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Tientcheu JPD, Ngueguim FT, Gounoue RK, Mbock MA, Ngapout R, Kandeda AK, Dimo T. The extract of Sclerocarya birrea, Nauclea latifolia, and Piper longum mixture ameliorates diabetes-associated cognitive dysfunction. Metab Brain Dis 2023; 38:2773-2796. [PMID: 37821784 DOI: 10.1007/s11011-023-01291-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 09/06/2023] [Indexed: 10/13/2023]
Abstract
Diabetes-associated cognitive dysfunction is linked to chronic hyperglycemia, oxidative stress, inflammation, cholinergic dysfunction, and neuronal degeneration. We investigated the antidiabetic and neuroprotective activity of a mixture of Sclerocarya birrea, Nauclea latifolia, and Piper longum (SNP) in type 2 diabetic (T2D) rat model-induced memory impairment. Fructose (10%) and streptozotocin (35 mg/kg) were used to induce T2D in male Wistar rats. Diabetic animals received distilled water, metformin (200 mg/kg), or SNP mixture (75, 150, or 300 mg/kg). HPLC-MS profiling of the mixture was performed. Behavioral testing was conducted using the Y-maze, NORT, and Morris water mazes to assess learning and memory. Biochemical markers were evaluated, including carbohydrate metabolism, oxidative/nitrative stress, pro-inflammatory markers, and acetylcholinesterase activity. Histopathological examination of the pancreas and hippocampus was also performed. Fructose/STZ administration resulted in T2D, impaired short- and long-term memory, significantly increased oxidative/nitrative stress, pro-inflammatory cytokine levels, acetylcholinesterase activity (AChE), hippocampal neuronal loss and degeneration in CA1 and CA3 subfields, and neuronal vacuolation in DG. SNP mixture at 150 and 300 mg/kg significantly improved blood glucose and memory function in diabetic rats. The mixture reduced oxidative/nitrative stress and increased endogenous antioxidant levels. It also reduced serum IL-1β, INF-γ and TNF-α levels and ameliorated AChE activity. Histologically, SNP protected hippocampus neurons against T2D-induced neuronal necrosis and degeneration. We conclude that the aqueous extract of SNP mixture has antidiabetic and neuroprotective activities thanks to active metabolites identified in the plant mixture, which consequently normalized blood glucose, protected hippocampus neurons, and improved memory function in diabetic rats.
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Affiliation(s)
| | - Florence Tsofack Ngueguim
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon.
| | - Racéline Kamkumo Gounoue
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Michel Arnaud Mbock
- Department of Biochemistry, Laboratory of Biochemistry, Faculty of Science, University of Douala, PO Box 24 157, Douala, Cameroon
| | - Rodrigue Ngapout
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Antoine Kavaye Kandeda
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
| | - Théophile Dimo
- Laboratory of Animal Physiology, Faculty of Science, University of Yaoundé 1, P.O. Box 812, Yaoundé, Cameroon
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Roles of Nitric Oxide in Brain Ischemia and Reperfusion. Int J Mol Sci 2022; 23:ijms23084243. [PMID: 35457061 PMCID: PMC9028809 DOI: 10.3390/ijms23084243] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/08/2022] [Accepted: 04/08/2022] [Indexed: 01/27/2023] Open
Abstract
Brain ischemia and reperfusion (I/R) is one of the most severe clinical manifestations of ischemic stroke, placing a significant burden on both individuals and society. The only FDA-approved clinical treatment for ischemic stroke is tissue plasminogen activator (t-PA), which rapidly restores cerebral blood flow but can have severe side effects. The complex pathological process of brain I/R has been well-established in the past few years, including energy metabolism disorders, cellular acidosis, doubling of the synthesis or release of excitotoxic amino acids, intracellular calcium homeostasis, free radical production, and activation of apoptotic genes. Recently, accumulating evidence has shown that NO may be strongly related to brain I/R and involved in complex pathological processes. This review focuses on the role of endogenous NO in pathological processes in brain I/R, including neuronal cell death and blood brain barrier disruption, to explore how NO impacts specific signaling cascades and contributes to brain I/R injury. Moreover, NO can rapidly react with superoxide to produce peroxynitrite, which may also mediate brain I/R injury, which is discussed here. Finally, we reveal several therapeutic approaches strongly associated with NO and discuss their potential as a clinical treatment for ischemic stroke.
