1
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Ma Y, He Z, Wang J, Zheng P, Ma Z, Liang Q, Zhang Q, Zhao X, Huang J, Weng W, Jiang J, Feng J. Mild hypothermia promotes neuronal differentiation of human neural stem cells via RBM3-SOX11 signaling pathway. iScience 2024; 27:109435. [PMID: 38523796 PMCID: PMC10960102 DOI: 10.1016/j.isci.2024.109435] [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: 09/20/2023] [Revised: 01/06/2024] [Accepted: 03/04/2024] [Indexed: 03/26/2024] Open
Abstract
Both therapeutic hypothermia and neural stem cells (NSCs) transplantation have shown promise in neuroprotection and neural repair after brain injury. However, the effects of therapeutic hypothermia on neuronal differentiation of NSCs are not elucidated. In this study, we aimed to investigate whether mild hypothermia promoted neuronal differentiation in cultured and transplanted human NSCs (hNSCs). A significant increase in neuronal differentiation rate of hNSCs was found when exposed to 35°C, from 33% to 45% in vitro and from 7% to 15% in vivo. Additionally, single-cell RNA sequencing identified upregulation of RNA-binding motif protein 3 (RBM3) in neuroblast at 35°C, which stabilized the SRY-box transcription factor 11 (SOX11) mRNA and increased its protein expression, leading to an increase in neuronal differentiation of hNSCs. In conclusion, our study highlights that mild hypothermia at 35°C enhances hNSCs-induced neurogenesis through the novel RBM3-SOX11 signaling pathway, and provides a potential treatment strategy in brain disorders.
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Affiliation(s)
- Yuxiao Ma
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Zhenghui He
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Jiangchang Wang
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Ping Zheng
- Department of Neurosurgery, Shanghai Pudong New Area People’s Hospital, Shanghai 201299, China
| | - Zixuan Ma
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Qian Liang
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Qiao Zhang
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Xiongfei Zhao
- Shanghai Angecon Biotechnology Co., Ltd., Shanghai 201318, China
| | - Jialin Huang
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Weiji Weng
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Jiyao Jiang
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
| | - Junfeng Feng
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
- Shanghai Institute of Head Trauma, Shanghai 200127, China
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2
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Kawakita K, Shishido H, Kuroda Y. Review of Temperature Management in Traumatic Brain Injuries. J Clin Med 2024; 13:2144. [PMID: 38610909 PMCID: PMC11012999 DOI: 10.3390/jcm13072144] [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: 02/29/2024] [Revised: 04/06/2024] [Accepted: 04/07/2024] [Indexed: 04/14/2024] Open
Abstract
Therapeutic hypothermia (TH) for severe traumatic brain injury has seen restricted application due to the outcomes of randomized controlled trials (RCTs) conducted since 2000. In contrast with earlier RCTs, recent trials have implemented active normothermia management in control groups, ensuring comparable intensities of non-temperature-related therapeutic interventions, such as neurointensive care. This change in approach may be a contributing factor to the inability to establish the efficacy of TH. Currently, an active temperature management method using temperature control devices is termed "targeted temperature management (TTM)". One of the goals of TTM for severe traumatic brain injury is the regulation of increased intracranial pressure, employing TTM as a methodology for intracranial pressure management. Additionally, fever in traumatic brain injury has been acknowledged as contributing to poor prognosis, underscoring the importance of proactively preventing fever. TTM is also employed for the preemptive prevention of fever in severe traumatic brain injury. As an integral component of current neurointensive care, it is crucial to precisely delineate the targets of TTM and to potentially apply them in the treatment of severe traumatic brain injury.
