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Sex-dependent resilience to extreme drought events: implications for climate change adaptation of a South American endangered tree species

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ecological Processes 2024年第2期13卷 48-60页

作者： sergio Piraino Martín Ariel Hadad Yanina Antonia Ribas-Fernández Fidel Alejandro Roig Laboratorio de Dendrocronología e Historia Ambiental (ianIGLA COnICeT ) Facultad de Ciencias Agrarias Universidad Nacional de Cuyo Laboratorio de Dendrocronología de Zonas áridas (CIGeOBIO COnICeT ) Gabinete de Geología Ambiental (INGEO UNSJ) Hémera Centro de Observación de la Tierra Facultad de Ciencias Universidad Mayor

Background Recent changes in climatic trends are resulting in an increased frequency and intensity of extreme events, with unknown effect on ecosystem dynamics in the near future. extreme drought episodes are recognized as disturbance factors capable of modifying forest dynamics and tree growth. Within this context, dioecious tree species may be impacted by climatic extremes, affecting male/female proportions and, consequently, reproductive processes and species persistence. Therefore, there is an urgent need for species-specific assessments of growth tolerance to extreme dry spells in dioecious tree species, to establish effective conservation strategies for these particular natural resources. Araucaria araucana(araucaria), an endangered dioecious Patagonian tree species, has recently undergone decay and mortality episodes in response to increasing dry climatic conditions. While sex-dependent tolerance to extreme drought episodes has been assessed in the species' humid distribution range, there is still a lack of information on the gender-based resilience of trees growing in the drier environments of the species' *** We reconstructed, through dendrochronological methods, the sex-dependent response of 105 araucaria individuals(55 female and 50 male trees) to five regional extreme dry spells employing a set of different indices. Resistance, recovery period, and average growth reduction of standardized tree-ring growth were examined, analysing the effect of biotic(sex, pre-drought stem tree growth) and abiotic(local climatic conditions before, during, and after extreme climatic episodes) factors on tree *** Sex influences only the species resistance to climatic disturbance, with male individuals showing lower tolerance to extreme drought events. Pre-drought radial growth rates and local meteorological conditions preceding, during, and following extreme dry spells strongly modulated araucaria radial growth resilience regardless of tree s

关键词： Araucaria Climate change Dendrochronology extreme drought event Resilience

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Physico-chemical characterization of acid base disorders in patients with COVID-19:A cohort study

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World Journal of nephrology 2024年第2期13卷 16-23页

作者： sergio Pinto de Souza Juliana R Caldas Marcelo Barreto Lopes Marcelo Augusto Duarte Silveira Fernanda Oliveira Coelho Igor Oliveira Queiroz Pedro Domingues Cury Rogério da Hora Passos Department of nephrology Hospital São RafaelSalvadorBA 41253190Brazil Department of nephrology D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Faculty of Medicine Escola Bahiana de Medicina e Saúde Pública-EBMSPSalvadorBA 40290000Brazil Department of Intensive Care D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Hospital São Rafael D’Or Institute for Research and Education(IDOR)SalvadorBA 41253190Brazil Department of Intensive Care Unit Hospital Israelita Albert EinsteinSao PauloSP 05652900Brazil

BACKGROUnD Acid-base imbalance has been poorly described in patients with coronavirus disease 2019(COVID-19).Study by the quantitative acid-base approach may be able to account for minor changes in ion distribution that may have been over-looked using traditional acid-base analysis *** a cohort of critically ill COVID-19 patients,we looked for an association between metabolic acidosis surrogates and worse clinical outcomes,such as mortality,renal dialysis,and length of hospital *** To describe the acid-base disorders of critically ill COVID-19 patients using Stewart’s approach,associating its variables with poor *** This study pertained to a retrospective cohort comprised of adult patients who experienced an intensive care unit stay exceeding 4 days and who were diagnosed with severe acute respiratory syndrome coronavirus 2 infection through a positive polymerase chain reaction analysis of a nasal swab and typical pulmonary involvement observed in chest computed tomography *** and clinical data were obtained from electronic *** variables were compared using Fisher’s exact *** data were presented as median and interquartile *** Mann-Whitney U test was used for *** In total,211 patients were *** mortality rate was 13.7%.Overall,149 patients(70.6%)presented with alkalosis,28 patients(13.3%)had acidosis,and the remaining 34 patients(16.2%)had a normal arterial pondus *** those presenting with acidosis,most had a low apparent strong ion difference(SID)(20 patients,9.5%).Within the group with alkalosis,128 patients(61.0%)had respiratory *** non-survivors were older,had more comorbidities,and had higher Charlson’s and simplified acute physiology score *** did not find severe acid-base imbalance in this *** analyzed Stewart’s variables(effective SID,apparent SID,and strong ion gap and the effect of albumin,lactate,phosphorus,and chloride)were not d