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Ba M, Ding W, Guan L, Lv Y, Kong M. S-nitrosylation of Src by NR2B-nNOS signal causes Src activation and NR2B tyrosine phosphorylation in levodopa-induced dyskinetic rat model. Hum Exp Toxicol 2018; 38:303-310. [PMID: 30350722 DOI: 10.1177/0960327118806633] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Abnormality in Src PSD-95 NR2B signaling complex assemble occurs in levodopa-induced dyskinesia (LID). N-methyl-D-aspartate receptor (NMDAR) subunit NR2B tyrosine phosphorylation mediated by Src family protein tyrosine kinases is closely associated with dyskinesia. Src autophosphorylation (p-Src) is an important part of Src-catalyzed phosphorylation of NR2B. In addition, the neuronal nitric oxide synthase (nNOS)-derived NO (nNOS/NO) signal which was also involved in dyskinesia recently was proved to participate in the regulation of Src function. Yet, the detailed signal mechanism about the interactions of NR2B, nNOS, and Src is still unknown. In the present study, we investigated the influences of nNOS on Src activation and NR2B tyrosine phosphorylation in dyskinetic rat model by immunoblotting and immunoprecipitation. The results demonstrated that chronic levodopa treatment resulted in downregulation of p-nNOS-S847, one marker of nNOS overactivation. Coinstantaneously, the S-nitrosylation (SNO-Src) and autophosphorylation (p-Src) of Src and NR2B tyrosine phosphorylation were upregulated in dyskinetic rat model. Conversely, administration of 7-NI, one nNOS inhibitor, reversed all these effects of levodopa treatment. Besides, NR2B-containing NMDAR (NR2B/NMDAR) antagonist CP-101,606 could upregulate p-nNOS-S847 and thus attenuate nNOS activation and simultaneously reduce the SNO-Src, p-Src, and NR2B tyrosine phosphorylation. Taken together, the S-nitrosylation of Src is caused by nNOS/NO signal, which is overactivated via Ca2+ influx dependent on NR2B/NMDAR, and subsequently facilitates Src auto-tyrosine phosphorylation and further phosphorylates NR2B. The "NR2B/NMDAR-nNOS/NO-SNO-Src-p-Src-NR2B/NMDAR" signaling cycle may be the molecular basis of NR2B tyrosine phosphorylation upward positive feedback, which demonstrates the possibility as one latent target for dyskinesia therapy.
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Affiliation(s)
- M Ba
- 1 Department of Neurology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Shandong, China
| | - W Ding
- 2 Department of Health, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Shandong, China
| | - L Guan
- 1 Department of Neurology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Shandong, China
| | - Y Lv
- 1 Department of Neurology, the Affiliated Yantai Yuhuangding Hospital of Qingdao University, Shandong, China
| | - M Kong
- 3 Department of Neurology, Yantaishan Hospital, Yantai City, Shandong, China
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Xu N, Fan W, Zhou X, Liu Y, Ma P, Qi S, Gu B. Probiotics decrease depressive behaviors induced by constipation via activating the AKT signaling pathway. Metab Brain Dis 2018; 33:1625-1633. [PMID: 29948655 DOI: 10.1007/s11011-018-0269-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 06/07/2018] [Indexed: 12/18/2022]
Abstract
Chronic constipation is often accompanied by emotional disorders such as depression and anxiety. The aim of this study was to determine whether administration of a multispecies probiotic can decrease depressive behaviors through the gut-brain axis and identify any underlying mechanisms. A mouse model of constipation induced by loperamide (5 mg·kg-1,i.p.) was used. For that purpose, 36 ICR male mice were divided into three groups: control, constipation and probiotic groups. The probiotic group received treatment with a probiotic once per day for 14 days via a gavage. All other groups were given an equal volume of normal saline. The fecal parameters and intestinal transit ratio were recorded. The forced swimming test and tail suspension test were used to detect changes in depressive behaviors. Total superoxide dismutase (T-SOD) activity and malondialdehyde (MDA) levels were measured by assay kits. We also detected neuronal survival, as well as phosphorylated Ser/Thr protein kinase (p-AKT), Bcl-2, Bcl-2 associated X protein (Bax) and cleaved caspase-3 levels in the hippocampus. The results showed that administration of a probiotic could ameliorate depressive behaviors and relieve neuronal cell injury in the hippocampal CA3 regions. Moreover, probiotic treatment decreased MDA levels and increased SOD activity. Furthermore, probiotic administration increased p-AKT and Bcl-2 levels in the hippocampus of the constipated mice, while decreasing the concentrations of Bax and cleaved caspase-3, so as to inhibit the neural apoptosis. In the present study, we confirm that probiotics can alleviate depression induced by constipation through protecting neuronal health via activation of the AKT signaling pathway.
