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Bi W, Mu X, Li Y, Sun Q, Xiang L, Hu M, Liu H. Delivery of neurotrophin-3 by RVG-Lamp2b-modified mesenchymal stem cell-derived exosomes alleviates facial nerve injury. Hum Cell 2024:10.1007/s13577-024-01086-7. [PMID: 38858338 DOI: 10.1007/s13577-024-01086-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 04/24/2024] [Indexed: 06/12/2024]
Abstract
We aim to investigate the effect of RVG-Lamp2b-modified exosomes (exos) loaded with neurotrophin-3 (NT-3) on facial nerve injury. Exos were collected from control cells (Ctrl Exo) or bone marrow mesenchymal stem cells co-transfected with RVG-Lamp2b and NT-3 plasmids (RVG-NT-3 Exo) by gradient centrifugation and identified by western blotting, transmission electron microscopy, and nanoparticle tracking analysis. Effect of RVG-NT-3 Exo on oxidative stress damage was determined by analysis of the morphology, viability, and ROS production of neurons. Effect of RVG-NT-3 Exo on facial nerve axotomy (FNA) was determined by detecting ROS production, neuroinflammatory reaction, microglia activation, facial motor neuron (FMN) death, and myelin sheath repair. Loading NT-3 and modifying with RVG-Lamp2b did not alter the properties of the exos. Moreover, RVG-NT-3 Exo could effectively target neurons to deliver NT-3. Treatment with RVG-NT-3 Exo lowered H2O2-induced oxidative stress damage in primary neurons and Nsc-34 cells. RVG-NT-3 Exo treatment significantly decreased ROS production, neuroinflammatory response, FMN death, and elevated microglia activation and myelin sheath repair in FNA rat models. Our findings suggested that RVG-NT-3 Exo-mediated delivery of NT-3 is effective for the treatment of facial nerve injury.
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Affiliation(s)
- Wenting Bi
- Department of Stomatology, Beijing Hospital of Integrated Traditional Chinese and Western Medicine, Beijing, 100000, China
| | - Xiaodan Mu
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100000, China
| | - Yongfeng Li
- Department of Stomatology, School of Clinical Medicine, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, 102200, China
| | - Qingyan Sun
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - Lei Xiang
- Beijing Research Institute of Traumatology and Orthopaedics, Beijing, 102200, China
| | - Min Hu
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853, China
| | - Huawei Liu
- Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, No.28 Fuxing Road, Haidian District, Beijing, 100853, China.
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Del Pilar C, Garrido-Matilla L, Del Pozo-Filíu L, Lebrón-Galán R, Arias RF, Clemente D, Alonso JR, Weruaga E, Díaz D. Intracerebellar injection of monocytic immature myeloid cells prevents the adverse effects caused by stereotactic surgery in a model of cerebellar neurodegeneration. J Neuroinflammation 2024; 21:49. [PMID: 38355633 PMCID: PMC10867997 DOI: 10.1186/s12974-023-03000-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/18/2023] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Myeloid-derived suppressor cells (MDSCs) constitute a recently discovered bone-marrow-derived cell type useful for dealing with neuroinflammatory disorders. However, these cells are only formed during inflammatory conditions from immature myeloid cells (IMCs) that acquire immunosuppressive activity, thus being commonly gathered from diseased animals. Then, to obtain a more clinically feasible source, we characterized IMCs directly derived from healthy bone marrow and proved their potential immunosuppressive activity under pathological conditions in vitro. We then explored their neuroprotective potential in a model of human cerebellar ataxia, the Purkinje Cell Degeneration (PCD) mouse, as it displays a well-defined neurodegenerative and neuroinflammatory process that can be also aggravated by invasive surgeries. METHODS IMCs were obtained from healthy bone marrow and co-cultured with activated T cells. The proliferation and apoptotic rate of the later were analyzed with Tag-it Violet. For in vivo studies, IMCs were transplanted by stereotactic surgery into the cerebellum of PCD mice. We also used sham-operated animals as controls of the surgical effects, as well as their untreated counterparts. Motor behavior of mice was assessed by rotarod test. The Purkinje cell density was measured by immunohistochemistry and cell death assessed with the TUNEL technique. We also analyzed the microglial phenotype by immunofluorescence and the expression pattern of inflammation-related genes by qPCR. Parametric tests were applied depending on the specific experiment: one or two way ANOVA and Student's T test. RESULTS IMCs were proven to effectively acquire immunosuppressive activity under pathological conditions in vitro, thus acting as MDSCs. Concerning in vivo studios, sham-operated PCD mice suffered detrimental effects in motor coordination, Purkinje cell survival and microglial activation. After intracranial administration of IMCs into the cerebellum of PCD mice, no special benefits were detected in the transplanted animals when compared to untreated mice. Nonetheless, this transplant almost completely prevented the impairments caused by the surgery in PCD mice, probably by the modulation of the inflammatory patterns. CONCLUSIONS Our work comprise two main translational findings: (1) IMCs can be directly used as they behave as MDSCs under pathological conditions, thus avoiding their gathering from diseased subjects; (2) IMCs are promising adjuvants when performing neurosurgery.
