Nrf2-mediated cytoprotective effect of four different hyaluronic acids by molecular weight in human tenocytes / Marialucia Gallorini, Anna C. Berardi, Clarissa Gissi, Amelia Cataldi, Leonardo Osti
Abstract Non-traumatic rotator cuff tears (RCTs) are a frequent and potentially disabling injury. There is growing evidence that hyaluronic acid (HA) is effective for pain relief and to counteract inflammation in RCTs, however, its effective role in tendinopathies remains poorly studied. This study aims to disclose a possible molecular mechanism underlying the cytoprotective effects of four different HA preparations (Artrosulfur HA ® , Synolis VA ® , Hyalgan ® and Hyalubrix ® ) under H 2 O 2 -induced oxidative stress. Expression-levels of Lactate dehydrogenase (LDH) released were quantified in cell supernatants, CD44 expression levels were analysed by fluorescence microscopy, the mitochondrial membrane depolarisation (TMRE assay) was measured by flow cytometry and the role of the transcription factor Nrf2 was investigated as a potential therapeutic target for RCT treatment. The modulation of extracellular matrix- (ECM) related protein expression (Integrin β1, pro-collagen 1A2 and collagen 1A1) and autophagy occurrence (Erk 1/2 and phosphoErk 1/2 and LC3B), were all investigated by Western Blot. Results demonstrate that Artrosulfur HA, Hyalubrix and Hyalgan improve cell escape from H 2 O 2 -induced oxidative stress, decreasing cytotoxicity, reducing Nrf2 expression and enhancing catalase recovery. This study lays the grounds for further investigations insight novel pharmaceutical strategies targeting key effectors involved in the molecular cascade triggered by HA.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2020 |
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| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:28 |
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| Enthalten in: |
Journal of drug targeting - 28(2020), 2, Seite 212-224 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Gallorini, Marialucia [VerfasserIn] |
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| Links: |
FID Access [lizenzpflichtig] |
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| Themen: |
Autophagy |
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| Umfang: |
1 Online-Ressource (13 p) |
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| doi: |
10.1080/1061186X.2019.1648476 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
KFL011193735 |
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| 520 | |a Abstract Non-traumatic rotator cuff tears (RCTs) are a frequent and potentially disabling injury. There is growing evidence that hyaluronic acid (HA) is effective for pain relief and to counteract inflammation in RCTs, however, its effective role in tendinopathies remains poorly studied. This study aims to disclose a possible molecular mechanism underlying the cytoprotective effects of four different HA preparations (Artrosulfur HA ® , Synolis VA ® , Hyalgan ® and Hyalubrix ® ) under H 2 O 2 -induced oxidative stress. Expression-levels of Lactate dehydrogenase (LDH) released were quantified in cell supernatants, CD44 expression levels were analysed by fluorescence microscopy, the mitochondrial membrane depolarisation (TMRE assay) was measured by flow cytometry and the role of the transcription factor Nrf2 was investigated as a potential therapeutic target for RCT treatment. The modulation of extracellular matrix- (ECM) related protein expression (Integrin β1, pro-collagen 1A2 and collagen 1A1) and autophagy occurrence (Erk 1/2 and phosphoErk 1/2 and LC3B), were all investigated by Western Blot. Results demonstrate that Artrosulfur HA, Hyalubrix and Hyalgan improve cell escape from H 2 O 2 -induced oxidative stress, decreasing cytotoxicity, reducing Nrf2 expression and enhancing catalase recovery. This study lays the grounds for further investigations insight novel pharmaceutical strategies targeting key effectors involved in the molecular cascade triggered by HA | ||
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