygen uptake for all substrates except sulfite and dithionate.
(5) The data indicate that ebselen is likely to be useful in the therapy of inflammatory conditions in which reactive oxygen species, such as peroxides, play an aetiological role.
(6) These membrane perturbation effects not observed with bleomycin-iron in the presence of a hydroxyl radical scavenger, dimethyl thiourea, or a chelating agent, desferrioxamine, were correlated with the ability of the complex to generate highly reactive oxygen species.
(7) Microelectrodes were used to measure the oxygen tension (PO2) profile within individual spheroids at different stages of growth.
(8) However, time in greater than 21% oxygen was significantly longer in infants less than 1000 g (median 30 days, 8.5 days in patients greater than 1000 g, p less than 0.01).
(9) Previous studies have not evaluated the potential for oxygen toxicity at 9.5 psia.
(10) The pH of ST solutions varied with the mode of oxygenation as follows: 7.9-8.2 in Groups I and IV; 8.7-8.9 in Groups II and V; 7.1-7.4 in Groups III and VI.
(11) The aim of this study was to plot the course of the transcutaneously measured PCO2 (tcPCO2) in the fetus during oxygenation of the mother.
(12) Blood gas variables produced from a computed in vivo oxygen dissociation curve, PaeO2, P95 and C(a-x)O2, were introduced in the University Hospital of Wales in 1986.
(13) Also for bronchogenic carcinoma with that a dependence could be shown between haemoglobin concentration--and by this the oxygen supply of the tumor--and the reaction of the primary tumor after radiotherapy.
(14) The present results using approximately 12% hemoglobin concentration in 0.1 M Bistris buffer at pD 7 and 27 degrees C with and without organic phosphate show that there is no significant line broadening on oxygenation (from 0 to 50% saturation) to affect the determination of the intensities or areas of these resonances.
(15) There was good agreement between the survival of normally oxygenated cells in culture and bright cells from tumors and between hypoxic cells in culture and dim cells from tumors over a radiation dosage range of 2-5 Gray.
(16) In presence of oxygen (air) the phototactic reaction values are somewhat lower than in its absence.
(17) A fiberoptic flow-directed catheter inserted into the hepatic vein continuously measures hepatic venous oxygen hemoglobin saturation (ShvO2).
(18) Anaesthesia was achieved by a mixture of oxygen, nitrous oxide and fluothane without use of muscle relaxants.
(19) The use of 100% oxygen to calculate intrapulmonary shunting in patients on PEEP is misleading in both physiological and methodological terms.
(20) Tachycardia, pulmonary hypertension, increased venous oxygen desaturation, and increasing core temperature develop as the syndrome progresses.
Oxytocic
Definition:
(a.) Promoting uterine contractions, or parturition.
(n.) An oxytocic medicine or agent.
Example Sentences:
(1) Classical treatment combining artificial delivery or uterine manual evacuation-oxytocics led to the arrest of bleeding in 73 cases.
(2) They are also potent antagonists of the in vitro oxytocic responses to oxytocin, both in the absence and in the presence of Mg2+.
(3) A review of the literature was conducted to survey obstetric practice with regard to amniotomy, intravenous fluids, third stage administration of oxytocics, episiotomy and continuous fetal monitoring.
(4) It can be useful, in fact, during the three periods of a pregnancy: before delivery: it can effect all the functional and psychiatric problems a pregnant woman may develop; during delivery: there is a definite analgesic and oxytocic effect; after delivery: it can be beneficial in all difficulties with breast feeding.
(5) Should these peptides exhibit enhanced oxytocic selectivity in humans, they might offer a greater margin of safety than oxytocin in those clinical stiuations in which the latter is currently employed.
(6) The retro-analogs of deaminotocinamide, tested at concentrations up to 10)-5)M, were found to be without activity as agonists or antagonists in the oxytocic assay.
(7) Bioassay of the pressor and oxytocic activities of the protein-hormone complexes shows that neurophysin-C binds one molecule of either vasopressin or oxytocin.
(8) As part of a program in which we are attempting the design and synthesis of an antagonist of the antidiuretic response to arginine-vasopressin (AVP) [1-(beta-mercapto-beta,beta-cyclopentamethylenepropionic acid),4-valine,8-D-arginine]vasopressin [d(CH2)5VDAVP] was synthesized and assayed for antidiuretic, vasopressor, and oxytocic activities.
(9) While rupture of the uterus by oxytocic agents in the second trimester has previously been documented, this case is unusual in that fetal parts were palpable through the cervical os, delaying diagnosis and definitive management.
(10) It was found that oxytocic activity of this material was completely destroyed by thioglycollate buy not by trypsin, when tested on the contractility of the isolated hen's uterus.
(11) On the 5th day after ovariectomy or implantation of stilboestrol the oxytocic activity was found to be significantly increased in the plasma and posterior pituitary lobe, and after progesterone implantation it was decreased in the posterior pituitary lobe.
(12) The recent availability of kinin receptor antagonists led us to study whether they might affect the oxytocic activity of kallikrein.
(13) Whether this class of hormones has pressor or oxytocic activity is determined by the orientation of the Tyr2 side chain, that is, whether it is extended away from or over the ring system, respectively.
(14) To characterize the receptors mediating these responses, the effects of AVP, oxytocin, and synthetic neurohypophyseal analogues with specific antidiuretic, vasoconstrictor, or oxytocic activities were studied in conscious dogs.
(15) They had lower frequencies of ultrasound examination, induced labour, epidural analgesia, episiotomy, forceps delivery and caesarean section, and a low frequency of use of oxytocics for the third stage.
(16) In total 90% of the women received drugs, excluding laxatives, oxytocics and long-term medication, vitamins and iron.
(17) Storage in solution at pH 9.5 generated oxytocic activity in an initially basic preparation of ovine growth hormone.
(18) However, pancreatic protease extract produced a significant loss of the anti-oxytocic action on the isolated rat uterus preparation.
(19) Both oxytocic immunoreaction in our own specific radioimmunoassay and bioaction on rat uterine contraction were observed in the larger (MW greater than or equal to 5,000) and the smaller molecular part (MW not equal to 1,000) in partially purified placental extracts by gel-filtration using Sephadex G-25.
(20) The analog was found to be a potent inhibitor of the oxytocic and avian vasodepressor effects of oxytocin (pA2 values of 7.43 and 8.30, respectively) but was only a weak inhibitor of the rat pressor effect of 8-lysine-vasopressin.