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Affiliation(s)
- Nana Xu
- Laboratory of Morphology, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Wenting Fan
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Xiaoyan Zhou
- Laboratory of Morphology, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Yaping Liu
- Laboratory of Morphology, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Ping Ma
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, People's Republic of China
| | - Suhua Qi
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China.
| | - Bing Gu
- Medical Technology School, Xuzhou Medical University, Xuzhou, 221004, People's Republic of China.
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221002, People's Republic of China.
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Zeaxanthin improves diabetes-induced cognitive deficit in rats through activiting PI3K/AKT signaling pathway. Brain Res Bull 2017; 132:190-198. [PMID: 28599877 DOI: 10.1016/j.brainresbull.2017.06.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 06/02/2017] [Accepted: 06/02/2017] [Indexed: 12/16/2022]
Abstract
Published studies have shown that cognitive deficit is a characteristic manifestation of neurodegenerative disease in diabetes. However, there is no effective prevention and treatment for this diabetes-associated behavior disorder. In the present study, we attempted to elucidate the effect of zeaxanthin on cognitive deficit and the change in the hippocampus correlated with cognitive decline in diabetic rats. Diabetic rats in this study were induced by high-fat diet and low-dose streptozocin (STZ), cognitive ability of rats were evaluated use morris water maze (MWM) and morphology change in hippocampus was assessed by cresyl violet stain. Moreover, we detected the expression of phosphorylated serine/threonine kinase (p-AKT) and Cleaved caspase-3, and the activity of nuclear factor-κB (NF-κB) use western-blot (WB). Results displayed that supplementation with zeaxanthin reduce blood glucose, improve cognitive deficit, survive neural cell, increase p-AKT level, inhibit Cleaved caspase-3 level and NF-κB nuclear transcription in hippocampus. This study demonstrated that zeaxanthin ameliorate diabetes-related cognitive deficit may by means of protecting neural cell from hyperglycemia involved in AKT/NF-κB signaling pathway. This study may provide a potential therapeutic approach for the prevention of diabetes- associated cognitive deficit.
