Adler G M
Acta Biochim Pol. 1978;25(4):343-7.
Exogenous sialic acid at 3 mM and higher concentrations inhibits the basal adenylate cyclase activity and the activity stimulated by thyrotropin (TSH) and fluoride in the human thyroid membrane fraction; 30 mM-sialic acid acts as an inhibitor of TSH binding. The decrease of these activities at high sialic acid concentrations might be ascribed to changes in membrane conformation caused by acidic character of this sugar.
3 mM及更高浓度的外源性唾液酸可抑制人甲状腺膜组分中的基础腺苷酸环化酶活性以及促甲状腺激素(TSH)和氟化物刺激的活性;30 mM唾液酸可作为TSH结合的抑制剂。高唾液酸浓度下这些活性的降低可能归因于这种糖的酸性特征引起的膜构象变化。