keyword
MENU ▼
Read by QxMD icon Read
search

Axonal regeneration

keyword
https://www.readbyqxmd.com/read/28527111/human-placenta-derived-mesenchymal-stem-cells-loaded-on-linear-ordered-collagen-scaffold-improves-functional-recovery-after-completely-transected-spinal-cord-injury-in-canine
#1
Sufang Han, Zhifeng Xiao, Xing Li, Huan Zhao, Bin Wang, Zhixue Qiu, Zhi Li, Xin Mei, Bai Xu, Caixia Fan, Bing Chen, Jin Han, Yanzheng Gu, Huilin Yang, Qin Shi, Jianwu Dai
Traumatic spinal cord injury (SCI) is a major challenge in the clinic. In this study, we sought to examine the synergistic effects of linear ordered collagen scaffold (LOCS) and human placenta-derived mesenchymal stem cells (hPMSCs) when transplanted into completely transected beagle dogs. After 36 weeks observation, we found that LOCS+hPMSCs implants promoted better hindlimb locomotor recovery than was observed in the non-treatment (control) group and LOCS group. Histological analysis showed that the regenerated tissue after treatment was well integrated with the host tissue, and dramatically reduced the volume of cystic and chondroitin sulfate proteoglycans (CSPGs) expression...
May 16, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28522294/activating-transcription-factor-3-promotes-spinal-cord-regeneration-of-adult-zebrafish
#2
Lin-Fang Wang, Shu-Bing Huang, Hou-De Zhao, Chun-Jie Liu, Li Yao, Yan-Qin Shen
Zebrafish is an excellent model to study the mechanisms underlying successful central nervous system (CNS) regeneration. Previous study shows that activating transcription factor 3 (ATF3) promotes neurite outgrowth and is involved in optic nerve regeneration in zebrafish. Here, we used zebrafish model to investigate the role of ATF3 in regeneration following spinal cord injury (SCI). Quantitative polymerase chain reaction (qPCR) and in situ hybridization revealed that ATF3 mRNA levels increased at 12 h and 6 d following SCI...
May 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28518122/dorsal-root-ganglion-injection-and-dorsal-root-crush-injury-as-a-model-for-sensory-axon-regeneration
#3
Menghon Cheah, James W Fawcett, Melissa R Andrews
Achieving axon regeneration after nervous system injury is a challenging task. As different parts of the central nervous system (CNS) differ from each other anatomically, it is important to identify an appropriate model to use for the study of axon regeneration. By using a suitable model, we can formulate a specific treatment based on the severity of injury, the neuronal cell type of interest, and the desired spinal tract for assessing regeneration. Within the sensory pathway, DRG neurons are responsible for relaying sensory information from the periphery to the CNS...
May 3, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28514764/trim32-affects-the-recovery-of-motor-function-following-spinal-cord-injury-through-regulating-proliferation-of-glia
#4
Qiang Fu, Ming-Ming Zou, Jian-Wei Zhu, Yan Zhang, Wen-Jin Chen, Mei Cheng, Chun-Feng Liu, Quan-Hong Ma, Ru-Xiang Xu
Both the extrinsic environmental factors and intrinsic neuronal mechanisms limit the axonal regeneration after spinal cord injury (SCI). However, the underlying molecular mechanisms remain unclear. In the present study, we identify tripartite motif protein 32 (TRIM32), an E3 ubiquitin ligase, which is barely detected in glial cells in the normal uninjured spinal cord, exhibits strong expression in both astrocytes and microglia following SCI. We further observe that deficiency of TRIM32 results in increased numbers of astrocytes and microglia, which is accompanied by enhanced proliferation of both cells and increased secretion of interleukin (IL)-1 and IL-10...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28514330/-mri-morphometry-of-neuroplastic-changes-in-the-brain-after-conservative-treatment-of-traumatic-brachial-plexopathy
#5
S A Zhivolupov, E N Gnevyshev, A G Trufanov, L V Voronkov, A A Jurin, N A Rashidov, I N Samartsev, I D Poltavsky
AIM: To identify neuroplastic changes in the brain structures during treatment of traumatic axonotomy of the brachial plexus (the pathology of peripheral nervous system). MATERIAL AND METHODS: MRI morphometry of white and grey matter was studied in 62 patients with traumatic axonotomy of the brachial plexus. RESULTS: There were correlations between the thickness of sensorimotor cortex, morphometric parameters (volume, diffusion, fractional anisotropy) of subcortical formations (corticospinal tracts, the forceps minor), severity of neurological deficit and dynamics of clinical course depending on the therapeutic strategy...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28512649/purification-and-characterization-of-schwann-cells-from-adult-human-skin-and-nerve
#6
Jo Anne Stratton, Ranjan Kumar, Sarthak Sinha, Prajay Shah, Morgan Stykel, Yuval Shapira, Rajiv Midha, Jeff Biernaskie
Despite its modest capacity for regeneration, peripheral nervous system injury often results in significant long-term disability. Supplementing peripheral nervous system injury with autologous Schwann cells (SCs) may serve to rejuvenate the postinjury environment to enhance regeneration and ultimately improve functional outcomes. However, human nerve-derived SC (hN-SC) collection procedures require invasive surgical resection. Here, we describe the characterization of SCs from adult human skin (hSk-SCs) of four male donors ranging between 27 and 46 years old...