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Maubert ME, Wigdahl B, Nonnemacher MR. Opinion: Inhibition of Blood-Brain Barrier Repair as a Mechanism in HIV-1 Disease. Front Neurosci 2017; 11:228. [PMID: 28491017 PMCID: PMC5405129 DOI: 10.3389/fnins.2017.00228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 04/05/2017] [Indexed: 12/22/2022] Open
Affiliation(s)
- Monique E Maubert
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of MedicinePhiladelphia, PA, USA
| | - Brian Wigdahl
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of MedicinePhiladelphia, PA, USA.,Sidney Kimmel Cancer Center, Thomas Jefferson UniversityPhiladelphia, PA, USA
| | - Michael R Nonnemacher
- Department of Microbiology and Immunology, and Center for Molecular Virology and Translational Neuroscience, Institute for Molecular Medicine and Infectious Disease, Drexel University College of MedicinePhiladelphia, PA, USA
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Abstract
Excellent reviews on central N-methyl-D-aspartate receptor (NMDAR) signaling and function in cardiovascular regulating neuronal pools have been reported. However, much less attention has been given to NMDAR function in peripheral tissues, particularly the heart and vasculature, although a very recent review discusses such function in the kidney. In this short review, we discuss the NMDAR expression and complexity of its function in cardiovascular tissues. In conscious (contrary to anesthetized) rats, activation of the peripheral NMDAR triggers cardiovascular oxidative stress through the PI3K-ERK1/2-NO signaling pathway, which ultimately leads to elevation in blood pressure. Evidence also implicates Ca release, in the peripheral NMDAR-mediated pressor response. Despite evidence of circulating potent ligands (eg, D-aspartate and L-aspartate, L-homocysteic acid, and quinolinic acid) and also their coagonist (eg, glycine or D-serine), the physiological role of peripheral cardiovascular NMDAR remains elusive. Nonetheless, the cardiovascular relevance of the peripheral NMDAR might become apparent when its signaling is altered by drugs, such as alcohol, which interact with the NMDAR or its downstream signaling mechanisms.
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Affiliation(s)
- Marie A. McGee
- Oak Ridge Institute for Science and Education, Research Triangle Park, NC
| | - Abdel A. Abdel-Rahman
- Department of Pharmacology, Brody School of Medicine, East Carolina University, Greenville, NC 27834
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8
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Hao L, Wei X, Guo P, Zhang G, Qi S. Neuroprotective Effects of Inhibiting Fyn S-Nitrosylation on Cerebral Ischemia/Reperfusion-Induced Damage to CA1 Hippocampal Neurons. Int J Mol Sci 2016; 17:ijms17071100. [PMID: 27420046 PMCID: PMC4964476 DOI: 10.3390/ijms17071100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 06/10/2016] [Accepted: 07/04/2016] [Indexed: 12/17/2022] Open
Abstract
Nitric oxide (NO) can regulate signaling pathways via S-nitrosylation. Fyn can be post-translationally modified in many biological processes. In the present study, using a rat four-vessel-occlusion ischemic model, we aimed to assess whether Fyn could be S-nitrosylated and to evaluate the effects of Fyn S-nitrosylation on brain damage. In vitro, Fyn could be S-nitrosylated by S-nitrosoglutathione (GSNO, an exogenous NO donor), and in vivo, endogenous NO synthesized by NO synthases (NOS) could enhance Fyn S-nitrosylation. Application of GSNO, 7-nitroindazole (7-NI, an inhibitor of neuronal NOS) and hydrogen maleate (MK-801, the N-methyl-d-aspartate receptor (NMDAR) antagonist) could decrease the S-nitrosylation and phosphorylation of Fyn induced by cerebral ischemia/reperfusion (I/R). Cresyl violet staining validated that these compounds exerted neuroprotective effects against the cerebral I/R-induced damage to hippocampal CA1 neurons. Taken together, in this study, we demonstrated that Fyn can be S-nitrosylated both in vitro and in vivo and that inhibiting S-nitrosylation can exert neuroprotective effects against cerebral I/R injury, potentially via NMDAR-mediated mechanisms. These findings may lead to a new field of inquiry to investigate the underlying pathogenesis of stroke and the development of novel treatment strategies.
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Affiliation(s)
- Lingyun Hao
- Research Center for Biochemistry and Molecular Biology, and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou 221002, China.
- Jiangsu Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou 221002, China.
| | - Xuewen Wei
- Research Center for Biochemistry and Molecular Biology, and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou 221002, China.
- Department of Laboratory Medicine, Affiliated Municipal Hospital of Xuzhou Medical University, Xuzhou 221002, China.
| | - Peng Guo
- Research Center for Biochemistry and Molecular Biology, and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou 221002, China.
| | - Guangyi Zhang
- Research Center for Biochemistry and Molecular Biology, and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou 221002, China.
| | - Suhua Qi
- Research Center for Biochemistry and Molecular Biology, and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical University, Xuzhou 221002, China.
