On an optical effect in blood flow

Levtov, V A; Popel, Aleksander S.; Regirer, S. A.; Shadrina, N. Kh.

doi:10.1007/bf01019821

Cited by 17 publications

(28 citation statements)

References 3 publications

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“…During the 15-minute irradiation there was found out that the irradiation of THz-band electromagnetic waves of 150.176-150.664 GHz nitrogen oxide occurrence on animals under the immobilization stress displayed total restoration of blood viscosity up to the level of the animals from the control group on all of the rates-of-shear typical to lesser, medium and large-bore arterial vessels [28,29]. This is evident from the fact that there are no statistically-valid differences in the indices in the control group, and the fact of the statistically-valid differences of a high degree comparing with the analogical groups with the acute stress ( Table 1).…”

Section: Resultsmentioning

confidence: 97%

“…Blood rheological properties, as it is known, are characterized by the flow conditions when there is the blood flow determined by the geometry of the vessel and differential arteriovenous pressure, flow properties of blood corpuscles (erythrocytes mostly): their deformability and aggregation, interaction with high molecular weight proteins and all osmotic components, blood flow property [26,[28][29][30]. It is well known that blood plasma proteins influence the erythrocytes deformability and aggregation.…”

Section: Discussionmentioning

confidence: 99%

“…The given band was chosen because blood viscosity at lowrate-of-shear (up to 10-20 sec ) is typical to microvasculature, to lesser and medium arteries in 20-100 sec -1 interval, and high-rateof-shear (more than100-150 sec -1 ) mold the blood-stream in largebore arterial vessels [28,29]. Erythrocytes aggregability and deformability, their form and size influence much on blood viscosity, especially in vessels with low-rate-of-shear (microcirculation).…”

Section: Methodsmentioning

confidence: 99%

“…Erythrocytes aggregability and deformability, their form and size influence much on blood viscosity, especially in vessels with low-rate-of-shear (microcirculation). These processes are the base of the nonNewtonian blood behavior that is to determine blood viscosity dependence on the rate-of-shear [28,29]. The blood viscosity increases much at the rate-of-shear reduction below 10 sec -1 , which is connected with reversible red cells adhesion.…”

Section: Methodsmentioning

confidence: 99%

“…Since this moment blood behaves as a non-Newtonian fluid -the blood viscosity becomes constant, symptomless (aorta, capillaries) [28,29].…”

Section: Methodsmentioning

confidence: 99%

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Restoration of blood rheological properties with the help of THz-band electromagnetic waves of nitrogen oxide molecular spectrum occurrence

Киричук¹,

Антипова²

2013

RusOMJ

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Abstract:A continuing relevance of the study is in researching of new non-drug methods of stress traumas correction. Stress is the main reason of different diseases and, first of all, of a cardiovascular system failure. The study aims the researching of the effect of electromagnetic waves of 150.176-150.664 GHz nitrogen oxide molecular and absorption spectrum occurrence. This is the most important natural regulator of endocellular interactions; it also influences the rheological blood indices in experimental stress-reaction of white malerats. The blood rheological properties research was organized with the help of the rotation viscosimeter with a free-floating cylinder "АКР-2" [trasliteration from Russian: "a ka er 2"]. The result of the experiments displayed that: 1) the exposure of electromagnetic waves of 150.176-150.664 GHz nitrogen oxide molecular and absorption spectrum occurrence is able to regenerate (depending on a time mode) acute stress-dependent blood viscosity defects and the functional erythrocytes activity -their deformability and aggregation; 2) a 5-minute exposure of electromagnetic waves of the same frequencies band does not have influence with the stress-damaged blood viscosity and functional erythrocytes activity; 15-minute and 30-minute modes of exposure of THz-band electromagnetic waves of 150.176-150.664 GHz nitrogen oxide are effective and totally regenerate stress-dependent blood viscosity defects and functional erythrocytes activity -their deformability and aggregation.Keywords: hemorheology, electromagnetic exposure, THz-band, nitrogen oxide, erythrocytes, viscosity. IntroductionStress situations (physical and psychological overstrains, emotional overloads) are the most important causative factors leading to a cardiovascular system pathology. It is commonly known that all of these factors are stress-factors; they cause general adaptation syndrome or the stress-reaction. This is accompanying by the amount of the complex of syndromeshypertensive disease, hypercoagulability, hyperlipidaemia, depression and agitated state, cardiovascular system failure, immunodeficiency [1]. Nitrogen oxide is the prime natural regulator of endocellular interactions [2][3][4][5]. It is a neuromediator, potent hemostasis factor, antiaggregant, endogenic vasodepressor [3,[6][7][8], and it fulfils many important functions in an organism. It is indicated that nitrogen oxide has a stress-limiting effect [9].Nowadays much attention is given to the point of the interaction of biological objects with GHz nitrogen oxide molecular and absorption spectrum occurrence [10][11][12].THz-therapy can be a new perspective non-drug method in treatment of many diseases [13]. The THz-band (100GHz -10THz) is interesting by having molecular and absorption spectrum occurrence of the major cell metabolites (NO, O2, CO2, CO, OHetc.) [13].

