Does Renin cause a decrease in blood pressure?
No. Renin causes the blood pressure to rise. By low blood
pressure the body releases Renin from the kidneys. Renin cleaves an
inactive peptide, called Angiotensinogen, converting it to
Angiotensin I. Angiotensin I is then converted to Angiotensin II by
ACE (Angiotensin-Converting-Enzyme). Angiotensin II causes
vasoconstriction and thus an increase in blood pressure.