Structural Health Monitoring(SHM)plays a critical role in ensuring the safety,integrity,longevity and economic efficiency of civil infrastructures.The field has undergone a profound transformation over the last few de...Structural Health Monitoring(SHM)plays a critical role in ensuring the safety,integrity,longevity and economic efficiency of civil infrastructures.The field has undergone a profound transformation over the last few decades,evolving from traditional methods—often reliant on visual inspections—to data-driven intelligent systems.This review paper analyzes this historical trajectory,beginning with the approaches that relied on modal parameters as primary damage indicators.The advent of advanced sensor technologies and increased computational power brings a significant change,making Machine Learning(ML)a viable and powerful tool for damage assessment.More recently,Deep Learning(DL)has emerged as a paradigm shift,allowing for more automated processing of large data sets(such as the structural vibration signals and other types of sensors)with excellent performance and accuracy,often surpassing previous methods.This paper systematically reviews these technological milestones—from traditional vibration-based methods to the current state-of-the-art in deep learning.Finally,it critically examines emerging trends—such as Digital Twins and Transformer-based architectures—and discusses future research directions that will shape the next generation of SHM systems for civil engineering.展开更多
BCL2-associated anthanogene 3 facilitates the clearance of tau protein aggregates:BCL2-associated anthanogene 3(BAG3)is a ubiquitously expressed and highly conserved multi-functional co-chaperone protein involved in m...BCL2-associated anthanogene 3 facilitates the clearance of tau protein aggregates:BCL2-associated anthanogene 3(BAG3)is a ubiquitously expressed and highly conserved multi-functional co-chaperone protein involved in many biological processes that supports cellular homeostasis,including the inhibition of apoptosis by preventing mitochondrial BAX localization(Lin et al.,2022)and the promotion of the degradation of hyperphosphorylated tau aggregates by its interactions with SQSTM1(p62)(Hamano and Mutoh,2022).展开更多
Neuroinflammation is a crucial factor in the progression of various diseases,ranging from immune-related conditions such as sepsis to neurodegenerative disorders such as Alzheimer’s disease(AD)(Ravichandran and Henek...Neuroinflammation is a crucial factor in the progression of various diseases,ranging from immune-related conditions such as sepsis to neurodegenerative disorders such as Alzheimer’s disease(AD)(Ravichandran and Heneka,2024).This perspective article,which draws on insights from diverse fields including neuroscience,immunology,and pathology,p rovides a critical analysis of ongoing research efforts in inflammasome biology,with specific emphasis on Nod-like receptor(NLR)and pyrin domain-containing protein 3(NLRP3).展开更多
Adult neurogenesis continuously produces new neurons critical for cognitive plasticity in adult rodents.While it is known transforming growth factor-βsignaling is important in embryonic neurogenesis,its role in postn...Adult neurogenesis continuously produces new neurons critical for cognitive plasticity in adult rodents.While it is known transforming growth factor-βsignaling is important in embryonic neurogenesis,its role in postnatal neurogenesis remains unclear.In this study,to define the precise role of transforming growth factor-βsignaling in postnatal neurogenesis at distinct stages of the neurogenic cascade both in vitro and in vivo,we developed two novel inducible and cell type-specific mouse models to specifically silence transforming growth factor-βsignaling in neural stem cells in(mGFAPcre-ALK5fl/fl-Ai9)or immature neuroblasts in(DCXcreERT2-ALK5fl/fl-Ai9).Our data showed that exogenous transforming growth factor-βtreatment led to inhibition of the proliferation of primary neural stem cells while stimulating their migration.These effects were abolished in activin-like kinase 5(ALK5)knockout primary neural stem cells.Consistent with this,inhibition of transforming growth factor-βsignaling with SB-431542 in wild-type neural stem cells stimulated proliferation while inhibited the migration of neural stem cells.Interestingly,deletion of transforming growth factor-βreceptor in neural stem cells in vivo inhibited the migration of postnatal born neurons in mGFAPcre-ALK5fl/fl-Ai9 mice,while abolishment of transforming growth factor-βsignaling in immature neuroblasts in DCXcreERT2-ALK5fl/fl-Ai9 mice did not affect the migration of these cells in the hippocampus.In summary,our data supports a dual role of transforming growth factor-βsignaling in the proliferation and migration of neural stem cells in vitro.Moreover,our data provides novel insights on cell type-specific-dependent requirements of transforming growth factor-βsignaling on neural stem cell proliferation and migration in vivo.展开更多
The development of sustainable materials has encouraged the use of biopolymers as alternatives to synthetic polymers.Polymeric films have stood out for their high potential in environmentally sustainable applications....The development of sustainable materials has encouraged the use of biopolymers as alternatives to synthetic polymers.Polymeric films have stood out for their high potential in environmentally sustainable applications.Conventional cellulose acetate(CA)-based films are attractive due to their biodegradability and film-forming ability.However,their functional performance often requires enhancement through the incorporation of additives.In this context,two bio-based additives were investigated:condensed tannin(0%,5%and 10%wt.),a natural polyphenol known for its antioxidant and antimicrobial properties,and nanocrystalline cellulose(CNC)(0%,0.5%and 1%wt.),which act as reinforcing agents to improve mechanical strength and barrier properties.The results showed that tannin generally enhanced mechanical strength and surface uniformity while imparting contact-based antimicrobial activity.CNC reduced water uptake and improved thermal stability,but when used alone,it tended to lower mechanical performance and increase surface roughness.The combination of CNC and tannin produced performance shifts that depended strongly on their relative concentrations,with no consistent synergistic effect across all properties.In certain balanced ratios,CNC benefited fromtannin’smatrix-stabilizing effect,leading to improved strength or reduced moisture absorption.Antimicrobial activity in acetic acid–based films was linked to residual acidity,whereas in acetonebased films,tannin alone was responsible for the antimicrobial effect by contact.These findings highlight that the physicochemical,mechanical,and functional performance of CA films(CAFs)is governed not only by additive type but also by the precise interplay between CNC and tannin,underscoring the need for formulation strategies tailored to the requirements of specific applications.展开更多
