1
|
Sun W, Li W, Zhang M, Du Q. Dexmedetomidine Protects Cortical Neurons from Propofol-Induced Apoptosis via Activation of Akt-IKK-NF-κB Signaling Pathway by α 2A-adrenoceptor. Appl Biochem Biotechnol 2024; 196:4849-4861. [PMID: 37979083 DOI: 10.1007/s12010-023-04768-4] [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] [Accepted: 10/31/2023] [Indexed: 11/19/2023]
Abstract
CONTEXT Propofol can induce neuroapoptosis. It has been reported that dexmedetomidine (DEX) has a protective effect on propofol-induced neuroapoptosis, but the specific mechanism needs to be further explored to provide a theoretical basis for their combined use. OBJECTIVE We aimed to explore the neuroprotective effect of DEX on primary cortical neurons treated by propofol and to elucidate the underlying mechanistic pathways. METHODS Cortical neurons were isolated from fetal rats and treated with propofol. MTT assays were performed to detect cell viability, α-tubulin immunofluorescent assays were conducted to observe cell abnormalities, and c-caspase3 immunofluorescent assays and flow cytometry were performed to examine cell apoptosis. Further, neurons were cotreated with propofol and DEX to study DEX's neuroprotective effects on propofol-caused neuronal injuries. Finally, the α2A-adrenoceptor was knocked out and/or the Akt activator (SC-79) was added to cells co-treated with propofol and DEX. The expression levels of Akt-IKK-NF-κB pathway-related proteins were detected by western blot. RESULTS Propofol decreased cell viability in a dose-dependent manner, triggered apoptosis, caused morphological abnormalities and down-regulated the phosphorylation levels of Akt, IKK, NF-κB and IκB in cortical neurons. DEX ameliorated the decrease of cell viability, alleviated neuronal apoptosis and promoted the downregulated expression levels of p-Akt, IKK, NF-κB, and IκB proteins which had been induced by propofol treatment. Western blot findings following the transfection of α2A-siRNA and the addition of SC-79 suggested that DEX's neuroprotective functions arose from the stimulation of α2A-adrenoceptors to activate the Akt-IKK-NF-κB signal pathway. CONCLUSION DEX protected neurons against propofol-induced apoptosis via activation of the Akt-IKK-NF-κB signal pathway through α2A-adrenoceptors.
Collapse
Affiliation(s)
- Wei Sun
- Department of Anesthesia, Shandong Provincial Hospital, Shandong First Medical University, No.324, Jingwu Road, Huaiyin District, Jinan, Shandong, 250021, China
| | - Wei Li
- Department of Anesthesia, Shandong Provincial Hospital, Shandong First Medical University, No.324, Jingwu Road, Huaiyin District, Jinan, Shandong, 250021, China
| | - Mengyuan Zhang
- Department of Anesthesia, Shandong Provincial Hospital, Shandong First Medical University, No.324, Jingwu Road, Huaiyin District, Jinan, Shandong, 250021, China
| | - Qihang Du
- Department of Anesthesia, Shandong Provincial Hospital, Shandong First Medical University, No.324, Jingwu Road, Huaiyin District, Jinan, Shandong, 250021, China.
| |
Collapse
|
2
|
Zandt MV, Pittenger C. Sexual dimorphism in histamine regulation of striatal dopamine. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.20.595049. [PMID: 38826392 PMCID: PMC11142073 DOI: 10.1101/2024.05.20.595049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Background Many neuropsychiatric disorders show sex differences in prevalence and presentation. For example, Tourette's Syndrome (TS) is diagnosed 3-5 times more often in males. Dopamine modulation of the basal ganglia is implicated in numerous neuropsychiatric conditions, including TS. Motivated by an unexpected genetic finding in a family with TS, we previously characterized the modulation of striatal dopamine by histamine. Methods We used microdialysis to analyze striatal dopamine response to the targeted infusion of histamine and histamine agonists. siRNA knockdown of histamine receptors was used to identify the cellular mediators of observed effects. Results Intracerebroventricular histamine reduced striatal dopamine in male mice, replicating previous work. Unexpectedly, histamine increased striatal dopamine in females. Targeted infusion of selected agonists revealed that the effect in males depends on H2R receptors in the substantia nigra pars compacta (SNc). Knockdown of H2R in SNc GABAergic neurons abrogated the effect, identifying these cells as a key locus of histamine's regulation of dopamine in males. In females, in contrast, H2R had no role; instead, H3R agonists in the striatum increased striatal dopamine. Strikingly, the effect of histamine on dopamine in females was modulated by the estrous cycle, appearing in estrus/proestrus but not in metestrus/diestrus. Conclusions These findings confirm the regulation of striatal dopamine by histamine but identify marked sexual dimorphism in and estrous modulation of this effect. These findings may shed light on the mechanistic underpinnings of other sex differences in the striatal circuitry, perhaps including the marked sex differences seen in TS and related neuropsychiatric conditions.