May 2017: ENeuro
https://www.readbyqxmd.com/read/28511287/generation-and-characterization-of-highly-purified-canine-schwann-cells-from-spinal-nerve-dorsal-roots-as-potential-new-candidates-for-transplantation-strategies
#7
Nicole Steffensen, Annika Lehmbecker, Ingo Gerhauser, Yimin Wang, Regina Carlson, Andrea Tipold, Wolfgang Baumgärtner, Veronika M Stein
Schwann cells (SCs) are promising candidates for transplantation-strategies in the central nervous system by promoting axonal regeneration. The dog represents a translational model for human spinal cord injury (SCI) for studies with new repair strategies after intervertebral disk herniation (IVDH). To overcome the necessity for an additional surgical procedure, for the first time a protocol for isolation, and purification of canine SCs from spinal-nerve-biopsies during standard hemilaminectomy in IVDH affected paraplegic dogs for potential transplantation was developed...
May 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28507996/effects-of-pulsed-electromagnetic-field-with-predatory-stress-on-functional-and-histological-index-of-injured-sciatic-nerve-in-rat
#8
Maryam Tasbih-Forosh, Leila Zarei, Ehsan Saboory, Mehran Bahrami-Bukani
OBJECTIVE: To assess the effect of combination of pulsed electromagnetic fields (PEMF) with predatory stress on transected sciatic nerve regeneration in rats. METHODS: In sham- operated group (SOG) the nerve was manipulated and left intact. The 10-mm rat sciatic nerve gap was created in rats. In transected group (Transected) nerve stumps were sutured to adjacent muscle and in vein graft group (VG) the gap was bridged using an inside-out vein graft. In VG/PEMF group the transected nerve was bridged using vein graft, phosphate buffered saline was administered into the graft and the whole body was exposed to PEMF...
April 2017: Bulletin of Emergency and Trauma
https://www.readbyqxmd.com/read/28506533/schwann-cell-precursors-from-human-pluripotent-stem-cells-as-a-potential-therapeutic-target-for-myelin-repair
#9
Han-Seop Kim, Jungwoon Lee, Da Yong Lee, Young-Dae Kim, Jae Yun Kim, Hyung Jin Lim, Sungmin Lim, Yee Sook Cho
Schwann cells play a crucial role in successful nerve repair and regeneration by supporting both axonal growth and myelination. However, the sources of human Schwann cells are limited both for studies of Schwann cell development and biology and for the development of treatments for Schwann cell-associated diseases. Here, we provide a rapid and scalable method to produce self-renewing Schwann cell precursors (SCPs) from human pluripotent stem cells (hPSCs), using combined sequential treatment with inhibitors of the TGF-β and GSK-3 signaling pathways, and with neuregulin-1 for 18 days under chemically defined conditions...
May 11, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28505619/bone-marrow-mesenchymal-stem-cell-transplantation-increases-gap-43-expression-via-erk1-2-and-pi3k-akt-pathways-in-intracerebral-hemorrhage
#10
Jianzhong Cui, Changmeng Cui, Ying Cui, Ran Li, Huaxin Sheng, Xiaohua Jiang, Yanxia Tian, Kaijie Wang, Junling Gao
BACKGROUND/AIMS: Intracerebral hemorrhage (ICH) occurs in hypertensive patients and results in high rates of mortality and disability. This study determined whether bone marrow mesenchymal stem cell (BMSC) transplantation affects axonal regeneration and examined the underlying mechanisms after the administration of PD98059 (p-ERK1/2 inhibitor) or/ and LY294002 (PI3K inhibitor). The hypothesis that was intended to be tested was that BMSC transplantation regulates the expression of growth-associated protein-43 (GAP-43) via the ERK1/2 and PI3K/Akt signaling pathways...