Neurodegenerative diseases affect millions of people worldwide,with Alzheimer’s disease(AD)being the leading cause of dementia.It is estimated that more than 50 million people live with this condition,which is expect...Neurodegenerative diseases affect millions of people worldwide,with Alzheimer’s disease(AD)being the leading cause of dementia.It is estimated that more than 50 million people live with this condition,which is expected to triple by 2050,driven mainly by the aging of the global population(GBD 2019 Dementia Forecasting Collaborators,2022).展开更多
Spinal cord injury results in permanent loss of neurological functions due to severance of neural networks.Transplantation of neural stem cells holds promise to repair disrupted connections.Yet,ensuring the survival a...Spinal cord injury results in permanent loss of neurological functions due to severance of neural networks.Transplantation of neural stem cells holds promise to repair disrupted connections.Yet,ensuring the survival and integration of neural stem cells into the host neural circuit remains a formidable challenge.Here,we investigated whether modifying the intrinsic properties of neural stem cells could enhance their integration post-transplantation.We focused on phosphatase and tensin homolog(PTEN),a well-characterized tumor suppressor known to critically regulate neuronal survival and axonal regeneration.By deleting Pten in mouse neural stem cells,we observed increased neurite outgrowth and enhanced resistance to neurotoxic environments in culture.Upon transplantation into injured spinal cords,Pten-deficient neural stem cells exhibited higher survival and more extensive rostrocaudal distribution.To examine the potential influence of partial PTEN suppression,rat neural stem cells were treated with short hairpin RNA targeting PTEN,and the PTEN knockdown resulted in significant improvements in neurite growth,survival,and neurosphere motility in vitro.Transplantation of sh PTEN-treated neural stem cells into the injured spinal cord also led to an increase in graft survival and migration to an extent similar to that of complete deletion.Moreover,PTEN suppression facilitated neurite elongation from NSC-derived neurons migrating from the lesion epicenter.These findings suggest that modifying intrinsic signaling pathways,such as PTEN,within neural stem cells could bolster their therapeutic efficacy,offering potential avenues for future regenerative strategies for spinal cord injury.展开更多
Wearable sensors integrated with deep learning techniques have the potential to revolutionize seamless human-machine interfaces for real-time health monitoring,clinical diagnosis,and robotic applications.Nevertheless,...Wearable sensors integrated with deep learning techniques have the potential to revolutionize seamless human-machine interfaces for real-time health monitoring,clinical diagnosis,and robotic applications.Nevertheless,it remains a critical challenge to simultaneously achieve desirable mechanical and electrical performance along with biocompatibility,adhesion,self-healing,and environmental robustness with excellent sensing metrics.Herein,we report a multifunctional,anti-freezing,selfadhesive,and self-healable organogel pressure sensor composed of cobalt nanoparticle encapsulated nitrogen-doped carbon nanotubes(CoN CNT)embedded in a polyvinyl alcohol-gelatin(PVA/GLE)matrix.Fabricated using a binary solvent system of water and ethylene glycol(EG),the CoN CNT/PVA/GLE organogel exhibits excellent flexibility,biocompatibility,and temperature tolerance with remarkable environmental stability.Electrochemical impedance spectroscopy confirms near-stable performance across a broad humidity range(40%-95%RH).Freeze-tolerant conductivity under sub-zero conditions(-20℃)is attributed to the synergistic role of CoN CNT and EG,preserving mobility and network integrity.The Co N CNT/PVA/GLE organogel sensor exhibits high sensitivity of 5.75 k Pa^(-1)in the detection range from 0 to 20 k Pa,ideal for subtle biomechanical motion detection.A smart human-machine interface for English letter recognition using deep learning achieved 98%accuracy.The organogel sensor utility was extended to detect human gestures like finger bending,wrist motion,and throat vibration during speech.展开更多
The regenerative capacity of peripheral nerve is significantly different from injury responses in the central nervous system.Regeneration of injured axons,re-myelination and functional recovery are readily observed af...The regenerative capacity of peripheral nerve is significantly different from injury responses in the central nervous system.Regeneration of injured axons,re-myelination and functional recovery are readily observed after injury to peripheral nerve.展开更多
Buildings represent a significant share of the world’s energy consumption,and the sector has drawn the attention of governments,which have adopted policies to reduce energy expenditure.The Certifications of Energy Ef...Buildings represent a significant share of the world’s energy consumption,and the sector has drawn the attention of governments,which have adopted policies to reduce energy expenditure.The Certifications of Energy Efficiency in Buildings stand out as one possible solution to achieve this goal,employed in several countries worldwide.The European Union presents advanced energy assessment programs for buildings,being a reference and model for several other regulations in the world.The Energy Certification System for Buildings(SCE)of Portugal is considered a success case,reflected in the significant number of energy certificates issued.The Brazilian Labeling Program for Building(PBE Edifica),first launched in 2009,does not find a broad application today in the Brazilian scenario.This work shows a synthesis of the European Energy Performance of Buildings Directive(EPBD)and the Brazilian and Portuguese regulations’history.A qualitative comparison is made between the SCE and the PBE Edifica to verify a European and a developing country’s regulations with a certain degree of cultural and climatic similarities.Through this comparison,proposals are made for improvements to Brazilian certification,seeking to improve its energy planning and energy policy concerning its building stock.The suggestions for improvement presented may also be appropriate for other developing countries that have started and have not yet successfully implemented their energy certification programs in buildings.展开更多