关键词： COVID-19 Physicochemical approach Acid-base status Critically ill patients Acute respiratory syndrome

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A new approach to pedestal differentiation for soil loss estimation-a case study from a burnt area in north-central Portugal

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Journal of Forestry Research 2024年第3期35卷 45-54页

作者： Frank G.A.Verheijen Martinho A.S.Martins sergio A.Prats Jan J.Keizer Centre for environmental and Marine Studies(CeSAM) Department Environment and PlanningUniversity of Aveiro3810-193 AveiroPortugal Mediterranean Institute for Agriculture Environment and Development(MED-CHANGE)Institute for Advanced Studies and ResearchUniversity of EvoraPolo da MitraAp.947006-554 EvoraPortugal GeoBiociencias Geotecnologias E Geoengenharias(GEOBIOTEC)Department Environment and PlanningUniversity of Aveiro3810-193 AveiroPortugal

Soil pedestals have long been used as qualitative indicators of soil splash *** rangelands,plant-capped pedestals,generally grass tussocks,have also been used to quantitatively estimate soil loss since the first half of the twentieth *** agricultural lands,forests,and bad-lands,stone-capped pedestals have been used as qualitative and semi-quantitative indicators of active,'extreme'*** work has been reported on using capstone pedestal data for quantifying soil *** postulate that three distinct capstone pedestal types may be present in any given location and that a detailed analysis of a pedestal height histogram may be used to recognize their *** analysis can subsequently inform if soil loss can be reliably estimated and if so,which of the existing methods using pedestal height data will provide more accurate *** three proposed capstone pedestal types are:(1)neo-pedestals formed underneath surface stones exposed by(partial)removal of the soil surface cover;(2)endo-pedestals formed underneath stones that were buried in the soil but have been exposed by erosion;and(3)phoenix-pedestals formed underneath stones from collapsed *** the pedestal height histogram of any given location,a skew to smaller heights may indicate the existence of endo-and/or phoenix-pedestals,which may be revealed as a bi-(or tri)modal distribution when using a smaller bin *** concept was applied to a case study where soil loss had been monitored for control plots and mulched plots during a 5-year period following wildfire in a eucalypt *** measured pedestal heights and used methods to quantitatively assess soil loss from soil pedestal data in the available *** pedestal data at the end of the 5-year period under or overestimated soil loss in the control treatment,with results ranging from 60 to 115%of measured soil loss,depending on the *** is postulated that phoenix-and endo-pedestals may be a driving fact

关键词： Soil pedestals Mulch Wildfire Soil erosion Char

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DnA metabarcoding reveals seasonal changes in diet composition across four arthropod-eating lizard species(Phrynosomatidae:Sceloporus)

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Integrative Zoology 2024年第3期19卷 480-495页

作者： Mauricio heRnÁndez Stephanie heReIRA-PACheCO Antton ALBeRDI Aníbal H.DÍAZ De LA VeGA-PÉReZ Arturo eSTRAda-TORReS sergio AnCOnA Yendi e.nAVARRO-nOYA Doctorado en Ciencias Biológicas Centro Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico estación Científica La Malinche Centro Tlaxcala de Biología de la ConductaUniversidad Autónoma de TlaxcalaTlaxcalaMexico Center for evolutionary Hologenomics The Globe InstituteUniversity of CopenhagenCopenhagenDenmark Consejo nacional de Ciencia y Tecnología-Centro Tlaxcala de Biología de la Conducta Universidad Autónoma de TlaxcalaTlaxcalaMexico Departamento de ecología evolutiva Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoMexico CityMexico Laboratorio de Interacciones Bióticas Centro de Investigación en Ciencias BiológicasUniversidad Autónoma de TlaxcalaSan Felipe IxtacuixtlaTlaxcalaMexico

