scholarly journals parallel secretion of secretory proteins and calcium by the rat parotid gland.

1981 ◽  
Vol 312 (1) ◽  
pp. 445-454 ◽  
Author(s):  
P Kanagasuntheram ◽  
S C Lim
Keyword(s):  
Parotid Gland ◽  
Secretory Proteins ◽  
Rat Parotid Gland ◽  
Rat Parotid

scholarly journals Retention of amylase in the secretory granules of parotid gland after extensive release of Ca++ by ionophore A-23187.

1977 ◽  
Vol 74 (3) ◽  
pp. 789-793 ◽  
Author(s):  
Y Flashner ◽  
M Schramm
Keyword(s):  
Parotid Gland ◽  
Secretory Granules ◽  
Secretory Proteins ◽  
Stabilizing Agent ◽  
A 23187 ◽  
Rat Parotid Gland ◽  
Rat Parotid ◽  
Extensive Release

The effect of the ionophore A-23187 was tested on isolated secretory granules of rat parotid gland. The ionophore caused extensive release of calcium from the granules without effecting release of amylase or other secretory proteins. It is therefore concluded that the role of calcium in the granules is probably not that of a stabilizing agent.

scholarly journals SECRETORY PROTEIN SYNTHESIS IN THE STIMULATED RAT PAROTID GLAND

1973 ◽  
Vol 59 (3) ◽  
pp. 708-721 ◽  
Author(s):  
John H. Lillie ◽  
Seong S. Han
Keyword(s):  
Protein Synthesis ◽  
Parotid Gland ◽  
Latent Period ◽  
Total Protein ◽  
Feedback System ◽  
Secretory Protein ◽  
Secretory Process ◽  
Secretory Proteins ◽  
Rat Parotid Gland ◽  
Rat Parotid

Administration of the ß-adrenergic drug, isoproterenol (IPR), affects the release of 98% of stored amylase from rat parotid gland acinar cells. A period of 6 h elapses from the onset of secretion to the maximum [14C]phenylalanine (Phe) incorporation into total protein and amylase. 10 h after IPR administration the rate of [14C]Phe incorporation into total protein was no longer elevated above that of control. Incorporation into amylase, however, remained elevated above the control by 2.3 times. This latent period may reflect: (a) reduced amounts of available ATP which occurs as a result of the process of secretion as well as (b) the time required for reorganization of cellular organelles and membranes after secretion. The latent period after IPR-induced secretion appears similar to the latent period which has recently been reported to occur after physiologic release of amylase from the parotid gland during the diurnal feeding cycle of the rat. These observations support the existence of a positive feedback system operant in the parotid acinar cell linking the release of secretory proteins with their synthesis. The period of greatest protein synthesis is, however, temporally dissociated from the secretory process.

Changes in Rat Parotid Salivary Proteins Induced by Chronic Isoproterenol Administration

1977 ◽  
Vol 56 (3) ◽  
pp. 290-303 ◽  
Author(s):  
Murray R. Robinovitch ◽  
Patricia J. Keller ◽  
Dorthea A. Johnson ◽  
Jeanne M. Iversen ◽  
Dorothy L. Kauffman
Keyword(s):  
Parotid Gland ◽  
Salivary Proteins ◽  
Secretory Proteins ◽  
Qualitative And Quantitative ◽  
Rat Parotid Gland ◽  
Quantitative Changes ◽  
Rat Parotid ◽  
Biochemical Analyses

Changes in the rat parotid gland and its secretion, brought about by chronic isoproterenol administration, were studied. In addition to the expected enlargement, morphological and biochemical analyses of the glands showed evidence of changes in the secretory components. Chromatographic and electrophoretic experiments revealed both qualitative and quantitative changes in the secretory proteins.

scholarly journals Functional Regulation of Protein Synthesis in the Rat Parotid Gland

1971 ◽  
Vol 246 (12) ◽  
pp. 3879-3884 ◽  
Author(s):  
Leo M. Sreebny ◽  
Dorthea A. Johnson ◽  
Murray R. Robinovitch
Keyword(s):  
Protein Synthesis ◽  
Parotid Gland ◽  
Rat Parotid Gland ◽  
Functional Regulation ◽  
Rat Parotid

Effects of Orchiectomy on the Rat Parotid Gland -An Ultrastructural and Stereological Study

1996 ◽  
Vol 155 (3) ◽  
pp. 172-183 ◽  
Author(s):  
D. Ježek ◽  
L. Banek ◽  
T. Banek
Keyword(s):  
Parotid Gland ◽  
Rat Parotid Gland ◽  
Rat Parotid
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