... nerve activity from the right renal nerves were recorded in anaesthetized, spontaneously breathing, non diuretic rats, either with an intact spinal cord or with a spinal cord transected at the T6 level, before, during and after intravenous injections of 0.5–1.0 mg/kg of teprotide or captopril. 3. After...

.... Teprotide was the least potent inhibitor with a K 1 of near 20 nmol/l whereas captopril (SQ 14 225) and SA 446 were both approximately 10 times and MK 421 approximately 20 times more potent. 5. Two inhibitors which lacked thiol groups [teprotide or SQ 20 881 and N -(1- S -1-carboxy-3-phenylpropyl)- l -Ala...