{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T17:17:20Z","timestamp":1787851040351,"version":"build-2784847793"},"reference-count":52,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2022,6,23]],"date-time":"2022-06-23T00:00:00Z","timestamp":1655942400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Deanship of Scientific Research","award":["22UQU4331174DSR13"],"award-info":[{"award-number":["22UQU4331174DSR13"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Antioxidants"],"abstract":"<jats:p>One of the most severe human health problems is gastric ulceration. The main aim of our study is to explore the gastroprotective effect of the Psidium guajava seeds extract (PGE). Metabolic profiling based on LC-HRMS for the extract led to the dereplication of 23 compounds (1\u201323). We carried out a gastric ulcer model induced by indomethacin in male albino rats in vivo and the extract of PGE was investigated at a dose of 300 mg\/kg in comparison to cimetidine (100 mg\/kg). Furthermore, the assessment of gastric mucosal lesions and histopathology investigation of gastric tissue was done. It has been proved that Psidium guajava seeds significantly decreased the ulcer index and protected the mucosa from lesions. The antiulcer effect of Psidium guajava seed extract, which has the power of reducing the ensuing inflammatory reactions, can counteract the inflammation induced by indomethacin by the downregulation of relative genes expression (IL-1\u03b2, IL-6, and TNF-\u03b1). Moreover, PGE significantly downregulated the increased COX-2, TGF-\u03b2, and IGF-1 relative genes expression, confirming its beneficial effect in ulcer healing. Moreover, the possible PGE antioxidant potential was determined by in vitro assays using hydrogen peroxide and superoxide radical scavenging and revealed high antioxidant potential. Additionally, on the putatively annotated metabolites, an in silico study was conducted, which emphasized the extract\u2019s antiulcer properties might be attributed to several sterols such as stigmasterol and campesterol. The present study provided evidence of Psidium guajava seeds considered as a potential natural gastroprotective agent.<\/jats:p>","DOI":"10.3390\/antiox11071230","type":"journal-article","created":{"date-parts":[[2022,6,23]],"date-time":"2022-06-23T21:25:00Z","timestamp":1656019500000},"page":"1230","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Antiulcer Potential of Psidium guajava Seed Extract Supported by Metabolic Profiling and Molecular Docking"],"prefix":"10.3390","volume":"11","author":[{"given":"Nourhan Hisham","family":"Shady","sequence":"first","affiliation":[{"name":"Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City 61111, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hend Samy","family":"Abdullah","sequence":"additional","affiliation":[{"name":"Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City 61111, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sherif A.","family":"Maher","sequence":"additional","affiliation":[{"name":"Department of Biochemistry, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City 61111, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3021-8767","authenticated-orcid":false,"given":"Amgad","family":"Albohy","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The British University in Egypt, Cairo 11837, Egypt"},{"name":"The Center for Drug Research and Development (CDRD), Faculty of Pharmacy, The British University in Egypt, Cairo 11837, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmoud A.","family":"Elrehany","sequence":"additional","affiliation":[{"name":"Department of Biochemistry, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City 61111, Egypt"},{"name":"Department of Biochemistry, Faculty of Medicine, Minia University, Minia 61519, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6909-7440","authenticated-orcid":false,"given":"Fatma Alzahraa","family":"Mokhtar","sequence":"additional","affiliation":[{"name":"Department of Pharmacognosy, Faculty of Pharmacy, ALSalam University, Kafr El Zayat 31616, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hesham Farouk","family":"Oraby","sequence":"additional","affiliation":[{"name":"Deanship of Scientific Research, Umm Al-Qura University, Makkah 21955, Saudi Arabia"},{"name":"Department of Crop Science, Faculty of Agriculture, Zagazig University, Zagazig 44519, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3035-661X","authenticated-orcid":false,"given":"Ahmed M.","family":"Shawky","sequence":"additional","affiliation":[{"name":"Science and Technology Unit (STU), Umm Al-Qura University, Makkah 21955, Saudi Arabia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Usama Ramadan","family":"Abdelmohsen","sequence":"additional","affiliation":[{"name":"Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia City 61111, Egypt"},{"name":"Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia 61519, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,23]]},"reference":[{"key":"ref_1","unstructured":"Caballero, B., Finglas, P., and Toldr\u00e1, F. 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