UPTAKE OF [14C]NICOTINIC ACID AND [14C] NICOTINAMIDE BYBORDETELLA PERTUSSIS

Synthesis and utility of 14C-labeled nicotinamide cofactors.

A new method for the synthesis of the reduced form of beta-nicotinamide [U-14C]adenine dinucleotide 2(')-phosphate([Ad-14C]NADPH) is presented. The present synthesis results in a radioactive material with a specific activity that is greater than 220 mCi/mmol. This method could easily be adapted for syntheses of 14C-labeled NADH, NADP(+), or any nicotinamide cofactors with radiolabels in other p...

Uptake and metabolism of 14C-labeled oleic acid by atherosclerotic lesions in rabbit aorta.

The uptake of dopamine-14C and its conversion to noradrenaline-14C in rats.

The scheme of biosynthesis of noradrenaline from dopa in the mammalian tissues was presented by Blaschko (1). The conversion of dopamine to noradrenaline, mediated by dopamine-Q-hydroxylase (2), was shown to occur in the intracellular granules of the adrenal medulla (3) and heart (4, 5). The administration of tyrosine-14C (6) or dopa 14C (7 , 8) to rats results in formation of noradrenaline-14C...

Root-uptake of 14C derived from acetic acid by root vegetables

Sand culture using radish (Raphanus sativus L.) and hydroponics using carrot (Daucus carota L.) were conducted to examine root-uptake of carbon and its assimilation in the form of 14C-acetic acid. 14C-acetic acid (1, 2-14C, radioactivity: 74 kBq) was added to each pot. Radishes were grown under the dark conditions or the light conditions for 24 h. Carrot were grown under the light conditions af...

histological evaluation of the effect of three medicaments; trichloracetic acid, formocresol and mineral trioxide aggregate on pulpotomized teeth of dogs

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