Diet composition and its ecological drivers are rarely investigated in coexisting closely related *** used a molecular approach to characterize the seasonal variation in diet composition in four spiny lizard species inhabiting a mountainous *** metabarcoding revealed that the lizards Sceloporus aeneus,***,***,and *** mostly consumed arthropods of the orders hemiptera,Araneae,Hymenoptera,and *** terrestrial lizards *** and *** mostly predated ants and spiders,whereas the arboreal–saxicolous *** and saxicolous *** largely consumed grasshoppers and *** taxonomic and phylogenetic diversity of the prey was higher during the dry season than the rainy season,likely because reduced prey availability in the dry season forced lizards to diversify their diets to meet their nutritional *** and phylogenetic composition varied seasonally depending on the species,but only dietary composition varied with *** dietary turnover was greater in *** than in ***,suggesting site-specific seasonal variability in prey availability;no other differences among species were ***,which lives at the highest altitude in our study site,displayed interseasonal variation in diet *** differences were correlated with the species’feeding strategies and elevational distribution,which likely contributed to the coexistence of these lizard species in the studied geographic area and beyond.

关键词： arthropod-eating lizards diet breadth environmental barcoding mountainous ecosystem seasonal dietary shifts

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Safety of intravitreal quinupristin/dalfopristin in an animal model

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International Journal of Ophthalmology(english edition) 2016年第3期9卷 373-378页

作者： Veronica e.Giordano sergio e.herna.dez-da.mota.ta.ia.n.a.da.a.he-guel Armando Castillejos-Cheve Sonia Corredor-Casas Samantha M.Salinas-Longoria Rafael Romero-Vera Juan M.Jimenez-Sierra Jose L.Guerrero-naranjo Virgilio Morales-Canton Department of Ophthalmology Retina and Vitreous Service Asociacion para Evitar la Ceguera en Mexico Vicente Garcia Torres 46 Coyoacan Barrio San Lucas Mexico City 04030 Mexico Ophthalmology Service Clinica David Boulevard Garcia de Leon 598 Nueva Chapultepec Morelia Michoacan 58280Mexico Department of Ophthalmology Glaucoma Service Asociacion para Evitar la Ceguera en Mexico Vicente Garcia Torres 46 Coyoacan Barrio San Lucas Mexico City 04030 Mexico Department of Ophthalmology Pathology Service Asociacion para Evitar la Ceguera en Mexico Vicente Garcia Tortes 46 Coyoacan Barrio San Lucas Mexico City 04030 Mexico

AIM： To determine whether different intravitreal doses of quinupristin/dalfopristin lead to electroretinographic or histological changes in the rabbit retina over one month period after injection. MeTHODS： eighteen new Zealand white rabbits were divided into three treatment groups （groups 1 to 3） and different intravitreal doses of quinupristin/dalfopristin were tested in each group. The right eye was injected with the drug and the left eye received intravitreal injection of 5% dextrose water and served as control eye. The doses delivered to each group were 0.1 mg/0.1 mL, 1 mg/0.1 mL and 10 mg/0.1 mL. Simultaneous, bilateral, dark-adapted electroretinography and clinical images of both eyes were obtained in all groups before injection （baseline） and after 7, 14, 21 and 28d, followed by enucleation for histological examination. ReSULTS： Subjects in the group 1 showed no signs of toxicity in the electroretinogram when compared with groups 2 and 3 （Kruskall-Wallis test, P=0.000）. By day 7, no electrical response to light stimuli was recorded in the treated eyes in groups 2 and 3, consistent with severe damage due to retinal toxicity. Light microscopy revealedno significant histopathological changes in the group 1, while rabbits in groups 2 and 3 had signs of granulomatous inflammation in most cases. COnCLUSIOn： Intravitreal 0.1 mg/0.1 mL doses of quinupristin/dalfopristin do not lead to electroretinographic or histological signs of retinal toxicity compared with 1 mg/0.1 mL and 10 mg/O.1 mL in this rabbit model.

