In vitro proton MRS detection of frequency and amount of alcohol

Chemistry: analytical and immunological testing – Biological cellular material tested

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

436131, 436132, 436173, G01N 3398, G01N 3348, G01N 3349

Patent

active

058664270

ABSTRACT:
In the method of the invention, in vitro proton MRS is employed to determine the measurable ethanol concentrations in ethanol-treated erythrocyte samples of occasional and heavy drinkers. An erythrocyte to plasma ethanol concentration ratio is determined based upon the MRS measured erythrocyte concentration. Erythrocyte to plasma ethanol concentration ratios are significantly greater for heavy drinkers (a subset of alcohol tolerant individuals) as compared to the ratios calculated for occasional drinkers (non-tolerant individuals) when erythrocyte ethanol concentration is determined by MRS. Thus, the method of the present invention discriminates between alcohol tolerant individuals and alcohol non-tolerant individuals based upon the magnitude of the erythrocyte to plasma ethanol concentration ratio obtained according to the methods disclosed herein.

REFERENCES:
Besson, J.A.O., et al., ".sup.1 H-NMR Relaxation Times and Water Content of Red Blood Cells from Chronic Alcoholic Patients During Withdrawl," Mag. Res. Imag. 7:289-291 (1989).
Besson, J.A.O., et al., "The Effects of Progressive Abstinence from Alcohol on Red Blood Cell Proton NMR Relaxation Times and Water Content," Alcoholism: Clinical and Experimental Research 15(2):181-183 (1991).
Bock, J.L., "Analysis of Serum by High-Field Proton Nuclear Magnetic Resonance," Clin. Chem. 28(9):1873-1877 (1982).
Brown, F.F., et al., "Human Erythrocyte Metabolism Studies by .sup.1 H Spin Echo NMR," FEBS Lett. 82(1):12-16 (1977).
Chiou, J.-S., et al., "Anesthesia Cutoff Phenomenon: Interfacial Hydrogen Bonding," Science 248:583-585 (1990).
Chiou, J.-S., et al., "Interfacial Dehydration by Alcohols: Hydrogen Bonding of Alcohols to Phospholipids," Alcohol 8:143-150 (1991).
Chiu, T.-M., et al., "In Vivo Proton Magnetic Resonance Spectroscopy Detection of Human Alcohol Tolerance," Mag. Reson. Med. 32:511-516 (1994).
Conte, A., et al., "Effect of L-Propionyl Carnitine on Some Properties of Erythrocytes and Leukocyctes of Alcohol Abusers," Int. J. Tiss. Reac. XVII(1):21-31 (Jan. 1995).
Davin, A., et al., "Rapid Evaluation of Ethanol Content and Metabolism in Human Plasma Using Quantitative Proton Magnetic Resonance Spectroscopy," Alcohol and Alcoholism 29(5):479-482 (1994).
Gentry, R.T., et al., "Serial Determination of Plasma Ethanol Concentrations in Mice," Physiology and Behavior 31:529-532 (1983).
Goldstein, D.B., "Ethanol-Induced Adaptation in Biological Membranes," Ann. N. Y. Acad. Sci. 492:103-111 (1987).
Irving, M.G., et al., "Application of the Reverse DEPT Polarization-Transfer Pulse Sequence to Monitor In Vitro and In Vivo Metabolism of .sup.13 C-Ethanol by .sup.1 H-NMR Spectroscopy," Int. J. Biochem. 17(4):471-478 (1985).
Jones, A.J., and Kuchel, P.W., "Measurement of Choline Concentration and Transport in Human Erythrocytes by .sup.1 H NMR: Comparison of Normal Blood and That from Lithium-Treated Psychiatric Patients," Clin. Chim. Acta 104:77-85 (1980).
Kaufman, M.J., et al., "In Vivo Proton Magnetic Resonance Spectroscopy of Alcohol in Rhesus Monkey Brain," Mag. Reson. Imag. 12(8):1245-1253 (1994).
Koob, G.F., and Bloom, F.E., "Cellular and Molecular Mechanisms of Drug Dependence," Science 242:715-723 (1988).
Kriat, M., et al., "Quantitation of Metabolites in Human Blood Serum by Proton Magnetic Resonance Spectroscopy. A Comparative Study of the Use of Formate and TSP as Concentration Standards," NMR in Biomedicine 5:179-184 (1992).
Mendelson, J.H., and Mello, N.K., "Biologic Concomitants of Alcoholism," N. Engl. J. Med. 301(17):912-921 (1979).
Mendelson, J.H., et al., "In Vivo Proton Magnetic Resonance Spectroscopy of Alcohol in Human Brain," Alcohol 7:443-447 (1990).
Pappas, A.A., et al., "High-Resolution Proton Nuclear Magnetic Resonance Spectroscopy in the Detection and Quantitation of Ethanol in Human Serum," J. Anal. Toxicol. 17:230-232 (1993).
Rabenstein, D.L., ".sup.1 H NMR methods for the noninvasive study of metabolism and other processes involving small molecules in intact erythrocytes," J. Biochem. Biophys. Meth. 9:277-306 (1984).
Spielman, D.M., et al., "Magnetic Resonance Spectroscopic Imaging of Ethanol in the Human Brain: A Feasibility Study," Alcoholism: Clinical and Experimental Research 17(5):1072-1077 (1993).
Tsai, Y.-S., et al., "Fourier Transform Infrared Studies on Phospholipid Hydration: Phosphate-Oriented Hydrogen Bonding and Its Attenuation by Volatile Anesthetics," Mol. Pharmacol. 31:623-630 (1987).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

In vitro proton MRS detection of frequency and amount of alcohol does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with In vitro proton MRS detection of frequency and amount of alcohol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and In vitro proton MRS detection of frequency and amount of alcohol will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1116731

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.