(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/161847 |
Resumo: | The occurrence of neurodegenerative diseases (NDs), including Parkinson's disease (PD), is increasing among our population at very high rates. Increased life expectancy, genetic predisposition, exposure to chemicals and environmental factors as well as lifestyle, are correlated with the progression of these diseases. However, we still do not fully understand how these causes can influence mechanisms adjacent to these pathologies, making it difficult to find a cure or an effective treatment. Epidemiological and observational studies have demonstrated the ability of polyphenols and their derivatives, namely low-molecular weight (poly)phenol metabolites (LMWPM) to promote health benefits. So far, the evidence of neuroprotective effects of some LMWPM have been described in preclinical PD models. In this project, we aim to i) identify and quantify the presence of LMWPM within the brain, and ii) evaluate the neuroprotective effects of a polyphenol- rich diet consumption using a PD rodent model. PD-like pathology was induced by injecting mice intraperitoneally with MPTP (4x15 mg/kg). We also aim to identify and quantify the presence of LMWPM within the brain. Mice injected with the toxin and fed berry-enriched diet, compared to those injected with MPTP and fed standard diet, showed a decrease in the concentration of certain pro-inflammatory mediators (IL-23 (at 24 hours) and CCL22 (at 7 days)). Additionally, it has been demonstrated that berries were effective in maintaining Tyrosine Hydroxylase (TH) levels and the number of microglia/macrophages cells, as well as their body cell area, at values closely resembling those noted in the control group. The metabolomic profiling of the LMWPM in plasma and brain revealed 11 metabolites present in both the brain and blood. To the best of our knowledge the metabolite 2,4 dihydroxybenzoic acid and trihydroxybenzaldheyde have been described for the first time in the brain. Three metabolites: benzoic acid, dihydrocaffeic acid and pyrogallol show higher concentrations in the brain compared to plasma. Finally, none of the LMWPM showed different concentrations in mice injected with MPTP and supplemented with berries compared with mice fed on standard food and injected with MPTP. Our results showed that a (poly)phenol-rich diet could attenuate different hallmarks in PD. However, further studies are needed to disclose the effects of LMWPM and whether they may help to averting or delay the initiation of NDs such as PD. |
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(Poly)phenol metabolomic signature in the brain of a parkinson´s disease modelMPTPneuroinflammationneurodegenerationlow-molecular weight (poly)phenol metabolitesbrain disordersagingDomínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e TecnologiasThe occurrence of neurodegenerative diseases (NDs), including Parkinson's disease (PD), is increasing among our population at very high rates. Increased life expectancy, genetic predisposition, exposure to chemicals and environmental factors as well as lifestyle, are correlated with the progression of these diseases. However, we still do not fully understand how these causes can influence mechanisms adjacent to these pathologies, making it difficult to find a cure or an effective treatment. Epidemiological and observational studies have demonstrated the ability of polyphenols and their derivatives, namely low-molecular weight (poly)phenol metabolites (LMWPM) to promote health benefits. So far, the evidence of neuroprotective effects of some LMWPM have been described in preclinical PD models. In this project, we aim to i) identify and quantify the presence of LMWPM within the brain, and ii) evaluate the neuroprotective effects of a polyphenol- rich diet consumption using a PD rodent model. PD-like pathology was induced by injecting mice intraperitoneally with MPTP (4x15 mg/kg). We also aim to identify and quantify the presence of LMWPM within the brain. Mice injected with the toxin and fed berry-enriched diet, compared to those injected with MPTP and fed standard diet, showed a decrease in the concentration of certain pro-inflammatory mediators (IL-23 (at 24 hours) and CCL22 (at 7 days)). Additionally, it has been demonstrated that berries were effective in maintaining Tyrosine Hydroxylase (TH) levels and the number of microglia/macrophages cells, as well as their body cell area, at values closely resembling those noted in the control group. The metabolomic profiling of the LMWPM in plasma and brain revealed 11 metabolites present in both the brain and blood. To the best of our knowledge the metabolite 2,4 dihydroxybenzoic acid and trihydroxybenzaldheyde have been described for the first time in the brain. Three metabolites: benzoic acid, dihydrocaffeic acid and pyrogallol show higher concentrations in the brain compared to plasma. Finally, none of the LMWPM showed different concentrations in mice injected with MPTP and supplemented with berries compared with mice fed on standard food and injected with MPTP. Our results showed that a (poly)phenol-rich diet could attenuate different hallmarks in PD. However, further studies are needed to disclose the effects of LMWPM and whether they may help to averting or delay the initiation of NDs such as PD.A incidência de doenças neurodegenerativas (NDs), incluindo a doença de Parkinson (PD), está a aumentar consideravelmente na nossa população. O aumento da esperança média de vida, predisposição genética, exposição a produtos químicos e fatores ambientais, assim como o estilo de vida, estão correlacionados com a progressão destas doenças. Contudo, ainda não compreendemos completamente como estas causas podem influenciar os mecanismos relacionados com estas patologias, o que torna difícil a descoberta de uma cura ou de um tratamento eficaz. Estudos epidemiológicos e observacionais têm demonstrado a capacidade dos (poli)fenóis e dos seus derivados, nomeadamente metabólitos de baixo peso molecular (LMWPM), para promover benefícios para a saúde. Até agora, foram descritas evidências de efeitos neuroprotetores de alguns LMWPM em modelos pré-clínicos de PD. Neste projeto, pretendemos i) identificar e quantificar a presença de LMWPM no cérebro e ii) avaliar os efeitos neuroprotetores do consumo de uma dieta rica em (poli)fenóis usando um modelo de roedor