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Affiliation(s)
- Carlos Del Pilar
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain
- Institute of Biomedical Research of Salamanca, IBSAL, Salamanca, Spain
| | - Lucía Garrido-Matilla
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain
- Departamento de Psicobiología, Facultad de Psicología, Universidad Nacional de Educación a Distancia (UNED), Madrid, Spain
| | - Lucía Del Pozo-Filíu
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain
- Translational Stroke Laboratory (TREAT), Clinical Neurosciences Research Laboratory (LINC), Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Rafael Lebrón-Galán
- Neuroimmuno-Repair Group, Hospital Nacional de Parapléjicos-SESCAM, Finca La Peraleda s/n, 45004, Toledo, Spain
- Hospital Universitario de Toledo, Avd. Río Guadiana, s/n, 45007, Toledo, Spain
| | - Raúl F Arias
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain
- Institute of Biomedical Research of Salamanca, IBSAL, Salamanca, Spain
| | - Diego Clemente
- Neuroimmuno-Repair Group, Hospital Nacional de Parapléjicos-SESCAM, Finca La Peraleda s/n, 45004, Toledo, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Carlos III Health Institute, Av. Monforte de Lemos, 3-5, 28029, Madrid, Spain
| | - José Ramón Alonso
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain
- Institute of Biomedical Research of Salamanca, IBSAL, Salamanca, Spain
| | - Eduardo Weruaga
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain.
- Institute of Biomedical Research of Salamanca, IBSAL, Salamanca, Spain.
| | - David Díaz
- Institute for Neuroscience of Castile and Leon, INCyL, Universidad de Salamanca, C/Pintor Fernando Gallego 1, 37007, Salamanca, Spain.
- Institute of Biomedical Research of Salamanca, IBSAL, Salamanca, Spain.
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Wang C, Huang Y, Gong Y, Wu M, Jiang L, Dang B. Tetramethylpyrazine protects mitochondrial function by up-regulation of TFAM and inhibition of neuronal apoptosis in a rat model of surgical brain injury. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2024; 27:352-359. [PMID: 38333750 PMCID: PMC10849202 DOI: 10.22038/ijbms.2023.72947.15862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/26/2023] [Indexed: 02/10/2024]
Abstract
Objectives Mitochondrial dysfunction caused by mitochondrial DNA (mtDNA) damage and mutation is widely accepted as one of the pathological processes of neurodegenerative diseases. As an mtDNA binding protein, mitochondrial transcription factor A (TFAM) maintains the integrity of mtDNA through transcription, replication, nucleoid formation, damage perception, and DNA repair. In recent works, the overexpression of TFAM increased the mtDNA copy count, promoted mitochondrial function, and improved the neurological dysfunction of neurodegenerative diseases. The role of TFAM in neurodegenerative diseases has been well explained. However, the role of TFAM after surgical brain injury (SBI) has not been studied. In this work, we aimed to study the role of TFAM in the brain after SBI and its mechanism of action. Materials and Methods One hour after the occurrence of SBI, tetramethylpyrazine (TMP) was injected into the abdominal cavity of rats, and the brain was collected 48 hr later for testing. The evaluation included neurobehavioral function test, brain water content measurement, immunofluorescence, western blot, TUNEL staining, FJC staining, ROS test, and ATP test. Results After SBI, the content of TFAM on the ipsilateral side increased and reached a peak at about 48 hr. After intraperitoneal injection of TMP in rats, 48 hr after SBI, the concentration of TFAM, Bcl-2, and adenosine triphosphate (ATP) increased; the content of caspase-3, reactive oxygen species (ROS), and cerebral edema decreased; and the nerve function significantly improved. Conclusion TMP inhibited cell apoptosis after SBI in rats by up-regulating TFAM and protecting brain tissues.
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Affiliation(s)
- Chaoyu Wang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
- These authors contributed eqully to this work
| | - Yaqian Huang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
- These authors contributed eqully to this work
| | - Yating Gong
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Muyao Wu
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Lei Jiang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Baoqi Dang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
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Yagubova SS, Chernyshevskaya MA, Ostrovskaya RU, Gudasheva TA, Seredenin SB. Antidiabetic Effect of a New Original NT-3 Dipeptide Mimetic. DOKL BIOCHEM BIOPHYS 2023; 512:241-244. [PMID: 38093123 DOI: 10.1134/s1607672923700357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 12/18/2023]
Abstract
It was previously established that the original dipeptide mimetic of the 4th loop of NT-3, hexamethylenediamide bis-(N-monosuccinyl-L-asparaginyl-L-asparagine) (GTS-301), has a pronounced neuroprotective effect in vitro at concentrations of 10-5-10-12 М. In the present study, experiments on the streptozotocin-induced diabetes model in C57Bl/6 mice showed that GTS-301, when administered intraperitoneally for 32 days at doses of 0.1 and 0.5 mg/kg, has antidiabetic activity manifested in a reduction of hyperglycemia and polydipsia and in an increase in animal survival. The results obtained confirm the concept of the similarity of neurochemical mechanisms underlying the regulation of functions of neurons and β-cells.
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Affiliation(s)
- S S Yagubova
- Zakusov Research Institute of Pharmacology, Moscow, Russia.
