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Chen J, Shi Z, Zhang C, Xiong K, Zhao W, Wang Y. Oroxin A alleviates early brain injury after subarachnoid hemorrhage by regulating ferroptosis and neuroinflammation. J Neuroinflammation 2024; 21:116. [PMID: 38702778 PMCID: PMC11069275 DOI: 10.1186/s12974-024-03099-3] [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: 01/08/2024] [Accepted: 04/10/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Subarachnoid hemorrhage (SAH), a severe subtype of stroke, is characterized by notably high mortality and morbidity, largely due to the lack of effective therapeutic options. Although the neuroprotective potential of PPARg and Nrf2 has been recognized, investigative efforts into oroxin A (OA), remain limited in preclinical studies. METHODS SAH was modeled in vivo through filament perforation in male C57BL/6 mice and in vitro by exposing HT22 cells to hemin to induce neuronal damage. Following the administration of OA, a series of methods were employed to assess neurological behaviors, brain water content, neuronal damage, cell ferroptosis, and the extent of neuroinflammation. RESULTS The findings indicated that OA treatment markedly improved survival rates, enhanced neurological functions, mitigated neuronal death and brain edema, and attenuated the inflammatory response. These effects of OA were linked to the suppression of microglial activation. Moreover, OA administration was found to diminish ferroptosis in neuronal cells, a critical factor in early brain injury (EBI) following SAH. Further mechanistic investigations uncovered that OA facilitated the translocation of nuclear factor erythroid 2-related factor 2 (Nrf-2) from the cytoplasm to the nucleus, thereby activating the Nrf2/GPX4 pathway. Importantly, OA also upregulated the expression of FSP1, suggesting a significant and parallel protective effect against ferroptosis in EBI following SAH in synergy with GPX4. CONCLUSION In summary, this research indicated that the PPARg activator OA augmented the neurological results in rodent models and diminished neuronal death. This neuroprotection was achieved primarily by suppressing neuronal ferroptosis. The underlying mechanism was associated with the alleviation of cellular death through the Nrf2/GPX4 and FSP1/CoQ10 pathways.
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Affiliation(s)
- Junhui Chen
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Zhonghua Shi
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
| | - Chunlei Zhang
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China.
| | - Wei Zhao
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China
| | - Yuhai Wang
- Department of Neurosurgery, 904 th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, No. 101 Xingyuan North Road, Liangxi District, Wuxi, 214044, Jiangsu Province, China.
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Yin Y, Yan Y, Jin X, Fu Y, Chen Y. Netrin-1 Promotes M2 Type Activation and Inhibits Pyroptosis of Microglial Cells by Depressing RAC1/Nf-?B Pathway to Alleviate Inflammatory Pain. Physiol Res 2024; 73:305-314. [PMID: 38710054 PMCID: PMC11081182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 11/28/2023] [Indexed: 05/08/2024] Open
Abstract
Netrin-1 (NTN-1) plays a vital role in the progress of nervous system development and inflammatory diseases. However, the role and underlying mechanism of NTN-1 in inflammatory pain (IP) are unclear. BV2 microglia were treated with LPS to mimic the cell status under IP. Adeno-associated virus carrying the NTN-1 gene (AAV-NTN-1) was used to overexpress NTN-1. Complete Freund's Adjuvant (CFA)-induced mouse was recruited as an in vivo model. MTT and commercial kits were utilized to evaluate cell viability and cell death of BV2 cells. The mRNA expressions and secretions of cytokines were measured using the ELISA method. Also, the pyroptosis and activation of BV2 cells were investigated based on western blotting. To verify the role of Rac1/NF-kappaB signaling, isochamaejasmin (ISO) and AAV-Rac1 were presented. The results showed that NTN-1 expression was decreased in LPS-treated BV2 microglia and spinal cord tissues of CFA-injected mice. Overexpressing NTN-1 dramatically reversed cell viability and decreased cell death rate of BV2 microglia under lipopolysaccharide (LPS) stimulation, while the level of pyroptosis was inhibited. Besides, AAV-NTN-1 rescued the activation of microglia and inflammatory injury induced by LPS, decreasing IBA-1 expression, as well as iNOS, IL-1beta and IL-6 secretions. Meanwhile AAV-NTN-1 promoted the anti-inflammation response, including increases in Arg-1, IL-4 and IL-10 levels. In addition, the LPS-induced activation of Rac1/NF-kappaB signaling was depressed by NTN-1 overexpression. The same results were verified in a CFA-induced mouse model. In conclusion, NTN-1 alleviated IP by suppressing pyroptosis and promoting M2 type activation of microglia via inhibiting Rac1/NF-?B signaling, suggesting the protective role of NTN-1 in IP. Keywords: Netrin-1, Inflammatory pain, Pyroptosis, Microglia M2 activation, Rac1/NF-kappaB.
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Affiliation(s)
- Y Yin
- Department of Anesthesiology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, Jiangxi, China.
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Hu Q, Zhang R, Dong X, Yang D, Yu W, Du Q. Huperzine A ameliorates neurological deficits after spontaneous subarachnoid hemorrhage through endothelial cell pyroptosis inhibition. Acta Biochim Biophys Sin (Shanghai) 2024; 56:645-656. [PMID: 38529553 DOI: 10.3724/abbs.2024037] [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] [Indexed: 03/27/2024] Open
Abstract
Spontaneous subarachnoid hemorrhage (SAH) is a kind of hemorrhagic stroke which causes neurological deficits in survivors. Huperzine A has a neuroprotective effect, but its role in SAH is unclear. Therefore, we explore the effect of Huperzine A on neurological deficits induced by SAH and the related mechanism. In this study, Evans blue assay, TUNEL staining, immunofluorescence, western blot analysis, and ELISA are conducted. We find that Huperzine A can improve neurological deficits and inhibit the apoptosis of nerve cells in SAH rats. Huperzine A treatment can improve the upregulation of brain water content, damage of blood-brain barrier, fibrinogen and matrix metalloprotein 9 expressions and the downregulation of ZO-1 and occludin expressions induced by SAH. Huperzine A inhibit the expressions of proteins involved in pyroptosis in endothelial cells in SAH rats. The increase in MDA content and decrease in SOD activity in SAH rats can be partly reversed by Huperzine A. The ROS inducer H 2O 2 can induce pyroptosis and inhibit the expressions of ZO-1 and occludin in endothelial cells, which can be blocked by Huperzine A. In addition, the increase in the entry of p65 into the nucleus in endothelial cells can be partly reversed by Huperzine A. Huperzine A may delay the damage of blood-brain barrier in SAH rats by inhibiting oxidative stress-mediated pyroptosis and tight junction protein expression downregulation through the NF-κB pathway. Overall, Huperzine A may have clinical value for treating SAH.
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Affiliation(s)
- Qiang Hu
- Department of Neurosurgery, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310000, China
- Department of Neurosurgery, Nanjing Medical University Affiliated Hangzhou Hospital, Hangzhou First People's Hospital, Hangzhou 310000, China
| | - Rong Zhang
- Medical Examination Center, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310000, China
| | - Xiaoqiao Dong
- Department of Neurosurgery, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310000, China
- Department of Neurosurgery, Nanjing Medical University Affiliated Hangzhou Hospital, Hangzhou First People's Hospital, Hangzhou 310000, China
| | - Dingbo Yang
- Department of Neurosurgery, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310000, China
- Department of Neurosurgery, Nanjing Medical University Affiliated Hangzhou Hospital, Hangzhou First People's Hospital, Hangzhou 310000, China
| | - Wenhua Yu
- Department of Neurosurgery, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310000, China
- Department of Neurosurgery, Nanjing Medical University Affiliated Hangzhou Hospital, Hangzhou First People's Hospital, Hangzhou 310000, China
| | - Quan Du
- Department of Neurosurgery, Affiliated Hangzhou First People's Hospital, Westlake University School of Medicine, Hangzhou 310000, China
- Department of Neurosurgery, Nanjing Medical University Affiliated Hangzhou Hospital, Hangzhou First People's Hospital, Hangzhou 310000, China
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Chen J, Wang Y, Li M, Zhu X, Liu Z, Chen Q, Xiong K. Netrin-1 Alleviates Early Brain Injury by Regulating Ferroptosis via the PPARγ/Nrf2/GPX4 Signaling Pathway Following Subarachnoid Hemorrhage. Transl Stroke Res 2024; 15:219-237. [PMID: 36631632 DOI: 10.1007/s12975-022-01122-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 12/20/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023]
Abstract
Subarachnoid hemorrhage (SAH) is a type of stroke with high morbidity and mortality. Netrin-1 (NTN-1) can alleviate early brain injury (EBI) following SAH by enhancing peroxisome proliferator-activated receptor gamma (PPARγ), which is an important transcriptional factor modulating lipid metabolism. Ferroptosis is a newly discovered type of cell death related to lipid metabolism. However, the specific function of ferroptosis in NTN-1-mediated neuroprotection following SAH is still unclear. This study aimed to evaluate the neuroprotective effects and the possible molecular basis of NTN-1 in SAH-induced EBI by modulating neuronal ferroptosis using the filament perforations model of SAH in mice and the hemin-stimulated neuron injury model in HT22 cells. NTN-1 or a vehicle was administered 2 h following SAH. We examined neuronal death, brain water content, neurological score, and mortality. NTN-1 treatment led to elevated survival probability, greater survival of neurons, and increased neurological score, indicating that NTN-1-inhibited ferroptosis ameliorated neuron death in vivo/in vitro in response to SAH. Furthermore, NTN-1 treatment enhanced the expression of PPARγ, nuclear factor erythroid 2-related factor 2 (Nrf2), and glutathione peroxidase 4 (GPX4), which are essential regulators of ferroptosis in EBI after SAH. The findings show that NTN-1 improves neurological outcomes in mice and protects neurons from death caused by neuronal ferroptosis. Furthermore, the mechanism underlying NTN-1 neuroprotection is correlated with the inhibition of ferroptosis, attenuating cell death via the PPARγ/Nrf2/GPX4 pathway and coenzyme Q10-ferroptosis suppressor protein 1 (CoQ10-FSP1) pathway.
