Androgen regulates neuritin mRNA levels in an in vivo model of steroid-enhanced peripheral nerve regeneration.

Abstract:

:Following crush injury to the facial nerve in Syrian hamsters, treatment with androgens enhances axonal regeneration rates and decreases time to recovery. It has been demonstrated in vitro that the ability of androgen to enhance neurite outgrowth in motoneurons is dependent on neuritin-a protein that is involved in the re-establisment of neuronal connectivity following traumatic damage to the central nervous system and that is under the control of several neurotrophic and neuroregenerative factors--and we have hypothesized that neuritin is a mediator of the ability of androgen to increase peripheral nerve regeneration rates in vivo. Testosterone treatment of facial nerve-axotomized hamsters resulted in an approximately 300% increase in neuritin mRNA levels 2 days post-injury. Simultaneous treatment with flutamide, an androgen receptor blocker that is known to prevent androgen enhancement of nerve regeneration, abolished the ability of testosterone to upregulate neuritin mRNA levels. In a corroborative in vitro experiment, the androgen dihydrotestosterone induced an approximately 100% increase in neuritin mRNA levels in motoneuron-neuroblastoma cells transfected with androgen receptors, but not in cells without androgen receptors. These data confirm that neuritin is under the control of androgens, and suggest that neuritin is an important effector of androgen in enhancing peripheral nerve regeneration following injury. Given that neuritin has now been shown to be involved in responses to both central and peripheral injuries, and appears to be a common effector molecule for several neurotrophic and neurotherapeutic agents, understanding the neuritin pathway is an important goal for the clinical management of traumatic nervous system injuries.

journal_name

J Neurotrauma

journal_title

Journal of neurotrauma

authors

Fargo KN,Alexander TD,Tanzer L,Poletti A,Jones KJ

doi

10.1089/neu.2007.0466

subject

Has Abstract

pub_date

2008-05-01 00:00:00

pages

561-6

issue

5

eissn

0897-7151

issn

1557-9042

journal_volume

25

pub_type

杂志文章
  • Trajectory of Functional Independent Measurements during First Five Years after Moderate and Severe Traumatic Brain Injury.

    abstract::A better understanding of long-term functional recovery process for patients with traumatic brain injury (TBI) facilitates effective rehabilitations. The aim of this study was to classify and characterize patients with moderate-to-severe TBI based on their functional trajectories up to 5 years post-injury. The study i...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2017.5299

    authors: Lu J,Roe C,Sigurdardottir S,Andelic N,Forslund M

    更新日期:2018-07-15 00:00:00

  • Progression of Neuropathic Pain after Acute Spinal Cord Injury: A Meta-Analysis and Framework for Clinical Trials.

    abstract::The translation of therapeutic interventions to humans with spinal cord injury with the goal of promoting growth and repair in the central nervous system could, inadvertently, drive mechanisms associated with the development of neuropathic pain. A framework is needed to evaluate the probability that a therapeutic inte...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章,meta分析

    doi:10.1089/neu.2018.5960

    authors: Warner FM,Cragg JJ,Jutzeler CR,Finnerup NB,Werhagen L,Weidner N,Maier D,Kalke YB,Curt A,Kramer JLK

    更新日期:2019-05-01 00:00:00

  • Cardiometabolic risk factors in experimental spinal cord injury.

    abstract::Cardiometabolic risk factors are sorely underreported after spinal cord injury (SCI), despite the high prevalence of metabolic disorders and cardiovascular mortality in this population. Body-composition analysis and serum-lipid profiling are two assessments that are beginning to be more widely used to document metabol...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2009.1064

    authors: Inskip J,Plunet W,Ramer L,Ramsey JB,Yung A,Kozlowski P,Ramer M,Krassioukov A

    更新日期:2010-01-01 00:00:00

  • Neuronal and glial cell number in the hippocampus after experimental traumatic brain injury: analysis by stereological estimation.