Food restriction is a strategy to improve the productive efficiency of some aquatic organisms.It is expected with the implementation of food restriction programs to first reduce the feed consumption by the cultivated ...Food restriction is a strategy to improve the productive efficiency of some aquatic organisms.It is expected with the implementation of food restriction programs to first reduce the feed consumption by the cultivated species and consequently reduce the waste load in the water.In addition,there is a lower employment of labor during periods of food restriction.However,the efficiency of the feed restriction and the compensatory gain of weight by the organisms cultivated will depend on the adaptation and the characteristics of the species in question.Several methodologies have tested forms of food restriction applied to fish farming.Some of them are addressed in this review,as well as results and comparisons made with several authors on the subject in question.The purpose of this paper was to describe the main reasons for using food restriction,its implications on fish organism and to compare results from previous studies.展开更多
This study aimed to evaluate the efficacy of an individualized remote exercise program on the improvement of body composition and physical fitness of a heterogeneous group of patients who completed breast cancer treat...This study aimed to evaluate the efficacy of an individualized remote exercise program on the improvement of body composition and physical fitness of a heterogeneous group of patients who completed breast cancer treatment.This prospective study included 107 women aged 18 to 60,shortly after curative treatment for localized breast cancer,at the Erasto Gaertner Cancer Hospital(HEG)in Curitiba,PR,Brazil.Body composition,maximal oxygen consumption,and muscle resistance were evaluated after nine months of intervention while considering adherence to the program,level of physical activity,presence of binge eating disorder,tumor classification,and treatment type.Seventy-eight women(72.8%)adhered to the training program.Adherent participants showed significant changes in body mass([-4.3±3.6]kg;p<0.0001),body mass index([-1.6±1.5]kg·m^(−2);p<0.0001),body fat(−3.4%±3.1%;p<0.0001),maximal oxygen consumption([7.5±2.0]ml·kg^(−1)·min^(−1));p<0.0001),and abdominal resistance([11.2±2.8]reps;p<0.0001).In contrast,these variables did not change significantly in the non-adherent group.Among the adherent participants,those subclassified in the severe binge group showed a more noticeable reduction in body mass,body mass index,and body fat(p<0.05)than those in the non-binge group.Individualized remotely-guided physical exercise programs can improve the body composition and physical fitness of women undergoing post-breast cancer surveillance,regardless of pathological history or treatment.展开更多
Introduction: Child obesity has important consequences on the child’s health and is related to the risk of developing chronic diseases. That brings up the need for research assessing the impact of obesity-and overwei...Introduction: Child obesity has important consequences on the child’s health and is related to the risk of developing chronic diseases. That brings up the need for research assessing the impact of obesity-and overweight-reduction programs with close attention to methodology aspects and precise indicators of the impact of such programs. Goal: Assessing the impact of a physical activity program on the plasma concentrations of adiponectin, leptin, and ghrelin in overweight and obese schoolchildren. Methods: Randomized controlled trial, double-blind, with 6-to 9-year-old overweight and obese school-children. A sample of 79 schoolchildren randomly distributed into control and intervention groups was subjected to a physical activity program. The levels of adiponectin, leptin, ghrelin, body mass index, body fat percentage, anthropometry, lipid profile and glycemia were evaluated. The program’s impact was assessed through multivariate linear regression models. Result: When comparing the groups, a significant difference was found for adiponectin, which shows an increase in the proportion of subjects with higher adiponectin concentrations for the intervention group and a reduction in body mass index and body fat percentage. Conclusion: The impact of the intervention program was positive in increasing adiponectin levels associated with a reduction in body mass index and body fat percentage.展开更多
Hippocampal neuronal loss causes cognitive dysfunction in Alzheimer’s disease.Adult hippocampal neurogenesis is reduced in patients with Alzheimer’s disease.Exercise stimulates adult hippocampal neurogenesis in rode...Hippocampal neuronal loss causes cognitive dysfunction in Alzheimer’s disease.Adult hippocampal neurogenesis is reduced in patients with Alzheimer’s disease.Exercise stimulates adult hippocampal neurogenesis in rodents and improves memory and slows cognitive decline in patients with Alzheimer’s disease.However,the molecular pathways for exercise-induced adult hippocampal neurogenesis and improved cognition in Alzheimer’s disease are poorly understood.Recently,regulator of G protein signaling 6(RGS6)was identified as the mediator of voluntary running-induced adult hippocampal neurogenesis in mice.Here,we generated novel RGS6fl/fl;APP_(SWE) mice and used retroviral approaches to examine the impact of RGS6 deletion from dentate gyrus neuronal progenitor cells on voluntary running-induced adult hippocampal neurogenesis and cognition in an amyloid-based Alzheimer’s disease mouse model.We found that voluntary running in APP_(SWE) mice restored their hippocampal cognitive impairments to that of control mice.This cognitive rescue was abolished by RGS6 deletion in dentate gyrus neuronal progenitor cells,which also abolished running-mediated increases in adult hippocampal neurogenesis.Adult hippocampal neurogenesis was reduced in sedentary APP_(SWE) mice versus control mice,with basal adult hippocampal neurogenesis reduced by RGS6 deletion in dentate gyrus neural precursor cells.RGS6 was expressed in neurons within the dentate gyrus of patients with Alzheimer’s disease with significant loss of these RGS6-expressing neurons.Thus,RGS6 mediated voluntary running-induced rescue of impaired cognition and adult hippocampal neurogenesis in APP_(SWE) mice,identifying RGS6 in dentate gyrus neural precursor cells as a possible therapeutic target in Alzheimer’s disease.展开更多