关键词： endophthalmitis quinupristin/dalfopristin retinal toxicity

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Recent progress in conical shock wave/boundary layer interaction with spanwise pressure gradient

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Propulsion and Power Research 2024年第3期13卷 295-318页

作者： Feng-Yuan Zuo sergio Pirozzoli State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi’an Jiaotong UniversityXi’an 710049China Dipartimento di Ingegneria Meccanica e Aerospaziale Sapienza Universitàdi RomaVia Eudossiana 18Roma 00184Italy

A common denominator between conical-symmetry and conical shock interaction is the spanwise pressure gradient,which perform more non-uniformity and its interactionflow is more complicated than the spanwise-homogeneous planar shock *** advances in conical-symmetry and conical shock interactions with turbulent boundary layer are reviewed in specific areas:(i)quasi-conical swept interactions due to compression ramps and sharpfins,(ii)impinging conical shock wave with interactions of plate wall,(iii)laminar double cone in-teractions with consideration of real-gas *** success has been achieved in describing the phenomena of the time averaged and instantaneousflow features and the low-frequency unsteadiness,including correlations and coherent structures in the separation bubble,through complementary experimental and numerical studies of swept shock *** available observations are here scrutinized to infer underlying mechanisms of interactions in conicalflow,and provide theoretical foundation and hints forfluidic control ***-parison with high-fidelity direct numerical simulations is used to quantified the uncertainty of RAnS turbulence models in complex *** heat transfer,extensive studies of hypersonicflow over double cone geometries have shown that those can be predicted with reasonable accuracy,even in the presence of high-temperature effects.

关键词： Conical shock Boundary layer Separatedflows Unsteadiness Viscous-inviscid interactions

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Linking leaf elemental traits to biomass across forest biomes in the Himalayas

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Science China earth Sciences 2024年第5期67卷 1518-1528页

作者： nita DYOLA eryuan LianG Josep PeÑUeLAS J.Julio CAMAReRO Shalik Ram SIGDeL Sugam ARYAL Wentao LIn Xiang LIU Yongwen LIU Xingliang XU sergio ROSSI State Key Laboratory of Tibetan Plateau earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Laboratoire sur lesécosystèmes terrestres boréaux Département des Sciences FondamentalesUniversitédu QuébecàChicoutimi555Boulevard de l′UniversitéChicoutimi(QC)G7H2B1Canada CSIC Global Ecology Unit CREAF-CSIC-UABBellaterraE-08193 CataloniaSpain CReAF Cerdanyola del VallèsE-08193 CataloniaSpain Instituto Pirenaico de ecología(IPe-CSIC) Avenida Montañana 1005Zaragoza 50059Spain Friedrich-Alexander-Universität erlangen-nürnberg Institut für GeographieErlangen 91058Germany State Key Laboratory of Grassland Agro-ecosystems College of EcologyLanzhou UniversityLanzhou 730000China Key Laboratory of ecosystem network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China

Plants require a number of essential elements in different proportions for ensuring their growth and *** elemental concentrations in leaves reflect the functions and adaptations of plants under specific environmental ***,less is known about how the spectrum of leaf elements associated with resource acquisition,photosynthesis and growth regulates forest biomass along broad elevational *** examined the influence of leaf element distribution and diversity on forest biomass by analyzing ten elements(C,n,P,K,Ca,Mg,Zn,Fe,Cu,and Mn)in tree communities situated every 100 meters along an extensive elevation gradient,ranging from the tropical forest(80 meters above sea level)to the alpine treeline(4200 meters above sea level)in the Kangchenjunga Landscape in eastern nepal *** calculated communityweighted averages(reflecting dominant traits governing biomass,i.e.,mass-ratio effect)and functional divergence(reflecting increased trait variety,i.e.,complementarity effect)for leaf elements in a total of 1,859 trees representing 116 *** increasing mass-ratio effect and decreasing complementarity in leaf elements enhance forest biomass accumulation.A combination of elements together with elevation explains biomass(52.2%of the variance)better than individual elemental trait diversity(0.05%to 21%of the variance).elevation modulates trait diversity among plant species in biomass *** promotes biomass at lower elevations,but reduces biomass at higher elevations,demonstrating an interaction between elevation and *** interaction between elevation and mass-ratio effect produces heterogeneous effects on biomass along the elevation *** research indicates that biomass accumulation can be disproportionately affected by elevation due to interactions among trait diversities across vegetation *** higher trait variation enhances the adaptation of species to environmental changes,it reduces

