{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T10:33:59Z","timestamp":1762079639714,"version":"build-2065373602"},"reference-count":50,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2022,12,14]],"date-time":"2022-12-14T00:00:00Z","timestamp":1670976000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Jilin Provincial Research Foundation","award":["YDZJ202201ZYTS082","JJKH20211211KJ","JJKH20221092KJ","2022B10"],"award-info":[{"award-number":["YDZJ202201ZYTS082","JJKH20211211KJ","JJKH20221092KJ","2022B10"]}]},{"name":"Education Department of Jilin Province","award":["YDZJ202201ZYTS082","JJKH20211211KJ","JJKH20221092KJ","2022B10"],"award-info":[{"award-number":["YDZJ202201ZYTS082","JJKH20211211KJ","JJKH20221092KJ","2022B10"]}]},{"name":"Norman Bethune Program of Jilin University","award":["YDZJ202201ZYTS082","JJKH20211211KJ","JJKH20221092KJ","2022B10"],"award-info":[{"award-number":["YDZJ202201ZYTS082","JJKH20211211KJ","JJKH20221092KJ","2022B10"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biomimetics"],"abstract":"<jats:p>Periodontitis is an inflammatory disease induced by plaque microorganisms. In the clinic, antibiotic assistant periodontal mechanical therapy is the most effective therapy for the treatment of periodontitis. However, the drug resistance of the antibiotics and the repeated coming and diminishing of the disorder of oxidation\u2013reduction balance in the inflammatory tissue could not meet the high requirements for periodontic health control in long periods. Deuterohemin-ala-his-thr-val-glu-lys (DhHP-6) is a biomimetic oxidase-mimicking enzyme that simulates the reactive oxygen radical scavenger function of heme by synthesizing the new molecular material following the key structure and amino acid sequence of heme. In this article, we report the antioxidant and anti-inflammatory properties of DhHP-6 by building a inflammatory model for human gingival fibroblasts (HGFs) stimulated by lipolysaccharide (LPS) and its effects on periodontitis in Wistar rats. DhHP-6 reduced the oxidative stress of HGFs by increasing the amount of the reductase species of glutathione (GSH) and catalase (CAT) while decreasing the amount of oxidase species of malonaldehyde (MDA) and reactive oxygen species (ROS). DhHP-6 had a dose-dependent protective effect on alveolar bone absorption in rats with periodontitis, enhanced antioxidant capacity, and reduced inflammation. As determined by Micro-CT scanning, DhHP-6 reduced alveolar bone loss and improved the bone structure of the left maxillary first molar of rats. There were no obvious morphological and histological differences in the rat organs with or without DhHP-6 treatment. These results suggest that DhHP-6 can be used to treat periodontitis by increasing the expression levels of antioxidant enzymes and antioxidants in systemic and local tissues, thereby reducing levels of oxidation products and cyto-inflammatory factors. The synergistic antioxidant and anti-inflammatory effects of DhHP-6 suggest that there are promising applications of this biomimetic enzyme molecular material for the next generation of agents for periodontitis therapy.<\/jats:p>","DOI":"10.3390\/biomimetics7040240","type":"journal-article","created":{"date-parts":[[2022,12,14]],"date-time":"2022-12-14T02:22:41Z","timestamp":1670984561000},"page":"240","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Deuterohemin-Ala-His-Thr-Val-Glu-Lys (DhHP-6) Mimicking Enzyme as Synergistic Antioxidant and Anti-Inflammatory Material for Periodontitis Therapy"],"prefix":"10.3390","volume":"7","author":[{"given":"Jiaqing","family":"Yan","sequence":"first","affiliation":[{"name":"Hospital of Stomatology, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Min","family":"Liu","sequence":"additional","affiliation":[{"name":"Hospital of Stomatology, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yan","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hospital of Stomatology, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ying","family":"Zhu","sequence":"additional","affiliation":[{"name":"Hospital of Stomatology, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qiuyan","family":"Chen","sequence":"additional","affiliation":[{"name":"Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yimeng","family":"Yang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Min","family":"Hu","sequence":"additional","affiliation":[{"name":"Hospital of Stomatology, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9516-2800","authenticated-orcid":false,"given":"Huimei","family":"Yu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"S159","DOI":"10.1002\/JPER.18-0006","article-title":"Staging and grading of periodontitis: Framework and proposal of a new classification and case definition","volume":"89","author":"Tonetti","year":"2018","journal-title":"J. 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