{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T20:11:35Z","timestamp":1773259895885,"version":"3.50.1"},"reference-count":66,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2017,5,12]],"date-time":"2017-05-12T00:00:00Z","timestamp":1494547200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o Estadual de Amparo \u00e0 Pesquisa do Estado do Esp\u00edrito Santo"},{"name":"Programa Nacional de P\u00f3s-Doutorado - CAPES","award":["1625451"],"award-info":[{"award-number":["1625451"]}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The Helicobacter pylori bacterium is one of the main causes of chronic gastritis, peptic ulcers, and even gastric cancer. It affects an average of half of the world population. Its difficult eradication depends upon multi-drug therapy. Since its classification as a group 1 carcinogenic by International Agency for Research on Cancer (IARC), the importance of H. pylori eradication has obtained a novel meaning. There is considerable interest in alternative therapies for the eradication of H. pylori using compounds from a wide range of natural products. In the present study, we investigated the antibacterial property of the isocoumarin paepalantine against H. pylori and it exhibited significant anti-H. pylori activity at a minimum inhibitory concentration (MIC) of 128 \u03bcg\/mL and at a minimum bactericidal concentration (MBC) of 256 \u03bcg\/mL. The scanning electron microscopy (SEM) revealed significant morphological changes of the bacterial cell as a response to a sub-MIC of paepalantine, suggesting a penicillin-binding protein (PBP) inhibition. Computational studies were carried out in order to study binding modes for paepalantine in PBP binding sites, exploring the active and allosteric sites. The data from the present study indicates that paepalantine exhibits significant anti-H. pylori activity, most likely by inhibiting membrane protein synthesis.<\/jats:p>","DOI":"10.3390\/molecules22050786","type":"journal-article","created":{"date-parts":[[2017,5,12]],"date-time":"2017-05-12T11:03:53Z","timestamp":1494587033000},"page":"786","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Anti-Helicobacter pylori Activity of Isocoumarin Paepalantine: Morphological and Molecular Docking Analysis"],"prefix":"10.3390","volume":"22","author":[{"given":"Jo\u00e3o","family":"Damasceno","sequence":"first","affiliation":[{"name":"Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo\u2013UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ricardo","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo\u2013UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rita","family":"Gon\u00e7alves","sequence":"additional","affiliation":[{"name":"Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo\u2013UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil"},{"name":"Department of Pharmaceutical Sciences, Federal University of Espirito Santo\u2013UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rodrigo","family":"Kitagawa","sequence":"additional","affiliation":[{"name":"Graduate Program in Pharmaceutical Sciences, Federal University of Espirito Santo\u2013UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil"},{"name":"Department of Pharmaceutical Sciences, Federal University of Espirito Santo\u2013UFES, Marechal Campos Av., 1468, Vitoria 29043-900, ES, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,5,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"335","DOI":"10.1590\/S1676-24442003000400011","article-title":"Biopatologia do Helicobacter pylori","volume":"39","author":"Ladeira","year":"2003","journal-title":"J. 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