| | | | | | - T A Gudasheva
- Zakusov Research Institute of Pharmacology, Moscow, Russia
| | - S B Seredenin
- Zakusov Research Institute of Pharmacology, Moscow, Russia
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Gu HP, Wu XF, Gong YT, Mu-Yao Wu, Shi MY, Sun YM, Dang BQ, Chen G. RGFP966 exerts neuroprotective effect via HDAC3/Nrf2 pathway after surgical brain injury in rats. Heliyon 2023; 9:e18160. [PMID: 37539293 PMCID: PMC10395478 DOI: 10.1016/j.heliyon.2023.e18160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 05/29/2023] [Accepted: 07/10/2023] [Indexed: 08/05/2023] Open
Abstract
Histone deacetylase 3 (HDAC3) restores chromatin nucleosomes to a transcriptional repression state, thereby inhibiting gene expression. Studies have found that HDAC3 expression is upregulated in a variety of pathological states of the central nervous system and related to its neurotoxicity. However, the role of HDAC3 in surgical brain injury (SBI) has not been thoroughly explored. OBJECTIVE To observe the role of HDAC3 in SBI and the outcome of SBI after its suppression. METHODS Rat SBI model was used, and intraperitoneal injection of RGFP966 (HDAC3 specific inhibitor) was used to detect the changes of HDAC3 expression and neuronal apoptosis indexes in the surrounding cortex of SBI rats, and the cerebral edema and neurological outcome of rats were observed. RESULTS The expression of HDAC3 in the peripheral cortex of SBI rats was increased, and RGFP966 inhibited the upregulation of HDAC3 and saved the nerve cells around the damaged area. In addition, RGFP966 increased the expression of anti-oxidative stress proteins such as heme oxygenase-1 (HO-1) and superoxide dismutase 2 (SOD2). At the same time, the expression of apoptotic marker protein cleaved-caspase-3 (cle-caspase-3) was decreased, while the expression level of apoptotic protective marker protein B-cell lymphoma 2 (Bcl-2) was increased. In addition, this research demonstrated that in the RGFP966 rat SBI model, the expression level of antioxidant modifier nuclear factor-erythroid 2-related factor 2 (Nrf2) was increased. CONCLUSION RGFP966 might activate HDAC3/Nrf2 signaling pathway by inhibiting HDAC3, regulated oxidative stress and nerve cell apoptosis induced by SBI in rat SBI model, reduced brain edema, and had a protective effect on nerve injury. It might be a potential target of SBI pathology.
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Affiliation(s)
- Hai-Ping Gu
- Department of Neurology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Xiao-Feng Wu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ya-Ting Gong
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Mu-Yao Wu
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Meng-Ying Shi
- Department of Anesthesiology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Ya-ming Sun
- Department of Neurology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Bao-Qi Dang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
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Niu Y, Du SZ, He R. TNF-α interference ameliorates brain damage in neonatal hypoxic-ischemic encephalopathy rats by regulating the expression of NT-3 and TRKC. IBRAIN 2023; 9:381-389. [PMID: 38680513 PMCID: PMC11045181 DOI: 10.1002/ibra.12089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 01/06/2023] [Accepted: 01/13/2023] [Indexed: 05/01/2024]
Abstract
The aim of this study is to explore the effect of tumor necrosis factor-α (TNF-α) inhibition in rats with neonatal hypoxic-ischemic encephalopathy (HIE) and ascertain the relevant signaling pathways. The Zea-Longa score was used to evaluate the neurological function of the rats. ImageJ was used for quantification of the brain edema volume. Triphenyl tetrazolium chloride (TTC) staining of brain tissue was performed 24 h after hypoxic-ischemic (HI) to detect right brain infarction. The expression of TNF-α was detected by real-time quantitative polymerase chain reaction (RT-qPCR). Immunofluorescence staining was used to identify the localization of TNF-α; Then, the effective shRNA fragment of TNF-α was used to validate the role of TNF-α in HIE rats, and the change of neurotrofin-3 (NT-3) and tyrosine kinase receptor-C (TRKC) was examined after TNF-α-shRNA lentivirus transfection to determine downstream signaling associated with TNF-α. Protein interaction analysis was carried out to predict the links among TNF-α, NT-3, and TRKC. Cerebral edema volume and infarction increased in the right brain after the HI operation. The Zea-Longa score significantly increased within 24 h after the HI operation. The relative expression of TNF-α was upregulated after the HI operation. TNF-α was highly expressed in the right hippocampus post HI through immunofluorescence staining. Bioinformatics analysis found a direct or an indirect link among TNF-α, NT-3, and TRKC. Moreover, the interference of TNF-α increased the expression of NT-3 and TRKC. TNF-α interference might alleviate brain injury in HIE by upregulating NT-3 and TRKC.
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Affiliation(s)
- Yong‐Min Niu
- Institute of NeuroscienceKunming Medical UniversityKunmingChina
| | - Steven Z. Du
- Department of Integrative BiologyUniversity of Wisconsin‐MadisonMadisonWisconsinUSA
| | - Rong He
- Animal Zoology DepartmentKunming Medical UniversityKunmingChina
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Neurotrophic Factors as Regenerative Therapy for Neurodegenerative Diseases: Current Status, Challenges and Future Perspectives. Int J Mol Sci 2023; 24:ijms24043866. [PMID: 36835277 PMCID: PMC9968045 DOI: 10.3390/ijms24043866] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 01/25/2023] [Accepted: 02/06/2023] [Indexed: 02/17/2023] Open
Abstract
Neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), multiple sclerosis (MS), spinal cord injury (SCI), and amyotrophic lateral sclerosis (ALS), are characterized by acute or chronic progressive loss of one or several neuronal subtypes. However, despite their increasing prevalence, little progress has been made in successfully treating these diseases. Research has recently focused on neurotrophic factors (NTFs) as potential regenerative therapy for neurodegenerative diseases. Here, we discuss the current state of knowledge, challenges, and future perspectives of NTFs with a direct regenerative effect in chronic inflammatory and degenerative disorders. Various systems for delivery of NTFs, such as stem and immune cells, viral vectors, and biomaterials, have been applied to deliver exogenous NTFs to the central nervous system, with promising results. The challenges that currently need to be overcome include the amount of NTFs delivered, the invasiveness of the delivery route, the blood-brain barrier permeability, and the occurrence of side effects. Nevertheless, it is important to continue research and develop standards for clinical applications. In addition to the use of single NTFs, the complexity of chronic inflammatory and degenerative diseases may require combination therapies targeting multiple pathways or other possibilities using smaller molecules, such as NTF mimetics, for effective treatment.
