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Hou Y, Liang C, Sui L, Li Y, Wang K, Li X, Zheng K, Su H, Xie D, Lin D, Guo D, Wang L. Curculigoside Regulates Apoptosis and Oxidative Stress Against Spinal Cord Injury by Modulating the Nrf-2/NQO-1 Signaling Pathway In Vitro and In Vivo. Mol Neurobiol 2024:10.1007/s12035-024-04409-9. [PMID: 39230866 DOI: 10.1007/s12035-024-04409-9] [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: 10/05/2023] [Accepted: 07/23/2024] [Indexed: 09/05/2024]
Abstract
Spinal cord injury (SCI) is a severe neurological disorder that can lead to paralysis or death. Oxidative stress during SCI is a critical phase causing extensive nerve cell damage and apoptosis, thereby impairing spinal cord healing. Thus, a primary goal of SCI drug therapy is to mitigate oxidative stress. Curculigoside (CUR), a phenolic glucoside extracted from the dried root and rhizome of Curculigo orchioides Gaertn, possesses neuroprotective and antioxidant properties. This study aimed to investigate whether CUR effectively promotes the recovery of spinal cord tissue following SCI and elucidate its mechanism. We employed a hydrogen peroxide (H2O2)-induced PC12 cell model and an SCI rat model to observe the effects of CUR on oxidation and apoptosis. The results demonstrated that CUR significantly reduced the expression of apoptosis-related proteins (Bax and Caspase-3), Annexin V/propidium iodide (PI), and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL), while increasing the expression of the anti-apoptotic protein Bcl-2. Moreover, CUR effectively enhanced levels of antioxidants (glutathione [GSH)] and decreased reactive oxygen species (ROS) in vitro. Furthermore, CUR facilitated functional recovery through its anti-apoptotic and anti-oxidative stress effects on spinal cord tissues in SCI rats. These effects were mediated via the Nrf2/NQO1 signaling pathway. Therefore, our study showed that CUR acted as an anti-apoptotic and anti-oxidative stress agent, inhibiting astrocyte activation and promoting neuronal reconstruction and functional recovery. These findings may contribute significantly to the development of SCI treatments and advance the field of SCI drug therapy.
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Affiliation(s)
- Yu Hou
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Dampness, Syndrome of Chinese Medicine, Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Chaolun Liang
- Department of Orthopedics (Joint Surgery), Guangdong Province Hospital of Chinese Medicine, Zhuhai, 519015, Guangdong, China
| | - Lili Sui
- The First Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Yang Li
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
- State Key Laboratory of Dampness, Syndrome of Chinese Medicine, Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Kai Wang
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Xing Li
- State Key Laboratory of Dampness, Syndrome of Chinese Medicine, Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China.
| | - Kunrui Zheng
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Haitao Su
- State Key Laboratory of Dampness, Syndrome of Chinese Medicine, Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Dianweng Xie
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Dingkun Lin
- State Key Laboratory of Dampness, Syndrome of Chinese Medicine, Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China
| | - Da Guo
- State Key Laboratory of Dampness, Syndrome of Chinese Medicine, Department of Orthopedic Surgery, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120, Guangdong, China.
| | - Le Wang
- Department of Spine Surgery, Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510080, Guangdong, China.
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Geng Y, Lou J, Wu J, Tao Z, Yang N, Kuang J, Wu Y, Zhang J, Xiang L, Shi J, Cai Y, Wang X, Chen J, Xiao J, Zhou K. NEMO-Binding Domain/IKKγ Inhibitory Peptide Alleviates Neuronal Pyroptosis in Spinal Cord Injury by Inhibiting ASMase-Induced Lysosome Membrane Permeabilization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405759. [PMID: 39225315 DOI: 10.1002/advs.202405759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 08/16/2024] [Indexed: 09/04/2024]
Abstract
A short peptide termed NEMO-binding domain (NBD) peptide has an inhibitory effect on nuclear factor kappa-B (NF-κB). Despite its efficacy in inhibiting inflammatory responses, the precise neuroprotective mechanisms of NBD peptide in spinal cord injury (SCI) remain unclear. This study aims to determine whether the pyroptosis-related aspects involved in the neuroprotective effects of NBD peptide post-SCI.Using RNA sequencing, the molecular mechanisms of NBD peptide in SCI are explored. The evaluation of functional recovery is performed using the Basso mouse scale, Nissl staining, footprint analysis, Masson's trichrome staining, and HE staining. Western blotting, enzyme-linked immunosorbent assays, and immunofluorescence assays are used to examine pyroptosis, autophagy, lysosomal membrane permeabilization (LMP), acid sphingomyelinase (ASMase), and the NF-κB/p38-MAPK related signaling pathway.NBD peptide mitigated glial scar formation, reduced motor neuron death, and enhanced functional recovery in SCI mice. Additionally, NBD peptide inhibits pyroptosis, ameliorate LMP-induced autophagy flux disorder in neuron post-SCI. Mechanistically, NBD peptide alleviates LMP and subsequently enhances autophagy by inhibiting ASMase through the NF-κB/p38-MAPK/Elk-1/Egr-1 signaling cascade, thereby mitigating neuronal death. NBD peptide contributes to functional restoration by suppressing ASMase-mediated LMP and autophagy depression, and inhibiting pyroptosis in neuron following SCI, which may have potential clinical application value.
