scholarly journals Hormonal regulation of enzyme synthesis in differentiating mammalian tissues

1974 ◽  
Author(s):  
O Greengard
Keyword(s):  
Hormonal Regulation ◽  
Enzyme Synthesis ◽  
Mammalian Tissues ◽  
Regulation Of Enzyme Synthesis

scholarly journals Nutritional and hormonal regulation of malic enzyme synthesis in rat mammary gland

1986 ◽  
Vol 236 (2) ◽  
pp. 441-445 ◽  
Author(s):  
M F Lobato ◽  
M Ros ◽  
F J Moreno ◽  
J P García-Ruíz
Keyword(s):  
Enzyme Activity ◽  
Mammary Gland ◽  
Malic Enzyme ◽  
Hormonal Regulation ◽  
Relative Rate ◽  
Enzyme Synthesis ◽  
Soluble Proteins ◽  
Control Value ◽  
Rat Mammary Gland ◽  
Malic Enzyme Activity

Cytosolic malic enzyme was purified from rat mammary gland by L-malate affinity chromatography. The pure enzyme obtained was used to produce a specific antiserum in a rabbit. Relative synthesis of malic enzyme in the mammary gland of mid-lactating rats was 0.097%, measured by labelling the enzyme in isolated acini. When food was removed, malic enzyme synthesis decreased to 35% and 20% of the control value at 4 and 6 h respectively. Incorporation of [3H]leucine into soluble proteins was constant during the first 6 h of starvation. When lactating rats (maintained with their pups) were starved for 24 h and then re-fed, the relative rate of enzyme synthesis increased 2.5-, 4-, and 4.5-fold at 3 h, 6 h and 18 h respectively after initiation of re-feeding. The relative rate of malic enzyme synthesis was about 50% of normal at 15 h after weaning, whereas the rate of synthesis of soluble proteins did not change. Administration of bromocriptine or adrenalectomy of lactating rats decreased the relative rate of synthesis of malic enzyme by 40% or 30% respectively; these effects were counteracted by hormone supplementation. Hormone therapy also caused an increase in the rate of incorporation of [3H]leucine into soluble proteins and in malic enzyme activity.

Glucose regulation of enzyme synthesis in sugar cane stem tissue

1967 ◽  
Vol 6 (6) ◽  
pp. 769-775 ◽  
Author(s):  
K.T. Glasziou ◽  
J.C. Waldron ◽  
B.H. Most
Keyword(s):  
Sugar Cane ◽  
Enzyme Synthesis ◽  
Glucose Regulation ◽  
Stem Tissue ◽  
Regulation Of Enzyme Synthesis
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