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Antioxidant Activity, Cellular Bioavailability, and Iron and Calcium Management of Neuroprotective and Nonneuroprotective Flavones

Published on Jan 1, 2015in Neurotoxicity Research3.311
· DOI :10.1007/s12640-014-9483-y
Carolina Echeverry10
Estimated H-index: 10
,
Florencia Arredondo10
Estimated H-index: 10
+ 3 AuthorsFederico Dajas20
Estimated H-index: 20
Sources
Abstract
Few studies have been undertaken on the relationship of the structure of flavones and neuroprotection. Previously, we described the structural determinants of the neuroprotective activity of some natural flavones in cerebellar granule neurons in culture against an oxidative insult (H2O2). In the present work, we analyzed anti-oxidant activity, cellular iron, and Ca2+ levels and cellular bioavailability of neuroprotective and nonneuroprotective flavones in the same experimental paradigm. Oxidative cellular damage produced by H2O2 was prevented by all of the studied flavones with rather similar potency for all of them. Labile Iron Pool was neither affected by protective nor nonprotective flavones. Intracellular Ca2+ homeostasis was not affected by protective flavones either. Nonetheless, fisetin, the nonprotective flavone, decreased Ca2+ levels modifying Ca2+ homeostasis. Methylation of the catechol group, although weakens anti-oxidant capacity, keeps the neuroprotective capacity with less degradation and lower toxicity, constituting promising structural alternatives as leads for the design of neuroprotective molecules.
  • References (40)
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References40
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#1Øyvind M. AndersenH-Index: 33
#2Kenneth R. Markham (University of Bergen)H-Index: 31
Separation and Quantification of Flavonoids A. Marston and K. Hostettmann Spectroscopic Techniques Applied to Flavonoids T. Fossen and O.M. Andersen Molecular Biology and Biotechnology of Flavonoid Biosynthesis K.M. Davies and K.E. Schwinn Flavonoids in Foods J.A.M. Kyle and G.G. Duthie Flavonoids in Wine V. Cheynier Dietary Flavonoids and Health - Broadening the Perspective M. Clifford and J.E. Brown Isoflavonoids and Human Health H. Wiseman Flavonoid Functions in Plants K.S. Gould and C. Liste...
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Abstract Ethnopharmacological relevance Quercetin is a ubiquitous flavonoid that is present in numerous plants that are utilized in many different cultures for their nervous system and anticancer effects. To better understand the neuroprotective and antiproliferative activities of quercetin, we present a comprehensive review of the divergent actions that contribute to the ethnopharmacological profile of these plants. Results The pharmacological activities of quercetin that modulate antioxidation...
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Tea is one of the most widely consumed beverages in the world and represents an important source of antioxidants mainly catechins that confer beneficial effects in reducing the risk of cardiovascular diseases, age-related disorders or cancer. In the central nervous system, oxidative stress caused by increased production of reactive oxygen and nitrogen species represents an important mechanism for neuronal dysfunction and cell loss in different neurodegenerative disorders. The neuroprotective eff...
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Quercetin shows structural features that have been related to the antioxidant potency of flavonoids and also shows neuroprotection in different models of oxidative death. Because only a few studies have focused on the flavonoid structural requirements for neuroprotection, this work evaluated the protective capacity of 13 flavones structurally related to quercetin, isolated from Kenyan plants, to rescue primary cerebellar granule neurons from death induced by a treatment with 24 h of hydrogen per...
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#1Thomas Walle (MUSC: Medical University of South Carolina)H-Index: 57
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