1
|
Liu X, Xu Y, Wang Y, Peng X, Jian J, Wang X, Wang T. Administration of methylprednisolone do not affect the spinal scar component of spinal cord injury. J Spinal Cord Med 2024:1-10. [PMID: 39167368 DOI: 10.1080/10790268.2024.2352929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/23/2024] Open
Abstract
OBJECTIVE The aim of this study is to evaluate the impact of methylprednisolone (MP) on scar composition following spinal cord injury (SCI). DESIGN A total of 40 adult Sprague Dawley rats underwent right hemisection injuries to the spinal cord. INTERVENTIONS The rats were randomly divided into two groups: the vehicle group and the MP group. In the MP group, rats received intraperitoneal injections of MP at a dose of 30 mg/kg for 7 consecutive days, while the vehicle group received intraperitoneal injections of saline as a control. Weekly assessments of hindlimb performance in the rat models were conducted using the Basso-Beattie-Bresnahan test (BBB) score and the horizontal ladder-walking test. Changes in scar components were identified through immunofluorescence staining, and an axonal regeneration assay was employed to evaluate regrowth under inhibitory conditions. RESULTS The administration of MP led to a significant improvement in BBB scores compared to the control group at 7 days post-injury, although this improvement was not consistent. Furthermore, rats in the MP group did not demonstrate progressive improvement in horizontal ladder walking. Notably, there were no significant changes in the content of scar components in the injured area following MP treatment, and the axon length of neurons treated with MP did not exhibit significant extension compared to the vehicle group. CONCLUSIONS Our findings indicate that the administration of MP does not effectively enhance hindlimb motor function or promote neuronal axon growth within a scarred environment after SCI.
Collapse
Affiliation(s)
- Xin Liu
- Institute of Base Medicine, Jinzhou Medical University, Jinzhou, People's Republic of China
| | - Yang Xu
- Institute of Neurological Disease, West China Hospital, Sichuan University & The Research Units of West China, Chinese Academy of Medical Sciences, Chengdu, People's Republic of China
| | - Yangyang Wang
- Institute of Neurological Disease, West China Hospital, Sichuan University & The Research Units of West China, Chinese Academy of Medical Sciences, Chengdu, People's Republic of China
| | - Xia Peng
- Institute of Neuroscience, Laboratory Zoology Department, Kunming Medical University, Kunming, People's Republic of China
| | - Jiao Jian
- Institute of Neuroscience, Laboratory Zoology Department, Kunming Medical University, Kunming, People's Republic of China
| | - Xuefang Wang
- Institute of Neurological Disease, West China Hospital, Sichuan University & The Research Units of West China, Chinese Academy of Medical Sciences, Chengdu, People's Republic of China
| | - Tinghua Wang
- Institute of Base Medicine, Jinzhou Medical University, Jinzhou, People's Republic of China
- Institute of Neurological Disease, West China Hospital, Sichuan University & The Research Units of West China, Chinese Academy of Medical Sciences, Chengdu, People's Republic of China
- Institute of Neuroscience, Laboratory Zoology Department, Kunming Medical University, Kunming, People's Republic of China
| |
Collapse
|
2
|
Xie Y, Han L, Zhao Y, Zhao L, Yang F, Cao J, Tang Q. Effect of ultrasound-guided stellate ganglion block on lung protection for patients undergoing one-lung ventilation. Am J Transl Res 2024; 16:794-808. [PMID: 38586109 PMCID: PMC10994812 DOI: 10.62347/ufzf5671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/11/2022] [Indexed: 04/09/2024]
Abstract
OBJECTIVE To explore the potential effect of ultrasound-guided stellate ganglion block (SGB) on lung protection for patients undergoing one-lung ventilation (OLV). METHODS A total of 123 patients undergoing elective one-lung ventilation surgery were selected as research subjects in this prospective study. These patients were randomly divided into the SGB group, control group and blank group on average. Stellate ganglion block was carried out in the SGB and control groups. Patients in the SGB group were injected with 6 ml mixture of 0.25% ropivacaine hydrochloride and 1% lidocaine hydrochloride, while those in the control group were injected with 6 mL of 0.9% saline. Punctures weren't performed for patients in the blank group. The same induction and maintenance of general anesthesia was