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Omar NA, Kumar J, Teoh SL. Neurotrophin-3 and neurotrophin-4: The unsung heroes that lies behind the meninges. Neuropeptides 2022; 92:102226. [PMID: 35030377 DOI: 10.1016/j.npep.2022.102226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 12/06/2021] [Accepted: 01/04/2022] [Indexed: 11/17/2022]
Abstract
Neurotrophin is a growth factor that regulates the development and repair of the nervous system. From all factors, two pioneer groups, the nerve growth factor (NGF) and brain derived neurotrophic factor (BDNF), have been widely explored for their role in disease pathogenesis and potential use as therapeutic agents. Nonetheless, neurotrophin-3 (NT3) and neurotrophin-4 (NT4) also have promising potential, albeit less popular than their counterparts. This review focuses on the latter two factors and their roles in the pathogenesis of brain disorders and potential therapies. An extensive literature search of NT3 and NT4 with their receptors, the TrkB and TrkC on the nervous system were extracted and analyzed. We found that NT3 and NT4 are not only involved in the pathogenesis of some neurodegenerative diseases, but also have promising therapeutic potential on injury- and vascular-related nervous system disease, neuropsychiatry, neurodegeneration and peripheral nerve diseases. In conclusion, the role of NT3 and NT4 should be further emphasized, and more studies could be explored on the potential use of these neurotrophins in the human study.
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Affiliation(s)
- Noor Azzizah Omar
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical Centre, Bandar Tun Razak, 56000 Kuala Lumpur, Malaysia; Department of Medical Sciences, Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia, 71800 Nilai, Negeri Sembilan, Malaysia.
| | - Jaya Kumar
- Department of Physiology, Universiti Kebangsaan Malaysia Medical Centre, Bandar Tun Razak, 56000 Kuala Lumpur, Malaysia.
| | - Seong Lin Teoh
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical Centre, Bandar Tun Razak, 56000 Kuala Lumpur, Malaysia.
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Lin PH, Kuo LT, Luh HT. The Roles of Neurotrophins in Traumatic Brain Injury. LIFE (BASEL, SWITZERLAND) 2021; 12:life12010026. [PMID: 35054419 PMCID: PMC8780368 DOI: 10.3390/life12010026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/18/2021] [Accepted: 12/21/2021] [Indexed: 02/08/2023]
Abstract
Neurotrophins are a collection of structurally and functionally related proteins. They play important roles in many aspects of neural development, survival, and plasticity. Traumatic brain injury (TBI) leads to different levels of central nervous tissue destruction and cellular repair through various compensatory mechanisms promoted by the injured brain. Many studies have shown that neurotrophins are key modulators of neuroinflammation, apoptosis, blood–brain barrier permeability, memory capacity, and neurite regeneration. The expression of neurotrophins following TBI is affected by the severity of injury, genetic polymorphism, and different post-traumatic time points. Emerging research is focused on the potential therapeutic applications of neurotrophins in managing TBI. We conducted a comprehensive review by organizing the studies that demonstrate the role of neurotrophins in the management of TBI.
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Affiliation(s)
- Ping-Hung Lin
- Department of Medical Education, School of Medicine, National Taiwan University, Taipei 100, Taiwan;
| | - Lu-Ting Kuo
- Division of Neurosurgery, Department of Surgery, National Taiwan University Hospital, Taipei 100, Taiwan;
| | - Hui-Tzung Luh
- Department of Neurosurgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City 235, Taiwan
- Taipei Neuroscience Institute, Taipei Medical University, New Taipei City 235, Taiwan
- Graduate Institute of Clinical Medicine, National Taiwan University, Taipei 100, Taiwan
- Correspondence: ; Tel.: +886-956279587
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Zhang JH. Robot-assisted surgery: An emerging minimally invasive surgery method for intracerebral hemorrhage. BRAIN HEMORRHAGES 2021. [DOI: 10.1016/j.hest.2021.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Moss LD, Sode D, Patel R, Lui A, Hudson C, Patel NA, Bickford PC. Intranasal delivery of exosomes from human adipose derived stem cells at forty-eight hours post injury reduces motor and cognitive impairments following traumatic brain injury. Neurochem Int 2021; 150:105173. [PMID: 34453976 PMCID: PMC8511339 DOI: 10.1016/j.neuint.2021.105173] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/18/2021] [Accepted: 08/24/2021] [Indexed: 12/14/2022]
Abstract
The neuroprotective role of human adipose-derived stems cells (hASCs) has raised great interest in regenerative medicine due to their ability to modulate their surrounding environment. Our group has demonstrated that exosomes derived from hASC (hASCexo) are a cell-free regenerative approach to long term recovery following traumatic brain injury (TBI). Previously, we demonstrated the efficacy of exosome treatment with intravenous delivery at 3 h post TBI in rats. Here, we show efficacy of exosomes through intranasal delivery at 48 h post TBI in mice lengthening the therapeutic window of treatment and therefore increasing possible translation to clinical studies. Our findings demonstrate significant recovery of motor impairment assessed by an elevated body swing test in mice treated with exosomes containing MALAT1 compared to both TBI mice without exosomes and exosomes depleted of MALAT1. Significant cognitive improvement was seen in the reversal trial of 8 arm radial arm water maze in mice treated with exosomes containing MALAT1. Furthermore, cortical damage was significantly reduced in mice treated with exosomes containing MALAT1 as well as decreased MHCII+ staining of microglial cells. Mice without exosomes or treated with exosomes depleted of MALAT1 did not show similar recovery. Results demonstrate both inflammation related genes and NRTK3 (TrkC) are target genes modulated by hASC exosomes and further that MALAT1 in hASC exosomes regulates expression of full length TrkC thereby activating the MAPK pathway and promoting recovery. Exosomes are a promising therapeutic approach following TBI with a therapeutic window of at least 48 h and contain long noncoding RNA's, specifically MALAT1 that play a vital role in the mechanism of action.