    abstract::Fluid percussion (FP) brain injury causes spatial memory dysfunction in rats regardless of injury location (midline vs. lateral). Standard histological analysis of the injured brains shows hippocampal neuronal loss after lateral, but not midline FP injury. We have used the optical volume fractionator (OVF) stereologic...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/089771503770195786

    authors: Grady MS,Charleston JS,Maris D,Witgen BM,Lifshitz J

    更新日期:2003-10-01 00:00:00

  • Treatment of TBI with collagen scaffolds and human marrow stromal cells increases the expression of tissue plasminogen activator.

    abstract::This study examines the effects of combination therapy of collagen scaffolds and human marrow stromal cells (hMSCs) on the expression of tissue plasminogen activator (tPA) after traumatic brain injury (TBI) in rats. Adult male Wistar rats (n=48) were injured with controlled cortical impact and treated either with scaf...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2010.1694

    authors: Mahmood A,Qu C,Ning R,Wu H,Goussev A,Xiong Y,Irtenkauf S,Li Y,Chopp M

    更新日期:2011-07-01 00:00:00

  • Controlled cortical impact results in an extensive loss of dendritic spines that is not mediated by injury-induced amyloid-beta accumulation.

    abstract::The clinical manifestations that occur after traumatic brain injury (TBI) include a wide range of cognitive, emotional, and behavioral deficits. The loss of excitatory synapses could potentially explain why such diverse symptoms occur after TBI, and a recent preclinical study has demonstrated a loss of dendritic spine...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2013.2960

    authors: Winston CN,Chellappa D,Wilkins T,Barton DJ,Washington PM,Loane DJ,Zapple DN,Burns MP

    更新日期:2013-12-01 00:00:00

  • Repetitive intrathecal VEGF(165) treatment has limited therapeutic effects after spinal cord injury in the rat.

    abstract::Neuropathic pain and motor deficits are detrimental consequences of injury to the spinal cord. In experimental settings, numerous neuroprotective agents are being explored for their therapeutic benefits. Vascular endothelial growth factor (VEGF) is an interesting candidate molecule in this respect since it is not only...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2010.1484

    authors: van Neerven S,Joosten EA,Brook GA,Lambert CA,Mey J,Weis J,Marcus MA,Steinbusch HW,van Kleef M,Patijn J,Deumens R

    更新日期:2010-10-01 00:00:00

  • Relative Deficiency of Plasma A Disintegrin and Metalloprotease with Thrombospondin Type 1 Repeats 13 Activity and Elevation of Human Neutrophil Peptides in Patients with Traumatic Brain Injury.

    abstract::Traumatic microvascular injury (tMVI) is a universal endophenotype of traumatic brain injury (TBI) that is responsible for significant neurological morbidity and mortality. The mechanism underlying tMVI is not fully understood. The present study aims to determine plasma levels of von Willebrand factor (VWF), a disinte...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2018.5696

    authors: Kumar MA,Cao W,Pham HP,Raju D,Nawalinski K,Maloney-Wilensky E,Schuster J,Zheng XL

    更新日期:2019-01-15 00:00:00

  • Effects of hypothermia on cerebral autoregulatory vascular responses in two rodent models of traumatic brain injury.

    abstract::Traumatic brain injury (TBI) can trigger disturbances of cerebral pressure autoregulation that can translate into the generation of secondary insults and increased morbidity/mortality. Few therapies have been developed to attenuate the damaging consequences of disturbed autoregulatory control, although some suggest th...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2011.2278

    authors: Fujita M,Wei EP,Povlishock JT

    更新日期:2012-05-01 00:00:00

  • Altered NO function contributes to impairment of uPA and tPA cerebrovasodilation after brain injury.

