1
|
Chen H, Xing R, Yin X, Huang H. Activation of SIRT1 by hyperbaric oxygenation promotes recovery of motor dysfunction in spinal cord injury rats. Int J Neurosci 2023:1-11. [PMID: 37982284 DOI: 10.1080/00207454.2023.2285707] [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: 10/03/2023] [Revised: 11/08/2023] [Accepted: 11/15/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Hyperbaric oxygenation (HBO) therapy can improve locomotor dysfunction following spinal cord injury (SCI). Emerging evidence has demonstrated that sirtuin1 (SIRT1) exerts protective effects on neurons. However, whether HBO alleviates locomotor dysfunction by regulating SIRT1 is unclear. METHODS The traumatic SCI animal model was performed on the adult Sprague-Dawley rats. The Basso, Beattie Bresnahan (BBB) locomotor rating scale was used to evaluate the open-field locomotor function. Western blot, real-time quantitative reverse transcription polymerase chain reaction, SIRT1 activity assay, and enzyme-linked immunosorbent assays were performed to explore the molecular mechanisms. RESULTS We found that series HBO therapy significantly improved locomotor dysfunction and ameliorated the decreased mRNA, protein, and activity of spinal cord SIRT1 induced by traumatic SCI injury in rats. In addition, intraperitoneal injection of SIRT1 inhibitor EX-527 abolished the beneficial effects of series HBO treatment on locomotor deficits. Importantly, series HBO treatment following the traumatic SCI injury inhibited the inflammatory cascade and apoptosis-related protein, which was retained by EX-527 and enhanced by SRT1720. Furthermore, EX-527 blocked the enhanced induction of autophagy series with the HBO application. CONCLUSION These findings demonstrated a new mechanism for series HBO therapy involving activation of SIRT1 and subsequent modulation of the inflammatory cascade, apoptosis, and autophagy, which contributed to the recovery of motor dysfunction.
Collapse
Affiliation(s)
- Huiqiang Chen
- Department of Orthopedics, General Hospital of Southern Theater Command, Guangzhou, China
| | - Ranran Xing
- Department of Neurological Rehabilitation, Division II, Neurology Specialty Hospital, General Hospital of Southern Theater Command, Guangzhou, China
| | - Xinwei Yin
- Department of Neurological Rehabilitation, Division II, Neurology Specialty Hospital, General Hospital of Southern Theater Command, Guangzhou, China
| | - Huai Huang
- Department of Neurological Rehabilitation, Division II, Neurology Specialty Hospital, General Hospital of Southern Theater Command, Guangzhou, China
| |
Collapse
|
2
|
Turner S, Sunshine MD, Chandran V, Smuder AJ, Fuller DD. Hyperbaric oxygen therapy after mid-cervical spinal contusion injury. J Neurotrauma 2022; 39:715-723. [PMID: 35152735 PMCID: PMC9081027 DOI: 10.1089/neu.2021.0412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hyperbaric oxygen (HBO) therapy is frequently used to treat peripheral wounds or decompression sickness. Evidence suggests that HBO therapy can provide neuroprotection and has an anti-inflammatory impact after neurological injury, including spinal cord injury (SCI). Our primary purpose was to conduct a genome-wide screening of mRNA expression changes in the injured spinal cord after HBO therapy. An mRNA gene array was used to evaluate samples taken from the contused region of the spinal cord following a lateralized mid-cervical contusion injury in adult female rats. HBO therapy consisted of daily, 1-h sessions (3.0 ATA, 100% O2) initiated on the day of SCI and continued for 10 days. Gene set enrichment analyses indicated that HBO upregulated genes in pathways associated with electron transport, mitochondrial function, and oxidative phosphorylation, and downregulated genes in pathways associated with inflammation (including cytokines and nuclear factor kappa B [NF-κB]) and apoptotic signaling. In a separate cohort, spinal cord histology was performed to verify whether the HBO treatment impacted neuronal cell counts or inflammatory markers. Compared with untreated rats, there were increased NeuN positive cells in the spinal cord of HBO-treated rats (p = 0.004). We conclude that HBO therapy, initiated shortly after SCI and continued for 10 days, can alter the molecular signature of the lesioned spinal cord in a manner consistent with a neuroprotective impact.
