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Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

Neural Regeneration Research 2025年第4期20卷 1164-1177页

作者： Pengfei Wang Yuewei Bi Min Li Jiazhi Chen Zhuyong Wang Huantao Wen Ming Zhou Minjie Luo Wangming Zhang Neurosurgery center Department of Pediatric NeurosurgeryGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

Long-term levodopa administration can lead to the development of levodopa-induced *** oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced ***,studies have reported increased oscillation power in cases of levodopa-induced ***,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced ***,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is *** found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s ***,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(M1)↔dorsolateral striatum gamma *** of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional M1↔dorsolateral striatum ***,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the M1→dorsolateral striatum *** findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

关键词： aperiodic components dopamine D3 receptor dorsolateral striatum functional connectivity gamma oscillations levodopa-induced-dyskinesia local field potentials neuromodulation Parkinson’s disease primary motor cortex

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Fast-tracking regenerative medicine for traumatic brain injury

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Neural Regeneration Research 2020年第7期15卷 1179-1190页

作者： Brooke Bonsack Matt Heyck Chase Kingsbury Blaise Cozene Nadia Sadanandan Jea-Young Lee Cesar V. Borlongan center of excellence for aging and brain repair University of South Florida College of Medicine

Traumatic brain injury remains a global health crisis that spans all demographics,yet there exist limited treatment options that may effectively curtail its lingering *** brain injury pathology entails a progression from primary injury to inflammation-mediated secondary cell *** this inflammation as a means of ameliorating the greater symptomology of traumatic brain injury has emerged as an attractive treatment *** this review,we recapitulate and evaluate the important developments relating to regulating traumatic brain injury-induced neuroinflammation,edema,and blood-brain barrier disintegration through pharmacotherapy and stem cell *** these studies of stand-alone treatments have yielded some positive results,more therapeutic outcomes have been documented from the promising area of combined drug and stem cell *** the facilitatory properties of certain pharmaceuticals with the anti-inflammatory and regenerative effects of stem cell transplants creates a synergistic effect greater than the sum of its *** burgeoning evidence in favor of combined drug and stem cell therapies warrants more elaborate preclinical studies on this topic in order to pave the way for later clinical trials.

关键词： clinical trials combined therapy inflammatory cascade neuroinflammation neuroprotection neurotrauma pharmacotherapy preclinical studies secondary cell death stem cells

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Neuroprotective and neuroregenerative potential of pharmacologically-induced hypothermia with D-alanine D-leucine enkephalin in brain injury

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Neural Regeneration Research 2018年第12期13卷 2029-2037页

作者： M.Grant Liska Marci G.Crowley Julian P.Tuazon Cesar V.Borlongan center of excellence for aging and brain repair University of South Florida College of Medicine

Neurovascular disorders, such as traumatic brain injury and stroke, persist as leading causes of death and disability - thus, the search for novel therapeutic approaches for these disorders continues. Many hurdles have hindered the translation of effective therapies for traumatic brain injury and stroke primarily because of the inherent complexity of neuropathologies and an inability of current treatment approaches to adapt to the unique cell death pathways that accompany the disorder symptoms. Indeed, developing potent treatments for brain injury that incorporate dynamic and multiple disorder-engaging therapeutic targets are likely to produce more effective outcomes than traditional drugs. The therapeutic use of hypothermia presents a promising option which may fit these criteria. While regulated temperature reduction has displayed great promise in preclinical studies of brain injury, clinical trials have been far less consistent and associated with adverse effects, especially when hypothermia is pursued via systemic cooling. Accordingly, devising better methods of inducing hypothermia may facilitate the entry of this treatment modality into the clinic. The use of the delta opioid peptide D-alanine D-leucine enkephalin（DADLE） to pharmacologically induce temperature reduction may offer a potent alternative, as DADLE displays both the ability to cause temperature reduction and to confer a broad profile of other neuroprotective and neuroregenerative processes. This review explores the prospect of DADLE-mediated hypothermia to treat neurovascular brain injuries, emphasizing the translational steps necessary for its clinical translation.

关键词： stroke traumatic brian injury neurodegeneration temperature management regenerative medicine delta opioids metabolic suppression cerebrovascular disease neurovascular disease

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Stroke gets in your eyes: stroke-induced retinal ischemia and the potential of stem cell therapy

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Neural Regeneration Research 2020年第6期15卷 1014-1018页

作者： Chase Kingsbury Matt Heyck Brooke Bonsack Jea-Young Lee Cesar V.Borlongan center of excellence for aging and brain repair University of South Florida College of Medicine