adopted for all three groups. Hemodynamics, respiratory parameters and arterial blood gas analysis were recorded after entering the operation room (T0), pre-OLV (T1), 30 min after OLV (T2), 60 min after OLV (T3), at the end of surgery (T4), and 30 min after extubation (T5). Oxygenation index (OI), pulmonary shunt fraction (Qs/Qt) and pH value were compared at different time points. Intravenous serum was collected at T0, T3 and T5 for the detection of surfactant proteins A (SP-A), superoxide dismutase (SOD), malondialdehyde (MDA), interleukin-6 (IL-6) and interleukin-10 (IL-10) levels, respectively. The complications related to SGB after surgery and the postoperative pulmonary complications within 72 h were recorded. RESULTS At T1, T2, and T3, MAP level in SGB group was lower than that in blank and control groups (P<0.05). At T2, and T3, SGB group had lower hear rate (HR), peak airway pressure (Ppeak) and tidal volume (TV) than blank and control groups (all P<0.05). From T2 to T5, SGB group had higher OI but lower Qs/Qt than blank and control groups (both P<0.05). At T3 and T5, SGB group had lower SP-A, IL-6, and MDA levels but higher IL-10 and SOD levels than blank and control groups (all P<0.05). There was one case of hypoxemia in the blank group within 72 h after surgery. CONCLUSION Ultrasound-guided SGB has lung-protective effects on patients undergoing OLV, which significantly improves patients' OI, reduces intrapulmonary shunts, declines ventilator-induced lung damage, and inhibits inflammatory response as well as oxidative stress (China Clinical Trial Registry, registration number ChiCTR2000033385, https://www.chictr.org.cn).
Collapse
Affiliation(s)
- Yang Xie
- Department of Anesthesiology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School of Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Li Han
- Department of Anesthesiology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School of Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Yue Zhao
- Department of Anesthesiology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School of Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Lihong Zhao
- Department of Anesthesiology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School of Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Fen Yang
- Department of Anesthesiology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School of Nanjing Medical UniversitySuzhou 215002, Jiangsu, China
| | - Jianfang Cao
- Department of Anesthesiology and Critical Care, The Second Affiliated Hospital of Soochow UniversitySuzhou 215002, Jiangsu, China
| | - Qifeng Tang
- Department of Anesthesiology, Shanghai Hechuan-Rhine TCM HospitalShanghai 201103, China
| |
Collapse
|
3
|
Tang H, Gu Y, Jiang L, Zheng G, Pan Z, Jiang X. The role of immune cells and associated immunological factors in the immune response to spinal cord injury. Front Immunol 2023; 13:1070540. [PMID: 36685599 PMCID: PMC9849245 DOI: 10.3389/fimmu.2022.1070540] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 12/05/2022] [Indexed: 01/06/2023] Open
Abstract
Spinal cord injury (SCI) is a devastating neurological condition prevalent worldwide. Where the pathological mechanisms underlying SCI are concerned, we can distinguish between primary injury caused by initial mechanical damage and secondary injury characterized by a series of biological responses, such as vascular dysfunction, oxidative stress, neurotransmitter toxicity, lipid peroxidation, and immune-inflammatory response. Secondary injury causes further tissue loss and dysfunction, and the immune response appears to be the key molecular mechanism affecting injured tissue regeneration and functional recovery from SCI. Immune response after SCI involves the activation of different immune cells and the production of immunity-associated chemicals. With the development of new biological technologies, such as transcriptomics, the heterogeneity of immune cells and chemicals can be classified with greater precision. In this review, we focus on the current understanding of the heterogeneity of these immune components and the roles they play in SCI, including reactive astrogliosis and glial scar formation, neutrophil migration, macrophage transformation, resident microglia activation and proliferation, and the humoral immunity mediated by T and B cells. We also summarize findings from clinical trials of immunomodulatory therapies for SCI and briefly review promising therapeutic drugs currently being researched.
