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Fan H, Yang Y, Bai Q, Wang D, Shi X, Zhang L, Yang Y. Neuroprotective Effects of Sinomenine on Experimental Autoimmune Encephalomyelitis via Anti-Inflammatory and Nrf2-Dependent Anti-Oxidative Stress Activity. Neuromolecular Med 2023; 25:545-562. [PMID: 37735290 DOI: 10.1007/s12017-023-08756-z] [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: 04/11/2023] [Accepted: 08/24/2023] [Indexed: 09/23/2023]
Abstract
Multiple sclerosis (MS) is an autoimmune inflammatory disease of the central nervous system (CNS). Sinomenine (SIN), a bioactive alkaloid extracted from the Chinese medicinal plant Sinomenium acutum, has powerful anti-inflammatory and immunosuppressive therapeutic benefits. In our previous research, we found that SIN increased resistance to oxidative stress via the nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway in PC12 neuronal cells. However, whether SIN can improve the symptoms and pathological features of experimental autoimmune encephalomyelitis (EAE), a murine model of MS, via the Nrf2 signaling pathway remains unclear. EAE was immunized followed by SIN treatment. Then we evaluated the effects of SIN in EAE. Subsequently, primary microglia were cultured to explore the effect of SIN on microglia activation. Further, the levels of Nrf2 and its downstream molecules were detected to assess the molecular mechanisms of SIN. We demonstrated that SIN effectively ameliorated the severity of EAE, accompanied by a reduction in the demyelination, axonal damage and inhibition of inflammatory cell infiltration. Mechanistically, SIN decreased the inflammatory cytokines expression, and suppressed microglia and astrocytes activation in EAE mice. Furthermore, SIN suppressed lipopolysaccharide (LPS)-induced microglial activation and the production of pro-inflammatory factors in vitro. Moreover, SIN inhibited oxidative stress via the activation of the Nrf2 signaling pathway. Our work proves that SIN exerts its neuroprotective effects by the Nrf2-dependent anti-oxidative stress and diminishing neuroinflammation, suggesting that the "antioxiflammation" effect of SIN is expected to be an ideal treatment strategy for MS/EAE.
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Affiliation(s)
- Hua Fan
- Office of Research & Innovation, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471003, China.
| | - Yang Yang
- Office of Research & Innovation, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471003, China
| | - Qianqian Bai
- Office of Research & Innovation, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471003, China
| | - Dongmei Wang
- School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, 471003, China
| | - Xiaofei Shi
- Department of Rheumatology and Immunology, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471003, China
| | - Lele Zhang
- Department of traditional Chinese medicine, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471003, China
| | - Yanhui Yang
- Department of Trauma center, The First Affiliated Hospital, College of Clinical Medicine , Henan University of Science and Technology, Luoyang, 471003, China.
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Guo R, Gao S, Feng Y, Mao C, Sheng W. Ulinastatin attenuates spinal cord injury by targeting AMPK/NLRP3 signaling pathway. J Chem Neuroanat 2022; 125:102145. [PMID: 35998795 DOI: 10.1016/j.jchemneu.2022.102145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 10/31/2022]
Abstract
The AMPK and NLRP3 inflammasome signaling pathways are reported to participant in the inflammatory responses following spinal cord injury (SCI). Ulinastatin (ULI) is a urinary trypsin inhibitor with excellent anti-inflammatory effects, but the functions of ULI on SCI are rarely reported. Hence, this study was designed to investigate whether ULI could modulate SCI through regulating the AMPK/NLRP3 signaling pathway. Cell Counting Kit-8 (CCK-8) assays were used to investigate whether ULI had cytotoxic effects on BV-2 cells. Basso-Beattie-Bresnahan (BBB) scale, spinal cord water content detection, hematoxylin-eosin (HE) and Nissl stainings were used to investigate the protective effects of ULI on rat SCI. The expressions of inflammatory cytokines were detected by ELISA and RT-qPCR. The expressions of key proteins of AMPK and NLRP3 inflammasome were analyzed by western blot. The CCK-8 assays indicated that ULI did not significantly influence the viability of BV-2 cells at various concentrations below 10,000 U/ml. It was witnessed that ULI could dramatically inhibit the activation of NLRP3 inflammasome via activating the AMPK signaling pathway, thus relieving inflammatory responses. Besides, the in vivo experiment suggested that treatment with ULI remarkably relieve spinal cord edema, ameliorated spinal cord tissue architecture, and improved neurological function following SCI. The findings indicate that ULI significantly ameliorates neurological function following SCI by regulating the AMPK/NLRP3 inflammasome signaling pathway.