BACKGROUND Family caregivers of cirrhosis patients(CPs)often experience burden,stress,and depression.Investigating whether these conditions improve following the patient undergoing liver transplantation(LT)is crucial,...BACKGROUND Family caregivers of cirrhosis patients(CPs)often experience burden,stress,and depression.Investigating whether these conditions improve following the patient undergoing liver transplantation(LT)is crucial,as it would elucidate the compre-hensive benefits of the procedure and demonstrate the positive impacts not only on the patients but also on their caregivers and society.AIM To compare the levels of burden,stress and depression among family caregivers of cirrhotic and liver transplant patients.METHODS This cross-sectional observational study evaluated caregivers of CPs and LT recipients at a quaternary Brazilian hospital.Instruments included identification cards,interview scripts,the caregiver burden scale Inventory,Lipp’s Stress Symptom Inventory,and the Beck Depression Inventory-Second Edition.Psychometric analyses involved confirmatory factor analysis and calculation of McDonald’s omega and composite reliability.Factor scores were compared with the Mann-Whitney U test,with effect size as the rank-biserial correlation coefficient(r).Statistical analysis was performed with R software(P<0.05).RESULTS Seventy-seven CP caregivers and 65 LT recipient caregivers were included.Most were female(CP:85.7%vs LT:84.6%)and the patients’spouses(76.6%vs 63.1%).The median age and caregiving duration were 55.4(23.3-76.3)vs 54.6(25.7-82.1)and 3.9(1-20)vs 8(1.5-24)years,respectively(P=0.001).LT caregivers were less likely to be at risk of overload(21.5%vs 49.4%),to be under stress(33.8%vs 36.4%)and to show symptoms of depression(15.4%vs 35.1%).Compared with LT caregivers,CP caregivers had greater median factor scores for burden(general tension,P=0.012;isolation,P=0.014;disappointment,P=0.004),depression(P=0.008),and stress(P=0.047),with small to moderate effect sizes.The disappointment(r=0.240)and depression(r=0.225)dimensions had the largest effect sizes.CONCLUSION Family caregivers of LT recipients are less likely to exhibit symptoms of burden,stress,and depression,suggesting that the benefits of LT extend to the patients’family members.展开更多
Spinal cord injury results in the loss of sensory,motor,and autonomic functions,which almost always produces permanent physical disability.Thus,in the search for more effective treatments than those already applied fo...Spinal cord injury results in the loss of sensory,motor,and autonomic functions,which almost always produces permanent physical disability.Thus,in the search for more effective treatments than those already applied for years,which are not entirely efficient,researches have been able to demonstrate the potential of biological strategies using biomaterials to tissue manufacturing through bioengineering and stem cell therapy as a neuroregenerative approach,seeking to promote neuronal recovery after spinal cord injury.Each of these strategies has been developed and meticulously evaluated in several animal models with the aim of analyzing the potential of interventions for neuronal repair and,consequently,boosting functional recovery.Although the majority of experimental research has been conducted in rodents,there is increasing recognition of the importance,and need,of evaluating the safety and efficacy of these interventions in non-human primates before moving to clinical trials involving therapies potentially promising in humans.This article is a literature review from databases(PubMed,Science Direct,Elsevier,Scielo,Redalyc,Cochrane,and NCBI)from 10 years ago to date,using keywords(spinal cord injury,cell therapy,non-human primates,humans,and bioengineering in spinal cord injury).From 110 retrieved articles,after two selection rounds based on inclusion and exclusion criteria,21 articles were analyzed.Thus,this review arises from the need to recognize the experimental therapeutic advances applied in non-human primates and even humans,aimed at deepening these strategies and identifying the advantages and influence of the results on extrapolation for clinical applicability in humans.展开更多
Stress signaling following axon injury stimulates a transcriptional program for regeneration that might be exploited to promote central nervous system repair.However,this stress response drives neuronal apoptosis in n...Stress signaling following axon injury stimulates a transcriptional program for regeneration that might be exploited to promote central nervous system repair.However,this stress response drives neuronal apoptosis in non-regenerative environments.This duality presents a quandary for the development of therapeutic interventions:manipulating stress signaling to enhance recovery of damaged neurons risks accelerating neurodegeneration or restricting regenerative potential.This dichotomy is well illustrated by the fates of retinal ganglion cells(RGCs)following optic nerve crush.In this central nervous system injury model,disruption of a stress-activated MAP kinase(MAPK)cascade blocks the extensive apoptosis of RGCs that occurs in wild-type mice(Watkins et al.,2013;Welsbie et al.,2017).展开更多
Adult microglia,by continuously sensing changes in their environment and communicating with nearly all brain cell types,are considered to be the immune sentinels of the brain.In the healthy central nervous system(CNS)...Adult microglia,by continuously sensing changes in their environment and communicating with nearly all brain cell types,are considered to be the immune sentinels of the brain.In the healthy central nervous system(CNS),microglia display a unique molecular homeostatic signature(i.e.,Tmem119,P2ry12,Sall1,Siglech,Gpr34,and Hexb)(Figure 1A).展开更多
Traumatic brain injury(TBI)is a public health problem with an undue economic burden that impacts nearly every age,ethnic,and gender group across the globe(Capizzi et al.,2020).TBIs are often sustained during a dynamic...Traumatic brain injury(TBI)is a public health problem with an undue economic burden that impacts nearly every age,ethnic,and gender group across the globe(Capizzi et al.,2020).TBIs are often sustained during a dynamic range of exposures to energetic environmental forces and as such outcomes are typically heterogeneous regarding severity and pathology(Capizzi et al.,2020).展开更多
Premise:The com bined effects of modern healthcare practices which prolong lifespan and declining birthrates have created unprecedented changes in age demographics worldwide that are especially pronounced in Japan,Sou...Premise:The com bined effects of modern healthcare practices which prolong lifespan and declining birthrates have created unprecedented changes in age demographics worldwide that are especially pronounced in Japan,South Korea,Europe,and North America.Since old age is the most significant predictor of dementia,global healthcare systems must rise to the challenge of providing care for those with neurodegenerative disorders.展开更多
基金The authors would like to thank CNPq(Conselho Nacional de Desenvolvimento Científico e Tecnológico)—grants 407256/2022-9,303550/2025-2,402533/2023-2 and 303982/2022-5FAPEMIG(Fundação de AmparoàPesquisa do Estado de Minas Gerais)—grants APQ-00032-24 and APD-01113-25 for their financial support.