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9
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Sun Y, Zhan L, Cheng X, Zhang L, Hu J, Gao Z. The Regulation of GluN2A by Endogenous and Exogenous Regulators in the Central Nervous System. Cell Mol Neurobiol 2016; 37:389-403. [PMID: 27255970 DOI: 10.1007/s10571-016-0388-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Accepted: 05/25/2016] [Indexed: 12/25/2022]
Abstract
The NMDA receptor is the most widely studied ionotropic glutamate receptor, and it is central to many physiological and pathophysiological processes in the central nervous system. GluN2A is one of the two main types of GluN2 NMDA receptor subunits in the forebrain. The proper activity of GluN2A is important to brain function, as the abnormal regulation of GluN2A may induce some neuropsychiatric disorders. This review will examine the regulation of GluN2A by endogenous and exogenous regulators in the central nervous system.
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Affiliation(s)
- Yongjun Sun
- Department of Pharmacy, Hebei University of Science and Technology, Yuhua East Road 70, Shijiazhuang, 050018, People's Republic of China.,Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, People's Republic of China
| | - Liying Zhan
- Department of Pharmacy, Hebei University of Science and Technology, Yuhua East Road 70, Shijiazhuang, 050018, People's Republic of China
| | - Xiaokun Cheng
- North China Pharmaceutical Group New Drug Research and Development Co., Ltd, Shijiazhuang, 050015, People's Republic of China
| | - Linan Zhang
- Department of Pathophysiology, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Jie Hu
- School of Nursing, Hebei Medical University, Shijiazhuang, 050017, People's Republic of China
| | - Zibin Gao
- Department of Pharmacy, Hebei University of Science and Technology, Yuhua East Road 70, Shijiazhuang, 050018, People's Republic of China. .,Hebei Research Center of Pharmaceutical and Chemical Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, People's Republic of China. .,State Key Laboratory Breeding Base-Hebei Province Key Laboratory of Molecular Chemistry for Drug, Shijiazhuang, 050018, People's Republic of China.
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10
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Wei XW, Hao LY, Qi SH. Inhibition on the S-nitrosylation of MKK4 can protect hippocampal CA1 neurons in rat cerebral ischemia/reperfusion. Brain Res Bull 2016; 124:123-8. [PMID: 27091695 DOI: 10.1016/j.brainresbull.2016.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 03/15/2016] [Accepted: 04/08/2016] [Indexed: 12/24/2022]
Abstract
S-nitrosylation, the nitric oxide-derived post-translational modification of proteins, plays critical roles in various physiological and pathological functions. In this present study, a rat model of cerebral ischemia and reperfusion by four-vessel occlusion was generated to assess MKK4 S-nitrosylation. Immunoprecipitation and immunoblotting were performed to evaluate MKK4 S-nitrosylation and phosphorylation. Neuronal loss was observed using histological detection. These results indicated that endogenous NO promoted the S-nitrosylation of MKK4. However, application of the exogenous NO donor S-nitrosoglutathione (GNSO), an inhibitor of the neuronal nitric oxide synthase 7-nitroindazole (7-NI), and the N-methyl-d-aspartate receptor (NMDAR) antagonist MK801 diminished I/R-induced S-nitrosylation and phosphorylation. These compounds also markedly decreased cerebral I/R-induced degeneration and death of neurons in hippocampal CA1 region in rats. Taken together, we demonstrated for the first time, that cerebral ischemia/reperfusion can induce S-nitrosylation of MKK4. We also found that inhibiting S-nitrosylation and activation of MKK4 resulted in marked decreases in neuronal degeneration and apoptosis, potentially via NMDAR-mediated mechanisms. These findings may lead to a new field of inquiry to investigate the underlying pathogenesis of stoke and the development of novel treatment strategies.
