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Mar. Drugs 2014, 12(2), 700-718; doi:10.3390/md12020700

Spongionella Secondary Metabolites Protect Mitochondrial Function in Cortical Neurons against Oxidative Stress

1 Departamento de Farmacología, Facultad de Veterinaria, Universidad de Santiago de Compostela, Lugo 27003, Spain 2 Marine Biodiscovery Centre, Department of Chemistry, University of Aberdeen, Meston Walk, Aberdeen, Scotland AB24 3UE, UK 3 Pharmacognosy Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef 32514, Egypt 4 Institute of Medical Sciences, University of Aberdeen, Ashgrove Road West, Aberdeen, Scotland AB25 2ZD, UK
* Author to whom correspondence should be addressed.
Received: 21 November 2013 / Revised: 7 January 2014 / Accepted: 8 January 2014 / Published: 27 January 2014
(This article belongs to the collection Bioactive Compounds from Marine Invertebrates)
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The marine habitat provides a large number of structurally-diverse bioactive compounds for drug development. Marine sponges have been studied over many years and are found to be a rich source of these bioactive chemicals. This study is focused on the evaluation of the activity of six diterpene derivatives isolated from Spongionella sp. on mitochondrial function using an oxidative in vitro stress model. The test compounds include the Gracilins (A, H, K, J and L) and tetrahydroaplysulphurin-1. Compounds were co-incubated with hydrogen peroxide for 12 hours to determine their protective capacities and their effect on markers of apoptosis and Nrf2/ARE pathways was evaluated. Results conclude that Gracilins preserve neurons against oxidative damage, and that in particular, tetrahydroaplysulphurin-1 shows a complete neuroprotective activity. Oxidative stress is linked to mitochondrial dysfunction and consequently to neurodegenerative disorders like Parkinson and Alzheimer diseases, Friedreich ataxia or Amyotrophic lateral sclerosis. This neuroprotection against oxidation conditions suggest that these metabolites could be interesting lead candidates in drug development for neurodegenerative diseases.
Keywords: diterpenes; Porifera; mitochondrial function; oxidative stress; neurodegenerative disorders diterpenes; Porifera; mitochondrial function; oxidative stress; neurodegenerative disorders
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Leirós, M.; Sánchez, J.A.; Alonso, E.; Rateb, M.E.; Houssen, W.E.; Ebel, R.; Jaspars, M.; Alfonso, A.; Botana, L.M. Spongionella Secondary Metabolites Protect Mitochondrial Function in Cortical Neurons against Oxidative Stress. Mar. Drugs 2014, 12, 700-718.

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