Collapse
Affiliation(s)
- Meghan Van Zandt
- Pittenger Laboratory, Yale University School of Medicine, Department of Psychiatry, New Haven, CT, USA
| | - Christopher Pittenger
- Pittenger Laboratory, Yale University School of Medicine, Department of Psychiatry, New Haven, CT, USA
- Yale Child Study Center, Yale University School of Medicine, New Haven, CT, USA
- Department of Psychology, Yale School of Arts and Sciences, New Haven, USA
- Center for Brain and Mind Health, Yale University School of Medicine, New Haven, USA
- Wu-Tsai Institute, Yale University, New Haven, CT, USA
| |
Collapse
|
3
|
Xu G, Wang Y, Chen Z, Zhang Y, Zhang X, Zhang G. Esketamine improves propofol-induced brain injury and cognitive impairment in rats. Transl Neurosci 2022; 13:430-439. [PMID: 36561289 PMCID: PMC9730546 DOI: 10.1515/tnsci-2022-0251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 09/09/2022] [Accepted: 09/09/2022] [Indexed: 12/13/2022] Open
Abstract
As an intravenous anesthetic, propofol has been indicated to induce neurotoxicity in both animal and human brains. It is of great significance to better understand the potential mechanism of propofol-induced neurotoxicity to eliminate the side effects of propofol. Esketamine is a sedative that has been proven to have an antidepressant effect. However, its effect on propofol-induced neurotoxicity and the underlying mechanism remain unclear. Herein, we investigated the role of esketamine in propofol-induced brain injury. A rat model of propofol-induced brain injury was established with or without the treatment of esketamine. The results demonstrated that propofol-induced impairment in spatial learning and memory of rats and promoted oxidative stress, neuronal injury and apoptosis in rat hippocampal tissues. The effects caused by propofol were attenuated by esketamine. Esketamine activated the mature brain-derived neurotrophic factor/tropomyosin receptor kinase B/phosphatidylinositide 3-kinase (mBDNF/TrkB/PI3K) signaling pathway in propofol-administrated rats. Moreover, knocking down BDNF partially reversed esketamine-mediated activation of the mBDNF/TrkB/PI3K signaling pathway and inhibition of neuronal apoptosis in propofol-induced rats. Overall, esketamine mitigates propofol-induced cognitive dysfunction and brain injury in rats by activating mBDNF/TrkB/PI3K signaling.
