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Jia D, Wang F, Bai Z, Chen X. BDNF-TrkB/proBDNF-p75 NTR pathway regulation by lipid emulsion rescues bupivacaine-induced central neurotoxicity in rats. Sci Rep 2023; 13:18364. [PMID: 37884604 PMCID: PMC10603093 DOI: 10.1038/s41598-023-45572-8] [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: 04/10/2023] [Accepted: 10/21/2023] [Indexed: 10/28/2023] Open
Abstract
Bupivacaine (BPV) can cause severe central nervous system toxicity when absorbed into the blood circulation system. Rapid intravenous administration of lipid emulsion (LE) could be used to treat local anaesthetic toxicity. This study aimed to investigate the mechanism by which the BDNF-TrkB/proBDNF-p75NTR pathway regulation by LE rescues BPV induced neurotoxicity in hippocampal neurons in rats. Seven- to nine-day-old primary cultured hippocampal neurons were randomly divided into 6 groups: the blank control group (Ctrl), the bupivacaine group (BPV), the lipid emulsion group (LE), the bupivacaine + lipid emulsion group (BPV + LE), the bupivacaine + lipid emulsion + tyrosine kinase receptor B (TrkB) inhibitor group (BPV + LE + K252a), the bupivacaine + lipid emulsion + p75 neurotrophic factor receptor (p75NTR) inhibitor group (BPV + LE + TAT-Pep5). All hippocampal neurons were incubated for 24 h, and their growth state was observed by light microscopy. The relative TrkB and p75NTR mRNA levels were detected by real-time PCR. The protein expression levels of brain-derived neurotrophic factor (BDNF), proBDNF, TrkB, p75NTR and cleaved caspase-3 were detected by western blotting. The results showed that primary hippocampal neuron activity was reduced by BPV. As administration of LE elevated hippocampal neuronal activity, morphology was also somewhat improved. The protein expression and mRNA levels of TrkB and p75NTR were decreased when BPV induced hippocampal neuronal toxicity, while the expression of BDNF was increased. At the same time, BPV increased the original generation of cleaved caspase-3 protein content by hippocampal neurons, while the content of cleaved caspase-3 protein in hippocampal neurons cotreated with LE and BPV was decreased. Thus, this study has revealed LE may reduce apoptosis and promote survival of hippocampal neurons by regulating the BDNF-TrkB pathway and the proBDNF-p75NTR pathway to rescue BPV induced central neurotoxicity in rats.
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Affiliation(s)
- Danting Jia
- Department of Anesthesiology, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Fang Wang
- Department of Anaesthesiology, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan, 750002, Ningxia, China
| | - Zhixia Bai
- Department of Anesthesiology, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China
| | - Xuexin Chen
- Department of Anesthesiology, General Hospital of Ningxia Medical University, Yinchuan, 750004, Ningxia, China.
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You C, Zhang Z, Ying H, Yang Z, Ma Y, Hong J, Xue M, Li X, Li H, Zhang C, Wang W, Cai X, Li X. Blockage of calcium-sensing receptor improves chronic intermittent hypoxia-induced cognitive impairment by PERK-ATF4-CHOP pathway. Exp Neurol 2023; 368:114500. [PMID: 37553048 DOI: 10.1016/j.expneurol.2023.114500] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 07/24/2023] [Accepted: 08/03/2023] [Indexed: 08/10/2023]
Abstract
Obstructive sleep apnea-hypopnea syndrome (OSAHS) is involved in cognitive impairment of children. Chronic intermittent hypoxia (CIH) is considered as the critical pathophysiological mechanism of OSAHS. Calcium sensitive receptor (CaSR) mediated apoptosis in many neurological disease models by endoplasmic reticulum stress (ERS)-related pathway. However, little is known about the role of CaSR in OSAHS-induced cognitive dysfunction. In this study, we explored the effect of CaSR on CIH-induced cognitive impairment and possible mechanisms on regulation of PERK-ATF4-CHOP pathway in vivo and in vitro. CIH exposed for 9 h in PC12 cells and resulted in the cell apoptosis, simulating OSAHS-induced neuronal injury. CIH upregulated the level of CaSR, p-PERK, ATF4 and CHOP, contributing to the cell apoptosis. Treated with CaSR inhibitor (NPS-2143) or p-PERK inhibitor (GSK2656157) before CIH exposure, CIH-induced PC12 cell apoptosis was alleviated via inhibition of CaSR by downregulating p-PERK, ATF4 and CHOP. In addition, we established CIH mice model. With CIH exposure for 4 weeks in mice, more spatial memory errors were observed during 8-arm radial maze test. CIH significantly increased apoptotic cells in hippocampus via upregulating cleaved Caspase-3 and downregulating ratio of Bcl-2 to Bax. Besides, treatment of CaSR inhibitor alleviated the hippocampal neuronal apoptosis following CIH with downregulated p-PERK, ATF4 and CHOP, suggesting that CaSR contributed to CIH-induced neuronal apoptosis in hippocampus via ERS pathway. Sum up, our results demonstrated that CaSR accelerated hippocampal apoptosis via PERK-ATF4-CHOP pathway, holding a critical function on CIH-mediated cognitive impairment. Conversely, inhibition of CaSR suppressed PERK-ATF4-CHOP pathway and alleviated cognitive impairment.