关键词： ecosystem function elevational gradient Functional diversity Functional traits Leaf elements niche complementarity

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Impact of payment source, referral site, and place of residence on outcomes after allogeneic transplantation in Mexico

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World Journal of Transplantation 2024年第2期14卷 76-87页

作者： Andrés Gómez-De León Yesica A López-Mora Valeria García-Zárate Ana Varela-Constantino sergio U Villegas-De Leon Xitlaly J González-Leal Raúl del Toro-Mijares Anna C Rodríguez-Zúñiga Juan F Barrios-Ruiz Victor Mingura-Ledezma Perla R Colunga-Pedraza Olga G Cantú-Rodríguez César H Gutiérrez-Aguirre Luz tarín-Arzaga elías e González-López david Gómez-Almaguer hematology Service Universidad Autónoma de Nuevo LeónFacultad de Medicina y Hospital Universitario Dr.JoséEleuterio GonzálezMonterrey 64460Nuevo LeónMexico hemato-logy Service Clínica Gómez AlmaguerMonterrey 64710Nuevo LeónMexico hematology Service Instituto Tecnológico de Estudios Superiores de MonterreyTec SaludEscuela de Medicina Ignacio SantosMonterrey 64710Nuevo LeónMexico

BACKGROUnD The impact of social determinants of health in allogeneic transplant recipients in low-and middle-income countries is poorly *** observational study analyzes the impact of place of residence,referring institution,and transplant cost coverage(out-of-pocket vs government-funded vs private insurance)on outcomes after allogeneic hematopoietic stem cell transplantation(alloHSCT)in two of Mexico's largest public and private *** To evaluate the impact of social determinants of health and their relationship with outcomes among allogeneic transplant recipients in *** In this retrospective cohort study,we included adolescents and adults≥16 years who received a matched sibling or haploidentical transplant from *** were selected without regard to their diagnosis and were sourced from both a private clinic and a public University Hospital in *** payment groups were compared:Out-of-pocket(OOP),private insurance,and a federal Universal healthcare program“Seguro Popular”.Outcomes were compared between referred and institution-diagnosed patients,and between residents of nuevo Leon and *** outcomes included overall survival(OS),categorized by residence,referral,and payment *** outcomes encompassed early mortality,event-free-survival,graft-versus-host-relapse-free survival,and non-relapse-mortality(nRM).Statistical analyses employed appropriate tests,Kaplan-Meier method,and Cox proportional hazard regression *** software included SPSS and R with tidycmprsk *** Our primary outcome was overall *** included 287 patients,n=164 who lived out of state(57.1%),and n=129 referred from another institution(44.9%).The most frequent payment source was OOP(n=139,48.4%),followed by private insurance(n=75,26.1%)and universal coverage(n=73,25.4%).no differences in OS,event-free-survival,nRM,or graft-versus-host-relapse-free survival were observed for patients dia

关键词： hematopoietic cell transplant Social determinants of health Geography Haploidentical Out-of-pocket Financial toxicity Survival health services and outcomes hematopoietic malignancy Aplastic anemia

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Historic accounts of Mansonella parasitaemias in the South Pacific and their relevance to lymphatic filariasis elimination efforts today

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Asian Pacific Journal of Tropical Medicine 2016年第3期9卷 201-207页

作者： J.Lee Crainey Tullio Romao Ribeiro da Silva sergio Luiz Bessa Luz ecologia de Doencas Transmissiveis na Amazonia Instituto Leonidas e Maria Deane-Fiocruz Amazonia Rua Terezina