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Affiliation(s)
- Junhui Chen
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
- Department of Neurosurgery, Renmin Hospital of Wuhan University, No. 9 Zhangzhidong Road, Wuchang District, Wuhan, 430072, Hubei Province, China
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, 214044, China
| | - Yuhai Wang
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, 214044, China
| | - Mingchang Li
- Department of Neurosurgery, Renmin Hospital of Wuhan University, No. 9 Zhangzhidong Road, Wuchang District, Wuhan, 430072, Hubei Province, China
| | - Xun Zhu
- Department of Neurosurgery, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhuanghua Liu
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, 214044, China
| | - Qianxue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, No. 9 Zhangzhidong Road, Wuchang District, Wuhan, 430072, Hubei Province, China.
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China.
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Chen J, Li M, Chen L, Xu Q, Yan T, Zhang C, Hu P, He J, Zhu X, Zhu X, Wang Y. Pioglitazone in spontaneous subarachnoid hemorrhage: study protocol of a multicenter, double-blind, randomized trial (PSSH). Front Pharmacol 2024; 14:1323292. [PMID: 38249343 PMCID: PMC10796591 DOI: 10.3389/fphar.2023.1323292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 12/18/2023] [Indexed: 01/23/2024] Open
Abstract
Introduction: Spontaneous subarachnoid hemorrhage (SAH), is a disorder that may be fatal and is primarily caused by a ruptured brain aneurysm. Despite significant leaps forward in the methods to produce aneurysms, the long-term outcomes did not much improve. Pioglitazone is a medication that has been authorized by the FDA as an agonist for the peroxisome proliferator-activated receptor-gamma (PPARγ). Pioglitazone or PPARγ has neuroprotective benefits in animal experiments both during and after traumatic brain injury (TBI) and SAH. Nevertheless, the treatment impact of Pioglitazone on humans is still unknown at this time. As a result, we will conduct a randomized, double-blind, placebo-controlled trial to explore the impact of pioglitazone on SAH. Methods/Design: This trial will recruit 400 patients with SAH from four Chinese hospitals. These patients will be equally and randomly assigned to Pioglitazone and placebo control groups for up to 30 days. Scores on the modified Rankin scale (mRS) are the primary outcomes. The secondary outcomes are a 30-day all-cause mortality rate, 6 months of Montreal cognitive assessment (Mo-CA), delayed cerebral ischemia, the requirement for intensive care, the incidence of sepsis, etc. All serious adverse events (SAEs) were recorded during the hospital. Every primary and safety analysis was conducted based on the intention-to-treat technique. The participants were given either a matching placebo or 15 mg of pioglitazone, with dose titrated to a target of 45 mg daily. Data on the therapeutic use of pioglitazone after SAH will be provided as a consequence of the findings of this experiment. In addition, this pilot trial is the first to prospectively investigate the effectiveness and safety of pioglitazone in patients with SAH. Ethics and dissemination: Ethics approval was obtained from the Medical Ethics Committee of 904th Hospital of Joint Logistic Support Force of PLA (Wuxi Taihu Hospital, approval No. 20220701). The findings of the trial will be presented at conferences, discussed in relevant patient groups, and published in peer-reviewed journals. Clinical Trial Registration: clinicaltrials.gov, identifier ChiCTR2200062954.
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Affiliation(s)
- Junhui Chen
- Department of Neurosurgery, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan Province, China
| | - Mingchang Li
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lei Chen
- Department of Neurosurgery, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
- Department of Neurosurgery, Wuxi Huishan Peoples Hospital, Wuxi, Jiangsu, China
| | - Qinyi Xu
- Department of Neurosurgery, Wuxi Huishan Peoples Hospital, Wuxi, Jiangsu, China
| | - Tengfeng Yan
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chunlei Zhang
- Department of Neurosurgery, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Ping Hu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jianqing He
- Department of Neurosurgery, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Xun Zhu
- Department of Neurosurgery, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Xingen Zhu
- Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuhai Wang
- Department of Neurosurgery, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
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Hui Y, Zhao H, Shi L, Zhang H. Traumatic Brain Injury-Mediated Neuroinflammation and Neurological Deficits are Improved by 8-Methoxypsoralen Through Modulating PPARγ/NF-κB Pathway. Neurochem Res 2023; 48:625-640. [PMID: 36319778 DOI: 10.1007/s11064-022-03788-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/08/2022] [Accepted: 10/07/2022] [Indexed: 01/18/2023]
Abstract
8-Methoxypsoralen (8-MOP) has anti-inflammatory, antioxidant and tissue-repairing abilities. Here, we probed the function and mechanism of 8-MOP in traumatic brain injury (TBI). The in-vivo TBI model was constructed in Sprague-Dawley (SD) rats using controlled cortical impact (CCI) surgery. In parallel, BV2 microglia and HT22 neurons were activated by lipopolysaccharide (LPS) to establish an in-vitro model. The modified neurological score (mNSS) and the Morris water maze experiment were employed to evaluate the rats' neurological functions. The rats' brain edema was assessed by the dry and wet method, and neuronal apoptosis in damaged brain tissues was monitored by terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) and Nissl's staining. Immunohistochemistry (IHC) was applied to verify Iba1-microglial activation in brain lesions of rats. The expression of inflammatory cytokines in BV2 microglia and HT22 neurons in the injured lesion of TBI rats was examined by the enzyme-linked immunosorbent assay (ELISA). The levels of iNOS, COX2, TLR4, PPARγ, STAT3, and NF-κB in brain lesions, BV2 microglia and HT22 neurons were compared by Western blot. As a result, 8-MOP administration reduced inflammation and LPS-induced neuronal damage in BV2 microglia. In vivo, 8-MOP treatment relieved neurological deficits in TBI rats, improved cognitive, learning and motor functions and mitigated brain edema and neuroinflammation induced by TBI. Furthermore, LPS or TBI activated the NF-κB and STAT3 pathways and repressed the PPARγ expression. However, 8-MOP treatment attenuated NF-κB and STAT3 phosphorylation and elevated PPARγ levels. Hence, 8-MOP exerts neuroprotective and anti-inflammatory effects in TBI rats by modulating the PPARγ/NF-κB pathway.
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Affiliation(s)
- Yuzuo Hui
- Department of Neurosurgery, Liaocheng People's Hospital, 67 Dongchang Road, Liaocheng, 252000, Shandong, China
| | - Han Zhao
- Department of Neurosurgery, Taian Central Hospital, Taian, 271000, Shandong, China
| | - Lei Shi
- Shandong Rongjun General Hospital, Ward 7, Jinan, 250000, Shandong, China
| | - Haitao Zhang
- Department of Neurosurgery, Liaocheng People's Hospital, 67 Dongchang Road, Liaocheng, 252000, Shandong, China.
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Wu Y, Zhang J, Feng X, Jiao W. Omega-3 polyunsaturated fatty acids alleviate early brain injury after traumatic brain injury by inhibiting neuroinflammation and necroptosis. Transl Neurosci 2023; 14:20220277. [PMID: 36895263 PMCID: PMC9990778 DOI: 10.1515/tnsci-2022-0277] [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: 12/31/2022] [Revised: 01/28/2023] [Accepted: 02/10/2023] [Indexed: 03/08/2023] Open
Abstract
Presently, traumatic brain injury (TBI) is a leading contributor to disability and mortality that places a considerable financial burden on countries all over the world. Docosahexaenoic acid and eicosapentaenoic acid are two kinds of omega-3 polyunsaturated fatty acids (ω-3 PUFA), both of which have been shown to have beneficial biologically active anti-inflammatory and antioxidant effects. However, the neuroprotective effect of ω-3 PUFA in TBI has not been proven, and its probable mechanism remains obscure. We suppose that ω-3 PUFA can alleviate early brain injury (EBI) via regulating necroptosis and neuroinflammation after TBI. This research intended to examine the neuroprotective effect of ω-3 and its possible molecular pathways in a C57BL/6 mice model of EBI caused by TBI. Cognitive function was assessed by measuring the neuronal necroptosis, neuroinflammatory cytokine levels, brain water content, and neurological score. The findings demonstrate that administration of ω-3 remarkably elevated neurological scores, alleviated cerebral edema, and reduced inflammatory cytokine levels of NF-κB, interleukin-1β (IL-1β), IL-6, and TNF-α, illustrating that ω-3 PUFA attenuated neuroinflammation, necroptosis, and neuronal cell death following TBI. The PPARγ/NF-κB signaling pathway is partially responsible for the neuroprotective activity of ω-3. Collectively, our findings illustrate that ω-3 can alleviate EBI after TBI against neuroinflammation and necroptosis.
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Affiliation(s)
- Yali Wu
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, 214044, China
| | - Jing Zhang
- Department of Neurosurgery, The Fourth People's Hospital of Taizhou, Taizhou, 225300, China
| | - Xiaoyan Feng
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, 214044, China
| | - Wei Jiao
- Department of Nursing, 904th Hospital of Joint Logistic Support Force of PLA, 101 Xing Yuan North Road, Wuxi, 214044, China
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Association of Netrin 1 with hsCRP in Subjects with Obesity and Recent Diagnosis of Type 2 Diabetes. Curr Issues Mol Biol 2022; 45:134-140. [PMID: 36661496 PMCID: PMC9857863 DOI: 10.3390/cimb45010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/07/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
Netrin 1 (Ntn1) is a cell migration protein with an anti-inflammatory effect, which may play a key role in the pathological development of type 2 diabetes (T2D). In this study, we evaluate the relationships between the serum concentrations of Ntn1, glucose, and high-sensitivity C-reactive Protein (hsCRP). We carried out a cross-sectional study including 90 individuals divided into three groups (n = 30): healthy subjects, individuals with obesity without glucose alterations, and individuals with newly diagnosed T2D. Serum concentrations of Ntn1 and hs-CRP were determined by enzyme-linked immunosorbent assay (ELISA). The serum concentration of Ntn1 was higher in individuals with newly diagnosed T2D (0.33 ± 0.22 ng/mL), in comparison to healthy subjects and individuals with obesity (0.13 ± 0.06 and 0.15 ± 0.07 ng/mL, respectively). In addition, we observed a positive association between the levels of Ntn1 and hsCRP (rho = 0.443; p < 0.001) as well as with serum glucose (rho = −0.110; p = 0.05). The serum concentration of Ntn1 was higher in individuals with T2D, in comparison with the other groups in this study, and presented a positive correlation with hsCRP. Therefore, Ntn1 can be considered a promising risk biomarker and a potential therapeutic target for T2D.
