Abstract
In the present study, L-arginine/acrylic acid (Arg/AAc) batch hydrogel was successfully prepared by gamma irradiation for transdermal delivery of propranolol HCl in hypertensive rats. The resulted system has been characterized by FTIR to confirm the hydrogel formation. The swelling behavior of the prepared hydrogels was investigated as a function of time and pH. The kinetics of swelling has been investigated. In vivo pharmacokinetics evaluation, skin irritation test, and histopathological studies were investigated. Furthermore, the antihypertensive efficacy of transdermal propranolol-loaded Arg/AAc hydrogel on methyl prednisolone acetate-induced hypertensive rats was evaluated. It was found that the prepared patches exhibited a sustained release of the drug into systemic circulation over oral route which is subjected to hepatic first-pass metabolism, coupled with a short plasma half-life. Transdermal administration displayed a prolonged antihypertensive effect in spontaneously hypertensive rats. Moreover, the skin irritation test and histopathological examination indicated that the prepared patches are not irritant and can be safely applied on the skin. These results indicated that the hydrogel system composed of Arg and AAc ha...Continue Reading
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