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Affiliation(s)
- Xue Wen Wei
- Research Center for Biochemistry and Molecular Biology and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical College, Xuzhou, 221002, PR China; Department of Laboratory Medicine, Affiliated Municipal Hospital of Xuzhou Medical College, Xuzhou, Jiangsu, 221002, PR China
| | - Ling Yun Hao
- Research Center for Biochemistry and Molecular Biology and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical College, Xuzhou, 221002, PR China; Jiangsu Key Laboratory of Anesthesia and Analgesia Application Technology, Xuzhou, 221002, PR China
| | - Su Hua Qi
- Research Center for Biochemistry and Molecular Biology and Jiangsu Key Laboratory of Brain Disease Bioinformation, Xuzhou Medical College, Xuzhou, 221002, PR China.
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11
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Yap YW, Llanos RM, La Fontaine S, Cater MA, Beart PM, Cheung NS. Comparative Microarray Analysis Identifies Commonalities in Neuronal Injury: Evidence for Oxidative Stress, Dysfunction of Calcium Signalling, and Inhibition of Autophagy-Lysosomal Pathway. Neurochem Res 2015; 41:554-67. [PMID: 26318862 DOI: 10.1007/s11064-015-1666-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/14/2015] [Accepted: 07/14/2015] [Indexed: 12/21/2022]
Abstract
Mitochondrial dysfunction, ubiquitin-proteasomal system impairment and excitotoxicity occur during the injury and death of neurons in neurodegenerative conditions. The aim of this work was to elucidate the cellular mechanisms that are universally altered by these conditions. Through overlapping expression profiles of rotenone-, lactacystin- and N-methyl-D-aspartate-treated cortical neurons, we have identified three affected biological processes that are commonly affected; oxidative stress, dysfunction of calcium signalling and inhibition of the autophagic-lysosomal pathway. These data provides many opportunities for therapeutic intervention in neurodegenerative conditions, where mitochondrial dysfunction, proteasomal inhibition and excitotoxicity are evident.
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Affiliation(s)
- Yann Wan Yap
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC, 3125, Australia
| | - Roxana M Llanos
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC, 3125, Australia
| | - Sharon La Fontaine
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC, 3125, Australia.,Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, 3052, Australia
| | - Michael A Cater
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC, 3125, Australia
| | - Philip M Beart
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, 3052, Australia
| | - Nam Sang Cheung
- Centre for Cellular and Molecular Biology, School of Life and Environmental Sciences, Deakin University, Burwood, VIC, 3125, Australia.
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12
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Bikis C, Moris D, Vasileiou I, Patsouris E, Theocharis S. FAK/Src family of kinases: protective or aggravating factor for ischemia reperfusion injury in nervous system? Expert Opin Ther Targets 2014; 19:539-49. [DOI: 10.1517/14728222.2014.990374] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Iqbal Hossain M, Hoque A, Lessene G, Aizuddin Kamaruddin M, Chu PWY, Ng IHW, Irtegun S, Ng DCH, Bogoyevitch MA, Burgess AW, Hill AF, Cheng HC. Dual role of Src kinase in governing neuronal survival. Brain Res 2014; 1594:1-14. [PMID: 25451123 DOI: 10.1016/j.brainres.2014.10.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 10/13/2014] [Accepted: 10/21/2014] [Indexed: 11/24/2022]
Abstract
BACKGROUND Src-family kinases (SFKs) are involved in neuronal survival and their aberrant regulation contributes to neuronal death. However, how they control neuronal survival and death remains unclear. OBJECTIVE To define the effect of inhibition of Src activity and expression on neuronal survival. RESULTS In agreement with our previous findings, we demonstrated that Src was cleaved by calpain to form a 52-kDa truncated fragment in neurons undergoing excitotoxic cell death, and expression of the recombinant truncated Src fragment induced neuronal death. The data confirm that the neurotoxic signaling pathways are intact in the neurons we used for our study. To define the functional role of neuronal SFKs, we treated these neurons with SFK inhibitors and discovered that the treatment induced cell death, suggesting that the catalytic activity of one or more of the neuronal SFKs is critical to neuronal survival. Using small hairpin RNAs that suppress Src expression, we demonstrated that Src is indispensable to neuronal survival. Additionally, we found that neuronal death induced by expression of the neurotoxic truncated Src mutant, treatment of SFK inhibitors or knock-down of Src expression caused inhibition of the neuroprotective protein kinases Erk1/2, or Akt. CONCLUSIONS Src is critical to both neuronal survival and death. Intact Src sustains neuronal survival. However, in the excitotoxic condition, calpain cleavage of Src generates a neurotoxic truncated Src fragment. Both intact Src and the neurotoxic truncated Src fragment exert their biological actions by controlling the activities of neuroprotective protein kinases.
