Serum dopamine-beta-hydroxylase activity in fasting man.
1. Dopamine-beta-hydroxylase (D beta H) activity was measured in sera from ten healthy male students after 2 and 3 days fasting which is associated with increased circulating noradrenaline. 2. Circulating D beta H remained essentially unchanged throughout the fasting period, although 'stress parameters' like plasma glycerol and free fatty acid concentrations were elevated by a factor of about two from first to second and third day of fasting (P less than 0-01). 3. Serum D beta H activity is not a sensitive index of increased sympathoadrenal activity in fasting man.
D000328:Adult; D001786:Blood Glucose / Q000378:metabolism; D004299:Dopamine beta-Hydroxylase / Q000097:blood*; D005215:Fasting; D005230:Fatty Acids, Nonesterified / Q000097:blood; D005990:Glycerol / Q000097:blood; D006801:Humans; D008297:Male; D013997:Time Factors
D001786:Blood Glucose; D005230:Fatty Acids, Nonesterified; D004299:Dopamine beta-Hydroxylase; D005990:Glycerol