Effect of sucrose ingestion on plasma glutamate concentrations in humans administered monosodium L-glutamate.
Plasma glutamate concentrations in human subjects are markedly lower when monosodium L-glutamate (MSG) is ingested in consomme with starch than when ingested in consomme alone. This study investigated whether sucrose had a similar effect. Six normal adult subjects (three male, three female) ingested two servings of beef consomme each providing 50 mg MSG/kg body weight in a randomized crossover design. One serving of consomme contained no added carbohydrate; the other provided 0.5 g sucrose/kg body weight. Ingestion of the consomme without sucrose significantly (p less than 0.05) increased the mean plasma glutamate concentration from baseline (4.44 +/- 0.97 mumol/dl) to a peak value of 18.1 +/- 6.99 mumol/dl 30 min after dosing. The area under the plasma glutamate concentration-time curve was 553 +/- 238 mumol/dl X min. When the consomme contained 0.5 g sucrose/kg body weight, both the mean peak plasma glutamate concentration (5.48 +/- 2.19 mumol/dl) and the area under the curve (105 +/- 46 mumol/dl X min) were significantly lower. These data confirm that metabolizable carbohydrate has a significant effect on plasma glutamate concentration response after MSG loading.
Stegink
L D
LD
Filer
L J
LJ
Baker
G L
GL
Bell
E F
EF
D000284:Administration, Oral; D000328:Adult; D000409:Alanine / Q000097:blood; D000704:Analysis of Variance; D001224:Aspartic Acid / Q000097:blood; D001769:Blood / Q000187:drug effects* / Q000378:metabolism; D001786:Blood Glucose; D005260:Female; D005971:Glutamates / Q000097:blood / Q000378:metabolism*; D018698:Glutamic Acid; D006801:Humans; D008297:Male; D012970:Sodium Glutamate / Q000378:metabolism*; D013395:Sucrose / Q000494:pharmacology*
D001786:Blood Glucose; D005971:Glutamates; D001224:Aspartic Acid; D018698:Glutamic Acid; D013395:Sucrose; D000409:Alanine; D012970:Sodium Glutamate