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https://www.readbyqxmd.com/read/28565771/erythropoietin-facilitates-the-recruitment-of-bone-marrow-mesenchymal-stem-cells-to-sites-of-spinal-cord-injury
#1
Jun Li, Weichun Guo, Min Xiong, Shuangjie Zhang, Heng Han, Jie Chen, Dan Mao, Hualong Yu, Yun Zeng
Despite the successes of bone marrow mesenchymal stem cell (BMSC) transplantation for the treatment of spinal cord injuries, only a small fraction of grafted cells migrate to the target areas. Therefore, there remains a need for more efficient strategies of BMSC delivery. The present study was designed to explore this. Rat models of spinal cord injury (SCI) were established and exposed to phosphate buffered saline (control), BMSCs or BMSCs + erythropoietin (EPO). Basso, Beattie and Bresnahan (BBB) locomotor scale and grid walk tests were then utilized to estimate neurological rehabilitation...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28540289/stem-cell-induced-biobridges-as-possible-tools-to-aid-neuroreconstruction-after-cns-injury
#2
REVIEW
Jea Y Lee, Kaya Xu, Hung Nguyen, Vivian A Guedes, Cesar V Borlongan, Sandra A Acosta
Notch-induced mesenchymal stromal cells (MSCs) mediate a distinct mechanism of repair after brain injury by forming a biobridge that facilitates biodistribution of host cells from a neurogenic niche to the area of injury. We have observed the biobridge in an area between the subventricular zone and the injured cortex using immunohistochemistry and laser capture. Cells in the biobridge express high levels of extracellular matrix metalloproteinases (MMPs), specifically MMP-9, which co-localized with a trail of MSCs graft...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28472013/reoxygenation-with-100-oxygen-following-hypoxia-in-mice-causes-apoptosis
#3
Yoshiro Nishimura, Masaaki Ueki, Masaki Imanishi, Shuhei Tomita, Masaki Ueno, Jun Morishita, Takashi Nishiyama
After hypoxia, reoxygenation with air is the consensus treatment for full-term neonates; however, the effect of hyperoxic reoxygenation of adults is unknown. The present study was designed to investigate the effects of reoxygenation with 100% oxygen after hypoxia on inflammation and apoptosis in mice. Eight-week-old mice were either subjected to hypoxia in 8% oxygen for 30 min or air served as controls. Following hypoxia, mice underwent reoxygenation for 30 min with 21% or 100% oxygen. Tumour Necrosis Factor-α (TNF-α), Interleukin-1β (IL-1β), caspase-3 and Brain Derived Neurotrophic Factor (BDNF) mRNA study and histopathological study were performed...
May 2, 2017: Shock
https://www.readbyqxmd.com/read/28411103/endogenous-regeneration-engineering-growth-factors-for-stroke
#4
REVIEW
Su Jing Chan, Christopher Love, Myron Spector, Simon M Cool, Victor Nurcombe, Eng H Lo
Despite the efforts in developing therapeutics for stroke, recombinant tissue plasminogen activator (rtPA) remains the only FDA approved drug for ischemic stroke. Regenerative medicine targeting endogenous growth factors has drawn much interest in the clinical field as it provides potential restoration for the damaged brain tissue without being limited by a narrow therapeutic window. To date, most of the translational studies using regenerative medicines have encountered problems and failures. In this review, we discuss the effects of some trophic factors which include of erythropoietin (EPO), brain derived neurotrophic factor (BDNF), granulocyte-colony stimulating factor (G-CSF), vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), epidermal growth factor (EGF) and heparin binding epidermal growth factor (HB-EGF) in experimental ischemic stroke models and elaborate the lost in translation of the candidate growth factors from bench to bedside...
July 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28293718/transfection-of-primary-brain-capillary-endothelial-cells-for-protein-synthesis-and-secretion-of-recombinant-erythropoietin-a-strategy-to-enable-protein-delivery-to-the-brain
#5
Annette Burkhart, Thomas Lars Andresen, Achim Aigner, Louiza Bohn Thomsen, Torben Moos
Treatment of chronic disorders affecting the central nervous system (CNS) is complicated by the inability of drugs to cross the blood-brain barrier (BBB). Non-viral gene therapy applied to brain capillary endothelial cells (BCECs) denotes a novel approach to overcome the restraints in this passage, as turning BCECs into recombinant protein factories by transfection could result in protein secretion further into the brain. The present study aims to investigate the possibility of transfecting primary rat brain endothelial cells (RBECs) for recombinant protein synthesis and secretion of the neuroprotective protein erythropoietin (EPO)...