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Affiliation(s)
- M Iqbal Hossain
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Ashfaqul Hoque
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Guillaume Lessene
- Divisions of Chemical and Structural Biology, Walter and Eliza Institute for Medical Research, Parkville 3010, VIC, Australia
| | - M Aizuddin Kamaruddin
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Percy W Y Chu
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Ivan H W Ng
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia; Department of Biochemistry and Molecular Biology, Monash University, Melbourne 3800, VIC, Australia
| | - Sevgi Irtegun
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Dominic C H Ng
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Marie A Bogoyevitch
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Antony W Burgess
- Divisions of Chemical and Structural Biology, Walter and Eliza Institute for Medical Research, Parkville 3010, VIC, Australia
| | - Andrew F Hill
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia
| | - Heung-Chin Cheng
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville 3010, VIC, Australia.
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Wang R, Tu J, Zhang Q, Zhang X, Zhu Y, Ma W, Cheng C, Brann DW, Yang F. Genistein attenuates ischemic oxidative damage and behavioral deficits via eNOS/Nrf2/HO-1 signaling. Hippocampus 2013; 23:634-47. [PMID: 23536494 DOI: 10.1002/hipo.22126] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2013] [Indexed: 11/06/2022]
Abstract
Global cerebral ischemia, such as occurs following cardiac arrest, can lead to oxidative stress, hippocampal neuronal cell death, and cognitive defects. The current study examined the potential beneficial effect and underlying mechanisms of post-treatment with the naturally occurring isoflavonic phytoestrogen, genistein, which has been implicated to attenuate oxidative stress. Genistein (1 mg kg(-1)) was administered i.v. 5 min after reperfusion in rats subjected to four-vessel global cerebral ischemia (GCI). The results revealed that genistein exerted significant neuroprotection of hippocampal CA1 neurons following GCI, as evidenced by an increase in NeuN-positive neurons and the decrease in TUNEL-positive neurons. Furthermore, genistein treatment also resulted in significantly improved spatial learning and memory as compared to vehicle control animals. The beneficial effects of genistein appear to be mediated by an increase of phosphorylation/activation of eNOS, with subsequent activation of the antioxidant/detoxification Nrf2/Keap1 transcription system. Along these lines, genistein increased keap1 S-nitrosylation, with a corresponding nuclear accumulation and enhanced DNA binding activity of Nrf2. Genistein also enhanced levels of the Nrf2 downstream antioxidant protein, heme oxygenase (HO)-1, as compared to vehicle control groups. In accordance with its induction of Nrf2 activation, genistein exerted a robust attenuation of oxidative DNA damage and lipid peroxidative damage in hippocampal CA1 neurons after GCI, as measured by immunofluorescence staining of the oxidative stress markers, 8-hydroxy-2-deoxyguanosine (8-OHdG) and 4-Hydroxynonenal (4-HNE). Interestingly, the aforementioned effects of genistein were abolished by pretreatment with L-NAME, an inhibitor of eNOS activation. In conclusion, the results of the study demonstrate that low dose genistein can exert significant antioxidant, neuroprotective, and cognitive-enhancing effects in the hippocampal CA1 region following GCI. Mechanistically, the beneficial effects of genistein appear to be mediated by enhanced eNOS phosphorylation/activation and nitric oxide (NO)-mediated thiol modification of Keap1, with subsequent upregulation of the Nrf2/HO-1 antioxidative signaling pathway and a resultant attenuation of oxidative stress.
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Affiliation(s)
- Ruimin Wang
- Department of Pathology, Hebei Medical University, Shijiazhuang, China
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