Collapse
Affiliation(s)
- Huaguo Tang
- Department of Hand and Foot Surgery, Zhejiang Rongjun Hospital, Jiaxing, China
| | - Yuanjie Gu
- Department of Hand and Foot Surgery, Zhejiang Rongjun Hospital, Jiaxing, China
| | - Lei Jiang
- Department of Hand and Foot Surgery, Zhejiang Rongjun Hospital, Jiaxing, China
| | - Gang Zheng
- Department of Neurosurgery, The Central Hospital Affiliated to Shaoxing University, Jiaxing, China
| | - Zhuoer Pan
- Department of Orthopedics, Zhejiang Rongjun Hospital, Jiaxing, China
| | - Xiugui Jiang
- Department of Hand and Foot Surgery, Zhejiang Rongjun Hospital, Jiaxing, China,*Correspondence: Xiugui Jiang,
| |
Collapse
|
4
|
Zirak A, Soleimani M, Jameie SB, Abdollahifar MA, Fadaei Fathabadi F, Hassanzadeh S, Esmaeilzadeh E, Farjoo MH, Norouzian M. Related Fluoxetine and Methylprednisolone Changes of TNF-α and IL-6 Expression in The Hypothyroidism Rat Model of Spinal Cord Injury. CELL JOURNAL 2021; 23:763-771. [PMID: 34979066 PMCID: PMC8753107 DOI: 10.22074/cellj.2021.7459] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 07/25/2020] [Indexed: 12/03/2022]
Abstract
Objective Spinal cord injury (SCI) is a serious clinical condition that leads to disability. Following primary injury, pro-
inflammatory cytokines play an important role in the subsequent secondary events. The thyroid hormone (TH) is known
as the modulator of inflammatory cytokines and acts as a neuroprotective agent. Methylprednisolone (MP) is used
for the early treatment of SCI. Fluoxetine (FLX), also is known as a selective serotonin reuptake inhibitor (SSRI), has
therapeutic potential in neurological disorders. The aim of the present study was to investigate the combined effects of
MP and FLX on SCI in the rat hypothyroidism (hypo) model. Materials and Methods In this experimental study, 48 male Wistar rats with hypothyroidism were randomly divided
into 6 groups (n=8/group): control (Hypo), Hypo+Surgical sham, Hypo+SCI, Hypo+SCI+MP, Hypo+SCI+FLX, and
Hypo+SCI+MP+FLX. SCI was created using an aneurysm clip and Hypothyroidism was induced by 6-Propyl-2-thiouracil
(PTU) at a dose of 10 mg/kg/day administered intraperitoneally. Following SCI induction, rats received MP and FLX
treatments via separate intraperitoneal injections at a dose of 30 and 10 mg/kg/day respectively on the surgery day
and FLX continued daily for 3 weeks. The expression levels of tumor necrosis factor-alpha (TNF-α) and interleukin-6
(IL-6) were quantified by Real-time polymerase chain reaction (PCR) and Western blotting. Myelination and glutathione
(GSH) levels were analyzed by Luxol Fast Blue (LFB) staining and ELISA respectively.
Results Following combined MP and FLX treatments, the expression levels of TNF-α and IL-6 significantly decreased
and GSH level considerably increased in the trial animals.
Conclusion Our results show the neuroprotective effects of MP and FLX with better results in Hypo+SCI+MP+FLX
group. Further study is required to identify the mechanisms involved.
Collapse
Affiliation(s)
- Atousa Zirak
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Soleimani
- Department of Medical Basic Sciences, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.,Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Seyed Behnamedin Jameie
- Neuroscience Research Center (NRC), Iran University of Medical Sciences, Tehran, Iran. .,Department of Anatomy, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Fadaei Fathabadi
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sajad Hassanzadeh
- Neuroscience Research Center (NRC), Iran University of Medical Sciences, Tehran, Iran.,Skull Base Research Center, Five Senses Institute, Iran University of Medical Sciences, Tehran, Iran
| | | | - Mohammad Hadi Farjoo
- Department of Pharmacology, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohsen Norouzian
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| |
Collapse
|
5
|
孙 瑞, 于 德. [Inhibitory effect of miR-429 on expressions of ZO-1, Occludin, and Claudin-5 proteins to improve the permeability of blood spinal cord barrier in vitro]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:1163-1169. [PMID: 32929911 PMCID: PMC8171720 DOI: 10.7507/1002-1892.202001097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 05/18/2020] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To explore the feasibility and mechanism of inhibiting miR-429 to improve the permeability of the blood spinal cord barrier (BSCB) in vitro, and provide a new gene therapy target for enhancing the spinal cord microenvironment. METHODS First, the immortalized human brain microvascular endothelial cell line (hCMEC/D3) was transfected with the anti-miR-429 antagonist (antagomiR-429) and its negative control (antagomiR-429-NC), respectively. The miR-429 expression of hCMEC/D3 cells was observed by fluorescence microscopy and real-time fluorescence quantitative PCR to verify the transfection efficiency of antagomiR-429. Then the effect of miR-429 on BSCB permeability was observed in vitro. The experiment was divided into 4 