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Dendritic spine degeneration:a primary mechanism in the aging process

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neural Regeneration Research 2025年第6期20卷 1696-1698页

作者： Gonzalo Flores Leonardo Aguilar-hernández Fernado García-Dolores Humberto nicolini Andrea Judith Vázquez-hernández Hiram Tendilla-beltrán Instituto de Fisiología Benemérita Universidad Autónoma de Puebla(BUAP)PueblaMexico Instituto de Ciencias Forenses(InCIFO) Tribunal Superior de Justicia de la Ciudad de México(TSJCDMX).Mexico CityMexico Instituto nacional de Medicina Genómica(InMEGEn) Mexico CityMexico

Recent reports suggest that aging is not solely a physiological process in living beings;instead, it should be considered a pathological process or disease(Amorim et al., 2022). Consequently, this process involves a wide range of factors, spanning from genetic to environmental factors, and even includes the gut microbiome(GM)(Mayer et al., 2022). All these processes coincide at some point in the inflammatory process, oxidative stress, and apoptosis, at different degrees in various organs and systems that constitute a living organism(Mayer et al., 2022;Aguilarhernández et al., 2023).

关键词： aging process stress

Targeting harmful effects of non-excitatory amino acids as an alternative therapeutic strategy to reduce ischemic damage

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neural Regeneration Research 2025年第9期20卷 2454-2463页

作者： Victoria Jiménez Carretero IrisÁlvarez-Merz Jorge hernández-Campano Sergei A.Kirov Jesús M.hernández-Guijo Department of Pharmacology and Therapeutic School of MedicineUniv.Autónoma de MadridMadridSpain Ramón y Cajal Institute for Health Research(IRYCIS) Neurobiology-Research ServiceHospital Ramón y CajalMadridSpain Institute of neurobiology Faculty of Mathematics and Natural SciencesHeinrich Heine University DüsseldorfDüsseldorfGermany Department of neuroscience and Regenerative Medicine&Department of neurosurgery Medical College of Georgia at Augusta UniversityAugustaGAUSA

The involvement of the excitatory amino acids glutamate and aspartate in ce rebral ischemia and excitotoxicity is ***,the role of non-excitatory amino acids in brain damage following a stroke or brain trauma remains largely *** release of amino acids by necrotic cells in the ischemic core may contribute to the expansion of the *** findings indicated that the reversible loss of field excitato ry postsynaptic potentials caused by transient hypoxia became irreversible when exposed to a mixture of just four non-excitatory amino acids(L-alanine,glycine,L-glutamine,and L-serine)at their plasma *** amino acids induce swelling in the somas of neurons and astrocytes during hypoxia,along with permanent dendritic damage mediated by n-methyl-D-aspartate *** n-methyl-D-aspartate receptors prevented neuronal damage in the presence of these amino acids during *** is likely that astroglial swelling caused by the accumulation of these amino acids via the alanine-serine-cysteine transporter 2 exchanger and system n transporters activates volume-regulated anion channels,leading to the release of excitotoxins and subsequent neuronal damage through n-methyl-D-aspartate receptor ***,previously unrecognized mechanisms involving non-excitatory amino acids may contribute to the progression and expansion of brain injury in neurological emergencies such as stroke and traumatic brain *** these pathways co uld highlight new therapeutic targets to mitigate brain injury.

关键词： cell swelling n-methyl-D-aspartate receptor non-excitatory amino acids stroke synaptic transmission

Astrocytes, reactive astrogliosis, and glial scar formation in traumatic brain injury

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neural Regeneration Research 2025年第4期20卷 973-989页

作者： María belén Cieri Alberto Javier Ramos Laboratorio de neuropatología Molecular IBCN UBA-CONICETFacultad de MedicinaUniversidad de Buenos AiresBuenos AiresArgentina

Traumatic brain injury is a global health crisis,causing significant death and disability *** that follows traumatic brain injury has serious consequences for neuronal survival and cognitive impairments,with astrocytes involved in this *** traumatic brain injury,astrocytes rapidly become reactive,and astrogliosis propagates from the injury core to distant brain *** astroglial proteins are downregulated near the traumatic brain injury core,while pro-inflammatory astroglial genes are *** altered gene expression is considered a pathological remodeling of astrocytes that produces serious consequences for neuronal survival and cognitive *** addition,glial scar formed by reactive astrocytes is initially necessary to limit immune cell infiltration,but in the long term impedes axonal reconnection and functional *** therapeutic strategies for traumatic brain injury are focused on preventing acute ***,cannabinoids,progesterone,beta-blockers,and cerebrolysin demonstrate neuroprotective benefits but most of them have not been studied in the context of *** this review,we discuss the cell signaling pathways activated in reactive astrocytes following traumatic brain injury and we discuss some of the potential new strategies aimed to modulate astroglial responses in traumatic brain injury,especially using cell-targeted strategies with miRnAs or lncRnA,viral vectors,and repurposed drugs.

