The composition of the salivary gland secretion of the tsetse, Glossina morsitans morsitans Westwood 1850 (Diptera: Glossinidae)

SummaryThe effect of trypanosome infection on vector survival was observed in a line of Glossina morsitans morsitans selected for susceptibility to trypanosome infection. The differential effects of midgut and salivary gland infections on survival were examined by exposing flies to infection with either Trypanosoma congolense which colonizes midgut and mouthparts or Trypanosoma brucei rhodesiense which colonizes midgut and salivary glands. A comparison of the survival distributions of uninfected flies with those exposed to infection showed that salivary gland infection significantly reduces tsetse survival; midgut infection had little or no effect on the survival of tsetse. The significance of these findings is discussed in relation to the vectorial capacity of wild flies.

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The salivary gland secretion in Bradysia

Experimental Cell Research ◽

10.1016/0014-4827(63)90317-3 ◽

1963 ◽

Vol 30 (2) ◽

pp. 432-436 ◽

Cited By ~ 4

Author(s):

Ewa Perkowska

Keyword(s):

Salivary Gland ◽

Gland Secretion ◽

Salivary Gland Secretion

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Salivary Gland Secretion

Physiology of the Gastrointestinal Tract ◽

10.1016/b978-0-12-809954-4.00037-2 ◽

2018 ◽

pp. 813-830

Author(s):

Gordon B. Proctor ◽

Abeer K. Shaalan

Keyword(s):

Salivary Gland ◽

Gland Secretion ◽

Salivary Gland Secretion

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5-HT-stimulated arachidonic acid release from labeled phosphatidylinositol in blowfly salivary glands

AJP Cell Physiology ◽

10.1152/ajpcell.1982.243.5.c222 ◽

1982 ◽

Vol 243 (5) ◽

pp. C222-C226 ◽

Cited By ~ 10

Author(s):

I. Litosch ◽

Y. Saito ◽

J. N. Fain

Keyword(s):

Arachidonic Acid ◽

Salivary Gland ◽

Salivary Glands ◽

Gland Secretion ◽

Appreciable Effect ◽

Arachidonic Acid Release ◽

Salivary Gland Secretion ◽

Hormone Sensitive ◽

Acid Release ◽

Ca2 Channels

In blowfly salivary glands, breakdown of phosphatidylinositol has been linked to the activation of hormone-sensitive Ca2+ channels. Addition of 5-hydroxytryptamine to blowfly salivary glands stimulated the breakdown of phosphatidylinositol prelabeled with 32P or [3H]arachidonic acid. This was associated with a transient accumulation of [3H]arachidonic-labeled diglyceride. There was no appreciable effect of 5-hydroxytryptamine on breakdown of phosphatidylethanolamine or phosphatidylcholine labeled with 32P or [3H]arachidonic acid, indicating that phosphatidylinositol was the immediate source of diglyceride. Extracellular Ca2+ was necessary for [3H]arachidonic acid but not 32P loss from phosphatidylinositol. Addition of arachidonic acid to salivary glands did not stimulate salivary gland secretion or 45Ca flux. In contrast, 5-hydroxytryptamine stimulated both salivary gland secretion and 45Ca flux. These results indicate that, although [3H]arachidonic acid is incorporated into phosphatidylinositol and its release from this phospholipid is increased by 5-hydroxytryptamine, the liberated arachidonic acid does not stimulate salivary gland secretion or 45Ca flux.

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