Collapse
Affiliation(s)
- Guiping Xu
- Department of Anesthesiology, People’s Hospital of Xinjiang Uygur Autonomous Region, Xinjiang Clinical Research Center for Anesthesia Management, Urumqi 830001, China
| | - Yang Wang
- Department of Anesthesiology, People’s Hospital of Xinjiang Uygur Autonomous Region, Xinjiang Clinical Research Center for Anesthesia Management, Urumqi 830001, China
| | - Zhe Chen
- Department of Anesthesiology, People’s Hospital of Xinjiang Uygur Autonomous Region, Xinjiang Clinical Research Center for Anesthesia Management, Urumqi 830001, China
| | - Yuxuan Zhang
- Department of Anesthesiology, People’s Hospital of Xinjiang Uygur Autonomous Region, Xinjiang Clinical Research Center for Anesthesia Management, Urumqi 830001, China
| | - Xuexue Zhang
- Graduate School of Xinjiang Medical University, Urumqi 830000, China
| | - Guichao Zhang
- Medical School, Shihezi University, Xinjiang, Shihezi, 832000, China
| |
Collapse
|
4
|
Xing N, Xing F, Li Y, Li P, Zhang J, Wang D, Zhang W, Yang J. Dexmedetomidine improves propofol-induced neuronal injury in rat hippocampus with the involvement of miR-34a and the PI3K/Akt signaling pathway. Life Sci 2020; 247:117359. [DOI: 10.1016/j.lfs.2020.117359] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 01/16/2020] [Accepted: 01/24/2020] [Indexed: 01/26/2023]
|
5
|
Li W, Yu L, Yan X, Cai L, Wan L, Teng Q, Li Y, Wang Y, Xu H. Reduced Cyclic Adenosine Monophosphate Level in Hippocampal CA1 Participates in Propofol Induced Amnesia in Rats. Front Neurosci 2018; 12:337. [PMID: 29875624 PMCID: PMC5974205 DOI: 10.3389/fnins.2018.00337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/30/2018] [Indexed: 11/20/2022] Open
Abstract
Propofol inhibits long-term potentiation (LTP) in the hippocampal CA1 region and impedes episodic memory formation. However, the molecular mechanisms involved in the effect of propofol are still poorly understood. It had been reported that propofol inhibited cAMP response element binding protein signaling, which was proposed to contribute to memory retention impairment in rats. Here, we first demonstrated that propofol perfusion could inhibit forskolin induced LTP in the rat hippocampal CA1 slices. Propofol also reduced the level of cAMP, which could be reversed by non-selective PDE inhibitor IBMX. We further discovered that propofol could increase both PDE4 activity and PDE4AX protein expressions in the hippocampal CA1 region. Furthermore, pretreatment of rolipram, a PDE4 inhibitor, rescued propofol induced inhibition of CA1 LTP and the impairment of hippocampus-dependent memory formation in rats. Thus, our results suggest that reduced levels of cAMP by increasing PDE4 activity and PDE4AX protein expressions in the hippocampal CA1 region plays an important role in the propofol-induced amnesia.
Collapse
Affiliation(s)
- Weiwei Li
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China.,Institutes of Brain Science & State Key Laboratory of Medical Neurobiology, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Anesthesiology, Xinhua Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Lingling Yu
- Department of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xiaodi Yan
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Linlin Cai
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Li Wan
- Institutes of Brain Science & State Key Laboratory of Medical Neurobiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qinyu Teng
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yonghua Li
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yun Wang
- Institutes of Brain Science & State Key Laboratory of Medical Neurobiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Haitao Xu
- Department of Anesthesiology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| |
Collapse
|
6
|
Changes in brain activation induced by visual stimulus during and after propofol conscious sedation. Neuroreport 2016; 27:1256-1260. [DOI: 10.1097/wnr.0000000000000688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
7
|
Chen Y, Paavola J, Stegajev V, Stark H, Chazot PL, Wen JG, Konttinen YT. Activation of histamine H3 receptor decreased cytoplasmic Ca(2+) imaging during electrical stimulation in the skeletal myotubes. Eur J Pharmacol 2015; 754:173-8. [PMID: 25746421 DOI: 10.1016/j.ejphar.2015.02.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 02/02/2015] [Accepted: 02/15/2015] [Indexed: 12/31/2022]
Abstract
Histamine is a neurotransmitter and chemical mediator in multiple physiological processes. Histamine H3 receptor is expressed in the nervous system, heart, and gastrointestinal tract; however, little is known about H3 receptor in skeletal muscle. The aim of this study was to investigate the role of H3 receptor in skeletal myotubes. The expression of H3 receptor and myosin heavy chain (MHC), a late myogenesis marker, was assessed by real-time PCR and immunostaining in C2C12 skeletal myogenesis and adult mid-urethral skeletal muscle tissues. H3 receptor mRNA showed a significant increase upon differentiation of C2C12 into myotubes: 1-, 26-, 91-, and 182-fold at days 0, 2, 4, and 6, respectively. H3 receptor immunostaining in differentiated C2C12 cells and adult skeletal muscles was positive and correlated with that of MHC. The functional role of H3receptor in differentiated myotubes was assessed using an H3 receptor agonist, (R)-a-methylhistamine ((R)-α-MeHA). Ca(2+) imaging, stimulated by electric pacing, was decreased by 55% after the treatment of mature C2C12 myotubes with 1μM (R)-α-MeHA for 10min and 20min, while treatment with 100nm (R)-α-MeHA for 5min caused 45% inhibition. These results suggested that H3 receptor may participate in the maintenance of the relaxed state and prevention of over-contraction in mature differentiated myotubes. The elucidation of the role of H3R in skeletal myogenesis and adult skeletal muscle may open a new direction in the treatment of skeletal muscle disorders, such as muscle weakness, atrophy, and myotonia in motion systems or peri-urethral skeletal muscle tissues.
