Effect of luminal pH on the absorption of water, Na+ and Cl− by rat intestine in vivo

Pharmacology of colonic muscle.

“…Several effects may be produced. The osmolarity of colonic contents may increase (Pertsiounis, 1970) and, as shown in animal studies, the fall in pH may reduce water absorption (Rousseau and Sladen, 1970) and stimulate propulsion (unpublished data).…”