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Affiliation(s)
- Kenya Kawakita
- Emergency Medical Center, Kagawa University Hospital, Miki 761-0793, Japan;
| | - Hajime Shishido
- Emergency Medical Center, Kagawa University Hospital, Miki 761-0793, Japan;
| | - Yasuhiro Kuroda
- Department of Emergency, Disaster, and Critical Care Medicine, Faculty of Medicine, Kagawa University, Miki 760-0793, Japan;
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3
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Hayashi S, Seki-Omura R, Yamada S, Kamata T, Sato Y, Oe S, Koike T, Nakano Y, Iwashita H, Hirahara Y, Tanaka S, Sekijima T, Ito T, Yasukochi Y, Higasa K, Kitada M. OLIG2 translocates to chromosomes during mitosis via a temperature downshift: A novel neural cold response of mitotic bookmarking. Gene 2024; 891:147829. [PMID: 37748631 DOI: 10.1016/j.gene.2023.147829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/09/2023] [Accepted: 09/22/2023] [Indexed: 09/27/2023]
Affiliation(s)
- Shinichi Hayashi
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan.
| | - Ryohei Seki-Omura
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Shintaro Yamada
- Department of Functional Neuroscience, Institute of Biomedical Science, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Taito Kamata
- Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-nocho, Niigata, Japan; Faculty of Agriculture, Niigata University, 8050 Ikarashi 2-nocho, Niigata, Japan
| | - Yuki Sato
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Souichi Oe
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Taro Koike
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Yousuke Nakano
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Hikaru Iwashita
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Yukie Hirahara
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan; Faculty of Nursing, Kansai Medical University, Shinmachi 2-2-2, Hirakata, Osaka, Japan
| | - Susumu Tanaka
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan; Department of Anatomy and Physiology, Faculty of Nursing and Nutrition, University of Nagasaki, Manabino 1-1-1, Nagasaki, Japan
| | - Tsuneo Sekijima
- Faculty of Agriculture, Niigata University, 8050 Ikarashi 2-nocho, Niigata, Japan
| | - Takeshi Ito
- Department of Genome Analysis, Institute of Biomedical Science, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Yoshiki Yasukochi
- Department of Genome Analysis, Institute of Biomedical Science, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Koichiro Higasa
- Department of Genome Analysis, Institute of Biomedical Science, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan
| | - Masaaki Kitada
- Department of Anatomy, Faculty of Medicine, Kansai Medical University, Shinmachi 2-5-1, Hirakata, Osaka, Japan.
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4
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Congeni J, Murray T, Kline P, Bouhenni R, Morgan D, Liebig C, Lesak A, McNinch NL. Preliminary Safety and Efficacy of Head and Neck Cooling Therapy After Concussion in Adolescent Athletes: A Randomized Pilot Trial. Clin J Sport Med 2022; 32:341-347. [PMID: 34009790 PMCID: PMC9223510 DOI: 10.1097/jsm.0000000000000916] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/23/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the safety and efficacy of head and neck cooling when applied up to 8 days after concussion among adolescent athletes. DESIGN A randomized nonblinded pilot trial. SETTING Sports Medicine Clinic in a tertiary hospital. PATIENTS Adolescent athletes aged 12 to 17 years diagnosed with a concussion within 1 week of injury. INTERVENTIONS AND MAIN OUTCOME MEASURES The control group (n = 27) received standard treatment (short term brain rest), whereas the treatment group (n = 28) received standard treatment and head and neck cooling. Head and neck cooling treatment was applied to patients at the postinjury assessment visit and at 72 hours post-injury. The SCAT5 (Sport Concussion Assessment Tool) total symptom severity score was collected at postinjury assessment visit, pre- and post-treatment at 72 hours, and at 10 days, and 4 weeks post-treatment. RESULTS Athletes who received head and neck cooling had a faster symptom recovery ( P = 0.003) and experienced significant reduction in symptom severity scores after treatment ( P < 0.001). Sport type and gender did not influence the treatment outcome ( P = 0.447 and 0.940, respectively). CONCLUSIONS This pilot study demonstrates feasibility of head and neck cooling for the management of acute concussion in adolescent athletes.