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Chen J, Li M, Liu Z, Wang Y, Xiong K. Molecular mechanisms of neuronal death in brain injury after subarachnoid hemorrhage. Front Cell Neurosci 2022; 16:1025708. [PMID: 36582214 PMCID: PMC9793715 DOI: 10.3389/fncel.2022.1025708] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/08/2022] [Indexed: 12/15/2022] Open
Abstract
Subarachnoid haemorrhage (SAH) is a common cerebrovascular disease with high disability and mortality rates worldwide. The pathophysiological mechanisms involved in an aneurysm rupture in SAH are complex and can be divided into early brain injury and delayed brain injury. The initial mechanical insult results in brain tissue and vascular disruption with hemorrhages and neuronal necrosis. Following this, the secondary injury results in diffused cerebral damage in the peri-core area. However, the molecular mechanisms of neuronal death following an aneurysmal SAH are complex and currently unclear. Furthermore, multiple cell death pathways are stimulated during the pathogenesis of brain damage. Notably, particular attention should be devoted to necrosis, apoptosis, autophagy, necroptosis, pyroptosis and ferroptosis. Thus, this review discussed the mechanism of neuronal death and its influence on brain injury after SAH.
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Affiliation(s)
- Junhui Chen
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan, China,Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China,Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Mingchang Li
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhuanghua Liu
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Yuhai Wang
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China,*Correspondence: Yuhai Wang,
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, Hunan, China,Kun Xiong,
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Zhang Y, Lan J, Zhao D, Ruan C, Zhou J, Tan H, Bao Y. Netrin-1 upregulates GPX4 and prevents ferroptosis after traumatic brain injury via the UNC5B/Nrf2 signaling pathway. CNS Neurosci Ther 2022; 29:216-227. [PMID: 36468399 PMCID: PMC9804081 DOI: 10.1111/cns.13997] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/04/2022] [Accepted: 09/09/2022] [Indexed: 12/12/2022] Open
Abstract
AIM We aimed to investigate the regulatory role of Netrin-1 (NTN1) in ferroptosis after traumatic brain injury (TBI) in mice. METHODS We assessed the expression pattern of NTN1 by RT-PCR, western blot, and immunofluorescence after establishing the TBI model in mice. After treatment with NTN1 shRNA or recombinant NTN1, we determined the biochemical and morphological changes associated with ferroptosis and netrin-1-related pathways. We used Nissl staining to assess lesion volume and Morris water maze and beam-walking test to evaluate ethological manifestation. RESULTS The mRNA and protein levels of NTN1 were upregulated after TBI. The application of NTN1 shRNA increased the number of FJB positive cells, malondialdehyde (MDA), and reactive oxygen species (ROSs) levels. However, the application of NTN1 recombinant had the opposite effect. Furthermore, knockdown or inhibition of GPX4, Nrf2, and UNC5B counteracted the effects of NTN1 recombinant. Intravenous injection of NTN1 recombinant reduced neuronal loss after CCI and improved motor and cognitive function. CONCLUSION NTN1 had a neuroprotective effect after TBI and inhibited ferroptosis via activating the UNC5B/Nrf2 pathway. These findings may provide potential therapeutic strategies for TBI.
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Affiliation(s)
- Yuanda Zhang
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Jin Lan
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Dongxu Zhao
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Cijie Ruan
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Jue Zhou
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Haoyuan Tan
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Yinghui Bao
- Department of Neurosurgery, Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
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11
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Cakir U, Ceran B, Tayman C. Two Useful Umbilical Biomarkers for Therapeutic Hypothermia Decision in Patients with Hypoxic İschemic Encephalopathy with Perinatal Asphyxia: Netrin-1 and Neuron Specific Enolase. Fetal Pediatr Pathol 2022; 41:977-986. [PMID: 35188847 DOI: 10.1080/15513815.2022.2041778] [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: 11/04/2022]
Abstract
Hypoxic-ischemic encephalopathy (HIE) has a high risk of mortality in addition to serious neurological damage. In this study, we investigated the values of umbilical cord netrin-1 (NT-1) and neuron specific enolase (NSE) levels in the early diagnosis of HIE stage II/III induced by neonatal asphyxia. In the study group, infants with gestational age ≥ 36 weeks who were diagnosed with HIE II/III were included. NT-1 and NSE levels were measured from the umbilical cord immediately after birth. Results were compared between HIE II/III and the healthy control group. Cutoff values for serum NT-1 and NSE were determined with receiver-operating characteristics curves and the area under the curve (AUC) was used to determine the diagnostic value of NT-1 and NSE levels in infants diagnosed with HIE II/III. NT-1 (358.3 ± 108.3 pg/mL) and NSE (52.97 ± 17.8 ng/mL) levels in the cord blood in the HIE group were significantly higher (p = .030, p = .001, respectively) than cord blood values in the control group (NT-1 (275.1 ± 84.6 pg/mL) and NSE (28.7 ± 16.3 ng/mL)). NT-1 cutoff value for HIE was 292.3 pg/mL and 34.7 ng/mL for NSE (AUC: 990, sensitivity: 94%, specificity 100% and AUC: 1.0, sensitivity: 100% vs. specificity 100%, respectively). NT-1 and NSE represent candidate biomarkers with high reliability in the prediction in newborns with moderate-to-severe HIE.
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Affiliation(s)
- Ufuk Cakir
- Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education, and Research Hospital, Ankara, Turkey
| | - Burak Ceran
- Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education, and Research Hospital, Ankara, Turkey
| | - Cuneyt Tayman
- Division of Neonatology, Health Sciences University, Zekai Tahir Burak Maternity, Education, and Research Hospital, Ankara, Turkey
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12
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Jin J, Duan J, Du L, Xing W, Peng X, Zhao Q. Inflammation and immune cell abnormalities in intracranial aneurysm subarachnoid hemorrhage (SAH): Relevant signaling pathways and therapeutic strategies. Front Immunol 2022; 13:1027756. [PMID: 36505409 PMCID: PMC9727248 DOI: 10.3389/fimmu.2022.1027756] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022] Open
Abstract
Intracranial aneurysm subarachnoid hemorrhage (SAH) is a cerebrovascular disorder associated with high overall mortality. Currently, the underlying mechanisms of pathological reaction after aneurysm rupture are still unclear, especially in the immune microenvironment, inflammation, and relevant signaling pathways. SAH-induced immune cell population alteration, immune inflammatory signaling pathway activation, and active substance generation are associated with pro-inflammatory cytokines, immunosuppression, and brain injury. Crosstalk between immune disorders and hyperactivation of inflammatory signals aggravated the devastating consequences of brain injury and cerebral vasospasm and increased the risk of infection. In this review, we discussed the role of inflammation and immune cell responses in the occurrence and development of aneurysm SAH, as well as the most relevant immune inflammatory signaling pathways [PI3K/Akt, extracellular signal-regulated kinase (ERK), hypoxia-inducible factor-1α (HIF-1α), STAT, SIRT, mammalian target of rapamycin (mTOR), NLRP3, TLR4/nuclear factor-κB (NF-κB), and Keap1/nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/ARE cascades] and biomarkers in aneurysm SAH. In addition, we also summarized potential therapeutic drugs targeting the aneurysm SAH immune inflammatory responses, such as nimodipine, dexmedetomidine (DEX), fingolimod, and genomic variation-related aneurysm prophylactic agent sunitinib. The intervention of immune inflammatory responses and immune microenvironment significantly reduces the secondary brain injury, thereby improving the prognosis of patients admitted to SAH. Future studies should focus on exploring potential immune inflammatory mechanisms and developing additional therapeutic strategies for precise aneurysm SAH immune inflammatory regulation and genomic variants associated with aneurysm formation.
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Affiliation(s)
- Jing Jin
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan, China,Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Jian Duan
- Department of Cerebrovascular Disease, Suining Central Hospital, Suining, Sichuan, China
| | - Leiya Du
- 4Department of Oncology, The Second People Hospital of Yibin, Yibin, Sichuan, China
| | - Wenli Xing
- Department of Cerebrovascular Disease, Suining Central Hospital, Suining, Sichuan, China
| | - Xingchen Peng
- Department of Biotherapy, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China,*Correspondence: Qijie Zhao, ; Xingchen Peng,
| | - Qijie Zhao
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan, China,*Correspondence: Qijie Zhao, ; Xingchen Peng,
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13
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Xu J, Li Q, Xu CY, Mao S, Jin JJ, Gu W, Shi Y, Zou CF, Ye L. Obstructive sleep apnea aggravates neuroinflammation and pyroptosis in early brain injury following subarachnoid hemorrhage via ASC/HIF-1α pathway. Neural Regen Res 2022; 17:2537-2543. [PMID: 35535908 PMCID: PMC9120669 DOI: 10.4103/1673-5374.339000] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/24/2021] [Accepted: 01/17/2022] [Indexed: 11/04/2022] Open
Abstract
Obstructive sleep apnea can worsen the prognosis of subarachnoid hemorrhage. However, the underlying mechanism remains unclear. In this study, we established a mouse model of subarachnoid hemorrhage using the endovascular perforation method and exposed the mice to intermittent hypoxia for 8 hours daily for 2 consecutive days to simulate sleep apnea. We found that sleep apnea aggravated brain edema, increased hippocampal neuron apoptosis, and worsened neurological function in this mouse model of subarachnoid hemorrhage. Then, we established an in vitro HT-22 cell model of hemin-induced subarachnoid hemorrhage/intermittent hypoxia and found that the cells died, and lactate dehydrogenase release increased, after 48 hours. We further investigated the underlying mechanism and found that sleep apnea increased the expression of hippocampal neuroinflammatory factors interleukin-1β, interleukin-18, interleukin-6, nuclear factor κB, pyroptosis-related protein caspase-1, pro-caspase-1, and NLRP3, promoted the proliferation of astrocytes, and increased the expression of hypoxia-inducible factor 1α and apoptosis-associated speck-like protein containing a CARD, which are the key proteins in the hypoxia-inducible factor 1α/apoptosis-associated speck-like protein containing a CARD signaling pathway. We also found that knockdown of hypoxia-inducible factor 1α expression in vitro greatly reduced the damage to HY22 cells. These findings suggest that sleep apnea aggravates early brain injury after subarachnoid hemorrhage by aggravating neuroinflammation and pyroptosis, at least in part through the hypoxia-inducible factor 1α/apoptosis-associated speck-like protein containing a CARD signaling pathway.
