Abstract
Male rats were trained to consume their daily food intake in 3 h. When rats were fed 6% casein for 14 d and were then fed either the 6 or 75% casein diet for 1 d, the plasma and brain ammonia concentrations of rats fed 75% casein were higher (P < 0.05) at 23 h after test meal initiation compared to those of rats fed 6% casein. When rats were fed 6% casein for 13 d and then fed the same 6% casein diet with or without an addition 15% ammonium acetate for an additional 7 d before feeding 75% casein for 1 d, the plasma ammonia concentration of each group was not different, but plasma and brain amino acid concentrations were lower in rats prefed 15% ammonium acetate before the 75% casein diet. When rats were fed 6.8% egg white for 9 d and then fed 27.9% egg white for an additional 7 d, food intake of rats fed the 27.9% egg white diet was lower (P < 0.05, paired t-test) for 4 d compared with that during the 3-d pretest period. When rats were meal-fed the 6.8% egg white diet for 13 d and then fed either the same 6.8% egg white diet or the 27.9% egg white diet for 1 d, plasma ammonia and plasma and brain amino acid concentrations were higher at 5 h after test meal initiation (P < 0.05) in rats fed 27.9% egg white compared to those of rats fed 6.8% egg white. At 23 h after test meal initiation, plasma ammonia, plasma amino acid and most brain amino acid concentrations were lower than they were at 5 h after test meal initiation in rats fed 27.9% egg white.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1583-1592 |
| Number of pages | 10 |
| Journal | Journal of Nutrition |
| Volume | 119 |
| Issue number | 11 |
| DOIs | |
| State | Published - Jan 1 1989 |
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Keywords
- ammonium acetate
- brain amino acids
- brain ammonia
- casein
- egg white protein
- energy intake
- high dietary protein
- male rats
- plasma amino acids
- plasma ammonia
ASJC Scopus subject areas
- Medicine (miscellaneous)
- Nutrition and Dietetics
Cite this
Plasma and brain ammonia and amino acids in rats measured after feeding 75% casein or 28% egg white. / Semon, B. A.; Leung, P. M.B.; Rogers, Quinton; Gietzen, D. W.
In: Journal of Nutrition, Vol. 119, No. 11, 01.01.1989, p. 1583-1592.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Plasma and brain ammonia and amino acids in rats measured after feeding 75% casein or 28% egg white
AU - Semon, B. A.
AU - Leung, P. M.B.
AU - Rogers, Quinton
AU - Gietzen, D. W.
PY - 1989/1/1
Y1 - 1989/1/1
N2 - Male rats were trained to consume their daily food intake in 3 h. When rats were fed 6% casein for 14 d and were then fed either the 6 or 75% casein diet for 1 d, the plasma and brain ammonia concentrations of rats fed 75% casein were higher (P < 0.05) at 23 h after test meal initiation compared to those of rats fed 6% casein. When rats were fed 6% casein for 13 d and then fed the same 6% casein diet with or without an addition 15% ammonium acetate for an additional 7 d before feeding 75% casein for 1 d, the plasma ammonia concentration of each group was not different, but plasma and brain amino acid concentrations were lower in rats prefed 15% ammonium acetate before the 75% casein diet. When rats were fed 6.8% egg white for 9 d and then fed 27.9% egg white for an additional 7 d, food intake of rats fed the 27.9% egg white diet was lower (P < 0.05, paired t-test) for 4 d compared with that during the 3-d pretest period. When rats were meal-fed the 6.8% egg white diet for 13 d and then fed either the same 6.8% egg white diet or the 27.9% egg white diet for 1 d, plasma ammonia and plasma and brain amino acid concentrations were higher at 5 h after test meal initiation (P < 0.05) in rats fed 27.9% egg white compared to those of rats fed 6.8% egg white. At 23 h after test meal initiation, plasma ammonia, plasma amino acid and most brain amino acid concentrations were lower than they were at 5 h after test meal initiation in rats fed 27.9% egg white.
AB - Male rats were trained to consume their daily food intake in 3 h. When rats were fed 6% casein for 14 d and were then fed either the 6 or 75% casein diet for 1 d, the plasma and brain ammonia concentrations of rats fed 75% casein were higher (P < 0.05) at 23 h after test meal initiation compared to those of rats fed 6% casein. When rats were fed 6% casein for 13 d and then fed the same 6% casein diet with or without an addition 15% ammonium acetate for an additional 7 d before feeding 75% casein for 1 d, the plasma ammonia concentration of each group was not different, but plasma and brain amino acid concentrations were lower in rats prefed 15% ammonium acetate before the 75% casein diet. When rats were fed 6.8% egg white for 9 d and then fed 27.9% egg white for an additional 7 d, food intake of rats fed the 27.9% egg white diet was lower (P < 0.05, paired t-test) for 4 d compared with that during the 3-d pretest period. When rats were meal-fed the 6.8% egg white diet for 13 d and then fed either the same 6.8% egg white diet or the 27.9% egg white diet for 1 d, plasma ammonia and plasma and brain amino acid concentrations were higher at 5 h after test meal initiation (P < 0.05) in rats fed 27.9% egg white compared to those of rats fed 6.8% egg white. At 23 h after test meal initiation, plasma ammonia, plasma amino acid and most brain amino acid concentrations were lower than they were at 5 h after test meal initiation in rats fed 27.9% egg white.
KW - ammonium acetate
KW - brain amino acids
KW - brain ammonia
KW - casein
KW - egg white protein
KW - energy intake
KW - high dietary protein
KW - male rats
KW - plasma amino acids
KW - plasma ammonia
UR - http://www.scopus.com/inward/record.url?scp=0024841391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024841391&partnerID=8YFLogxK
U2 - 10.1093/jn/119.11.1583
DO - 10.1093/jn/119.11.1583
M3 - Article
C2 - 2600663
AN - SCOPUS:0024841391
VL - 119
SP - 1583
EP - 1592
JO - Journal of Nutrition
JF - Journal of Nutrition
SN - 0022-3166
IS - 11
ER -