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Olchawa MM, Krzysztynska-Kuleta OI, Mokrzynski KT, Sarna PM, Sarna TJ. Quercetin protects ARPE-19 cells against photic stress mediated by the products of rhodopsin photobleaching. Photochem Photobiol Sci 2020; 19:1022-1034. [DOI: 10.1039/d0pp00165a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exposure to intense light could increase the risk of phototoxic reactions mediated by rhodopsin photobleaching products (RPBP) that might accumulate in photoreceptor outer segments (POS).
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Affiliation(s)
- Magdalena M. Olchawa
- Department of Biophysics
- Faculty of Biochemistry
- Biophysics and Biotechnology
- Jagiellonian University
- 30-387 Krakow
| | - Olga I. Krzysztynska-Kuleta
- Department of Biophysics
- Faculty of Biochemistry
- Biophysics and Biotechnology
- Jagiellonian University
- 30-387 Krakow
| | - Krystian T. Mokrzynski
- Department of Biophysics
- Faculty of Biochemistry
- Biophysics and Biotechnology
- Jagiellonian University
- 30-387 Krakow
| | - Piotr M. Sarna
- Fluid Mechanics Laboratory
- Faculty of Mechanical Engineering
- Cracow University of Technology
- Poland
| | - Tadeusz J. Sarna
- Department of Biophysics
- Faculty of Biochemistry
- Biophysics and Biotechnology
- Jagiellonian University
- 30-387 Krakow
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Lupo G, Cambria MT, Olivieri M, Rocco C, Caporarello N, Longo A, Zanghì G, Salmeri M, Foti MC, Anfuso CD. Anti-angiogenic effect of quercetin and its 8-methyl pentamethyl ether derivative in human microvascular endothelial cells. J Cell Mol Med 2019; 23:6565-6577. [PMID: 31369203 PMCID: PMC6787496 DOI: 10.1111/jcmm.14455] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/03/2019] [Accepted: 05/17/2019] [Indexed: 12/27/2022] Open
Abstract
Angiogenesis is involved in many pathological states such as progression of tumours, retinopathy of prematurity and diabetic retinopathy. The latter is a more complex diabetic complication in which neurodegeneration plays a significant role and a leading cause of blindness. The vascular endothelial growth factor (VEGF) is a powerful pro‐angiogenic factor that acts through three tyrosine kinase receptors (VEGFR‐1, VEGFR‐2 and VEGFR‐3). In this work we studied the anti‐angiogenic effect of quercetin (Q) and some of its derivates in human microvascular endothelial cells, as a blood retinal barrier model, after stimulation with VEGF‐A. We found that a permethylated form of Q, namely 8MQPM, more than the simple Q, is a potent inhibitor of angiogenesis both in vitro and ex vivo. Our results showed that these compounds inhibited cell viability and migration and disrupted the formation of microvessels in rabbit aortic ring. The addition of Q and more significantly 8MQPM caused recoveries or completely re‐establish the transendothelial electrical resistance (TEER) to the control values and suppressed the activation of VEGFR2 downstream signalling molecules such as AKT, extracellular signal‐regulated kinase, and c‐Jun N‐terminal kinase. Taken together, these data suggest that 8MQPM might have an important role in the contrast of angiogenesis‐related diseases.
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Affiliation(s)
- Gabriella Lupo
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
| | - Maria Teresa Cambria
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
| | - Melania Olivieri
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
| | - Concetta Rocco
- Institute of Biomolecular Chemistry of CNR, Catania, Italy
| | - Nunzia Caporarello
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
| | - Anna Longo
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
| | - Guido Zanghì
- Department of Surgery (CHIR), School of Medicine, University of Catania, Catania, Italy
| | - Mario Salmeri
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
| | - Mario C Foti
- Institute of Biomolecular Chemistry of CNR, Catania, Italy
| | - Carmelina Daniela Anfuso
- Section of Medical Biochemistry, Department of Biomedical and Biotechnological Sciences (Biometec), School of Medicine, University of Catania, Catania, Italy
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