关键词： astrocyte glial scar innate immunity neuroinflammation stab injury Toll-like receptors

Data-driven drug repositioning using olfactory omics profiles:challenges and perspectives in neurodegeneration

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neural Regeneration Research 2025年第7期20卷 1997-1998页

作者： Paz Cartas-Cejudo Adriana Cortés Mercedes Lachén-Montes Elena Anaya-Cubero Joaquín Fernández-Irigoyen Enrique Santamaría Clinical neuroproteomics Unit Proteomics PlatformNavarrabiomedHospitalario Universitario de Navarra(HUN)Universidad Pública de Navarra(UPNA)IdiSNANavarra Institute for Health ResearchPamplonaSpain

Data-driven drug repositioning using olfactory omics profiles-challenges and perspectives in neurodegeneration:neurodegenerative diseases are characterized by progressive degeneration and loss of neuronal function in the central nervous *** diseases are often characterized as proteinopathies,which are disorders primarily driven by the aggregation or misfolding of specific amyloid proteins within cells,leading to their dysfunction and eventual *** the gain-of-function hypothesis related to the aggregation of these proteins,recently,an alternative hypothesis regarding the loss-of-function of the soluble monomeric proteins during the process of aggregation into amyloids is gaining *** last event is called proteinopenia and refers to conditions characterized by a deficiency or decrease in the levels of specific soluble proteins in the body(Ezzat et al.,2023).It has been demonstrated that levels of soluble proteins involved in neurodegenerative diseases are decreased.

关键词： diseases drug amyloid

Using GEDI lidar data and airborne laser scanning to assess height growth dynamics in fast-growing species:a showcase in Spain

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Forest Ecosystems 2021年第1期8卷 182-198页

作者： Juan Guerra-hernández Adrián Pascual 3edata Centro de iniciativas empresariaisFundación CEL.O Palomar s/n27004 LugoSpain Forest Research Centre School of AgricultureUniversity of LisbonTapada da Ajuda1349-017 LisbonPortugal Center for Global Discovery and Conservation Science Arizona State UniversityHiloHA 96720USA

Background:The nASA’s Global Ecosystem Dynamics Investigation(GEDI)satellite mission aims at scanning forest ecosystems on a multi-temporal short-rotation *** GEDI data can validate and update statistics from nationwide airborne laser scanning(ALS).We present a case in the northwest of Spain using GEDI statistics and nationwide ALS surveys to estimate forest dynamics in three fast-growing forest ecosystems comprising 211,346 *** objectives were:i)to analyze the potential of GEDI to detect disturbances,ii)to investigate uncertainty source regarding non-positive height increments from the 2015–2017 ALS data to the 2019 GEDI laser shots and iii)to estimate height growth using polygons from the Forest Map of Spain(FMS).A set of 258 national Forest Inventory plots were used to validate the observed height ***:The spatio-temporal assessment from ALS surveying to GEDI scanning allowed the large-scale detection of *** mean annual height growths were 0.79(SD=0.63),0.60(SD=0.42)and 0.94(SD=0.75)m for Pinus pinaster,Pinus radiata and Eucalyptus spp.,*** median annual values from the ALS-GEDI positive increments were close to nFI-based growth values computed for Pinus pinaster and Pinus radiata,*** effect of edge border,spatial co-registration of GEDI shots and the influence of forest cover in the observed dynamics were important factors to considering when processing ALS data and GEDI ***:The use of GEDI laser data provides valuable insights for forest industry operations especially when accounting for fast ***,errors derived from positioning,ground finder and canopy structure can introduce uncertainty to understand the detected growth patterns as documented in this *** analysis of forest growth using ALS and GEDI would benefit from the generalization of common rules and data processing schemes as the GEDI mission is increasingly being utilized in the forest remote sensing community.

关键词： Forest inventory Productivity Multi-temporal LiDAR Full-waveform(FW) Satellite mapping

Habitat use and space preferences of Eurasian Bullfinches(Pyrrhula pyrrhula)in northwestern Iberia throughout the year

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Avian Research 2021年第1期12卷 37-51页

作者： Angel hernández Departamento de Ciencias Agroforestales Area de ZoologiaUniversidad de ValladolidCampus de PalenciaPalenciaEspana Instituto Universitario de Investigacion en Gestion Forestal Sostenible Universidad de ValladolidCampus de PalenciaPalenciaEspana

Background:For all vertebrates in general,a concerted effort to move beyond single season research is vital to improve our understanding of species *** of habitat use and selection by Eurasian Bullfinches(Pyrrhula pyrrhula)is limited with regard to the non-breeding *** date,research on the habitat of the Iberian subspecies iberiae consists of very general *** relation to space use,only broad features are available for the entire distribution range of Eurasian Bullfinches,including ***:In this study,seasonal preferences regarding habitat and space in a population of Eurasian Bullfinches are examined for the first time in the Iberian Peninsula,through direct observation during a six-year *** essential habitat components,substrate selection and perch height were ***:Hedgerows were the key essential habitat component for bullfinches during all ***,small poplar plantations became increasingly important from winter to *** perched mostly in shrubs/trees throughout the year,but there were significant seasonal changes in substrate use,ground and herbs being of considerable importance during *** the year,over half of the records corresponded to feeding,reaching almost 90%in ***,bullfinches perched noticeably lower while *** bullfinches perched markedly higher than females,notably singing males in *** perched at a height not much lower than that of *** all seasons,males tended to feed at greater heights than *** of different ages and sexes were seen bathing in all seasons except ***:Hedgerow habitat in general appeared to be valuable for bullfinches throughout the *** summer and autumn,they selected sites with an abundance of food and shade,as well as shelter,a much-needed requirement for fledglings and moulting *** was usually a close link between the most used