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Affiliation(s)
- Cancan You
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Zilong Zhang
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Huiya Ying
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Zijing Yang
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Yixuan Ma
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Jingyi Hong
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Mingjie Xue
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Xuan Li
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Huimin Li
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Department of Pediatric, Taizhou Women and Children's Hospital of Wenzhou Medical University, Taizhou 318000, China
| | - Chengrui Zhang
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China; Clinical Medicine, The Second School of Medicine, Wenzhou Medical University, Wenzhou 325000, China
| | - Wei Wang
- Department of Pediatric Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China.
| | - Xiaohong Cai
- Department of Pediatric Sleep, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China.
| | - Xiucui Li
- Department of Pediatric Neurology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China.
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Russell T, Gangotia D, Barry G. Assessing the potential of repurposing ion channel inhibitors to treat emerging viral diseases and the role of this host factor in virus replication. Biomed Pharmacother 2022; 156:113850. [DOI: 10.1016/j.biopha.2022.113850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/25/2022] [Accepted: 10/06/2022] [Indexed: 12/03/2022] Open
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Wang J, Gong Y, Tan H, Li W, Yan B, Cheng C, Wan J, Sun W, Yuan C, Yao LH. Cordycepin suppresses glutamatergic and GABAergic synaptic transmission through activation of A 1 adenosine receptor in rat hippocampal CA1 pyramidal neurons. Biomed Pharmacother 2021; 145:112446. [PMID: 34808556 DOI: 10.1016/j.biopha.2021.112446] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/09/2021] [Accepted: 11/16/2021] [Indexed: 12/21/2022] Open
Abstract
Cordycepin (known as 3-deoxyadenosine, CRD), a natural product from the valuable traditional Chinese medicine Cordyceps militaris, has been reported to improve cognitive function and modulate neuroprotective effects on the central nervous system (CNS). However, the modulating mechanisms of cordycepin on information processing in hippocampal CA1 pyramidal neurons are not fully understood. To clarify how cordycepin modulates synaptic responses of pyramidal neurons in rat hippocampal CA1 region, we conducted an electrophysiological experiment using whole-cell patch-clamp technique. The spontaneous and miniature excitatory postsynaptic currents (sEPSCs and mEPSCs, respectively) and the spontaneous and miniature inhibitory postsynaptic currents (sIPSCs and mIPSCs, respectively) recorded by this technique evaluated pure single or multi-synapse responses and enabled us to accurately quantify how cordycepin influenced the pre and postsynaptic aspects of synaptic transmission. The present results showed that cordycepin significantly decreased the frequency of both glutamatergic and GABAergic postsynaptic currents without affecting the amplitude, while these inhibitory effects were antagonized by the A1 adenosine receptor antagonist (DPCPX), but not the A2A (ZM 241385), A2B (MRS1754) and A3 (MRS1191) adenosine receptor antagonists. Taken together, our results suggested that cordycepin had a clear presynaptic effect on glutamatergic and GABAergic transmission, and provided novel evidence that cordycepin suppresses the synaptic transmission through the activation of A1AR.
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Affiliation(s)
- Jinxiu Wang
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Yanchun Gong
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China; School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Haoyuan Tan
- Clinical School of Acupuncture and Rehabilitation, Guangzhou University of Traditional Chinese Medicine, GuangZhou 510720, PR China
| | - Wenxi Li
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Baiyi Yan
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Chunfang Cheng
- School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Juan Wan
- School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Wei Sun
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Chunhua Yuan
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China; School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China
| | - Li-Hua Yao
- School of Life Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China; School of Sport Science, Jiangxi Science & Technology Normal University, Nanchang, Jiangxi 330013, PR China.
