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Impact of chitosan-based nanocarriers on cytoskeleton dynamics:Current status and challenges

BIOCELL 2022年第4期46卷 885-891页

作者： M.CAROLINA DI SANTO AGUSTINA ALAIMO ana paula domínguez rubio OSCAR E.PÉREZ Departamento de Química Biológica Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales Consejo Nacional de Investigaciones Científicas y Técnicas(IQUIBICENCONICET)Buenos AiresArgentina

Chitosan-based nanocarriers(CS-NCs)show a promising role in improving drugs and bioactive compounds delivery for ***,the effects exerted by CS-NCs at the cellular level,including their recognition and uptake,have not been fully investigated *** factors,including size,shape,concentration,and surface chemistry of CS-NCs,play an important role in determining the types of intracellular signals *** mechanism of uptake and the involvement of the cytoskeleton during the CS-NCs endocytosis variates among the different cell types as well as further effects observed inside *** the present work,we discuss the effects induced by CS-NCs per se on the cytoskeleton,a key component in cell architecture and *** focus of this report is made on tumoral and normal biological models in which CS-NCs could differentially affect the cell *** recent years reports regarding the impact of CS-NCs on cytoskeleton dynamics and the current techniques for its evaluation are summarized and *** mechanisms underlying cytoskeletal impact after cell exposure to CS-NCs is critical for the design of safest value-added formulations in the biomedical ***,this revision points out some interesting aspects of cytoskeletal changes and cell death encompassing anti-tumoral effects.

关键词： Cytoskeletal dynamics Cellular uptake Endocytosis Nanocarriers Chitosan Bioactive compounds

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Impact of the metabolic syndrome on the evolution of neurodegenerative diseases

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Neural Regeneration Research 2021年第4期16卷 688-689页

作者： ana paula de A.Boleti Jeeser Alves Almeida Ludovico Migliolo S-InovaBiotech Programa de Pós-Graduação em BiotecnologiaUniversidade Católica Dom BoscoCampo GrandeMSBrazil Programa de Pós-Graduação em Ciências do Movimento Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro OesteUniversidade Federal de Mato Grosso do SulCampo GrandeMSBrazil Programa de Pós-graduação em Biologia Celular e Molecular Programa de Pós-graduação em BioquímicaUniversidade Federal do Rio Grande do NorteNatalBrazil

Metabolic syndrome(MetS)might be defined as the simultaneous accumulation of s everal functional changes that frequently occur in adults over 60 years of age(Gomez et al.,2018).The diagnosis of MetS requires the presence of three or more factors such as high body mass,type-2 diabetes mellitus(T2DM),dyslipidemia,and arterial hypertension,which increase the risk of cardiovascular diseases as well as neurological complications,as stroke and dementia(Dyken and Lacoste,2018).Usually,these functional changes coincide and result in insensitivity for example hormones as leptin,adiponectin,and insulin(Dyken and Lacoste,2018).

关键词： diagnosis arterial hypertension

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Land-use change and windstorms legacies drove the recolonization dynamics of laurel forests in Tenerife, Canary islands

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Forest Ecosystems 2023年第1期10卷 113-124页

作者： Vicente Rozas Maria A.Garcia-Lopez Jose M.Olano Gabriel Sanguesa-Barreda Miguel Garcia-Hidalgo Susana Gomez-Gonzalez Roberto Lopez-rubio Jose M.Fernandez-Palacios Ignacio Garcia-Gonzalez Laura Lozano-Lopez paula Garcia-Gonzalez ana I.Garcia-Cervigon EiFAB-iuFOR Universidad de ValladolidCampus Duques de Soria42004SoriaSpain Departamento de Biologia-IVAGRO Universidad de CadizCampus Rio San Pedro11510Puerto RealSpain Center for Climate and Resilience Research(CR)2 Blanco Encalada 20028370449SantiagoChile Area de Biodiversidad y Conservacion Universidad Rey Juan Carlosc/Tulipan s/n28933MostolesSpain Grupo de Ecologia y Biogeografia Insular Universidad de La Laguna38206La LagunaTenerifeSpain BIOAPLIC Departamento de BotanicaEscola Politecnica Superior de EnxenariaCampus TerraUniversidade de Santiago de CompostelaLugo27002Spain

Laurel forests are quite relevant for biodiversity conservation and are among the island ecosystems most severely damaged by human *** the past,Canary laurel forests have been greatly altered by logging,livestock and *** remains of laurel forests are currently protected in the Canary Islands(Spain).However,we miss basic information needed for their restoration and adaptive management,such as tree longevity,growth potential and responsiveness to natural and anthropogenic *** dendrochronological methods,we studied how forest dynamic is related to land-use change and windstorms in two well-preserved laurel forests on Tenerife *** cores were collected from over 80 trees per stand at three stands per *** used ring-width series to estimate tree ages and calculate annual basal area increments(BAI),cumulative diameter increases,and changes indicative of released and suppressed *** tree species were found in all stands,with Laurus novocanariensis,Ilex canariensis and Morella faya being the most common *** some individuals were over 100 years old,61.8%-88.9% of the trees per stand established between 1940 and 1970,coinciding with a post-war period of land abandonment,rural exodus and the onset of a tourism *** trees have shown growth rates larger than 1 cm diameter per year and most species have had increasing BAI trends over the past *** growth releases occurred after windstorms at both sites,but the effects of windstorms were site-dependent,with the 1958 storm affecting mainly the eastern tip of the island(anaga massif)and the 1991 storm the western tip(Teno massif).Given the great ability of laurel forest trees to establish after land use cessation and to increase growth after local disturbances such as windstorms,passive restoration may be sufficient to regenerate this habitat in currently degraded areas.

关键词： Canary islands Dendroecology Disturbance Forest structure Macaronesia Management cessation Tree rings

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Adipose tissue,systematic inflammation,and neurodegenerative diseases

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Neural Regeneration Research 2023年第1期18卷 38-46页

作者： ana paula de A.Boleti Pedro Henrique de O.Cardoso Breno Emanuel F.Frihling Patrícia Souza e Silva Luiz Filipe R.Nde Moraes Ludovico Migliolo S-Inova Biotech Programa de Pós-Graduação em BiotecnologiaUniversidade Católica Dom BoscoCampo GrandeMSBrazil Programa de Pós-Graduação em Biologia Celular e Molecular Programa de Pós-Graduação em BioquímicaUniversidade Federal do Rio Grande do NorteNatalBrazil

Obesity is associated with several diseases,including mental *** tissue is distributed around the internal organs,acting in the regulation of metabolism by storing and releasing fatty acids and adipokine in the *** nutritional intake results in hypertrophy and proliferation of adipocytes,leading to local hypoxia in adipose tissue and changes in these adipokine *** leads to the recruitment of immune cells to adipose tissue and the release of pro-inflammatory *** presence of high levels of free fatty acids and inflammatory molecules interfere with intracellular insulin signaling,which can generate a neuroinflammatory *** this review,we provide an up-to-date discussion of how excessive obesity can lead to possible cognitive *** also address the idea that obesity-associated systemic inflammation leads to neuroinflammation in the brain,particularly the hypothalamus and hippocampus,and that this is partially responsible for these negative cognitive *** addition,we discuss some clinical models and animal studies for obesity and clarify the mechanism of action of anti-obesity drugs in the central nervous system.

关键词： adiposity anti-obesity drugs hypothalamic inflammation metabolic disease neurodegenerative disease neuroinflammation

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