March 14, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28273832/more-insight-into-bdnf-against-neurodegeneration-anti-apoptosis-anti-oxidation-and-suppression-of-autophagy
#6
REVIEW
Shang-Der Chen, Chia-Lin Wu, Wei-Chao Hwang, Ding-I Yang
In addition to its well-established neurotrophic action, brain-derived neurotrophic factor (BDNF) also possesses other neuroprotective effects including anti-apoptosis, anti-oxidation, and suppression of autophagy. We have shown before that BDNF triggers multiple mechanisms to confer neuronal resistance against 3-nitropropionic acid (3-NP)-induced mitochondrial dysfunction in primary rat cortical cultures. The beneficial effects of BDNF involve the induction of anti-oxidative thioredoxin with the resultant expression of anti-apoptotic B-cell lymphoma 2 (Bcl-2) as well as erythropoietin (EPO)-dependent stimulation of sonic hedgehog (SHH)...
March 3, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27995496/neuroprotective-effect-of-erythropoietin-on-phenylhydrazine-induced-hemolytic-hyperbilirubinemia-in-neonatal-rats
#7
Asli Memisoglu, Meltem Kolgazi, Akan Yaman, Elif Bahadir, Serap Sirvanci, Berrak Ç Yeğen, Eren Ozek
Neonatal unconjugated hyperbilirubinemia might cause severe bilirubin neurotoxicity in especially hemolytic conditions. The study aimed to elucidate the potential neuroprotective effects of erythropoietin (EPO) in hemolysis-induced hyperbilirubinemia. In newborn rats, hyperbilirubinemia secondary to hemolysis was induced by injecting with phenylhydrazine hydrochloride (PHZ) and rats were injected with either vehicle or EPO. At 54th hour of the PHZ injection, rats were decapitated. Serum levels of TNF-α, IL-1β, IL-10, brain-derived neurotrophic factor (BDNF) and S100-B and brain malondialdehyde, glutathione levels and myeloperoxidase activities were measured...
April 2017: Neurochemical Research
https://www.readbyqxmd.com/read/27618303/growth-factors-as-clinical-biomarkers-of-prognosis-and-diagnosis-in-psychiatric-disorders
#8
Alma Y Galvez-Contreras, Tania Campos-Ordonez, Veronica Lopez-Virgen, Jesus Gomez-Plascencia, Rodrigo Ramos-Zuniga, Oscar Gonzalez-Perez
The psychiatric disorders are one of the most disabling illnesses in the world and represent a major problem for public health. These disorders are characterized by neuroanatomical or biochemical changes and it has been suggested that such changes may be due to inadequate neurodevelopment. Diverse alterations in the gene expression and/or serum level of specific growth factors have been implicated in the etiology, symptoms and progression of some psychiatric disorders. Herein, we summarize the latest information regarding the role of brain-derived neurotrophic factor (BDNF), epidermal growth factor (EGF), fibroblast growth factor (FGF), Insulin-like growth factor (IGF-1), neuroregulin-1 (NGR-1), erythropoietin (EPO), vascular growth factor (VEGF), transforming growth factor beta (TGF-β), nerve growth factor (NGF) and others cytokines in the pathogenesis of schizophrenia, depression, bipolar and anxiety disorders...
December 2016: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/26802509/activation-of-migration-of-endogenous-stem-cells-by-erythropoietin-as-potential-rescue-for-neurodegenerative-diseases
#9
M I Khairallah, L A Kassem, N A Yassin, M A Gamal el Din, M Zekri, M Attia
UNLABELLED: Neurodegenerative disorders such as Alzheimer's disease (AD) are characterized by progressive cognitive dysfunction and memory loss. There is deposition of amyloid plaques in the brain and subsequent neuronal loss. Neuroinflammation plays a key role in the pathogenesis of AD. There is still no effective curative therapy for these patients. One promising strategy involves the stimulation of endogenous stem cells. This study investigated the therapeutic effect of erythropoietin (EPO) in neurogenesis, and proved its manipulation of the endogenous mesenchymal stem cells in model of lipopolysaccharide (LPS)-induced neuroinflammation...
March 2016: Brain Research Bulletin
https://www.readbyqxmd.com/read/26482461/erythropoietin-attenuates-the-memory-deficits-in-aging-rats-by-rescuing-the-oxidative-stress-and-inflammation-and-promoting-bdnf-releasing
#10
Zhankui Jia, Rui Xue, Shengli Ma, Jingjing Xu, Si Guo, Songchao Li, Erwei Zhang, Jun Wang, Jinjian Yang
Aging is a natural process accompanied with many disorders, including the memory decline. The underlying mechanisms for the age-related memory decline are complicated. Previous work suggested that oxidative stress, inflammatory disturbance, and the neurotropic absence play important roles in the age-related disorders. Thus, to seek a drug to target those abnormalities might be a possible protective approach for aging. Here, we reported that supplements with exogenous erythropoietin (EPO) for 4 weeks could partially rescue the spatial and fear memory impairments in aged rats...