de DP. A patologia semelhante à DP foi induzida pela injeção intraperitoneal de MPTP em ratos (4x15 mg/kg). Também pretendemos identificar e quantificar a presença de LMWPM no cérebro. Os ratos injetados com a toxina e alimentados com uma dieta enriquecida com bagas, em comparação com aqueles injetados com MPTP e alimentados com uma dieta padrão, demonstraram uma diminuição na concentração de certos mediadores pró-inflamatórios (IL-23 às 24 horas e CCL22 aos 7 dias). Adicionalmente, ficou demonstrado que as bagas foram eficazes na manutenção dos níveis de tirosina hidroxilase (TH), assim como manter o número microglias/macrófagos, bem como a sua área celular, em valores muito semelhantes aos observados no grupo de controlo. O perfil metabolómico de LMWPM no plasma e no cérebro revelou 11 metabolitos presentes tanto no cérebro como no sangue. Até onde sabemos, o ácido 2,4-di-hidroxibenzóico e o tri-hidroxibenzaldeído foram descritos pela primeira vez no cérebro. Três metabolitos - ácido benzóico, dihidrocaféico e pirogalol - apresentaram concentrações mais elevadas no cérebro em comparação com o plasma. Finalmente, nenhum dos LMWPM apresentou concentrações significativamente diferentes em ratos injetados com MPTP e suplementados com frutos silvestres comparativamente ratos com comida standard e injetados com MPTP. Os nossos resultados mostraram que uma dieta rica em (poli)fenóis poderia atenuar diferentes características da PD. No entanto, são necessários mais estudos para compreender os efeitos dos LMWPM e se estes podem ajudar a prevenir ou atrasar o início de doenças neurodegenerativas como a DP.Ávila-Gálvez, María ÁngelesLoncarevic-Vasiljkovic, NatasaRUNRocha, Bernardo André Botelho Soares2023-12-062024-10-01T00:00:00Z2023-12-06T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/161847enginfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T05:44:40Zoai:run.unl.pt:10362/161847Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:58:39.584297Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
title |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
spellingShingle |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model Rocha, Bernardo André Botelho Soares MPTP neuroinflammation neurodegeneration low-molecular weight (poly)phenol metabolites brain disorders aging Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
title_short |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
title_full |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
title_fullStr |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
title_full_unstemmed |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
title_sort |
(Poly)phenol metabolomic signature in the brain of a parkinson´s disease model |
author |
Rocha, Bernardo André Botelho Soares |
author_facet |
Rocha, Bernardo André Botelho Soares |
author_role |
author |
dc.contributor.none.fl_str_mv |
Ávila-Gálvez, María Ángeles Loncarevic-Vasiljkovic, Natasa RUN |
dc.contributor.author.fl_str_mv |
Rocha, Bernardo André Botelho Soares |
dc.subject.por.fl_str_mv |
MPTP neuroinflammation neurodegeneration low-molecular weight (poly)phenol metabolites brain disorders aging Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
topic |
MPTP neuroinflammation neurodegeneration low-molecular weight (poly)phenol metabolites brain disorders aging Domínio/Área Científica::Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
description |
The occurrence of neurodegenerative diseases (NDs), including Parkinson's disease (PD), is increasing among our population at very high rates. Increased life expectancy, genetic predisposition, exposure to chemicals and environmental factors as well as lifestyle, are correlated with the progression of these diseases. However, we still do not fully understand how these causes can influence mechanisms adjacent to these pathologies, making it difficult to find a cure or an effective treatment. Epidemiological and observational studies have demonstrated the ability of polyphenols and their derivatives, namely low-molecular weight (poly)phenol metabolites (LMWPM) to promote health benefits. So far, the evidence of neuroprotective effects of some LMWPM have been described in preclinical PD models. In this project, we aim to i) identify and quantify the presence of LMWPM within the brain, and ii) evaluate the neuroprotective effects of a polyphenol- rich diet consumption using a PD rodent model. PD-like pathology was induced by injecting mice intraperitoneally with MPTP (4x15 mg/kg). We also aim to identify and quantify the presence of LMWPM within the brain. Mice injected with the toxin and fed berry-enriched diet, compared to those injected with MPTP and fed standard diet, showed a decrease in the concentration of certain pro-inflammatory mediators (IL-23 (at 24 hours) and CCL22 (at 7 days)). Additionally, it has been demonstrated that berries were effective in maintaining Tyrosine Hydroxylase (TH) levels and the number of microglia/macrophages cells, as well as their body cell area, at values closely resembling those noted in the control group. The metabolomic profiling of the LMWPM in plasma and brain revealed 11 metabolites present in both the brain and blood. To the best of our knowledge the metabolite 2,4 dihydroxybenzoic acid and trihydroxybenzaldheyde have been described for the first time in the brain. Three metabolites: benzoic acid, dihydrocaffeic acid and pyrogallol show higher concentrations in the brain compared to plasma. Finally, none of the LMWPM showed different concentrations in mice injected with MPTP and supplemented with berries compared with mice fed on standard food and injected with MPTP. Our results showed that a (poly)phenol-rich diet could attenuate different hallmarks in PD. However, further studies are needed to disclose the effects of LMWPM and whether they may help to averting or delay the initiation of NDs such as PD. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-12-06 2023-12-06T00:00:00Z 2024-10-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
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http://hdl.handle.net/10362/161847 |
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http://hdl.handle.net/10362/161847 |
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eng |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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