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Chitosan-based thermosensitive hydrogel with long-term release of murine nerve growth factor for neurotrophic keratopathy

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Neural Regeneration Research 2024年第3期19卷 680-686页

作者： Jie Wu Yulei Huang Hanrui Yu Kaixiu Li Shifeng Zhang Guoqing Qiao Xiao Liu Hongmei Duan Yifei Huang Kwok-Fai So Zhaoyang Yang Xiaoguang Li Liqiang Wang Department of Ophthalmology the Third Medical CenterChinese PLA General HospitalBeijingChina The PLA Medical College Department of NephrologyChinese PLA Institute of NephrologyState Key Laboratory of Kidney DiseasesNational Clinical Research Center for Kidney DiseasesBeijingChina Department of Ophthalmology Hainan Hospital of Chinese PLA General HospitalSanyaHainan ProvinceChina Medical School of Chinese PLA BeijingChina Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administrative RegionChina center for Brain Science and Brain-Inspired Intelligence Guangdong-Hong Kong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina School of Engineering Medicine Beijing Key Laboratory for Biomaterials and Neural RegenerationBeihang UniversityBeijingChina Beijing International Cooperation Bases for Science and Technology on Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Big Data-Based Precision MedicineBeihang UniversityBeijingChina

Neurotrophic keratopathy is a persistent defect of the corneal epithelium,with or without stromal ulceration,due to corneal nerve deficiency caused by a variety of *** treatment options for neurotrophic keratopathy are *** this study,an ophthalmic solution was constructed from a chitosan-based thermosensitive hydrogel with long-term release of murine nerve growth factor(CTH-mNGF).Its effectiveness was evaluated in corneal denervation(CD)mice and patients with neurotrophic *** the preclinical setting,CTH-mNGF was assessed in a murine corneal denervation ***-mNGF was transparent,thermosensitive,and ensured sustained release of mNGF for over 20 hours on the ocular surface,maintaining the local mNGF concentration around 1300 pg/mL in *** denervation mice treated with CTH-mNGF for 10 days showed a significant increase in corneal nerve area and total corneal nerve length compared with non-treated and CTH treated mice.A subsequent clinical trial of CTH-mNGF was conducted in patients with stage 2 or 3 neurotrophic *** received topical CTH-mNGF twice daily for 8 *** sodium images,Schirmer’s test,intraocular pressure,Cochet-Bonnet corneal perception test,and best corrected visual acuity were *** total,six patients(total of seven eyes)diagnosed with neurotrophic keratopathy were *** 8 weeks of CTH-mNGF treatment,all participants showed a decreased area of corneal epithelial defect,as stained by ***,six out of seven eyes had fluorescence staining scoresnerve density was observed by in vivo confocal microscopy after 8 weeks of CTH-mNGF treatment in three out of seven *** study demonstrates that CTH-mNGF is transparent,thermosensitive,and has sustained-release *** effecti

关键词： chitosan corneal reinnervation murine nerve growth factor neurotrophic keratopathy thermosensitive hydrogel

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Myelotomy promotes locomotor recovery in rats subjected to spinal cord injury： a meta-analysis of six randomized controlled trials

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Neural Regeneration Research 2018年第6期13卷 1096-1106页

作者： Chuan Qin Wen-Hao Zhang De-Gang Yang Ming-Liang Yang Liang-Jie Du Jian-Jun Li School of Rehabilitation Medicine. Capital Medical University Beijing China Department of Spinal and Neural Functional Reconstruction China Rehabilitation Research Center Beijing China Beijing Key Laboratory of Neural injury and Rehabilitation Beijing China China Rehabilitation Science Institute Beijing China center of Neural injury and Repair Beijing Institute for Brain Disorders Beijing China

