Results 131 to 140 of about 1,164 (177)
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Oxyhemoglobin affinity in acute pancreatitis
Journal of Surgical Research, 1977Abstract An altered oxyhemoglobin affinity is noted early in the course of patients with acute pancreatitis. This does not appear to correlate to routinely determined biochemical parameters. In vitro studies indicate that fatty acids of C 16 –C 20 length increase oxyhemoglobin affinity.
A G, Greenburg, L, Terlizzi, G W, Peskin
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Binding of 2,3-diphosphoglycerate to oxyhemoglobin
Biochemical and Biophysical Research Communications, 1969Abstract Extensive binding of 2,3 diphosphoglycerate to oxyhemoglobin is demonstrated both by diafiltration and by Sephadex gel filtration. The average concentration of both 2,3 DPGA and hemoglobin in human erythrocytes is about 5 mM; a portion of the 2,3 DPGA remains bound to oxyhemoglobin and cannot be removed by Sephadex gel filtration.
J, Luque, D, Diederich, S, Grisolia
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Decarboxylation of 3,4-dihydroxyphenylalanine by oxyhemoglobin
Biochemical and Biophysical Research Communications, 1972Abstract A lysate of red blood cells catalyzes the decarboxylation of 3,4-dihydroxyphenylalanine. This activity appears to be due to a reaction with oxyhemoglobin and not the presence of aromatic L amino acid decarboxylase in erythrocytes.
H, Yamabe, W, Lovenberg
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Oxyhemoglobin inhibition of acetylcholinesterase activity
Neuroscience Letters, 1986The effects of human oxyhemoglobin (HbO2), human methemoglobin (MetHb), and porcine serum albumin (PSA) on the activity of acetylcholinesterase (AChE) isolated from Electrophorus electricus were examined. HbO2 produced a dose-dependent reduction in AChE activity. Fifty percent of activity was obtained at 5 microM HbO2, while 95% inhibition was obtained
M D, Linnik, T J, Lee
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The caprine oxyhemoglobin dissociation curve
Research in Veterinary Science, 2006The caprine oxyhemoglobin dissociation curve has not been previously defined. Blood from 10 healthy goats was equilibrated in a tonometer with calibrated gas mixtures of oxygen at concentrations of 95%, 21%, 13%, 12%, 10%, 9%, 8%, 5%, 4%, and 2.5% , 5% carbon dioxide, balance nitrogen.
Haskins, S. C., Rezende, M. L.
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Role of Water in the Stability of Oxyhemoglobin
Science, 1959Electron exchange involving the valence states of iron occurs via water bridges. Molecular oxygen reversibly displaces the sole coordinated water of the ferrous iron in hemoglobin, and, in the absence of this ready path for electron transfer, the oxygen is transported without oxidation of the ferrous iron of hemoglobin.
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Understanding the oxyhemoglobin dissociation curve
Critical Care Nurse, 1995The oxyhemoglobin dissociation curve helps critical care nurses to better understand how various factors affect the oxygenation status of patients. Disease processes or treatment modalities that may cause shifts in the curve should be identified and the effects of the increased or decreased affinity assessed.
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The Oxyhemoglobin Dissociation Curve in Liver Cirrhosis
Chest, 2006To trace the entire oxyhemoglobin dissociation curve (ODC) in a cohort of cirrhotic patients in stable condition who were candidates for orthotopic liver transplantation (OLT).Prospective cohort study.A large academic hospital.We traced the entire ODC in whole blood in standard conditions (pH 7.4; PCO2, 40 mm Hg; temperature, 37 degrees C) for 50 ...
Thierry, Clerbaux +6 more
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HEMOGLOBIN SOLUTION AND THE OXYHEMOGLOBIN DISSOCIATION CURVE
The Journal of Trauma: Injury, Infection, and Critical Care, 19751) A study was carried out to determine the oxyhemoglobin dissociation curve of stroma-free hemoglobin solution and factors which influence it, (pH; 2,3 DPG). 2) To simulate acute volume replacement, dilution experiments, in vitro, were performed employing both hemoglobin solution and Ringer's lactate in whole blood.
A G, Greenburg +4 more
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A new method for the measurement of percent oxyhemoglobin
Journal of Applied Physiology, 1975A new method is presented for the spectrophotometric determination of percent oxyhemoglobin (percent saturation) in whole blood. The method is based on a theory of light absorption and scattering by particulate suspensions and requires the measurement of optical densities (D) of blood at three closely spaced wavelengths. The contribution of scattering
R N, Pittman, B R, Duling
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