Seetharaman Swarnamani

Dextran

erythrocyte aggregation

Magnetic field

methodology

Ultrasound

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

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IIT Madras

Analysis of erythrocyte aggregation mechanism in presence of dextran and magnetic field by ultrasound scattering in blood.

Biorheology

The hemorheological parameters, erythrocyte aggregation and deformability are determined in jaundice patients and are compared with that of healthy subjects. The aggregation process is determined by sequential analysis of the He-Ne laser transmission data after passing through erythrocyte suspension at hematocrit 5%. The analysed data is represented by aggregation parameters-aggregate size index, aggregate sedimentation time index, total number of fluctuations, time required for completion of process, effective number of cells and effective cellular sedimentation duration. The erythrocyte deformability is determined by measurement of passage time (reciprocal of deformability) of erythrocyte suspension in phosphate buffered saline at hematocrit 6% through cellulose membranes. The observations show that the aggregation process in jaundice starts earlier, form compact structures which move faster initially and thus reducing the effective number of cells in the observation volume at all time intervals compared to that of normal suspensions. The application of inhomogeneous magnetic field to erythrocyte suspension produces significant effect in total number of fluctuations in normals whereas no such change is observed in jaundice patients. The deformability of the cells is decreased. A combination of these alterations in erythrocyte deformability and aggregation may contribute to increase blood viscosity. © 1995 Elsevier Science Ltd.

Clinical Hemorheology and Microcirculation

Influence of jaundice on aggregation process and deformability of erythrocytes

Analysis of erythrocyte aggregation mechanism in presence of dextran and magnetic field by ultrasound scattering in blood

Journal	Biorheology
ISSN	0006355X
Open Access	No