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Zheng Y, Wang N, Chen Z, Shi L, Xu X. Blocking SP/NK1R signaling improves spinal cord hemisection by inhibiting the release of pro-inflammatory cytokines in rabbits. J Spinal Cord Med 2023; 46:848-858. [PMID: 35776091 PMCID: PMC10446800 DOI: 10.1080/10790268.2021.2024029] [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] [Indexed: 10/17/2022] Open
Abstract
OBJECTIVE Incomplete spinal cord injury (SCI) is the most common spinal cord injury in clinic, however its mechanism is still not fully understood. DESIGN We constructed the rabbit spinal cord hemisection (SCH) model and used RT-PCR, western blotting, immunohistochemistry, and immunofluorescence experiments to explore the potential mechanism of SCI. SETTING The sham operation (SH) group, the observation (OB, which is the SCH) group, the OB+ substance p (SP) inhibitor group, the OB + NK1R inhibitor group, the OB + NK1R agonist group and the OB + SP inhibitor + NK1R agonist group. PARTICIPANTS New Zealand white rabbits. INTERVENTIONS Use NK1R inhibitors, NK1R agonists, SP inhibitors to treat the SCH model. OUTCOME MEASURES IL-1β, IKKγ, IL-6 and NF-κB. RESULTS The results showed that nissl bodies, inflammatory cells and SP increased notably in the spinal cord cells of the rabbit SCH model. Through in vivo experiments with SP or NK1R inhibitors or NK1R agonists, we found that inhibiting SP/NK1R signaling can help improve SCH by inhibiting the release of pro-inflammatory cytokines IL-1β, IKKγ, IL-6 and NF-κB. REGISTERED TRIALS Animal experiments were approved by Ruijin Hospital, Shanghai Jiaotong University School of Medicine.
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Affiliation(s)
- Yuehuan Zheng
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Nannan Wang
- Department of Nursing, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People’s Republic of China
| | - Zhe Chen
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Liqiang Shi
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
| | - Xiangyang Xu
- Department of Orthopedics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China
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Furukawa M, Tada H, Raju R, Wang J, Yokoi H, Ikuyo Y, Yamada M, Shikama Y, Matsushita K. Long-Term Capsaicin Administration Ameliorates the Dysfunction and Astrogliosis of the Brain in Aged Mice with Missing Maxillary Molars. Nutrients 2023; 15:nu15112471. [PMID: 37299434 DOI: 10.3390/nu15112471] [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: 03/03/2023] [Revised: 05/13/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023] Open
Abstract
Tooth loss and decreased masticatory function reportedly affect cognitive function; tooth loss allegedly induces astrogliosis and aging of astrocytes in the hippocampus and hypothalamus, which is a response specific to the central nervous system owing to homeostasis in different brain regions. Capsaicin, a component of red peppers, has positive effects on brain disorders in mice. Decreased expression of transient receptor potential vanilloid 1, a receptor of capsaicin, is associated with the development of dementia. In this study, we investigated the effect of capsaicin administration in aged mice (C57BL/6N mice) with reduced masticatory function owing to the extraction of maxillary molars to investigate preventive/therapeutic methods for cognitive decline attributed to age-related masticatory function loss. The results demonstrated that mice with impaired masticatory function showed decreased motor and cognitive function at the behavioral level. At the genetic level, neuroinflammation, microglial activity, and astrogliosis, such as increased glial fibrillary acidic protein levels, were observed in the mouse brain. The mice with extracted molars fed on a diet containing capsaicin for 3 months demonstrated improved behavioral levels and astrogliosis, which suggest that capsaicin is useful in maintaining brain function in cases of poor oral function and prosthetic difficulties.
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Affiliation(s)
- Masae Furukawa
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Hirobumi Tada
- Department of Nutrition, Faculty of Wellness, Shigakkan University, Obu 474-8651, Japan
- Department of Integrative Physiology, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Resmi Raju
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Jingshu Wang
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Haruna Yokoi
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Yoriko Ikuyo
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Mitsuyoshi Yamada
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
- Department of Operative Dentistry, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan
| | - Yosuke Shikama
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
| | - Kenji Matsushita
- Department of Oral Disease Research, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
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Huang CC, Chiu HY, Lee PH, Fang SY, Lin MW, Chen HF, Lee JS. Mitochondrial transplantation attenuates traumatic neuropathic pain, neuroinflammation, and apoptosis in rats with nerve root ligation. Mol Pain 2023; 19:17448069231210423. [PMID: 37845039 PMCID: PMC10605811 DOI: 10.1177/17448069231210423] [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: 04/02/2023] [Revised: 10/02/2023] [Accepted: 10/11/2023] [Indexed: 10/18/2023] Open
Abstract
Traumatic neuropathic pain (TNP) is caused by traumatic damage to the somatosensory system and induces the presentation of allodynia and hyperalgesia. Mitochondrial dysfunction, neuroinflammation, and apoptosis are hallmarks in the pathogenesis of TNP. Recently, mitochondria-based therapy has emerged as a potential therapeutic intervention for diseases related to mitochondrial dysfunction. However, the therapeutic effectiveness of mitochondrial transplantation (MT) on TNP has rarely been investigated. Here, we validated the efficacy of MT in treating TNP. Both in vivo and in vitro TNP models by conducting an L5 spinal nerve ligation in rats and exposing the primary dorsal root ganglion (DRG) neurons to capsaicin, respectively, were applied in this study. The MT was operated by administrating 100 µg of soleus-derived allogeneic mitochondria into the ipsilateral L5 DRG in vivo and the culture medium in vitro. Results showed that the viable transplanted mitochondria migrated into the rats' spinal cord and sciatic nerve. MT alleviated the nerve ligation-induced mechanical and thermal pain hypersensitivity. The nerve ligation-induced glial activation and the expression of pro-inflammatory cytokines and apoptotic markers in the spinal cord were also repressed by MT. Consistently, exogenous mitochondria reversed the capsaicin-induced reduction of mitochondrial membrane potential and expression of pro-inflammatory cytokines and apoptotic markers in the primary DRG neurons in vitro. Our findings suggest that MT mitigates the spinal nerve ligation-induced apoptosis and neuroinflammation, potentially playing a role in providing neuroprotection against TNP.