文摘Structural Health Monitoring(SHM)plays a critical role in ensuring the safety,integrity,longevity and economic efficiency of civil infrastructures.The field has undergone a profound transformation over the last few decades,evolving from traditional methods—often reliant on visual inspections—to data-driven intelligent systems.This review paper analyzes this historical trajectory,beginning with the approaches that relied on modal parameters as primary damage indicators.The advent of advanced sensor technologies and increased computational power brings a significant change,making Machine Learning(ML)a viable and powerful tool for damage assessment.More recently,Deep Learning(DL)has emerged as a paradigm shift,allowing for more automated processing of large data sets(such as the structural vibration signals and other types of sensors)with excellent performance and accuracy,often surpassing previous methods.This paper systematically reviews these technological milestones—from traditional vibration-based methods to the current state-of-the-art in deep learning.Finally,it critically examines emerging trends—such as Digital Twins and Transformer-based architectures—and discusses future research directions that will shape the next generation of SHM systems for civil engineering.
基金supported by the award W81XWH1910309 (to HF) from the Department of Defensethe award R01-AG075092-01 (to HF)+2 种基金the award RF1AG063521 from the National Institute of Aging at the National Institutes of Healththe Neurological Research Institute Seed grant (to HF) from The Ohio State Universitythe Summer Undergraduate Research Fellowship (to NS) from The Ohio State University Chronic Brain Injury Discovery Theme
文摘BCL2-associated anthanogene 3 facilitates the clearance of tau protein aggregates:BCL2-associated anthanogene 3(BAG3)is a ubiquitously expressed and highly conserved multi-functional co-chaperone protein involved in many biological processes that supports cellular homeostasis,including the inhibition of apoptosis by preventing mitochondrial BAX localization(Lin et al.,2022)and the promotion of the degradation of hyperphosphorylated tau aggregates by its interactions with SQSTM1(p62)(Hamano and Mutoh,2022).
基金supported by Texas Alzheimer’s Research and Care Consortium-TARCC 2022-26,The National Football League Players Association-NFLPA,NIH/NIA Grant 1R01 AG072491 to TB and FDP.
文摘Neuroinflammation is a crucial factor in the progression of various diseases,ranging from immune-related conditions such as sepsis to neurodegenerative disorders such as Alzheimer’s disease(AD)(Ravichandran and Heneka,2024).This perspective article,which draws on insights from diverse fields including neuroscience,immunology,and pathology,p rovides a critical analysis of ongoing research efforts in inflammasome biology,with specific emphasis on Nod-like receptor(NLR)and pyrin domain-containing protein 3(NLRP3).
基金supported by NIH grants,Nos.R01NS125074,R01AG083164,R01NS107365,and R21NS127177(to YL),1F31NS129204-01A1(to KW)and Albert Ryan Fellowship(to KW).
文摘Adult neurogenesis continuously produces new neurons critical for cognitive plasticity in adult rodents.While it is known transforming growth factor-βsignaling is important in embryonic neurogenesis,its role in postnatal neurogenesis remains unclear.In this study,to define the precise role of transforming growth factor-βsignaling in postnatal neurogenesis at distinct stages of the neurogenic cascade both in vitro and in vivo,we developed two novel inducible and cell type-specific mouse models to specifically silence transforming growth factor-βsignaling in neural stem cells in(mGFAPcre-ALK5fl/fl-Ai9)or immature neuroblasts in(DCXcreERT2-ALK5fl/fl-Ai9).Our data showed that exogenous transforming growth factor-βtreatment led to inhibition of the proliferation of primary neural stem cells while stimulating their migration.These effects were abolished in activin-like kinase 5(ALK5)knockout primary neural stem cells.Consistent with this,inhibition of transforming growth factor-βsignaling with SB-431542 in wild-type neural stem cells stimulated proliferation while inhibited the migration of neural stem cells.Interestingly,deletion of transforming growth factor-βreceptor in neural stem cells in vivo inhibited the migration of postnatal born neurons in mGFAPcre-ALK5fl/fl-Ai9 mice,while abolishment of transforming growth factor-βsignaling in immature neuroblasts in DCXcreERT2-ALK5fl/fl-Ai9 mice did not affect the migration of these cells in the hippocampus.In summary,our data supports a dual role of transforming growth factor-βsignaling in the proliferation and migration of neural stem cells in vitro.Moreover,our data provides novel insights on cell type-specific-dependent requirements of transforming growth factor-βsignaling on neural stem cell proliferation and migration in vivo.
基金funded by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior(CAPES,https://www.gov.br/capes)and by Mitacs(https://www.mitacs.ca),under grant number IT42277Letícia Vitorazi acknowledges support from FAPERJ(https://www.faperj.br)under grant number E-26/200.129/2023—Bolsa JCNE/FAPERJ+1 种基金Flavia Braghiroli acknowledges the Natural Sciences and Engineering Research Council of Canada(NSERC),Alliance project ALLRP 585984-23the Fonds de recherche duQuébec—Nature et technologies(FRQNT)(https://doi.org/10.69777/355295),grant number 202250.