Stroke persists as a global health and economic crisis,yet only two interventions to reduce stroke-induced brain injury *** the clinic,many patients who experience an ischemic stroke often further suffer from retinal ischemia,which can inhibit their ability to make a functional recovery and may diminish their overall quality of *** this,no treatments for retinal ischemia have been *** both cases,ischemia-induced mitochondrial dysfunction initiates a cell loss cascade and inhibits endogenous brain *** cells have the ability to transfer healthy and functional mitochondria not only ischemic neurons,but also to similarly endangered retinal cells,replacing their defective mitochondria and thereby reducing cell *** this review,we encapsulate and assess the relationship between cerebral and retinal ischemia,recent preclinical advancements made using in vitro and in vivo retinal ischemia models,the role of mitochondrial dysfunction in retinal ischemia pathology,and the therapeutic potential of stem cell-mediated mitochondrial ***,we discuss the pitfalls in classic rodent functional assessments and the potential advantages of laser Doppler as a metric of stroke *** studies evaluated in this review highlight stem cell-derived mitochondrial transfer as a novel therapeutic approach to both retinal ischemia and ***,we posit the immense correlation between cerebral and retinal ischemia as an underserved area of study,warranting exploration with the aim of these treating injuries together.

关键词： laser Doppler MCAO mesenchymal stem cells mitochondrial network mitochondrial transfer ophthalmic artery optic nerve oxygen-glucose deprivation regenerative medicine retinal ganglion cells visual impairment

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Neuroprotective effects of human bone marrow mesenchymal stem cells against cerebral ischemia are mediated in part by an anti-apoptotic mechanism

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Neural Regeneration Research 2019年第4期14卷 597-604页

作者： Yuyang Zhang Seongjin Yu Julian P.Tuazon Jea-Young Lee Sydney Corey Lauren Kvederis Chase Kingsbury Yuji Kaneko Cesar V.Borlongan Department of Neurosurgery and brain repair Center of Excellence for Aging and Brain Repair University of South Florida Department of Pharmacology/School of Life Science and Biopharmaceutical Science Shenyang Pharmaceutical University

Transplantation of human bone marrow mesenchymal stem cells(hMSCs) stands as a potent stroke therapy, but its exact mechanism remains unknown. This study investigated the anti-apoptotic mechanisms by which hMSCs exert neuroprotective effects on cerebral ischemia. Primary mixed cultures of rat neurons and astrocytes were cultured and exposed to oxygen-glucose deprivation. A two-hour period of "reperfusion" in standard medium and normoxic conditions was allowed and immediately followed by hMSCs and/or Bcl-2 antibody treatment. Cell viability of primary rat neurons and astrocytes was determined by 3-(4,5-dimethylthianol-2-yl)-2,5 diphenyl tetrazolium bromide and trypan blue exclusion methods. hMSC survival and differentiation were characterized by immunocytochemistry, while the concentration of Bcl-2 in the supernatant was measured by enzyme-linked immunosorbent assay to reveal the secretory anti-apoptotic function of hMSCs. Cultured hMSCs expressed embryonic-like stem cell phenotypic markers CXCR4, Oct4, SSEA4, and Nanog, as well as immature neural phenotypic marker Nestin. Primary rat neurons and astrocytes were protected from oxygen-glucose deprivation by hMSCs, which was antagonized by the Bcl-2 antibody. However, Bcl-2 levels in the supernatants did not differ between hMSCand non-treated cells exposed to oxygen-glucose deprivation. Neuroprotective effects of hMSCs against cerebral ischemia were partially mediated by the anti-apoptotic mechanisms. However, further studies are warranted to fully elucidate this pathway.

关键词： apoptosis Bcl-2 antibody human mesenchymal stem cells ischemia neuroprotection oxygen glucose deprivation

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Stem cell-derived extracellular vesicles as potential mechanism for repair of microvascular damage within and outside of the central nervous system in amyotrophic lateral sclerosis:perspective schema

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Neural Regeneration Research 2021年第4期16卷 680-681页

作者： Svitlana Garbuzova-Davis Cesario V.Borlongan center of excellence for aging&brain repair Department of Neurosurgery and Brain RepairUniversity of South FloridaMorsani College of MedicineTampaFLUSA Department of Molecular Pharmacology and Physiology Department of Pathology and Cell BiologyUniversity of South FloridaMorsani College of MedicineTampaFLUSA

Microvascular alterations within and outside the central nervous system(CNS)in amyotrophic lateral sclerosis(ALS):ALS is a fatal neurodegenerative disease leading to paralysis and eventual death within 3 to 5 years of diagnosis due to respiratory *** pathogenic intrinsic and extrinsic effectors are involved in the diffuse motor neuron ***,impairment of neurovascular unit components in the brain and spinal cord in ALS patients and in animal models of disease was noted and points to vascular pathology being a key factor in the recognition of ALS as a neurovascular disease(Garbuzova-Davis et al.,2011).