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Affiliation(s)
- Jun Xu
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Qian Li
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Chen-Yu Xu
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Shan Mao
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Jia-Jia Jin
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Wei Gu
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Ying Shi
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Chun-Fang Zou
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
- Department of Respiration, Nanjing Yuhua Hospital, Yuhua Branch of Nanjing First Hospital, Nanjing, Jiangsu Province, China
| | - Liang Ye
- Department of Respiration, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China
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14
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Lu W, Zhu Z, Shi D, Li X, Luo J, Liao X. Cerebrolysin alleviates early brain injury after traumatic brain injury by inhibiting neuroinflammation and apoptosis via TLR signaling pathway. Acta Cir Bras 2022; 37:e370605. [PMID: 36074398 PMCID: PMC9448247 DOI: 10.1590/acb370605] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 05/03/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose: Traumatic brain injury (TBI) is a major cause of death and disability. Cerebrolysin (CBL) has been reported to be anti-inflammatory by reducing reactive oxygen species (ROS) production. However, the neuroprotection of CBL in TBI and the potential mechanism are unclear. We aimed to investigate the neuroprotection and mechanisms of CBL in TBI. Methods: The TBI model was established in strict accordance with the Feeney weight-drop model of focal injury. The neurological score, brain water content, neuroinflammatory cytokine levels, and neuronal damage were evaluated. The involvement of the early brain injury modulatory pathway was also investigated. Results: Following TBI, the results showed that CBL administration increased neurological scores and decreased brain edema by alleviating blood‑brain barrier (BBB) permeability, upregulating tight junction protein (ZO‑1) levels, and decreasing the levels of the inflammatory cytokines tumor necrosis factor‑α (TNF‑α), interleukin‑1β (IL‑1β), IL‑6, and NF‑κB. The TUNEL assay showed that CBL decreased hippocampal neuronal apoptosis after TBI and decreased the protein expression levels of caspase‑3 and Bax, increasing the levels of Bcl‑2. The levels of Toll‑like receptor 2 (TLR2) and TLR4 were significantly decreased after CBL treatment. In TBI patients, CBL can also decrease TNF‑α, IL‑1β, IL‑6, and NF‑κB levels. This result indicates that CBL‑mediated inhibition of neuroinflammation and apoptosis ameliorated neuronal death after TBI. The neuroprotective capacity of CBL is partly dependent on the TLR signaling pathway. Conclusions: Taken together, the results of this study indicate that CBL can improve neurological outcomes and reduce neuronal death against neuroinflammation and apoptosis via the TLR signaling pathway in mice.
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Affiliation(s)
- Weihong Lu
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Department of Anesthesiology - Wuxi, China
| | - Zhonghua Zhu
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Department of Anesthesiology - Wuxi, China
| | - Dongliang Shi
- MD. Anhui Medical University - Wuxi Clinical College - 904th Hospital of Joint Logistic Support Force of PLA - Department of Neurosurgery - Wuxi, China
| | - Xiaoyu Li
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Department of Anesthesiology - Wuxi, China
| | - Jingzhi Luo
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Department of Anesthesiology - Wuxi, China
| | - Xingzhi Liao
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Department of Anesthesiology - Wuxi, China
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15
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Wu X, Jiao W, Chen J, Tao Y, Zhang J, Wang Y. Ulinastatin alleviates early brain injury after intracerebral hemorrhage by inhibiting oxidative stress and neuroinflammation via ROS/MAPK/Nrf2 signaling pathway. Acta Cir Bras 2022; 37:e370606. [PMID: 36074399 PMCID: PMC9448248 DOI: 10.1590/acb370606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 05/11/2022] [Indexed: 11/26/2022] Open
Abstract
Purpose: Spontaneous intracerebral hemorrhage (ICH) is still a major public health problem, with high mortality and disability. Ulinastatin (UTI) was purified from human urine and has been reported to be anti-inflammatory, organ protective, and antioxidative stress. However, the neuroprotection of UTI in ICH has not been confirmed, and the potential mechanism is unclear. In the present study, we aimed to investigate the neuroprotection and potential molecular mechanisms of UTI in ICH-induced early brain injury in a C57BL/6 mouse model. Methods: The neurological score, brain water content, neuroinflammatory cytokine levels, oxidative stress levels, and neuronal damage were evaluated. Results: UTI treatment markedly increased the neurological score, alleviated brain edema, decreased the levels of the inflammatory cytokines tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), IL-6, and NF-κB, decreased the levels of reactive oxygen species (ROS) and malondialdehyde (MDA), and upregulated the levels of glutathione (GSH), superoxide dismutase (SOD), and Nrf2. This finding indicated that UTI-mediated inhibition of neuroinflammation and oxidative stress alleviated neuronal damage after ICH. The neuroprotective capacity of UTI is partly dependent on the ROS/MAPK/Nrf2 signaling pathway. Conclusions: UTI improves neurological outcomes in mice and reduces neuronal death by protecting against neural neuroinflammation and oxidative stress.
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Affiliation(s)
- Xi Wu
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Anhui Medical University - Wuxi Clinical College - Department of Neurosurgery - Wuxi, China
| | - Wei Jiao
- MD. 904th Hospital of Joint Logistic Support Force of PLA - Anhui Medical University - Wuxi Clinical College - Department of Neurosurgery - Wuxi, China
| | - Junhui Chen
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Anhui Medical University - Wuxi Clinical College - Department of Neurosurgery - Wuxi, China
| | - Yunna Tao
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Anhui Medical University - Wuxi Clinical College - Department of Neurosurgery - Wuxi, China
| | - Jing Zhang
- BS. 904th Hospital of Joint Logistic Support Force of PLA - Anhui Medical University - Wuxi Clinical College - Department of Neurosurgery - Wuxi, China
| | - Yuhai Wang
- PhD. 904th Hospital of Joint Logistic Support Force of PLA - Anhui Medical University - Wuxi Clinical College - Department of Neurosurgery - Wuxi, China
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16
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Shen J, Han Q, Li W, Chen X, Lu J, Zheng J, Xue S. miR-383-5p Regulated by the Transcription Factor CTCF Affects Neuronal Impairment in Cerebral Ischemia by Mediating Deacetylase HDAC9 Activity. Mol Neurobiol 2022; 59:6307-6320. [PMID: 35927544 DOI: 10.1007/s12035-022-02840-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/01/2022] [Indexed: 11/26/2022]
Abstract
Stroke, the leading cause of long-term disability worldwide, is caused by the blockage or hemorage of cerebral arteries. The resultant cerebral ischemia causes local neuronal death and brain injury. Histone deacetylase 9 (HDAC9) has been reported to be elevated in ischemic brain injury, but its mechanism in stroke is still enigmatic. The present study aimed to unveil the manner of regulation of HDAC9 expression and the effect of HDAC9 activation on neuronal function in cerebral ischemia. MicroRNAs (miRNAs) targeting HDAC9 were predicted utilizing bioinformatics analysis. We then constructed the oxygen glucose deprivation (OGD) cell model and the middle cerebral artery occlusion (MCAO) rat model, and elucidated the expression of CCCTC binding factor (CTCF)/miR-383-5p/HDAC9. Targeting between miR-383-5p and HDAC9 was verified by dual-luciferase reporter assay and RNAi. After conducting an overexpression/knockdown assay, we assessed neuronal impairment and brain injury. We found that CTCF inhibited miR-383-5p expression via its enrichment in the promoter region of miR-383-5p, whereas the miR-383-5p targeted and inhibited HDAC9 expression. In the OGD model and the MCAO model, we confirmed that elevation of HDAC9 regulated by the CTCF/miR-383-5p/HDAC9 pathway mediated apoptosis induced by endoplasmic reticulum stress, while reduction of HDAC9 alleviated apoptosis and the symptoms of cerebral infarction in MCAO rats. Thus, the CTCF/miR-383-5p/HDAC9 pathway may present a target for drug development against ischemic brain injury.
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Affiliation(s)
- Jun Shen
- Department of Neurology, The First Affiliated Hospital of Soochow University, No.188, Shizi Road, Suzhou, 215006, People's Republic of China
- Department of Neurology, The Affiliated Huai'an Hospital of Xuzhou Medical University & The Second People's Hospital of Huai'an, Huai'an, 223302, People's Republic of China
| | - Qiu Han
- Department of Neurology, Huai'an First People's Hospital & The Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical University, Huai'an, 223300, People's Republic of China
| | - Wangjun Li
- Department of Neurology, Changshu No. 2 People's Hospital (The 5th Clinical Medical College of Yangzhou University), Changshu, 215501, People's Republic of China
| | - Xiaochang Chen
- Department of Neurology, Hongze Huai'an District People's Hospital, No. 102, Huai'an, 223100, People's Republic of China.
| | - Jingmin Lu
- Department of Neurology, The Affiliated Huai'an Hospital of Xuzhou Medical University & The Second People's Hospital of Huai'an, Huai'an, 223302, People's Republic of China
| | - Jinyu Zheng
- Department of Neurosurgery, The Affiliated Huai'an Hospital of Xuzhou Medical University & The Second People's Hospital of Huai'an, Huai'an, 223302, People's Republic of China
| | - Shouru Xue
- Department of Neurology, The First Affiliated Hospital of Soochow University, No.188, Shizi Road, Suzhou, 215006, People's Republic of China.