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Affiliation(s)
- Joseph Congeni
- Department of Sports Medicine, Akron Children's Hospital, Akron, Ohio; and
| | - Tamara Murray
- Department of Sports Medicine, Akron Children's Hospital, Akron, Ohio; and
| | - Peyton Kline
- Rebecca D. Considine Research Institute, Akron Children's Hospital, Akron, Ohio
| | - Rachida Bouhenni
- Rebecca D. Considine Research Institute, Akron Children's Hospital, Akron, Ohio
| | - Danielle Morgan
- Rebecca D. Considine Research Institute, Akron Children's Hospital, Akron, Ohio
| | - Christopher Liebig
- Department of Sports Medicine, Akron Children's Hospital, Akron, Ohio; and
| | - Alexandria Lesak
- Rebecca D. Considine Research Institute, Akron Children's Hospital, Akron, Ohio
| | - Neil L. McNinch
- Rebecca D. Considine Research Institute, Akron Children's Hospital, Akron, Ohio
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5
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Hu Y, Tao W. Microenvironmental Variations After Blood-Brain Barrier Breakdown in Traumatic Brain Injury. Front Mol Neurosci 2021; 14:750810. [PMID: 34899180 PMCID: PMC8662751 DOI: 10.3389/fnmol.2021.750810] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022] Open
Abstract
Traumatic brain injury (TBI) is linked to several pathologies. The blood-brain barrier (BBB) breakdown is considered to be one of the initial changes. Further, the microenvironmental alteration following TBI-induced BBB breakdown can be multi-scaled, constant, and dramatic. The microenvironmental variations after disruption of BBB includes several pathological changes, such as cerebral blood flow (CBF) alteration, brain edema, cerebral metabolism imbalances, and accumulation of inflammatory molecules. The modulation of the microenvironment presents attractive targets for TBI recovery, such as reducing toxic substances, inhibiting inflammation, and promoting neurogenesis. Herein, we briefly review the pathological alterations of the microenvironmental changes following BBB breakdown and outline potential interventions for TBI recovery based on microenvironmental modulation.
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Affiliation(s)
- Yue Hu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Weiwei Tao
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engineering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing, China
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6
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Chen C, Hu N, Wang J, Xu L, Jia XL, Fan X, Shi JX, Chen F, Tu Y, Wang YW, Li XH. Umbilical cord mesenchymal stem cells promote neurological repair after traumatic brain injury through regulating Treg/Th17 balance. Brain Res 2021; 1775:147711. [PMID: 34793756 DOI: 10.1016/j.brainres.2021.147711] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 10/18/2021] [Accepted: 11/03/2021] [Indexed: 12/11/2022]
Abstract
Traumatic brain injury (TBI) is a brain injury resulting from blunt mechanical external forces, which is a crucial public health and socioeconomic problem worldwide. TBI is one of the leading causes of death or disability. The primary injury of TBI is generally irreversible. Secondary injury caused by neuroinflammation could result in exacerbation of patients, which indicated that anti-inflammation and immunomodulatory were necessary for the treatment of TBI. Accumulated evidence reveals that the transplantation of umbilical cord mesenchymal stem cells (UCMSCs) could regulate the microenvironment in vivo and keep a balance of helper T 17(Th17)/ regulatory T cell (Treg). Therefore, it is reasonable to hypothesize that the UCMSCs could repair neurological impairment by maintaining the balance of Th17/Treg after TBI. In the study, we observed the phenomenon of trans-differentiation of T lymphocytes into Th17 cells after TBI. Rats were divided into Sham, TBI, and TBI + UCMSCs groups to explore the effects of the UCMSCs. The results manifested that trans-differentiation of Th17 into Treg was facilitated by UCMSCs, which was followed by promotion of neurological recovery and improvement of learning and memory in TBI rats. Furthermore, UCMSCs decreased the phosphorylation of nuclear factor-kappa B (NF-κB) and increased the expression of mothers against decapentaplegic homolog 3 (Smad3) in vivo and vitro experiments. In conclusion, UCMSCs maintained Th17/Treg balance via the transforming growth factor-β (TGF-β)/ Smad3/ NF-κB signaling pathway.
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Affiliation(s)
- Chong Chen
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin 300162, China
| | - Nan Hu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
| | - Jing Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin 300162, China; Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030032, China
| | - Lin Xu
- Medical Psychology Section, Hubei General Hospital of Armed Police Force, Wuhan 430071, China
| | - Xiao-Li Jia
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
| | - Xiu Fan
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
| | - Jian-Xin Shi
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China
| | - Feng Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin 300162, China
| | - Yue Tu
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of PAPF, Tianjin 300162, China
| | - You-Wei Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China.
| | - Xiao-Hong Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin 300072, China; Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin 300072, China.