OBJECTIVE： To investigate the effects of myelotomy on locomotor recovery in rats subjected to spinal cord injury. DATA SOURCES： Electronic databases including Pub Med, Science Citation Index, Cochrane Library, China National Knowledge Infrastructure, Chinese Journals Full-text Database, China Biology Medicine disc, and Wanfang Database were searched to retrieve related studies published before September 2017. The Me SH terms（the Medical Subject Headings） such as ＂myelotomy＂, ＂spinal cord injuries＂, ＂rats＂, ＂randomized controlled trial＂ and all related entry terms were searched. DATA SELECTION： Randomized controlled trials using myelotomy for the treatment of acute spinal cord injury in rats were included. Basso, Beattie, and Bresnahan scores were adopted as the evaluation method. Rev Man Software（version 5.3） was used for data processing. The χ^2 and I^2 tests were used to assess heterogeneity. Using a random-effects model, a subgroup analysis was conducted to analyze the source of the heterogeneity. OUTCOME MEASURES： Basso, Beattie, and Bresnahan scores were observed 1–6 weeks after spinal cord ***： Six animal trials were included, using a total of 143 lab rats. The included trials were divided into two subgroups by injury degrees（moderate or severe）. The pooled results showed that, 1–6 weeks after spinal cord injury, the overall Basso, Beattie, and Bresnahan score was significantly higher in the myelotomy group than in the contusion group（weighted mean difference（WMD） = 0.60; 95% confidence interval（CI）： 0.23–0.97; P = 0.001; WMD = 2.10; 95% CI： 1.56–2.64; P 〈 0.001; WMD = 2.65; 95% CI： 1.73–3.57; P 〈 0.001; WMD = 1.66; 95% CI： 0.80–2.52; P 〈 0.001; WMD = 2.09; 95% CI： 0.92–3.26, P 〈 0.001; WMD = 2.25; 95% CI： 1.06–3.44, P 〈 0.001）. The overall heterogeneity was high（I^2 = 85%; I^2 = 95%; I^2 = 94%; I^2 = 88%; I^2 = 91%; I^2 = 89%）. The results in the moderate injury subgroup showed that Basso, Beattie, and Bresnahan scores were significantly higher in

关键词： nerve regeneration spinal cord injury myelotomy locomotor recovery rats rehabilitation moderate injury randomized controlled trials systematic review meta-analysis neural regeneration

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Application of minimally invasive surgery in traumatic brain injury

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Chinese Journal of Traumatology 2014年第6期17卷 313-316页

作者： Liu Baiyun Department of Neurosurgery Beijing Tian Tan Hospital Capital Medical University Beijing 100050 China nerve injury and Repair center of Beijing Institute for Brain Disorders Beijing China

This article aims to expound the essence of minimally invasive surgery as well as when and how to use it in craniocerebral trauma surgery according to the characteristics of the disease. In neurosurgery, the importance of tissue protection should be from the inside to the outside, i.e. brain→dura→skull→scalp. In this article, I want to share my opinion and our team＇s experience in terms of selecting surgical approaches and incision, surgical treatment of the skull, dura handling, intracranial operation and placement of drainage based on the above theory. I hope this will be helpful for trauma surgeons.

关键词： Traumatic brain injuries Large craniectomy Surgical proeedures, minimally invasive

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Synergistic actions of olomoucine and bone morphogenetic protein-4 in axonal repair after acute spinal cord contusion

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Neural Regeneration Research 2014年第20期9卷 1830-1838页

作者： Liang Chen Jianjun Li Liang Wu Mingliang Yang Feng Gao Li Yuan Capital Medical University School of Rehabilitation Medicine Department of Spinal and Neural Function Reconstruction China Rehabilitation Research Center center of Neural injury and Repair Beijing Institute for Brain Disorders Rehabilitation center Beijing Xiaotangshan Rehabilitation Hospital Department of General Surgery China Rehabilitation Research Center

To determine whether olomoucine acts synergistically with bone morphogenetic protein-4 in the treatment of spinal cord injury, we established a rat model of acute spinal cord contusion by impacting the spinal cord at the T8 vertebra. We injected a suspension of astrocytes derived from glial-restricted precursor cells exposed to bone morphogenetic protein-4 （GDAsBMP） into the spinal cord around the site of the injury, and/or olomoucine intraperitoneally. Olomoucine effectively inhibited astrocyte proliferation and the formation of scar tissue at the injury site, but did not prevent proliferation of GDAsBMP or inhibit their effects in reducing the spinal cord lesion cavity. Furthermore, while GDAsBMP and olomoucine independently resulted in small improve- ments in locomotor function in injured rats, combined administration of both treatments had a significantly greater effect on the restoration of motor function. These data indicate that the combined use of olomoucine and GDAsBMP creates a better environment for nerve regeneration than the use of either treatment alone, and contributes to spinal cord repair after injury.

关键词： nerve regeneration spinal cord injury olomoucine glial-restricted precursor-derivedastrocytes glial scar cavity axonal regeneration neural regeneration

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Transforming growth factor beta 1, a cytokine with regenerative functions

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Neural Regeneration Research 2016年第10期11卷 1549-1552页

作者： Wale Sulaiman Doan H. Nguyen Ochsner Health System Department of Neurosurgery Back and Spine Center Tulane University New Orleans LA USA aboratory of Neural injury and Regeneration Ochsner Medical Center New Orleans LA USA

