Biphasic modulation of potassium release in rat parotid gland by carbachol and phenylephrine.

摘要: Both 86Rb and 42K appeared to serve as useful markers for potassium movements in rat parotid gland slices. Carbachol phenylephrine elicited a biphasic increase release (86Rb release) that was dose related could be blocked by atropin phentolamine, respectively. The early transient phase of lasted from 3 6 minutes not removal external Ca. These observations suggested the corresponded hyperpolarization seen others response alpha adrenergic or cholinergic agents. latter sustained qualitatively chelation Ca ions 1 mM LaCl3. Thus, relate loss total with this tissue mechanisms responsible transporting water blood saliva.