Relationship between latency and period for 5-hydroxytryptamine-induced membrane responses in the Calliphora salivary gland
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Relationship between latency and period for 5-hydroxytryptamine-induced membrane responses in the Calliphora salivary gland.
Following stimulation with a calcium-mobilizing agonist there is often a distinct latency (L) preceding the onset of the first calcium spike. In the continued presence of the agonist, repetitive spikes appear separated by a variable period (P). The relationship between L and P has been investigated in an insect salivary gland responding to 5-hydroxytryptamine (5-HT). Both L and P were found to ...
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The salivary glands of the blowfly (Calliphora erythrocephala) are long thin tubes consisting of a single layer of homogeneous cells that secrete iso-osmotic KCI when stimulated by 5-hydroxytryptamine (Berridge, 1975). Cyclic AMP formation is accelerated by 5-hydroxytryptamine and the addition of cyclic AMP mimicks the stimulation of fluid secretion, but not the increase in transepithelial Caz+...
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The efflux of ̂ Ca from prelabelled salivary glands was studied under a variety of conditions. 5-Hydroxytryptamine (5-HT) or cyclic AMP caused a large release of label most of which entered the saliva. The ionophore A23187 caused a similar release of calcium but EGTA had no effect. The presence of an active calcium pump on the lumenal surface was investigated further by studying calcium transpor...
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15 صفحه اول5-Hydroxytryptamine modulation of rat parotid salivary gland secretion.
5-Hydroxytryptamine (5-HT) has been reported to produce significant responses in blowfly salivary glands, but little information is available concerning its action on mammalian salivary glands. When 5-HT (0.1 mumol/L to 10 mumol/L) is infused i.a. into anesthetized rats, no salivary secretion is obtained from either parotid or submandibular glands. However, when 5-HT is infused along with a thr...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1994
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj3020545