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Previous work from our laboratory demonstrated a role for sensory nerves in remote dilations to microapplied methacholine by blocking the response with CGRP8-37 and concluded CGRP was the neurotransmitter. Recently, a more specific CGRP receptor antagonist, BIBN4096BS, was developed. The goals of the present study are to characterize the effects of BIBN4096BS on vasomotor responses in the hamster...
We have developed an intensity analysis technique for fluorescence microscopy that allows us to measure, in real time, the diameter and the membrane potential or intracellular calcium ([Ca 2+ ] i ) of in vivo arteriolar endothelium or smooth muscle. Cheek pouch arterioles of anesthetized hamsters were luminally or abluminally labeled with Di-8-ANEPPS, a voltage-sensitive dye, or Fura...
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