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Affiliation(s)
- Lauren D Moss
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Derek Sode
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Rekha Patel
- James A. Haley Veterans Hospital, Research Service, Tampa, FL, USA
| | - Ashley Lui
- Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, USA
| | - Charles Hudson
- James A. Haley Veterans Hospital, Research Service, Tampa, FL, USA
| | - Niketa A Patel
- James A. Haley Veterans Hospital, Research Service, Tampa, FL, USA; Department of Molecular Medicine, University of South Florida Morsani College of Medicine, Tampa, FL, USA.
| | - Paula C Bickford
- Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, Tampa, FL, USA; James A. Haley Veterans Hospital, Research Service, Tampa, FL, USA.
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Sisakht M, Khoshdel Z, Mahmoodazdeh A, Shafiee SM, Takhshid MA. Adrenomedullin increases cAMP accumulation and BDNF expression in rat DRG and spinal motor neurons. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2021; 24:978-985. [PMID: 34712429 PMCID: PMC8528252 DOI: 10.22038/ijbms.2021.54796.12289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 06/23/2021] [Indexed: 11/06/2022]
Abstract
Objectives Adrenomedullin (AM) has high expression in the spinal cord. In this study, we investigated the expression of AM and its receptor components, including calcitonin receptor-like receptor (CLR) and receptor activity modifying proteins (RAMPs) in dorsal root ganglion (DRG) and spinal motor (SM) neurons. Furthermore, the effects of AM on cAMP/cAMP response element-binding protein (CREB), AKT/glycogen synthase kinase-3 beta (GSK-3β) signaling pathways, and expressions of brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) were evaluated. Materials and Methods Rat embryonic DRG and SM neurons were isolated, purified, and cultured. Real-time PCR was used to assess expressions of AM, CLR, and RAMPs. cAMP levels, p-CREB, BDNF, and NT-3 were determined using an enzyme-linked immunosorbent assay. p-AKT and p-GSK-3β levels were determined by western blotting. Real-time PCR showed expressions of AM, CLR, RAMP2, and RAMP3 in both DRG and SM neurons. Results AM increased cAMP accumulation and p-CREB levels in DRG and SM neurons. AM increased p-AKT and p-GSK-3β in DRG, but not SM neurons. AM significantly increased BDNF expression in both DRG and SM neurons. There was also an increase in NT-3 level in both DRG and SM neurons, which is statistically significant in SM neurons. Conclusion These results showed both DRG and SM neurons are targets of AM actions in the spinal cord. An increase in BDNF expression by AM in both DRG and SM neurons suggests the possible beneficial role of AM in protecting, survival, and regeneration of sensory and motor neurons.
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Affiliation(s)
- Mohsen Sisakht
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Khoshdel
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Mahmoodazdeh
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sayed Mohammad Shafiee
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Ali Takhshid
- Department of Medical Laboratory Sciences, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Diagnostic Laboratory Sciences and Technology Research Center, School of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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Gong Y, Wu M, Gao F, Shi M, Gu H, Gao R, Dang BQ, Chen G. Inhibition of the p‑SPAK/p‑NKCC1 signaling pathway protects the blood‑brain barrier and reduces neuronal apoptosis in a rat model of surgical brain injury. Mol Med Rep 2021; 24:717. [PMID: 34396440 DOI: 10.3892/mmr.2021.12356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 05/07/2021] [Indexed: 11/06/2022] Open
Abstract
Surgical brain injury (SBI) can disrupt the function of the blood‑brain barrier (BBB), leading to brain edema and neurological dysfunction. Thus, protecting the BBB and mitigating cerebral edema are key factors in improving the neurological function and prognosis of patients with SBI. The inhibition of WNK lysine deficient protein kinase/STE20/SPS1‑related proline/alanine‑rich kinase (SPAK) signaling ameliorates cerebral edema, and this signaling pathway regulates the phosphorylation of the downstream Na+‑K+‑Cl‑ cotransporter 1 (NKCC1). Therefore, the purpose of the present study was to investigate the role of SPAK in SBI‑induced cerebral edema and to determine whether the SPAK/NKCC1 signaling pathway was involved in SBI via regulating phosphorylation. An SBI model was established in male Sprague‑Dawley rats, and the effects of SPAK on the regulation of the NKCC1 signaling pathway on BBB permeability and nerve cell apoptosis by western blotting analysis, immunofluorescence staining, TUNEL staining, Fluoro‑Jade C staining, and brain edema and nervous system scores. The results demonstrated that, compared with those in the sham group, phosphorylated (p)‑SPAK and p‑NKCC1 protein expression levels were significantly increased in the SBI model group. After inhibiting p‑SPAK, the expression level of p‑NKCC1, neuronal apoptosis and BBB permeability were significantly reduced in SBI model rats. Taken together, these findings suggested that SBI‑induced increases in p‑SPAK and p‑NKCC1 expression exacerbated post‑traumatic neural and BBB damage, which may be mediated via the ion‑transport‑induced regulation of cell edema.