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7
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Li Z, Zhang H, Cao C, Qian T, Li H. Gangliosides combined with mild hypothermia provides neuroprotection in a rat model of traumatic brain injury. Neuroreport 2021; 32:1113-1121. [PMID: 34284446 DOI: 10.1097/wnr.0000000000001703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Traumatic brain injury (TBI) remains a major cause of disability and death in modern society. In this study, we explored the neuroprotection role of the combination of gangliosides (GM) and mild hypothermia (MH) and the potential effect on oxidative stress injuries in a rat model of TBI. All 50 rats were randomized to five groups: (1) NC group: undergoing surgery without hit; (2) TBI group: undergoing surgery with hit; (3) GM group: TBI treated with gangliosides; (4) MHT group: TBI treated with MH; (5) GM+MHT group: TBI treated with gangliosides and MH. Spatial learning impairments, neurological function injury, Evans Blue leakage, brain MRI and oxidative stress injuries were assessed. The protein levels of Cleaved-caspase 3 and CytC were also detected. Both GM and MHT could rescue TBI-induced spatial learning impairments, improve neurological function injury and brain edema. In addition, the combination of them has a better therapeutic effect. Through the MRI, we found that compared with the TBI group, the brain tissue edema area of GM group, MHT group, and GM+MHT group was smaller, the occupancy effect was weakened, and the midline was slightly shifted. Compared with the GM group and MHT group, these changes in the GM+MHT group were much smaller. GM combined with MH-alleviated TBI-induced oxidative stress injuries and apoptosis. Our study reveals that GM and MH potentially provide neuroprotection via the suppression of oxidative stress injuries and apoptosis after TBI in rats.
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Affiliation(s)
- Zhaolin Li
- Department of Neurosurgery, The Second Hospital of Tianjin Medical University
| | - Hongwei Zhang
- Department of Neurosurgery, The Second Hospital of Tianjin Medical University
| | - Cangzhu Cao
- Department of Neurosurgery, The Second Hospital of Tianjin Medical University
| | - Tao Qian
- Department of Neurosurgery, Hebei General Hospital, Xinhua District, Shijiazhuang, China
| | - Hong Li
- Department of Neurosurgery, The Second Hospital of Tianjin Medical University
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8
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Zhao B, Wang Y, Liu R, Jia XL, Hu N, An XW, Zheng CG, Chen C, Sun HT, Chen F, Wang JJ, Li XH. Rutaecarpine Ameliorated High Sucrose-Induced Alzheimer's Disease Like Pathological and Cognitive Impairments in Mice. Rejuvenation Res 2020; 24:181-190. [PMID: 32892706 DOI: 10.1089/rej.2020.2349] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
High sucrose can induce tau hyperphosphorylation and cognitive dysfunction/memory impairment as observed in Alzheimer's disease (AD). Rutaecarpine, a specific (transient receptor potential vanilloid 1 [TRPV1]) agonist, is neuroprotective against high sucrose diet-induced impairment, but detailed mechanisms are still elusive. In this study, we investigated whether rutaecarpine mitigates high sucrose diet-induced pathological alterations and cognitive in AD-like mice. Mice were administered fodder containing 0.01% rutaecarpine and 20% sucrose solution. Our results showed that rutaecarpine significantly attenuated high sucrose diet-induced spatial memory impairment and enhanced synaptic plasticity; rutaecarpine prevented high sucrose diet-induced tau hyperphosphorylation by decreasing glycogen synthase kinase-3β (GSK-3β) activity; activation of GSK-3β reversed the protective effect of rutaecarpine on learning and memory deficits, synaptic plasticity, and tau hyperphosphorylation induced by high-glucose diet significantly, suggesting that GSK-3β activation is required for high glucose-induced tau hyperphosphorylation. These results demonstrated that rutaecarpine can mitigate high sucrose diet-induced hyperphosphorylation of AD-associated tau protein and cognitive impairment by inhibiting GSK-3β, which supported that dietary rutaecarpine might have a promising use for therapeutic intervention of AD.
