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Conti V, Randriamboavonjy JI, Rafatro H, Manzo V, Dal Col J, Filippelli A, Corbi G, Tesse A. SIRT1 Signaling Is Involved in the Vascular Improvement Induced by Moringa Oleifera Seeds during Aging. Pharmaceuticals (Basel) 2023; 16:ph16050761. [PMID: 37242544 DOI: 10.3390/ph16050761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 05/12/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023] Open
Abstract
Vascular aging is linked to reduce NO bioavailability, endothelial dysfunction, oxidative stress, and inflammation. We previously showed that a 4-week treatment of middle-aged Wistar rats (MAWRs, 46 weeks old) with Moringa oleifera seed powder (MOI, 750 mg/kg/day) improved vascular function. Here, we investigated the involvement of SIRT1 in MOI-induced vascular improvement. MAWRs were treated with a standard or MOI-containing diet. Young rats (YWR, 16 weeks old) were the controls and received a standard diet. The hearts and aortas were harvested to evaluate SIRT1 and FOXO1 expression via Western blot and/or immunostaining, SIRT1 activity via a fluorometric assay, and oxidative stress using the DHE fluorescent probe. In the hearts and aortas, SIRT1 expression, reduced in MAWRs compared to YWRs, was enhanced in MOI MAWRs. In the hearts, SIRT1 activity did not differ between YWRs and MAWRs, whereas it was increased in MOI MAWRs compared with them. In the aortas, SIRT1 activity decreased in MAWRs, and it was similar in the MOI MAWRs and YWRs. FOXO1 expression increased in the nuclei of MAWR aortas compared to YWR and was reversed in MOI MAWRs. Interestingly, MOI treatment normalized oxidative stress enhanced in MAWRs, in both the heart and aorta. These results demonstrate the protective role of MOI against cardiovascular dysfunction due to aging via enhanced SIRT1 function and subsequently reduced oxidative stress.
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Affiliation(s)
- Valeria Conti
- Department of Medicine Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, S. Allende, 84081 Baronissi, SA, Italy
- Clinical Pharmacology Unit, San Giovanni di Dio e Ruggi d'Aragona University Hospital, San Leonardo 1, 84131 Salerno, SA, Italy
| | - Joseph Iharinjaka Randriamboavonjy
- INSERM, Université de Nantes, CHU Nantes, CNRS, L'Institut du Thorax, CEDEX 01, F-44000 Nantes, France
- Laboratoire d'Évaluation Pharmaco Clinique (LEPC), Institut Malgache de Recherches Appliquées (IMRA) Fondation Albert et Suzanne Rakoto-Ratsimamanga (FASRR), Avarabohitra Itaosy, Antananarivo 102, Madagascar
| | - Herintsoa Rafatro
- Laboratoire d'Évaluation Pharmaco Clinique (LEPC), Institut Malgache de Recherches Appliquées (IMRA) Fondation Albert et Suzanne Rakoto-Ratsimamanga (FASRR), Avarabohitra Itaosy, Antananarivo 102, Madagascar
| | - Valentina Manzo
- Clinical Pharmacology Unit, San Giovanni di Dio e Ruggi d'Aragona University Hospital, San Leonardo 1, 84131 Salerno, SA, Italy
| | - Jessica Dal Col
- Department of Medicine Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, S. Allende, 84081 Baronissi, SA, Italy
| | - Amelia Filippelli
- Department of Medicine Surgery and Dentistry, Scuola Medica Salernitana, University of Salerno, S. Allende, 84081 Baronissi, SA, Italy
- Clinical Pharmacology Unit, San Giovanni di Dio e Ruggi d'Aragona University Hospital, San Leonardo 1, 84131 Salerno, SA, Italy
| | - Graziamaria Corbi
- Department of Translational Medical Sciences, University of Naples Federico II, 80131 Naples, NA, Italy
| | - Angela Tesse
- INSERM, Université de Nantes, CHU Nantes, CNRS, L'Institut du Thorax, CEDEX 01, F-44000 Nantes, France
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