Effects of astaxanthin (AX) derived from H. pluvialis on human blood rheology were investigated in 20 adult men with a single-blind method. The experimental group was 57.5 +/- 9.8 years of age and the placebo group was 50.8 +/- 13.1 years of age. A blood rheology test that measures whole blood transit time was conducted using heparinized blood of the volunteers by a MC-FAN apparatus (microchann...

The flow properties of blood play significant roles in tissue perfusion by contributing to hydrodynamic resistance in blood vessels. These properties are influenced by pathophysiological processes, thereby increasing the clinical relevance of blood rheology information. There is well-established clinical evidence for impaired blood fluidity in humans of advanced age, including enhanced plasma a...

Blood rheology, that embraces the study of the de formation and flow of the blood, is an outbursting science. There are reasons to think that the develop ment of blood rheology (or Hemorheology) will imply deep changes in medical thought concerning the diag nosis, prognosis or therapy of several clinical disor ders. Hemorheology is not a specific field of medicine or of any of the classic speci...

Blood is a two-phase suspension of formed elements (i.e., red blood cells [RBCs], white blood cells [WBCs], platelets) suspended in an aqueous solution of organic molecules, proteins, and salts called plasma. The apparent viscosity of blood depends on the existing shear forces (i.e., blood behaves as a non-Newtonian fluid) and is determined by hematocrit, plasma viscosity, RBC aggregation, and ...

1. Blood rheology has been quantified by measuring blood and plasma viscosity, packed cell volume (PCV), erythrocyte filterability and erythrocyte aggregation in forty-eight voluntary vegetarians and compared with matched controls. 2. Results show that in vegetarians, values for PCV were lower than those in controls, leading to reduced native blood viscosity. In addition PCV-standardized blood ...

There are many conditions where it is useful for anesthetists to have a knowledge of blood rheology.Blood rheology plays an important role in numerous clinical situations.Hemorheologic changes may significantly affect the induction and recovery times with anesthetic agents.But also, hemorheologic factors are directly or indirectly affected by many anesthetic agents or their metabolites.In this ...