{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T10:19:01Z","timestamp":1773829141795,"version":"3.50.1"},"reference-count":48,"publisher":"Walter de Gruyter GmbH","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,7,26]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec id=\"j_jbcpp-2016-0143_s_999_w2aab2b8c82b1b7b1aab1c15b1Aa\">\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>\n                      <jats:italic>Anogeissus leiocarpus<\/jats:italic>\n                      and\n                      <jats:italic>Hunteria umbellata<\/jats:italic>\n                      have been reportedly used in traditional medicine for the management of erectile dysfunction (ED). However, the scientific basis for their use has not been well established. Therefore, this study was designed to investigate the inhibitory effects of water extractable phytochemicals of\n                      <jats:italic>H. umbellata<\/jats:italic>\n                      and\n                      <jats:italic>A. leiocarpus<\/jats:italic>\n                      on phosphodiesterase-5 (PDE-5) and arginase as well as pro-oxidants induced lipid peroxidation in rat penile tissue.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"j_jbcpp-2016-0143_s_998_w2aab2b8c82b1b7b1aab1c15b2Aa\">\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>\n                      The effects of the extracts on important enzymes (PDE-5 and arginase) linked with ED and pro-oxidants (Fe\n                      <jats:sup>2+<\/jats:sup>\n                      and sodium nitroprusside) induced lipid peroxidation were investigated. Also, radicals scavenging and metal chelating abilities were determined. In addition, phenolic contents were determined and characterized using HPLC.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"j_jbcpp-2016-0143_s_997_w2aab2b8c82b1b7b1aab1c15b3Aa\">\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      The results showed that both extracts inhibited PDE-5 and arginase activities in a dose-dependent manner. Inhibitory property of\n                      <jats:italic>A. leiocarpus<\/jats:italic>\n                      (IC\n                      <jats:sub>50<\/jats:sub>\n                      \u2013 174.19 \u03bcg\/mL) was significantly better (p&lt;0.05) than that of\n                      <jats:italic>H. umbellata<\/jats:italic>\n                      (IC\n                      <jats:sub>50<\/jats:sub>\n                      \u2013 537.72 \u03bcg\/mL) in PDE-5 assay. The extracts were potent inhibitors of arginase than PDE-5, and these extracts were equally potent in inhibiting arginase. Furthermore, Fe\n                      <jats:sup>2+<\/jats:sup>\n                      and sodium nitroprusside caused a significant increase in malondialdehyde content; however, both extracts reduced malondialdehyde level in concentration-dependent manner. It is noteworthy that both extracts scavenged radicals (OH* and ABTS*) and chelated Fe\n                      <jats:sup>2+<\/jats:sup>\n                      . HPLC analysis revealed abundance of rutin, chlorogenic acid, gallic acid, caffeic acid, and quercetin, among others.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"j_jbcpp-2016-0143_s_996_w2aab2b8c82b1b7b1aab1c15b4Aa\">\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>The ability of the extracts to inhibit PDE-5, arginase and pro-oxidant induced lipid peroxidation, and chelate metal might suggest their folkloric use for the management of ED.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1515\/jbcpp-2016-0143","type":"journal-article","created":{"date-parts":[[2017,3,18]],"date-time":"2017-03-18T19:27:32Z","timestamp":1489865252000},"page":"393-401","source":"Crossref","is-referenced-by-count":49,"title":["In vitro inhibition of phosphodiesterase-5 and arginase activities from rat penile tissue by two Nigerian herbs (\n                    <i>Hunteria umbellata<\/i>\n                    and\n                    <i>Anogeissus leiocarpus<\/i>\n                    )"],"prefix":"10.1515","volume":"28","author":[{"given":"Ganiyu","family":"Oboh","sequence":"first","affiliation":[{"name":"Functional Food and Nutraceutical Unit , Department of Biochemistry , Federal University of Technology , P.M.B. 704 , Akure , Nigeria , Phone: +2347031388644"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Adeniyi Abiodun","family":"Adebayo","sequence":"additional","affiliation":[{"name":"Functional Food and Nutraceutical Unit , Department of Biochemistry , Federal University of Technology , Akure , Nigeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ayokunle Olubode","family":"Ademosun","sequence":"additional","affiliation":[{"name":"Functional Food and Nutraceutical Unit , Department of Biochemistry , Federal University of Technology , Akure , Nigeria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aline August","family":"Boligon","sequence":"additional","affiliation":[{"name":"Federal University of Santa Maria , Santa Maria , CEP, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2017,3,17]]},"reference":[{"key":"2025121209104062825_j_jbcpp-2016-0143_ref_001_w2aab2b8c82b1b7b1ab2b1b1Aa","doi-asserted-by":"crossref","unstructured":"Ncube NS, Afolayan AJ, Okoh AI. 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