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Li QQ, Yu Q, Liu ZY, Zhang Q, Li MY, Hu Y. Sevoflurane anesthesia during late gestation induces cognitive disorder in rat offspring via the TLR4/BDNF/TrkB/CREB pathway. J Neuropathol Exp Neurol 2024:nlae096. [PMID: 39271176 DOI: 10.1093/jnen/nlae096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024] Open
Abstract
Sevoflurane (Sevo) is widely used for general anesthesia during pregnancy. Emerging evidence indicates that maternal Sevo exposure can trigger developmental neurotoxicity in the offspring. Nonetheless, the underlying mechanisms need further investigation. Pregnant Sprague-Dawley rats on gestational day 18 were exposed to 3.5% Sevo to induce the rat model of neurotoxicity. TAK-242, a TLR4 inhibitor, was administrated to inhibit the signaling transduction. Hippocampal tissues of rat offspring were harvested for immunohistochemical staining, TUNEL staining, Western blotting, ELISA, and measurement of oxidative stress-related markers. Serum samples were collected to evaluate lipid metabolism-associated factors. Morris water maze was implemented to test the cognitive function of offspring rats. Rat hippocampal neurons were isolated to elucidate the effect of TAK-242 on the BDNF/TrkB/CREB signaling in vitro. The results showed that maternal Sevo exposure during the third trimester induced neuroinflammation, lipid metabolism disturbance, and oxidative stress, and impaired the spatial learning and memory of rat offspring. Sevo upregulated TLR4 and impeded BDNF/TrkB/CREB signaling transduction in the hippocampus of rat offspring; TAK-242 administration reversed these effects. In conclusion, Sevo anesthesia during late gestation impairs the learning and memory ability of rat offspring possibly by promoting neuroinflammation and disturbing lipid metabolism via the TLR4/BDNF/TrkB/CREB pathway.
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Affiliation(s)
- Qian-Qian Li
- Department of Anesthesiology and Operative Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Qi Yu
- Department of Anesthesiology and Operative Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Zhi-Yi Liu
- Department of Anesthesiology and Operative Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Qin Zhang
- Department of Anesthesiology and Operative Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Meng-Yuan Li
- Department of Anesthesiology and Operative Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Yan Hu
- Department of Anesthesiology and Operative Medicine, Medical Center of Anesthesiology and Pain, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
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Miao Z, Jiang Y, Wang F, Shi L, Zhou R, Niu Y, Zhang L. Clinical concentration of sevoflurane had no short-term effect on the myelin sheath in prefrontal cortex of aged marmosets. Front Neurosci 2024; 18:1447743. [PMID: 39176380 PMCID: PMC11338887 DOI: 10.3389/fnins.2024.1447743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 07/29/2024] [Indexed: 08/24/2024] Open
Abstract
Introduction The fragile brain includes both the developing brain in childhood and the deteriorating brain in elderly. While the effects of general anesthesia on the myelin sheath of developing brain have been well-documented, limited research has explored its impact on degenerating brain in elderly individuals. Methods In our study, aged marmosets in control group were only anesthetized with 6-8% sevoflurane and 100% oxygen (2 L/min) for 1-2 min for anesthesia induction. In addition to anesthesia induction, the anesthesia group was exposed to a clinical concentration of sevoflurane (1.5-2%) for 6 h to maintain anesthesia. After anesthesia, scanning electron microscopy (SEM) and artificial intelligence-assisted image analysis were utilized to observe the effects of general anesthesia on the myelin sheath in prefrontal cortex (PFC) of aged marmosets. Results Compared with the control group, our findings revealed no evidence that 6 h of sevoflurane general anesthesia altered the thickness of myelin sheath, the diameter of myelinated axons, and the g-ratio in prefrontal cortex of aged marmosets. Conclusion Clinical concentration of sevoflurane may have no short-term effect on the myelin sheath in prefrontal cortex of aged marmosets.
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Affiliation(s)
- Zhengjie Miao
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Jiang
- Shanghai Institute of Precision Medicine, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fangfang Wang
- Shanghai Institute of Precision Medicine, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lingling Shi
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ren Zhou
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yixuan Niu
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei Zhang
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Wei F, Chen T, Huang Y, Yang Y, Cheng X, Yang L. Multiple Exposures to Sevoflurane General Anesthesia During Pregnancy Inhibit CaMKII/CREB Axis by Downregulating HCN2 to Induce an Autism-Like Phenotype in Offspring Mice. J Mol Neurosci 2024; 74:69. [PMID: 39017898 DOI: 10.1007/s12031-024-02243-1] [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: 03/19/2024] [Accepted: 07/03/2024] [Indexed: 07/18/2024]
Abstract
The objective of this investigation was to examine the impact of multiple exposures to general anesthesia (GA) with sevoflurane on the offspring of pregnant mice, as well as to elucidate the underlying mechanism. Neurodevelopmental assessments, including various reflexes and behavioral tests, were conducted on the offspring in the GA group to evaluate neuronal cell development. Furthermore, neonatal mouse neuronal cells were isolated and transfected with a high-expression CREB vector (pcDNA3.1-CREB), followed by treatment with sevoflurane (0.72 mol/L), ZD7288 (50 μmol/L), and KN-62 (10 μmol/L), or a combination of these compounds. The expression of relevant genes was then analyzed using qRT-PCR and western blot techniques. In comparison to the sham group, neonatal mice in the GA group exhibited significantly prolonged latencies in surface righting reflex, geotaxis test, and air righting reflex. Furthermore, there was a notable deceleration in the development of body weight and tail in the GA group. These mice also displayed impairments in social ability, reduced reciprocal social interaction behaviors, diminished learning capacity, and heightened levels of anxious behaviors. Additionally, synaptic trigger malfunction was observed, along with decreased production of c-Fos and neurotrophic factors. Sevoflurane was found to notably decrease cellular c-Fos and neurotrophic factor production, as well as the expression of HCN2 and CaMKII/CREB-related proteins. The inhibitory effects of sevoflurane on HCN2 or CaMKII channels were similar to those observed with ZD7288 or KN-62 inhibition. However, overexpression of CREB mitigated the impact of sevoflurane on neuronal cells. Repetitive exposure to sevoflurane general anesthesia while pregnant suppresses the CaMKII/CREB pathway, leading to the development of autism-like characteristics in offspring mice through the reduction of HCN2 expression.
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Affiliation(s)
- Fusheng Wei
- Department of Anesthesiology and Operation, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330052, China
| | - Ting Chen
- Department of Anesthesiology and Operation, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330052, China
| | - Yuanlu Huang
- Department of Anesthesiology and Operation, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330052, China
| | - Yuxuan Yang
- Department of Anesthesiology and Operation, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330052, China
| | - Xiaoe Cheng
- Department of Anesthesiology and Operation, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330052, China
| | - Lei Yang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi, 330006, China.