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Section: Resultsmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…Since this moment blood behaves as a non-Newtonian fluid -the blood viscosity becomes constant, symptomless (aorta, capillaries) [28,29].…”

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Restoration of blood rheological properties with the help of THz-band electromagnetic waves of nitrogen oxide molecular spectrum occurrence

Киричук¹,

Антипова²

2013

RusOMJ

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Correction of the high blood viscosity syndrome by a mixture of diquertin and ascorbic acid in vitro and in vivo

Mb¹,

Алиев²,

Maslov³

et al. 2003

Phytotherapy Research

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Diquertin was shown to diminish blood viscosity, to decrease the aggregation of erythrocytes, and to increase their deformability using a model of the high blood viscosity syndrome in vitro. A mixture of Diquertin with Ascorbic Acid was more effective in improving rheological indicators of blood, then either Diquertin or Tanakan. On a model of chronic brain ischemia, which is accompanied by significant deterioration of the rheological properties of blood, it was shown that a therapy with a mixture of Diquertin and Ascorbic Acid decreases the expression of the high blood viscosity syndrome.

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Antiedematous activity of cerebrocrastin cerebral ischemia

Vaizova

Плотникова

1995

Bull Exp Biol Med

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The effect of a course of cerebrocrast, a 1,4-dihydropyridine derivative, on brain edema (as shown by impedometry) and cerebral tissue microvascularization in ischemia caused by ligation of the left common carotid artery and 50% restriction of the bloodflow in the right common carotid artery is studied in Wistar rats. Cerebrocrast is found to appreciably limit the development of brain tissue edema and to improve the status of microvessels by reducing the number of sharply constricted nonfunctioning capillaries and increasing the number of capillaries of 4 ~t and more in diameter. Pronounced antioxidative effects of cerebrocrast in transitory cerebral ischemia are demonstrated. Key Words: cerebrocrast; brain ischemia; brain edema; microcirculation; lipid peroxidationRecent experimental and clinical data indicate that the effect of Ca antagonists belonging to the 1,4-dihydropyridines, which is associated with functional protection of the brain, can be manifested irrespective of their influence on the blood supply to the brain [13,14]. For example, a course of treatment with cerebrocrast (CC), a 1,4-dihydropyridine derivative, administered to alert rats after the induction of brain ischemia was associated with a positive impact on the bioelectrical activity of the cerebral cortex which anticipated the recove l i of the blood supply to the respective brain areas [2]. Bearing in mind the antiedematous effect of these drugs under conditions of ischemic edema of the brain [9,15], we examined the effect of CC on the time course of edematous swelling of the cerebral cortex in alert rats on a model of cerebral ischemia and studied some mechanisms of this effect. MATERIALS AND METHODSExperiments were carried out on male Wistar rats weighing 220 to 270 g. The degree of edematous swelling of brain tissue in alert rats was assessed by the method of impedance recording in our modification. For this purpose, bipolar platinum electrodes were implanted in 18 animals (6 controis and 12 experimental rats) under narcosis (sodium ethaminal in a dose of 50 mg/kg intraperitoneally) 6-7 days before the experiment. Complete impedance and its constituents were recorded with an 1-2 impedometer. The microcirculatory bed was examined in 18 rats (6 sham-operated, 6 controls, and 6 experimental) by the modified calcium adenosine triphosphate method [8]. With reference to the mean diameter of red cells and their deformability [3], capillaries 2+1 ~t in diameter were considered as severely constricted and nonfunctioning.Brain ischemia in control and experimental rats of the above series was reproduced under ether narcosis by complete ligation of the left common carotid artery and restriction of the bloodflow in

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On an optical effect in blood flow

Cited by 17 publications

References 3 publications

Restoration of blood rheological properties with the help of THz-band electromagnetic waves of nitrogen oxide molecular spectrum occurrence

Restoration of blood rheological properties with the help of THz-band electromagnetic waves of nitrogen oxide molecular spectrum occurrence

Correction of the high blood viscosity syndrome by a mixture of diquertin and ascorbic acid in vitro and in vivo

Antiedematous activity of cerebrocrastin cerebral ischemia

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