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Effects of propranolol on growth, lipids and energy metabolism and oxidative stress response of Phaeodactylum tricornutum

2020Journal article Open access
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dc.contributor.authorDuarte, Bernardo
dc.contributor.authorFeijão, Eduardo
dc.contributor.authorCarvalho, Ricardo Cruz de
dc.contributor.authorDuarte, Irina A.
dc.contributor.authorSilva, Marisa
dc.contributor.authorMatos, Ana Rita
dc.contributor.authorCabrita, Maria Teresa
dc.contributor.authorNovais, Sara C.
dc.contributor.authorLemos, Marco F.L.
dc.contributor.authorMarques, João Carlos
dc.contributor.authorCaçador, Isabel
dc.contributor.authorReis-Santos, Pactick
dc.contributor.authorFonseca, Vanessa F.
dc.date.accessioned2021-08-03T15:03:35Z
dc.date.available2021-08-03T15:03:35Z
dc.date.issued2020
dc.descriptionThe authors would like to thank Fundação para a Ciência e a Tecnologia (FCT) for funding the research via project grants PTDC/MAR-EST/3048/2014 (BIOPHARMA), PTDC/CTA-AMB/30056/2017 (OPTOX), UIDB/04292/2020 and UID/MULTI/04046/2019. Work was also funded by the Integrated Programme of SR&TD SmartBioR (reference Centro-01-0145-FEDER-000018), co-funded by Centro 2020 program, Portugal 2020, European Union, through the European Regional Development Fund. B. Duarte and V. F. Fonseca were supported by researcher contracts (CEECIND/00511/2017 and DL57/2016/CP1479/CT0024). P. Reis-Santos was supported by FCT through a postdoctoral grant (SFRH/BPD/95784/2013). I.A. Duarte was supported by a PhD grant (SFRH/BD/138376/2018).
dc.description.abstractPresent demographic trends suggest a rise in the contributions of human pharmaceuticals into coastal ecosystems, underpinning an increasing demand to evaluate the ecotoxicological effects and implications of drug residues in marine risk assessments. Propranolol, a non-selective B-adrenoceptor blocker, is used worldwide to treat high blood pressure conditions and other related cardiovascular conditions. Although diatoms lack B-adrenoceptors, this microalgal group presents receptor-like kinases and proteins with a functional analogy to the animal receptors and that can be targeted by propranolol. In the present work, the authors evaluated the effect of this non-selective B-adrenoceptor blocker in diatom cells using P. tricornutum as a model organism, to evaluate the potential effect of this compound in cell physiology (growth, lipids and energy metabolism and oxidative stress) and its potential relevance for marine ecosystems. Propranolol exposure leads to a significant reduction in diatom cell growth, more evident in the highest concentrations tested. This is likely due to the observed impairment of the main primary photochemistry processes and the enhancement of the mitochondrial respiratory activity. More specifically, propranolol decreased the energy transduction from photosystem II (PSII) to the electron transport chain, leading to an increase in oxidative stress levels. Cells exposed to propranolol also exhibited high-dissipated energy flux, indicating that this excessive energy is effciently diverted, to some extent, from the photosystems, acting to prevent irreversible photoinhibition. As energy production is impaired at the PSII donor side, preventing energy production through the electron transport chain, diatoms appear to be consuming storage lipids as an energy backup system, to maintain essential cellular functions. This consumption will be attained by an increase in respiratory activity. Considering the primary oxygen production and consumption pathways, propranolol showed a significant reduction of the autotrophic O2 production and an increase in the heterotrophic mitochondrial respiration. Both mechanisms can have negative effects on marine trophic webs, due to a decrease in the energetic input from marine primary producers and a simultaneous oxygen production decrease for heterotrophic species. In ecotoxicological terms, bio-optical and fatty acid data appear as highly effcient tools for ecotoxicity assessment, with an overall high degree of classification when these traits are used to build a toxicological profile, instead of individually assessed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDuarte, B.; Feijão, E.; Cruz de Carvalho, R.; Duarte, I.A.; Silva, M.; Matos, A.R.; Cabrita, M.T.; Novais, S.C.; Lemos, M.F.L.; Marques, J.C.; Caçador, I.; Reis-Santos, P.; Fonseca, V.F. Effects of Propranolol on Growth, Lipids and Energy Metabolism and Oxidative Stress Response of Phaeodactylum tricornutum. Biology 2020, 9, 478. https://doi.org/10.3390/biology9120478pt_PT
dc.identifier.doi10.3390/biology9120478pt_PT
dc.identifier.issn2079-7737
dc.identifier.urihttp://hdl.handle.net/10400.8/5997
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationDevelopment and validation of bio-optical ecotoxicological tests in marine phototrophs.
dc.relationMarine and Environmental Sciences Centre
dc.relationBiosystems & Integrative Sciences Institute
dc.relationNot Available
dc.relationBIOCONNECT - CONECTIVIDADE EM POPULAÇÕES DE PEIXES ESTUARINOS E COSTEIROS: MARCADORES NATURAIS COMO UM INSTRUMENTO PARA GESTÃO E CONSERVAÇÃO
dc.relationPharmaceuticals in the environment: occurrence and exposure effects in non-target fish species
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEnergy metabolismpt_PT
dc.subjectPharmatoxicologypt_PT
dc.subjectPhotobiologypt_PT
dc.subjectPrimary producerspt_PT
dc.subjectToxicophenomicspt_PT
dc.titleEffects of propranolol on growth, lipids and energy metabolism and oxidative stress response of Phaeodactylum tricornutumpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleDevelopment and validation of bio-optical ecotoxicological tests in marine phototrophs.
oaire.awardTitleMarine and Environmental Sciences Centre
oaire.awardTitleBiosystems & Integrative Sciences Institute
oaire.awardTitleNot Available
oaire.awardTitleBIOCONNECT - CONECTIVIDADE EM POPULAÇÕES DE PEIXES ESTUARINOS E COSTEIROS: MARCADORES NATURAIS COMO UM INSTRUMENTO PARA GESTÃO E CONSERVAÇÃO
oaire.awardTitlePharmaceuticals in the environment: occurrence and exposure effects in non-target fish species
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR-EST%2F3048%2F2014/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F04046%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F00511%2F2017%2FCP1387%2FCT0039/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBPD%2F95784%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F138376%2F2018/PT
oaire.citation.issue12pt_PT
oaire.citation.titleBiologypt_PT
oaire.citation.volume9pt_PT
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oaire.fundingStream6817 - DCRRNI ID
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