Quality assessment of red blood cell suspensions derived from pathogen‐reduced whole blood

Vox Sanguinis ◽  
2020 ◽  
Author(s):  
Irina Kumukova ◽  
Pavel Trakhtman ◽  
Nicolay Starostin ◽  
Daria Borsakova ◽  
Anastasia Ignatova ◽  
...  
Keyword(s):  
Blood Cell ◽  
Quality Assessment ◽  
Red Blood Cell ◽  
Whole Blood ◽  
Cell Suspensions

In vitro effects of temperature on red blood cell deformability and membrane stability in human and various vertebrate species

2021 ◽  
pp. 1-10
Author(s):  
Adam Attila Matrai ◽  
Gabor Varga ◽  
Bence Tanczos ◽  
Barbara Barath ◽  
Adam Varga ◽  
...  
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Whole Blood ◽  
Mechanical Stability ◽  
Cell Deformability ◽  
Blood Samples ◽  
Effects Of Temperature ◽  
The Way ◽  
Rbc Deformability

BACKGROUND: The effects of temperature on micro-rheological variables have not been completely revealed yet. OBJECTIVE: To investigate micro-rheological effects of heat treatment in human, rat, dog, and porcine blood samples. METHODS: Red blood cell (RBC) - buffer suspensions were prepared and immersed in a 37, 40, and 43°C heat-controlled water bath for 10 minutes. Deformability, as well as mechanical stability of RBCs were measured in ektacytometer. These tests were also examined in whole blood samples at various temperatures, gradually between 37 and 45°C in the ektacytometer. RESULTS: RBC deformability significantly worsened in the samples treated at 40 and 43°C degrees, more expressed in human, porcine, rat, and in smaller degree in canine samples. The way of heating (incubation vs. ektacytometer temperation) and the composition of the sample (RBC-PBS suspension or whole blood) resulted in the different magnitude of RBC deformability deterioration. Heating affected RBC membrane (mechanical) stability, showing controversial alterations. CONCLUSION: Significant changes occur in RBC deformability by increasing temperature, showing inter-species differences. The magnitude of alterations is depending on the way of heating and the composition of the sample. The results may contribute to better understanding the micro-rheological deterioration in hyperthermia or fever.

scholarly journals Desensitization of Adrenaline-Induced Red Blood Cell H+ Extrusion in Vitro After Chronic Exposure of Rainbow Trout to Moderate Environmental Hypoxia

1991 ◽  
Vol 156 (1) ◽  
pp. 233-248 ◽  
Author(s):  
S. THOMAS ◽  
R. KINKEAD ◽  
P. J. WALSH ◽  
C. M. WOOD ◽  
S. F. PERRY
Keyword(s):  
Rainbow Trout ◽  
Blood Cell ◽  
Red Blood Cell ◽  
Whole Blood ◽  
Inverse Correlation ◽  
Adrenergic Stimulation ◽  
Plasma Adrenaline ◽  
Arterial Blood Gas ◽  
Arterial Blood

The sensitivity of red blood cell Na+/H+ exchange to exogenous adrenaline was assessed in vitro using blood withdrawn from catheterized rainbow trout (Oncorhynchus mykiss) maintained under normoxic conditions [water PO2, (PwO2)=20.66 kPa] or after exposure to moderate hypoxia (PwO2=6.67-9.33 kPa) for 48 h, which chronically elevated plasma adrenaline, but not noradrenaline, levels. Peak changes in whole-blood extracellular pH over a 30 min period after adding 50–1000 nmoll−1 adrenaline were employed as an index of sensitivity; the blood was pre-equilibrated to simulate arterial blood gas tensions in severely hypoxic fish (PaO2=2.0 kPa, PaCO2=0.31 kPa). Blood pooled from normoxic fish displayed a dose-dependent reduction in whole-blood pH after addition of adrenaline. Blood pooled from three separate groups of hypoxic fish, however, displayed diminished sensitivity to adrenaline, ranging from complete desensitization to a 60%reduction of the response. Subsequent experiments performed on blood from individual (i.e. not pooled) normoxic or hypoxic fish demonstrated an inverse correlation between the intensity of H+ extrusion (induced by exogenous adrenaline addition) and endogenous plasma adrenaline levels at the time of blood withdrawal. However, acute increases in plasma adrenaline levels in vitro did not affect the responsiveness of the red blood cell to subsequent adrenergic stimulation. The intensity of H+ extrusion was inversely related to the PaO2in vivo between 2.67 and 10.66 kPa, and directly related to the logarithm of the endogenous plasma adrenaline level. The results suggest that desensitization of Na+/H+ exchange in chronically hypoxic fish is related to persistent elevation of levels of this catecholamine. This desensitization can be reversed in vitro as a function of time, but only when blood is maintained under sufficiently aerobic conditions.