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Zhang M, Wei R, Jing J, Huang S, Qiu G, Xia X, Zhang Y, Li Y. Subsequent maternal sleep deprivation aggravates cognitive impairment by modulating hippocampal neuroinflammatory responses and synaptic function in maternal isoflurane-exposed offspring mice. Brain Behav 2024; 14:e3610. [PMID: 38945806 PMCID: PMC11214875 DOI: 10.1002/brb3.3610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 05/29/2024] [Accepted: 06/11/2024] [Indexed: 07/02/2024] Open
Abstract
INTRODUCTION Pregnant women may need to undergo non-obstetric surgery under general anesthesia owing to medical needs, and pregnant women frequently experience sleep disturbances during late gestation. Preclinical studies demonstrated that maternal isoflurane exposure (MISO) or maternal sleep deprivation (MSD) contributed to cognitive impairments in offspring. Research studies in mice have revealed that SD can aggravate isoflurane-induced cognitive deficits. However, it remains unclear whether MSD aggravates MISO-induced cognitive deficits in offspring. The purpose of this research was to explore the combined effects of MSD and MISO on offspring cognitive function and the role of neuroinflammation and synaptic function in the process of MSD + MISO. METHODS Pregnant mice were exposed to 1.4% isoflurane by inhalation for 4 h on gestational day (GD) 14. Dams were then subjected to SD for 6 h (12:00-18:00 h) during GD15-21. At 3 months of age, the offspring mice were subjected to the Morris water maze test to assess cognitive function. Then the levels of inflammatory and anti-inflammatory markers and synaptic function-related proteins were assessed using molecular biology methods. RESULTS The results of this study demonstrated that MISO led to cognitive dysfunction, an effect that was aggravated by MSD. In addition, MSD exacerbated the maternal isoflurane inhalation, leading to an enhancement in the expression levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor-alpha and a reduction in the hippocampal levels of IL-10, synaptophysin, post-synaptic density-95, growth-associated protein-43, and brain-derived neurotrophic factor. CONCLUSION Our findings revealed that MSD aggravated the cognitive deficits induced by MISO in male offspring mice, and these results were associated with neuroinflammation and alternations in synaptic function.
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Affiliation(s)
- Meng‐Ying Zhang
- Department of Anesthesiologythe Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Ru‐Meng Wei
- Department of Neurology (Sleep Disorders)the Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Jun Jing
- Department of AnesthesiologyMaanshan People's HospitalMaanshanAnhuiP. R. China
| | - Shu‐Ren Huang
- Department of Anesthesiologythe Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Gao‐Lin Qiu
- Department of Anesthesiologythe First Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Xiao‐Qiong Xia
- Department of Anesthesiologythe Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Yue‐Ming Zhang
- Department of Neurology (Sleep Disorders)the Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
| | - Yuan‐Hai Li
- Department of Anesthesiologythe Affiliated Chaohu Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
- Department of Anesthesiologythe First Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiP. R. China
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Zuo Y, Xie J, Zhang X, Thirupathi A, Liu X, Zhang D, Zhang J, Shi Z. Sevoflurane causes cognitive impairment by inducing iron deficiency and inhibiting the proliferation of neural precursor cells in infant mice. CNS Neurosci Ther 2024; 30:e14612. [PMID: 38334030 PMCID: PMC10853893 DOI: 10.1111/cns.14612] [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: 11/08/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 02/10/2024] Open
Abstract
AIMS Numerous studies on animals have shown that exposure to general anesthetics in infant stage may cause neurocognitive impairment. However, the exact mechanism is not clear. The dysfunction of iron metabolism can cause neurodevelopmental disorders. Therefore, we investigated the effect of iron metabolism disorder induced by sevoflurane (Sev) on cognitive function and the proliferation of neural precursor cells (NPCs) and neural stem cells (NSCs) in infant mice. METHODS C57BL/6 mice of postnatal day 14 and neural stem cells NE4C were treated with 2% Sev for 6 h. We used the Morris water maze (MWM) to test the cognitive function of infant mice. The proliferation of NPCs was measured using bromodeoxyuridine (BrdU) label and their markers Ki67 and Pax6 in infant brain tissues 12 h after anesthesia. Meanwhile, we used immunohistochemical stain, immunofluorescence assay, western blot, and flow cytometer to evaluate the myelinogenesis, iron levels, and cell proliferation in cortex and hippocampus or in NE4C cells. RESULTS The results showed that Sev significantly caused cognitive deficiency in infant mice. Further, we found that Sev inhibited oligodendrocytes proliferation and myelinogenesis by decreasing MBP and CC-1 expression and iron levels. Meanwhile, Sev also induced the iron deficiency in neurons and NSCs by downregulating FtH and FtL expression and upregulating the TfR1 expression in the cortex and hippocampus, which dramatically suppressed the proliferation of NSCs and NPCs as indicated by decreasing the colocalization of Pax6+ and BrdU+ cells, and caused the decrease in the number of neurons. Interestingly, iron supplementation before anesthesia significantly improved iron deficiency in cortex and hippocampus and cognitive deficiency induced by Sev in infant mice. Iron therapy inhibited the decrease of MBP expression, iron levels in neurons and oligodendrocytes, and DNA synthesis of Pax6+ cells in hippocampus induced by Sev. Meanwhile, the number of neurons was partially recovered in hippocampus. CONCLUSION The results from the present study demonstrated that Sev-induced iron deficiency might be a new mechanism of cognitive impairment caused by inhaled anesthetics in infant mice. Iron supplementation before anesthesia is an effective strategy to prevent cognitive impairment caused by Sev in infants.