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Affiliation(s)
- Yibo Geng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Junsheng Lou
- Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Junnan Wu
- Department of Pharmacy, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, China
| | - Zhichao Tao
- Renji College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Ningning Yang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jiaxuan Kuang
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
| | - Yuzhe Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jiacheng Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Linyi Xiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jingwei Shi
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
| | - Yuepiao Cai
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325027, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jiaoxiang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jian Xiao
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
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Coyoy-Salgado A, Segura-Uribe J, Salgado-Ceballos H, Castillo-Mendieta T, Sánchez-Torres S, Freyermuth-Trujillo X, Orozco-Barrios C, Orozco-Suarez S, Feria-Romero I, Pinto-Almazán R, Moralí de la Brena G, Guerra-Araiza C. Evaluating Sex Steroid Hormone Neuroprotection in Spinal Cord Injury in Animal Models: Is It Promising in the Clinic? Biomedicines 2024; 12:1478. [PMID: 39062051 PMCID: PMC11274729 DOI: 10.3390/biomedicines12071478] [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: 04/24/2024] [Revised: 06/11/2024] [Accepted: 06/26/2024] [Indexed: 07/28/2024] Open
Abstract
The primary mechanism of traumatic spinal cord injury (SCI) comprises the initial mechanical trauma due to the transmission of energy to the spinal cord, subsequent deformity, and persistent compression. The secondary mechanism of injury, which involves structures that remained undamaged after the initial trauma, triggers alterations in microvascular perfusion, the liberation of free radicals and neurotransmitters, lipid peroxidation, alteration in ionic concentrations, and the consequent cell death by necrosis and apoptosis. Research in the treatment of SCI has sought to develop early therapeutic interventions that mitigate the effects of these pathophysiological mechanisms. Clinical and experimental evidence has demonstrated the therapeutic benefits of sex-steroid hormone administration after traumatic brain injury and SCI. The administration of estradiol, progesterone, and testosterone has been associated with neuroprotective effects, better neurological recovery, and decreased mortality after SCI. This review evaluated evidence supporting hormone-related neuroprotection over SCI and the possible underlying mechanisms in animal models. As neuroprotection has been associated with signaling pathways, the effects of these hormones are observed on astrocytes and microglia, modulating the inflammatory response, cerebral blood flow, and metabolism, mediating glutamate excitotoxicity, and their antioxidant effects. Based on the current evidence, it is essential to analyze the benefit of sex steroid hormone therapy in the clinical management of patients with SCI.
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Affiliation(s)
- Angélica Coyoy-Salgado
- CONAHCyT-Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - Julia Segura-Uribe
- Subdirección de Gestión de la Investigación, Hospital Infantil de México Federico Gómez, Secretaría de Salud, Mexico City 06720, Mexico;
| | - Hermelinda Salgado-Ceballos
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (H.S.-C.); (T.C.-M.); (S.S.-T.); (S.O.-S.)
| | - Tzayaka Castillo-Mendieta
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (H.S.-C.); (T.C.-M.); (S.S.-T.); (S.O.-S.)
| | - Stephanie Sánchez-Torres
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (H.S.-C.); (T.C.-M.); (S.S.-T.); (S.O.-S.)
| | - Ximena Freyermuth-Trujillo
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (H.S.-C.); (T.C.-M.); (S.S.-T.); (S.O.-S.)
| | - Carlos Orozco-Barrios
- CONAHCyT-Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico;
| | - Sandra Orozco-Suarez
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (H.S.-C.); (T.C.-M.); (S.S.-T.); (S.O.-S.)
| | - Iris Feria-Romero
- Unidad de Investigación Médica en Enfermedades Neurológicas, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (H.S.-C.); (T.C.-M.); (S.S.-T.); (S.O.-S.)
| | - Rodolfo Pinto-Almazán
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Mexico City 11340, Mexico
| | - Gabriela Moralí de la Brena
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico
| | - Christian Guerra-Araiza
- Unidad de Investigación Médica en Farmacología, Hospital de Especialidades Dr. Bernardo Sepúlveda, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico
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Zhang H, Chen Y, Li F, Wu C, Cai W, Ye H, Su H, He M, Yang L, Wang X, Zhou K, Ni W. Elamipretide alleviates pyroptosis in traumatically injured spinal cord by inhibiting cPLA2-induced lysosomal membrane permeabilization. J Neuroinflammation 2023; 20:6. [PMID: 36609266 PMCID: PMC9825014 DOI: 10.1186/s12974-023-02690-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 01/02/2023] [Indexed: 01/09/2023] Open
Abstract
Spinal cord injury (SCI) is a devastating injury that may result in permanent motor impairment. The active ingredients of medications are unable to reach the affected area due to the blood‒brain barrier. Elamipretide (SS-31) is a new and innovative aromatic cationic peptide. Because of its alternating aromatic and cationic groups, it freely crosses the blood‒brain barrier. It is also believed to decrease inflammation and protect against a variety of neurological illnesses. This study explored the therapeutic value of SS-31 in functional recovery after SCI and its possible underlying mechanism. A spinal cord contusion injury model as well as the Basso Mouse Scale, footprint assessment, and inclined plane test were employed to assess how well individuals could function following SCI. The area of glial scarring, the number of dendrites, and the number of synapses after SCI were confirmed by HE, Masson, MAP2, and Syn staining. Western blotting, immunofluorescence, and enzyme-linked immunosorbent assays were employed to examine the expression levels of pyroptosis-, autophagy-, lysosomal membrane permeabilization (LMP)- and MAPK signalling-related proteins. The outcomes showed that SS-31 inhibited pyroptosis, enhanced autophagy and attenuated LMP in SCI. Mechanistically, we applied AAV vectors to upregulate Pla2g4A in vivo and found that SS-31 enhanced autophagy and attenuated pyroptosis and LMP by inhibiting phosphorylation of cPLA2. Ultimately, we applied asiatic acid (a p38-MAPK agonist) to test whether SS-31 regulated cPLA2 partially through the MAPK-P38 signalling pathway. Our group is the first to suggest that SS-31 promotes functional recovery partially by inhibiting cPLA2-mediated autophagy impairment and preventing LMP and pyroptosis after SCI, which may have potential clinical application value.
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Affiliation(s)
- Haojie Zhang
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Yituo Chen
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Feida Li
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Chenyu Wu
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Wanta Cai
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Hantao Ye
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Haohan Su
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Mingjun He
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Liangliang Yang
- grid.268099.c0000 0001 0348 3990School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035 Zhejiang China
| | - Xiangyang Wang
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Kailiang Zhou
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
| | - Wenfei Ni
- grid.417384.d0000 0004 1764 2632Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990The Second School of Medicine, Wenzhou Medical University, Wenzhou, 325000 Zhejiang China ,grid.268099.c0000 0001 0348 3990Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, 325000 Zhejiang China
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Daneri-Becerra C, Patiño-Gaillez MG, Galigniana MD. Proof that the high molecular weight immunophilin FKBP52 mediates the in vivo neuroregenerative effect of the macrolide FK506. Biochem Pharmacol 2020; 182:114204. [PMID: 32828804 DOI: 10.1016/j.bcp.2020.114204] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/17/2020] [Accepted: 08/17/2020] [Indexed: 12/31/2022]
Abstract
The immunosuppressant drug FK506 (or tacrolimus) is a macrolide that binds selectively to immunophilins belonging to the FK506-binding protein (FKBP) subfamily, which are abundantly expressed proteins in neurons of the peripheral and central nervous systems. Interestingly, it has been reported that FK506 increases neurite outgrowth in cell cultures, implying a potential impact in putative treatments of neurodegenerative disorders and injuries of the nervous system. Nonetheless, the mechanism of action of this compound is poorly understood and remains to be elucidated, with the only certainty that its neurotrophic effect is independent of its primary immunosuppressant activity. In this study it is demonstrated that FK506 shows efficient neurotrophic action in vitro and profound effects on the recovery of locomotor activity, behavioural features, and erectile function of mice that underwent surgical spinal cord injury. The recovery of the locomotor activity was studied in knock-out mice for either immunophilin, FKBP51 or FKBP52. The experimental evidence demonstrates that the neurotrophic actions of FK506 are the consequence of its binding to FKBP52, whereas FK506 interaction with the close-related partner immunophilin FKBP51 antagonises the function of FKBP52. Importantly, our study also demonstrates that other immunophilins do not replace FKBP52. It is concluded that the final biological response is the resulting outcome of the drug binding to both immunophilins, FKBP51 and FKBP52, the latter being the one that commands the dominant neurotrophic action in vivo.
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Affiliation(s)
| | | | - Mario D Galigniana
- Instituto de Biología y Medicina Experimental (IBYME)/CONICET, Buenos Aires, Argentina; Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
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6
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González SL, Coronel MF, Raggio MC, Labombarda F. Progesterone receptor-mediated actions and the treatment of central nervous system disorders: An up-date of the known and the challenge of the unknown. Steroids 2020; 153:108525. [PMID: 31634489 DOI: 10.1016/j.steroids.2019.108525] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/30/2019] [Accepted: 10/09/2019] [Indexed: 01/04/2023]
Abstract
Progesterone has been shown to exert a wide range of remarkable protective actions in experimental models of central nervous system injury or disease. However, the intimate mechanisms involved in each of these beneficial effects are not fully depicted. In this review, we intend to give the readers a thorough revision on what is known about the participation of diverse receptors and signaling pathways in progesterone-mediated neuroprotective, pro-myelinating and anti-inflammatory outcomes, as well as point out to novel regulatory mechanisms that could open new perspectives in steroid-based therapies.
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Affiliation(s)
- Susana L González
- Laboratorio de Nocicepción y Dolor Neuropático, Instituto de Biología y Medicina Experimental, CONICET, Vuelta de Obligado 2490, C1428ADN Buenos Aires, Argentina; Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, C1121ABG Buenos Aires, Argentina.
| | - María F Coronel
- Laboratorio de Nocicepción y Dolor Neuropático, Instituto de Biología y Medicina Experimental, CONICET, Vuelta de Obligado 2490, C1428ADN Buenos Aires, Argentina; Facultad de Ciencias Biomédicas, Universidad Austral, Presidente Perón 1500, B1629AHJ Pilar, Buenos Aires, Argentina
| | - María C Raggio
- Laboratorio de Nocicepción y Dolor Neuropático, Instituto de Biología y Medicina Experimental, CONICET, Vuelta de Obligado 2490, C1428ADN Buenos Aires, Argentina
| | - Florencia Labombarda
- Laboratorio de Bioquímica Neuroendócrina, Instituto de Biología y Medicina Experimental, CONICET, Vuelta de Obligado 2490, C1428ADN, Buenos Aires, Argentina; Departamento de Bioquímica Humana, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, C1121ABG Buenos Aires, Argentina
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González SL, Meyer L, Raggio MC, Taleb O, Coronel MF, Patte-Mensah C, Mensah-Nyagan AG. Allopregnanolone and Progesterone in Experimental Neuropathic Pain: Former and New Insights with a Translational Perspective. Cell Mol Neurobiol 2018; 39:523-537. [DOI: 10.1007/s10571-018-0618-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 08/31/2018] [Indexed: 02/06/2023]
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8
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Ganzer PD, Beringer CR, Shumsky JS, Nwaobasi C, Moxon KA. Serotonin receptor and dendritic plasticity in the spinal cord mediated by chronic serotonergic pharmacotherapy combined with exercise following complete SCI in the adult rat. Exp Neurol 2018. [PMID: 29526741 DOI: 10.1016/j.expneurol.2018.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Severe spinal cord injury (SCI) damages descending motor and serotonin (5-HT) fiber projections leading to paralysis and serotonin depletion. 5-HT receptors (5-HTRs) subsequently upregulate following 5-HT fiber degeneration, and dendritic density decreases indicative of atrophy. 5-HT pharmacotherapy or exercise can improve locomotor behavior after SCI. One might expect that 5-HT pharmacotherapy acts on upregulated spinal 5-HTRs to enhance function, and that exercise alone can influence dendritic atrophy. In the current study, we assessed locomotor recovery and spinal proteins influenced by SCI and therapy. 5-HT, 5-HT2AR, 5-HT1AR, and dendritic densities were quantified both early (1 week) and late (9 weeks) after SCI, and also following therapeutic interventions (5-HT pharmacotherapy, bike therapy, or a combination). Interestingly, chronic 5-HT pharmacotherapy largely normalized spinal 5-HTR upregulation following injury. Improvement in locomotor behavior was not correlated to 5-HTR density. These results support the hypothesis that chronic 5-HT pharmacotherapy can mediate recovery following SCI, despite acting on largely normal spinal 5-HTR levels. We next assessed spinal dendritic plasticity and its potential role in locomotor recovery. Single therapies did not normalize the loss of dendritic density after SCI. Groups displaying significantly atrophied dendritic processes were rarely able to achieve weight supported open-field locomotion. Only a combination of 5-HT pharmacotherapy and bike therapy enabled significant open-field weigh-supported stepping, mediated in part by restoring spinal dendritic density. These results support the use of combined therapies to synergistically impact multiple markers of spinal plasticity and improve motor recovery.
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Affiliation(s)
- Patrick D Ganzer
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, United States.
| | - Carl R Beringer
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, United States
| | - Jed S Shumsky
- Department of Neurobiology and Anatomy, Drexel University College of Medicine, 2900 Queen Lane, Philadelphia, PA 19129, United States
| | - Chiemela Nwaobasi
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, United States
| | - Karen A Moxon
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut St., Philadelphia, PA 19104, United States; Department of Neurobiology and Anatomy, Drexel University College of Medicine, 2900 Queen Lane, Philadelphia, PA 19129, United States
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9
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Yang Z, Xie W, Ju F, khan A, Zhang S. In vivo two-photon imaging reveals a role of progesterone in reducing axonal dieback after spinal cord injury in mice. Neuropharmacology 2017; 116:30-37. [DOI: 10.1016/j.neuropharm.2016.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 11/29/2016] [Accepted: 12/09/2016] [Indexed: 01/10/2023]
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10
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Samantaray S, Das A, Matzelle DC, Yu SP, Wei L, Varma A, Ray SK, Banik NL. Administration of low dose estrogen attenuates gliosis and protects neurons in acute spinal cord injury in rats. J Neurochem 2016; 136:1064-73. [PMID: 26662641 DOI: 10.1111/jnc.13464] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 11/23/2015] [Accepted: 11/25/2015] [Indexed: 11/29/2022]
Abstract
Spinal cord injury (SCI) is a debilitating condition with neurological deficits and loss of motor function that, depending on the severity, may lead to paralysis. The only treatment currently available is methylprednisolone, which is widely used and renders limited efficacy in SCI. Therefore, other therapeutic agents must be developed. The neuroprotective efficacy of estrogen in SCI was studied with a pre-clinical and pro-translational perspective. Acute SCI was induced in rats that were treated with low doses of estrogen (1, 5, 10, or 100 μg/kg) and compared with vehicle-treated injured rats or laminectomy control (sham) rats at 48 h post-SCI. Changes in gliosis and other pro-inflammatory responses, expression and activity of proteolytic enzymes (e.g., calpain, caspase-3), apoptosis of neurons in SCI, and cell death were monitored via Western blotting and immunohistochemistry. Negligible pro-inflammatory responses or proteolytic events and very low levels of neuronal death were found in sham rats. In contrast, vehicle-treated SCI rats showed profound pro-inflammatory responses with reactive gliosis, elevated expression and activity of calpain and caspase-3, elevated Bax:Bcl-2 ratio, and high levels of neuronal death in lesion and caudal regions of the injured spinal cord. Estrogen treatment at each dose reduced pro-inflammatory and proteolytic activities and protected neurons in the caudal penumbra in acute SCI. Estrogen treatment at 10 μg was found to be as effective as 100 μg in ameliorating the above parameters in injured animals. Results from this investigation indicated that estrogen at a low dose could be a promising therapeutic agent for treating acute SCI. Experimental studies with low dose estrogen therapy in acute spinal cord injury (SCI) demonstrated the potential for multi-active beneficial outcomes. Estrogen has been found to ameliorate several degenerative pathways following SCI. Thus, such early protective effects may even lead to functional recovery in long term injury. Studies are underway in chronic SCI in a follow up manuscript.
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Affiliation(s)
- Supriti Samantaray
- Department of Neurology and Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Arabinda Das
- Department of Neurology and Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Denise C Matzelle
- Department of Neurology and Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Shan P Yu
- Department of Anesthesia, Emory University School of Medicine, Atlanta, GA, USA
| | - Ling Wei
- Department of Anesthesia, Emory University School of Medicine, Atlanta, GA, USA
| | - Abhay Varma
- Department of Neurology and Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Swapan K Ray
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, South Carolina, USA
| | - Naren L Banik
- Department of Neurology and Neurosurgery, Medical University of South Carolina, Charleston, South Carolina, USA.,Ralph H. Johnson Veterans Administration Medical Center, Charleston, South Carolina, USA
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11
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Hansberg-Pastor V, González-Arenas A, Piña-Medina AG, Camacho-Arroyo I. Sex Hormones Regulate Cytoskeletal Proteins Involved in Brain Plasticity. Front Psychiatry 2015; 6:165. [PMID: 26635640 PMCID: PMC4653291 DOI: 10.3389/fpsyt.2015.00165] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/02/2015] [Indexed: 01/22/2023] Open
Abstract
In the brain of female mammals, including humans, a number of physiological and behavioral changes occur as a result of sex hormone exposure. Estradiol and progesterone regulate several brain functions, including learning and memory. Sex hormones contribute to shape the central nervous system by modulating the formation and turnover of the interconnections between neurons as well as controlling the function of glial cells. The dynamics of neuron and glial cells morphology depends on the cytoskeleton and its associated proteins. Cytoskeletal proteins are necessary to form neuronal dendrites and dendritic spines, as well as to regulate the diverse functions in astrocytes. The expression pattern of proteins, such as actin, microtubule-associated protein 2, Tau, and glial fibrillary acidic protein, changes in a tissue-specific manner in the brain, particularly when variations in sex hormone levels occur during the estrous or menstrual cycles or pregnancy. Here, we review the changes in structure and organization of neurons and glial cells that require the participation of cytoskeletal proteins whose expression and activity are regulated by estradiol and progesterone.
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Affiliation(s)
- Valeria Hansberg-Pastor
- Departamento de Biología, Facultad de Química, Universidad Nacional Autónoma de México , Mexico City , Mexico
| | - Aliesha González-Arenas
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México , Mexico City , Mexico
| | - Ana Gabriela Piña-Medina
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México , Mexico City , Mexico
| | - Ignacio Camacho-Arroyo
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México , Mexico City , Mexico
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12
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Sui P, Watanabe H, Ossipov MH, Bakalkin G, Artemenko K, Bergquist J. Proteomics of Neuropathic Pain: Proteins and Signaling Pathways Affected in a Rat Model. J Proteome Res 2014; 13:3957-65. [DOI: 10.1021/pr500241q] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Michael H. Ossipov
- Department
of Pharmacology, University of Arizona Health Sciences Center, 1501
North Campbell Avenue, Tucson, Arizona 85724, United States
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13
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Elkabes S, Nicot AB. Sex steroids and neuroprotection in spinal cord injury: a review of preclinical investigations. Exp Neurol 2014; 259:28-37. [PMID: 24440641 DOI: 10.1016/j.expneurol.2014.01.008] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Revised: 12/25/2013] [Accepted: 01/04/2014] [Indexed: 11/30/2022]
Abstract
Spinal cord injury (SCI) is a debilitating condition that affects motor, sensory and autonomic functions. Subsequent to the first mechanical trauma, secondary events, which include inflammation and glial activation, exacerbate tissue damage and worsen functional deficits. Although these secondary injury mechanisms are amenable to therapeutic interventions, the efficacy of current approaches is inadequate. Further investigations are necessary to implement new therapies that can protect neural cells and attenuate some of the detrimental effects of inflammation while promoting regeneration. Studies on different animal models of SCI indicated that sex steroids, especially 17β-estradiol and progesterone, exert neuroprotective, anti-apoptotic and anti-inflammatory effects, ameliorate tissue sparing and improve functional deficits in SCI. As sex steroid receptors are expressed in a variety of cells including neurons, glia and immune system-related cells which infiltrate the injury epicenter, sex steroids could impact multiple processes simultaneously and in doing so, influence the outcomes of SCI. However, the translation of these pre-clinical findings into the clinical setting presents challenges such as the narrow therapeutic time window of sex steroid administration, the diversity of treatment regimens that have been employed in animal studies and the lack of sufficient information regarding the persistence of the effects in chronic SCI. The current review will summarize some of the major findings in this field and will discuss the challenges associated with the implementation of sex steroids as a promising treatment in human SCI.
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Affiliation(s)
- Stella Elkabes
- The Reynolds Family Spine Laboratory, Department of Neurological Surgery, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ 07103, USA.
| | - Arnaud B Nicot
- UMR 1064, INSERM, Nantes, France; Faculté de Médecine, Université de Nantes, France; ITUN, CHU de Nantes, France
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14
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Deutsch ER, Espinoza TR, Atif F, Woodall E, Kaylor J, Wright DW. Progesterone's role in neuroprotection, a review of the evidence. Brain Res 2013; 1530:82-105. [PMID: 23872219 DOI: 10.1016/j.brainres.2013.07.014] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 07/04/2013] [Accepted: 07/08/2013] [Indexed: 10/26/2022]
Abstract
The sex hormone progesterone has been shown to improve outcomes in animal models of a number of neurologic diseases, including traumatic brain injury, ischemia, spinal cord injury, peripheral nerve injury, demyelinating disease, neuromuscular disorders, and seizures. Evidence suggests it exerts its neuroprotective effects through several pathways, including reducing edema, improving neuronal survival, and modulating inflammation and apoptosis. In this review, we summarize the functional outcomes and pathophysiologic mechanisms attributed to progesterone treatment in neurologic disease. We then comment on the breadth of evidence for the use of progesterone in each neurologic disease family. Finally, we provide support for further human studies using progesterone to treat several neurologic diseases.
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Affiliation(s)
- Eric R Deutsch
- Emergency Neurosciences, Department of Emergency Medicine, Emory University School of Medicine, 49 Jesse Hill Jr. Drive, FOB Suite 126, Atlanta, GA 30303, USA.
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15
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Lee DH, Ahn JH, Park JH, Yan BC, Cho JH, Kim IH, Lee JC, Jang SH, Lee MH, Hwang IK, Moon SM, Lee B, Cho JH, Shin HC, Kim JS, Won MH. Comparison of Expression of Inflammatory Cytokines in the Spinal Cord Between Young Adult and Aged Beagle Dogs. Cell Mol Neurobiol 2013; 33:615-24. [DOI: 10.1007/s10571-013-9915-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Accepted: 01/30/2013] [Indexed: 01/24/2023]
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16
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Target-dependence of sensory neurons: An ultrastructural comparison of axotomised dorsal root ganglion neurons with allowed or denied reinnervation of peripheral targets. Neuroscience 2013; 228:163-78. [DOI: 10.1016/j.neuroscience.2012.10.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Revised: 09/01/2012] [Accepted: 10/05/2012] [Indexed: 12/21/2022]
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17
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Labombarda F, González S, Lima A, Roig P, Guennoun R, Schumacher M, De Nicola AF. Progesterone attenuates astro- and microgliosis and enhances oligodendrocyte differentiation following spinal cord injury. Exp Neurol 2011; 231:135-46. [DOI: 10.1016/j.expneurol.2011.06.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 05/09/2011] [Accepted: 06/04/2011] [Indexed: 11/26/2022]
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18
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Kwon BK, Okon E, Hillyer J, Mann C, Baptiste D, Weaver LC, Fehlings MG, Tetzlaff W. A systematic review of non-invasive pharmacologic neuroprotective treatments for acute spinal cord injury. J Neurotrauma 2011; 28:1545-88. [PMID: 20146558 PMCID: PMC3143410 DOI: 10.1089/neu.2009.1149] [Citation(s) in RCA: 194] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
An increasing number of therapies for spinal cord injury (SCI) are emerging from the laboratory and seeking translation into human clinical trials. Many of these are administered as soon as possible after injury with the hope of attenuating secondary damage and maximizing the extent of spared neurologic tissue. In this article, we systematically review the available pre-clinical research on such neuroprotective therapies that are administered in a non-invasive manner for acute SCI. Specifically, we review treatments that have a relatively high potential for translation due to the fact that they are already used in human clinical applications, or are available in a form that could be administered to humans. These include: erythropoietin, NSAIDs, anti-CD11d antibodies, minocycline, progesterone, estrogen, magnesium, riluzole, polyethylene glycol, atorvastatin, inosine, and pioglitazone. The literature was systematically reviewed to examine studies in which an in-vivo animal model was utilized to assess the efficacy of the therapy in a traumatic SCI paradigm. Using these criteria, 122 studies were identified and reviewed in detail. Wide variations exist in the animal species, injury models, and experimental designs reported in the pre-clinical literature on the therapies reviewed. The review highlights the extent of investigation that has occurred in these specific therapies, and points out gaps in our knowledge that would be potentially valuable prior to human translation.
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Affiliation(s)
- Brian K Kwon
- University of British Columbia, Combined Neurosurgical and Orthopaedic Spine Program, Department of Orthopaedics, Vancouver, British Columbia, Canada.
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19
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Doonan F, O’Driscoll C, Kenna P, Cotter TG. Enhancing survival of photoreceptor cells in vivo using the synthetic progestin Norgestrel. J Neurochem 2011; 118:915-27. [DOI: 10.1111/j.1471-4159.2011.07354.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Short- and long-term treatment with estradiol or progesterone modifies the expression of GFAP, MAP2 and Tau in prefrontal cortex and hippocampus. Life Sci 2011; 89:123-8. [PMID: 21683086 DOI: 10.1016/j.lfs.2011.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Revised: 03/16/2011] [Accepted: 05/25/2011] [Indexed: 11/21/2022]
Abstract
AIMS We analyzed the effects of the short- and long-term administration of estradiol (E2) or progesterone (P4) after ovariectomy on the expression of MAP2, Tau and GFAP in prefrontal cortex and hippocampus. MAIN METHODS Sprague Dawley rats were ovariectomized and immediately treated with E2 or P4 for 2 or 18 weeks. At the end of treatments, hippocampus and prefrontal cortex were excised, proteins were extracted and MAP2, Tau and GFAP were analyzed by Western blot. KEY FINDINGS MAP2 and Tau content was not modified by E2 in the prefrontal cortex. On the contrary, P4 decreased MAP2 content after a short-term treatment, while it increased that of MAP2 and TAU in this brain region after a long-term treatment. E2 increased MAP2 content in hippocampus. In this region, short-term administration of P4 increased that of MAP2. GFAP content was diminished after a long-term administration of P4 in hippocampus. SIGNIFICANCE Current data emphasize the importance of short- and long-term sex steroid treatment on neuronal and glial cytoskeletal proteins expression.
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21
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Pietranera L, Bellini M, Arévalo M, Goya R, Brocca M, Garcia-Segura L, De Nicola A. Increased aromatase expression in the hippocampus of spontaneously hypertensive rats: effects of estradiol administration. Neuroscience 2011; 174:151-9. [DOI: 10.1016/j.neuroscience.2010.11.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 11/04/2010] [Accepted: 11/20/2010] [Indexed: 12/26/2022]
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22
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Borowicz KK, Piskorska B, Banach M, Czuczwar SJ. Neuroprotective actions of neurosteroids. Front Endocrinol (Lausanne) 2011; 2:50. [PMID: 22649375 PMCID: PMC3355955 DOI: 10.3389/fendo.2011.00050] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Accepted: 09/22/2011] [Indexed: 12/24/2022] Open
Abstract
Neurosteroids were initially defined as steroid hormones locally synthesized within the nervous tissue. Subsequently, they were described as steroid hormone derivatives that devoid hormonal action but still affect neuronal excitability through modulation of ionotropic receptors. Neurosteroids are further subdivided into natural (produced in the brain) and synthetic. Some authors distinguish between hormonal and regular neurosteroids in the group of natural ones. The latter group, including hormone metabolites like allopregnanolone or tetrahydrodeoxycorticosterone, is devoid of hormonal activity. Both hormones and their derivatives share, however, most of the physiological functions. It is usually very difficult to distinguish the effects of hormones and their metabolites. All these substances may influence seizure phenomena and exhibit neuroprotective effects. Neuroprotection offered by steroid hormones may be realized in both genomic and non-genomic mechanisms and involve regulation of the pro- and anti-apoptotic factors expression, intracellular signaling pathways, neurotransmission, oxidative, and inflammatory processes. Since regular neurosteroids show no affinity for steroid receptors, they may act only in a non-genomic mode. Multiple studies have been conducted so far to show efficacy of neurosteroids in the treatment of the central and peripheral nervous system injury, ischemia, neurodegenerative diseases, or seizures. In this review we focused primarily on neurosteroid mechanisms of action and their role in the process of neurodegeneration. Most of the data refers to results obtained in experimental studies. However, it should be realized that knowledge about neuroactive steroids remains still incomplete and requires confirmation in clinical conditions.
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Affiliation(s)
- Kinga K. Borowicz
- Experimental Neuropathophysiology Unit, Department of Pathophysiology, Medical UniversityLublin, Poland
| | - Barbara Piskorska
- Experimental Neuropathophysiology Unit, Department of Pathophysiology, Medical UniversityLublin, Poland
| | - Monika Banach
- Experimental Neuropathophysiology Unit, Department of Pathophysiology, Medical UniversityLublin, Poland
| | - Stanislaw J. Czuczwar
- Department of Pathophysiology, Medical UniversityLublin, Poland
- Department of Physiopathology, Institute of Agricultural MedicineLublin, Poland
- *Correspondence: Stanislaw J. Czuczwar, Department of Pathophysiology, Medical University, Jaczewskiego 8, PL-20-090 Lublin, Poland. e-mail:
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Richendrfer HA, Swann JM. Neuronal composition of the magnocellular division of the medial preoptic nucleus (MPN mag) is sex specific in the Syrian hamster (Mesocricetus auratus). Brain Res 2010; 1351:97-103. [PMID: 20615396 DOI: 10.1016/j.brainres.2010.06.068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 06/26/2010] [Accepted: 06/29/2010] [Indexed: 10/19/2022]
Abstract
The magnocellular division of the medial Preoptic nucleus (MPN mag) plays a critical role in the regulation of male sexual behavior in the hamster. Results from previous studies indicated that the number of neurons in the MPN mag is greater in males than females but failed to find significant differences in the volume of the nucleus suggesting that other elements in the nucleus may be greater in the female. The results of the present study, using NeuN to identify neurons, are in line with this hypothesis. The data show that (1) neurons in the MPN mag display two distinct phenotypes, those with a single nucleolus and those with multiple nucleoli; (2) the percentage of each phenotype is sex specific, differing over the course of development and (3) there is no sex difference in the number of glial cells at any age. Sex differences in the numbers of each type are correlated with developmental milestones and suggest that morphological changes are influenced by changes in circulating gonadal steroids during development.
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Affiliation(s)
| | - Jennifer M Swann
- Lehigh University, Department of Biological Sciences, Bethlehem, PA, USA.
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Bamford JA, Todd KG, Mushahwar VK. The effects of intraspinal microstimulation on spinal cord tissue in the rat. Biomaterials 2010; 31:5552-63. [PMID: 20430436 DOI: 10.1016/j.biomaterials.2010.03.051] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Accepted: 03/19/2010] [Indexed: 10/19/2022]
Abstract
Intraspinal microstimulation (ISMS) involves the implantation of microwires into the spinal cord below the level of an injury to excite neural networks involved in the control of locomotion in the lower limbs. The goal of this study was to examine the potential spinal cord damage that might occur with chronic ISMS. We employed functional measures of force recruitment and immunohistochemical processing of serial spinal cord sections to evaluate any damage induced by spinal transection, implantation of ISMS arrays, and electrical stimulation of 4h/day for 30 days. Functional measurements showed no change in force recruitment following transection and chronic ISMS, indicating no changes to underlying neural networks. The implantation of sham intraspinal microwires produced a spatially-limited increase in the density of microglia/macrophages and GFAP+ astrocytes adjacent to the microwire tracks, indicating a persistent immune response. Most importantly, these results were not different from those around microwires that were chronically pulsed with charge levels up to 48nC/phase. Likewise, measurements of neuronal density indicated no decrease in neuronal cell bodies in the ventral grey matter surrounding ISMS microwires (243.6/mm2+/-35.3/mm2) compared to tissue surrounding sham microwires (207.8/mm2+/-38.8/mm2). We conclude that the implantation of intraspinal microwires and chronic application of ISMS are well tolerated by spinal cord tissue.
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Affiliation(s)
- Jeremy A Bamford
- Centre for Neuroscience, Faculty of Medicine and Dentistry, 5005 Katz Group-Rexall Centre for Pharmacy and Health Research, University of Alberta, Edmonton, Alberta, Canada
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De Nicola AF, Labombarda F, Gonzalez Deniselle MC, Gonzalez SL, Garay L, Meyer M, Gargiulo G, Guennoun R, Schumacher M. Progesterone neuroprotection in traumatic CNS injury and motoneuron degeneration. Front Neuroendocrinol 2009; 30:173-87. [PMID: 19318112 DOI: 10.1016/j.yfrne.2009.03.001] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 02/27/2009] [Accepted: 03/03/2009] [Indexed: 10/21/2022]
Abstract
Studies on the neuroprotective and promyelinating effects of progesterone in the nervous system are of great interest due to their potential clinical connotations. In peripheral neuropathies, progesterone and reduced derivatives promote remyelination, axonal regeneration and the recovery of function. In traumatic brain injury (TBI), progesterone has the ability to reduce edema and inflammatory cytokines, prevent neuronal loss and improve functional outcomes. Clinical trials have shown that short-and long-term progesterone treatment induces a significant improvement in the level of disability among patients with brain injury. In experimental spinal cord injury (SCI), molecular markers of functional motoneurons become impaired, including brain-derived neurotrophic factor (BDNF) mRNA, Na,K-ATPase mRNA, microtubule-associated protein 2 and choline acetyltransferase (ChAT). SCI also produces motoneuron chromatolysis. Progesterone treatment restores the expression of these molecules while chromatolysis subsided. SCI also causes oligodendrocyte loss and demyelination. In this case, a short progesterone treatment enhances proliferation and differentiation of oligodendrocyte progenitors into mature myelin-producing cells, whereas prolonged treatment increases a transcription factor (Olig1) needed to repair injury-induced demyelination. Progesterone neuroprotection has also been shown in motoneuron neurodegeneration. In Wobbler mice spinal cord, progesterone reverses the impaired expression of BDNF, ChAT and Na,K-ATPase, prevents vacuolar motoneuron degeneration and the development of mitochondrial abnormalities, while functionally increases muscle strength and the survival of Wobbler mice. Multiple mechanisms contribute to these progesterone effects, and the role played by classical nuclear receptors, extra nuclear receptors, membrane receptors, and the reduced metabolites of progesterone in neuroprotection and myelin formation remain an exciting field worth of exploration.
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Affiliation(s)
- Alejandro F De Nicola
- Laboratory of Neuroendocrine Biochemistry, Instituto de Biologia y Medicina Experimental-CONICET, Obligado, Buenos Aires, Argentina.
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