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American Journal of Physiology -- Legacy Content 1986-01-01

New amiloride analogue as hapten to raise anti-amiloride antibodies.

T R Kleyman, R Rajagopalan, E J Cragoe, B F Erlanger, Q Al-Awqati

文献索引:Am. J. Physiol. 250(1 Pt 1) , C165-70, (1986)

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摘要

A new amiloride analogue, "amiloride-caproic acid," was synthesized, coupled to albumin, and used as a hapten to raise anti-amiloride antibodies in rabbits. The antibodies were affinity purified with an amiloride affinity column and characterized. Binding studies using [3H]benzamil showed a dissociation constant of 0.8 nM. Amiloride and amiloride-caproate inhibited [3H]benzamil binding; epsilon-guanidinocaproic acid showed no inhibition. Anti-amiloride antibodies reversed the inhibition by amiloride of sodium transport across toad urinary bladder. Anti-amiloride antibodies and an amiloride affinity column should provide useful tools for the characterization of the epithelial sodium channel.

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