关键词： Habitat use Perch height Pyrrhula pyrrhula iberiae Seasonal variation Substrate selection Water bathing

Internal dispersal of seed-inhabiting insects by vertebrate frugivores:a review and prospects

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Integrative Zoology 2011年第3期6卷 213-221页

作者： Ángel hernÁndez Department of Agroforestry University of ValladolidPalenciaSpain

The finding that some seed-inhabiting insects can survive passage through the entire digestive tract of seed-dispersing vertebrates is relatively recent,but evidence suggests that it does ***,I document this phenomenon,discuss its qualitative and quantitative dimensions,and offer suggestions for further *** few documented cases that I review include plant species belonging to different families,with varied fleshy fruit types,number of seeds per fruit and seed *** vertebrate frugivores involved include passerines that feed on relatively small fruits,and galliforms,and perissodactyls and primates that feed on larger *** seed-inhabiting insects in-volved are the larvae of seed-infesting wasps,parasitoid wasps and seed-infesting *** phenomenon has been verified in open,rural ecosystems in north America and Southern Europe,and in tropical and subtropical forests in South *** varied scenarios suggest that the qualitative dimension of the phenomenon is considerably greater than known thus far.A simple method for detecting new events is ***,re-search must also focus on the identity and biology of seed-feeding insects of wild fleshy fruits and their *** survival rates of seed-inhabiting insects after vertebrate gut passage are *** phenomenon generally appears to favor insect dispersal.

关键词： digestion-resistant insects endozoochory frugivory tetratrophic interactions tritrophic interactions

Design of multilayer hybrid sol-gel coatings with bifunctional barrier-bioactive response on the Elektron 21 magnesium alloy for biomedical applications

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Journal of Magnesium and Alloys 2021年第6期9卷 2097-2112页

作者： K.S.Durán n.hernández L.M.Rueda C.A.hernández-Barrios A.E.Coy F.Viejo Grupo de Investigación en Desarrollo y Tecnología de nuevos Materiales(GIMAT) Universidad Industrial de Santander9 Cra.27Colombia Grupo de Investigación de las Ciencias de las Ingenierías(GICI) Universidad de San BuenaventuraCartagenaCalle Real de TerneraDiagonal 32#30-966Colombia

The present study aims to develop multilayer barrier-bioactive hybrid sol-gel coatings from a mixture of the silane precursors tetraethylorthosilicate(TEOS)and glycidoxypropyltriethoxysilane(GPTMS)deposited on the Elektron 21 magnesium *** purpose of the inner layer(barrier coating)was to provide corrosion protection to the magnesium alloy,whereas the outer layer(bioactive coating)was doped with different Ca and Mg contents to produce a bioactive *** coatings were characterised using scanning electron microscopy(SEM)and their corrosion behaviour was evaluated by anodic polarisation and electrochemical impedance spectroscopy after immersion in simulated body fluid(SBF)at 37±0.5°*** experimental results showed that the multilayer coatings increased the corrosion resistance of the alloy up to three orders of magnitude during immersion in SBF *** the other hand,the presence of Ca and Mg in the bioactive coating promoted the growth of apatite-like ***,an increment of salt content favoured the formation of porous coatings,which allowed the access of the electrolyte to the substrate leading to their rapid *** the latter,this research endorses the premise that the TEOS-GPTMS hybrid system represents a promising alternative to produce bifunctional barrier-bioactive coatings.

关键词： Magnesium bioactivity coating sol-gel EIS corrosion

Topical ocular administration of DPP-Ⅳ inhibitors:a new approach for treating diabetes-induced retinal neurodegeneration

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neural Regeneration Research 2024年第4期19卷 713-714页

作者： Rafael Simó Cristina hernández Diabetes and Metabolism Research Unit Vall d’Hebron Research Institute(VHIR) Department of Medicine Autonomous University of Barcelona Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas(CIBERDEM) Instituto de Salud CarlosⅢ(ICSⅢ)

Retinal neurodegeneration plays a significant role in the pathogenesis of diabetic retinopathy(DR),the leading cause of preventable *** fact,the American Diabetes Association has defined DR as a highly specific neurovascular complication(Solomon et al.,2017).Therefore,it is no longer acceptable to consider DR as merely a microvascular *** this regard,the term diabetic retinal disease(DRD)has been proposed as a broader term comprising microangiopathy and ***,there are currently no treatments available that directly target the neurodegenerative changes of *** paper will give new insights into the translational research in this field with particular emphasis on glucagon-like peptide 1/dipeptidyl peptidase IV(GLP-1/DPP-IV)inhibitors.

关键词： neurodegeneration ocular insight