Effects of orally administrated amino acids on myofibrillar proteolysis in chicks.
We examined the effects of orally administrated amino acids on myfibrillar proteolysis in food-deprived chicks. Plasma N(tau)-methylhistidine concentration, as an index of myofibrillar proteolysis, was decreased by the administration of Glu, Gly, Ala, Leu, Ile, Ser, Thr, Met, Trp, Asn, Gln, Pro, Lys and Arg but not by Asp, Val, Phe, Tyr or His to chicks. Orally administrated Cys was fatal to chicks. These results indicate that oral Glu, Gly, Ala, Leu, Ile, Ser, Thr, Met, Trp, Asn, Gln, Pro, Lys and Arg administration suppressed myofibrillar proteolysis in chicks.
Nakashima
Kazuki
K
Department of Animal Physiology and Nutrition, National Institute of Livestock and Grassland Science, Tsukuba, Japan. kaznaka@affrc.go.jp
Ishida
Aiko
A
Yakabe
Yoko
Y
Yamazaki
Makoto
M
Abe
Hiroyuki
H
D000284:Administration, Oral; D000596:Amino Acids / Q000008:administration & dosage*; D000818:Animals; D002645:Chickens; D005508:Food Deprivation; D008297:Male; D008762:Methylhistidines / Q000097:blood; D009210:Myofibrils / Q000187:drug effects* / Q000378:metabolism*
D000596:Amino Acids; D008762:Methylhistidines; C028118:3-methylhistidine