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Affiliation(s)
- Yong Zuo
- Laboratory of Molecular Iron Metabolism, College of Life ScienceHebei Normal UniversityShijiazhuangHebei ProvinceChina
| | - Jinhong Xie
- Laboratory of Molecular Iron Metabolism, College of Life ScienceHebei Normal UniversityShijiazhuangHebei ProvinceChina
| | - Xue Zhang
- Laboratory of Molecular Iron Metabolism, College of Life ScienceHebei Normal UniversityShijiazhuangHebei ProvinceChina
| | | | - Xiaopeng Liu
- The Second Affiliated Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Di Zhang
- Laboratory of Molecular Iron Metabolism, College of Life ScienceHebei Normal UniversityShijiazhuangHebei ProvinceChina
| | - Jianhua Zhang
- Laboratory of Molecular Iron Metabolism, College of Life ScienceHebei Normal UniversityShijiazhuangHebei ProvinceChina
| | - Zhenhua Shi
- Laboratory of Molecular Iron Metabolism, College of Life ScienceHebei Normal UniversityShijiazhuangHebei ProvinceChina
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Miao M, Han Y, Wang Y, Wang J, Zhu R, Yang Y, Fu N, Li N, Sun M, Zhang J. Dysregulation of iron homeostasis and ferroptosis in sevoflurane and isoflurane associated perioperative neurocognitive disorders. CNS Neurosci Ther 2024; 30:e14553. [PMID: 38334231 PMCID: PMC10853900 DOI: 10.1111/cns.14553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 11/06/2023] [Accepted: 11/22/2023] [Indexed: 02/10/2024] Open
Abstract
In recent years, sevoflurane and isoflurane are the most popular anesthetics in general anesthesia for their safe, rapid onset, and well tolerant. Nevertheless, many studies reported their neurotoxicity among pediatric and aged populations. This effect is usually manifested as cognitive impairment such as perioperative neurocognitive disorders. The wide application of sevoflurane and isoflurane during general anesthesia makes their safety a major health concern. Evidence indicates that iron dyshomeostasis and ferroptosis may establish a role in neurotoxicity of sevoflurane and isoflurane. However, the mechanisms of sevoflurane- and isoflurane-induced neuronal injury were not fully understood, which poses a barrier to the treatment of its neurotoxicity. We, therefore, reviewed the current knowledge on mechanisms of iron dyshomeostasis and ferroptosis and aimed to promote a better understanding of their roles in sevoflurane- and isoflurane-induced neurotoxicity.
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Affiliation(s)
- Mengrong Miao
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Yaqian Han
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Yangyang Wang
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Jie Wang
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Ruilou Zhu
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Yitian Yang
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Ningning Fu
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Ningning Li
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Mingyang Sun
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
| | - Jiaqiang Zhang
- Department of Anesthesiology and Perioperative medicinePeople's Hospital of Zhengzhou University, Henan Provincial People's Hospital, People's Hospital of Henan UniversityZhengzhouHenan ProvinceChina
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Li S, Gao X, Zheng Y, Yang Y, Gao J, Geng D, Guo L, Ma T, Hao Y, Wei B, Huang L, Wei Y, Xia B, Luo Z, Huang J. Hydralazine represses Fpn ubiquitination to rescue injured neurons via competitive binding to UBA52. J Pharm Anal 2024; 14:86-99. [PMID: 38352945 PMCID: PMC10859533 DOI: 10.1016/j.jpha.2023.08.006] [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: 05/07/2023] [Revised: 07/24/2023] [Accepted: 08/08/2023] [Indexed: 02/16/2024] Open
Abstract
A major impedance to neuronal regeneration after peripheral nerve injury (PNI) is the activation of various programmed cell death mechanisms in the dorsal root ganglion. Ferroptosis is a form of programmed cell death distinguished by imbalance in iron and thiol metabolism, leading to lethal lipid peroxidation. However, the molecular mechanisms of ferroptosis in the context of PNI and nerve regeneration remain unclear. Ferroportin (Fpn), the only known mammalian nonheme iron export protein, plays a pivotal part in inhibiting ferroptosis by maintaining intracellular iron homeostasis. Here, we explored in vitro and in vivo the involvement of Fpn in neuronal ferroptosis. We first delineated that reactive oxygen species at the injury site induces neuronal ferroptosis by increasing intracellular iron via accelerated UBA52-driven ubiquitination and degradation of Fpn, and stimulation of lipid peroxidation. Early administration of the potent arterial vasodilator, hydralazine (HYD), decreases the ubiquitination of Fpn after PNI by binding to UBA52, leading to suppression of neuronal cell death and significant acceleration of axon regeneration and motor function recovery. HYD targeting of ferroptosis is a promising strategy for clinical management of PNI.
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Affiliation(s)
| | | | | | - Yujie Yang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Jianbo Gao
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Dan Geng
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Lingli Guo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Teng Ma
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Yiming Hao
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Bin Wei
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Liangliang Huang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Yitao Wei
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Bing Xia
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhuojing Luo
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Jinghui Huang
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
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Liu J, Miao M, Wei F. Angelicin Alleviates Maternal Isoflurane Exposure-Induced Offspring Cognitive Defects Through the Carbonic Anhydrase 4/Aquaporin-4 Pathway. Mol Biotechnol 2024; 66:34-43. [PMID: 36997697 DOI: 10.1007/s12033-023-00723-0] [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: 10/26/2022] [Accepted: 03/13/2023] [Indexed: 04/03/2023]
Abstract
An increasing number of studies reveal the deleterious effects of isoflurane (Iso) exposure during pregnancy on offspring cognition. However, no effective therapeutic strategy for Iso-induced deleterious effects has been well developed. Angelicin exerts an anti-inflammatory effect on neurons and glial cells. This study investigated the roles and mechanism of action of angelicin in Iso-induced neurotoxicity in vitro and in vivo. After exposing C57BL/6 J mice on embryonic day 15 (E15) to Iso for 3 and 6 h, respectively, neonatal mice on embryonic day 18 (E18) displayed obvious anesthetic neurotoxicity, which was revealed by the elevation of cerebral inflammatory factors and blood-brain barrier (BBB) permeability and cognitive dysfunction in mice. Angelicin treatment could not only significantly reduce the Iso-induced embryonic inflammation and BBB disruption but also improve the cognitive dysfunction of offspring mice. Iso exposure resulted in an increase of carbonic anhydrase (CA) 4 and aquaporin-4 (AQP4) expression at both mRNA and protein levels in vascular endothelial cells and mouse brain tissue collected from neonatal mice on E18. Remarkably, the Iso-induced upregulation of CA4 and AQP4 expression could be partially reversed by angelicin treatment. Moreover, GSK1016790A, an AQP4 agonist, was used to confirm the role of AQP4 in the protective effect of angelicin. Results showed that GSK1016790A abolished the therapeutic effect of angelicin on Iso-induced inflammation and BBB disruption in the embryonic brain and on the cognitive function of offspring mice. In conclusion, angelicin may serve as a potential therapeutic for Iso-induced neurotoxicity in neonatal mice by regulating the CA4/AQP4 pathway.
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Affiliation(s)
- Jingying Liu
- Department of Obstetrical, Yantaishan Hospital, Yantai, 264000, Shandong, China
| | - Meijuan Miao
- Department of Anesthesiology, Feicheng People's Hospital, Feicheng, 271600, Shandong, China
| | - Fujiang Wei
- Department of Anesthesiology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China.