    abstract::Urokinase (uPA) and tissue plasminogen activator (tPA) are serine proteases implicated in fibrinolysis, but their role in the regulation of the cerebrovascular response to brain trauma has not been investigated. This study was designed to (1) characterize the cerebrovascular activity of uPA and tPA, (2) investigate th...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2004.21.1204

    authors: Armstead WM,Cines DB,Al-Roof Higazi A

    更新日期:2004-09-01 00:00:00

  • Methylprednisolone for the Treatment of Patients with Acute Spinal Cord Injuries: A Systematic Review and Meta-Analysis.

    abstract::Previous meta-analyses of methylprednisolone (MPS) for patients with acute traumatic spinal cord injuries (TSCIs) have not addressed confidence in the quality of evidence used for pooled effect estimates, and new primary studies have been recently published. We aimed to determine whether MPS improves motor recovery an...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章,meta分析,评审

    doi:10.1089/neu.2015.4192

    authors: Evaniew N,Belley-Côté EP,Fallah N,Noonan VK,Rivers CS,Dvorak MF

    更新日期:2016-03-01 00:00:00

  • Clinical performance of NICE recommendations versus NCWFNS proposal in patients with mild head injury.

    abstract::Recommendations on treatment of patients with head injury were recently proposed by the National Institute for Clinical Excellence (NICE). We tested the clinical performance of NICE variables versus the proposal of the Neurotraumatology Committee of the World Federation of Neurosurgical Societies (NCWFNS). Over a 5-ye...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2005.22.1419

    authors: Fabbri A,Servadei F,Marchesini G,Dente M,Iervese T,Spada M,Vandelli A

    更新日期:2005-12-01 00:00:00

  • Transplantation of neural progenitor and stem cells: developmental insights may suggest new therapies for spinal cord and other CNS dysfunction.

    abstract::Multipotent neural progenitors and stem cells may integrate appropriately into the developing and degenerating central nervous system. They may also be effective in the replacement of genes, cells, and nondiffusible factors in either a widespread or a more circumscribed manner, depending on the therapeutic demands of ...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章,评审

    doi:10.1089/neu.1999.16.675

    authors: Park KI,Liu S,Flax JD,Nissim S,Stieg PE,Snyder EY

    更新日期:1999-08-01 00:00:00

  • Cognitive function following traumatic brain injury: effects of injury severity and recovery period in a parasagittal fluid-percussive injury model.

    abstract::Previous work in this laboratory has demonstrated that rats show substantial deficits on the cued and hidden versions of the Morris water maze, as well as an apparent time-dependent recovery over a period of months, following moderate parasagittal fluid-percussion (FP) injury. However, the longitudinal nature of those...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.1999.16.915

    authors: Sanders MJ,Dietrich WD,Green EJ

    更新日期:1999-10-01 00:00:00

  • Material properties of human infant skull and suture at high rates.

    abstract::Clinicians are often faced with the challenging task of distinguishing between accidental and inflicted pediatric head trauma. There is currently a disparity in the anecdotal case study literature as to what kinds of injuries can occur in children from low height falls. There is also a paucity of material property dat...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2006.23.1222

    authors: Coats B,Margulies SS

    更新日期:2006-08-01 00:00:00

  • Reversal of neuromotor and cognitive dysfunction in an enriched environment combined with multimodal early onset stimulation after traumatic brain injury in rats.

    abstract::This study was designed to investigate the additional benefits of a multimodal early onset stimulation (MEOS) paradigm when combined with enriched environment (EE) versus EE only and standard housing (SH) on the recovery after experimental traumatic brain injury (TBI). Male Sprague- Dawley rats were subjected to moder...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2005.22.772

    authors: Maegele M,Lippert-Gruener M,Ester-Bode T,Sauerland S,Schäfer U,Molcanyi M,Lefering R,Bouillon B,Neiss WF,Angelov DN,Klug N,McIntosh TK,Neugebauer EA

    更新日期:2005-07-01 00:00:00

  • Experimental traumatic brain injury induces a pervasive hyperanxious phenotype in rats.

