Effects of Novel Potential Analgesic Compounds on the Cardiovascular and Respiratory Systems

The polypeptide analgesic compounds APCH3 (a TRPV1 receptor inhibitor) and PT1 (a P2X3 receptor inhibitor) were shown not to act on the cardiovascular system or respiratory system when given either as single or multiple doses in mice. The low molecular weight compound sevanol (an ASIC3 receptor inhibitor) had no effect on the cardiovascular system, but prolonged use for 14 days affected measures of the respiratory system, significantly increasing respiratory rate and peak expiratory flow rate.