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Affiliation(s)
- Chi-Chen Huang
- Division of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Hsin-Yi Chiu
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Po-Hsuan Lee
- Division of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Yuan Fang
- Department of Anesthesiology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ming-Wei Lin
- Department of Medical Research, E-Da Hospital and E-Da Cancer Hospital Kaohsiung, Kaohsiung, Taiwan
- Department of Medical Research, I-Shou University College of Medicine, Kaohsiung, Taiwan
| | - Hui-Fang Chen
- Division of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jung-Shun Lee
- Division of Neurosurgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Department of Cell Biology and Anatomy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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Chen S, Guo D, Lei B, Bi J, Yang H. Biglycan protects human neuroblastoma cells from nitric oxide-induced death by inhibiting AMPK-mTOR mediated autophagy and intracellular ROS level. Biotechnol Lett 2020; 42:657-668. [PMID: 31989342 DOI: 10.1007/s10529-020-02818-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 01/22/2020] [Indexed: 02/08/2023]
Abstract
The ubiquitous proteoglycan, biglycan (BGN) acts as an important modulator, regulating key molecular pathways of metabolism and brain function. Autophagy is documented as a defining feature of neurodegeneration in Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD). In the present study, we found that BGN protected neuronal cells from nitric oxide (NO)-induced cell apoptosis. However, it is still unclear that whether the neuroprotective effect of BGN relates to autophagy. Here, we discovered that an NO donor, sodium nitroprusside (SNP) induced autophagy in human SH-SY5Y neuroblastoma cells, including activating LC3B and inhibiting p62. Inhibiting autophagy by 3MA aggravated NO-induced cell death, otherwise promoting autophagy by Rapamycin rescued NO-triggered cell death. Notably, BGN downregulated by NO, significantly protected SH-SY5Y cells against NO-induced neurotoxicity by inhibiting the activation of autophagy-dependent AMPK signaling pathway. Moreover, BGN overexpression also diminished NO-induced the elevation of intracellular reactive oxygen species (ROS) level, but not NO content. These findings suggest that BGN protects neuroblastoma cells from NO-induced death by suppressing autophagy-dependent AMPK-mTOR signaling and intracellular ROS level.
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Affiliation(s)
- Sujuan Chen
- Synthetic Biology Engineering Lab of Henan Province, School of Sciences and Technology, Xinxiang Medical University, Henan, China.
| | - Dandan Guo
- Synthetic Biology Engineering Lab of Henan Province, School of Sciences and Technology, Xinxiang Medical University, Henan, China.,Shangai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences, School of Life Sciences, East China Normal University, Shanghai, China
| | - Bingbing Lei
- School of Sciences and Technology, Xinxiang Medical University, Henan, China
| | - Jiajia Bi
- Synthetic Biology Engineering Lab of Henan Province, School of Sciences and Technology, Xinxiang Medical University, Henan, China
| | - Haijie Yang
- School of Sciences and Technology, Xinxiang Medical University, Henan, China
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Bektur E, Şahin E, Ceyhan E, Donmez DB, Canbek M, Baycu C, Can OD. Beneficial effect of mirtazapine on diabetes-induced hyperalgesia: involvement of TRPV1 and ASIC1 channels in the spinal cord and dorsal root ganglion. Neurol Res 2019; 41:544-553. [PMID: 30822229 DOI: 10.1080/01616412.2019.1580462] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ezgi Bektur
- Histology and Embryology Department, School of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Erhan Şahin
- Histology and Embryology Department, School of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Emre Ceyhan
- Molecular biology department, School of science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Dilek Burukoglu Donmez
- Histology and Embryology Department, School of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Mediha Canbek
- Molecular biology department, School of science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Cengiz Baycu
- Histology and Embryology Department, School of Medicine, Okan University, Istanbul, Turkey
| | - Ozgur Devrim Can
- Pharmacology Department, School of pharmacy, Anadolu University, Eskisehir, Turkey
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Liang X, Shen H, Shi WD, Ren S, Jiang W, Liu H, Yang P, Sun ZY, Lin J, Yang HL. Effect of axial vertical vibration on degeneration of lumbar intervertebral discs in modified bipedal rats: An in-vivo study. ASIAN PAC J TROP MED 2017; 10:714-717. [DOI: 10.1016/j.apjtm.2017.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Revised: 07/10/2017] [Accepted: 07/15/2017] [Indexed: 10/19/2022] Open
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