文摘The development of sustainable materials has encouraged the use of biopolymers as alternatives to synthetic polymers.Polymeric films have stood out for their high potential in environmentally sustainable applications.Conventional cellulose acetate(CA)-based films are attractive due to their biodegradability and film-forming ability.However,their functional performance often requires enhancement through the incorporation of additives.In this context,two bio-based additives were investigated:condensed tannin(0%,5%and 10%wt.),a natural polyphenol known for its antioxidant and antimicrobial properties,and nanocrystalline cellulose(CNC)(0%,0.5%and 1%wt.),which act as reinforcing agents to improve mechanical strength and barrier properties.The results showed that tannin generally enhanced mechanical strength and surface uniformity while imparting contact-based antimicrobial activity.CNC reduced water uptake and improved thermal stability,but when used alone,it tended to lower mechanical performance and increase surface roughness.The combination of CNC and tannin produced performance shifts that depended strongly on their relative concentrations,with no consistent synergistic effect across all properties.In certain balanced ratios,CNC benefited fromtannin’smatrix-stabilizing effect,leading to improved strength or reduced moisture absorption.Antimicrobial activity in acetic acid–based films was linked to residual acidity,whereas in acetonebased films,tannin alone was responsible for the antimicrobial effect by contact.These findings highlight that the physicochemical,mechanical,and functional performance of CA films(CAFs)is governed not only by additive type but also by the precise interplay between CNC and tannin,underscoring the need for formulation strategies tailored to the requirements of specific applications.
基金funded by the São Paulo Research Foundation (FAPESPgrant No. 2022/02327-6)supported by the FAPESP scholarship (2021/00270-4 and 2024/05491-7)
文摘Neurodegenerative diseases affect millions of people worldwide,with Alzheimer’s disease(AD)being the leading cause of dementia.It is estimated that more than 50 million people live with this condition,which is expected to triple by 2050,driven mainly by the aging of the global population(GBD 2019 Dementia Forecasting Collaborators,2022).
基金supported by the National Research Foundation of Korea,Nos.2021R1A2C2006110,2021M3E5D9021364,2019R1A5A2026045(to BGK)the Korea Initiative for Fostering University of Research and Innovation(KIURI)Program of the NRF funded by the MSIT(to HK),No.NRF2021M3H1A104892211(to HSK)。
文摘Spinal cord injury results in permanent loss of neurological functions due to severance of neural networks.Transplantation of neural stem cells holds promise to repair disrupted connections.Yet,ensuring the survival and integration of neural stem cells into the host neural circuit remains a formidable challenge.Here,we investigated whether modifying the intrinsic properties of neural stem cells could enhance their integration post-transplantation.We focused on phosphatase and tensin homolog(PTEN),a well-characterized tumor suppressor known to critically regulate neuronal survival and axonal regeneration.By deleting Pten in mouse neural stem cells,we observed increased neurite outgrowth and enhanced resistance to neurotoxic environments in culture.Upon transplantation into injured spinal cords,Pten-deficient neural stem cells exhibited higher survival and more extensive rostrocaudal distribution.To examine the potential influence of partial PTEN suppression,rat neural stem cells were treated with short hairpin RNA targeting PTEN,and the PTEN knockdown resulted in significant improvements in neurite growth,survival,and neurosphere motility in vitro.Transplantation of sh PTEN-treated neural stem cells into the injured spinal cord also led to an increase in graft survival and migration to an extent similar to that of complete deletion.Moreover,PTEN suppression facilitated neurite elongation from NSC-derived neurons migrating from the lesion epicenter.These findings suggest that modifying intrinsic signaling pathways,such as PTEN,within neural stem cells could bolster their therapeutic efficacy,offering potential avenues for future regenerative strategies for spinal cord injury.
基金supported by the Basic Science Research Program(2023R1A2C3004336,RS-202300243807)&Regional Leading Research Center(RS-202400405278)through the National Research Foundation of Korea(NRF)grant funded by the Korea Government(MSIT)。
文摘Wearable sensors integrated with deep learning techniques have the potential to revolutionize seamless human-machine interfaces for real-time health monitoring,clinical diagnosis,and robotic applications.Nevertheless,it remains a critical challenge to simultaneously achieve desirable mechanical and electrical performance along with biocompatibility,adhesion,self-healing,and environmental robustness with excellent sensing metrics.Herein,we report a multifunctional,anti-freezing,selfadhesive,and self-healable organogel pressure sensor composed of cobalt nanoparticle encapsulated nitrogen-doped carbon nanotubes(CoN CNT)embedded in a polyvinyl alcohol-gelatin(PVA/GLE)matrix.Fabricated using a binary solvent system of water and ethylene glycol(EG),the CoN CNT/PVA/GLE organogel exhibits excellent flexibility,biocompatibility,and temperature tolerance with remarkable environmental stability.Electrochemical impedance spectroscopy confirms near-stable performance across a broad humidity range(40%-95%RH).Freeze-tolerant conductivity under sub-zero conditions(-20℃)is attributed to the synergistic role of CoN CNT and EG,preserving mobility and network integrity.The Co N CNT/PVA/GLE organogel sensor exhibits high sensitivity of 5.75 k Pa^(-1)in the detection range from 0 to 20 k Pa,ideal for subtle biomechanical motion detection.A smart human-machine interface for English letter recognition using deep learning achieved 98%accuracy.The organogel sensor utility was extended to detect human gestures like finger bending,wrist motion,and throat vibration during speech.
文摘The regenerative capacity of peripheral nerve is significantly different from injury responses in the central nervous system.Regeneration of injured axons,re-myelination and functional recovery are readily observed after injury to peripheral nerve.