groups. The blank control group (group A) was constructed of normal hCMEC/D3 cells and Ha-sc cells to prepare the BSCB model, the hypoxia-induced group (group B), the hypoxia-induced+antagomiR-429-NC group (group C), and the hypoxia-induced+antagomiR-429 group (group D) were constructed of normal, antagomiR-429-NC transfected, and antagomiR-429 transfected hCMEC/D3 cells and Ha-sc cells to prepare the BSCB models and hypoxia treatment for 12 hours. The permeability of BSCB in vitro was measured by horseradish peroxidase (HRP) permeability. Real-time fluorescence quantitative PCR, Western blot, and immunofluorescence staining were used to observe the expressions of ZO-1, Occludin, and Claudin-5. RESULTS The antagomiR-429 and antagomiR-429-NC were successfully transfected into hCMEC/D3 cells under a fluorescence microscope, and the transfection efficiency was about 90%. Real-time fluorescence quantitative PCR results showed that the relative expression of miR-429 in antagomiR-429 group was 0.109±0.013, which was significantly lower than that of antagomiR-429-NC group (0.956±0.004, P<0.05). HRP permeability measurement, real-time fluorescence quantitative PCR, and Western blot results showed that the HRP permeability of groups B and C were significantly higher than those of groups A and D ( P<0.05), and the relative expressions of ZO-1, Occludin, and Claudin-5 proteins and mRNAs were significantly lower in groups B and C than in groups A and D ( P<0.05) and in group D than in group A ( P<0.05); there was no significant difference between groups B and C ( P>0.05). Immunofluorescence staining showed that the immunofluorescence of ZO-1, Occudin, and Claudin-5 at the cell membrane boundary in group D were stronger than those in groups B and C, but not as strong as that in group A. CONCLUSION Inhibition of miR-429 expression can promote the expressions of ZO-1, Occludin, and Claudin-5 proteins in microvascular endothelial cells, thereby improving the increased permeability of BSCB due to hypoxia.
Collapse
Affiliation(s)
- 瑞 孙
- 锦州医科大学附属第一医院骨创伤科(辽宁锦州 121000)Department of Orthopedics, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou Liaoning, 121000, P.R.China
- 辽宁省健康产业集团阜新矿业集团总医院骨科(辽宁阜新 123000)Department of Orthopedics, General Hospital of Fuxin Mining Group, Liaoning Health Industry Group, Fuxin Liaoning, 123000, P.R.China
| | - 德水 于
- 锦州医科大学附属第一医院骨创伤科(辽宁锦州 121000)Department of Orthopedics, the First Affiliated Hospital of Jinzhou Medical University, Jinzhou Liaoning, 121000, P.R.China
| |
Collapse
|
6
|
Kumar S, Fritz Z, Sulakhiya K, Theis T, Berthiaume F. Transcriptional Factors and Protein Biomarkers as Target Therapeutics in Traumatic Spinal Cord and Brain Injury. Curr Neuropharmacol 2020; 18:1092-1105. [PMID: 32442086 PMCID: PMC7709155 DOI: 10.2174/1570159x18666200522203542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/19/2020] [Accepted: 05/07/2020] [Indexed: 12/04/2022] Open
Abstract
Traumatic injury to the spinal cord (SCI) and brain (TBI) are serious health problems and affect many people every year throughout the world. These devastating injuries are affecting not only patients but also their families socially as well as financially. SCI and TBI lead to neurological dysfunction besides continuous inflammation, ischemia, and necrosis followed by progressive neurodegeneration. There are well-established changes in several other processes such as gene expression as well as protein levels that are the important key factors to control the progression of these diseases. We are not yet able to collect enough knowledge on the underlying mechanisms leading to the altered gene expression profiles and protein levels in SCI and TBI. Cell loss is hastened by the induction or imbalance of pro- or anti-inflammatory expression profiles and transcription factors for cell survival after or during trauma. There is a sequence of events of dysregulation of these factors from early to late stages of trauma that opens a therapeutic window for new interventions to prevent/restrict the progression of these diseases. There has been increasing interest in the modulation of these factors for improving the patient’s quality of life by targeting both SCI and TBI. Here, we review some of the recent transcriptional factors and protein biomarkers that have been developed and discovered in the last decade in the context of targeted therapeutics for SCI and TBI patients.
Collapse
Affiliation(s)
- Suneel Kumar
- Department of Biomedical Engineering, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Zachary Fritz
- Department of Biomedical Engineering, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Kunjbihari Sulakhiya
- Department of Pharmacy, Indira Gandhi National Tribal University (IGNTU), Amarkantak, India
| | - Thomas Theis
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers, The
State University of New Jersey, Piscataway, New Jersey, USA
| | - Francois Berthiaume
- Department of Biomedical Engineering, The State University of New Jersey, Piscataway, New Jersey, USA
| |
Collapse
|