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Affiliation(s)
- Bin Zhao
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yi Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.,Tianjin Key Laboratory of Neurotrauma Repair, Characteristic Medical Center of the Chinese People's Armed Police Force, Tianjin, China.,Department of Neurology, Tianjin Hospital of Tianjin, Tianjin, China
| | - Rui Liu
- Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin, China
| | - Xiao-Li Jia
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Nan Hu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Xing-Wei An
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Chen-Guang Zheng
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Chong Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Characteristic Medical Center of the Chinese People's Armed Police Force, Tianjin, China
| | - Hong-Tao Sun
- Tianjin Key Laboratory of Neurotrauma Repair, Characteristic Medical Center of the Chinese People's Armed Police Force, Tianjin, China
| | - Feng Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Characteristic Medical Center of the Chinese People's Armed Police Force, Tianjin, China
| | - Jing-Jing Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Characteristic Medical Center of the Chinese People's Armed Police Force, Tianjin, China
| | - Xiao-Hong Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
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9
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Delaney SL, Gendreau JL, D'Souza M, Feng AY, Ho AL. Optogenetic Modulation for the Treatment of Traumatic Brain Injury. Stem Cells Dev 2020; 29:187-197. [DOI: 10.1089/scd.2019.0187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
| | | | | | - Austin Y. Feng
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, Georgia
| | - Allen L. Ho
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, Georgia
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10
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Liu XY, Wei MG, Liang J, Xu HH, Wang JJ, Wang J, Yang XP, Lv FF, Wang KQ, Duan JH, Tu Y, Zhang S, Chen C, Li XH. Injury-preconditioning secretome of umbilical cord mesenchymal stem cells amplified the neurogenesis and cognitive recovery after severe traumatic brain injury in rats. J Neurochem 2019; 153:230-251. [PMID: 31465551 DOI: 10.1111/jnc.14859] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/10/2019] [Accepted: 08/02/2019] [Indexed: 12/14/2022]
Abstract
Traumatic brain injury (TBI) is a dominant cause of death and permanent disability worldwide. Although TBI could significantly increase the proliferation of adult neural stem cells in the hippocampus, the survival and maturation of newborn cells is markedly low. Increasing evidence suggests that the secretome derived from mesenchymal stem cells (MSCs) would be an ideal alternative to MSC transplantation. The successive and microenvironmentally responsive secretion in MSCs may be critical for the functional benefits provided by transplanted MSCs after TBI. Therefore, it is reasonable to hypothesize that the signaling molecules secreted in response to local tissue damage can further facilitate the therapeutic effect of the MSC secretome. To simulate the complex microenvironment in the injured brain well, we used traumatically injured brain tissue extracts to pretreat umbilical cord mesenchymal stem cells (UCMSCs) in vitro and stereotaxically injected the secretome from traumatic injury-preconditioned UCMSCs into the dentate gyrus of the hippocampus in a rat severe TBI model. The results revealed that compared with the normal secretome, the traumatic injury-preconditioned secretome could significantly further promote the differentiation, migration, and maturation of newborn cells in the dentate gyrus and ultimately improve cognitive function after TBI. Cytokine antibody array suggested that the increased benefits of secretome administration were attributable to the newly produced proteins and up-regulated molecules from the MSC secretome preconditioned by a traumatically injured microenvironment. Our study utilized the traumatic injury-preconditioned secretome to amplify neurogenesis and improve cognitive recovery, suggesting this method may be a novel and safer candidate for nerve repair. Cover Image for this issue: doi: 10.1111/jnc.14741.