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Liu Y, Zhang J, Yu P, Niu J, Yu S. Mechanisms and Efficacy of Intravenous Lipid Emulsion Treatment for Systemic Toxicity From Local Anesthetics. Front Med (Lausanne) 2021; 8:756866. [PMID: 34820396 PMCID: PMC8606423 DOI: 10.3389/fmed.2021.756866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/07/2021] [Indexed: 11/13/2022] Open
Abstract
Local anesthetics are widely used clinically for perioperative analgesia to achieve comfort in medical treatment. However, when the concentration of local anesthetics in the blood exceeds the tolerance of the body, local anesthetic systemic toxicity (LAST) will occur. With the development and popularization of positioning technology under direct ultrasound, the risks and cases of LAST associated with direct entry of the anesthetic into the blood vessel have been reduced. Clinical occurrence of LAST usually presents as a series of severe toxic reactions such as myocardial depression, which is life-threatening. In addition to basic life support (airway management, advanced cardiac life support, etc.), intravenous lipid emulsion (ILE) has been introduced as a treatment option in recent years and has gradually become the first-line treatment for LAST. This review introduces the mechanisms of LAST and identifies the clinical symptoms displayed by the central nervous system and cardiovascular system. The paper features the multimodal mechanism of LAST reversal by ILE, describes research progress in the field, and identifies other anesthetics involved in the resuscitation process of LAST. Finally, the review presents key issues in lipid therapy. Although ILE has achieved notable success in the treatment of LAST, adverse reactions and contraindications also exist; therefore, ILE requires a high degree of attention during use. More in-depth research on the treatment mechanism of ILE, the resuscitation dosage and method of ILE, and the combined use with other resuscitation measures is needed to improve the efficacy and safety of clinical resuscitation after LAST in the future.
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Affiliation(s)
- Yang Liu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Jing Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Peng Yu
- Department of Endocrinology and Metabolism, The Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jiangfeng Niu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
| | - Shuchun Yu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, China
- Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang, China
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Nie H, Bai Z, Li Z, Yan L, Chen XX. Intravenous lipid emulsion modifies synaptic transmission in hippocampal CA1 pyramidal neurons after bupivacaine-induced central nervous system toxicity. J Neurochem 2019; 154:144-157. [PMID: 31758799 PMCID: PMC7383907 DOI: 10.1111/jnc.14924] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 11/06/2019] [Accepted: 11/06/2019] [Indexed: 12/23/2022]
Abstract
Local anesthetics can cause severe toxicity when absorbed systemically. Rapid intravenous administration of lipid emulsion (LE) is the standard of care for severe local anesthetic systemic toxicity which can cause cardiovascular and central nervous system (CNS) injury. The biological mechanism by which LE alleviates CNS toxicity remains unknown and understudied. Previous research has suggested that local anesthetics cause an imbalance of excitatory and inhibitory transmission in the brain. Therefore, this study aimed to observe the effect of LE on glutamate- and GABA-induced currents in CA1 pyramidal neurons after bupivacaine-induced CNS toxicity. We further characterized post-synaptic modifications in these cells to try to elucidate the mechanism by which LE mediates bupivacaine-induced CNS toxicity. Sprague-Dawley rats received intravenous bupivacaine (1 mg kg-1 min-1 ) in either normal saline or LE (or LE without bupivacaine) for 5 min. An acute brain slice preparation and a combination of whole-cell patch clamp techniques and whole-cell recordings were used to characterize action potential properties, miniature excitatory, and inhibitory post-synaptic currents, and post-synaptic modifications of excitatory and inhibitory transmission in CA1 hippocampal pyramidal neurons. The expression level of GABAA receptors were assessed with western blotting, whereas H&E and TUNEL staining were used to assess cytoarchitecture and apoptosis levels respectively. Bupivacaine treatment significantly increased the number of observed action potentials, whereas significantly decreasing rheobase, the first interspike interval (ISI), and hyperpolarization-activated cation currents (Ih) in CA1 pyramidal neurons. LE treatment significantly reduced the frequency of miniature inhibitory post-synaptic currents and enhanced GABA-induced paired pulse ratio with 50 ms interval stimulation in bupivacaine-treated rats. Regulation of GABAA levels is a promising mechanism by which LE may ameliorate CNS toxicity after systemic absorption of bupivacaine.
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Affiliation(s)
- Hao Nie
- Department of Anesthesiology, General Hospital of Ning Xia Medical University, Yin Chuan, China
| | - Zhixia Bai
- Department of Anesthesiology, General Hospital of Ning Xia Medical University, Yin Chuan, China
| | - Zhenzhou Li
- Department of Anesthesiology, General Hospital of Ning Xia Medical University, Yin Chuan, China
| | - Li Yan
- Institute of Brain Sciences, YICHUANG Institute of Bio-Industry, Beijing, China
| | - Xue-Xin Chen
- Department of Anesthesiology, General Hospital of Ning Xia Medical University, Yin Chuan, China
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