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Selke S, Winter M, Finger S, Roeher K, Neppert J, Harth V. A straightforward method for determination of the sevoflurane metabolite hexafluoroisopropanol in urinary occupational medical samples by headspace-gas chromatography mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2023; 1231:123923. [PMID: 37984163 DOI: 10.1016/j.jchromb.2023.123923] [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: 05/22/2023] [Revised: 11/03/2023] [Accepted: 11/04/2023] [Indexed: 11/22/2023]
Abstract
Biological monitoring of the unmodified sevoflurane and its metabolite hexafluoroisopropanol (HFIP) in urine samples was proposed to determine the individual exposure levels of the medical staff. In this study, a method for simultaneous determination of both compounds in urine using static headspace-gas chromatography-mass spectrometry (HS-GC-MS) was developed. The method is linear over a broad concentration range from 1 to 1000 µg/L (r2 > 0.999) and shows high precision. Limits of quantification (LOQ) are 0.6 µg/L for sevoflurane and 3 µg/L for HFIP, representing an excellent sensitivity without the necessity of analyte enrichment. The method was successfully applied in a German pilot-study to monitor both compounds in samples from medical personnel working in operating theatres. Urinary concentrations of HFIP ranged between < LOQ and 145 µg/L, while sevoflurane was below the LOD in all samples.
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Affiliation(s)
- S Selke
- Institute for Occupational and Maritime Medicine (ZfAM), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.
| | - M Winter
- Institute for Occupational and Maritime Medicine (ZfAM), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - S Finger
- Institute for Occupational and Maritime Medicine (ZfAM), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
| | - K Roeher
- University Medical Center Hamburg-Eppendorf (UKE), Department of Anesthesiology, Hamburg, Germany
| | - J Neppert
- University Medical Center Hamburg-Eppendorf (UKE), Department of Anesthesiology, Hamburg, Germany
| | - V Harth
- Institute for Occupational and Maritime Medicine (ZfAM), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany
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10
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Wu Z, Yu W, Song Y, Zhao P. General anaesthesia, the developing brain, and cerebral white matter alterations: a narrative review. Br J Anaesth 2023; 131:1022-1029. [PMID: 37833128 DOI: 10.1016/j.bja.2023.09.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 10/15/2023] Open
Abstract
The potential neurotoxic impact of anaesthetic agents has been the subject of sustained debate and continuing research. White matter, which comprises more than half of the brain volume and largely consists of myelinated axonal bundles, is critical for communication between diverse brain regions and for supporting neurobehavioural function. Evidence points to a correlation between exposure to anaesthesia and white matter alterations, which might underpin the ensuing cognitive and behavioural abnormalities. This review summarises the neuropathological and neuroimaging findings related to anaesthesia-induced white matter alterations in the developing brain. Future research is required to understand the effects of anaesthesia exposure on white matter development.
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Affiliation(s)
- Ziyi Wu
- Department of Anaesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Weiwei Yu
- Department of Anaesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanhong Song
- Department of Anaesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ping Zhao
- Department of Anaesthesiology, Shengjing Hospital of China Medical University, Shenyang, China.
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11
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Wu Q, Ren Q, Meng J, Gao WJ, Chang YZ. Brain Iron Homeostasis and Mental Disorders. Antioxidants (Basel) 2023; 12:1997. [PMID: 38001850 PMCID: PMC10669508 DOI: 10.3390/antiox12111997] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 10/30/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
Iron plays an essential role in various physiological processes. A disruption in iron homeostasis can lead to severe consequences, including impaired neurodevelopment, neurodegenerative disorders, stroke, and cancer. Interestingly, the link between mental health disorders and iron homeostasis has not received significant attention. Therefore, our understanding of iron metabolism in the context of psychological diseases is incomplete. In this review, we aim to discuss the pathologies and potential mechanisms that relate to iron homeostasis in associated mental disorders. We propose the hypothesis that maintaining brain iron homeostasis can support neuronal physiological functions by impacting key enzymatic activities during neurotransmission, redox balance, and myelination. In conclusion, our review highlights the importance of investigating the relationship between trace element nutrition and the pathological process of mental disorders, focusing on iron. This nutritional perspective can offer valuable insights for the clinical treatment of mental disorders.
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Affiliation(s)
- Qiong Wu
- Hebei Key Laboratory of Chinese Medicine Research on Cardio-Cerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang 050200, China;
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, The Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, No. 20 Nan’erhuan Eastern Road, Shijiazhuang 050024, China; (Q.R.); (J.M.)
| | - Qiuyang Ren
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, The Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, No. 20 Nan’erhuan Eastern Road, Shijiazhuang 050024, China; (Q.R.); (J.M.)
| | - Jingsi Meng
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, The Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, No. 20 Nan’erhuan Eastern Road, Shijiazhuang 050024, China; (Q.R.); (J.M.)
| | - Wei-Juan Gao
- Hebei Key Laboratory of Chinese Medicine Research on Cardio-Cerebrovascular Disease, Hebei University of Chinese Medicine, Shijiazhuang 050200, China;
| | - Yan-Zhong Chang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, The Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Sciences, Hebei Normal University, No. 20 Nan’erhuan Eastern Road, Shijiazhuang 050024, China; (Q.R.); (J.M.)
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12
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Zhang X, Zuo Y, Zhang J, Zhang D, Naeem M, Chang Y, Shi Z. Sevoflurane inhibited reproductive function in male mice by reducing oxidative phosphorylation through inducing iron deficiency. Front Cell Dev Biol 2023; 11:1184632. [PMID: 37346174 PMCID: PMC10279888 DOI: 10.3389/fcell.2023.1184632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 05/25/2023] [Indexed: 06/23/2023] Open
Abstract
Sevoflurane (Sev) is one of the commonly used inhalation anesthetic chemicals in clinics. It has great impact on spermatogenesis and fertilization in male animals. The underlying mechanism remains largely unexplored. Based on our previous research, we hypothesized that Sev induced iron metabolism disturbance in the testis and epididymis and inhibited the spermatogenesis. In this study, two-month-old C57BL/6 male mice were treated with 3% Sev for 6 h, and their fertility (including sperm concentration, sperm mobility, and the number of offspring) was evaluated. Mice testis, epididymis, and sperm were harvested and subjected to Western blot analysis and immunofluorescence analysis. Iron levels were reflected by the gene expression of iron metabolism-related proteins (including ferritin, TfR1, and FpN1) and ICP-MS and Perl's iron staining. Electron transport and oxidative phosphorylation levels were measured by Oxygraph-2k and ATP contents. The activity of ribonucleotide reductase was evaluated by assay kit. DNA synthesis status in testis and/or epididymis was marked with BrdU. Cell proliferation was evaluated by double immunofluorescence staining of specific protein marker expression. Our results revealed that the mice exposed to Sev showed damaged testicular and epididymis structure and significantly reduced the sperm concentration, sperm motility, and fertility. Sev decreases the iron levels through down-regulating the expression of H-ferritin, L-ferritin, and FpN1, and up-regulating the expression of TfR1 in the testis and epididymis. Iron levels also significantly reduced in germ cells which decrease the number of germ cells, including sperm, Sertoli cells, and primary spermatocyte. Iron deficiency not only decreases electron transport, oxidative phosphorylation level, and ATP production but also suppresses the activity of ribonucleotide reductase and the expression of Ki67, DDX4, GATA1, and SCP3, indicating that Sev affects the spermatogenesis and development. Meanwhile, Sev impaired the blood-testis barrier by decreasing the ZO1 expression in the testis and epididymis. The damage effect induced by Sev can be significantly ameliorated by iron supplementation. In conclusion, our study illustrates a new mechanism by which Sev inhibits spermatogenesis and fertility through an oxidative phosphorylation pathway due to iron deficiency of epididymis and testis or sperm. Furthermore, the damaging effects could be ameliorated by iron supplementation.
