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| Content Provider | Springer Nature Link |
|---|---|
| Author | Hartman, W. J. Prior, R. L. |
| Copyright Year | 1997 |
| Abstract | The objective of these experiments was to examine short- and long-term (7 d) effects of arginine-deficient diets on free amino acid concentrations in hindlimb muscle of rats. In rats fed the control diet containing arginine (+Arg), muscle alanine and methionine concentrations were higher 1 and 2h after feeding compared to food-deprived rats, whereas branched-chain amino acids, arginine and asparagine concentrations were lower postprandially. In Experiment 1, rats were fed an arginine-deficient (−Arg) diet with glutamate (+Glu) substituted for arginine; alanine (+Ala), ornithine (+Orn) or citrulline (+Cit) were substituted for arginine in Experiment 2. In Experiment 1, arginine concentrations decreased in blood but not in muscle. This contrasts with rats fed −Arg/+Ala or −Arg/+Orn diets which had muscle arginine concentrations less than half the concentrations in controls or in rats fed the −Arg/+Cit diet. Muscle essential amino acids in Experiment 2 did not differ by diet, but muscle branched-chain amino acids were elevated relative to controls in the rats fed −Arg/+Ala or −Arg/+Orn diets; however, rats fed the −Arg/+Cit diet had levels similar to the controls. Also, muscle branched-chain amino acids were correlated with glutamine concentrations in both blood and muscle. The measurements in the post-meal period suggest that muscle amino acid concentrations may more closely reflect dietary amino acid patterns than do blood amino concentrations. |
| Starting Page | 219 |
| Ending Page | 236 |
| Page Count | 18 |
| File Format | |
| ISSN | 09394451 |
| Journal | Amino Acids |
| Volume Number | 13 |
| Issue Number | 3-4 |
| e-ISSN | 14382199 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 1997-01-01 |
| Publisher Place | Vienna |
| Access Restriction | Subscribed |
| Subject Keyword | Amino acids Muscle Fed state Arginine deficiency Rats Analytical Chemistry Biochemical Engineering Life Sciences Biochemistry Proteomics Neurobiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Biochemistry Clinical Biochemistry |
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