(1) Oxyhaemoglobin (4 microns at 0.35 ml.min-1) infused into the tracheal circulation almost abolished the responses to bradykinin and methacholine.
(2) Arterial oxyhaemoglobin saturation (SaO2) was monitored continuously during normal labour in 33 healthy parturients receiving pethidine and nitrous oxide for analgesia.
(3) Hypoxaemia was graded into four values of oxyhaemoglobin saturation (SpO2).
(4) In conclusion, a dry sucrose network was recognized as a significant support to the native ferrous structure of oxyhaemoglobin, while the presence of water molecules, of assumed peroxidic radicals and the action of thermal vibrations favour the oxidation and denaturation of haemoglobin.
(5) Oxyhaemoglobin used for the assay of NO, inhibited the relaxation by SIN-1, but did not reduce vessel relaxations induced by GTN or iloprost, a stable prostacyclin analogue.
(6) These values are close to those for the FeO2- centre formed in the beta-chains of normal oxyhaemoglobin.
(7) The data show that nocturnal sleep has some adverse influence on oxygen balance in these patients as suggested by the occurrence of arterial oxyhaemoglobin desaturation occurring mainly during REM stages.
(8) These results indicate that O2 rather than oxyhaemoglobin is likely to initiate divicine oxidation in the erythrocyte.
(9) The inhibition was potentiated by superoxide dismutase (SOD) and reversed by oxyhaemoglobin (oxyHb).
(10) The alpha 1 alpha 2 interface involves similar salt bridges in both forms, but in oxyhaemoglobin buries 240 A2 more surface than in deoxyhaemoglobin.
(11) The inhibition of platelet aggregation obtained with non-treated or LPS-treated SMC was potentiated by superoxide dismutase (SOD, 60 u ml-1) and ablated by oxyhaemoglobin (OxyHb, 10 microM).
(12) The change of purple oxyhaemoglobin to the darker reduced haemoglobin and methaemoglobin was used as an initial visual growth indicator in continuously agitated, aerobic Colorbact bottles after inoculation with a broad assortment of aerobic and facultatively anaerobic bacteria previously isolated from blood cultures.
(13) We have accepted that oxyhaemoglobin (Oxy-Hb) is an important spasmogenic substance.
(14) Ventilatory rate and volume and arterial oxyhaemoglobin saturation were recorded continuously for the first 24 h following surgery.
(15) Human normal, adult and foetal oxyhaemoglobins and oxyhaemoglobins from leukaemic patients were studied, by Mössbauer spectroscopy.
(16) Assessment of the intensive care patient must take into account the effect of alterations of the oxyhaemoglobin dissociation curve which can either increase or diminish tissue oxygenation.
(17) There is a loosely packed beta 1 beta 2 interface burying 320 A2 of surface in oxyhaemoglobin; there is no beta 1 beta 2 interface in deoxyhaemoglobin.
(18) Incubation of tissues with oxyhaemoglobin or the induction of tolerance to GTN abolished responses occurring in Phase I but were without effect on Phase II relaxant responses.
(19) These phenomena were compared with the dichroism of oxyhaemoglobin.
(20) Methods using a single, alkaline cresolphthalein complexone reagent are most seriously affected by haemolysis due to persistence of oxyhaemoglobin.
Oxyhemoglobin
Definition:
(n.) See Hemoglobin.
Example Sentences:
(1) As monitored by in vivo near-infrared spectroscopy (NIR), no improvement was noted after 50% O2 whereas 50% O2-5% CO2 resulted in increased perfusion, an oxidation of cytochrome a,a3, an increase in oxyhemoglobin, and reduced quantities of de-oxyhemoglobin (p less than 0.01) despite a further increase in intracranial pressure.
(2) The oxidation of oxyhemoglobin by Cu(II) proceeded in two phases: (1) an initial rapid reaction (less than 30 s) followed by (2) a slower reaction that carried it to completion.
(3) We conclude that there is no significant vasodilatory compensation for moderate increases in oxyhemoglobin affinity, despite the continued presence of autoregulatory vasodilatory reserve.
(4) Resonance Raman spectra of oxyhemoglobin, deoxyhemoglobin, carboxyhemoglobin, and the corresponding myoglobin derivatives have been obtained with 7-nanosecond laser pulses at 531.8 nanometers.
(5) The authors describe the principles of noninvasive measurements of oxyhemoglobin content in the arterial blood by processing the signals obtained as a result of passing the light waves of the infrared (940 nm) and red (660 nm) wave bands through tissues.
(6) The peak conversion efficiency for oxyhemoglobin occurred at 285 nm and decreased by a factor of 100 by 315 nm.
(7) Oxyhemoglobin high concentration from red blood cells (R.B.C.)
(8) Significant subnanosecond geminate recombination is observed in oxyhemoglobin down to 150 K, while below 100 K this geminate recombination disappears.
(9) It has been clearly demonstrated that cutaneous blood vessels will be selectively damaged by a laser whose wavelength matches one of the three absorption spectral peaks of the chromophore, oxyhemoglobin, for example, 577 nm.
(10) Taken together the results support the theoretical prediction that reductants should oxidize oxyhemoglobin, and they demonstrate at least some degree of radical character to the oxy complex.
(11) On Day 3, the increase in intracellular calcium that followed repeated daily exposure to oxyhemoglobin was greater than that resulting from a single application of oxyhemoglobin (P less than 0.01 by Student's t test), but by Day 7 the elevation produced by these different approaches was similar.
(12) Lipid peroxidation arises mostly from the oxidation of oxyhemoglobin by copper as it is inhibited in RBCs with carbon monoxyhemoglobin or methemoglobin.
(13) Because of low PaO2, when awake, a fall in PaO2 during sleep brings values into the steep part of the oxyhemoglobin dissociation curve where slight changes in PaO2 result in marked changes in oxygen content.
(14) This factor is quite unstable, is not produced by cyclooxygenase, and is an activator of soluble guanylate cyclase that synthesizes cyclic GMP; its action is suppressed by antioxidants via the superoxide anions produced, potentiated by superoxide dismutase and abolished by methylene blue and oxyhemoglobin.
(15) Although 2-imidazolthiones were more reactive than 2-imidazolones in the assays using DPPH and the oxidation of oxyhemoglobin, both types of compounds may be useful as antioxidants in vivo.
(16) The effects of serum albumin on oxyhemoglobin A were essentially similar to those on oxyhemoglobin S. Deoxy- and methemoglobins were also stabilized by serum albumin.
(17) The hemoglobin in these ovarian extracts had the same peak absorbance of 414 nm characteristic of oxyhemoglobin in whole blood taken by cardiac puncture of the rats.
(18) We propose that the species responsible for the oxidation of the thiols to yield the thiyl free radicals in vivo and in vitro was the phenylhydronitroxide radical produced from the reaction of phenylhydroxylamine with oxyhemoglobin.
(19) This departure was greatest for salt-free hemoglobin solution, which may be caused by an electrical potential formed by a pH gradient in the layer as oxyhemoglobin is deoxygenated.
(20) No subject developed oxyhemoglobin desaturation during sleep.