关键词： damage alterations diagnosis

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Traumatic brain injury treatment using a rodent model of homelessness

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Neural Regeneration Research 2024年第9期19卷 1873-1874页

作者： Molly Monsour Cesar V.Borlongan University of South Florida Morsani College of Medicine TampaFLUSA center of excellence for aging and brain repair Department of Neurosurgery and Brain RepairUniversity of South Florida Morsani College of MedicineTampaFLUSA

Introduction:Traumatic brain injury(TBI)is a common diagnosis among veterans secondary to combat *** is also rampant among those experiencing homelessness,possibly due to veterans making up 12.3%of the homeless population(Tsai and Rosenheck,2015),or due to the high risk of violence or trauma among those experiencing *** is up to 10×more prevalent among those experiencing homelessness(Stubbs et al.,2020;Dell et al.,2021).

关键词： diagnosis TBI less

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Going straight for the gut:gut-brain axis pathology and treatment of Parkinson's disease

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Neural Regeneration Research 2024年第10期19卷 2111-2112页

作者： Dominique Ebedes Cesar V.Borlongan University of South Florida Morsani College of Medicine TampaFLUSA center of excellence for aging and brain repair Department of Neurosurgery and Brain RepairUniversity of South Florida Morsani College of MedicineTampaFLUSA

This perspective focuses on the recent literature regarding the role of the gut-brain axis(GBA) in fecal microbiota transplantation(FMT) and stem cell therapy(SCT) in Parkinson's disease(PD).PD is the second most common neurodegenerative disease in the United States,yet therapies remain *** research suggests that the GBA may play a role in the pathogenesis of *** FMT as well as SCT offer promising new avenues for PD *** bing the interactions between FMT and SCT with the GBA may reveal novel therapeutics for PD.

关键词： straight pathology pathogenesis

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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： Yi Qi Xueying Chen Bowen Liu Xuliang Lin Xueqing Qiu Yanlin Qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang center Guangdong Basic Research center of excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel Biomass valorization Electrocatalysis Lignin oxidation Coupling

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High-dose dexamethasone regulates microglial polarization via the GR/JAK1/STAT3 signaling pathway after traumatic brain injury

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Neural Regeneration Research 2025年第9期20卷 2611-2623页

作者： Mengshi Yang Miao Bai Yuan Zhuang Shenghua Lu Qianqian Ge Hao Li Yu Deng Hongbin Wu Xiaojian Xu Fei Niu Xinlong Dong Bin Zhang Baiyun Liu Beijing Tiantan Hospital Capital Medical UniversityBeijingChina Department of Neurology The First Hospital of Tsinghua UniversityBeijingChina Department of Neurotrauma and Beijing Key Laboratory of Central Nervous System Injury Beijing Neurosurgical InstituteCapital Medical UniversityBeijingChina Department of Critical Care Medicine Beijing Tiantan HospitalCapital Medical UniversityBeijingChina center for Nerve Injury and repair Beijing Institute of Brain DisordersChina National Clinical Research Center for Neurological DiseasesBeijingChina

Although microglial polarization and neuroinflammation are crucial cellular responses after traumatic brain injury,the fundamental regulatory and functional mechanisms remain insufficiently *** potent anti-inflammato ry agents,the use of glucoco rticoids in traumatic brain injury is still controversial,and their regulatory effects on microglial polarization are not yet *** the present study,we sought to determine whether exacerbation of traumatic brain injury caused by high-dose dexamethasone is related to its regulatory effects on microglial polarization and its mechanisms of *** vitro cultured BV2 cells and primary microglia and a controlled cortical impact mouse model were used to investigate the effects of dexamethasone on microglial ***,dexamethasone,RU486(a glucocorticoid receptor antagonist),and ruxolitinib(a Janus kinase 1 antagonist)were ***-sequencing data obtained from a C57BL/6 mouse model of traumatic brain injury were used to identify potential targets of *** Morris water maze,quantitative reverse transcription-polymerase chain reaction,western blotting,immunofluorescence and confocal microscopy analysis,and TUNEL,Nissl,and Golgi staining were performed to investigate our ***-throughput sequencing results showed that arginase 1,a marker of M2 microglia,was significantly downregulated in the dexamethasone group compared with the traumatic brain injury group at3 days post-traumatic brain *** dexamethasone inhibited M1 and M2 microglia,with a more pronounced inhibitory effect on M2microglia in vitro and in *** receptor plays an indispensable role in microglial polarization after dexamethasone treatment following traumatic brain ***,glucocorticoid receptor activation increased the number of apoptotic cells and neuronal death,and also decreased the density of dendritic spines.A possible downstream receptor signaling mechanism is th

关键词： apoptosis BV2 microglia dexamethasone glucocorticoid receptor glucocorticoids innate immune system microglial polarization neuroinflammation primary microglia traumatic brain injury

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