We review the biology and role of transforming growth factor beta 1 （TGF-β1） in peripheral nerve injury and regeneration, as it relates to injuries to large nerve trunks （i.e., sciatic nerve, brachial plexus）, which often leads to suboptimal functional recovery. Experimental studies have suggested that the reason for the lack of functional recovery resides in the lack of sufficient mature axons reaching their targets, which is a result of the loss of the growth-supportive environment provided by the Schwann cells in the distal stump of injured nerves. Using an established chronic nerve injury and delayed repair animal model that accu- rately mimics chronic nerve injuries in humans, we summarize our key findings as well as others to better understand the pathophysiology of poor functional recovery. We demonstrated that 6 month TGF-β1 treat- ment for chronic nerve injury significantly improved Schwann cell capacity to support axonal regeneration. When combined with forskolin, the effect was additive, as evidenced by a near doubling of regenerated axons proximal to the repair site. We showed that in vivo application of TGF-β1 and forskolin directly onto chronically injured nerves reactivated chronically denervated Schwann cells, induced their proliferation, and upregulated the expression of regeneration-associated proteins. The effect of TGF-β1 and forskolin on old nerve injuries is quite impressive and the treatment regiment appears to mediate a growth-supportive milieu in the injured peripheral nerves. In summary, TGF-β1 and forskolin treatment reactivates chronical- ly denervated Schwann cells and could potentially be used to extend and prolong the regenerative responses to promote axonal regeneration.

关键词： chronic nerve injuries transforming growth factor Schwann cells axonal regeneration regeneration-associatedproteins functional recovery

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AN OBSERVATION OF 1316 CASES OF HYSTERICAL paralysis TREATED BY ACUPUNCTURE

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Journal of Traditional Chinese Medicine 1987年第2期7卷 113-115页

作者：张振英袁玉民阎炳文田亚琴王伟范理铭 Hysterical paralysis Acupuncture Treatment center PLA 261 Hospital

Hysterical paralysis(HP)is commonly seenin the *** March 1957 to September1984,1316 cases of HP were treated by *** limbs returned to normal after1 to 2 needlings for a recovery rate of 97.8%.The clinical data,methods... 详细信息

关键词： AN OBSERVATION OF 1316 CASES OF HYSTERICAL paralysis TREATED BY ACUPUNCTURE

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Mechanism by which Rab5 promotes regeneration and functional recovery of zebrafish Mauthner axons

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Neural Regeneration Research 2025年第6期20卷 1816-1824页

作者： Jiantao Cui Yueru Shen Zheng Song Dinggang Fan Bing Hu center for Advanced Interdisciplinary Science and Biomedicine of IHM Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina

Rab5 is a GTPase protein that is involved in intracellular membrane trafficking. It functions by binding to various effector proteins and regulating cellular responses, including the formation of transport vesicles and their fusion with the cellular membrane. Rab5 has been reported to play an important role in the development of the zebrafish embryo;however, its role in axonal regeneration in the central nervous system remains unclear. In this study, we established a zebrafish Mauthner cell model of axonal injury using single-cell electroporation and two-photon axotomy techniques. We found that overexpression of Rab5 in single Mauthner cells promoted marked axonal regeneration and increased the number of intra-axonal transport vesicles. In contrast, treatment of zebrafish larvae with the Rab kinase inhibitor CID-1067700markedly inhibited axonal regeneration in Mauthner cells. We also found that Rab5 activated phosphatidylinositol 3-kinase(PI3K) during axonal repair of Mauthner cells and promoted the recovery of zebrafish locomotor function. Additionally, rapamycin, an inhibitor of the mechanistic target of rapamycin downstream of PI3K, markedly hindered axonal regeneration. These findings suggest that Rab5 promotes the axonal regeneration of injured zebrafish Mauthner cells by activating the PI3K signaling pathway.

关键词： axonal regeneration Mauthner cell nerve regeneration Rab5 zebrafish

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Treatment with analgesics after mouse sciatic nerve injury does not alter expression of wound healingassociated genes

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Neural Regeneration Research 2016年第1期11卷 144-149页

作者： Matt C.Danzi Dario Motti Donna L.Avison John L.Bixby Vance P.Lemmon The Miami Project to Cure paralysis University of MiamiLois Pope LIFE Center Department of Surgery Leonard M. Miller School of Medicine University of Miami Department of Neurological Surgery University of Miami Department of Molecular and Cellular Pharmacology University of Miami

Animal models of sciatic nerve injury are commonly used to study neuropathic pain as well as axon regeneration. Administration of post-surgical analgesics is an important consideration for animal welfare, but the actions of the analgesic must not interfere with the scientific goals of the experiment. In this study, we show that treatment with either buprenorphine or acetaminophen following a bilateral sciatic nerve crush surgery does not alter the expression in dorsal root ganglion（DRG） sensory neurons of a panel of genes associated with wound healing. These findings indicate that the post-operative use of buprenorphine or acetaminophen at doses commonly suggested by Institutional Animal Care and Use Committees does not change the intrinsic gene expression response of DRG neurons to a sciatic nerve crush injury, for many wound healing-associated genes. Therefore, administration of post-operative analgesics may not confound the results of transcriptomic studies employing this injury model.

