“…The resulting degree of cell adhesiveness/aggregation is probably a summarised effect of these proteins on the tendency of the cells to adhere to each other and aggregate. We have already shown that enhanced red blood cell adhesiveness/aggregation correlates significantly with the presence of enhanced fibrinogen concentrations 25 and with the degree of the patient's inflammatory response, 26 that it can be induced by the intravenous infusion of immunoglobulins, 27 and that it is abolished by plasmapheresis. 28 The possibility that there might be sex differences in the tendency of red blood cells to adhere to each other and aggregate has not been evaluated in a systematic way in the past.…”
Background: Increased red cell aggregation can be detrimental, leading to slow capillary blood flow and tissue hypoxaemia. Sex differences in the degree of erythrocyte adhesiveness/aggregation in the peripheral blood have not been clearly shown. Objectives: To determine whether there are sex differences in the expression of erythrocyte adhesiveness/ aggregation in the peripheral blood in individuals with atherothrombotic risk factors and in apparently healthy people. Methods: From a cohort of 965 participants in the Tel Aviv Medical Centre inflammation survey, 192 pairs of different sex were matched for age, body mass index, hip and waist circumferences, cardiovascular risk factors, and the intake of active cardiovascular drugs. Results: Women had an enhanced degree of red cell aggregation (p , 0.0005) as well as increased concentrations of inflammation sensitive proteins including fibrinogen and C reactive protein. Women had a lower haemoglobin concentration than men, but this did not affect the degree of erythrocyte adhesiveness/aggregation. Conclusions: The significant increase in red blood cell adhesiveness/aggregation in the peripheral blood of women with atherothrombosis could be relevant to the more eventful course that some women experience during and following acute ischaemic disease.
“…The resulting degree of cell adhesiveness/aggregation is probably a summarised effect of these proteins on the tendency of the cells to adhere to each other and aggregate. We have already shown that enhanced red blood cell adhesiveness/aggregation correlates significantly with the presence of enhanced fibrinogen concentrations 25 and with the degree of the patient's inflammatory response, 26 that it can be induced by the intravenous infusion of immunoglobulins, 27 and that it is abolished by plasmapheresis. 28 The possibility that there might be sex differences in the tendency of red blood cells to adhere to each other and aggregate has not been evaluated in a systematic way in the past.…”
Background: Increased red cell aggregation can be detrimental, leading to slow capillary blood flow and tissue hypoxaemia. Sex differences in the degree of erythrocyte adhesiveness/aggregation in the peripheral blood have not been clearly shown. Objectives: To determine whether there are sex differences in the expression of erythrocyte adhesiveness/ aggregation in the peripheral blood in individuals with atherothrombotic risk factors and in apparently healthy people. Methods: From a cohort of 965 participants in the Tel Aviv Medical Centre inflammation survey, 192 pairs of different sex were matched for age, body mass index, hip and waist circumferences, cardiovascular risk factors, and the intake of active cardiovascular drugs. Results: Women had an enhanced degree of red cell aggregation (p , 0.0005) as well as increased concentrations of inflammation sensitive proteins including fibrinogen and C reactive protein. Women had a lower haemoglobin concentration than men, but this did not affect the degree of erythrocyte adhesiveness/aggregation. Conclusions: The significant increase in red blood cell adhesiveness/aggregation in the peripheral blood of women with atherothrombosis could be relevant to the more eventful course that some women experience during and following acute ischaemic disease.
“…Thus, the erythrocytes, which are kept in their native milieu, surrounded by the various sticky proteins, are used to sense the effect of this stickiness [32,33]. This is the essence of the ERYTHROSENSE methodology and has been repeatedly shown (although by using another way of measuring the degree of cell adhesiveness/aggregation) to correlate significantly with the degree of inflammation [34] as well as the markers of the acute-phase response [35,36]. Moreover, we have recently shown that the erythrocyte aggregation in our slide test corresponds to significant inter-erythrocyte cohesive forces as examined in a shear-dependent cell flow property analyzer [37].…”
The multiplicity of components of the metabolic syndrome is associated with enhanced erythrocyte aggregation, probably related to the presence of multiple adhesive macromolecules in the peripheral blood. The enhanced aggregation might contribute to capillary slow flow, tissue deoxygenation as well as vasomotor tone changes in the presence of multiple components of this syndrome.
“…The test is based on the observation that multiple acute phase response proteins are involved in the induction and/or maintenance of increased erythrocyte aggregability (Weng et al ., 1996). We have recently shown that a patient's erythrocyte sedimentation rate (ESR) can be predicted with an acceptable degree of accuracy using this slide test (Rotstein et al ., 2001).…”
Section: Introductionmentioning
confidence: 99%
“…The present study is an extension of our previous work (Rotstein et al ., 2001). We now describe two models which support the notion that a reasonable estimate of the intensity of the humoral acute phase response can be obtained from the results of the EAAT.…”
We have developed a simple slide test and image analysis to reveal the state of erythrocyte adhesiveness/aggregation in the peripheral blood of patients with various degrees of the humoral acute phase response. The significant correlation between the results of the erythrocyte adhesiveness/aggregation test (EAAT), the erythrocyte sedimentation rate and fibrinogen concentration support the notion that it is possible to use the EAAT as a marker for the intensity of the acute phase response. Within a group of 860 individuals, we were able to differentiate effectively between groups of patients with a different intensity of humoral acute phase response. The present study confirms previous observations that support the applicability of the EAAT to routine clinical practice.
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