    abstract::Mood disturbances, including depression and anxiety disorders, are common and disabling long-term sequelae of traumatic brain injury (TBI). These psychiatric conditions have generally been considered psychosocial consequences of the trauma, but neurobiological alterations and causes have also been implicated. Using a ...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2008.0641

    authors: Jones NC,Cardamone L,Williams JP,Salzberg MR,Myers D,O'Brien TJ

    更新日期:2008-11-01 00:00:00

  • Neuron-specific enolase serum levels after controlled cortical impact injury in the rat.

    abstract::The aim of this study was to investigate the time course and the correlation of neuron-specific enolase (NSE) serum levels to the severity of traumatic brain injury in rats. Sixty-five male Wistar rats were subjected to severe cortical impact injury (100 PSI, 2 mm deformation). Blood samples were drawn directly after ...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/089771501300227378

    authors: Woertgen C,Rothoerl RD,Brawanski A

    更新日期:2001-05-01 00:00:00

  • Validity and sensitivity to change of the extended Glasgow Outcome Scale in mild to moderate traumatic brain injury.

    abstract::Using a structured outcome interview, this study addressed the validity and sensitivity to change of the Glasgow Outcome Scale (GOS) and the Extended GOS (GOSE) in a prospective study of patients who sustained mild (n = 30) to moderate (n = 13) traumatic brain injury (TBI) or general trauma (n = 44). The patients were...

    journal_title:Journal of neurotrauma

    pub_type: 临床试验,杂志文章

    doi:10.1089/089771501750291819

    authors: Levin HS,Boake C,Song J,Mccauley S,Contant C,Diaz-Marchan P,Brundage S,Goodman H,Kotrla KJ

    更新日期:2001-06-01 00:00:00

  • Morphologic changes in cultured astrocytes after exposure to glutamate.

    abstract::Cultured astrocytes, exposed to glutamate at a dose that is generally neurotoxic in vitro (1 mM), exhibit transient swelling in the absence of cell death. In the present study, we further characterize this response by examining the distribution of intermediate filaments and evaluating cellular ultrastructure in primar...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.1992.9.255

    authors: Noble LJ,Hall JJ,Chen S,Chan PH

    更新日期:1992-10-01 00:00:00

  • tPA-S481A prevents neurotoxicity of endogenous tPA in traumatic brain injury.

    abstract::Traumatic brain injury (TBI) is associated with loss of autoregulation due to impaired responsiveness to cerebrovascular dilator stimuli, which leads to cerebral hypoperfusion and neuronal impairment or death. Upregulation of tissue plasminogen activator (tPA) post-TBI exacerbates loss of cerebral autoregulation and N...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2012.2328

    authors: Armstead WM,Riley J,Yarovoi S,Cines DB,Smith DH,Higazi AA

    更新日期:2012-06-10 00:00:00

  • Prostaglandins contribute to impaired angiotensin II-induced cerebral vasodilation after brain injury.

    abstract::This study characterized the effects of fluid percussion brain injury (FPI) on angiotensin II (AII)-induced cerebral vasodilation, determined the role of prostaglandins in such changes and evaluated the contribution of two subtypes of AII receptors (AT(1) and AT(2)) to the effects of AII on cerebrovascular regulation....

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/089771502320914688

    authors: Baranov D,Armstead WM

    更新日期:2002-11-01 00:00:00

  • Magnetic resonance imaging detects and predicts early brain injury after subarachnoid hemorrhage in a canine experimental model.

    abstract::The canine double hemorrhage model is an established model to study cerebral vasospasm, the late sequelae of subarachnoid hemorrhage (SAH). The present study uses magnetic resonance imaging (MRI) to examine the recently reported early brain injury after SAH. Double hemorrhage SAH modeling was obtained by injecting 0.5...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2008.0518

    authors: Jadhav V,Sugawara T,Zhang J,Jacobson P,Obenaus A

    更新日期:2008-09-01 00:00:00

  • The impact of co-morbidities on age-related differences in mortality after acute traumatic spinal cord injury.

