Modulatory effect of quercetin and its glycosylated form on key enzymes and antioxidant status in rats penile tissue of paroxetine-induced erectile dysfunction
2018
Abstract This study sought to compare the effects of quercetin and rutin on some enzymes linked to erectile function as well as antioxidant status in penile tissue of paroxetine – induced erectile dysfunction in rats. Animals were randomly divided into twelve groups: normal control (NC), sildenafil (SD), quercetin (QA) (25 and 50 mg/kg), rutin (RU) (25 and 50 mg/kg), PAR (10 mg/kg); PAR + SD; PAR + QA, PAR + RU (25 and 50 mg/kg). After 14 days’ treatment, phosphodiesterase-5′ (PDE-5′), arginase, adenosine deaminase (ADA), acetylcholinesterase (AChE) and angiotensin-I converting enzyme (ACE) activities as well as malondialdehyde (MDA) and non-protein thiol levels were determined in rat penile tissues. Elevated levels of PDE-5′, arginase, AChE, ADA and ACE activities and MDA were observed in PAR-induced rats with concomitant decrease in non-protein thiol levels when compared to the NC group. However, treatment with SD, QA and RU significantly reduced the activities of AChE, PDE-5′, arginase, ADA and ACE and MDA levels and elevated non-protein thiol levels in penile tissues of PAR-induced rats. Furthermore, administration of QA and RU in PAR-induced rats modulated the key enzymes relevant to erection, improved antioxidant status and could be potential functional food ingredients and nutraceuticals in the prevention and/or management of erectile dysfunction.
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