Disappearance rate of glycosylated and non-glycosylated chicken growth hormone: influence on biological activity.
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abstract
The disappearance rates for glycosylated (GcGH) and non-glycosylated chicken growth hormone (NGcGH) were compared following their intravenous injection into anaesthetized adult laying hens. The metabolic clearance rate of GcGH was about 20% lower (P = 0.13) compared to NGcGH. Similarly, there was a tendency towards a longer half-life for GcGH. No major physiological significance could be attributed to the glycosylation state of the preparations as far as their effects on circulating insulin-like growth factor I and iodohormone levels were concerned.