There are two species of filarial parasites with sheathless microfilariae known to commonly cause parasitaemias in humans:Mansonella perstans and Mtinsonella *** most contemporary accounts of the distribution of these parasites,neither is usually considered to occur anywhere in the eastern ***,Sir Patrick Manson,who first described both parasite species,recorded the existence of sheathless sharp-tailed Mansonella ozzardilike parasites occurring in the blood of natives from new Guinea in each and every version of his manual for tropical disease that he wrote before his death in ***'s reports were based on his own identifications and were made from at least two independent blood sample collections that were taken from the *** region Mansonella perstans parasitaemias were also later(in 1923) reported to occur in new Guinea and once before this(in 1905) in *** Mansonella-parasilaernias are generally regarded as benign,they are thought to be of public health importance because they can affect the epidemiological monitoring of other filarial *** this article,we reviewed the historic literature concerning Pacific-origin Mansonella-parasitaemias in an attempt to explain how,despite repeated reports of Pacificregion Mansonella-parasilaemias,by as early as the 1970 s,the WHO had arrived at the presentday view that Wuchereria bancrofti is the only cause of filarial parasitaemias in Papua new *** have also evaluated the evidence supporting the contemporary existence of Pacificarea parasitaemia-causing Mansonella parasites and assessed the relevance such parasites could have for present-day lymphatic filariasis elimination efforts in the region.

关键词： Mansonella ozzardi Mansonella perstans Wuchereria bancrofti Papua new Guinea Lymphatic filariasis Global Programme to eliminate Lymphatic Filariasis

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effect of Mushroom extract hericium erinaceus on Spatial Memory and Morphology of neurons in the CA1 and CA3 Regions of the Hippocampus in Ovariectomized Rats

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Open Journal of Veterinary Medicine 2024年第7期14卷 163-179页

作者： Lucia Garcia-Delgado Mariana Monserrath Verdía-Venegas Jacinto Bañuelos-Pineda esther Albarrán-Rodríguez Guillermo nolasco-Rodriguez José Ricardo Cuellar-Pérez sergio Fausto-Guerra Manuel Rosales-Cortés Master in Behavioral Sciences Institute of Neurosciences University of Guadalajara Zapopan Mexico Department of Veterinary Medicine Division of Veterinary Sciences CUCBA University of Guadalajara Zapopan Mexico Botany and Zoology Laboratory CUCBA University of Guadalajara Zapopan Mexico

Various studies indicate that low levels of estradiol negatively impact cognitive abilities. extracts from the fungus hericium erinaceus (he) contain bioactive components that promote the proper functioning of the nervous system and potential effects on protection against neurodegenerative diseases, including dementia and motor dysfunctions. The objective was to evaluate the effects of the administration of the he mushroom extract on visuospatial memory and morphology of neurons in the CA1 and CA3 regions of the hippocampus in ovariectomized rats. 40 young Wistar rats weighing 90 ± 10 g BW were used, which were distributed into four groups of 10 animals;Control Group, non-ovariectomized and untreated rats;Group e2, ovariectomized rats treated with estradiol (2 μg/kg/body weight);Group he, ovariectomized rats treated with the extract of the fungus hericium erinaceus (0.5 mg/kg body weight) and Group Ovx/ST, ovariectomized rats, without treatment. The animals were tested in the Barnes and Open Field maze, then they were sacrificed, and their brains were obtained to perform a histological analysis of neuronal morphology in the CA1 and CA3 areas of the hippocampus. The most outstanding results showed that the Ovx/ST group recorded the longest time to arrive at the escape box and stay in the Barnes maze. A correlation was observed between neuronal damage and function;in the groups that did not present satisfactory performance in the maze tests, morphological alterations were identified such as the presence of some neuronal somata with degeneration characteristics such as pyknosis, nuclear basophilia and shrinkage of the cells. Its soma, as well as a decrease in the nuclear area of CA1 and CA3 neurons. It is concluded that the fungus hericium erinaceus exerted a neuroprotective effect on the neuronal bodies of the hippocampus, associated with better performance in the visuospatial recognition memory test.

关键词： Ovariectomized Rats Ovarian Hypofunction estradiol hericium erinaceus Barnes Circular Labyrinth Open Field Labyrinth

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