TY - JOUR
T1 - Food deprivation changes peroxisomal β-oxidation activity but not catalase activity during postnatal development in pig tissues
AU - Yu, Xing Xian
AU - Drackley, James K.
AU - Odle, Jack
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 1998/7
Y1 - 1998/7
N2 - Peroxisomal β-oxidation and catalase activity were investigated in liver, kidney and heart from pigs at the following timepoints: within 0.5 h after birth (0 h, unfed) and at 24 h (suckled or unsuckled), 10 d (suckled or 24-h food-deprived), 21 d (suckled or 24-h food-deprived) and 5 mo (overnight food-deprived). In liver, peroxisomal β-oxidation increased about twofold at 24 h for suckled pigs (P < 0.001) but did not change for unsuckled pigs. The rate was further increased in 21-d-old pigs compared with 0- (P < 0.001) or 24-h-old (P < 0.05) pigs, but was lower at 5 mo than at 10 or 21 d (P < 0.01). The rate was higher for food-deprived pigs than suckled pigs at 10 d (P < 0.001) of age. In kidney, peroxisomal β-oxidation was unchanged during the first 24 h but was higher (P < 0.05) at 10 d for suckled pigs and at 21 d than at 0 h. Nutritional state did not influence renal peroxisomal β- oxidation. In heart, peroxisomal β-oxidation did not change with age or nutritional state. The developmental pattern of fatty acyl-CoA oxidase activity was similar to that of peroxisomal β-oxidation in each tissue. Developmental increases of peroxisomal β-oxidation were greater than those for first-cycle peroxisomal β-oxidation reported earlier, suggesting that peroxisomal β-oxidation became more complete in older pigs. Catalase activity did not change during the first 24 h after birth but then increased 10.5-, 2.9-fold and 33% at 10 d in liver, kidney and heart, respectively. The concentration of catalase mRNA was only 1.1- and 1.3-fold higher at 10 d than at 24 h in liver and kidney, respectively. Catalase activity was not affected by food deprivation. We concluded the following: 1) peroxisomal β-oxidation develops rapidly after birth and may be important for piglets to oxidize milk fatty acids; 2) food is required for the initial induction after birth; and 3) rapidly increased catalase activity during the first 10 d of life resulted from both pretranslational and post-translational regulation.
AB - Peroxisomal β-oxidation and catalase activity were investigated in liver, kidney and heart from pigs at the following timepoints: within 0.5 h after birth (0 h, unfed) and at 24 h (suckled or unsuckled), 10 d (suckled or 24-h food-deprived), 21 d (suckled or 24-h food-deprived) and 5 mo (overnight food-deprived). In liver, peroxisomal β-oxidation increased about twofold at 24 h for suckled pigs (P < 0.001) but did not change for unsuckled pigs. The rate was further increased in 21-d-old pigs compared with 0- (P < 0.001) or 24-h-old (P < 0.05) pigs, but was lower at 5 mo than at 10 or 21 d (P < 0.01). The rate was higher for food-deprived pigs than suckled pigs at 10 d (P < 0.001) of age. In kidney, peroxisomal β-oxidation was unchanged during the first 24 h but was higher (P < 0.05) at 10 d for suckled pigs and at 21 d than at 0 h. Nutritional state did not influence renal peroxisomal β- oxidation. In heart, peroxisomal β-oxidation did not change with age or nutritional state. The developmental pattern of fatty acyl-CoA oxidase activity was similar to that of peroxisomal β-oxidation in each tissue. Developmental increases of peroxisomal β-oxidation were greater than those for first-cycle peroxisomal β-oxidation reported earlier, suggesting that peroxisomal β-oxidation became more complete in older pigs. Catalase activity did not change during the first 24 h after birth but then increased 10.5-, 2.9-fold and 33% at 10 d in liver, kidney and heart, respectively. The concentration of catalase mRNA was only 1.1- and 1.3-fold higher at 10 d than at 24 h in liver and kidney, respectively. Catalase activity was not affected by food deprivation. We concluded the following: 1) peroxisomal β-oxidation develops rapidly after birth and may be important for piglets to oxidize milk fatty acids; 2) food is required for the initial induction after birth; and 3) rapidly increased catalase activity during the first 10 d of life resulted from both pretranslational and post-translational regulation.
KW - Catalase
KW - Peroxisomes
KW - Piglets
KW - β-oxidation development
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U2 - 10.1093/jn/128.7.1114
DO - 10.1093/jn/128.7.1114
M3 - Article
C2 - 9649593
AN - SCOPUS:2642677673
SN - 0022-3166
VL - 128
SP - 1114
EP - 1121
JO - Journal of Nutrition
JF - Journal of Nutrition
IS - 7
ER -