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Affiliation(s)
- Xiao-Yin Liu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.,Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China.,Tianjin Medical University, Tianjin, China
| | - Meng-Guang Wei
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Jun Liang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Hai-Huan Xu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.,Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Jing-Jing Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Jing Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Xi-Ping Yang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Fang-Fang Lv
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Ke-Qiang Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Jing-Hao Duan
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China
| | - Yue Tu
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Sai Zhang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Chong Chen
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.,Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
| | - Xiao-Hong Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, China.,Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Characteristic Medical Center of People's Armed Police Forces, Tianjin, China
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11
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Wang CF, Zhao CC, He Y, Li ZY, Liu WL, Huang XJ, Deng YF, Li WP. Mild hypothermia reduces endoplasmic reticulum stress-induced apoptosis and improves neuronal functions after severe traumatic brain injury. Brain Behav 2019; 9:e01248. [PMID: 30834702 PMCID: PMC6456779 DOI: 10.1002/brb3.1248] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/15/2018] [Accepted: 02/09/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Mild hypothermia is wildly used in clinical treatment of traumatic brain injury (TBI). However, the effect of mild hypothermia on endoplasmic reticulum (ER) stress-induced apoptosis after severe TBI is still unknown. METHODS In the present study, we used BALB/c mice to investigate the efficacy of posttraumatic mild hypothermia in reducing ER stress. Severe TBI was induced by controlled cortical impact injury. Mild hypothermia treatment was performed immediately after surgery and maintained for 4 hr. The animals were euthanized at 1 and 7 days after severe TBI. The expression levels of ER stress marker proteins were evaluated using Western blot and immunofluorescence. Cell apoptosis rate was analyzed by TUNEL staining. Neuronal functions of the mice were assessed using rotarod test and Morris water maze. RESULTS Our results revealed that mild hypothermia significantly attenuated ER stress marker proteins, including p-eIF2α/eIF2α, ATF4, CHOP and IRE-1α, and reduced apoptosis rate in the pericontusion region at 1 and 7 days after severe TBI. Interestingly, mild hypothermia also prevented the translocation of CHOP into nucleus. In addition, posttraumatic mild hypothermia significantly improved neuronal functions after severe TBI. CONCLUSIONS Our findings illustrated that mild hypothermia could reduce ER stress-induced apoptosis and improve neuronal functions after severe traumatic brain injury.
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Affiliation(s)
- Chuan-Fang Wang
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China.,Brain Center, Shenzhen Key Laboratory of Neurosurgery, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Cheng-Cheng Zhao
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yi He
- Brain Center, Shenzhen Key Laboratory of Neurosurgery, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Zong-Yang Li
- Brain Center, Shenzhen Key Laboratory of Neurosurgery, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Wen-Lan Liu
- Brain Center, Shenzhen Key Laboratory of Neurosurgery, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Xian-Jian Huang
- Brain Center, Shenzhen Key Laboratory of Neurosurgery, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
| | - Yue-Fei Deng
- Department of Neurosurgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wei-Ping Li
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China.,Brain Center, Shenzhen Key Laboratory of Neurosurgery, The First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, Guangdong, China
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12
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Liska MG, Crowley MG, Tuazon JP, Borlongan CV. Neuroprotective and neuroregenerative potential of pharmacologically-induced hypothermia with D-alanine D-leucine enkephalin in brain injury. Neural Regen Res 2018; 13:2029-2037. [PMID: 30323116 PMCID: PMC6199924 DOI: 10.4103/1673-5374.241427] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 10/27/2017] [Indexed: 12/21/2022] Open
Abstract
Neurovascular disorders, such as traumatic brain injury and stroke, persist as leading causes of death and disability - thus, the search for novel therapeutic approaches for these disorders continues. Many hurdles have hindered the translation of effective therapies for traumatic brain injury and stroke primarily because of the inherent complexity of neuropathologies and an inability of current treatment approaches to adapt to the unique cell death pathways that accompany the disorder symptoms. Indeed, developing potent treatments for brain injury that incorporate dynamic and multiple disorder-engaging therapeutic targets are likely to produce more effective outcomes than traditional drugs. The therapeutic use of hypothermia presents a promising option which may fit these criteria. While regulated temperature reduction has displayed great promise in preclinical studies of brain injury, clinical trials have been far less consistent and associated with adverse effects, especially when hypothermia is pursued via systemic cooling. Accordingly, devising better methods of inducing hypothermia may facilitate the entry of this treatment modality into the clinic. The use of the delta opioid peptide D-alanine D-leucine enkephalin (DADLE) to pharmacologically induce temperature reduction may offer a potent alternative, as DADLE displays both the ability to cause temperature reduction and to confer a broad profile of other neuroprotective and neuroregenerative processes. This review explores the prospect of DADLE-mediated hypothermia to treat neurovascular brain injuries, emphasizing the translational steps necessary for its clinical translation.