Collapse
Affiliation(s)
- Sara Turner
- University of Florida, Physical Therapy, Gainesville, Florida, United States
| | - Michael D. Sunshine
- University of Florida, 3463, Physical Therapy, 1149 South Newell Drive, L1-168, Gainesville, Florida, United States, 32601
- University of Florida
| | | | - Ashley J Smuder
- University of Florida, Applied Physiology and Kinesiology, Gainesville, Florida, United States
| | - David D Fuller
- University of Florida, Physical Therapy, 100 S. Newell Dr., PO Box 100154, Gainesville, Florida, United States, 32610
| |
Collapse
|
3
|
Chen H, Xu G, Wu Y, Wang X, Wang F, Zhang Y. HBO-PC Promotes Locomotor Recovery by Reducing Apoptosis and Inflammation in SCI Rats: The Role of the mTOR Signaling Pathway. Cell Mol Neurobiol 2021; 41:1537-1547. [PMID: 32715402 DOI: 10.1007/s10571-020-00921-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 07/10/2020] [Indexed: 11/25/2022]
Abstract
Hyperbaric oxygen preconditioning (HBO-PC) has beneficial effects on the promotion of locomotor recovery by reducing apoptosis and inflammation after traumatic spinal cord injury (SCI). The mammalian target of rapamycin (mTOR) signaling pathway has been implicated in apoptosis and inflammation in many pathophysiological conditions. However, whether HBO-PC improves traumatic SCI-induced locomotor dysfunction by regulating the mTOR signaling pathway and its downstream molecules remains unknown. In the present study, we found that HBO-PC significantly promoted SCI-induced hind-limb locomotor recovery and increased the amplitude and potential of motor evoked potential. Magnetic resonance imaging showed that spinal cavitation or atrophy caused by SCI was obviously alleviated by HBO-PC therapy. Histological analysis showed that the changes in spinal cord neural structure in SCI rats were markedly restored by HBO-PC treatment. Western blot analysis showed that the SCI-induced enhanced levels of p-mTOR, inflammatory cytokines and apoptosis in the spinal cord were abrogated after administration of HBO-PC. Furthermore, intrathecal administration of an mTOR agonist reversed the effects of HBO-PC on locomotor function recovery, p-NF-κB p65 and p-p70S6K levels, inflammation and apoptosis. These findings indicated a new mechanism by which HBO-PC therapy suppressed inflammation and apoptosis through inactivation of the mTOR signaling pathway, which contributed to motor disability in SCI rats.
Collapse
Affiliation(s)
- Huiqiang Chen
- Department of Orthopedics, General Hospital of Southern Theater Command, Gusangzhou, 510010, Guangdong Province, China
| | - Guoshen Xu
- Department of Orthopedics, Guangdong Tongjiang Hospital, Foshan, 528300, Guangdong Province, China
| | - You Wu
- Department of Orthopedics, General Hospital of Southern Theater Command, Gusangzhou, 510010, Guangdong Province, China
| | - Xinyu Wang
- Department of Orthopedics, General Hospital of Southern Theater Command, Gusangzhou, 510010, Guangdong Province, China
| | - Fei Wang
- Department of Orthopedics, General Hospital of Southern Theater Command, Gusangzhou, 510010, Guangdong Province, China
| | - Ying Zhang
- Department of Orthopedics, General Hospital of Southern Theater Command, Gusangzhou, 510010, Guangdong Province, China.
| |
Collapse
|
4
|
Abstract
Hyperbaric oxygen therapy, intermittent breathing of 100% oxygen at a pressure upper than sea level, has been shown to be some of the neuroprotective effects and used therapeutically in a wide range of neurological disorders. This review summarizes current knowledge about the neuroprotective effects of hyperbaric oxygen therapy with their molecular mechanisms in different models of neurological disorders.