文摘Buildings represent a significant share of the world’s energy consumption,and the sector has drawn the attention of governments,which have adopted policies to reduce energy expenditure.The Certifications of Energy Efficiency in Buildings stand out as one possible solution to achieve this goal,employed in several countries worldwide.The European Union presents advanced energy assessment programs for buildings,being a reference and model for several other regulations in the world.The Energy Certification System for Buildings(SCE)of Portugal is considered a success case,reflected in the significant number of energy certificates issued.The Brazilian Labeling Program for Building(PBE Edifica),first launched in 2009,does not find a broad application today in the Brazilian scenario.This work shows a synthesis of the European Energy Performance of Buildings Directive(EPBD)and the Brazilian and Portuguese regulations’history.A qualitative comparison is made between the SCE and the PBE Edifica to verify a European and a developing country’s regulations with a certain degree of cultural and climatic similarities.Through this comparison,proposals are made for improvements to Brazilian certification,seeking to improve its energy planning and energy policy concerning its building stock.The suggestions for improvement presented may also be appropriate for other developing countries that have started and have not yet successfully implemented their energy certification programs in buildings.
文摘Food restriction is a strategy to improve the productive efficiency of some aquatic organisms.It is expected with the implementation of food restriction programs to first reduce the feed consumption by the cultivated species and consequently reduce the waste load in the water.In addition,there is a lower employment of labor during periods of food restriction.However,the efficiency of the feed restriction and the compensatory gain of weight by the organisms cultivated will depend on the adaptation and the characteristics of the species in question.Several methodologies have tested forms of food restriction applied to fish farming.Some of them are addressed in this review,as well as results and comparisons made with several authors on the subject in question.The purpose of this paper was to describe the main reasons for using food restriction,its implications on fish organism and to compare results from previous studies.
文摘This study aimed to evaluate the efficacy of an individualized remote exercise program on the improvement of body composition and physical fitness of a heterogeneous group of patients who completed breast cancer treatment.This prospective study included 107 women aged 18 to 60,shortly after curative treatment for localized breast cancer,at the Erasto Gaertner Cancer Hospital(HEG)in Curitiba,PR,Brazil.Body composition,maximal oxygen consumption,and muscle resistance were evaluated after nine months of intervention while considering adherence to the program,level of physical activity,presence of binge eating disorder,tumor classification,and treatment type.Seventy-eight women(72.8%)adhered to the training program.Adherent participants showed significant changes in body mass([-4.3±3.6]kg;p<0.0001),body mass index([-1.6±1.5]kg·m^(−2);p<0.0001),body fat(−3.4%±3.1%;p<0.0001),maximal oxygen consumption([7.5±2.0]ml·kg^(−1)·min^(−1));p<0.0001),and abdominal resistance([11.2±2.8]reps;p<0.0001).In contrast,these variables did not change significantly in the non-adherent group.Among the adherent participants,those subclassified in the severe binge group showed a more noticeable reduction in body mass,body mass index,and body fat(p<0.05)than those in the non-binge group.Individualized remotely-guided physical exercise programs can improve the body composition and physical fitness of women undergoing post-breast cancer surveillance,regardless of pathological history or treatment.
文摘Introduction: Child obesity has important consequences on the child’s health and is related to the risk of developing chronic diseases. That brings up the need for research assessing the impact of obesity-and overweight-reduction programs with close attention to methodology aspects and precise indicators of the impact of such programs. Goal: Assessing the impact of a physical activity program on the plasma concentrations of adiponectin, leptin, and ghrelin in overweight and obese schoolchildren. Methods: Randomized controlled trial, double-blind, with 6-to 9-year-old overweight and obese school-children. A sample of 79 schoolchildren randomly distributed into control and intervention groups was subjected to a physical activity program. The levels of adiponectin, leptin, ghrelin, body mass index, body fat percentage, anthropometry, lipid profile and glycemia were evaluated. The program’s impact was assessed through multivariate linear regression models. Result: When comparing the groups, a significant difference was found for adiponectin, which shows an increase in the proportion of subjects with higher adiponectin concentrations for the intervention group and a reduction in body mass index and body fat percentage. Conclusion: The impact of the intervention program was positive in increasing adiponectin levels associated with a reduction in body mass index and body fat percentage.
基金supported by the National Institutes of Health,Nos.AA025919,AA025919-03S1,and AA025919-05S1(all to RAF).
文摘Hippocampal neuronal loss causes cognitive dysfunction in Alzheimer’s disease.Adult hippocampal neurogenesis is reduced in patients with Alzheimer’s disease.Exercise stimulates adult hippocampal neurogenesis in rodents and improves memory and slows cognitive decline in patients with Alzheimer’s disease.However,the molecular pathways for exercise-induced adult hippocampal neurogenesis and improved cognition in Alzheimer’s disease are poorly understood.Recently,regulator of G protein signaling 6(RGS6)was identified as the mediator of voluntary running-induced adult hippocampal neurogenesis in mice.Here,we generated novel RGS6fl/fl;APP_(SWE) mice and used retroviral approaches to examine the impact of RGS6 deletion from dentate gyrus neuronal progenitor cells on voluntary running-induced adult hippocampal neurogenesis and cognition in an amyloid-based Alzheimer’s disease mouse model.We found that voluntary running in APP_(SWE) mice restored their hippocampal cognitive impairments to that of control mice.This cognitive rescue was abolished by RGS6 deletion in dentate gyrus neuronal progenitor cells,which also abolished running-mediated increases in adult hippocampal neurogenesis.Adult hippocampal neurogenesis was reduced in sedentary APP_(SWE) mice versus control mice,with basal adult hippocampal neurogenesis reduced by RGS6 deletion in dentate gyrus neural precursor cells.RGS6 was expressed in neurons within the dentate gyrus of patients with Alzheimer’s disease with significant loss of these RGS6-expressing neurons.Thus,RGS6 mediated voluntary running-induced rescue of impaired cognition and adult hippocampal neurogenesis in APP_(SWE) mice,identifying RGS6 in dentate gyrus neural precursor cells as a possible therapeutic target in Alzheimer’s disease.