scholarly journals Characterization of erythrocyte quality during the refrigerated storage of whole blood containing di-(2-ethylhexyl) phthalate

Blood ◽  
1984 ◽  
Vol 64 (6) ◽  
pp. 1270-1276 ◽  
Author(s):  
TN Estep ◽  
RA Pedersen ◽  
TJ Miller ◽  
KR Stupar
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Whole Blood ◽  
Refrigerated Storage ◽  
Cell Integrity ◽  
Normal Morphology ◽  
Plasma Hemoglobin ◽  
Induced Changes ◽  
Ethylhexyl Phthalate

Abstract Di-(2-ethylhexyl) phthalate (DEHP) accumulates in blood brought into contact with materials utilizing this compound as a plasticizer. To determine whether this phthalate diester affects red blood cell integrity, we have compared cell morphology, plasma hemoglobin accumulation, micro-vesicle production, and the concentration of intracellular metabolites and electrolytes of erythrocytes from blood stored at 4 degrees C with and without DEHP. When sufficient emulsified DEHP was mixed with blood to give a final concentration of 300 micrograms/mL, plasma hemoglobin accumulation was reduced by an average of 70%, the percentage of cells exhibiting normal morphology was enhanced by at least 20-fold, and the volume of microvesicles released from red blood cells was reduced by 50% after 35 days of refrigerated storage compared to the values obtained from corresponding samples stored without added phthalate. Similar effects were observed regardless of whether blood was stored in nonplasticized polypropylene or tri-(2-ethylhexyl) trimellitate plasticized polyvinylchloride containers and with DEHP solubilized by a variety of emulsifiers. When 300 micrograms/mL DEHP was added to stored blood containing erythrocytes predominantly in the echinocyte conformation, many of the cells reverted to the normal discoid morphology. The addition of this quantity of DEHP to blood had no significant effect on the course of storage-induced changes in erythrocyte adenosine triphosphate (ATP), 2,3-diphosphoglycerate (2,3-DPG), sodium or potassium concentrations. The data are consistent with the hypothesis that DEHP inhibits the deterioration of the red blood cell membrane that results from the refrigerated storage of whole blood.

scholarly journals Carl Hamilton Browning, 1881-1972

1973 ◽  
Vol 19 ◽  
pp. 172-215
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Medical Training ◽  
Cell Suspensions ◽  
Social Reformer ◽  
Human Foetus ◽  
And Mathematics ◽  
Medical Bacteriology

Carl Hamilton Browning was born in Glasgow on 21 May 1881. His grandfather, the Rev. Archibald Browning of Tillicoultry was, as Professor D. F. Cappell tells me, a vigorous Chartist and social reformer as well as a noted preacher, and both his father, Hugh Hamilton Browning, a graduate in Arts and Divinity at Edinburgh University, and his mother were gifted musicians. He himself was educated at Glasgow Academy, where he was Dux in 1896-97 and triple medallist in classics, English and mathematics. He took his medical training in Glasgow University, and, as he said himself, was even before he was qualified so attracted by Robert Muir and A. R. Ferguson that he asked Muir for a ‘subject’ to work on. Muir suggested that he look into the development of granular leucocytes in the human foetus. He did it, and by the time (1905) that the paper was printed he had in 1903 graduated M.B., Ch.B. with Honours; he then applied for the Coats Scholarship; no other candidate appeared, so he enjoyed the scholarship for some months, working with Muir on haemolytic sera. His time was not heavily loaded, and gave him opportunities for seeing the run of the Department and for a postgraduate course in medical bacteriology. Apart from this his only duty was to wash red blood cell suspensions in a hand-driven centrifuge until a small electrical one was built. He also tutored several students—an activity he strongly recommended as educational.

A physiometer for simultaneous measurement of whole blood viscosity and its determinants: hematocrit and red blood cell deformability

The Analyst ◽  
2019 ◽  
Vol 144 (9) ◽  
pp. 3144-3157 ◽  
Author(s):  
Byung Jun Kim ◽  
Ye Sung Lee ◽  
Alexander Zhbanov ◽  
Sung Yang
Keyword(s):  
Blood Cell ◽  
Red Blood Cell ◽  
Blood Viscosity ◽  
Simultaneous Measurement ◽  
Whole Blood ◽  
Cell Deformability ◽  
Whole Blood Viscosity ◽  
Red Blood Cell Deformability ◽  
Rbc Deformability

In this study, a microfluidic-based physiometer capable of measuring the whole blood viscosity, hematocrit, and red blood cell (RBC) deformability on a chip is introduced.

Sign in / Sign up

Export Citation Format

Share Document