Collapse
Affiliation(s)
- Fahimeh Ahmadi
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ali Reza Khalatbary
- Molecular and Cell Biology Research Center, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
| |
Collapse
|
5
|
Evaluation of hyperbaric oxygen therapy for spinal cord injury in rats with different treatment course using diffusion tensor imaging. Spinal Cord 2019; 57:404-411. [PMID: 30643168 DOI: 10.1038/s41393-018-0238-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 11/26/2018] [Accepted: 12/20/2018] [Indexed: 12/20/2022]
Abstract
STUDY DESIGN Animal study. OBJECTIVES To evaluate the efficacy of hyperbaric oxygen (HBO) therapy for spinal cord injury (SCI) in rats with different treatment course using diffusion tensor imaging (DTI). SETTING Hospital in Fuzhou, China. METHODS Fifty adult Sprague-Dawley rats were grouped as: (A) sham-operated group (n = 10); (B) SCI without HBO therapy group (n = 10); (C) SCI with HBO therapy for 2 weeks (SCI+HBO2W) group (n = 10); (D) SCI with HBO therapy for 4 weeks (SCI+HBO4W) group (n = 10); (E) SCI with HBO therapy for 6 weeks (SCI+HBO6W) group (n = 10). Basso Beattie Bresnahan (BBB) scores and diffusion tensor imaging parameters including fractional anisotropy (FA), mean diffusivity (MD), radial diffusion (RD), and axial diffusion (AD) values in the injury epicenter, as well as 2 mm rostral and caudal to the injury epicenter were collected and analyzed 6 weeks post-injury. RESULTS Higher BBB score and FA values were found in the SCI+HBO4W group than in the SCI and SCI+HBO2W groups (all P < 0.05), whereas no significant differences of these metrics were observed between the SCI+HBO4W and SCI+HBO6W groups. MD and RD values of the SCI+HBO4W group were significantly lower than those of the SCI group (all P < 0.01). FA values were positively correlated with BBB scores. MD and RD values were negatively correlated with BBB scores. CONCLUSION DTI parameters, especially FA, could non-invasively and quantifiably evaluate the efficacy of HBO treatment for rats with SCI and 4 weeks may be the more appropriate treatment course.
Collapse
|
6
|
Yaman O, Yaman B, Aydın F, Var A, Temiz C. Hyperbaric oxygen treatment in the experimental spinal cord injury model. Spine J 2014; 14:2184-94. [PMID: 24530437 DOI: 10.1016/j.spinee.2014.02.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 01/03/2014] [Accepted: 02/03/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Spinal cord trauma is a major cause of mortality and morbidity. Although no known treatment for spinal cord injury exists, a limited number of effective treatment modalities and procedures are available that improve secondary injury. Hyperbaric oxygen (HBO) treatment has been used to assist in neurologic recovery after cranial injury or ischemic stroke. PURPOSE To report the findings on the effectiveness of HBO treatment on rats with experimental traumatic spinal cord injury. Improvement was evaluated through motor strength assessment and nitrite level assay testing. STUDY DESIGN We randomly distributed 40 rats among 5 groups of 8 rats each: sham incurable trauma, induced trauma, HBO treatment begun at the 1st hour, HBO treatment begun at the 6th hour, and HBO treatment begun at the 24th hour. METHOD The HBO treatment was administered to rats in three of the groups and conducted in two 90-minute sessions, under an absolute atmospheric pressure of 2.4 at 100% oxygen for 5 days. In the motor strength evaluations, all the rats were observed during the inclined plane test and clinical motor examination on the first, third, and fifth days. In addition, the nitrite levels of spinal cord tissues on the sixth day were also studied. RESULTS Results from the inclined plane levels and motor strength test from all the three groups undergoing HBO treatment were higher than those from Group 2. It was also determined that early HBO treatment resulted in higher recovery rates (groups 3 and 4). The highest levels were seen in the group in which the HBO treatments were started in the first hour (Group 3). It was noted that nitrite levels of rats in the group exposed to trauma increased, compared with the sham group, but increased levels also diminished after HBO treatments. Again, the greatest decrease in nitrite levels was evident in the group where the HBO treatment was started the earliest (Group 3). CONCLUSIONS Prompt HBO treatment after trauma significantly contributed to the clinical, histopathologic, and biochemical recovery of the rats.