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Affiliation(s)
| | | | | | | | | | | | - Zhenhua Shi
- *Correspondence: Jianhua Zhang, ; Zhenhua Shi,
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13
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Wang Y, Li H, Zhao Y, Qin F, Wang L, Jiang L, Wang X, Chen R, He Y, Wei Q, Li S, Chen Y, Xiao Y, Dai Y, Bu Q, Zhao Y, Tian J, Wang H, Cen X. Neonatal exposure to sevoflurane induces adolescent neurobehavioral dysfunction by interfering with hippocampal glycerophoslipid metabolism in rats. Cereb Cortex 2023; 33:1955-1971. [PMID: 35584785 DOI: 10.1093/cercor/bhac185] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 11/12/2022] Open
Abstract
Sevoflurane exposure in the neonatal period causes long-term developmental neuropsychological dysfunction, including memory impairment and anxiety-like behaviors. However, the molecular mechanisms underlying such effects have not been fully elucidated. In this study, we investigated the effect of neonatal exposure to sevoflurane on neurobehavioral profiles in adolescent rats, and applied an integrated approach of lipidomics and proteomics to investigate the molecular network implicated in neurobehavioral dysfunction. We found that neonatal exposure to sevoflurane caused cognitive impairment and social behavior deficits in adolescent rats. Lipidomics analyses revealed that sevoflurane significantly remodeled hippocampal lipid metabolism, including lysophatidylcholine (LPC) metabolism, phospholipid carbon chain length and carbon chain saturation. Through a combined proteomics analysis, we found that neonatal exposure to sevoflurane significantly downregulated the expression of lysophosphatidylcholine acyltransferase 1 (LPCAT1), a key enzyme in the regulation of phospholipid metabolism, in the hippocampus of adolescent rats. Importantly, hippocampal LPCAT1 overexpression restored the dysregulated glycerophospholipid (GP) metabolism and alleviated the learning and memory deficits caused by sevoflurane. Collectively, our evidence that neonatal exposure to sevoflurane downregulates LPCAT1 expression and dysregulates GP metabolism in the hippocampus, which may contribute to the neurobehavioral dysfunction in the adolescent rats.
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Affiliation(s)
- Yonghai Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation Yantai University, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, #30 Qingquan Road, Laishan District, Yantai 264005, China
| | - Hongchun Li
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Ying Zhao
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Feng Qin
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Liang Wang
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Linhong Jiang
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Xiaojie Wang
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Rong Chen
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Yuman He
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Qinfan Wei
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Shu Li
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Yuanyuan Chen
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Yuzhou Xiao
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Yanping Dai
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Qian Bu
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Yinglan Zhao
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
| | - Jingwei Tian
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation Yantai University, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, #30 Qingquan Road, Laishan District, Yantai 264005, China
| | - Hongbo Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation Yantai University, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, #30 Qingquan Road, Laishan District, Yantai 264005, China
| | - Xiaobo Cen
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, #1 Keyuan Road 4, Gaopeng Street, High-tech Development Zone, Chengdu 610041, China
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14
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Bleeser T, Brenders A, Hubble TR, Van de Velde M, Deprest J, Rex S, Devroe S. Preclinical evidence for anaesthesia-induced neurotoxicity. Best Pract Res Clin Anaesthesiol 2023. [DOI: 10.1016/j.bpa.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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15
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Niu Y, Yan J, Jiang H. Anesthesia and developing brain: What have we learned from recent studies. Front Mol Neurosci 2022; 15:1017578. [PMID: 36479527 PMCID: PMC9720124 DOI: 10.3389/fnmol.2022.1017578] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/27/2022] [Indexed: 11/08/2023] Open
Abstract
Anesthesia is unavoidable in surgical procedures. However, whether the general anesthetics are neurotoxic to immature brains remains undefined. Neurodevelopmental impairment induced by anesthesia has been a critical health issue and topic of concern. This review summarizes recent progress made in clinical and preclinical studies to provide useful suggestions and potential therapeutic targets for the protection of the immature brain. On the one hand, clinical researchers continue the debate about the effect of single and multiple exposures to anesthesia on developing brains. On the other hand, preclinical researchers focus on exploring the mechanisms of neurotoxic effects of general anesthesia on immature brains and seeking novel solutions. Rodent models have always been used in preclinical studies, but it is still unclear whether the mechanisms observed in rodent models have clinical relevance. Compared with these models, non-human primates (NHPs) are more genetically similar to humans. However, few research institutions in this area can afford to use NHP models in their studies. One way to address both problems is by combining single-cell sequencing technologies to screen differential gene expression in NHPs and perform in vivo validation in rodents. The mechanism of anesthesia-induced neurotoxicity still requires further elucidation in primates.
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Affiliation(s)
| | - Jia Yan
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong Jiang
- Department of Anesthesiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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16
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Machado-Junior PA, de Souza ABF, Castro TDF, Perucci LO, Talvani A, Cangussú SD, Bezerra FS. The deleterious impact of exposure to different inhaled anesthetics is time dependent. Life Sci 2022; 309:121004. [PMID: 36170891 DOI: 10.1016/j.lfs.2022.121004] [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: 08/02/2022] [Revised: 09/13/2022] [Accepted: 09/22/2022] [Indexed: 11/19/2022]
Abstract
In this study, the effects of exposure to isoflurane, sevoflurane and desflurane on the oxidative response and inflammation at different times was analyzed in the lungs of adult C57BL/6 mice. 120 animals were divided into 3 groups (n = 40): Isoflurane (ISO), Sevoflurane (SEV) and Desflurane (DES) and exposed to these anesthetics for 1 h (n = 10), 2 h (n = 10) and 3 h (n = 10), at a minimum alveolar concentration (MAC) equal to 1. The control group (CG) (n = 10) was exposed to ambient air. 24 h after the experimental protocol, the animals were euthanized and the bronchoalveolar lavage fluid (BALF), blood and lung tissue samples were collected. In the BALF, animals exposed to isoflurane for 2 h and 3 h showed a greater influx of leukocytes, especially macrophages compared to the CG. The ISO3h had lower leukocyte counts in the peripheral blood compared to CG, ISO1h and ISO2h. There was an increase in CCL-2 levels in the ISO3h compared to the CG. Superoxide dismutase activity was higher in ISO1h compared to CG. The activity of catalase was higher in the ISO1h and ISO2h compared to the CG. The lipid peroxidation, as well as carbonylated protein were higher in the ISO3h compared to the CG (p < 0.05). Similar results were observed in the exposure of SEV and DES compared to inflammation and redox imbalance in different periods. This study demonstrated that time is a determinant to promote a local and systemic inflammatory response to different inhalational anesthetics in a healthy murine model.