May 12, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28505206/effects-of-%C3%AE-tat1-and-hdac5-on-axonal-regeneration-in-adult-neurons
#11
Shen Lin, Noelle A Sterling, Ian P Junker, Courtney T Helm, George M Smith
The role of posttranslational modifications in axonal injury and regeneration has been widely studied but there has been little consensus over the mechanism by which each modification affects adult axonal growth. Acetylation is known to play an important role in a variety of neuronal functions and its homeostasis is controlled by two enzyme families: the Histone Deacetylases (HDACs) and Histone Acetyl Transferases (HATs). Recent studies show that HDAC5 deacetylates microtubules in the axonal cytoplasm as part of an injury-induced regeneration response, but little is known about how acetylation of microtubules plays a role...
2017: PloS One
https://www.readbyqxmd.com/read/28503131/editorial-myelin-mediated-inhibition-of-axonal-regeneration-past-present-and-future
#12
EDITORIAL
Sari Hannila, Wilfredo Mellado
No abstract text is available yet for this article.
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28501777/mir-140-bdnf-axis-regulates-normal-human-astrocyte-proliferation-and-lps-induced-il-6-and-tnf-%C3%AE-secretion
#13
Zhiming Tu, Yawei Li, Yuliang Dai, Lei Li, Guohua Lv, Ivan Chen, Bing Wang
Reactive astrocyte proliferation after spinal cord injury (SCI) contributes to glial scar formation that impedes axonal regeneration. The mechanisms underlying astrocyte proliferation upon injury remain partially understood. MicroRNAs (miRNAs) function as a major class of post-transcriptional gene expression regulators that participate in many biological processes. In this study, we focused on the functional role of miR-140 in normal human astrocyte (NHA) cell proliferation. Ectopic miR-140 expression significantly inhibited NHA cell viability and proliferation; miR-140 inhibition exerted the opposite function...
May 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28501505/sevoflurane-postconditioning-attenuates-reactive-astrogliosis-and-glial-scar-formation-after-ischemia-reperfusion-brain-injury
#14
Yong-Ming Zhu, Xue Gao, Yong Ni, Wei Li, Thomas A Kent, Shi-Gang Qiao, Chen Wang, Xiao-Xuan Xu, Hui-Ling Zhang
Cerebral ischemia leads to astrocyte's activation and glial scar formation. Glial scar can inhibit axonal regeneration during the recovery phase. It has demonstrated that sevoflurane has neuroprotective effects against ischemic stroke, but its effects on ischemia-induced formation of astrogliosis and glial scar are unknown. This study was designed to investigate the effect of sevoflurane postconditioning on astrogliosis and glial scar formation in ischemic stroke model both in vivo and in vitro. The results showed that 2...
May 10, 2017: Neuroscience
https://www.readbyqxmd.com/read/28501137/supinator-to-ulnar-nerve-transfer-via-in-situ-anterior-interosseous-nerve-bridge-to-restore-intrinsic-muscle-function-in-combined-proximal-median-and-ulnar-nerve-injury-a-novel-cadaveric-study
#15
Hamid Namazi, Shahin HajiVandi
BACKGROUND: In cases of high ulnar nerve palsy, result of nerve repair in term of intrinsic muscle recovery is unsatisfactory. Distal nerve transfer can diminish the regeneration time and improve the results. But, there was no perfect distal nerve transfer for restoring intrinsic hand function in combined proximal median and ulnar nerve injuries. This cadaveric study aims to evaluate the possibility and feasibility of supinator nerve transfer to motor branch of ulnar nerve (MUN). METHODS: Ten cadaveric upper limbs dissected to identify the location of the supinator branch, anterior interosseous nerve (AIN), and MUN...
