1. J Biotechnol. 2020 Feb 10;309:29-33. doi: 10.1016/j.jbiotec.2019.12.016. Epub 2019 Dec 26. Hydroxytyrosol: A natural compound with promising pharmacological activities. Bertelli M(1), Kiani AK(2), Paolacci S(3), Manara E(4), Kurti D(5), Dhuli K(6), Bushati V(7), Miertus J(8), Pangallo D(9), Baglivo M(10), Beccari T(11), Michelini S(12). Author information: (1)EBTNA-Lab, Via Delle Maioliche, 57/G, 38068, Rovereto, TN, Italy; MAGI's Lab, Via Delle Maioliche, 57/D, 38068, Rovereto, TN, Italy; MAGI Euregio, Via Maso della Pieve, 60/A, 39100, Bolzano, Italy. Electronic address: matteo.bertelli@assomagi.org. (2)Allama Iqbal Open University, Sector H-8, 44000, Islamabad, Pakistan. Electronic address: ayshakiani@gmail.com. (3)MAGI's Lab, Via Delle Maioliche, 57/D, 38068, Rovereto, TN, Italy. Electronic address: stefano.paolacci@assomagi.org. (4)MAGI Euregio, Via Maso della Pieve, 60/A, 39100, Bolzano, Italy. Electronic address: elena.manara@assomagi.org. (5)MAGI Balkans, Rruga Andon Zako Cajupi, 1019, Tirana, Albania. Electronic address: danjela.kurti@hotmail.com. (6)MAGI Balkans, Rruga Andon Zako Cajupi, 1019, Tirana, Albania. Electronic address: kristjana.dhuli@gmail.com. (7)MAGI Balkans, Rruga Andon Zako Cajupi, 1019, Tirana, Albania. Electronic address: genetica.clinica@assomagi.org. (8)Genius n.o., Mestská poliklinika Starohájska 2, 91701, Trnava, Slovakia. Electronic address: jan.miertus@gmail.com. (9)Institute of Molecular Biology, Slovak Academy of Sciences, Dúbravská cesta 21, Bratislava, 84551, Slovakia. Electronic address: domenico.pangallo@savba.sk. (10)MAGI Euregio, Via Maso della Pieve, 60/A, 39100, Bolzano, Italy. Electronic address: mirko.baglivo@assomagi.org. (11)Department of Pharmaceutical Sciences, University of Perugia, Via Ariodante Fabretti, 48, 06123, Perugia, Italy. Electronic address: tommaso.beccari@unipg.it. (12)Department of Vascular Rehabilitation, San Giovanni Battista Hospital, Via Luigi Ercole Morselli, 13, 00148, Rome, Italy. Electronic address: s.michelini@acismom.it. Hydroxytyrosol is a phenolic phytochemical with antioxidant properties in vitro. It is a natural compound that can be found in olive leaves and oil. The main dietary source of hydroxytyrosol is extra virgin olive oil. Due to its bioavailability, chemical properties and easy formulation along with its lack of toxicity, hydroxytyrosol is considered an excellent food supplement by the nutraceutical and food industries. The purpose of this review is to discuss the potential therapeutic effects of hydroxytyrosol in vivo. To do so, we conducted an electronic search in PubMed and other literature databases using "hydroxytyrosol", "beneficial effect/s", "pharmacology" as key-words. From this search, we found that hydroxytyrosol has anti-inflammatory, anti-tumor, antiviral, antibacterial and antifungal properties. Hydroxytyrosol also improves endothelial dysfunction, decreases oxidative stress, and is neuro- and cardio-protective. Due to all these biological properties, hydroxytyrosol is currently the most actively investigated natural phenol. The evidence presented in this review suggests that hydroxytyrosol has great pharmacological potential. Copyright © 2019 Elsevier B.V. All rights reserved. DOI: 10.1016/j.jbiotec.2019.12.016 PMID: 31884046 [Indexed for MEDLINE] Conflict of interest statement: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.