    abstract::Despite the shift in demographics of spinal cord injury (SCI) due to an aging population, relatively little has been reported regarding the effect of age on outcomes after SCI. This study examines the potential confounding effect of co-morbidities on the age-related differences in the hospital mortality following acut...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2008.0764

    authors: Furlan JC,Kattail D,Fehlings MG

    更新日期:2009-08-01 00:00:00

  • Progressive atrophy and neuron death for one year following brain trauma in the rat.

    abstract::Although atrophic changes have been well described following traumatic brain injury (TBI) in humans, little is known concerning the mechanisms or progression of brain tissue loss. In the present study, we evaluated the temporal profile of histopathological changes following parasagittal fluid-percussion (FP) brain inj...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.1997.14.715

    authors: Smith DH,Chen XH,Pierce JE,Wolf JA,Trojanowski JQ,Graham DI,McIntosh TK

    更新日期:1997-10-01 00:00:00

  • Type I interferon inhibits astrocytic gliosis and promotes functional recovery after spinal cord injury by deactivation of the MEK/ERK pathway.

    abstract::Formation of a glial scar is one of the major obstacles to axonal growth after injury to the adult CNS. In this study, we have addressed this issue by focusing on reactive astrocytes in a mouse model of spinal cord injury (SCI). First, we attempted to identify profile changes in the expression of astrocytic gliosis 10...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2008.0646

    authors: Ito M,Natsume A,Takeuchi H,Shimato S,Ohno M,Wakabayashi T,Yoshida J

    更新日期:2009-01-01 00:00:00

  • L-arginine and free radical scavengers increase cerebral blood flow and brain tissue nitric oxide concentrations after controlled cortical impact injury in rats.

    abstract::To examine the mechanism of the increase in cerebral blood flow induced by L-arginine administration after traumatic brain injury, the cerebral hemodynamic effects of L-arginine, D-arginine, and the free radical scavengers superoxide dismutase (SOD) and catalase were compared in the controlled cortical impact injury m...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/08977150360517209

    authors: Cherian L,Robertson CS

    更新日期:2003-01-01 00:00:00

  • Formation of microparticles in the injured brain of patients with severe isolated traumatic brain injury.

    abstract::The potential pathophysiological role of circulating microparticles (MPs) has been recognized in various conditions, such as cardiovascular and thrombotic diseases. Traumatic brain injury (TBI) has a complex pathophysiology that involves coagulopathy and inflammation. We investigated endothelial-, platelet-, and leuko...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2013.3168

    authors: Nekludov M,Mobarrez F,Gryth D,Bellander BM,Wallen H

    更新日期:2014-12-01 00:00:00

  • Could a traumatic epidural hematoma on early computed tomography tell us about its future development? A multi-center retrospective study in China.

    abstract::Our aim for this study was to quantitatively develop an early epidural hematoma (EDH) natural evolutionary curve and assess association of the most common radiological signs of initially nonsurgical supratentorial EDHs on early computed tomography (CT), in addition to their CT time for EDH enlargement. We retrospectiv...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章,多中心研究

    doi:10.1089/neu.2013.3297

    authors: Xiao B,Ma MY,Duan ZX,Liu JG,Chen RP,Mao Q

    更新日期:2015-04-01 00:00:00

  • A New Risk Factor for Traumatic Spinal Cord Injury.

    abstract::Several behavioral factors such as violence, impulsivity, and alcohol-related problems are associated with traumatic spinal cord injury (TSCI). Such factors have been associated with inherently low neuronal serotonergic capacity that in turn is reflected in low activity of monoamine oxidase (MAO) as measured in platel...

    journal_title:Journal of neurotrauma

    pub_type: 杂志文章

    doi:10.1089/neu.2016.4462

    authors: Sabre L,Harro J,Eensoo D,Vaht M,Kabel V,Pakkanen M,Asser T,Kõrv J

    更新日期:2016-11-01 00:00:00