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Filterability of density-separated equine erythrocytes, neutrophils and mononuclear cells

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Abstract

The filterability of density-separated fractions of red blood cells (RBC), neutrophils and mononuclear cells was evaluated to determine their relative contribution to resistance to blood flow. Increasing RBC density was associated with smaller cell size, greater haemoglobin concentration, and improved filterability. Filtration of RBC, after adrenaline-induced splenic contraction, failed to identify a population of non-deformable RBC. Leucocytes filtered less readily compared to RBC. Neutrophils and mononuclear cells produced similar initial pressure increments but mononuclear cells had a greater potential to plug pores in the filters. Our results indicate both RBC and leucocytes may contribute to resistance to blood flow. A subpopulation of non-deformable RBC could not be identified in circulating blood or in blood after adrenaline-induced splenic contraction.

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References

  • Andrews FM, Korenek NL, Sanders WL (1992) Viscosity and rheologic properties of blood from clinically normal horses. Am J Vet Res 53:966–970

    Google Scholar 

  • Baar S (1976) A convenient and reproducible filtration technique for the determination of erythrocyte flexibility. Br J Haematol 34:69–78

    Google Scholar 

  • Boucher JH (1987) The equine spleen: source of dangerous red blood cells. J Eq Vet Sci 7:140–142

    Google Scholar 

  • Boucher JA (1988) Exercise-induced echinocytosis. In: Jones WE (ed) Equine sports medicine. Lea & Febiger, Philadelphia pp 43–52

    Google Scholar 

  • Boucher JH, Ferguson EW, Wilhemsen CL et al. (1981) Erythrocyte alteration during endurance exercise in horses. J Appl Physiol 51:131–134

    Google Scholar 

  • Chein S, Schmalzer EA, Lee MML et al. (1983) Role of white blood cells in filtration of blood cell suspensions. Biorheology 20:11–27

    Google Scholar 

  • Corash LM, Piomelli S, Chen HC et al. (1974) Separation of erythrocytes according to age on a simplified density gradient. J Lab Clin Med 84:147–151

    Google Scholar 

  • Coyne CP, Carlson GP, Spensley MS (1990) Preliminary investigation of alterations in blood viscosity, cellular composition, and electrophorsis of plasma protein fraction profile after competitive racing activity in Thoroughbred horses. Am J Vet Res 51:1956–1963

    Google Scholar 

  • Erickson BK, Kubo B, Hiraga A et al. (1993) Hemodynamic consequences of splenectomy in the horse. (abstract) J Am Coll Sports Med 25:S7

    Google Scholar 

  • Fedde MR, Ho HH, Woods SC (1993) Oxygen transport in exercising horses: importance of rheological properties of blood. In: Eduardo J, Bicudo PW (eds) The vertebrate gas transport cascade: adaptations to environment and mode of life. CRC Press, London, pp 200–207

    Google Scholar 

  • Frojmovic MM (1973) Quantitative parameterization of the light transmission properties of citrated, platelet-rich plasma as a function of platelet and adensoine diphosphate concentration and temperature. J Lab Clin Med 82:137–153

    Google Scholar 

  • Fu Z, Costello ML, Tsukimoto K (1992) High lung volume increases stress failure in pulmonary capillaries. J Appl Physiol 73:123–133

    Google Scholar 

  • Geor RJ, Weiss DJ, Burris SM et al. (1992) Effects of furosemide and pentoxyfylline on blood flow properties in horses. Am J Vet Res 53:2043–2049

    Google Scholar 

  • Kooshesh F, Evans SA, Jones JG et al. (1991) Filterability of leukocytes in purified suspensions and in diluted whole blood. Clin Hemorheol 11:79–89

    Google Scholar 

  • Koursouris D, Delatour-Hanss M. (1985) Physico-chemical factors of erythrocyte deformability. Biorheology 22:119–132

    Google Scholar 

  • Leblond PF, Coulombe L (1979) The measurement of erythrocyte deformability using micropore membranes. J Lab Clin Med 94:133–143