October 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/26339375/epo-protects-m%C3%A3-ller-cell-under-high-glucose-state-through-bdnf-trkb-pathway
#11
Ping Wang, Fei Xia
Neurotrophic factor decreased in the early stage of diabetic retinal nerve cells. Neurons damage brain derived neurotrophic factor (BDNF) and receptor TrkB expression reduced. Erythropoietin (EPO) plays an important role in protecting early diabetic retinopathy. The rats were euthanized at 24 h after EPO vitreous injection and the retina was separated. HE staining was applied to observe the pathological tissue morphology. Immunohistochemistry, immunofluorescence, and Western blot were used to detect BDNF, TrkB, extracellular signal-regulated kinase (ERK), and glial fibrillary acidic portein (GFAP) expression...
2015: International Journal of Clinical and Experimental Pathology
https://www.readbyqxmd.com/read/26011424/the-effect-of-recombinant-erythropoietin-on-plasma-brain-derived-neurotrophic-factor-levels-in-patients-with-affective-disorders-a-randomised-controlled-study
#12
RANDOMIZED CONTROLLED TRIAL
Maj Vinberg, Kamilla Miskowiak, Pernille Hoejman, Maria Pedersen, Lars Vedel Kessing
UNLABELLED: The study aims to investigate the effect of repeated infusions of recombinant erythropoietin (EPO) on plasma brain derived neurotrophic factor (BDNF) levels in patients with affective disorders. In total, 83 patients were recruited: 40 currently depressed patients with treatment-resistant depression (TRD) (Hamilton Depression Rating Scale-17 items (HDRS-17) score >17) (study 1) and 43 patients with bipolar disorder (BD) in partial remission (HDRS-17 and Young Mania Rating Scale (YMRS) ≤ 14) (study 2)...
2015: PloS One
https://www.readbyqxmd.com/read/25942688/growth-factors-for-the-treatment-of-ischemic-brain-injury-growth-factor-treatment
#13
REVIEW
Amara Larpthaveesarp, Donna M Ferriero, Fernando F Gonzalez
In recent years, growth factor therapy has emerged as a potential treatment for ischemic brain injury. The efficacy of therapies that either directly introduce or stimulate local production of growth factors and their receptors in damaged brain tissue has been tested in a multitude of models for different Central Nervous System (CNS) diseases. These growth factors include erythropoietin (EPO), vascular endothelial growth factor (VEGF), brain-derived neurotrophic factor (BDNF), and insulin-like growth factor (IGF-1), among others...
April 30, 2015: Brain Sciences
https://www.readbyqxmd.com/read/25847024/erythropoietin-promotes-neural-plasticity-and-spatial-memory-recovery-in-fimbria-fornix-lesioned-rats
#14
William Almaguer-Melian, Daymara Mercerón-Martínez, Nancy Pavón-Fuentes, Esteban Alberti-Amador, Rilda Leon-Martinez, Nuris Ledón, Susana Delgado Ocaña, Jorge A Bergado Rosado
BACKGROUND: Erythropoietin (EPO) upregulates the mitogen activated protein kinase (MAPK) cascade, a central signaling pathway in cellular plastic mechanisms, and is critical for normal brain development. OBJECTIVE: We hypothesized that EPO could modulate the plasticity mechanisms supporting spatial memory recovery in fimbria-fornix-transected animals. METHODS: Fimbria-fornix was transected in 3 groups of rats. Seven days later, EPO was injected daily for 4 consecutive days within 10 minutes after training on a water maze task...
November 2015: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/25371017/differential-gene-expression-of-cytokines-and-neurotrophic-factors-in-nerve-and-skin-of-patients-with-peripheral-neuropathies
#15
Nurcan Üçeyler, Nadja Riediger, Waldemar Kafke, Claudia Sommer
Pathophysiologically relevant alterations in cytokine and neurotrophic factor levels have been reported in neuropathy subtypes. We characterized gene expression profiles of pro- and anti-inflammatory cytokines and neurotrophic factors in nerve and skin samples of patients with neuropathies of different etiologies. We prospectively studied 133 patients with neuropathies and compared data between subtypes and with healthy controls. All patients underwent sural nerve and/or skin punch biopsy at the lateral thigh and lower leg; controls received skin punch biopsies...
