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Your search keyword '"R. Teyssier"' showing total 7 results
Start Over Author "R. Teyssier" Journal comptes rendus des seances de la societe de biologie et de ses filiales
7 results on '"R. Teyssier"'

1. [Liquefaction of human sperm by a nuclear magnetic resonance technic. Effect of temperature]

Author

M, Teyssier, R, Teyssier, and J C, Czyba

Subjects
Male, Magnetic Resonance Spectroscopy, Time Factors, Semen, Temperature, Humans, Proteins
Abstract

An investigation of the liquefaction of human semen was performed using the technique of Nuclear Magnetic Resonance, by measuring the time of spin-spin proton relaxation. Measurements which were made at 24 degrees C and 37 degrees C over a 15-day period showed that significant degradation processes and protein transformations occurred during the first 3-5 days. Different phases of these processes were identified.

Published
1986

2. [Erythrocyte-plasma water exchange studied by nuclear magnetic resonance spin-spin (T2) relaxation. Relation between the time the water molecule stays in the erythrocyte and its volume]

Author

R, Teyssier and J O, Peyrin

Subjects
Plasma, Cell Membrane Permeability, Erythrocytes, Magnetic Resonance Spectroscopy, Time Factors, Body Water, Humans
Abstract

A simple, precise and rapid pulse nuclear magnetic resonance technique for measuring the rate of water exchange across the erythrocyte membrane is presented. The effects of cell volume on cell water lifetime may be eliminated by the introduction of a cell water diffusion coefficient. This parameter is applied to the study of eleven blood samples.

Published
1986

3. [In vitro differentiation of inflammatory and non-inflammatory states of the synovial fluid by magnetic protonic relaxation]

Author

R, Teyssier, F, Colson, and M, Teyssier

Subjects
Diagnosis, Differential, Inflammation, Arthritis, Synovial Fluid, Humans, In Vitro Techniques, Magnetic Resonance Imaging
Abstract

The differentiation between inflammatory and non inflammatory states has been performed using Nuclear Magnetic Resonance (NMR) in vitro by measuring relaxation times T1 and T2 in 84 synovials fluids obtained from various rheumatologic diseases. The results show that the T1/T2 ratio is more sensitive to distinguish these two situations rather than the isolated T1 or T2 values. In particular, high values of T1/T2 ratio are found in septic arthritis.

Published
1987

4. [Modifications, due to nutrition, of methyl and methylene 1H NMR signals in human plasma and normal serum samples].

Author

Teyssier R, Fenet B, Duplan JC, Mallet JJ, Peyrin JO, Ponsin G, and Teyssier M

Subjects
Female, Humans, Lipoproteins blood, Lipoproteins chemistry, Male, Blood Chemical Analysis methods, Food, Magnetic Resonance Spectroscopy methods
Abstract

The line width test has been realised on twelve normal healthy persons (seven men and five women). Blood was collected at different time during one day. The results obtained when blood samples was taking after eating, showed an appreciable decrease in the average methylene and methyl line width. The same test realised on clear serum samples added up with increasing quantities of triglycerids rich lipoproteins leads to the same result.

Published
1990

5. [Erythrocyte-plasma water exchange studied by nuclear magnetic resonance spin-spin (T2) relaxation. Relation between the time the water molecule stays in the erythrocyte and its volume].

Author

Teyssier R and Peyrin JO

Subjects
Cell Membrane Permeability, Erythrocytes cytology, Humans, Magnetic Resonance Spectroscopy, Time Factors, Body Water metabolism, Erythrocytes metabolism, Plasma metabolism
Abstract

A simple, precise and rapid pulse nuclear magnetic resonance technique for measuring the rate of water exchange across the erythrocyte membrane is presented. The effects of cell volume on cell water lifetime may be eliminated by the introduction of a cell water diffusion coefficient. This parameter is applied to the study of eleven blood samples.

Published
1986

6. [In vitro differentiation of inflammatory and non-inflammatory states of the synovial fluid by magnetic protonic relaxation].

Author

Teyssier R, Colson F, and Teyssier M

Subjects
Arthritis diagnosis, Diagnosis, Differential, Humans, In Vitro Techniques, Inflammation diagnosis, Magnetic Resonance Imaging, Synovial Fluid
Abstract

The differentiation between inflammatory and non inflammatory states has been performed using Nuclear Magnetic Resonance (NMR) in vitro by measuring relaxation times T1 and T2 in 84 synovials fluids obtained from various rheumatologic diseases. The results show that the T1/T2 ratio is more sensitive to distinguish these two situations rather than the isolated T1 or T2 values. In particular, high values of T1/T2 ratio are found in septic arthritis.

Published
1987

7. [Liquefaction of human sperm by a nuclear magnetic resonance technic. Effect of temperature].

Author

Teyssier M, Teyssier R, and Czyba JC

Subjects
Humans, Magnetic Resonance Spectroscopy, Male, Proteins metabolism, Temperature, Time Factors, Semen metabolism
Abstract

An investigation of the liquefaction of human semen was performed using the technique of Nuclear Magnetic Resonance, by measuring the time of spin-spin proton relaxation. Measurements which were made at 24 degrees C and 37 degrees C over a 15-day period showed that significant degradation processes and protein transformations occurred during the first 3-5 days. Different phases of these processes were identified.

Published
1986

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