Abstract
Extensive general pharmacological studies of hydroxypropylmethylcellulose acetate succinate (HPMCAS) were carried out in mice, rats, guinea pigs, rabbits, dogs and frogs. HPMCAS appeared to have no significant effect on the central nervous system, autonomic nervous system and cardiovascular system. Various biological analyses of the blood (including hemolysis and coagulation properties) and urine were unaffected, and the compound showed no significant local anesthetic or vascular permeability. At higher doses of HPMCAS, an increase in secretion of saliva in guinea pigs, a decrease in gastric juice secretion in rats and an increase in rectal temperature in rats were observed, but these effects did not show clear dose-dependence.
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