    Google Scholar 

  • Manohar M (1993) Pulmonary artery wedge pressure increases with high-intensity exercise in horses. Am J Vet Res 54:142–146

    Google Scholar 

  • McClay CB, Weiss DJ, Smith CM et al. (1992) Evaluation of hemorheologic variables as implications for exercise-induced pulmonary hemorrhage in racing thoroughbreds. Am J Vet Res 53:1380–1385

    Google Scholar 

  • McKeever KH, Hinchcliff KW, Reed SM et al. (1993) Plasma constituents during incremental treadmill exercise in intact and spelnectomized horses. Eq Vet J 25: 233–236

    Google Scholar 

  • Moessmer G, Meiselman HJ (1990) A new micropore filtration approach to the analysis of white cell rheology. Biorheology 27:829–848

    Google Scholar 

  • Reinhart WH, Cheen S (1987) The time course of filtration test as a model for microvascular plugging by white cells and hardened red cells. Microvasc Res 34:1–12

    Google Scholar 

  • Reinhart WH, Usami S, Schmalzer EA (1984) Evaluation of red blood cell filterability test: influence of pore size, hematocrit level, and flow rate. J Lab Clin Med 104:501–516

    Google Scholar 

  • Schmalzer EA, Chein S (1984) Filterability of subpopulations of leukocytes; effects of pentoxifylline. Blood 64:542–546

    Google Scholar 

  • Smith JE, Erickson HH, Debowes RM (1989) Changes in circulating equine erythrocytes induced by brief, high-speed exercise. Eq Vet J 21:444–446

    Google Scholar 

  • Somer T, Meiselman HJ (1993) Disorders of blood viscosity. Ann Med 25:31–39

    Google Scholar 

  • Stuart J, Nash GB (1990) Red cell deformability and haematologic disorders. Blood Rev 21:141–147

    Google Scholar 

  • Tsukimoto K, Mathieu-Costello O, Orediletto R (1991) Ultrastructural appearance of pulmonary capillaries at high transmural pressures. J Appl Physiol 71:573–582

    Google Scholar 

  • Weiss DJ, Kraemer R, Schmit K (1986) Isolation of granulocytes and mononuclear cells from the blood of dogs, cats, horses and cattle. Vet Clin Pathol 18:33–36

    Google Scholar 

  • Weiss DJ, Geor RI, Burris SM et al. (1992a) Effects of pentoxifylline on equine neutrophil function and flow properties. Can J Vet Res 56:313–317

    Google Scholar 

  • Weiss DJ, Geor RJ, Smith CM et al. (1992b) Furosemide-induced electrolyte depletion associated with echinocytosis in horses. Am J Vet Res 53:1769–1772

    Google Scholar 

  • Weiss DJ, Geor RJ, Smith CM (1994b) Effects of echincytosis on equine hemorrheology and exercise performance. Am J Vet Res 55:204–210

    Google Scholar 

  • Weiss DJ, Evanson O, Geor RJ (1994a) Filterability of equine erythrocytes and whole blood: effects of haematocrit, pore size and flow rate. Comp Haematol Int 4:11–16

    Google Scholar 

  • West JB, Mathieu-Costello O, Logemann RB (1992) Stress failure of pulmonary capillaries in racehorses with exercise-induced pulmonary hemorrhage (abstract 6438). FASEB J 6:A2048

    Google Scholar 

  • Yamaguchi S, Nimi H (1989) Experimental study of filterability of polymorphonuclear leukocyte suspensions. Biorheology 26:989–1002

    Google Scholar 

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Weiss, D.J., Evanson, O.A. & Geor, R.J. Filterability of density-separated equine erythrocytes, neutrophils and mononuclear cells. Comp Haematol Int 4, 192–197 (1994). https://doi.org/10.1007/BF00185172

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  • DOI: https://doi.org/10.1007/BF00185172

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