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17
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Arisaema heterophyllum Blume Monomer Stigmasterol Targets PPAR γ and Inhibits the Viability and Tumorigenicity of Lung Adenocarcinoma Cells NCI-H1975. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:5377690. [PMID: 35911149 PMCID: PMC9328949 DOI: 10.1155/2022/5377690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 11/18/2022]
Abstract
To clarify the regulatory effect and molecular mechanism of Arisaema heterophyllum Blume (AhBl) monomer stigmasterol on lung adenocarcinoma in human lung adenocarcinoma cells NCI-H1975 cultured in vitro and in nude mice. Oil red O staining, free fatty acid detection, adenosine triphosphate (ATP), and NADPH were applied to elucidate the regulatory effect of stigmasterol on the energy metabolism of NCI-H1975 cells. Simultaneously, colony formation assay and nude mouse tumorigenesis were performed to clarify the underlying mechanisms of stigmasterol on the proliferation and tumorigenesis of NCI-H1975 cells. Furthermore, peroxisome proliferator-activated receptor gamma (PPARγ) inhibitor GW9662 was supplemented to determine the expression changes of cyclins to clarify the regulation mechanism of stigmasterol. The results revealed that stigmasterol administration markedly inhibited the viability but promoted lipid deposition of NCI-H1975 cells. Meanwhile, the reduction of cell energy metabolism affected cell proliferation and colony formation. qPCR and western blot assays indicated that stigmasterol played a role in regulating the expression of cyclins and PPARγ signaling pathway proteins. Nude mouse tumorigenesis suggested that tumor size and weight in the stigmasterol-treated group were apparently lower as compared with the control group. Tumor tissue cells developed varying degrees of degeneration and large areas of ischemic necrosis presented in the central and peripheral cells. Immunohistochemistry results revealed that Ki67 expression in the stigmasterol group was substantially inhibited, while PPARγ expression was greatly elevated as compared with the control. GW9662 could mediate the inhibitory effect of stigmasterol on NCI-H1975 cells. The current study demonstrated that stigmasterol targeted PPARγ and inhibited the viability and tumorigenicity of lung adenocarcinoma cells NCI-H1975.
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18
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Mi L, Min X, Chai Y, Zhang J, Chen X. NLRP1 Inflammasomes: A Potential Target for the Treatment of Several Types of Brain Injury. Front Immunol 2022; 13:863774. [PMID: 35707533 PMCID: PMC9189285 DOI: 10.3389/fimmu.2022.863774] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 04/28/2022] [Indexed: 12/28/2022] Open
Abstract
NOD-like receptor (NLR) family pyrin domain-containing 1 (NLRP1) is a member of the NLR family. The NLRP1 inflammasome consists of the NLRP1 protein, the adaptor protein apoptosis-associated speck-like protein containing a CARD domain, and the effector molecule pro-caspase-1. When stimulated, the inflammasome initiates the cleavage of pro-caspase-1 and converts it into its active form, caspase-1; then, caspase-1 facilitates the cleavage of the proinflammatory cytokines interleukin-1β and interleukin-18 into their active and secreted forms. In addition, caspase-1 also mediates the cleavage of gasdermin D, which leads to pyroptosis, an inflammatory form of cell death. Pathological events that damage the brain and result in neuropathological conditions can generally be described as brain injury. Neuroinflammation, especially that driven by NLRP1, plays a considerable role in the pathophysiology of brain injury, such as early brain injury (EBI) of subarachnoid hemorrhage, ischemic brain injury during stroke, and traumatic brain injury (TBI). In this article, a thorough overview of NLRP1 is presented, including its structure, mechanism of activation, and role in neuroinflammation. We also present recent studies on NLRP1 as a target for the treatment of EBI, ischemic brain injury, TBI, and other types of brain injury, thus highlighting the perspective of NLRP1 as an effective mediator of catastrophic brain injury.
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Affiliation(s)
- Liang Mi
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
| | - Xiaobin Min
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Baodi Clinical College, Tianjin Medical University, Tianjin, China
| | - Yan Chai
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
| | - Jianning Zhang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
| | - Xin Chen
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Neurological Institute, Key Laboratory of Posttrauma Neurorepair and Regeneration in Central Nervous System, Ministry of Education, Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin, China
- *Correspondence: Xin Chen,
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19
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Hu Y, Feng X, Chen J, Wu Y, Shen L. Hydrogen-rich saline alleviates early brain injury through inhibition of necroptosis and neuroinflammation via the ROS/HO-1 signaling pathway after traumatic brain injury. Exp Ther Med 2022; 23:126. [PMID: 34970349 PMCID: PMC8713175 DOI: 10.3892/etm.2021.11049] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/09/2021] [Indexed: 12/14/2022] Open
Abstract
Traumatic brain injury (TBI) has been recognized as a serious public health issue and a key contributor to disability and death, with a huge economic burden worldwide. Hydrogen, which is a slight and specific cytotoxic oxygen radical scavenger, has been demonstrated to ameliorate early brain injury (EBI) through reactive oxygen species (ROS), oxidative stress injury, apoptosis and necroptosis. Necroptosis refers to a type of programmed cell death process that has a vital function in neuronal cell death following TBI. The specific function of necroptosis in hydrogen-mediated neuroprotection after TBI, however, has yet to be determined. The present study aimed to examine the neuroprotective effects and possible molecular basis that underly hydrogen-rich saline in TBI-stimulated EBI by examining neural necroptosis in the C57BL/6 mouse model. The brain water content, neurological score, neuroinflammatory cytokines (NF-κΒ, TNF-α, IL-6 and IL-1β) and ROS were evaluated using flow cytometry. Malondialdehyde, superoxide dismutase (SOD) and glutathione (GSH) levels were evaluated using a biochemical kit. Receptor-interacting protein kinase (RIP)1, RIP3, Nrf2 and Heme oxygenase-1 (HO-1) were evaluated using western blotting. mRNA of Nrf2 and HO-1 were evaluated using quantitative PCR. Neuronal death was evaluated by TUNEL staining. The outcomes illustrated that hydrogen-rich saline treatment considerably enhanced the neurological score, increased neuronal survival, decreased the levels of serum MDA and brain ROS, increased the levels of serum GSH and SOD. In addition the protein expression levels of RIP1 and RIP3 and the cytokines NF-κB, TNF-α, IL-1β and IL-6 were downregulated compared with the TBI group, which demonstrated that hydrogen-rich saline-induced inhibition of necroptosis and neuroinflammation ameliorated neuronal death following TBI. The neuroprotective capacity of hydrogen-rich saline was demonstrated to be partly dependent on the ROS/heme oxygenase-1 signaling pathway. Taken together, the findings of the present study indicated that hydrogen-rich saline enhanced neurological outcomes in mice and minimized neuronal death by inducing protective effects against neural necroptosis as well as neuroinflammation.
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Affiliation(s)
- Yun Hu
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Xiaoyan Feng
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Junhui Chen
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Yan Wu
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Liuyan Shen
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
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20
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Wang L, Jiao W, Wu J, Zhang J, Tang M, Chen Y. Ulinastatin alleviates early brain injury after intracerebral hemorrhage by inhibiting necroptosis and neuroinflammation via MAPK/NF-κB signaling pathway. Acta Cir Bras 2022; 37:e370301. [PMID: 35584533 PMCID: PMC9109988 DOI: 10.1590/acb370301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 02/14/2022] [Indexed: 11/22/2022] Open
Abstract
Purpose: Spontaneous intracerebral hemorrhage (ICH) is a major public health problem
with a huge economic burden worldwide. Ulinastatin (UTI), a serine protease
inhibitor, has been reported to be anti-inflammatory, immune regulation, and
organ protection by reducing reactive oxygen species production, and
inflammation. Necroptosis is a programmed cell death mechanism that plays a
vital role in neuronal cell death after ICH. However, the neuroprotection of
UTI in ICH has not been confirmed, and the potential mechanism is unclear.
The present study aimed to investigate the neuroprotection and potential
molecular mechanisms of UTI in ICH-induced EBI in a C57BL/6 mouse model. Methods: The neurological score, brain water content, neuroinflammatory cytokine
levels, and neuronal damage were evaluated. The anti-inflammation
effectiveness of UTI in ICH patients also was evaluated. Results: UTI treatment markedly increased the neurological score, alleviate the brain
edema, decreased the inflammatory cytokine TNF-α, interleukin‑1β (IL‑1β),
IL‑6, NF‑κB levels, and RIP1/RIP3, which indicated that UTI-mediated
inhibition of neuroinflammation, and necroptosis alleviated neuronal damage
after ICH. UTI also can decrease the inflammatory cytokine of ICH patients.
The neuroprotective capacity of UTI is partly dependent on the MAPK/NF-κB
signaling pathway. Conclusions: UTI improves neurological outcomes in mice and reduces neuronal death by
protecting against neural neuroinflammation, and necroptosis.