January 2015: Journal of Neurology
https://www.readbyqxmd.com/read/24725211/erythropoietin-protects-newborn-rat-against-sevoflurane-induced-neurotoxicity
#16
Lionel Pellegrini, Youssef Bennis, Lionel Velly, Isabelle Grandvuillemin, Pascale Pisano, Nicolas Bruder, Benjamin Guillet
INTRODUCTION: Recent data on newborn animals exposed to anesthetics have raised safety concerns regarding anesthesia practices in young children. Indeed, studies on rodents have demonstrated a widespread increase in brain apoptosis shortly after exposure to sevoflurane, followed by long-term neurologic impairment. In this context, we aimed to evaluate the protective effect of rh-EPO, a potent neuroprotective agent, in rat pups exposed to sevoflurane. MATERIAL AND METHODS: At postnatal day 7, 75 rat pups were allocated into three groups: SEVO + EPO (n = 27) exposed to sevoflurane 2 vol% (0...
July 2014: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/24648914/the-neuroprotective-roles-of-bdnf-in-hypoxic-ischemic-brain-injury
#17
Ai Chen, Li-Jing Xiong, Yu Tong, Meng Mao
Hypoxia-ischemia (H/I) brain injury results in various degrees of damage to the body, and the immature brain is particularly fragile to oxygen deprivation. Hypothermia and erythropoietin (EPO) have long been known to be neuroprotective in ischemic brain injury. Brain-derived neurotrophic factor (BDNF) has recently been recognized as a potent modulator capable of regulating a wide repertoire of neuronal functions. This review was based on studies concerning the involvement of BDNF in the protection of H/I brain injury following a search in PubMed between 1995 and December, 2011...
March 2013: Biomedical Reports
https://www.readbyqxmd.com/read/24312008/neuroplasticity-and-the-next-wave-of-antidepressant-strategies
#18
REVIEW
Shawn Hayley, Darcy Litteljohn
Depression is a common chronic psychiatric disorder that is also often co-morbid with numerous neurological and immune diseases. Accumulating evidence indicates that disturbances of neuroplasticity occur with depression, including reductions of hippocampal neurogenesis and cortical synaptogenesis. Improper trophic support stemming from stressor-induced reductions of growth factors, most notably brain derived neurotrophic factor (BDNF), likely drives such aberrant neuroplasticity. We posit that psychological and immune stressors can interact upon a vulnerable genetic background to promote depression by disturbing BDNF and neuroplastic processes...
2013: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/24262165/promises-of-novel-multi-target-neuroprotective-and-neurorestorative-drugs-for-parkinson-s-disease
#19
REVIEW
Moussa B H Youdim, Lana Kupershmidt, Tamar Amit, Orly Weinreb
The cascade of neurotoxic events involved in neuronal degeneration suggests that it is naive to think mono-target drugs can induce disease modification by slowing the process of neurodegeneration in Parkinson's disease (PD). Employing the pharmacophore of rasagiline (N-propargyl-1-R-aminoindan), we have developed a series of novel multi-target neuroprotective drugs, including: (A) drugs [ladostigil, TV-3326 (N-propargyl-3R-aminoindan-5yl)-ethyl methylcarbamate)] with both cholinesterase-butyrylesterase (Ch-BuE) and brain-selective monamine oxidase-AB (MAO-AB) inhibitory activities and (B) iron chelator-radical scavenging drugs (M30) possessing brain-selective MAO-AB inhibitor activity and the neuroprotective-neurorescue propargylamine moiety of rasagiline...
January 2014: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/24134405/single-dose-recombinant-erythropoietin-versus-moderate-hypothermia-for-neonatal-hypoxic-ischemic-encephalopathy-in-low-resource-settings
#20
RANDOMIZED CONTROLLED TRIAL
M Sami El Shimi, Hisham A Awad, Sahar M A Hassanein, Ghada I Gad, Safaa S Imam, Hebatallah A Shaaban, Mohamed O El Maraghy
OBJECTIVE: To determine the safety and efficacy of single dose systemic recombinant human erythropoietin (rEPO) in neonates with perinatal hypoxic Ischemic Encephalopathy (HIE), and its effect on serum brain-derived neurotrophic factor (BDNF) and neuron-specific enolase (NSE). METHODS: Forty-five full-term neonates; 30 with perinatal HIE and 15 controls were studied. HIE neonates were randomized into three intervention groups (first 6 h of life): 10 received single subcutaneous 1500 U/kg rEPO at day-1, 10 subjected to hypothermia for 72 h and 10 received supportive care...
September 2014: Journal of Maternal-fetal & Neonatal Medicine
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