Alkaloid extracts from Bitter leaf (Vernonia amygdalina) and Black nightshade (Solanum nigrum) inhibit phosphodiesterase‐5, arginase activities and oxidative stress in rats penile tissue

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dc.contributor.authorOmojokun, Olasunkanmi S.
dc.contributor.authorFamurewa, Akindele J.
dc.contributor.authorJaiyeoba, Oluwademilade A.
dc.contributor.authorOboh, Ganiyu
dc.contributor.authorAgbebi, Oluwaseun J.
dc.date.accessioned2021-02-09T14:30:40Z
dc.date.available2021-02-09T14:30:40Z
dc.date.issued2019-04-11
dc.descriptionStaff Publicationen_US
dc.description.abstractThe erectogenic potential of alkaloids extracted from Bitter leaf (Vernonia amyg‐ dalina) and Black nightshade (Solanum nigrum) was investigated in this study. Fresh leaves obtained from Bitter leaf and Black night shade were air‐dried, pulverized, and extracted for alkaloids. The inhibitory potential of the alkaloid extracts on arginase and phosphodiesterase‐5 (PDE‐5) activities in rats penile tissue was determined in vitro. The antioxidant properties were also evaluated and the constituent alkaloids quantified using GC‐MS. The alkaloid extracts inhibited arginase (0–30.51 μg/ml) and PDE‐5 (0–133.69 μg/ml) activities in a concentration‐dependent pattern. Similarly, the alkaloid extracts inhibited Fe2+‐induced lipid peroxidation in rats penile tissues, scavenged DPPH, OH, and NO radicals as a function of concentration. GC‐MS char‐ acterization revealed over 20 alkaloid compounds. The inhibition of PDE‐5‐, argin‐ ase‐, pro‐oxidant‐induced lipid peroxidative‐, and free radicals‐scavenging activities by the alkaloids is suggestive of putative mechanisms underlying their therapeutic use for managing erectile dysfunction in folklore medicine. Practical applications Alkaloids extracted from Black nightshade (Solanum nigrum) and Bitter leaf (Vernonia amygdalina) were characterized and investigated by standard procedures for inhibi‐ tory action against key erectile dysfunction‐linked enzymes and antioxidant activity. The alkaloids inhibited erectile dysfunction‐linked enzymes (arginase and PDE‐5) and showed considerable antioxidant activity in a concentration‐dependent manner. In view of this, we suggest the application of these results in the development of erec‐ tile dysfunction drugs in the pharmaceutical industry, with probable minimal or no adverse effect.en_US
dc.identifier.citation: Omojokun OS, Famurewa AJ, Jaiyeoba OA, Oboh G, Agbebi OJ. Alkaloid extracts from Bitter leaf (Vernonia amygdalina) and Black nightshade (Solanum nigrum) inhibit phosphodiesterase‐5, arginase activities and oxidative stress in rats penile tissue. J Food Biochem. 2019;43:e12889. https://doi.org/10.1111/jfbc.12889en_US
dc.identifier.urihttps://doi.org/10.1111/jfbc.12889
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/abs/10.1111/jfbc.12889
dc.identifier.urihttp://repository.elizadeuniversity.edu.ng/handle/20.500.12398/835
dc.language.isoenen_US
dc.publisherWileyen_US
dc.subjectAlkaloidsen_US
dc.subjectArginaseen_US
dc.subjectErectile dysfunctionen_US
dc.subjectPhosphodiesterase‐5,en_US
dc.subjectSolanum nigrumen_US
dc.subjectVernonia amygdalinaen_US
dc.titleAlkaloid extracts from Bitter leaf (Vernonia amygdalina) and Black nightshade (Solanum nigrum) inhibit phosphodiesterase‐5, arginase activities and oxidative stress in rats penile tissueen_US
dc.typeArticleen_US
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