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Affiliation(s)
- Li Wang
- Anhui Medical University, China
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21
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Feng X, Ma W, Chen J, Jiao W, Wang Y. Ulinastatin alleviates early brain injury after traumatic brain injury by inhibiting oxidative stress and apoptosis. Acta Cir Bras 2022; 37:e370108. [PMID: 35475892 PMCID: PMC9020790 DOI: 10.1590/acb370108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/19/2021] [Indexed: 12/11/2022] Open
Abstract
Purpose: Traumatic brain injury (TBI) remains a major public health problem and cause of death. Ulinastatin (UTI), a serine protease inhibitor, has been reported to have an anti-inflammatory effect and play a role in immunoregulation and organ protection by reducing reactive oxygen species (ROS) production, oxidative stress and inflammation. However, the neuroprotective of UTI in TBI has not been confirmed. Therefore, this study aimed to investigate the neuroprotection and potential molecular mechanisms of UTI in TBI-induced EBI in a C57BL/6 mouse model. Methods: The neurological score and brain water content were evaluated. Enzyme-linked immunosorbent assay was used to detect neuroinflammatory cytokine levels, ROS and malondialdehyde detection to evaluate oxidative stress levels, and TUNEL staining and western blotting to examine neuronal damages and their related mechanisms. Results: Treatment with UTI markedly increased the neurological score; alleviated brain oedema; decreased the inflammatory cytokine tumour necrosis factor a, interleukin-1β (IL-1β), IL-6 and nuclear factor kappa B (NF-kB) levels; inhibited oxidative stress; decreased caspase-3 and Bax protein expressions; and increased the Bcl-2 levels, indicating that UTI-mediated inhibition of neuroinflammation, oxidative stress and apoptosis ameliorated neuronal death after TBI. The neuroprotective capacity of UTI is partly dependent on the TLR4/NF-kB/p65 signalling pathway. Conclusions: Therefore, this study reveals that UTI improves neurological outcomes in mice and reduces neuronal death by protecting against neural neuroinflammation, oxidative stress and apoptosis.
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Affiliation(s)
- Xiaoyan Feng
- Wuxi Clinical College of Anhui Medical University, China
| | - Weiwei Ma
- Wuxi Clinical College of Anhui Medical University, China
| | - Junhui Chen
- Wuxi Clinical College of Anhui Medical University, China
| | - Wei Jiao
- Wuxi Clinical College of Anhui Medical University, China
| | - Yuhai Wang
- Wuxi Clinical College of Anhui Medical University, China
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22
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Tao Y, Xu Y, Shen M, Feng X, Wu Y, Wu Y, Shen L, Wang Y. The neuroprotection of cerebrolysin after spontaneous intracerebral hemorrhage through regulates necroptosis via Akt/ GSK3β signaling pathway. Acta Cir Bras 2021; 36:e361002. [PMID: 34817023 PMCID: PMC8610213 DOI: 10.1590/acb361002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 09/16/2021] [Indexed: 11/22/2022] Open
Abstract
PURPOSE Spontaneous intracerebral hemorrhage (ICH) is a major cause of death and disability with a huge economic burden worldwide. Cerebrolysin (CBL) has been previously used as a nootropic drug. Necroptosis is a programmed cell death mechanism that plays a vital role in neuronal cell death after ICH. However, the precise role of necroptosis in CBL neuroprotection following ICH has not been confirmed. METHODS In the present study, we aimed to investigate the neuroprotective effects and potential molecular mechanisms of CBL in ICH-induced early brain injury (EBI) by regulating neural necroptosis in the C57BL/6 mice model. Mortality, neurological score, brain water content, and neuronal death were evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining, Evans blue extravasation, Western blotting, and quantitative real-time polymerase chain reaction (PCR). RESULTS The results show that CBL treatment markedly increased the survival rate, neurological score, and neuron survival, and downregulated the protein expression of RIP1 and RIP3, which indicated that CBL-mediated inhibition of necroptosis, and ameliorated neuronal death after ICH. The neuroprotective capacity of CBL is partly dependent on the Akt/GSK3β signaling pathway. CONCLUSIONS CBL improves neurological outcomes in mice and reduces neuronal death by protecting against neural necroptosis.
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Affiliation(s)
| | | | | | | | - Yan Wu
- Anhui Medical University, China
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23
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Jiang B, Li Y, Dai W, Wu A, Wu H, Mao D. Hydrogen-rich saline alleviates early brain injury through regulating of ER stress and autophagy after experimental subarachnoid hemorrhage. Acta Cir Bras 2021; 36:e360804. [PMID: 34644772 PMCID: PMC8516430 DOI: 10.1590/acb360804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/20/2021] [Indexed: 02/07/2023] Open
Abstract
PURPOSE Subarachnoid hemorrhage (SAH) is a common complication of cerebral vascular disease. Hydrogen has been reported to alleviate early brain injury (EBI) through oxidative stress injury, reactive oxygen species (ROS), and autophagy. Autophagy is a programmed cell death mechanism that plays a vital role in neuronal cell death after SAH. However, the precise role of autophagy in hydrogen-mediated neuroprotection following SAH has not been confirmed. METHODS In the present study, the objective was to investigate the neuroprotective effects and potential molecular mechanisms of hydrogen-rich saline in SAH-induced EBI by regulating neural autophagy in the C57BL/6 mice model. Mortality, neurological score, brain water content, ROS, malondialdehyde (MDA), and neuronal death were evaluated. RESULTS The results show that hydrogen-rich saline treatment markedly increased the survival rate and neurological score, increased neuron survival, downregulated the autophagy protein expression of Beclin-1 and LC3, and endoplasmic reticulum (ER) stress. That indicates that hydrogen-rich saline-mediated inhibition of autophagy and ER stress ameliorate neuronal death after SAH. The neuroprotective capacity of hydrogen-rich saline is partly dependent on the ROS/Nrf2/heme oxygenase-1 (HO-1) signaling pathway. CONCLUSIONS The results of this study demonstrate that hydrogen-rich saline improves neurological outcomes in mice and reduces neuronal death by protecting against neural autophagy and ER stress.
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Affiliation(s)
| | | | | | - An Wu
- Wenzhou Medical University, China
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24
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Chen J, Zhang C, Yan T, Yang L, Wang Y, Shi Z, Li M, Chen Q. Atorvastatin ameliorates early brain injury after subarachnoid hemorrhage via inhibition of pyroptosis and neuroinflammation. J Cell Physiol 2021; 236:6920-6931. [PMID: 33792028 DOI: 10.1002/jcp.30351] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 02/13/2021] [Accepted: 02/16/2021] [Indexed: 12/15/2022]
Abstract
Subarachnoid hemorrhage (SAH) is a subtype of stroke with high mortality and morbidity due to the lack of effective therapy. Atorvastatin has been reported to alleviate early brain injury (EBI) following subarachnoid hemorrhage (SAH) via reducing reactive oxygen species, antiapoptosis, regulated autophagy, and neuroinflammation. Which was the related to the pyroptosis? Pyroptosis can be defined as a highly specific inflammatory programmed cell death, distinct from classical apoptosis and necrosis. However, the precise role of pyroptosis in atorvastatin-mediated neuroprotection following SAH has not been confirmed. The present study aimed to investigate the neuroprotection and potential molecular mechanisms of atorvastatin in the SAH-induced EBI via regulating neural pyroptosis using the filament perforation model of SAH in male C57BL/6 mice, and the hemin-induced neuron damage model in HT-22. Atorvastatin or vehicle was administrated 2 h after SAH and hemin-induced neuron damage. The mortality, neurological score, brain water content, and neuronal death were evaluated. The results show that the atorvastatin treatment markedly increased survival rate, neurological score, greater survival of neurons, downregulated the protein expression of NLRP1, cleaved caspase-1, interleukin-1β (IL-1β), and IL-18, which indicated that atorvastatin-inhibited pyroptosis and neuroinflammation, ameliorated neuron death in vivo/vitro subjected to SAH. Taken together, this study demonstrates that atorvastatin improved the neurological outcome in rats and reduced the neuron death by against neural pyroptosis and neuroinflammation.
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Affiliation(s)
- Junhui Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Chunlei Zhang
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Tengfeng Yan
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Lixiang Yang
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Yuhai Wang
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Zhonghua Shi
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, China
| | - Mingchang Li
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qianxue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, China
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25
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Fei W, Jiao W, Feng X, Chen X, Wang Y. Intermittent hypoxia mimicking obstructive sleep apnea aggravates early brain injury following ICH via neuroinflammation and apoptosis. Mol Med Rep 2021; 24:824. [PMID: 34558649 PMCID: PMC8485128 DOI: 10.3892/mmr.2021.12464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/21/2021] [Indexed: 02/06/2023] Open
Abstract
Spontaneous intracerebral hemorrhage (ICH) is a subtype of stroke associated with high mortality and morbidity due to the lack of effective therapy. Obstructive sleep apnea (OSA) has been reported to aggravate early brain injury (EBI) and worsen the overall outcome of patients with ICH. However, the precise role of OSA-mediated neuroinflammation and apoptosis following ICH has not been confirmed. The present study aimed to investigate the neuronal damage induced by OSA and the potential molecular mechanisms by which ICH-induced EBI regulates neural apoptosis in a C57BL/6 mouse ICH model. Mortality, neurological score, brain water content and neuronal death were evaluated by Evans blue extravasation, TUNEL staining, ELISA, analysis of reactive oxygen species/lipid peroxidation and western blotting. The results showed that OSA induction decreased survival rate, neurological score and neuron survival and upregulated the protein expression levels of Caspase-3, Bax, cytokines IL-1β, IL-6 and TNF-α and NF-κB, which indicated that OSA-mediated induction of apoptosis and neuroinflammation aggravated neuronal death following ICH. The molecular mechanism was partly dependent on the activating transcription factor/CHOP pathway. Taken together, the results demonstrated that OSA worsens neurological outcomes in mice and increases neuronal death by enhancing neural apoptosis and neuroinflammation.