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Affiliation(s)
- Rui Guo
- Department of Spine Surgery, Xinjiang Medical University Affiliated First Hospital, Urumqi, Xinjiang 830054, China.
| | - Shutao Gao
- Department of Spine Surgery, Xinjiang Medical University Affiliated First Hospital, Urumqi, Xinjiang 830054, China.
| | - Ying Feng
- College of Public Health, Xinjiang Medical University, China.
| | - Chao Mao
- Department of Spine Surgery, Xinjiang Medical University Affiliated First Hospital, Urumqi, Xinjiang 830054, China.
| | - Weibin Sheng
- Department of Spine Surgery, Xinjiang Medical University Affiliated First Hospital, Urumqi, Xinjiang 830054, China.
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Yuan ZL, Zhang ZX, Mo YZ, Li DL, Xie L, Chen MH. Inhibition of extracellular signal-regulated kinase downregulates endoplasmic reticulum stress-induced apoptosis and decreases brain injury in a cardiac arrest rat model. Physiol Res 2022; 71:413-423. [PMID: 35616042 DOI: 10.33549/physiolres.934882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Cerebral ischemia-reperfusion injury (CIRI) is the predominant cause of neurological disability after cardiac arrest/cardiopulmonary resuscitation (CA/CPR). The endoplasmic reticulum stress (ERs)-induced apoptosis plays an important role in neuronal survival/death in CIRI. Our previous studies reported that the extracellular signal-regulated kinase (ERK) inhibitor, PD98059, alleviates CIRI after CA/CPR. Whether ERs-induced apoptosis is involved in the neuroprotection of PD98059 remains unknown. This study aims to investigate the effects of ERK inhibition by PD98059 on ERs-induced apoptosis after CIRI in the CA/CPR rat model. The baseline characteristics of male adult Sprague-Dawley (SD) rats in all groups were evaluated before CA/CPR. The SD rats that survived from CA/CPR were randomly divided into 3 groups (n=12/group): normal saline group (1 ml/kg), dimethylsulfoxide (DMSO, the solvent of PD98059, 1 ml/kg) group, PD98059 group (0.3 mg/kg). Another 12 SD rats were randomly selected as the Sham group. Twenty-four hours after resuscitation, neural injury was assessed by survival rate, neurological deficit scores (NDS) and Nissl staining; apoptosis of brain cells was detected using terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) staining; mRNA expression and protein levels of ERs-related protein BIP, PERK, ATF4 and CHOP were checked with RT-PCR and Western Blot. The results showed that there were no significant differences in baseline characteristics before CA/CPR among all groups. PD98059 significantly improved survival rate and NDS, increased the Nissl bodies in neurons, reduced apoptosis, downregulated the mRNA transcription and expression levels of BIP, PERK, ATF4 and CHOP at 24 h after CA/CPR. Our results demonstrate that inhibition of ERK by PD98059 alleviates ERs-induced apoptosis via BIP-PERK-ATF4-CHOP signaling pathway and mitigates CIRI in the CA/CPR rat model.
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Affiliation(s)
- Z-L Yuan
- Department of Emergency Medicine, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, People's Republic of China; Intensive Care Unit, The Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi People's Republic of China. ; Department of Physiology, Guangxi Medical University, Nanning, Guangxi, People's Republic of China.
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Dai LA, Chen XY, Li WJ, Yang JH, Lin MJ, Li XS, Zeng YF, Chen SW, Xie ZL, Zhu ZL, Li XJ, Huang HS. Sigma-1 Receptor and Binding Immunoglobulin Protein Interact with Ulinastatin Contributing to a Protective Effect in Rat Cerebral Ischemia/Reperfusion. World Neurosurg 2022; 158:e488-e494. [PMID: 34767993 DOI: 10.1016/j.wneu.2021.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 11/01/2021] [Accepted: 11/02/2021] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To investigate impact of ulinastatin (UTI) on sigma-1 receptor (σ1R) and binding immunoglobulin protein (BiP) after cerebral ischemia/reperfusion injury. METHODS The middle cerebral artery occlusion (MCAO) model was used to induce cerebral ischemia/reperfusion injury. Eighty male Sprague Dawley rats were randomly divided into 6 groups: control, MCAO, MCAO+50,000 U/kg UTI, MCAO+100,000 U/kg UTI, MCAO+200,000 U/kg UTI, MCAO+300,000 U/kg UTI. At 24 and 48 hours after MCAO, infarct volume, neurological dysfunction, and grip strength test were measured, and level of σ1R and BiP proteins was further detected using Western blot. Molecular docking assays were carried out to verify interaction between σ1R, BiP, and UTI. The serum concentration of BiP and the binding assay between σ1R, BiP, and UTI were determined using enzyme-linked immunosorbent assay. RESULTS UTI increased the modified neurological severity score and upregulated σ1R and BiP expression in the cerebral cortex after MCAO. The grip strength of forelimbs increased significantly in the MCAO+200,000 U/kg UTI and MCAO+300,000 U/kg UTI groups compared with the MCAO group, while BiP serum levels remained unchanged. The molecular docking assay indicated putative binding between σ1R, BiP, and UTI. The binding assay also revealed that both σ1R and BiP could be combined with UTI. CONCLUSIONS UTI displays a neuroprotective effect via upregulation of σ1R and BiP during ischemia/reperfusion injury, suggesting that UTI modulates σ1R and BiP and their interaction may provide a novel insight into potential therapeutic mechanisms for stroke.
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Affiliation(s)
- Ling-Ao Dai
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Xiao-Yin Chen
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Wen-Jing Li
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Jia-Hao Yang
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Ming-Jie Lin
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Xiao-Shan Li
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Yu-Fu Zeng
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Shu-Wen Chen
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Zhu-Liang Xie
- Department of Anesthesiology, Second Clinical College of Guangzhou Medical University, Guangzhou, China
| | - Zhuo-Li Zhu
- Department of Anesthesiology, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiong-Juan Li
- Department of Anesthesiology, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Huan-Sen Huang
- Department of Anesthesiology, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
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Effect of Ulinastatin Combined with Xingnaojing Injection on Severe Traumatic Craniocerebral Injury and Its Influence on Oxidative Stress Response and Inflammatory Response. BIOMED RESEARCH INTERNATIONAL 2022; 2022:2621732. [PMID: 35047630 PMCID: PMC8763492 DOI: 10.1155/2022/2621732] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/27/2021] [Indexed: 11/18/2022]
Abstract
Objective This study is aimed at exploring the effect of ulinastatin combined with Xingnaojing injection on severe traumatic craniocerebral injury and its influence on oxidative stress response and inflammatory response in patients. Methods A total of 100 patients with severe traumatic craniocerebral injury admitted to our hospital from January 2018 to January 2020 were selected and equally assigned into a study group (50 cases) and a control group (50 cases) according to a random sampling method. Patients in study group received treatment of ulinastatin combined with Xingnaojing injection, while those in control group were treated with ulinastatin only. The study compared the two groups on the oxidative stress response, inflammatory response, the therapeutic effect, and the incidence rate of adverse reactions. Results It is observed that patients in study group obtained lower levels of free cortisol (FC) and norepinephrine (NE) in the serum and higher level of total thyroxine (TT4) after treatment compared with those in control group with significant difference (P < 0.05); in the meantime, they were examined to have significantly fewer oxidative stress response products, lower serum inflammatory factor level, and serum indicator levels of craniocerebral injury as opposed to those in control group, suggesting significant differences (P < 0.05); study group demonstrated higher treatment response rate and lower incidence rate of adverse reactions compared with control group with a significant difference (P < 0.05). Conclusion The study found that ulinastatin combined with Xingnaojing infection has a significant effect in the treatment of severe traumatic craniocerebral injury, which can reduce the degree of craniocerebral injury and the level of inflammatory factors in the serum of patients. It is worthy of being promoted and applied clinically.
