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2.
Bull Exp Biol Med ; 152(5): 646-52, 2012 Mar.
Artigo em Inglês, Russo | MEDLINE | ID: mdl-22803156

RESUMO

Complex multifactor diseases are characterized by enhanced formation of toxic free radicals. The developed apparatuses based on electron paramagnetic resonance or nuclear magnetic resonance electrodialysis are therapeutic tools playing the role of atomic-molecular "artificial kidney" excreting anion and cation radicals from the organism. These tools can be used in medicine in combination with drug therapy to protect cells from toxic action of free radicals produced during metabolic neutralizing deactivation of exogenous toxic substances invading the organism.


Assuntos
Diagnóstico por Imagem/métodos , Espectroscopia de Ressonância de Spin Eletrônica/métodos , Espectroscopia de Ressonância Magnética/métodos , Animais , Diagnóstico por Imagem/instrumentação , Espectroscopia de Ressonância de Spin Eletrônica/instrumentação , Radicais Livres/metabolismo , Humanos , Rins Artificiais , Magnetoterapia , Campos Magnéticos , Espectroscopia de Ressonância Magnética/instrumentação , Lipídeos de Membrana/metabolismo , Camundongos , Diálise Renal/instrumentação , Diálise Renal/métodos
19.
Biol Bull Acad Sci USSR ; 7(5): 323-30, 1980.
Artigo em Inglês | MEDLINE | ID: mdl-7317511

RESUMO

In biological systems nonuniformity of magnetic susceptibility, magnetic heterogeneity, is a reflection of their physical-chemical and morphological heterogeneity, A characteristic value of heterogeneity is delta K approximately 10(-6)-10(-7) CGS units, a quantitative measurement of susceptibility of cells and other small objects, may give qualitatively new information about their life processes. Patterns and features of movement of small biological objects and liquids affected by magnetic forces were studied. A method was developed for measuring magnetic susceptibility of single microobjects based on observation of movement of the objects in a strong heterogeneous field with parameters (formula: see text) grad H2/2 approximately 10(9)-10(10) Oe2/cm. This method does not require knowing the distribution of the field along the path of movement of the particles, and does not require preliminary calibration. Movement of human erythrocytes, rat hepatocytes, and starch granules in liquids at a point of entry into a gap with the field was observed experimentally. With sufficiently large fields Ho approximately (1-2) x 10(4) Oe, the value of the magnetic force was enough to change the rate of sedimentation movement of the objects appreciably (up to stopping it). This made it possible to compute the value delta K for cells approximately 10(-7)-10(-8) CGS units and to obtain the value of K for starch granules (-0.80 x 10(-6) cGS units). In connection with the fact that sensitivity to gravity in plants is coupled with a disturbance of the intracellular starch granules under the influence of gravity, certain problems of stimulating the effect of gravity on plants by magnetic forces were studied. Noncontact force effect on magnetically heterogeneous biological objects is a promising instrument for biophysical studies.


Assuntos
Eritrócitos/fisiologia , Fígado/fisiologia , Magnetismo , Animais , Movimento Celular , Humanos , Matemática , Modelos Biológicos , Ratos
20.
Biol Bull Acad Sci USSR ; 7(3): 223-8, 1980.
Artigo em Inglês | MEDLINE | ID: mdl-7317510

RESUMO

Questions of the identification of the type of pharmacological activity of physiologically active substances (PAS) with a receptor type of action under conditions of screening are examined. IN accordance with current concepts of the theory of the recognition of modes, the type of action of PAS was identified by establishing a set of criteria ("vectors of modes") characteristic of the effect of known substances and by selecting methods of comparing them with the vectors of the modes of the compounds being tested. Test parameters recorded by the the functional multiparametric method permitting identification of the type of the effects and an evaluation of their quantitative manifestations with the framework of a single experimental approach were used as the unknown set of criteria. The method of describing the relative change in the parameters from the dose as the vectors of action was used and the function of proximity (similarity).


Assuntos
Preparações Farmacêuticas/classificação , Receptores de Droga/metabolismo , Animais , Avaliação Pré-Clínica de Medicamentos/métodos , Epinefrina/farmacologia , Norepinefrina/farmacologia , Consumo de Oxigênio/efeitos dos fármacos , Fentolamina/farmacologia , Propranolol/farmacologia , Ratos
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