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Affiliation(s)
- Wenjing Fei
- Department of Neurology, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu 214044, P.R. China
| | - Wei Jiao
- Department of Nursing, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu 214044, P.R. China
| | - Xiaoyan Feng
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu 214044, P.R. China
| | - Xufeng Chen
- Department of Gastroenterology, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu 214044, P.R. China
| | - Yuhai Wang
- Department of Neurology, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu 214044, P.R. China
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26
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Yang L, Wang Y, Zhang C, Cheng H. Perampanel, an AMPAR antagonist, alleviates experimental intracerebral hemorrhage‑induced brain injury via necroptosis and neuroinflammation. Mol Med Rep 2021; 24:544. [PMID: 34080030 PMCID: PMC8185517 DOI: 10.3892/mmr.2021.12183] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/11/2021] [Indexed: 12/21/2022] Open
Abstract
Spontaneous intracerebral hemorrhage (ICH) is a subtype of stroke with high mortality and morbidity due to the lack of effective therapies. The alpha‑amino‑3‑hydroxy‑5‑methyl‑4‑isoxazolepropionic acid receptor antagonist perampanel has been reported to alleviate early brain injury following subarachnoid hemorrhage and traumatic brain injury by reducing reactive oxygen species, apoptosis, autophagy, and necroptosis. Necroptosis is a caspase‑independent programmed cell death mechanism that serves a vital role in neuronal cell death following ICH. However, the precise role of necroptosis in perampanel‑mediated neuroprotection following ICH has not been confirmed. The present study aimed to investigate the neuroprotective effects and potential molecular mechanisms of perampanel in ICH‑induced early brain injury by regulating neural necroptosis in C57BL/6 mice and in a hemin‑induced neuron damage cell culture model. Mortality, neurological score, brain water content, and neuronal death were evaluated. The results demonstrated that perampanel treatment increased the survival rate and neurological score, and increased neuron survival. In addition, perampanel treatment downregulated the protein expression levels of receptor interacting serine/threonine kinase (RIP) 1, RIP3, and mixed lineage kinase domain like pseudokinase, and of the cytokines IL‑1β, IL‑6, TNF‑α, and NF‑κB. These results indicated that perampanel‑mediated inhibition of necroptosis and neuroinflammation ameliorated neuronal death in vitro and in vivo following ICH. The neuroprotective capacity of perampanel was partly dependent on the PTEN pathway. Taken together, the results of the present study demonstrated that perampanel improved neurological outcomes in mice and reduced neuronal death by protecting against neural necroptosis and neuroinflammation.
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Affiliation(s)
- Lixiang Yang
- Department of Neurosurgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
| | - Yue Wang
- Department of Neurosurgery, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu 214044, P.R. China
| | - Can Zhang
- Department of Neurosurgery, The Second People's Hospital of Hefei, Hefei, Anhui 230011, P.R. China
| | - Huilin Cheng
- Department of Neurosurgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, P.R. China
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27
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Feng X, Ma W, Zhu J, Jiao W, Wang Y. Dexmedetomidine alleviates early brain injury following traumatic brain injury by inhibiting autophagy and neuroinflammation through the ROS/Nrf2 signaling pathway. Mol Med Rep 2021; 24:661. [PMID: 34278508 PMCID: PMC8335733 DOI: 10.3892/mmr.2021.12300] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/29/2021] [Indexed: 12/25/2022] Open
Abstract
Traumatic brain injury (TBI) is a major public health problem and a major cause of mortality and disability that imposes a substantial economic burden worldwide. Dexmedetomidine (DEX), a highly selective α-2-adrenergic receptor agonist that functions as a sedative and analgesic with minimal respiratory depression, has been reported to alleviate early brain injury (EBI) following traumatic brain injury by reducing reactive oxygen species (ROS) production, apoptosis and autophagy. Autophagy is a programmed cell death mechanism that serves a vital role in neuronal cell death following TBI. However, the precise role of autophagy in DEX-mediated neuroprotection following TBI has not been confirmed. The present study aimed to investigate the neuroprotective effects and potential molecular mechanisms of DEX in TBI-induced EBI by regulating neural autophagy in a C57BL/6 mouse model. Mortality, the neurological score, brain water content, neuroinflammatory cytokine levels, ROS production, malondialdehyde levels and neuronal death were evaluated by TUNEL staining, Evans blue extravasation, ELISA, analysis of ROS/lipid peroxidation and western blotting. The results showed that DEX treatment markedly increased the survival rate and neurological score, increased neuron survival, decreased the expression of the LC3, Beclin-1 and NF-κB proteins, as well as the cytokines IL-1β, IL-6 and TNF-α, which indicated that DEX-mediated inhibition of autophagy and neuroinflammation ameliorated neuronal death following TBI. The neuroprotective capacity of DEX is partly dependent on the ROS/nuclear factor erythroid 2-related factor 2 signaling pathway. Taken together, the results of the present study indicated that DEX improves neurological outcomes in mice and reduces neuronal death by protecting against neural autophagy and neuroinflammation.
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Affiliation(s)
- Xiaoyan Feng
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Weiwei Ma
- Clinical Medicine Five‑Year Program, 11 Class, 2019 Grade, Wannan Medical College, Wuhu, Jiangsu 241002, P.R. China
| | - Jie Zhu
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Wei Jiao
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
| | - Yuhai Wang
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904th Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu 214044, P.R. China
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28
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Zhang C, Wang Y, Chen J, Yang S, Wang Y. Controlled decompression alleviates early brain injury in rabbit intracranial hypertension model by regulating apoptosis/necroptosis. Acta Cir Bras 2021; 36:e360406. [PMID: 34076083 PMCID: PMC8184258 DOI: 10.1590/acb360406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/10/2021] [Indexed: 11/24/2022] Open
Abstract
Purpose To evaluate the effects of controlled decompression and rapid decompression,
explore the potential mechanism, provide the theoretical basis for the
clinical application, and explore the new cell death method in intracranial
hypertension. Methods Acute intracranial hypertension was triggered in rabbits by epidural balloon
compression. New Zealand white rabbits were randomly put into the sham
group, the controlled decompression group, and the rapid decompression
group. Brain water content, etc., was used to evaluate early brain injury.
Western blotting and double immunofluorescence staining were used to detect
necroptosis and apoptosis. Results Brain edema, neurological dysfunction, and brain injury appeared after
traumatic brain injury (TBI). Compared with rapid decompression, brain water
content was significantly decreased, neurological scores were improved by
controlled decompression treatment. Terminal deoxynucleotidyl transferase
dUTP nick end labeling (TUNEL) staining and Nissl staining showed neuron
death decreased in the controlled decompression group. Compared with rapid
decompression, it was also found that apoptosis-related protein caspase-3/
tumor necrosis factor (TNF)-a was reduced markedly in the brain cortex and
serum, and the expression levels of necroptosis-related protein,
receptor-interacting protein 1 (RIP1)/receptor-interacting protein 1 (RIP3)
reduced significantly in the controlled decompression group. Conclusions Controlled decompression can effectively reduce neuronal damage and cerebral
edema after craniocerebral injury and, thus, protect the brain tissue by
alleviating necroptosis and apoptosis.
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Affiliation(s)
- Can Zhang
- Wuxi Medical College of Anhui Medical University, China
| | - Yue Wang
- Wuxi Medical College of Anhui Medical University, China
| | - Junhui Chen
- Wuxi Medical College of Anhui Medical University, China
| | - Shuo Yang
- Wuxi Medical College of Anhui Medical University, China
| | - Yuhai Wang
- Wuxi Medical College of Anhui Medical University, China
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29
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Xie L, Wang Y, Chen Z. Early Growth Response Protein 1 Knockdown Alleviates the Cerebral Injury in Rats with Intracerebral Hemorrhage (ICH) via STAT3/NF-κB Pathway by Reducing RXRα Acetylation Level. Neuroscience 2021; 487:120-130. [PMID: 33600884 DOI: 10.1016/j.neuroscience.2021.02.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 11/25/2022]
Abstract
Brain EGR1 (early growth response protein 1) overexpression aggravates focal ischemic brain injury, but its role in intracerebral hemorrhage (ICH) induced cerebral injury remains obscure. In this study, a rat ICH model was established by injecting type VII collagenase into the brain, and EGR1 knockdown reversed the increase of hematoma area, neurological function score, brain water content, blood-brain barrier (BBB) permeability, inflammation, p300 and retinoid a X receptor-α (RXRα) protein levels, as well as RXRα acetylation level induced by ICH. EGR1 expression was up-regulated in primary brain microvascular endothelial cells (BMECs), neurons, and astrocytes after ICH induction, and the up-regulation was most significant in BMECs. We also found that EGR1 promoted RXRα acetylation level by regulating p300 in BMECs. Subsequently, the BMECs were treated with OGD (oxygen glucose deprivation) plus hemin to simulate ICH condition. And silencing EGR1 rescued the upregulation of cell inflammation and the reduction of cell viability and TEER (transendothelial electric resistance) caused by OGD plus hemin via p300-mediated RXRα acetylation. Furthermore, the STAT3/NF-κB pathway was activated after treatment with OGD plus hemin, which was suppressed by silencing EGR1. And treatment with Stattic (an inhibitor of STAT3) restrained the effect of OGD plus hemin on NF-κB pathway activity, inflammation, cell viability and TEER. In conclusion, EGR1 increased RXRα acetylation level by regulating p300, thereby aggravating brain damage in ICH rat model and dysfunction in BMECs, which might through the STAT3/NF-κB pathway.
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Affiliation(s)
- Lijuan Xie
- Department of Vascular Surgery, China-Japan Friendship Hospital, Jilin University, China
| | - Yingying Wang
- Ward 4 of Neurology Department, China-Japan Friendship Hospital, Jilin University, China
| | - Zhuo Chen
- Ward 1 of Neurosurgery Department, China-Japan Friendship Hospital, Jilin University, China.
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30
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Wu H, Yu N, Wang X, Yang Y, Liang H. Tauroursodeoxycholic acid attenuates neuronal apoptosis via the TGR5/ SIRT3 pathway after subarachnoid hemorrhage in rats. Biol Res 2020; 53:56. [PMID: 33261652 PMCID: PMC7709410 DOI: 10.1186/s40659-020-00323-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/18/2020] [Indexed: 12/22/2022] Open
Abstract
Background Neuronal apoptosis plays a critical event in the pathogenesis of early brain injury after subarachnoid hemorrhage (SAH). This study investigated the roles of Tauroursodeoxycholic acid (TUDCA) in attenuate neuronal apoptosis and underlying mechanisms after SAH. Methods Sprague–Dawley rats were subjected to model of SAH and TUDCA was administered via the internal carotid injection. Small interfering RNA (siRNA) for TGR5 were administered through intracerebroventricular injection 48 h before SAH. Neurological scores, brain water content, Western blot, TUNEL staining and immunofluorescence staining were evaluated. Results TUDCA alleviated brain water content and improved neurological scores at 24 h and 72 h after SAH. TUDCA administration prevented the reduction of SIRT3 and BCL-2 expressions, as well as the increase of BAX and cleaved caspase-3.Endogenous TGR5 expression were upregulated after SAH and treatment with TGR5 siRNA exacerbated neurological outcomes after SAH and the protective effects of TUDCA at 24 h after SAH were also abolished by TGR5 siRNA. Conclusions Our findings demonstrate that TUDCA could attenuated neuronal apoptosis and improve neurological functions through TGR5/ SIRT3 signaling pathway after SAH. TUDCA may be an attractive candidate for anti-apoptosis treatment in SAH.