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Lin H, Zhang X, Liu J, Yuan L, Liu J, Wang C, Sun J, Chen J, Jing S, Li H. Schisantherin A improves learning and memory abilities partly through regulating the Nrf2/Keap1/ARE signaling pathway in chronic fatigue mice. Exp Ther Med 2021; 21:385. [PMID: 33680107 PMCID: PMC7918174 DOI: 10.3892/etm.2021.9816] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 07/31/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic fatigue is frequently accompanied by decreased learning and memory capabilities. Schizantherin A (SCA) is one of the main active monomer components in Schisandra chinensis lignans. In the present study, a chronic fatigue mouse model was established using the exhausted swimming approach to investigate the effects of SCA on learning and memory and its associated mechanism of action. Learning and memory abilities were tested by step through tests and water maze methods. Levels of superoxide dismutase (SOD), catalase (CAT), glutathione (GSH) and malondialdehyde (MDA) in hippocampal tissue were measured by corresponding assays. The effect of SCA on the expression of kelch-like ECH-associated protein 1 (Keap1), nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1), Bcl2, Bax and cleaved caspase-3 were determined by western blot. The present results showed that SCA can improve the learning and memory capabilities of chronic fatigue mice. SCA was found to increase the activities of SOD and CAT in addition to increasing the levels of GSH but reduced the levels of MDA in hippocampus tissues. Furthermore, SCA treatment downregulated the protein expression levels of Keap1, Bax and cleaved caspase-3 and upregulated the protein expression levels of Nrf2, HO1 and Bcl2 in the hippocampus. These results suggested that modulations in the Nrf2-Keap1-antioxidant response element pathway, anti-oxidative and anti-apoptosis effects are the causes underlying the improvements from SCA treatment on the learning and memory abilities of chronic fatigue mice.
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Affiliation(s)
- Huijiao Lin
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Xinyun Zhang
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Jiawei Liu
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Liwei Yuan
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Jiale Liu
- Neurology Department, Jilin City Central Hospital, Jilin, Jilin 132011, P.R. China
| | - Chunmei Wang
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Jinghui Sun
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Jianguang Chen
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
| | - Shu Jing
- General Surgery Department, Affiliated Hospital of Beihua University, Jilin, Jilin 132011, P.R. China
| | - He Li
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, Jilin 132013, P.R. China
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Obeticholic acid ameliorates hepatorenal syndrome in ascitic cirrhotic rats by down-regulating the renal 8-iso-PGF2α-activated COX-TXA2 pathway. Clin Sci (Lond) 2020; 134:2055-2073. [PMID: 32725149 DOI: 10.1042/cs20200452] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUNDS/AIMS The present study explores the potential of chronic treatment with the Foresaid X receptor (FXR) agonist obeticholic acid (OCA), which inhibits oxidative stress-related pathogenesis, in ascitic cirrhotic rats with hepatorenal syndrome (HRS) developed 6 weeks after bile duct ligation (BDL). METHODS Systemic, splanchnic, and renal hemodynamics and pathogenic cascades were measured in ascitic BDL and sham rats receiving 2-weeks of either vehicle or OCA treatments (sham-OCA and BDL-OCA groups), and NRK-52E cells, rat kidney tubular epithelial cells. RESULTS Chronic OCA treatment significantly normalized portal hypertension, glomerular filtration rate, urine output, renal blood flow; decreased ascites, renal vascular resistance, serum creatinine, and the release of renal tubular damage markers, including urinary neutrophil gelatinase-associated lipocalin (uNGAL) and kidney injury moleculae-1 (uKim-1) in BDL-OCA rats. In the BDL group, inhibition of the renal oxidative stress (8-iso-PGF2α)-activated cyclooxygenase-thromboxane A2 [COX-TXA2] pathway, apoptosis, and tubular injury accompanied by a decrease in hyper-responsiveness to the vasoconstrictor 8-iso-PGF2α in perfused kidneys. In vitro experiments revealed that 8-iso-PGF2α induced oxidative stress, release of reactive oxygen species, and cell apoptosis, which were reversed by concomitant incubation with the FXR agonist. CONCLUSIONS Through the inhibition of renal 8-iso-PGF2α production and the down-regulation of the COX-TXA2 pathway, our study suggests that chronic OCA treatment can ameliorate the HRS in ascitic cirrhotic rats. Thus, OCA is an agent with antioxidative stress, antivasoconstrictive, antiapoptotic properties which benefit ascitic, cirrhotic rats with systemic, hepatic, and renal abnormalities.
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Cui L, Cao W, Xia Y, Li X. Ulinastatin alleviates cerebral ischemia-reperfusion injury in rats by activating the Nrf-2/HO-1 signaling pathway. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1136. [PMID: 33240985 PMCID: PMC7576027 DOI: 10.21037/atm-20-5115] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Ulinastatin, a urinary trypsin inhibitor, is one of the widely used auxiliary drugs in the rescue of acute circulatory failure. This study aims to explore the protective mechanisms of ulinastatin on cerebral ischemia-reperfusion (I/R) injury. Methods A cerebral MCAO was established with middle cerebral artery occlusion (MCAO) in Sprague Dawley (SD) rats. Western blotting was employed to show protein expression. Oxidative stress markers [reactive oxygen species (ROS), superoxide dismutase (SOD), malondialdehyde (MDA), and glutathione (GSH)] and inflammatory cytokines (IL-6, IL-1β, and IL-18) were analyzed to show oxidative stress and inflammation. Hematoxylin and eosin (HE) and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) and triphenyltetrazolium chloride (TTC) staining were applied to show brain injury. Results HE, TUNEL and TTC staining indicated that ulinastatin significantly ameliorated cerebral I/R injury and reduced apoptotic cells in the MCAO brain tissue. Ulinastatin also reduced the MCAO-induced expression of intercellular adhesion molecule 1(ICAM-1)/caspase-3. Additionally, the highly expressed ROS, MDA and inflammatory cytokines (IL-6, IL-1β and IL-18) were significantly suppressed, and the inhibited SOD and GSH were recovered with ulinastatin treatment. Consequently, the expression of nuclear factor erythroid-2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) (which was significantly inhibited by MCAO) was re-activated by ulinastatin and/or TBHQ (an Nrf-2 activator), and treatment with ML-385 (an Nrf-2 inhibitor) blocked the inhibition of apoptosis, inflammation, and oxidative stress by ulinastatin. Our results indicate that the Nrf-2/HO-1 signaling pathway may be involved in the pharmacological mechanism of ulinastatin in cerebral I/R injury. Conclusions Ulinastatin protected against inflammation and oxidative stress in cerebral I/R injuries via activation of the Nrf-2/HO-1 signaling pathway.
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Affiliation(s)
- Lei Cui
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, China
| | - Wei Cao
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, China
| | - Yanmin Xia
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, China
| | - Xiaofang Li
- Department of Neurology, Affiliated Hospital of Hebei University, Baoding, China
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Kadri S, El Ayed M, Limam F, Aouani E, Mokni M. Preventive and curative effects of grape seed powder on stroke using in vitro and in vivo models of cerebral ischemia/reperfusion. Biomed Pharmacother 2020; 125:109990. [PMID: 32070874 DOI: 10.1016/j.biopha.2020.109990] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/15/2020] [Accepted: 01/31/2020] [Indexed: 12/20/2022] Open
Abstract
Stroke is a worldwide concern. Many studies pointed out relevant preventive effect of grape seed powder (GSP) against deleterious brain ischemia/reperfusion (I/R) injury, but curative effect has been scarcely approached. The present work aimed at studying the preventive and curative effect of GSP against stroke using in-vitro and in-vivo models. Primary neuron-astrocyte cocultures were used to evaluate in-vitro GSP protective and curative effect on oxygen-glucose-deprivation (OGD). A murine I/R model, in which GSP was administered as delayed post stroke drug, to evaluate its potential clinically translatable therapy was used and behavioral tests were conducted after 15 days. Ultra-structure of hippocampus dentate gyrus using Transmission Electron Microscopy (TEM) was also undertaken. GSP prevented OGD-induced toxicity and cell death in a dose dependent manner and was neuroprotective as assessed by sustained cell viability (70 % ±1 for OGD + GSP and 37 % ±2 for OGD) and modulated cytokines and brain derived neurotrophic factor (BDNF) expression. GSP also promoted behavioral outcomes by increasing step-down inhibitory time from 17s±4 to 50s±11 and rat overall activities by improving scores in open field test to near control level. Furthermore, GSP protected hippocampus dentate gyrus area from I/R-induced drastic alterations as assessed by reduced autophagic vacuoles.
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Affiliation(s)
- Safwen Kadri
- Bioactive Substances Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050, Hammam-Lif, Tunisia.
| | - Mohamed El Ayed
- Bioactive Substances Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Ferid Limam
- Bioactive Substances Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Ezzedine Aouani
- Bioactive Substances Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050, Hammam-Lif, Tunisia
| | - Meherzia Mokni
- Bioactive Substances Laboratory, Biotechnology Centre, Technopolis Borj-Cedria, BP-901, 2050, Hammam-Lif, Tunisia
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Michaličková D, Šíma M, Slanař O. New insights in the mechanisms of impaired redox signaling and its interplay with inflammation and immunity in multiple sclerosis. Physiol Res 2020; 69:1-19. [PMID: 31852206 DOI: 10.33549/physiolres.934276] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Multiple sclerosis (MS) is an autoimmune neurological disease characterized by chronic inflammation of the central nervous system (CNS), leading to demyelination and axonal damage and resulting in a range of physical, mental or even psychiatric symptoms. Key role of oxidative stress (OS) in the pathogenesis of MS has been suggested, as indicated by the biochemical analysis of cerebrospinal fluid and blood samples, tissue homogenates, and animal models of multiple sclerosis. OS causes demyelination and neurodegeneration directly, by oxidation of lipids, proteins and DNA but also indirectly, by inducing a dysregulation of the immunity and favoring the state of pro-inflammatory response. In this review, we discuss the interrelated mechanisms of the impaired redox signaling, of which the most important are inflammation-induced production of free radicals by activated immune cells and growth factors, release of iron from myelin sheath during demyelination and mitochondrial dysfunction and consequent energy failure and impaired oxidative phosphorylation. Review also provides an overview of the interplay between inflammation, immunity and OS in MS. Finally, this review also points out new potential targets in MS regarding attenuation of OS and inflammatory response in MS.
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Affiliation(s)
- D Michaličková
- Institute of Pharmacology, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic.
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Ma C, Han DF, Jin H, Cheng YY, Hu HX, Wang X. A Combination of Ulinastatin and Xuebijing Amplifies Neuroprotection after Transient Cerebral Ischemia via Attenuating Apoptosis Signal Pathways in Hippocampus. Curr Pharm Des 2019; 24:5342-5347. [PMID: 30727870 DOI: 10.2174/1381612825666190206224134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 01/30/2019] [Indexed: 12/30/2022]
Abstract
BACKGROUND Ulinastatin (UTI) plays the beneficial roles in modifying cerebral ischemic injury evoked by cardiac arrest (CA). XueBiJing (XBJ), comprised of extracts from Chinese herbals, has been used for the treatment of sepsis and ischemic disorders linked to multiple organ dysfunction syndromes. The current study was to find interventions that can enhance effectiveness of these drugs and further to provide a fundamental for their rational application in clinical practice. Thus, we examined how apoptosis signal in the hippocampus is engaged in a facilitating role of UTI and XBJ in improving neural injury and neurological functions after transient cerebral ischemia. METHODS CA was induced by asphyxia followed by cardiopulmonary resuscitation in rats. Western Blot analysis and ELISA were employed to determine the protein expression of Caspase-3 and Caspase-9 in the hippocampus; and representative apoptosis pathways. The modified neurological severity score (mNSS) and spatial working memory performance were used to assess neurological deficiencies in CA rats. RESULTS CA increased Caspase-3 and Caspase-9 in the hippocampus CA1 region. A lower dose of UTI did not attenuate upregulation of apoptosis signal pathways evoked by CA. However, a systemic administration of XBJ significantly amplified the inhibitory effects of the lower dose of UTI on apoptosis signal of the hippocampus. In addition, a combination of UTI and XBJ improved mNSS and spatial working memory performance to a greater degree. CONCLUSIONS Our data indicate that a combination of XBJ and UTI plays a facilitating role in improving neuronal injury and neurological deficits observed in transient cerebral ischemia; and an inhibition of apoptosis signal pathways is involved in neuroprotective effects of united XBJ and UTI.
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Affiliation(s)
- Chi Ma
- Department of Neurosurgery, First Hospital of Jilin University, Jilin, China
| | - Dong-Feng Han
- Department of Emergency Medicine, First Hospital of Jilin University, Jilin, China
| | - Hang Jin
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Jilin, China
| | - Ying-Ying Cheng
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Jilin, China
| | - Hai-Xia Hu
- Department of Emergency Medicine, First Hospital of Jilin University, Jilin, China
| | - Xu Wang
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Jilin, China
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Zhang FJ, Song HQ, Li XM. Effect of ulinastatin combined with mild therapeutic hypothermia on intestinal barrier dysfunction following cardiopulmonary resuscitation in rats. Exp Ther Med 2019; 18:3861-3868. [PMID: 31616513 PMCID: PMC6781809 DOI: 10.3892/etm.2019.8039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 08/21/2019] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to investigate the effect of ulinastatin (UTI) alone or combined with mild therapeutic hypothermia (MTH) on intestinal barrier dysfunction following cardiopulmonary resuscitation (CPR) in rats. A total of 25 adult male Sprague-Dawley rats were randomly organized into five groups: Sham; control; UTI; MTH; and the combined group. The latter four groups were induced with the asphyxiated cardiac arrest rat model and treated with different interventions. After 6 h of treatment, the intestinal tissues of the rats were examined by electron microscopy, and the levels of intestinal malondialdehyde (MDA) and superoxide dismutase (SOD) were determined. The results of the present study indicated that the target temperature had successfully been attained in MTH and the combined group, and the other three groups of rats all survived at a normal temperature. In the rats treated with UTI or MTH, the epithelial cells exhibited pathological changes in their tight junctions and epithelial cell surface microvilli compared with the sham group. In the rats treated with a combination of UTI and MTH, whilst the epithelial cells exhibited a few slight changes, including mitochondrial edema, they were largely similar to the normal epithelial cells. However, there were significant differences in the levels of MDA and SOD between the different treatment groups. UTI combined with MTH may serve a protective role by suppressing oxidative stress in the small intestinal mucosa following CPR in rats compared with either UTI or MTH treatment alone.
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Affiliation(s)
- Fang-Jie Zhang
- Department of Emergency Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
| | - Hua-Qiang Song
- Department of Emergency Medicine, The First People's Hospital of Changde City, Changde, Hunan 415000, P.R. China
| | - Xiang-Min Li
- Department of Emergency Medicine, Xiangya Hospital of Central South University, Changsha, Hunan 410008, P.R. China
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