alexa A Comparative Approach to Measure Elasticity of Whole B

Rheology: Open Access
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article

A Comparative Approach to Measure Elasticity of Whole Blood by Small Amplitude Oscillation

Ursula Windberger1*, Birgit Stoiber1, Christina Pöschl1 and René van den Hoven2

1Department Biomedical Research, Medical University of Vienna, Austria

2Clinical Unit of Equine Internal Medicine, Veterinary University Vienna, Austria

*Corresponding Author:
Ursula Windberger
Decentralized Biomedical Facilities
Department Biomedical Research
Borschkegasse 8a, 1090 Vienna, Austria
Tel: +43(0)1-40160-37103
E-mail: [email protected]

Received date: November 18, 2016; Accepted date: December 23, 2016; Published date: December 31, 2016

Citation: Windberger U, Stoiber B, Pöschl C, van den Hoven R (2017) A Comparative Approach to Measure Elasticity of Whole Blood by Small Amplitude Oscillation. Rheol: open access 1:103.

Copyright: © 2017 Windberger U, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

In the past, mammalian blood was characterized by flow curves to calculate the dynamic shear viscosity of blood. It was found out that whole blood viscosity (WBV) is very divers among the animal kingdom, predominantly at low shear stresses that allow red blood cell (RBC) aggregation. RBC aggregation might be the most significant factor for blood elasticity as well. To verify this hypothesis, we tested whole blood from species with high (horse), medium (man) and low (sheep) RBC aggregability by small amplitude oscillation in CSS-mode. Blood samples were hematocrit (HCT) adjusted (40%, 50%, 60%) and tested at 7°C, 22°C and 37°C. Storage modulus (G´) increased with RBC aggregability and HCT, but decreased with temperature, as expected. Interestingly, the gradient of the G´-increase with HCT was species-specific. The lower dependency of G´ on the equine HCT value could be a benefit during physical performance when high numbers of RBCs are released from the spleen. In sheep, a HCT-threshold had to be overcome before elasticity of the blood sample could be measured, suggesting that the cohesive forces between RBCs, and between RBCs and plasma molecules must be very low. The frequencies for tests under quasi-static condition were in a narrow range around the physiologic heart rate of the species. In horse, time-dependent influences concurred at frequencies lower than 3 rad.s-1 probably due to sedimentation of RBC aggregates. In conclusion, elasticity of blood depends not only on the amount of blood cells, but also on their mechanical and functional properties.

Keywords

Share This Page

Additional Info

Loading
Loading Please wait..
 
Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords