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Lin K, Zhang Y, Shen Y, Xu Y, Huang M, Liu X. Hydrogen Sulfide can Scavenge Free Radicals to Improve Spinal Cord Injury by Inhibiting the p38MAPK/mTOR/NF-κB Signaling Pathway. Neuromolecular Med 2024; 26:26. [PMID: 38907170 DOI: 10.1007/s12017-024-08794-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2024] [Accepted: 05/31/2024] [Indexed: 06/23/2024]
Abstract
Spinal cord injury (SCI) causes irreversible cell loss and neurological dysfunctions. Presently, there is no an effective clinical treatment for SCI. It can be the only intervention measure by relieving the symptoms of patients such as pain and fever. Free radical-induced damage is one of the validated mechanisms in the complex secondary injury following primary SCI. Hydrogen sulfide (H2S) as an antioxidant can effectively scavenge free radicals, protect neurons, and improve SCI by inhibiting the p38MAPK/mTOR/NF-κB signaling pathway. In this report, we analyze the pathological mechanism of SCI, the role of free radical-mediated the p38MAPK/mTOR/NF-κB signaling pathway in SCI, and the role of H2S in scavenging free radicals and improving SCI.
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Affiliation(s)
- Kexin Lin
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Yong Zhang
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Yanyang Shen
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Yiqin Xu
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Min Huang
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China
| | - Xuehong Liu
- Department of Histology and Embryology, School of Medicine, Shaoxing University, Shaoxing, 312000, Zhejiang Province, China.
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2
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Serag I, Abouzid M, Elmoghazy A, Sarhan K, Alsaad SA, Mohamed RG. An updated systematic review of neuroprotective agents in the treatment of spinal cord injury. Neurosurg Rev 2024; 47:132. [PMID: 38546884 DOI: 10.1007/s10143-024-02372-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 01/03/2024] [Accepted: 03/24/2024] [Indexed: 04/02/2024]
Abstract
This systematic review aims to summarize the findings from all clinical randomized trials assessing the efficacy of potential neuroprotective agents in influencing the outcomes of acute spinal cord injuries (SCI). Following the PRISMA guidelines, we conducted comprehensive searches in four electronic databases (PubMed, Scopus, Cochrane Library, and Web of Science) up to September 5th, 2023. Our analysis included a total of 30 studies. We examined the effects of 15 substances/drugs: methylprednisolone, tirilazad mesylate, erythropoietin, nimodipine, naloxone, Sygen, Rho protein antagonist, granulocyte colony-stimulating factor, autologous macrophages, autologous bone marrow cells, vitamin D, progesterone, riluzole, minocycline, and blood alcohol concentration. Notable improvements in neurological outcomes were observed with progesterone plus vitamin D and granulocyte colony-stimulating factor. In contrast, results for methylprednisolone, erythropoietin, Sygen, Rho Protein, and Riluzole were inconclusive, primarily due to insufficient sample size or outdated evidence. No significant differences were found in the remaining evaluated drugs. Progesterone plus vitamin D, granulocyte colony-stimulating factor, methylprednisolone, Sygen, Rho Protein, and Riluzole may enhance neurological outcomes in acute SCI cases. It is worth noting that different endpoints or additional subgroup analyses may potentially alter the conclusions of individual trials. Therefore, certain SCI grades may benefit more from these treatments than others, while the overall results may remain inconclusive.
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Affiliation(s)
- Ibrahim Serag
- Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Mohamed Abouzid
- Department of Physical Pharmacy and Pharmacokinetics, Faculty of Pharmacy, Poznan University of Medical Sciences, Rokietnicka 3 St, 60-806, Poznan, Poland.
- Doctoral School, Poznan University of Medical Sciences, 60-812, Poznan, Poland.
| | | | - Khalid Sarhan
- Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | | | - Rashad G Mohamed
- Mansoura Manchester Program for Medical Education, Faculty of Medicine, Mansoura University, Mansoura, Egypt
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3
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Chen W, Gao X, Yang W, Xiao X, Pan X, Li H. Htr2b Promotes M1 Microglia Polarization and Neuroinflammation after Spinal Cord Injury via Inhibition of Neuregulin-1/ErbB Signaling. Mol Neurobiol 2024; 61:1643-1654. [PMID: 37747614 DOI: 10.1007/s12035-023-03656-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
The secondary injury of spinal cord injury (SCI) is dominated by neuroinflammation, which was caused by microglia M1 polarization. This study aimed to investigate the role and mechanism of Htr2b on neuroinflammation of SCI. The BV2 and HMC3 microglia were treated with lipopolysaccharide (LPS) or interferon (IFN)-γ to simulate in vitro models of SCI. Sprague-Dawley rats were subjected to the T10 laminectomy to induce animal model of SCI. Htr2b mRNA expression was measured by qRT-PCR. The expression of Htr2b and Iba-1 was detected by western blot and immunofluorescence. The expression of inflammatory cytokines in vitro and in vivo was also measured. Kyoto Encyclopedia of Genes and Genomes (KEGG) was employed to analyze Htr2b-regulated signaling pathways. Rat behavior was analyzed by the Basso, Beattie, and Bresnahan (BBB) and inclined plane test. Rat dorsal horn tissues were stained by hematoxylin-eosin (H&E) and Nissl to measure neuron loss. Htr2b was highly expressed in LPS- and IFN-γ-treated microglia and SCI rats. SCI modeling promoted M1 microglia polarization and increased levels of inflammatory cytokines. Inhibition of Htr2b by Htr2b shRNA or RS-127445 reduced the expression of Htr2b, Iba-1, and iNOS and suppressed cytokine levels. KEGG showed that Htr2b inhibited ErbB signaling pathway. Inhibition of Htr2b increased protein expression of neuregulin-1 (Nrg-1) and p-ErbB4. Inhibition of the ErbB signaling pathway markedly reversed the effect of Htr2b shRNA on M1 microglia polarization and inflammatory cytokines. Htr2b promotes M1 microglia polarization and neuroinflammation after SCI by inhibiting Nrg-1/ErbB signaling pathway.
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Affiliation(s)
- Wenhao Chen
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
- Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, People's Republic of China
| | - Xianlei Gao
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
| | - Wanliang Yang
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
- Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, People's Republic of China
| | - Xun Xiao
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
- Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, People's Republic of China
| | - Xin Pan
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
| | - Hao Li
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China.
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4
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Guntermann A, Marcus K, May C. The good or the bad: an overview of autoantibodies in traumatic spinal cord injury. Biol Chem 2024; 405:79-89. [PMID: 37786927 DOI: 10.1515/hsz-2023-0252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 09/12/2023] [Indexed: 10/04/2023]
Abstract
Infections remain the most common cause of death after traumatic spinal cord injury, likely due to a developing immune deficiency syndrome. This, together with a somewhat contradictory development of autoimmunity in many patients, are two major components of the maladaptive systemic immune response. Although the local non-resolving inflammation in the lesioned spinal cord may lead to an antibody formation against autoantigens of the injured spinal cord tissue, there are also natural (pre-existing) autoantibodies independent of the injury. The way in which these autoantibodies with different origins affect the neuronal and functional outcome of spinal cord-injured patients is still controversial.
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Affiliation(s)
- Annika Guntermann
- Medical Proteome Analysis, Center for Protein Diagnostics (ProDi), Ruhr University Bochum, D-44801 Bochum, Germany
- Medizinisches Proteom-Center, Medical Faculty, ProDi E2.233, Ruhr University Bochum, Gesundheitscampus 4, D-44801 Bochum, Germany
| | - Katrin Marcus
- Medical Proteome Analysis, Center for Protein Diagnostics (ProDi), Ruhr University Bochum, D-44801 Bochum, Germany
- Medizinisches Proteom-Center, Medical Faculty, ProDi E2.233, Ruhr University Bochum, Gesundheitscampus 4, D-44801 Bochum, Germany
| | - Caroline May
- Medical Proteome Analysis, Center for Protein Diagnostics (ProDi), Ruhr University Bochum, D-44801 Bochum, Germany
- Medizinisches Proteom-Center, Medical Faculty, ProDi E2.233, Ruhr University Bochum, Gesundheitscampus 4, D-44801 Bochum, Germany
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Bourguignon L, Lukas LP, Guest JD, Geisler FH, Noonan V, Curt A, Brüningk SC, Jutzeler CR. Studying missingness in spinal cord injury data: challenges and impact of data imputation. BMC Med Res Methodol 2024; 24:5. [PMID: 38184529 PMCID: PMC10770973 DOI: 10.1186/s12874-023-02125-x] [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: 07/04/2023] [Accepted: 12/08/2023] [Indexed: 01/08/2024] Open
Abstract
BACKGROUND In the last decades, medical research fields studying rare conditions such as spinal cord injury (SCI) have made extensive efforts to collect large-scale data. However, most analysis methods rely on complete data. This is particularly troublesome when studying clinical data as they are prone to missingness. Often, researchers mitigate this problem by removing patients with missing data from the analyses. Less commonly, imputation methods to infer likely values are applied. OBJECTIVE Our objective was to study how handling missing data influences the results reported, taking the example of SCI registries. We aimed to raise awareness on the effects of missing data and provide guidelines to be applied for future research projects, in SCI research and beyond. METHODS Using the Sygen clinical trial data (n = 797), we analyzed the impact of the type of variable in which data is missing, the pattern according to which data is missing, and the imputation strategy (e.g. mean imputation, last observation carried forward, multiple imputation). RESULTS Our simulations show that mean imputation may lead to results strongly deviating from the underlying expected results. For repeated measures missing at late stages (> = 6 months after injury in this simulation study), carrying the last observation forward seems the preferable option for the imputation. This simulation study could show that a one-size-fit-all imputation strategy falls short in SCI data sets. CONCLUSIONS Data-tailored imputation strategies are required (e.g., characterisation of the missingness pattern, last observation carried forward for repeated measures evolving to a plateau over time). Therefore, systematically reporting the extent, kind and decisions made regarding missing data will be essential to improve the interpretation, transparency, and reproducibility of the research presented.
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Affiliation(s)
- Lucie Bourguignon
- Department of Health Sciences and Technology (D-HEST), ETH Zurich, Universitätstrasse 2, 8092, Zürich, Switzerland.
- Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland.
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland.
| | - Louis P Lukas
- Department of Health Sciences and Technology (D-HEST), ETH Zurich, Universitätstrasse 2, 8092, Zürich, Switzerland
- Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - James D Guest
- Neurological Surgery and the Miami Project to Cure Paralysis, U Miami, Miami, FL, 33136, USA
| | - Fred H Geisler
- Department of Medical Imaging, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Vanessa Noonan
- Praxis Spinal Cord Institute, Vancouver, British Columbia, Canada
| | - Armin Curt
- Spinal Cord Injury Center, University Hospital Balgrist, University of Zurich, Lengghalde 2, 8006, Zürich, Switzerland
| | - Sarah C Brüningk
- Department of Health Sciences and Technology (D-HEST), ETH Zurich, Universitätstrasse 2, 8092, Zürich, Switzerland
- Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Catherine R Jutzeler
- Department of Health Sciences and Technology (D-HEST), ETH Zurich, Universitätstrasse 2, 8092, Zürich, Switzerland
- Schulthess Klinik, Lengghalde 2, 8008, Zürich, Switzerland
- SIB Swiss Institute of Bioinformatics, Lausanne, Switzerland
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Moritz W, Westman AM, Politi MC, DOD Working Group, Fox IK. Assessing an Online Patient Decision Aid about Upper Extremity Reconstructive Surgery for Cervical Spinal Cord Injury: Pilot Testing Knowledge, Decisional Conflict, and Acceptability. MDM Policy Pract 2023; 8:23814683231199721. [PMID: 37860721 PMCID: PMC10583528 DOI: 10.1177/23814683231199721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 07/30/2023] [Indexed: 10/21/2023] Open
Abstract
Background. While nerve and tendon transfer surgery can restore upper extremity function and independence after midcervical spinal cord injury, few individuals (∼14%) undergo surgery. There is limited information regarding these complex and time-sensitive treatment options. Patient decision aids (PtDAs) convey complex health information and help individuals make informed, preference-consistent choices. The purpose of this study is to evaluate a newly created PtDA for people with spinal cord injury who are considering options to optimize upper extremity function. Methods. The PtDA was developed by our multidisciplinary group based on clinical evidence and the Ottawa Decision Support Framework. A prospective pilot study enrolled adults with midcervical spinal cord injury to evaluate the PtDA. Participants completed surveys about knowledge and decisional conflict before and after viewing the PtDA. Acceptability measures and suggestions for further improvement were also solicited. Results. Forty-two individuals were enrolled and completed study procedures. Participants had a 20% increase in knowledge after using the PtDA (P < 0.001). The number of participants experiencing decisional conflict decreased after viewing the PtDA (33 v. 18, P = 0.001). Acceptability was high. To improve the PtDA, participants suggested adding details about specific surgeries and outcomes. Limitations. Due to the COVID-19 pandemic, we used an entirely virtual study methodology and recruited participants from national networks and organizations. Most participants were older than the general population with a new spinal cord injury and may have different injury causes than typical surgical candidates. Conclusions. A de novo PtDA improved knowledge of treatment options and reduced decisional conflict about reconstructive surgery among people with cervical spinal cord injury. Future work should explore PtDA use for improving knowledge and decisional conflict in the nonresearch, clinical setting. Highlights People with cervical spinal cord injury prioritize gaining upper extremity function after injury, but few individuals receive information about treatment options.A newly created patient decision aid (PtDA) provides information about recovery after spinal cord injury and the role of traditional tendon and newer nerve transfer surgery to improve upper extremity upper extremity function.The PtDA improved knowledge and decreased decisional conflict in this pilot study.Future work should focus on studying dissemination and implementation of the ptDA into clinical practice.
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Affiliation(s)
- William Moritz
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Amanda M. Westman
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Mary C. Politi
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Ida K. Fox
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
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7
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Craven BC, Cirnigliaro CM, Carbone LD, Tsang P, Morse LR. The Pathophysiology, Identification and Management of Fracture Risk, Sublesional Osteoporosis and Fracture among Adults with Spinal Cord Injury. J Pers Med 2023; 13:966. [PMID: 37373955 DOI: 10.3390/jpm13060966] [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: 04/25/2023] [Revised: 05/26/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND The prevention of lower extremity fractures and fracture-related morbidity and mortality is a critical component of health services for adults living with chronic spinal cord injury (SCI). METHODS Established best practices and guideline recommendations are articulated in recent international consensus documents from the International Society of Clinical Densitometry, the Paralyzed Veterans of America Consortium for Spinal Cord Medicine and the Orthopedic Trauma Association. RESULTS This review is a synthesis of the aforementioned consensus documents, which highlight the pathophysiology of lower extremity bone mineral density (BMD) decline after acute SCI. The role and actions treating clinicians should take to screen, diagnose and initiate the appropriate treatment of established low bone mass/osteoporosis of the hip, distal femur or proximal tibia regions associated with moderate or high fracture risk or diagnose and manage a lower extremity fracture among adults with chronic SCI are articulated. Guidance regarding the prescription of dietary calcium, vitamin D supplements, rehabilitation interventions (passive standing, functional electrical stimulation (FES) or neuromuscular electrical stimulation (NMES)) to modify bone mass and/or anti-resorptive drug therapy (Alendronate, Denosumab, or Zoledronic Acid) is provided. In the event of lower extremity fracture, the need for timely orthopedic consultation for fracture diagnosis and interprofessional care following definitive fracture management to prevent health complications (venous thromboembolism, pressure injury, and autonomic dysreflexia) and rehabilitation interventions to return the individual to his/her pre-fracture functional abilities is emphasized. CONCLUSIONS Interprofessional care teams should use recent consensus publications to drive sustained practice change to mitigate fracture incidence and fracture-related morbidity and mortality among adults with chronic SCI.
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Affiliation(s)
- Beverley Catharine Craven
- KITE Research Institute, 520 Sutherland Dr, Toronto, ON M4G 3V9, Canada
- Faculty of Medicine, University of Toronto, Medical Sciences Building, 1 King's College Cir, Toronto, ON M5S 1A8, Canada
| | - Christopher M Cirnigliaro
- Department of Veterans Affairs Rehabilitation, Research, and Development Service, Spinal Cord Damage Research Center, Bronx, NY 10468, USA
| | - Laura D Carbone
- Department of Medicine: Rheumatology, Medical College of Georgia, Augusta University, 1120 15th St, Augusta, GA 30912, USA
| | - Philemon Tsang
- KITE Research Institute, 520 Sutherland Dr, Toronto, ON M4G 3V9, Canada
| | - Leslie R Morse
- Department of Rehabilitation Medicine, University of Minnesota, 500 Harvard St SE, Minneapolis, MN 55455, USA
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8
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Pavese C, Kessler TM. Prediction of Lower Urinary Tract, Sexual, and Bowel Function, and Autonomic Dysreflexia after Spinal Cord Injury. Biomedicines 2023; 11:1644. [PMID: 37371739 DOI: 10.3390/biomedicines11061644] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/02/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Spinal cord injury (SCI) produces damage to the somatic and autonomic pathways that regulate lower urinary tract, sexual, and bowel function, and increases the risk of autonomic dysreflexia. The recovery of these functions has a high impact on health, functioning, and quality of life and is set as the utmost priority by patients. The application of reliable models to predict lower urinary tract, sexual, and bowel function, and autonomic dysreflexia is important for guiding counseling, rehabilitation, and social reintegration. Moreover, a reliable prediction is essential for designing future clinical trials to optimize patients' allocation to different treatment groups. To date, reliable and simple algorithms are available to predict lower urinary tract and bowel outcomes after traumatic and ischemic SCI. Previous studies identified a few risk factors to develop autonomic dysreflexia, albeit a model for prediction still lacks. On the other hand, there is an urgent need for a model to predict the evolution of sexual function. The aim of this review is to examine the available knowledge and models for the prediction of lower urinary tract, sexual, and bowel function, and autonomic dysreflexia after SCI, and critically discuss the research priorities in these fields.
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Affiliation(s)
- Chiara Pavese
- Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy
- Istituti Clinici Scientifici Maugeri IRCCS, Neurorehabilitation and Spinal Unit of Pavia Institute, 27100 Pavia, Italy
| | - Thomas M Kessler
- Department of Neuro-Urology, Balgrist University Hospital, University of Zürich, 8008 Zürich, Switzerland
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9
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Zhang H, Wu C, Yu DD, Su H, Chen Y, Ni W. Piperine attenuates the inflammation, oxidative stress, and pyroptosis to facilitate recovery from spinal cord injury via autophagy enhancement. Phytother Res 2023; 37:438-451. [PMID: 36114802 DOI: 10.1002/ptr.7625] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 08/26/2022] [Accepted: 09/02/2022] [Indexed: 11/08/2022]
Abstract
Spinal cord injury (SCI) is a serious injury that can lead to irreversible motor dysfunction. Due to its complicated pathogenic mechanism, there are no effective drug treatments. Piperine, a natural active alkaloid extracted from black pepper, has been reported to influence neurogenesis and exert a neuroprotective effect in traumatic brain injury. The aim of this study was to investigate the therapeutic effect of piperine in an SCI model. SCI was induced in mice by clamping the spinal cord with a vascular clip for 1 min. Before SCI and every 2 days post-SCI, evaluations using the Basso mouse scale and inclined plane tests were performed. On day 28 after SCI, footprint analyses, and HE/Masson staining of tissues were performed. On a postoperative Day 3, the spinal cord was harvested to assess the levels of pyroptosis, reactive oxygen species (ROS), inflammation, and autophagy. Piperine enhanced functional recovery after SCI. Additionally, piperine reduced inflammation, oxidative stress, pyroptosis, and activated autophagy. However, the effects of piperine on functional recovery after SCI were reversed by autophagy inhibition. The study demonstrated that piperine facilitated functional recovery after SCI by inhibiting inflammatory, oxidative stress, and pyroptosis, mediated by the activation of autophagy.
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Affiliation(s)
- Haojie Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, People's Republic of China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Chenyu Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, People's Republic of China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Dong-Dong Yu
- Department of Urology, Huzhou Central Hospital, Huzhou, People's Republic of China
| | - Haohan Su
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, People's Republic of China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou Medical University, Wenzhou, People's Republic of China
| | - Yanlin Chen
- Spinal Surgery Department, The Central Hospital of Lishui City, Lishui, People's Republic of China
| | - Wenfei Ni
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, People's Republic of China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, People's Republic of China.,Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou Medical University, Wenzhou, People's Republic of China
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