title: Anti-inflammatory effect of rosmarinic acid and an extract of Rosmarinus officinalis in rat models of local and systemic inflammation.
abstract: Rosmarinic acid is a polyphenolic compound and main constituent of Rosmarinus officinalis and has been shown to possess antioxidant and anti-inflammatory properties. We aimed to evaluate the anti-inflammatory properties of rosmarinic acid and of an extract of R. officinalis in local inflammation (carrageenin-induced paw oedema model in the rat), and further evaluate the protective effect of rosmarinic acid in rat models of systemic inflammation: liver ischaemia-reperfusion (I/R) and thermal injury models. In the local inflammation model, rosmarinic acid was administered at 10, 25 and 50 mg/kg (p.o.), and the extract was administered at 10 and 25 mg/kg (equivalent doses to rosmarinic acid groups) to male Wistar rats. Administration of rosmarinic acid and extract at the dose of 25 mg/kg reduced paw oedema at 6 hr by over 60%, exhibiting a dose-response effect, suggesting that rosmarinic was the main contributor to the anti-inflammatory effect. In the liver I/R model, rosmarinic acid was administered at 25 mg/kg (i.v.) 30 min. prior to the induction of ischaemia and led to the significant reduction in the serum concentration of transaminases (AST and ALT) and LDH. In the thermal injury model, rosmarinic acid was administered at 25 mg/kg (i.v.) 5 min. prior to the induction of injury and significantly reduced multi-organ dysfunction markers (liver, kidney, lung) by modulating NF-κB and metalloproteinase-9. For the first time, the anti-inflammatory potential of rosmarinic acid has been identified, as it causes a substantial reduction in inflammation, and we speculate that it might be useful in the pharmacological modulation of injuries associated to inflammation.
authors.affiliation: iMed.ULisboa, Faculty of Pharmacy - University of Lisbon, Lisboa, Portugal.
authors.forename: Joao
authors.initials: J
authors.lastname: Rocha
authors.forename: Maria
authors.initials: M
authors.lastname: Eduardo-Figueira
authors.forename: Andreia
authors.initials: A
authors.lastname: Barateiro
authors.forename: Adelaide
authors.initials: A
authors.lastname: Fernandes
authors.forename: Dora
authors.initials: D
authors.lastname: Brites
authors.forename: Rosario
authors.initials: R
authors.lastname: Bronze
authors.forename: Catarina M M
authors.initials: CM
authors.lastname: Duarte
authors.forename: Ana Teresa
authors.initials: AT
authors.lastname: Serra
authors.forename: Rui
authors.initials: R
authors.lastname: Pinto
authors.forename: Marisa
authors.initials: M
authors.lastname: Freitas
authors.forename: Eduarda
authors.initials: E
authors.lastname: Fernandes
authors.forename: Beatriz
authors.initials: B
authors.lastname: Silva-Lima
authors.forename: Helder
authors.initials: H
authors.lastname: Mota-Filipe
authors.forename: Bruno
authors.initials: B
authors.lastname: Sepodes
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000302:isolation & purification / Q000494:pharmacology*; D000975:Antioxidants / Q000494:pharmacology; D015415:Biomarkers / Q000097:blood; D001992:Bronchoalveolar Lavage Fluid / Q000737:chemistry / Q000276:immunology; D002351:Carrageenan; D002934:Cinnamates / Q000494:pharmacology*; D053630:Depsides / Q000494:pharmacology*; D004195:Disease Models, Animal; D004305:Dose-Response Relationship, Drug; D004487:Edema / Q000097:blood / Q000139:chemically induced / Q000276:immunology / Q000517:prevention & control*; D007249:Inflammation / Q000097:blood / Q000209:etiology / Q000276:immunology / Q000517:prevention & control*; D018836:Inflammation Mediators / Q000097:blood; D008168:Lung / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D008297:Male; D009504:Neutrophils / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects; D008517:Phytotherapy; D010936:Plant Extracts / Q000302:isolation & purification / Q000494:pharmacology*; D010946:Plants, Medicinal; D017208:Rats, Wistar; D015427:Reperfusion Injury / Q000097:blood / Q000209:etiology / Q000276:immunology / Q000517:prevention & control*; D016897:Respiratory Burst / Q000187:drug effects; D027542:Rosmarinus / Q000737:chemistry; D013997:Time Factors; D000097123:Rosmarinic Acid
chemical_list: D000893:Anti-Inflammatory Agents; D000975:Antioxidants; D015415:Biomarkers; D002351:Carrageenan; D002934:Cinnamates; D053630:Depsides; D018836:Inflammation Mediators; D010936:Plant Extracts; D000097123:Rosmarinic Acid