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Affiliation(s)
- Yating Gong
- Department of Rehabilitation, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Muyao Wu
- Department of Rehabilitation, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Fan Gao
- Department of Rehabilitation, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Mengying Shi
- Department of Anesthesiology, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Haiping Gu
- Department of Neurology, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Rong Gao
- Department of Neurosurgery, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Bao-Qi Dang
- Department of Rehabilitation, Zhangjiagang Traditional Chinese Medicine Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, Jiangsu 215600, P.R. China
| | - Gang Chen
- Brain and Nerve Research Laboratory, Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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Cui Y, Yin Y, Zou Y, Zhao Y, Han J, Xu B, Chen B, Xiao Z, Song H, Shi Y, Xue W, Ma X, Dai J. The Rotary Cell Culture System increases NTRK3 expression and promotes neuronal differentiation and migratory ability of neural stem cells cultured on collagen sponge. Stem Cell Res Ther 2021; 12:298. [PMID: 34020702 PMCID: PMC8139048 DOI: 10.1186/s13287-021-02381-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 05/11/2021] [Indexed: 01/29/2023] Open
Abstract
Background Recently, neural stem cell (NSC) therapy has shown promise for the treatment of many neurological diseases. Enhancing the quality of implanted cells and improving therapeutic efficacy are currently research hotspots. It has been reported that collagen sponge material provided sufficient room for cell growth in all directions and promoted the absorption of nutrients and removal of wastes. And also, the Rotary Cell Culture System (RCCS), which mimics the microgravity environment, can be used to culture cells for tissue engineering. Materials and methods We performed the mRNA and miRNA sequencing to elucidate the regulatory mechanism of NSCs cultured on the collagen sponge in the RCCS system. The luciferase assay and Western blot revealed a direct regulatory role between let-7i-5p and neurotrophic receptor tyrosine kinase 3 (NTRK3; also called TrkC). And then, the neural differentiation markers Tuj1 and Map2 were detected by immunofluorescence staining. In the meantime, the migratory ability of NSCs was detected both in vitro and in spinal cord injury animals. Results In this study, we demonstrated that the expression of NTRK3 was elevated in NSCs cultured on collagen sponge in the RCCS system. Furthermore, increased NTRK3 expression was regulated by the downregulation of let-7i-5p. Compared to traditionally cultured NSCs, the NSCs cultured on collagen sponge in the RCCS system exhibited better neuronal differentiation and migratory ability, especially in the presence of NT-3. Conclusions As the biological properties and quality of transplanted cells are critical for therapeutic success, the RCCS system combined with the collagen sponge culture system shows promise for applications in clinical practice in the future.
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Affiliation(s)
- Yi Cui
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, 100081, China
| | - Yanyun Yin
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Yunlong Zou
- Orthopaedics Surgery Department, China-Japan Union Hospital of Jilin University, No. 126, Xiantai Street, Changchun, 130033, Jilin Province, China
| | - Yannan Zhao
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Jin Han
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Bai Xu
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Bing Chen
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Zhifeng Xiao
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Hongwei Song
- EHBIO gene technology, No. 46, Jiugulou Street, Beijing, 100100, China
| | - Ya Shi
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Weiwei Xue
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China
| | - Xu Ma
- Reproductive and Genetic Center of National Research Institute for Family Planning, Beijing, 100081, China.
| | - Jianwu Dai
- Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 3 Nanyitiao, Zhongguancun, Beijing, 100190, China.
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15
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Huang TC, Luo L, Jiang SH, Chen C, He HY, Liang CF, Li WS, Wang H, Zhu L, Wang K, Guo Y. Targeting integrated stress response regulates microglial M1/M2 polarization and attenuates neuroinflammation following surgical brain injury in rat. Cell Signal 2021; 85:110048. [PMID: 34015470 DOI: 10.1016/j.cellsig.2021.110048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/01/2021] [Accepted: 05/16/2021] [Indexed: 12/24/2022]
Abstract
Integrated stress response (ISR) contributes to various neuropathological processes and acting as a therapy target in CNS injuries. However, the fundamental role of ISR in regulating microglial polarization remains largely unknown. Currently no proper pharmacological approaches to reverse microglia-driven neuroinflammation in surgical brain injury (SBI) have been reported. Here we found that inhibition of the crucial ISR effector, activating transcription factor 4 (ATF4), using the RNA interference suppressed the lipopolysaccharide (LPS)-stimulated microglial M1 polarization in vitro. Interestingly, counteracting ISR with a small-molecule ISR inhibitor (ISRIB) resulted in a significant microglial M1 towards M2 phenotype switching after LPS treatment. The potential underlying mechanisms may related to downregulate the intracellular NADPH oxidase 4 (NOX4) expression under the neuroinflammatory microenvironment. Notably, ISRIB ameliorated the infiltration of microglia and improved the neurobehavioral outcomes in the SBI rat model. Overall, our findings suggest that targeting ISR exerts a novel anti-inflammatory effect on microglia via regulating M1/M2 phenotype and may represent a potential therapeutic target to overcome neuroinflammation following SBI.
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Affiliation(s)
- Teng-Chao Huang
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China; East China Institute of Digital Medical Engineering, Shangrao 334000, PR China
| | - Lun Luo
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Shi-Hai Jiang
- Department of Joint Replacement and Trauma Surgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China; Institute for Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University Hospital Leipzig, Germany
| | - Chuan Chen
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Hai-Yong He
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Chao-Feng Liang
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Wen-Sheng Li
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Hui Wang
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Lei Zhu
- Department of Burns, Plastic & Reconstructive Surgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China
| | - Kun Wang
- Department of Joint Replacement and Trauma Surgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China.
| | - Ying Guo
- Department of Neurosurgery, Third Affiliated Hospital of Sun Yat-sen University, Canton 510630, PR China.
