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Ferrara V, Toti A, Lucarini E, Parisio C, Micheli L, Ciampi C, Margiotta F, Crocetti L, Vergelli C, Giovannoni MP, Di Cesare Mannelli L, Ghelardini C. Protective and Pain-Killer Effects of AMC3, a Novel N-Formyl Peptide Receptors (FPRs) Modulator, in Experimental Models of Rheumatoid Arthritis. Antioxidants (Basel) 2023; 12:1207. [PMID: 37371936 DOI: 10.3390/antiox12061207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/26/2023] [Accepted: 05/31/2023] [Indexed: 06/29/2023] Open
Abstract
Rheumatoid arthritis is an autoimmune disorder that causes chronic joint pain, swelling, and movement impairment, resulting from prolonged inflammation-induced cartilage and bone degradation. The pathogenesis of RA, which is still unclear, makes diagnosis and treatment difficult and calls for new therapeutic strategies to cure the disease. Recent research has identified FPRs as a promising druggable target, with AMC3, a novel agonist, showing preclinical efficacy in vitro and in vivo. In vitro, AMC3 (1-30 µM) exhibited significant antioxidant effects in IL-1β (10 ng/mL)-treated chondrocytes for 24 h. AMC3 displayed a protective effect by downregulating the mRNA expression of several pro-inflammatory and pro-algic genes (iNOS, COX-2, and VEGF-A), while upregulating genes essential for structural integrity (MMP-13, ADAMTS-4, and COLIAI). In vivo, AMC3 (10 mg kg-1) prevented hypersensitivity and restored postural balance in CFA-injected rats after 14 days. AMC3 attenuated joint alterations, reduced joint inflammatory infiltrate, pannus formation, and cartilage erosion. Chronic AMC3 administration reduced transcriptional changes of genes causing excitotoxicity and pain (EAATs and CCL2) and prevented morphological changes in astrocytes, including cell body hypertrophy, processes length, and thickness, caused by CFA in the spinal cord. This study demonstrates the usefulness of AMC3 and establishes the groundwork for further research.
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Affiliation(s)
- Valentina Ferrara
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Alessandra Toti
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Elena Lucarini
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Carmen Parisio
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Laura Micheli
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Clara Ciampi
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Francesco Margiotta
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Letizia Crocetti
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmaceutical and Nutraceutical Section, University of Florence, 50139 Florence, Italy
| | - Claudia Vergelli
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmaceutical and Nutraceutical Section, University of Florence, 50139 Florence, Italy
| | - Maria Paola Giovannoni
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmaceutical and Nutraceutical Section, University of Florence, 50139 Florence, Italy
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health-NEUROFARBA-Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy
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Bird G, Braithwaite I, Harper J, Koorevaar I, van den Berg M, Maijers I, Kearns N, Dilcher M, Jennings L, Fingleton J, Shortt N, Weatherall M, Beasley R. Rhinothermy delivered by nasal high flow therapy in the treatment of the common cold: a randomised controlled trial. BMJ Open 2021; 11:e047760. [PMID: 34848508 PMCID: PMC8634207 DOI: 10.1136/bmjopen-2020-047760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The common cold is the most common infectious disease affecting humans and has a substantial economic impact on society. Human rhinoviruses, which cause almost two-thirds of colds, have demonstrated temperature-dependent replication which is optimal between 33°C and 35°C. METHODS This randomised, single-blind, parallel-group trial completed at a single-centre in New Zealand, recruited 170 participants aged 18-75 years (mean age 27.5 years) who were within 48 hours of common cold symptom onset and had a symptom score (the Modified Jackson Score (MJS)) ≥7 and a negative point-of-care test for influenza. Participants were blinded to the intervention and randomised (1:1) to 5 days of either nasal high flow rhinothermy (rNHF) (100% humidified air delivered at 35 L/min and 41°C for 2 hours daily) (n=85) or 'sham' rhinothermy (100% humidified air delivered at 10 L/min and 31°C for 10 min daily) (n=85) and completed daily symptom diaries, which included the MJS, for 14 days, to investigate whether rNHF reduced common cold symptom severity and duration compared with 'sham' rhinothermy. RESULTS An intention-to-treat superiority analysis included all randomised participants and showed no difference between treatment groups for the primary outcome, the day 4 MJS analysed by analysis of covariance: mean (SD) 6.33 (3.97) for rNHF vs 5.8 (3.15) for 'sham'; estimated difference (95% CI) 0.37 (-0.69 to 1.42), p=0.49. There was no difference in time until resolution of symptoms: mean (SD) 5.96 (4.47) days for rNHF vs 6.42 (4.09) days for 'sham'; estimated difference (95% CI) 1.02 (0.75 to 1.38), p=0.91. There were no serious adverse events related to the study treatments. CONCLUSIONS This well-powered, single-blind randomised controlled trial does not provide evidence that 5 days of rNHF (100% humidified air heated to 41°C delivered at 35 L/min for 2 hours daily) reduces common cold symptom severity or duration. However, investigation of rNHF in the treatment of influenza is warranted. TRIAL REGISTRATION NUMBER ACTRN12617001340325.
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Affiliation(s)
- Grace Bird
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | | | - James Harper
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - Iris Koorevaar
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | | | - Ingrid Maijers
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - Nethmi Kearns
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - Meik Dilcher
- Canterbury Health Laboratories, Christchurch, New Zealand
| | - Lance Jennings
- Canterbury Health Laboratories, Christchurch, New Zealand
| | - James Fingleton
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - Nick Shortt
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | | | - Richard Beasley
- Medical Research Institute of New Zealand, Wellington, New Zealand
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