Collapse
Affiliation(s)
- Yan Chen
- Department of Urology, Institute of Clinic Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052 China; Department of Medicine, Helsinki University Central Hospital, Biomedicum 1, PO Box 700, FIN-00029 Helsinki, Finland; Department of Anatomy, University of Helsinki, Biomedicum 1, PO Box 63, FIN-00029 Helsinki, Finland
| | - Jere Paavola
- Unit of Cardiovascular Research, Minerva Foundation Institute for Medical Research, Biomedicum Helsinki 2U, Tukholmankatu 8, 00290, Helsinki, Finland
| | - Vasili Stegajev
- Department of Medicine, Helsinki University Central Hospital, Biomedicum 1, PO Box 700, FIN-00029 Helsinki, Finland; Department of Anatomy, University of Helsinki, Biomedicum 1, PO Box 63, FIN-00029 Helsinki, Finland
| | - Holger Stark
- Goethe University, Institute of Pharmaceutical Chemistry, ZAFES/OSF/NeFF, Max-von-Laue-Str. 9, 60438 Frankfurt am Main, Germany
| | - Paul L Chazot
- School of Biological & Biomedical Sciences, Durham University, South Road, Durham DH1 3LE, Durham, UK
| | - Jian Guo Wen
- Department of Urology, Institute of Clinic Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052 China.
| | - Yrjö T Konttinen
- Department of Medicine, Helsinki University Central Hospital, Biomedicum 1, PO Box 700, FIN-00029 Helsinki, Finland; ORTON Orthopedic Hospital of the ORTON Foundation, Tenholantie 10, 00280 Helsinki, Finland; COXA Hospital for Joint Replacement, Biokatu 6 B, 33520 Tampere, Finland.
| |
Collapse
|
8
|
Li M, Zhang X, Wu A, Wang Z, Li J, Yue Y. Propofol-induced age-different hypocampal long-term potentiation is associated with F-actin polymerization in rats. Cell Biochem Biophys 2014; 71:1059-66. [PMID: 25344646 DOI: 10.1007/s12013-014-0309-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Elderly patients may experience a decline in cognition after a surgery performed under anesthesia. Propofol (2,6-diisopropylphenol), a common intravenous anesthetic agent, has been reported to mediate the long-term potentiation (LTP), a major form of synaptic plasticity. The present study was conducted to investigate the underlying mechanisms in young (3-month-old) and elderly (20-month-old) male rats. A decline of theta-burst stimulation (TBS)-induced LTP in the hippocampal CA1 area was found in the young rats at 72 h post-anesthesia, and this alteration almost disappeared after 2-week-recovery as compared with their age-matched control rats. On the other hand, the propofol-induced CA1 LTP reduction was persistent in the aged rats during the whole experimental process. Moreover, TBS-induced increases in CA 1 filamentous-actin (F-actin) polymerization and phospho-cofilin expression were enhanced at 72 h post-anesthesia in young rats, and this change was significantly attenuated after 2 weeks. However, in anesthetic elderly rats, the alterations in F-actin and phospho-cofilin of the CA1 region were still presented at the end of the experiments. Taken together, our results indicate that the discrepant responses between young and aged rats to propofol anesthesia may be associated with the differential polymerization of F-actin.
Collapse
Affiliation(s)
- Mingying Li
- Department of Anaesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | | | | | | | | | | |
Collapse
|