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Affiliation(s)
- M. Grant Liska
- Center of Excellence for Aging and Brain Repair, University of South Florida College of Medicine, Tampa, FL, USA
| | - Marci G. Crowley
- Center of Excellence for Aging and Brain Repair, University of South Florida College of Medicine, Tampa, FL, USA
| | - Julian P. Tuazon
- Center of Excellence for Aging and Brain Repair, University of South Florida College of Medicine, Tampa, FL, USA
| | - Cesar V. Borlongan
- Center of Excellence for Aging and Brain Repair, University of South Florida College of Medicine, Tampa, FL, USA
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13
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Sama DM, Carlson SW, Joseph B, Saenger S, Metzger F, Saatman KE. Assessment of systemic administration of PEGylated IGF-1 in a mouse model of traumatic brain injury. Restor Neurol Neurosci 2018; 36:559-569. [PMID: 29889090 DOI: 10.3233/rnn-180831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Traumatic brain injury can result in lasting cognitive dysfunction due to degeneration of mature hippocampal neurons as well as the loss of immature neurons within the dentate gyrus. While endogenous neurogenesis affords a partial recovery of the immature neuron population, hippocampal neurogenesis may be enhanced through therapeutic intervention. Insulin-like growth factor-1 (IGF-1) has the potential to improve cognitive function and promote neurogenesis after TBI, but its short half-life in the systemic circulation makes it difficult to maintain a therapeutic concentration. IGF-1 modified with a polyethylene glycol moiety (PEG-IGF-1) exhibits improved stability and half-life while retaining its ability to enter the brain from the periphery, increasing its viability as a translational approach. OBJECTIVE The goal of this study was to evaluate the ability of systemic PEG-IGF-1 administration to attenuate acute neuronal loss and stimulate the recovery of hippocampal immature neurons in brain-injured mice. METHODS In a series of studies utilizing a well-established contusion brain injury model, PEG-IGF-1 was administered subcutaneously after injury. Serum levels of PEG were verified using ELISA and histological staining was used to investigate numbers of degenerating neurons and cortical contusion size at 24 h after injury. Immunofluorescent staining was used to evaluate numbers of immature neurons at 10 d after injury. RESULTS Although subcutaneous injections of PEG-IGF-1 increased serum IGF-1 levels in a dose-dependent manner, no effects were observed on cortical contusion size, neurodegeneration within the dentate gyrus, or recovery of hippocampal immature neuron numbers. CONCLUSIONS In contrast to its efficacy in rodent models of neurodegenerative diseases, PEG- IGF-1 was not effective in ameliorating early neuronal loss after contusion brain trauma.
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Affiliation(s)
- Diana M Sama
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Shaun W Carlson
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY, USA.,Present address: Department of Neurological Surgery, Safar Center for Resuscitation Research, University of Pittsburgh, PA, USA
| | - Binoy Joseph
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY, USA
| | - Stefanie Saenger
- Roche Pharma Research and Early Development (pRED), Roche Innovation Center Basel, Grenzacherstrasse, Basel, Switzerland
| | - Friedrich Metzger
- Roche Pharma Research and Early Development (pRED), Roche Innovation Center Basel, Grenzacherstrasse, Basel, Switzerland.,Versameb AG, Peter Merian-Strasse, Basel, Switzerland
| | - Kathryn E Saatman
- Spinal Cord and Brain Injury Research Center, University of Kentucky College of Medicine, Lexington, KY, USA
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14
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Dong HJ, Zhao ML, Li XH, Chen YS, Wang J, Chen MB, Wu S, Wang JJ, Liang HQ, Sun HT, Tu Y, Zhang S, Xiong J, Chen C. Hypothermia-Modulating Matrix Elasticity of Injured Brain Promoted Neural Lineage Specification of Mesenchymal Stem Cells. Neuroscience 2018; 377:1-11. [DOI: 10.1016/j.neuroscience.2018.02.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 02/06/2018] [Accepted: 02/08/2018] [Indexed: 12/15/2022]
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15
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Zhao ML, Chen SJ, Li XH, Wang LN, Chen F, Zhong SJ, Yang C, Sun SK, Li JJ, Dong HJ, Dong YQ, Wang Y, Chen C. Optical Depolarization of DCX-Expressing Cells Promoted Cognitive Recovery and Maturation of Newborn Neurons via the Wnt/β-Catenin Pathway. J Alzheimers Dis 2018; 63:303-318. [PMID: 29614674 DOI: 10.3233/jad-180002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Ming-Liang Zhao
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Shi-Jin Chen
- Department of Cardiology, Yichang Second People’s Hospital, Hubei, China
| | - Xiao-Hong Li
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Li-Na Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Feng Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Shi-Jiang Zhong
