Temperature-dependent modification of divalent cation flux in the rat parotid gland basolateral membrane

1994 ◽  
Vol 141 (3) ◽  
Author(s):  
T.P. Lockwich ◽  
I.H. Kim ◽  
I.S. Ambudkar
Keyword(s):  
Parotid Gland ◽  
Divalent Cation ◽  
Basolateral Membrane ◽  
Temperature Dependent ◽  
Rat Parotid Gland ◽  
Rat Parotid ◽  
Dependent Modification

scholarly journals Quantitative immunoelectron microscopic localization of (Na+,K+)ATPase in rat parotid gland.

1987 ◽  
Vol 35 (8) ◽  
pp. 871-879 ◽  
Author(s):  
T Iwano ◽  
M Akayama ◽  
A Yamamoto ◽  
K Omori ◽  
T Kumazawa ◽  
...  
Keyword(s):  
Parotid Gland ◽  
Plasma Membranes ◽  
Basolateral Membrane ◽  
Protein A ◽  
Acinar Cells ◽  
Gold Particles ◽  
Duct Cells ◽  
Rat Parotid Gland ◽  
Basal Plasma ◽  
Rat Parotid

Distribution of (Na+,K+)ATPase on the cell membranes of acinar and duct cells of rat parotid gland was investigated quantitatively by immunoelectron microscopy using the post-embedding protein A-gold technique. In acinar cells, ATPase was localized predominantly on the basolateral plasma membranes. A small but significant amount of (Na+,K+)ATPase was, however, detected on the luminal plasma membranes, especially on the microvillar region of the acinar cells; the surface density on the luminal membrane was approximately one third of that on the basolateral membranes. In duct cells, many gold particles were found on the basolateral membrane, especially along the basal infoldings of the plasma membranes, whereas no significant gold particles were found on the luminal plasma membranes, suggesting unilateral distribution of ATPase in duct cells. We suggest that in acinar cells sodium ion is not only transported paracellularly but is also actively transported intracellularly into the luminal space by the (Na+,K+)ATPase located on the luminal plasma membranes, and that water is passively transported to the luminal space to form a plasma-like isotonic primary saliva, while in the duct cells the same ion is selectively re-absorbed intracellularly by (Na+,K+)ATPase found in abundance along the many infoldings of the basal plasma membranes, thus producing the hypotonic saliva.

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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