关键词： acetaminophen analgesics axon buprenorphine dorsal root ganglia gene expression peripheral nerve injuries regeneration sciatic nerve wound healing

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Clinical characteristics of peripapillary hyperreflective ovoid mass-like structures in myopic children

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1292-1299页

作者： Lu Zhang Zuo-Hui-Zi Yi Xuan Jiang Gong-Peng Sun Fang Zhao Li Zhang Yi Xiang Chang-Zheng Chen Department of Ophthalmology the Central Hospital of WuhanTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430014Hubei ProvinceChina Eye center Renmin Hospital of Wuhan UniversityWuhan 430060Hubei ProvinceChina

AIM:To describe the characteristics of peripapillary hyperreflective ovoid mass-like structure(PHOMS)in myopic children and to investigate factors associated with ***:This retrospective observational study included 101 eyes of 101 children(age≤17y)with *** included patients underwent comprehensive clinical *** nerve canal parameters,including disc diameter,optic nerve head(ONH)tilt angle,and border tissue angle were measured using serial enhanced-depth imaging spectral-domain optical coherence tomography(EDI-OCT).Based on the optic disc drusen consortium’s definition of PHOMS,eyes were classified as PHOMS group and non-PHOMS *** was categorized according to ***:Sixty-seven(66.3%)eyes were found with *** PHOMS could only be detected by optical coherence tomography(OCT).Medium PHOMS could be seen with blurred optic disc borders corresponding to *** most frequent location of PHOMS was at the nasosuperior(91%,61 of 67 eyes)to ONH *** axial length and spherical equivalent were more myopic in the PHOMS group than in the non-PHOMS group(both P<0.001).ONH tilt angle was also significantly greater in PHOMS group than in non-PHOMS group[8.90(7.16-10.54)vs 3.93(3.09-5.25),P<0.001].Border tissue angle was significantly smaller in PHOMS group than in non-PHOMS group[29.70(20.90-43.81)vs 45.62(35.18-60.45),P<0.001].In the multivariable analysis,spherical equivalent(OR=3.246,95%CI=1.209-8.718,P=0.019)and ONH tilt angle(OR=3.275,95%CI=1.422-7.542,P=0.005)were significantly correlated with *** was no disc diameter associated with *** the linear regression analysis,border tissue angle was negatively associated with PHOMS height(β=-2.227,P<0.001).CONCLUSION:PHOMS is associated with optic disc tilt and optic disc nasal shift in *** diameter is not a risk factor for *** changes in ONH caused by axial elongation facilitated an understanding of the mechanism of PHOMS.

关键词： peripapillary hyperreflective ovoid masslike structure myopia optic disc edema enhanced-depth imaging spectral-domain optical coherence tomography

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Mental retardation,seizures and language delay caused by new SETD1B mutations:Three case reports

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World Journal of Clinical Cases 2024年第2期12卷 383-391页

作者： Le Ding Li-Wan Wei Tai-Song Li Jing Chen Department of Neurology Children’s Hospital of Nanjing Medical UniversityNanjing 210000Jiangsu ProvinceChina Chigene(Beijing)Translational Medical Research center Co.Ltd.Beijing 101111China

BACKGROUND The SETD1B gene is instrumental in human intelligence and nerve *** in the SETD1B gene have been linked in recent studies to neurodevelopmental disorders,seizures,and language *** SUMMARY This study aimed to analyze the clinical manifestations and treatment of three patients suffering from mental retardation,epilepsy,and language delay resulting from a new mutation in the SETD1B *** individuals with these symptoms were selected,and their clinical symptoms,gene test results,and treatment were *** article discusses the impact of the SETD1B gene mutation on patients and outlines the treatment *** the three patients(two females and one male,aged 8,4,and 1,respectively),all exhibited psychomotor retardation,attention deficit,and hyperactivity disorder,and two had *** treatment with sodium tripolyvalproate halted the seizures in the affected child,although mental development remained somewhat *** exome sequencing revealed new mutations in the SETD1B gene for all patients,specifically with c.5473C>T(***1825trp),c.4120C>T(***1374*,593),c.14_15insC(***5Hisfs*33).CONCLUSION Possessing the SETD1B gene mutation may cause mental retardation accompanied by seizures and language *** the exact mechanism is not fully understood,interventions such as drug therapy,rehabilitation training,and family support can assist patients in managing their symptoms and enhancing their quality of ***,genetic testing supplies healthcare providers with more precise diagnostic and therapeutic guidance,informs families about genetic disease risks,and contributes to understanding disease pathogenesis and drug research and development.

关键词： Neurodevelopmental disorder Seizure SETD1B gene Whole-exome sequencing New mutation Case report

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