M
Mario Allegra
Researcher at University of Palermo
Publications - 77
Citations - 5138
Mario Allegra is an academic researcher from University of Palermo. The author has contributed to research in topics: Indicaxanthin & Oxidative stress. The author has an hindex of 28, co-authored 61 publications receiving 4481 citations. Previous affiliations of Mario Allegra include University of Texas Health Science Center at San Antonio & Hebrew University of Jerusalem.
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Journal ArticleDOI
Chemical and physical properties and potential mechanisms: melatonin as a broad spectrum antioxidant and free radical scavenger.
Dun Xian Tan,Russel J. Reiter,Lucien C. Manchester,Mei ting Yan,Mamdouh R. El-Sawi,Rosa M. Sainz,Juan C. Mayo,Ron Kohen,Mario Allegra,Rudiger Hardeland +9 more
TL;DR: Under in vivo conditions, melatonin is often several times more potent than vitamin C and E in protecting tissues from oxidative injury when compared at an equivalent dosage (micromol/kg).
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The chemistry of melatonin's interaction with reactive species
TL;DR: This review focuses on the direct radical scavenging activity of melatonin and provides a summary of the mechanisms of the reactions between the indoleamine and reactive species in pure chemical solutions.
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Antioxidant activities of sicilian prickly pear (Opuntia ficus indica) fruit extracts and reducing properties of its betalains: betanin and indicaxanthin.
Daniela Butera,Luisa Tesoriere,Francesca Di Gaudio,A. Bongiorno,Mario Allegra,Anna Maria Pintaudi,Rohn Kohen,Maria A. Livrea +7 more
TL;DR: Findings suggest that the above betalains contribute to the antioxidant activity of prickly pear fruits.
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Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans
TL;DR: The results show that cactus pear fruit is a source of bioavailable betalains and suggest that indicaxanthin and betanin may be involved in the observed protection of LDL against ex vivo-induced oxidative modifications.
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Supplementation with cactus pear (Opuntia ficus-indica) fruit decreases oxidative stress in healthy humans: a comparative study with vitamin C
TL;DR: Consumption of cactus pear fruit positively affects the body's redox balance, decreases oxidative damage to lipids, and improves antioxidant status in healthy humans, and components of c desert pear fruit other than antioxidant vitamins may play a role in the observed effects.