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Abstract
We investigated the effect of in vivo hypothyroidism on the sialylation and sulfation of thyroid-stimulating hormone (TSH) secreted by mouse pituitary explants. Oligosaccharides from secreted thyroid-stimulating hormone from hypothyroid animals contained greater sialic acid relative to sulfate in both alpha and beta subunits. Aging per se had little effect on thyroid-stimulating hormone sialylation or sulfation. Variable sialylation and sulfation demonstrates a mechanism for charge microheterogeneity of thyroid-stimulating hormone, and the increasing sialylation observed with hypothyroidism may functionally mediate the prolonged metabolic clearance that has been noted previously.
View details for Web of Science ID A1989T659600059
View details for PubMedID 2930540