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16
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Gong Y, Wu M, Shen J, Tang J, Li J, Xu J, Dang B, Chen G. Inhibition of the NKCC1/NF-κB Signaling Pathway Decreases Inflammation and Improves Brain Edema and Nerve Cell Apoptosis in an SBI Rat Model. Front Mol Neurosci 2021; 14:641993. [PMID: 33867933 PMCID: PMC8044300 DOI: 10.3389/fnmol.2021.641993] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/08/2021] [Indexed: 11/13/2022] Open
Abstract
Surgical brain injury (SBI) triggers microglia to release numerous inflammatory factors, leading to brain edema and neurological dysfunction. Reducing neuroinflammation and protecting the blood-brain barrier (BBB) are key factors to improve the neurological function and prognosis after SBI. Na+-K+-Cl– cotransporter 1 (NKCC1) and nuclear factor κB (NF-κB) have been implicated in the secretion of inflammatory cytokines by microglia in brain injury. This study aimed to establish the role of NKCC1 in inducing inflammation in SBI, as well as to determine whether NKCC1 controls the release of interleukin-1β (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) via phosphorylation of NF-κB in microglia, thus affecting BBB permeability and neuronal cell apoptosis. Male Sprague-Dawley (SD) rats were used to establish an SBI model. This study revealed that compared with the sham group, the expression levels of p-NKCC1, p-p65-NF-κB, and related inflammatory factor proteins in SBI model group significantly increased. After p-NKCC1 was inhibited, p-p65-NF-κB, IL-6, IL-1β, and TNF-α were downregulated, and nerve cell apoptosis and BBB permeability were significantly reduced. These findings suggest that the SBI-induced increase in p-NKCC1 exacerbates neuroinflammation, brain edema, and nerve function injury, which may be mediated by regulating the activity of p65-NF-κB that in turn influences the release of inflammatory factors.
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Affiliation(s)
- Yating Gong
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Muyao Wu
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Jinchao Shen
- Department of Anesthesiology, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Jiafeng Tang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Jie Li
- Department of Intensive Care Unit, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Jianguo Xu
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Baoqi Dang
- Department of Rehabilitation, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Suzhou, China
| | - Gang Chen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
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17
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Qiao X, Sun M, Chen Y, Jin W, Zhao H, Zhang W, Lai J, Yan H. Ethanol-Induced Neuronal and Cognitive/Emotional Impairments are Accompanied by Down-Regulated NT3-TrkC-ERK in Hippocampus. Alcohol Alcohol 2021; 56:220-229. [PMID: 33103180 DOI: 10.1093/alcalc/agaa101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 11/14/2022] Open
Abstract
AIMS Ethanol ingestion affects cognition and emotion, which have been attributed to the dysfunction of specific brain structures. Studies of alcoholic patients and animal models consistently identify reduced hippocampal mass as a key ethanol-induced brain adaptation. This study evaluated how neuroadaptation in the hippocampus (Hip) produced by ethanol contributed to related behavioral deficits in male and female rats. METHODS Effects of acute, short-term and long-term ethanol exposure on the anxiety-like behavior and recognition memory on adult male and female Sprague-Dawley rats were assessed using elevated plus maze test and novel object recognition test, respectively. In addition, in order to investigate the direct effect of ethanol on hippocampal neurons, primary culture of hippocampal neurons was exposed to ethanol (10, 30 and 90 mM; 1, 24 and 48 h), and viability (CCK-8) and morphology (immunocytochemistry) were analyzed at structural levels. Western blot assays were used to assess protein levels of NT3-TrkC-ERK. RESULTS Acute and short-term ethanol exposure exerted anxiolytic effects, whereas long-term ethanol exposure induced anxiogenic responses in both sexes. Short-term ethanol exposure impaired spatial memory only in female rats, whereas long-term ethanol exposure impaired spatial and recognition memory in both sexes. These behavioral impairments and ethanol-induced loss of hippocampal neurons and decreased cell viability were accompanied by downregulated NT3-TrkC-ERK pathway. CONCLUSION These results indicate that NT3-TrkC-ERK signaling in the Hip may play an important role in ethanol-induced structural and behavioral impairments.
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Affiliation(s)
- Xiaomeng Qiao
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, No.100, Science Avenue, Zhengzhou, Henan, 450001, China
| | - Mizhu Sun
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, No.100, Science Avenue, Zhengzhou, Henan, 450001, China
| | - Yuanyuan Chen
- Department of Forensic Biology, College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No.76, Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Wenyang Jin
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, No.100, Science Avenue, Zhengzhou, Henan, 450001, China
| | - Huan Zhao
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, No.100, Science Avenue, Zhengzhou, Henan, 450001, China
| | - Weiqi Zhang
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, No.100, Science Avenue, Zhengzhou, Henan, 450001, China
| | - Jianghua Lai
- Department of Forensic Biology, College of Forensic Science, School of Medicine, Xi'an Jiaotong University, No.76, Yanta West Road, Xi'an, Shaanxi, 710061, China.,Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, No.76, Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Hongtao Yan
- Department of Forensic Medicine, School of Basic Medical Sciences, Zhengzhou University, No.100, Science Avenue, Zhengzhou, Henan, 450001, China
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18
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Travis ZD, Sherchan P, Hayes WK, Zhang JH. Surgically-induced brain injury: where are we now? Chin Neurosurg J 2019; 5:29. [PMID: 32922928 PMCID: PMC7398187 DOI: 10.1186/s41016-019-0181-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 11/14/2019] [Indexed: 12/18/2022] Open
Abstract
Neurosurgical procedures cause inevitable brain damage from the multitude of surgical manipulations utilized. Incisions, retraction, thermal damage from electrocautery, and intraoperative hemorrhage cause immediate and long-term brain injuries that are directly linked to neurosurgical operations, and these types of injuries, collectively, have been termed surgical brain injury (SBI). For the past decade, a model developed to study the underlying brain pathologies resulting from SBI has provided insight on cellular mechanisms and potential therapeutic targets. This model, as seen in a rat, mouse, and rabbit, mimics a neurosurgical operation and causes commonly encountered post-operative complications such as brain edema, neuroinflammation, and hemorrhage. In this review, we elaborate on SBI and its clinical impact, the SBI animal models and their clinical relevance, the importance of applying therapeutics before neurosurgical procedures (i.e., preconditioning), and the new direction of applying venom-derived proteins to attenuate SBI.