Collapse
Affiliation(s)
- Onur Yaman
- Department of Neurosurgery, Tepecik Education and Training Hospital, 35110 Yenişehir, Konak, Izmir, Turkey.
| | - Banu Yaman
- Department of Pathology, Faculty of Medicine, Aegean University, 35040 Bornova, Izmir, Turkey
| | - Figen Aydın
- Hyperbaric Oxygen Treatment Center, 1587/1 Street No:1/D 35040 Bornova, Izmir, Turkey
| | - Ahmet Var
- Department of Biochemistry, Faculty of Medicine, University of Celal Bayar, Manisa, Turkey
| | - Cüneyt Temiz
- Department of Neurosurgery, Faculty of Medicine, University of Celal Bayar, 45030 Manisa, Turkey
| |
Collapse
|
7
|
Mortazavi MM, Verma K, Tubbs RS, Theodore N. Non-pharmacological experimental treatments for spinal cord injury: a review. Childs Nerv Syst 2012; 28:2041-5. [PMID: 22890472 DOI: 10.1007/s00381-012-1889-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 08/03/2012] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Spinal cord injury is a complex result of primary mechanical damage and the secondary vascular compromise and inflammatory reactions. Depending on timing, different treatment modalities may have various effects. CONCLUSIONS We review the latest advances in terms of non-pharmacological experimental treatments.
Collapse
Affiliation(s)
- Martin M Mortazavi
- Department of Neurosurgery, Barrow Neurological Institute, Phoenix, AZ, USA
| | | | | | | |
Collapse
|
8
|
Al-Waili NS, Butler GJ, Beale J, Abdullah MS, Hamilton RWB, Lee BY, Lucus P, Allen MWW, Petrillo RL, Carrey Z, Finkelstein M. Hyperbaric oxygen in the treatment of patients with cerebral stroke, brain trauma, and neurologic disease. Adv Ther 2005; 22:659-78. [PMID: 16510383 DOI: 10.1007/bf02849960] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Hyperbaric oxygen (HBO) therapy has been used to treat patients with numerous disorders, including stroke. This treatment has been shown to decrease cerebral edema, normalize water content in the brain, decrease the severity of brain infarction, and maintain blood-brain barrier integrity. In addition, HBO therapy attenuates motor deficits, decreases the risks of sequelae, and prevents recurrent cerebral circulatory disorders, thereby leading to improved outcomes and survival. Hyperbaric oxygen also accelerates the regression of atherosclerotic lesions, promotes antioxidant defenses, and suppresses the proliferation of macrophages and foam cells in atherosclerotic lesions. Although no medical treatment is available for patients with cerebral palsy, in some studies, HBO therapy has improved the function of damaged cells, attenuated the effects of hypoxia on the neonatal brain, enhanced gross motor function and fine motor control, and alleviated spasticity. In the treatment of patients with migraine, HBO therapy has been shown to reduce intracranial pressure significantly and abort acute attacks of migraine, reduce migraine headache pain, and prevent cluster headache. In studies that investigated the effects of HBO therapy on the damaged brain, the treatment was found to inhibit neuronal death, arrest the progression of radiation-induced neurologic necrosis, improve blood flow in regions affected by chronic neurologic disease as well as aerobic metabolism in brain injury, and accelerate the resolution of clinical symptoms. Hyperbaric oxygen has also been reported to accelerate neurologic recovery after spinal cord injury by ameliorating mitochondrial dysfunction in the motor cortex and spinal cord, arresting the spread of hemorrhage, reversing hypoxia, and reducing edema. HBO has enhanced wound healing in patients with chronic osteomyelitis. The results of HBO therapy in the treatment of patients with stroke, atherosclerosis, cerebral palsy, intracranial pressure, headache, and brain and spinal cord injury are promising and warrant further investigation.
Collapse
Affiliation(s)
- Noori S Al-Waili
- Life Support Technologies, Inc., and NewTechnologies, Inc., The Mount Vernon Hospital, Westchester Medical Center, New York Medical College, New York, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|