We will develop and improve the spectroscopic methods needed to study tissue metabolism by (1)H Nuclear Magnetic Resonance. We will also develop computer models of metabolic pathways and design (13)C tracer experiments to test and improve these models. Finally we will perform initial experiments designed to interpret the flow of (13)C label from 1-13C glucose into lactate and glutamate in tenus of metabolic fluxes.
The specific aims are: 1. To develop 1H and 13C NMR methods to measure kinetics and steady state 13C labeling patters of lactate and amino acids in vivo. Specific areas for improvement are: i) Water Suppression (1H). ii)Sensitivity (1H, 13C). iii)Localization (1H, 13C). iv)Editing (1H). v)Quantification (1H, 13C). 2. To develop kinetic models to interpret the patterns and rates of 13C labeling of lactate and amino acids from 13C-glucose in rabbit brain. Two general areas of research are proposed: 1) To interpret the observed 13C flows into lactate and glutamate pools in terms of a computer model which only includes metabolites on the direct or linear pathway. 2) To evaluate the assumptions made in the linear model about equilibrium and contributions from other pathways.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Research Project (R01)
Project #
5R01DK043146-05
Application #
2142805
Study Section
Biophysical Chemistry Study Section (BBCB)
Project Start
1990-09-20
Project End
1995-08-31
Budget Start
1994-03-01
Budget End
1995-02-28
Support Year
5
Fiscal Year
1994
Total Cost
Indirect Cost
Name
Yale University
Department
Biochemistry
Type
Schools of Medicine
DUNS #
082359691
City
New Haven
State
CT
Country
United States
Zip Code
06520
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