alexa The effects of allopurinol, uric acid, and inosine administration on xanthine oxidoreductase activity and uric acid concentrations in broilers.
Neurology

Neurology

Brain Disorders & Therapy

Author(s): Settle T, Carro MD, Falkenstein E, Radke W, Klandorf H

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Abstract The purpose of these studies was to determine the effects of uric acid (UA) and inosine administration on xanthine oxidoreductase activity in broilers. In experiment one, 25 broilers were assigned to 5 treatment groups: control, AL (25 mg of allopurinol/kg of body mass), AR (AL for 2 wk followed by allopurinol withdrawal over wk 3), UAF (AL plus 6.25 g of UA sodium salt/kg of feed), and UAI (AL plus 120 mg of UA sodium salt injected daily). The UA administration had no effect on plasma concentration of UA (P > 0.05), and all allopurinol-treated birds had lower (P < 0.05) UA levels than controls. The UA concentrations were restored in both plasma and kidney of AR birds at wk 3, but liver UA concentrations remained lower. Whereas xanthine oxidoreductase (XOR) activity in the liver (LXOR) was reduced (P < 0.05) by allopurinol treatment, XOR activity in the kidney (KXOR) was not affected (P = 0.05). In experiment two, 3 groups of 5 birds each were fed 0 (control), 0.6 M inosine/kg of feed (INO), or INO plus 50 mg of allopurinol/kg of body mass (INOAL). The INOAL birds showed lower total LXOR activity, but KXOR activity was not affected. Both INO and INOAL birds had higher plasma and kidney UA concentrations than controls. The results suggest that regulation of UA production is tissue dependent. This article was published in Poult Sci and referenced in Brain Disorders & Therapy

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