The effect of water on rock powders

VASODILATATION BY PROSTAGLANDIN F2α IN THE CANINE TONGUE THROUGH A PARASYMPATHETIC MECHANISM

“…In the present experiments SQ 14,225, the inhibitor of angiotensin I converting enzyme (Cushman et al, 1977), at a dose which greatly potentiated the vasodilator responses to bradykinin and kallikrein, failed to augment the vasodilator response to lingual nerve stimulation. Since kininase II which inactivates bradykinin is the same enzyme that converts angiotensin I to II (Yang, Erdbs & Levin, 1971), it is to be expected that SQ 14,225 would potentiate the action of bradykinin.…”

“…We performed the present experiments to elucidate this point. Since involvement of bradykinin or a related polypeptide has been suggested for the atropine-resistant vasodila-tation of the tongue in response to chorda-lingual stimulation (Hilton & Lewis, 1958), we also examined the effect of SQ 14,225, an inhibitor of angiotensin I converting enzyme (Cushman, Cheung & Ondetti, 1977), on the vasodilatation of the tongue caused by chorda-lingual stimulation. SQ 14,225 potentiates the vasodepressor effect of bradykinin (Cushman et al, 1977).…”

Identification of a novel angiotensin‐I‐converting enzyme inhibitory peptide corresponding to a tryptic fragment of bovine β‐lactoglobulin

“…ACE inhibitory activity was measured spectrophotometrically using hippuryl-L-histidyl-L-leucine as the substrate for ACE [9]. Initial screening of ß-lg hydrolysates was carried out using a single assay to give an index of ACE inhibition.…”

Absorption by colloidal and noncolloidal soil constituents /

“…This action of course becomes more pronounced the finer the particles. Cushman (6) shows that this action takes place to an appreciable extent in a few hours and suggests that a colloidal fiJm is thereby formed on the surface of the particles. Michaelis (15) states that some finely powdered quartz which he prepared absorbed water and sw^elled; also that a silicic acid gel may be made by boiling a quartz suspension for several days.…”