文摘BACKGROUND Family caregivers of cirrhosis patients(CPs)often experience burden,stress,and depression.Investigating whether these conditions improve following the patient undergoing liver transplantation(LT)is crucial,as it would elucidate the compre-hensive benefits of the procedure and demonstrate the positive impacts not only on the patients but also on their caregivers and society.AIM To compare the levels of burden,stress and depression among family caregivers of cirrhotic and liver transplant patients.METHODS This cross-sectional observational study evaluated caregivers of CPs and LT recipients at a quaternary Brazilian hospital.Instruments included identification cards,interview scripts,the caregiver burden scale Inventory,Lipp’s Stress Symptom Inventory,and the Beck Depression Inventory-Second Edition.Psychometric analyses involved confirmatory factor analysis and calculation of McDonald’s omega and composite reliability.Factor scores were compared with the Mann-Whitney U test,with effect size as the rank-biserial correlation coefficient(r).Statistical analysis was performed with R software(P<0.05).RESULTS Seventy-seven CP caregivers and 65 LT recipient caregivers were included.Most were female(CP:85.7%vs LT:84.6%)and the patients’spouses(76.6%vs 63.1%).The median age and caregiving duration were 55.4(23.3-76.3)vs 54.6(25.7-82.1)and 3.9(1-20)vs 8(1.5-24)years,respectively(P=0.001).LT caregivers were less likely to be at risk of overload(21.5%vs 49.4%),to be under stress(33.8%vs 36.4%)and to show symptoms of depression(15.4%vs 35.1%).Compared with LT caregivers,CP caregivers had greater median factor scores for burden(general tension,P=0.012;isolation,P=0.014;disappointment,P=0.004),depression(P=0.008),and stress(P=0.047),with small to moderate effect sizes.The disappointment(r=0.240)and depression(r=0.225)dimensions had the largest effect sizes.CONCLUSION Family caregivers of LT recipients are less likely to exhibit symptoms of burden,stress,and depression,suggesting that the benefits of LT extend to the patients’family members.
文摘Spinal cord injury results in the loss of sensory,motor,and autonomic functions,which almost always produces permanent physical disability.Thus,in the search for more effective treatments than those already applied for years,which are not entirely efficient,researches have been able to demonstrate the potential of biological strategies using biomaterials to tissue manufacturing through bioengineering and stem cell therapy as a neuroregenerative approach,seeking to promote neuronal recovery after spinal cord injury.Each of these strategies has been developed and meticulously evaluated in several animal models with the aim of analyzing the potential of interventions for neuronal repair and,consequently,boosting functional recovery.Although the majority of experimental research has been conducted in rodents,there is increasing recognition of the importance,and need,of evaluating the safety and efficacy of these interventions in non-human primates before moving to clinical trials involving therapies potentially promising in humans.This article is a literature review from databases(PubMed,Science Direct,Elsevier,Scielo,Redalyc,Cochrane,and NCBI)from 10 years ago to date,using keywords(spinal cord injury,cell therapy,non-human primates,humans,and bioengineering in spinal cord injury).From 110 retrieved articles,after two selection rounds based on inclusion and exclusion criteria,21 articles were analyzed.Thus,this review arises from the need to recognize the experimental therapeutic advances applied in non-human primates and even humans,aimed at deepening these strategies and identifying the advantages and influence of the results on extrapolation for clinical applicability in humans.
基金supported by grants from Mission Connect, a project of the TIRR Foundation, the Glaucoma Research FoundationNIH grants R01NS112691 and R01NS076708 (to TAW)
文摘Stress signaling following axon injury stimulates a transcriptional program for regeneration that might be exploited to promote central nervous system repair.However,this stress response drives neuronal apoptosis in non-regenerative environments.This duality presents a quandary for the development of therapeutic interventions:manipulating stress signaling to enhance recovery of damaged neurons risks accelerating neurodegeneration or restricting regenerative potential.This dichotomy is well illustrated by the fates of retinal ganglion cells(RGCs)following optic nerve crush.In this central nervous system injury model,disruption of a stress-activated MAP kinase(MAPK)cascade blocks the extensive apoptosis of RGCs that occurs in wild-type mice(Watkins et al.,2013;Welsbie et al.,2017).
基金supported by NIH grants(R01NS125074,R01AG083164,and R21NS127177)(to YL).
文摘Adult microglia,by continuously sensing changes in their environment and communicating with nearly all brain cell types,are considered to be the immune sentinels of the brain.In the healthy central nervous system(CNS),microglia display a unique molecular homeostatic signature(i.e.,Tmem119,P2ry12,Sall1,Siglech,Gpr34,and Hexb)(Figure 1A).
文摘Traumatic brain injury(TBI)is a public health problem with an undue economic burden that impacts nearly every age,ethnic,and gender group across the globe(Capizzi et al.,2020).TBIs are often sustained during a dynamic range of exposures to energetic environmental forces and as such outcomes are typically heterogeneous regarding severity and pathology(Capizzi et al.,2020).
基金funded by the Natural Sciences and Engineering Research Council of Canada(RGPIN:2016-05964&2023-04283 to JHK)the University of Manitoba Tri-Agency Bridge Funding(#57289 to JHK)the Ricard Foundation’s Baxter Bursary(to JP)。
文摘Premise:The com bined effects of modern healthcare practices which prolong lifespan and declining birthrates have created unprecedented changes in age demographics worldwide that are especially pronounced in Japan,South Korea,Europe,and North America.Since old age is the most significant predictor of dementia,global healthcare systems must rise to the challenge of providing care for those with neurodegenerative disorders.