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Affiliation(s)
- Huihui Wu
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Nini Yu
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Xia Wang
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yina Yang
- Department of Neurology, Ninghai People's Hospital, Ninghai, 315600, China
| | - Hui Liang
- Department of Neurology, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, China.
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31
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Williams MJ, Cao H, Lindkvist T, Mothes TJ, Schiöth HB. Exposure to the environmental pollutant bisphenol A diglycidyl ether (BADGE) causes cell over-proliferation in Drosophila. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:25261-25270. [PMID: 32347502 PMCID: PMC7329772 DOI: 10.1007/s11356-020-08899-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/14/2020] [Indexed: 05/05/2023]
Abstract
Bisphenol A diglycidyl ether (BADGE), a derivative of bisphenol A (BPA), is widely used in the manufacture of epoxy resins as well as a coating on food containers. Recent studies have demonstrated the adverse effects of BADGE on reproduction and development in rodents and amphibians, but how BADGE affects biological activity is not understood. To gain a better understanding of the biological effects of BADGE exposure during development, we used the model organism Drosophila melanogaster and performed whole transcriptome sequencing. Interestingly, when Drosophila are raised on food containing BADGE, genes having significantly increased transcript numbers are enriched for those involved in regulating cell proliferation, including DNA replication and cell cycle control. Furthermore, raising larvae on BADGE-containing food induces hemocyte (blood cell) over-proliferation. This effect can be stimulated with even lower concentrations of BADGE if the hemocytes are already primed for cell proliferation by the expression of dominant active Ras GTPase. We conclude that chronic exposure to the xenobiotic BADGE throughout development can induce cell proliferation.
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Affiliation(s)
- Michael J Williams
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, 75 124, Uppsala, Sweden.
| | - Hao Cao
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, 75 124, Uppsala, Sweden
| | - Therese Lindkvist
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, 75 124, Uppsala, Sweden
| | - Tobias J Mothes
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, 75 124, Uppsala, Sweden
| | - Helgi B Schiöth
- Department of Neuroscience, Functional Pharmacology, Uppsala University, Husargatan 3, Box 593, 75 124, Uppsala, Sweden
- Institute for Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, Russia
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32
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Chen JH, Wu T, Xia WY, Shi ZH, Zhang CL, Chen L, Chen QX, Wang YH. An early neuroprotective effect of atorvastatin against subarachnoid hemorrhage. Neural Regen Res 2020; 15:1947-1954. [PMID: 32246644 PMCID: PMC7513987 DOI: 10.4103/1673-5374.280326] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Atorvastatin has been shown to reduce early brain edema and neuronal death after subarachnoid hemorrhage, but its mechanism is not clear. In this study, rat models of subarachnoid hemorrhage were established by autologous blood injection in the cisterna magna. Rat models were intragastrically administered 20 mg/kg atorvastatin 24 hours before subarachnoid hemorrhage, 12 and 36 hours after subarachnoid hemorrhage. Compared with the controls, atorvastatin treatment demonstrated that at 72 hours after subarachnoid hemorrhage, neurological function had clearly improved; brain edema was remarkably relieved; cell apoptosis was markedly reduced in the cerebral cortex of rats; the number of autophagy-related protein Beclin-1-positive cells and the expression levels of Beclin-1 and LC3 were increased compared with subarachnoid hemorrhage only. The ultrastructural damage of neurons in the temporal lobe was also noticeably alleviated. The similarities between the effects of atorvastatin and rapamycin were seen in all the measured outcomes of subarachnoid hemorrhage. However, these were contrary to the results of 3-methyladenine injection, which inhibits the signaling pathway of autophagy. These findings indicate that atorvastatin plays an early neuroprotective role in subarachnoid hemorrhage by activating autophagy. The experimental protocol was approved by the Animal Ethics Committee of Anhui Medical University, China (904 Hospital of Joint Logistic Support Force of PLA; approval No. YXLL-2017-09) on February 22, 2017.
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Affiliation(s)
- Jun-Hui Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei Province; Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
| | - Ting Wu
- Department of Cardiology, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
| | - Wen-Yuan Xia
- Department of Science and Education, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
| | - Zhong-Hua Shi
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
| | - Chun-Lei Zhang
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
| | - Lei Chen
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
| | - Qian-Xue Chen
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Yu-Hai Wang
- Department of Neurosurgery, Wuxi Clinical College of Anhui Medical University, 904 Hospital of Joint Logistic Support Force of PLA, Wuxi, Jiangsu Province, China
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Guan H, Zhang C, Chen T, Zhu J, Yang S, Shu L, Shen W, Wang Y. Controlled Decompression Attenuates Brain Injury in a Novel Rabbit Model of Acute Intracranial Hypertension. Med Sci Monit 2019; 25:9776-9785. [PMID: 31859264 PMCID: PMC6933874 DOI: 10.12659/msm.919796] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background In the past, standard rapid decompressive craniectomy was used to alleviate the secondary damage caused by high intracranial pressure. Recent clinical studies showed that controlled decompression may have a better curative effect than rapid decompression. However, the effect on controlled decompression in animals is unclear. Material/Methods Totally 80 healthy male New Zealand rabbits were randomly divided into a sham group (n=20), a rapid decompression group (n=30), and a controlled decompression group (n=30). An intracranial hypertension model was induced by injecting saline into an epidural balloon catheter and reducing ICP slowly and gradually by use of a pressure pump. The model was evaluated and analyzed by general observations, imaging examination, ICP values, behavioral score, brain water content, Nissl staining, and caspase-3 protein detection. Results The mortality rate was 36.7% (11/30) in the rapid group, 20% (6/30) in the controlled group, and 5% (1/20) in the sham group. The incidence of epidural hematoma in the controlled group was lower than in the rapid group (p<0.01). The ICP was significantly lower in the controlled group than in the rapid group (p<0.001), and the behavioral score in the rapid group was higher than in the controlled group (p<0.05). There was a marked difference in brain water content between the controlled group and the rapid group (p<0.01). Nissl staining demonstrated that the ratio of Nissl body in the controlled group was significantly higher than in the rapid group (p<0.01). WB detection showed the expression of Caspase-3 in the controlled group was lower than in the rapid group (p<0.05). Conclusions The results show the advantages of use of controlled decompression with intracranial hypertension. The animal model we developed provides a platform for further research on controlled decompression.
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Affiliation(s)
- Haoxiang Guan
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Can Zhang
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Tao Chen
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Jie Zhu
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Shuo Yang
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Longfei Shu
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Wei Shen
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
| | - Yuhai Wang
- Department of Neurosurgery, 904TH Hospital of People's Liberation Army (PLA), Wuxi Clinical College of Anhui Medical University, Wuxi, Jiangsu, China (mainland)
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Chen JL, Yuan DH, Yang SJ, Gu C, Zhou HS, Shao GF. Serum netrin-1 serves as a prognostic biomarker of aneurysmal subarachnoid hemorrhage. Clin Chim Acta 2019; 495:294-300. [DOI: 10.1016/j.cca.2019.04.080] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 04/25/2019] [Accepted: 04/26/2019] [Indexed: 11/29/2022]
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Chen J, Xuan Y, Chen Y, Wu T, Chen L, Guan H, Yang S, He J, Shi D, Wang Y. Netrin-1 alleviates subarachnoid haemorrhage-induced brain injury via the PPARγ/NF-KB signalling pathway. J Cell Mol Med 2019; 23:2256-2262. [PMID: 30614619 PMCID: PMC6378208 DOI: 10.1111/jcmm.14105] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 11/29/2018] [Indexed: 12/31/2022] Open
Abstract
Netrin‐1 (NTN‐1) is a novel drug to alleviate early brain injury following subarachnoid haemorrhage (SAH). However the molecular mechanism of NTN‐1‐mediated protection against early brain injury following SAH remains largely elusive. This study aims to evaluate the effects and mechanisms of NTN‐1 in protecting SAH‐induced early brain injury. The endovascular perforation SAH model was constructed using male C57BL/6J mice, and recombinant NTN‐1 was administrated intravenously. Mortality rates, SAH grade, brain water content, neurological score and neuronal apoptosis were evaluated. The expression of PPARγ, Bcl‐2, Bax and nuclear factor‐kappa B (NF‐κB) were detected by Western blot. Small interfering RNA specific to NTN‐1 receptor, UNC5B, and a selective PPARγ antagonist, bisphenol A diglycidyl ether (BADGE), were applied in combination with NTN‐1. The results suggested that NTN‐1 improved the neurological deficits, reduced the brain water content and alleviated neuronal apoptosis. In addition, NTN‐1 enhanced PPARγ and Bcl‐2 expression and decreased the levels of Bax and NF‐κB. However, the neuroprotection of NTN‐1 was abolished by UNC5B and BADGE. In conclusion, our results demonstrated that NTN‐1 attenuates early brain injury following SAH via the UNC5B PPARγ/NF‐κB signalling pathway.
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Affiliation(s)
- Junhui Chen
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Yong Xuan
- Department of Orthopedic, The Second People's Hospital of Hefei, Hefei City, Anhui Province, PR. China
| | - Yan Chen
- Department of Physical Examination Center, Hexian Peoples Hospital, Ma Anshan City, Anhui Province, PR. China
| | - Ting Wu
- Department of Cardiology, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Lei Chen
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Haoxiang Guan
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Shuo Yang
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Jianqing He
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Dongliang Shi
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
| | - Yuhai Wang
- Department of Neurosurgery, Wuxi Medical College of Anhui Medical University (l0lst Hospital of PLA), Wuxi City, Jiangsu Province, PR. China
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