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Carotenoids from microalgae to block oxidative stress.

BioImpacts : BI

Zuluaga M, Gueguen V, Pavon-Djavid G, Letourneur D.
PMID: 28546947
Bioimpacts. 2017;7(1):1-3. doi: 10.15171/bi.2017.01. Epub 2017 Feb 19.

Reactive oxygen species (ROS) are produced under normal physiological conditions and involved in several cellular biochemical processes. Their external or endogenous overproduction induces a disruption of redox signaling and control known as oxidative stress. Under oxidative stress, the cell...

Erratum to: Plasma exchange response in 34 patients with severe optic neuritis.

Journal of neurology

Deschamps R, Gueguen A, Parquet N, Saheb S, Driss F, Mesnil M, Vignal C, Aboab J, Depaz R, Gout O.
PMID: 28597317
J Neurol. 2017 Jul;264(7):1547. doi: 10.1007/s00415-017-8534-8.

No abstract available.

Evaluation of French-language internet sites dealing with multiple sclerosis.

Multiple sclerosis journal - experimental, translational and clinical

Guéguen A, Maillart E, Gallice T, Allaf B.
PMID: 28607728
Mult Scler J Exp Transl Clin. 2016 Jun 15;2:2055217316652419. doi: 10.1177/2055217316652419. eCollection 2016.

BACKGROUND: Information available on the internet has changed patient-neurologist relationships. Its evaluation for multiple sclerosis is only partial, regardless of the language used.OBJECTIVE: We aim to evaluate the content quality and ranking indexes of French-language sites dealing with multiple...

Forests as a natural seismic metamaterial: Rayleigh wave bandgaps induced by local resonances.

Scientific reports

Colombi A, Roux P, Guenneau S, Gueguen P, Craster RV.
PMID: 26750489
Sci Rep. 2016 Jan 11;6:19238. doi: 10.1038/srep19238.

We explore the thesis that resonances in trees result in forests acting as locally resonant metamaterials for Rayleigh surface waves in the geophysics context. A geophysical experiment demonstrates that a Rayleigh wave, propagating in soft sedimentary soil at frequencies...

FEBS letters

Yot P, Gueguen P, Chapeville F.
PMID: 11945280
FEBS Lett. 1968 Aug;1(3):156-158. doi: 10.1016/0014-5793(68)80046-8.

The influence of the esterification of the 3'(2') hydroxyl group of tRNA on the hydrolysis by venom phosphodiesterase (Crotalus adamanteus) was studied. It was shown that this esterification does not change the rate of hydrolysis. At pH 7-8, no...

Idebenone increases mitochondrial complex I activity in fibroblasts from LHON patients while producing contradictory effects on respiration.

BMC research notes

Angebault C, Gueguen N, Desquiret-Dumas V, Chevrollier A, Guillet V, Verny C, Cassereau J, Ferre M, Milea D, Amati-Bonneau P, Bonneau D, Procaccio V, Reynier P, Loiseau D.
PMID: 22192149
BMC Res Notes. 2011 Dec 22;4:557. doi: 10.1186/1756-0500-4-557.

BACKGROUND: Leber's hereditary optic neuropathy (LHON) is caused by mutations in the complex I subunits of the respiratory chain. Although patients have been treated with idebenone since 1992, the efficacy of the drug is still a matter of debate.METHODS:...

Wheat prolamine crosslinking through dityrosine formation catalyzed by peroxidases: improvement in the modification of a poorly accessible substrate by "indirect" catalysis .

Biotechnology and bioengineering

Ferrasson E, Gueguen J, Michon T, Wang W.
PMID: 10099625
Biotechnol Bioeng. 1999 May 20;63(4):449-58. doi: 10.1002/(sici)1097-0290(19990520)63:4<449::aid-bit8>3.0.co;2-m.

"Enzyme-assisted" oxidative polymerization of wheat gliadins was performed in an attempt to obtain new protein-based networks. Two plant peroxidases (soybean and horseradish) were used to induce the dimerization of tyrosine residues. The results show that tyrosines are poorly modified...

PeerJ

Cheung CT, Patinote A, Guiguen Y, Bobe J.
PMID: 30155373
PeerJ. 2018 Aug 23;6:e5534. doi: 10.7717/peerj.5534. eCollection 2018.

The family of forkhead box (Fox) transcription factors regulates gonadogenesis and embryogenesis, but the role of

Evidence for extremely rapid magma ocean crystallization and crust formation on Mars.

Nature

Bouvier LC, Costa MM, Connelly JN, Jensen NK, Wielandt D, Storey M, Nemchin AA, Whitehouse MJ, Snape JF, Bellucci JJ, Moynier F, Agranier A, Gueguen B, Schönbächler M, Bizzarro M.
PMID: 29950620
Nature. 2018 Jun;558(7711):586-589. doi: 10.1038/s41586-018-0222-z. Epub 2018 Jun 27.

The formation of a primordial crust is a critical step in the evolution of terrestrial planets but the timing of this process is poorly understood. The mineral zircon is a powerful tool for constraining crust formation because it can...

An updated assessment of .

PeerJ

Rouzé H, Lecellier GJ, Saulnier D, Planes S, Gueguen Y, Wirshing HH, Berteaux-Lecellier V.
PMID: 28168100
PeerJ. 2017 Jan 05;5:e2856. doi: 10.7717/peerj.2856. eCollection 2017.

The adaptative bleaching hypothesis (ABH) states that, depending on the symbiotic flexibility of coral hosts (i.e., the ability of corals to "switch" or "shuffle" their algal symbionts), coral bleaching can lead to a change in the composition of their...

Volatile element evolution of chondrules through time.

Proceedings of the National Academy of Sciences of the United States of America

Mahan B, Moynier F, Siebert J, Gueguen B, Agranier A, Pringle EA, Bollard J, Connelly JN, Bizzarro M.
PMID: 30082398
Proc Natl Acad Sci U S A. 2018 Aug 21;115(34):8547-8552. doi: 10.1073/pnas.1807263115. Epub 2018 Aug 06.

Chondrites and their main components, chondrules, are our guides into the evolution of the Solar System. Investigating the history of chondrules, including their volatile element history and the prevailing conditions of their formation, has implications not only for the...

Contribution of Viral Genomic Diversity to Oyster Susceptibility in the Pacific Oyster Mortality Syndrome.

Frontiers in microbiology

Delmotte J, Chaparro C, Galinier R, de Lorgeril J, Petton B, Stenger PL, Vidal-Dupiol J, Destoumieux-Garzon D, Gueguen Y, Montagnani C, Escoubas JM, Mitta G.
PMID: 32754139
Front Microbiol. 2020 Jul 10;11:1579. doi: 10.3389/fmicb.2020.01579. eCollection 2020.

Juvenile Pacific oysters (

Showing 1 to 12 of 119 entries