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Cheng Yang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Sheng-Kai Sun
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Jian-Jun Li
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Hua-Jiang Dong
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Yue-Qing Dong
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Yi Wang
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
| | - Chong Chen
- Tianjin Key Laboratory of Neurotrauma Repair, Pingjin Hospital Brain Center, Logistics University of Chinese People’s Armed Police Forces, Tianjin, China
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16
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Establishment of an ideal time window model in hypothermic-targeted temperature management after traumatic brain injury in rats. Brain Res 2017. [PMID: 28629741 DOI: 10.1016/j.brainres.2017.06.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Although hypothermic-targeted temperature management (HTTM) holds great potential for the treatment of traumatic brain injury (TBI), translation of the efficacy of hypothermia from animal models to TBI patientshas no entire consistency. This study aimed to find an ideal time window model in experimental rats which was more in accordance with clinical practice through the delayed HTTM intervention. Sprague-Dawley rats were subjected to unilateral cortical contusion injury and received therapeutic hypothermia at 15mins, 2 h, 4 h respectively after TBI. The neurological function was evaluated with the modified neurological severity score and Morris water maze test. The brain edema and morphological changes were measured with the water content and H&E staining. Brain sections were immunostained with antibodies against DCX (a neuroblast marker) and GFAP (an astrocyte marker). The apoptosis levels in the ipsilateral hippocampi and cortex were examined with antibodies against the apoptotic proteins Bcl-2, Bax, and cleaved caspase-3 by the immunofluorescence and western blotting. The results indicated that each hypothermia therapy group could improve neurobehavioral and cognitive function, alleviate brain edema and reduce inflammation. Furthermore, we observed that therapeutic hypothermia increased DCX expression, decreased GFAP expression, upregulated Bcl-2 expression and downregulated Bax and cleaved Caspase-3 expression. The above results suggested that HTTM at 2h or even at 4h post-injury revealed beneficial brain protection similarly, despite the best effect at 15min post-injury. These findings may provide relatively ideal time window models, further making the following experimental results more credible and persuasive.
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17
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Zarei-Ghanavati S, Nosrat N, Morovatdar N, Abrishami M, Eghbali P. Efficacy of corneal cooling on postoperative pain management after photorefractive keratectomy: A contralateral eye randomized clinical trial. J Curr Ophthalmol 2017; 29:264-269. [PMID: 29270472 PMCID: PMC5735231 DOI: 10.1016/j.joco.2017.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 04/19/2017] [Accepted: 04/21/2017] [Indexed: 01/23/2023] Open
Abstract
Purpose To compare chilled and room temperature balanced salt solution (BSS) and bandage contact lens (BCL) on post photorefractive keratectomy (PRK) pain. Methods In a prospective, single-masked, controlled eye study, one hundred eyes of fifty patients were divided into two groups which received room temperature or chilled BSS and BCL in each eye, and compared for post-PRK pain. Three different pain evaluation systems were used to evaluate pain between the groups at 1 and 6 h and days 1, 2, 3, 5, and 7, postoperatively. Results 15 patients were male (30%), and 35 were female (70%). The mean age was 29 ± 5 (20–40) y/o. The mean spherical equivalent (SE) of preoperative refractive error in both groups was not statistically significantly different (−4.18 ± 1.5 in chilled and −4.19 ± 1.7 in room-temperature groups, respectively; P = 0.94). The mean time of epithelial healing was 6.16 ± 1.7 (3–13) days in the chilled and 6.10 ± 1.59 (3–12) in the room temperature group (P = 0.32). Best corrected visual acuity (BCVA) at 1 month was 0.013 ± 0.03 (0–0.22) logarithm of the minimum angle of resolution (logMAR) in the chilled group and 0.014 ± 0.04 (0–0.22) logMAR in the room temperature group, postoperatively (P = 0.84). No statistically significant difference was found between the two groups by any of the three pain scoring systems. No clinically important corneal haziness was found in the groups during follow-up. Conclusion Chilled BSS and BCL do not seem to be superior to room temperature in reducing post-PRK pain.
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Affiliation(s)
| | - Nastaran Nosrat
- Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Negar Morovatdar
- Clinical Research Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mojtaba Abrishami
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Pardis Eghbali
- Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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