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Reviews of Physiology, Biochemistry and Pharmacology 156 (Paperback, Softcover reprint of hardcover 1st ed. 2006)
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Reviews of Physiology, Biochemistry and Pharmacology 156 (Paperback, Softcover reprint of hardcover 1st ed. 2006)
Series: Reviews of Physiology, Biochemistry and Pharmacology, 156
Expected to ship within 10 - 15 working days
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Gastric acid plays a primary role in digestion as well as in the
sterilization of food and water. Gastric juice contains the most
concentrated physiological acid solution (pH~1) as a result + - of
H and Cl ion secretion [hydrochloric acid (HCl) production] by
parietal cells in the oxyntic mucosa of the stomach. The combined
output of the parietal cells leads to the sec- tion of 1-2 l of HCl
at a concentration of 150-160 mmol/l into the interior of the
stomach. In order to facilitate the production of acid, the
parietal cell relies on the generation of a high + concentration of
H ions that are transported into the lumen of the gland. This
process is fa- + + cilitated by activation of the gastric H ,K
-ATPase, which translocates to the apical pole of + - the parietal
cell. K as well as ATP hydrolysis and Cl all play critical roles in
the activation + + of gastric H ,K -ATPase and are essential for
the functioning of the enzyme (Reenstra and Forte 1990). This
review will examine the classical proteins that have been linked to
acid secretion as well as some recently identi?ed proteins that may
modulate gastric acid secretion, in - dition we discuss the known
secretagogues, and their receptors including a new receptor, which
upon stimulation can lead to acid secretion.
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