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Affiliation(s)
- Pedro Alves Machado-Junior
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Centre of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil
| | - Ana Beatriz Farias de Souza
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Centre of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil
| | - Thalles de Freitas Castro
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Centre of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil
| | - Luiza Oliveira Perucci
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Institute of Physics and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil
| | - André Talvani
- Laboratory of Immunobiology of Inflammation, Department of Biological Sciences, Institute of Physics and Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil
| | - Silvia Dantas Cangussú
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Centre of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil
| | - Frank Silva Bezerra
- Laboratory of Experimental Pathophysiology, Department of Biological Sciences and Centre of Research in Biological Sciences, Federal University of Ouro Preto (UFOP), Ouro Preto 35400-000, Brazil.
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17
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Ferroptosis is involved in regulating perioperative neurocognitive disorders: emerging perspectives. J Neuroinflammation 2022; 19:219. [PMID: 36068571 PMCID: PMC9450301 DOI: 10.1186/s12974-022-02570-3] [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: 06/09/2022] [Accepted: 08/09/2022] [Indexed: 11/10/2022] Open
Abstract
Since the twenty-first century, the development of technological advances in anesthesia and surgery has brought benefits to human health. However, the adverse neurological effects of perioperative-related factors (e.g., surgical trauma, anesthesia, etc.) as stressors cannot be ignored as well. The nervous system appears to be more "fragile" and vulnerable to damage in developing and aging individuals. Ferroptosis is a novel form of programmed cell death proposed in 2012. In recent years, the regulation of ferroptosis to treat cancer, immune system disorders, and neurodegenerative diseases have seen an unprecedented surge of interest. The association of ferroptosis with perioperative neurocognitive disorders has also received much attention. Cognitive impairment can not only affect the individual's quality of life, but also impose a burden on the family and society. Therefore, the search for effective preventive and therapeutic methods to alleviate cognitive impairment caused by perioperative-related factors is a challenge that needs to be urgently addressed. In our review, we first briefly describe the connection between iron accumulation in neurons and impairment of brain function during development and aging. It is followed by a review of the pathways of ferroptosis, mainly including iron metabolism, amino acid metabolism, and lipid metabolism pathway. Furthermore, we analyze the connection between ferroptosis and perioperative-related factors. The surgery itself, general anesthetic drugs, and many other relevant factors in the perioperative period may affect neuronal iron homeostasis. Finally, we summarize the experimental evidence for ameliorating developmental and degenerative neurotoxicity by modulating ferroptosis. The suppression of ferroptosis seems to provide the possibility to prevent and improve perioperative neurocognitive impairment.
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18
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Fan Z, Liang L, Ma R, Xie R, Zhao Y, Zhang M, Guo B, Zeng T, He D, Zhao X, Zhang H. Maternal sevoflurane exposure disrupts oligodendrocyte myelination of the postnatal hippocampus and induces cognitive and motor impairments in offspring. Biochem Biophys Res Commun 2022; 614:175-182. [DOI: 10.1016/j.bbrc.2022.05.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/11/2022] [Indexed: 11/02/2022]
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19
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Fu N, Zhu R, Zeng S, Li N, Zhang J. Effect of Anesthesia on Oligodendrocyte Development in the Brain. Front Syst Neurosci 2022; 16:848362. [PMID: 35664684 PMCID: PMC9158484 DOI: 10.3389/fnsys.2022.848362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 04/28/2022] [Indexed: 11/13/2022] Open
Abstract
Oligodendrocytes (OLs) participate in the formation of myelin, promoting the propagation of action potentials, and disruption of their proliferation and differentiation leads to central nervous system (CNS) damage. As surgical techniques have advanced, there is an increasing number of children who undergo multiple procedures early in life, and recent experiments have demonstrated effects on brain development after a single or multiple anesthetics. An increasing number of clinical studies showing the effects of anesthetic drugs on the development of the nervous system may mainly reside in the connections between neurons, where myelin development will receive more research attention. In this article, we review the relationship between anesthesia exposure and the brain and OLs, provide new insights into the development of the relationship between anesthesia exposure and OLs, and provide a theoretical basis for clinical prevention of neurodevelopmental risks of general anesthesia drugs.
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Zhao D, Zhang M, Yang L, Zeng M. GPR68 Improves Nerve Damage and Myelination in an Immature Rat Model Induced by Sevoflurane Anesthesia by Activating cAMP/CREB to Mediate BDNF. ACS Chem Neurosci 2022; 13:423-431. [PMID: 35025202 DOI: 10.1021/acschemneuro.1c00830] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Ovarian cancer G-protein-coupled receptor 1 (OGR1, also known as GPR68) is a member of proton-sensing G-protein-coupled receptors, involved in cardiovascular physiology, tumor biology, and asthma, and exerts a neuroprotective effect against brain ischemia. The effects of GPR68 on anesthesia-induced nerve damage and myelination were investigated in this study. First, 2-day old postnatal rats were exposed to 4.9% sevoflurane for 2 h. Data from hematoxylin and eosin staining and Nissl staining showed that sevoflurane induced pathological changes in the hippocampus with a reduced number of neurons. GPR68 was downregulated in the hippocampus of sevoflurane-induced rats. Second, sevoflurane-induced rats were injected with adeno-associated virus (AAV)-mediated overexpression of GPR68, and overexpression of GPR68 ameliorated sevoflurane-induced pathological changes, enhanced the number of neurons, and improved the learning and memory function. Moreover, overexpression of GPR68 increased the number of BrdU-positive and Olig2-positive cells and enhanced protein expression of Olig2 in sevoflurane-induced rats. Third, the number of myelin basic protein (MBP) positive cells and protein expression of MBP in sevoflurane-induced rats were also enhanced by injection with AAV-GPR68. Overexpression of GPR68 attenuated sevoflurane-induced neuronal apoptosis and oxidative stress in rats. Lastly, overexpression of GPR68 upregulated protein expression of the brain-derived neurotrophic factor (BDNF) by increasing cAMP and phosphorylated cAMP response element-binding protein (CREB). In conclusion, GPR68 alleviated sevoflurane-induced nerve damage and myelination through BDNF-mediated activation of the cAMP/CREB pathway.
