Histological effects of chitosan, chitosan-carried hyaluronic acid, and photobiomodulation on palatal wound healing in rats: an in vivo study.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Histological effects of chitosan, chitosan-carried hyaluronic acid, and photobiomodulation on palatal wound healing in rats: an in vivo study.
Συγγραφείς: Esfahanizadeh N; Department of Periodontics, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, 19395-1495, Tehran, Iran., Soleimani M; Department of Periodontics, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, 19395-1495, Tehran, Iran., Ghaemi S; Department of Periodontics, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, 19395-1495, Tehran, Iran., Mortazavi P; Department of Pathology, Faculty of Specialized Veterinary Sciences, Science and Research Branch, Islamic Azad University, 1477893855, Tehran, Iran., Hoseinzadeh HA; Department of Clinical Sciences, Karaj Branch, Islamic Azad University, 3149968111, Karaj, Iran., Hakimiha N; Laser Application in Medical Sciences Research Center, Shahid Beheshti University of Medical Sciences, 1989934148, Tehran, Iran., Hatami H; Department of Pharmaceutics, School of Pharmacy, Mashhad University of Medical Sciences, 91775-1365, Mashhad, Iran., Mosaddad SA; Department of Research Analytics , Saveetha Institute of Medical and Technical Sciences,Saveetha Dental College and Hospitals, Saveetha University, 600077, Tamil Nadu, Chennai, India. semosadd@ucm.es.; Department of Conservative Dentistry and Prosthodontics, Faculty of Dentistry, Complutense University of Madrid (UCM), 28040, Plaza Ramón y Cajal s/n, Madrid, Spain. semosadd@ucm.es.
Πηγή: Clinical oral investigations [Clin Oral Investig] 2026 Oct 15; Vol. 30 (11). Date of Electronic Publication: 2026 Oct 15.
Τύπος έκδοσης: Journal Article
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Springer-Verlag Country of Publication: Germany NLM ID: 9707115 Publication Model: Electronic Cited Medium: Internet ISSN: 1436-3771 (Electronic) Linking ISSN: 14326981 NLM ISO Abbreviation: Clin Oral Investig Subsets: MEDLINE
Imprint Name(s): Publication: Berlin : Springer-Verlag
Original Publication: Berlin : Springer, c1997-
Ιατρικοί όροι (MeSH): Hyaluronic Acid*/pharmacology , Chitosan*/pharmacology , Wound Healing*/drug effects , Wound Healing*/radiation effects , Palate*/injuries , Palate*/pathology , Low-Level Light Therapy*, Animals ; Rats, Wistar ; Male ; Rats ; Re-Epithelialization ; Random Allocation
Περίληψη: Objectives: To compare the histological effects of topical chitosan (CS), a hyaluronic acid-chitosan gel (HA/CS), and photobiomodulation (PBM) on palatal wound healing in rats.
Methods: Sixty male Wistar rats were randomized to control, CS, HA/CS, or PBM groups (n = 15/group). Standardized 5-mm full-thickness palatal wounds were created. Gels were applied three times daily; PBM (660 nm, 150 mW, 4.2 J/cm², 14 s) was administered on days 0, 1, 3, 5, 7, 10, and 13. Five independent animals/group were assessed on days 3, 7, and 14. The animal was the experimental unit, and re-epithelialization was the prespecified primary outcome. Ordinal scores were compared at each endpoint using Kruskal-Wallis and Bonferroni-adjusted Dunn tests.
Results: HA/CS had higher re-epithelialization scores than control on days 3 (adjusted p = 0.003) and 7 (adjusted p = 0.024), and than PBM on day 3 (adjusted p = 0.015). PBM exceeded control on day 7 (adjusted p = 0.024). All day-14 animals had the maximum epithelial score. HA/CS had higher fibroblast scores than control on day 3; all interventions had higher fibroblast and angiogenesis scores than control on days 7 and 14. Collagen scores exceeded control with CS and HA/CS on day 3 and HA/CS on days 7 and 14.
Conclusions: The tested HA/CS formulation showed favorable early epithelial and selected stromal findings. Day-14 epithelial scores showed a ceiling effect. HA-specific effects and HA-CS synergy cannot be established.
(© 2026. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Competing Interests: Declarations. Ethics approval and consent to participate: The animal study protocol was approved by the Ethics Committee of the Faculty of Dentistry,Tehran Medical Sciences, Islamic Azad University (IR.IAU.DENTAL.REC.1402.116). Consent for publication: Not applicable. Competing interests: The authors declare no competing interests.
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Contributed Indexing: Keywords: Chitosan; Hyaluronic acid; Low-level light therapy; Palate, hard; Rats, wistar; Wound healing
Substance Nomenclature: 9004-61-9 (Hyaluronic Acid)
9012-76-4 (Chitosan)
Entry Date(s): Date Created: 20261015 Date Completed: 20261015 Latest Revision: 20261015
Update Code: 20261016
DOI: 10.1007/s00784-026-07221-y
PMID: 42878922
Βάση Δεδομένων: MEDLINE
Περιγραφή
ISSN:1436-3771
DOI:10.1007/s00784-026-07221-y