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Affiliation(s)
- Zachary D Travis
- Department of Earth and Biological Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354 USA
| | - Prativa Sherchan
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354 USA
| | - William K Hayes
- Department of Earth and Biological Sciences, School of Medicine, Loma Linda University, Loma Linda, CA 92354 USA
| | - John H Zhang
- Department of Physiology and Pharmacology, School of Medicine, Loma Linda University, Loma Linda, CA 92354 USA.,Department of Anesthesiology, School of Medicine, Loma Linda University, Loma Linda, CA 92354 USA
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19
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Peng J, Zuo Y, Huang L, Okada T, Liu S, Zuo G, Zhang G, Tang J, Xia Y, Zhang JH. Activation of GPR30 with G1 attenuates neuronal apoptosis via src/EGFR/stat3 signaling pathway after subarachnoid hemorrhage in male rats. Exp Neurol 2019; 320:113008. [DOI: 10.1016/j.expneurol.2019.113008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/16/2019] [Accepted: 07/05/2019] [Indexed: 12/21/2022]
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20
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Teleanu RI, Gherasim O, Gherasim TG, Grumezescu V, Grumezescu AM, Teleanu DM. Nanomaterial-Based Approaches for Neural Regeneration. Pharmaceutics 2019; 11:E266. [PMID: 31181719 PMCID: PMC6630326 DOI: 10.3390/pharmaceutics11060266] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 12/13/2022] Open
Abstract
Mechanical, thermal, chemical, or ischemic injury of the central or peripheral nervous system results in neuron loss, neurite damage, and/or neuronal dysfunction, almost always accompanied by sensorimotor impairment which alters the patient's life quality. The regenerative strategies for the injured nervous system are currently limited and mainly allow partial functional recovery, so it is necessary to develop new and effective approaches for nervous tissue regenerative therapy. Nanomaterials based on inorganic or organic and composite or hybrid compounds with tunable physicochemical properties and functionality proved beneficial for the transport and delivery/release of various neuroregenerative-relevant biomolecules or cells. Within the following paragraphs, we will emphasize that nanomaterial-based strategies (including nanosized and nanostructured biomaterials) represent a promising alternative towards repairing and regenerating the injured nervous system.
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Affiliation(s)
- Raluca Ioana Teleanu
- "Victor Gomoiu" Clinical Children's Hospital, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
| | - Oana Gherasim
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania.
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania.
| | - Tudor George Gherasim
- National Institute of Neurology and Neurovascular Diseases, 077160 Bucharest, Romania.
| | - Valentina Grumezescu
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077125 Magurele, Romania.
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 011061 Bucharest, Romania.
| | - Daniel Mihai Teleanu
- Emergency University Hospital, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
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Gao L, Pu X, Huang Y, Huang J. MicroRNA-340-5p relieved chronic constriction injury-induced neuropathic pain by targeting Rap1A in rat model. Genes Genomics 2019; 41:713-721. [PMID: 30848438 DOI: 10.1007/s13258-019-00802-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 02/21/2019] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Neuropathic pain (NP) is one of the main challenges towards NP syndrome treatment. miR-340-5p exhibit different expression levels in NP models. Its effects on NP remained unclear. The objective of this study was to explore the potential regulation mechanisms of miR-340-5p in NP. METHODS Rat model of chronic constriction injury (CCI) was established to induce NP in vivo. NP levels were assessed using mechanical withdrawal threshold (MWT). The inflammation response in CCI rats were determined by HE staining and ELISA assay. The target genes of miR-340-5p were verified by luciferase report assays. RESULTS In CCI rats, level of miR-340-5p was down-regulated both in spinal cord tissues and isolated microglial cells. Paw withdrawal threshold (PWT) and paw withdrawal latency (PWL) were decreased in CCI rats, which were restored upon miR-340-5p overexpression. miR-340-5p overexpression also decreased inflammation as well as expression levels of COX-2, IL-1β, TNF-α and IL-6 in CCI rats. Luciferase report assays revealed Rap1A was a target gene of miR-340-5p in the experimental model. Elevated miR-340-5p decreased Rap1A expression level in vitro and in vivo. Overexpression of Rap1A protein restored expression levels of COX-2, IL-1β, TNF-α and IL-6, reduced the PWT and PWL and increased inflammation response in CCI rats. CONCLUSION miR-340-5p alleviated CCI-induced NP by targeting Rap1A. miR-340-5p and Rap1A may be the potential treatment targets for NP therapeutics.
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Affiliation(s)
- Lu Gao
- Department of Neurology, Taizhou People's Hospital, No. 366 Taihu Road, Hailing District, Taizhou, 225300, Jiangsu, China
| | - Xuehua Pu
- Department of ICU, Taizhou People's Hospital, Taizhou, 225300, Jiangsu, China.
| | - Yujing Huang
- Department of Neurology, Taizhou People's Hospital, No. 366 Taihu Road, Hailing District, Taizhou, 225300, Jiangsu, China
| | - Jing Huang
- Department of Neurology, Taizhou People's Hospital, No. 366 Taihu Road, Hailing District, Taizhou, 225300, Jiangsu, China
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