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Affiliation(s)
- Dan Zhao
- Department of Anesthesiology, Chengdu University of Traditional Chinese Medicine Hospital, Chengdu, Sichuan 610032, China
| | - Minli Zhang
- Department of Anesthesiology, Chengdu University of Traditional Chinese Medicine Hospital, Chengdu, Sichuan 610032, China
| | - Lingling Yang
- Department of Anesthesiology, Chengdu University of Traditional Chinese Medicine Hospital, Chengdu, Sichuan 610032, China
| | - Mingquan Zeng
- Department of Critical Care Medicine, Public Health Clinical Center of Chengdu, Chengdu, Sichuan 610000, China
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21
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Sun M, Xie Z, Zhang J, Leng Y. Mechanistic insight into sevoflurane-associated developmental neurotoxicity. Cell Biol Toxicol 2022; 38:927-943. [PMID: 34766256 PMCID: PMC9750936 DOI: 10.1007/s10565-021-09677-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Accepted: 10/21/2021] [Indexed: 02/06/2023]
Abstract
With the development of technology, more infants receive general anesthesia for surgery, other interventions, or clinical examination at an early stage after birth. However, whether general anesthetics can affect the function and structure of the developing infant brain remains an important, complex, and controversial issue. Sevoflurane is the most-used anesthetic in infants, but this drug is potentially neurotoxic. Short or single exposure to sevoflurane has a weak effect on cognitive function, while long or repeated exposure to general anesthetics may cause cognitive dysfunction. This review focuses on the mechanisms by which sevoflurane exposure during development may induce long-lasting undesirable effects on the brain. We review neural cell death, neural cell damage, impaired assembly and plasticity of neural circuits, tau phosphorylation, and neuroendocrine effects as important mechanisms for sevoflurane-induced developmental neurotoxicity. More advanced technologies and methods should be applied to determine the underlying mechanism(s) and guide prevention and treatment of sevoflurane-induced neurotoxicity. 1. We discuss the mechanisms underlying sevoflurane-induced developmental neurotoxicity from five perspectives: neural cell death, neural cell damage, assembly and plasticity of neural circuits, tau phosphorylation, and neuroendocrine effects.
2. Tau phosphorylation, IL-6, and mitochondrial dysfunction could interact with each other to cause a nerve damage loop.
3. miRNAs and lncRNAs are associated with sevoflurane-induced neurotoxicity.
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Affiliation(s)
- Mingyang Sun
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, Gansu People’s Republic of China 730000 ,Department of Anesthesiology and Perioperative Medicine, Center for Clinical Single Cell Biomedicine, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan People’s Republic of China 450003
| | - Zhongcong Xie
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA USA
| | - Jiaqiang Zhang
- Department of Anesthesiology and Perioperative Medicine, Center for Clinical Single Cell Biomedicine, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, Henan People’s Republic of China 450003
| | - Yufang Leng
- Day Surgery Center, The First Hospital of Lanzhou University, Lanzhou, Gansu People’s Republic of China 730000
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22
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Liang L, Zeng T, Zhao Y, Lu R, Guo B, Xie R, Tang W, Zhang L, Mao Z, Yang X, Wu S, Wang Y, Zhang H. Melatonin pretreatment alleviates the long-term synaptic toxicity and dysmyelination induced by neonatal Sevoflurane exposure via MT1 receptor-mediated Wnt signaling modulation. J Pineal Res 2021; 71:e12771. [PMID: 34585785 PMCID: PMC9285571 DOI: 10.1111/jpi.12771] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/10/2021] [Accepted: 09/26/2021] [Indexed: 12/14/2022]
Abstract
Sevoflurane (Sev) is one of the most widely used pediatric anesthetics. The major concern of neonatal repeated application of Sev is its potential long-term impairment of cognition and learning/memory, for which there still lacks effective treatment. At the cellular level, Sev exerts toxic effects in multiple aspects, making it difficult for effective interference. Melatonin is a pineal hormone regulated by and feedbacks to biological rhythm at physiological condition. Recent studies have revealed significant neuroprotective effects of exogenous melatonin or its agonists under various pathological conditions. Whether melatonin could prevent the long-term toxicity of Sev remains elusive. Here, we report that neonatal repeated Sev exposure up-regulated MT1 receptor in hippocampal neurons and oligodendrocytes. Pretreatment with melatonin significantly alleviated Sev-induced synaptic deficiency, dysmyelination, and long-term learning impairment. Both MT1-shRNA and MT1 knockout effectively blocked the protective effects of melatonin on synaptic development, myelination, and behavior performance. Interestingly, long-lasting suppression of Wnt signaling, instead of cAMP/PKA signaling, was observed in hippocampal neurons and oligodendrocytes after neonatal Sev exposure. Pharmacologically activating Wnt signaling rescued both the long-term synaptic deficits and dysmyelination induced by Sev. Further analysis showed that MT1 receptor co-expressed well with β-catenin and Axin2 and bound to β-catenin by its C-terminal. Melatonin pretreatment effectively rescued Sev-induced Wnt suppression. Wnt signaling inhibitor XAV939 significantly compromised the protective effects of melatonin. Taken together, our data demonstrated a beneficial effect of melatonin pretreatment on the long-term synaptic impairment and dysmyelination induced by neonatal Sev exposure, and a novel MT1 receptor-mediated interaction between melatonin and canonical Wnt signaling, indicating that melatonin may be clinically applied for improving the safety of pediatric Sev anesthesia.