May 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28495047/similar-clinical-pathological-and-genetic-features-in-chinese-patients-with-autosomal-recessive-and-dominant-charcot-marie-tooth-disease-type-2k
#16
Jun Fu, Shixu Dai, Yuanyuan Lu, Rui Wu, Zhaoxia Wang, Yun Yuan, He Lv
Mutations in the ganglioside-induced differentiation-associated protein 1 gene (GDAP1) cause rare subtypes of Charcot-Marie-Tooth disease (CMT2K and CMT4A). CMT2K is an axonal neuropathy while CMT4A is a demyelinating type. In a series of 169 Chinese CMT patients (79 CMT1, 52 CMT2 and 38 unclassified), four unrelated patients (2.37%) were identified with GDAP1 mutations, including two with autosomal recessive CMT2K (AR-CMT2K) and two dominant CMT2K (AD-CMT2K). All patients had disease onset before 5 years of age, and presented with muscle weakness, atrophy, and mild sensory disturbance in distal limbs...
April 20, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28493107/beyond-immunomodulation-the-regenerative-role-for-regulatory-t-cells-in-central-nervous-system-remyelination
#17
REVIEW
Veronique E Miron
Central nervous system regeneration after injury can occur in the form of remyelination, the reinstatement of myelin around axons which restores axon health and function. However, remyelination often fails in chronic neurological diseases, such as progressive multiple sclerosis. The lack of currently approved pro-remyelination therapies highlights the need to elucidate the cellular and molecular mechanisms underpinning this regenerative process. Whereas some T lymphocyte subsets such as Th1 and Th17 are implicated in inducing myelin injury, a recent study by Dombrowski et al...
May 11, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28489665/the-nogo-receptor-inhibits-proliferation-migration-and-axonal-extension-by-transcriptionally-regulating-wnk1-in-pc12-cells
#18
Tao Yang, Kai Zhao, Haifeng Shu, Xin Chen, Jingmin Cheng, Song Li, Ziyi Zhao, Yongqin Kuang, Sixun Yu
Neuronal regeneration and axonal regrowth mechanisms in the injured mammalian central nervous system are largely unknown. As part of a major pathway for inhibiting axonal regeneration, activated neuronal glycosylphosphatidylinositol-anchored Nogo receptor (NgR) interacts with LINGO-1 and p75NTR to form a complex at the cell surface. However, it was found in our previous report that upregulation of NgR stimulated by injury plays a key role in neuronal regeneration in the neonatal cortex freeze-lesion model, but its downstream signalling remains elusive...
May 6, 2017: Neuroreport
https://www.readbyqxmd.com/read/28485802/nogo-a-antibody-treatment-enhances-neuron-recovery-after-sciatic-nerve-transection-in-rats
#19
Z-W Zhang, J-J Jiang, M-C Luan, Z-J Ma, F Gao, S-J Yu
OBJECTIVE: The use of an antibody to block the neurite outgrowth inhibitor Nogo-A has been of great interest for promoting axonal recovery as a treatment for peripheral nerve injuries. The present study aimed to investigate the signaling pathway of p75 neurotrophin receptor (NTR) and Nogo receptor (NgR) in a sciatic nerve transection (SNT) rat model and evaluate the underlining mechanisms. MATERIALS AND METHODS: Seventy-five Sprague-Dawley (SD) rats were randomly divided into 3 groups (n=25), namely the sham group, sciatic nerve transection (model) group and Nogo-A-pAb group...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28484372/potential-involvement-of-snail-members-in-neuronal-survival-and-astrocytic-migration-during-the-gecko-spinal-cord-regeneration
#20
Tingting Shen, Yingjie Wang, Qing Zhang, Xue Bai, Sumei Wei, Xuejie Zhang, Wenjuan Wang, Ying Yuan, Yan Liu, Mei Liu, Xiaosong Gu, Yongjun Wang
Certain regenerative vertebrates such as fish, amphibians and reptiles are capable of regenerating spinal cord after injury. Most neurons of spinal cord will survive from the injury and regrow axons to repair circuits with an absence of glial scar formation. However, the underlying mechanisms of neuronal anti-apoptosis and glia-related responses have not been fully clarified during the regenerative process. Gecko has becoming an inspiring model to address spinal cord regeneration in amniotes. In the present study, we investigated the regulatory roles of Snail family members, the important transcriptional factors involved in both triggering of the cell migration and cell survival, during the spontaneous spinal cord regeneration...
2017: Frontiers in Cellular Neuroscience
keyword
keyword
1823
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"