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Affiliation(s)
- Lirong Liang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Tian Zeng
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Youyi Zhao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Rui Lu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Baolin Guo
- Department of Neurobiology and Institute of NeurosciencesSchool of Basic MedicineFourth Military Medical UniversityXi’anChina
| | - Rougang Xie
- Department of Neurobiology and Institute of NeurosciencesSchool of Basic MedicineFourth Military Medical UniversityXi’anChina
| | - Wenjing Tang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Li Zhang
- Department of AnatomyInstitute of Basic Medical ScienceXi’an Medical UniversityXi’anChina
| | - Zirui Mao
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Xinyu Yang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
| | - Shengxi Wu
- Department of Neurobiology and Institute of NeurosciencesSchool of Basic MedicineFourth Military Medical UniversityXi’anChina
| | - Yazhou Wang
- Department of Neurobiology and Institute of NeurosciencesSchool of Basic MedicineFourth Military Medical UniversityXi’anChina
| | - Hui Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering ResearchDepartment of AnethesiologyCenter for Dental Materials and Advanced ManufactureSchool of StomatologyFourth Military Medical UniversityXi’anChina
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23
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Ge X, Zuo Y, Xie J, Li X, Li Y, Thirupathi A, Yu P, Gao G, Zhou C, Chang Y, Shi Z. A new mechanism of POCD caused by sevoflurane in mice: cognitive impairment induced by cross-dysfunction of iron and glucose metabolism. Aging (Albany NY) 2021; 13:22375-22389. [PMID: 34547719 PMCID: PMC8507282 DOI: 10.18632/aging.203544] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/13/2021] [Indexed: 12/16/2022]
Abstract
Sevoflurane (Sev) is a commonly used anesthetic in hospitals that can cause neurotoxicity. Postoperative cognitive dysfunction (POCD) is a common clinical problem induced by some anesthetics. However, the exact mechanism of neurotoxicity induced by Sev is unclear. Here we studied a new mechanism of POCD induced by Sev. We treated 15-month-old mice with 2% Sev for 6 hours, and we had found that Sev causes POCD. Using isobaric tags for relative and absolute quantitation (iTRAQ), we found that the transporter and the metabolism of carbohydrates and inorganic ions were involved in the cognitive impairment induced by Sev. Using synchrotron radiation micro-X-ray fluorescence (μ-XRF), we showed that Sev caused the iron overload in the brain of 15-month-old mice. Subsequently, excessive iron led to oxidative stress and impaired mitochondrial function that further led to glucose metabolism disorder and reduced ATP production by regulating the expression of key enzyme genes or proteins including G6Pase, Pck1, and Cs. Meanwhile, Sev also inhibited the oxygen consumption rate and glucose absorption by downregulating the expression of glucose transporter 1 in cerebral vascular endothelial cells. The cross-dysfunction of iron and glucose metabolism caused the apoptosis in the cortex and hippocampus through Bcl2/Bax pathway. In conclusion, the data here showed a new mechanism that Sev caused apoptosis by cross-dysregulation of iron and glucose metabolism and induced energy stress in mice. Maintaining iron and glucose metabolism homeostasis may play an important role in cognitive impairment induced by Sev.
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Affiliation(s)
- Xing Ge
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Yong Zuo
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Jinhong Xie
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Xincheng Li
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Yan Li
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Anand Thirupathi
- Faculty of Sports Science, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Peng Yu
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Guofen Gao
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Changhao Zhou
- The First Hospital of Hebei Medical University, Shijiazhuang 050000, Hebei Province, China
| | - Yanzhong Chang
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Zhenhua Shi
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
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24
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Wu W, Zhang X, Zhou J, Yang H, Chen J, Zhao L, Zhong J, Lin WJ, Wang Z. Clemastine Ameliorates Perioperative Neurocognitive Disorder in Aged Mice Caused by Anesthesia and Surgery. Front Pharmacol 2021; 12:738590. [PMID: 34497527 PMCID: PMC8419266 DOI: 10.3389/fphar.2021.738590] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/10/2021] [Indexed: 12/11/2022] Open
Abstract
Perioperative neurocognitive disorder (PND) leads to progressive deterioration of cognitive function, especially in aged patients. Demyelination is closely associated with cognitive dysfunction. However, the relationship between PND and demyelination remains unclear. Here we showed that demyelination was related to the pathogenesis of PND. Clemastine, an antihistamine with potency in remyelination, was predicted to have a potential therapeutic effect on PND by next-generation sequencing and bioinformatics in our previous study. In the present study, it was given at 10 mg/kg per day for 2 weeks to evaluate the effects on PND in aged mice. We found that clemastine ameliorated PND and reduced the expression levels of inflammatory factors such as tumor necrosis factor alpha (TNF-α) and interleukin-1 beta (IL-1β). Further investigation suggested clemastine increased the expression of oligodendrocyte transcription factor 2 (OLIG2) and myelin basic protein (MBP) to enhance remyelination by inhibiting the overactivation of the WNT/β-catenin pathway. At the same time, the expression of post-synaptic density protein 95 (PSD95, or DLG4), brain-derived neurotrophic factor (BDNF), synaptosomal-associated protein 25 (SNAP25) and neuronal nuclei (NEUN) were also improved. Our results suggested that clemastine might be a therapy for PND caused by anesthetic and surgical factors in aged patients.
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Affiliation(s)
- Wensi Wu
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Xiaojun Zhang
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Jiaxin Zhou
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Hongmei Yang
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Junjun Chen
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Le Zhao
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Junying Zhong
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
| | - Wei-Jye Lin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Medical Research Center of Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhi Wang
- Department of Anesthesiology, Sun Yat-Sen Memorial Hospital, Guangzhou, China
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25
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Ferritinophagy-Mediated Ferroptosis Involved in Paraquat-Induced Neurotoxicity of Dopaminergic Neurons: Implication for Neurotoxicity in PD. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9961628. [PMID: 34394837 PMCID: PMC8355964 DOI: 10.1155/2021/9961628] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/30/2021] [Accepted: 06/07/2021] [Indexed: 01/21/2023]
Abstract
Parkinson's disease (PD) is a progressive nervous system disorder. Until now, the molecular mechanism of its occurrence is not fully understood. Paraquat (PQ) was identified as a neurotoxicant and is linked to increased PD risk and PD-like neuropathology. Ferroptosis is recognized as a new form of regulated cell death. Here, we revealed a new underlying mechanism by which ferritinophagy-mediated ferroptosis is involved in PD induced by PQ. The effect of PQ on movement injury in mice was investigated by the bar fatigue and pole-climbing test. SH-SY5Y human neuroblastoma cells were used to evaluate the mechanism of ferroptosis. Our results showed that PQ induced movement injury by causing the decrease in tyrosine hydroxylase in mice. In vitro, PQ significantly caused the iron accumulation in cytoplasm and mitochondria through ferritinophagy pathway induced by NCOA4. Iron overload initiated lipid peroxidation through 12Lox, further inducing ferroptosis by producing lipid ROS. PQ downregulated SLC7A11 and GPX4 expression and upregulated Cox2 expression significantly, which were important markers in ferroptosis. Fer-1, an inhibitor of ferroptosis, could significantly ameliorate the ferroptosis induced by PQ. Meanwhile, Bcl2, Bax, and p-38 were involved in apoptosis induced by PQ. In conclusion, ferritinophagy-mediated ferroptosis pathway played an important role in PD occurrence. Bcl2/Bax and P-p38/p38 pathways mediated the cross-talk between ferroptosis and apoptosis induced by PQ. These data further demonstrated the complexity of PD occurrence. The inhibition of the ferroptosis and apoptosis together may be a new strategy for the prevention of neurotoxicity or PD in the future.
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26
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Cui FH, Li J, Li KZ, Xie YG, Zhao XL. Effects of sevoflurane exposure during different stages of pregnancy on the brain development of rat offspring. J Anesth 2021; 35:654-662. [PMID: 34279702 PMCID: PMC8460505 DOI: 10.1007/s00540-021-02972-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 07/08/2021] [Indexed: 01/01/2023]
Abstract
Objective This study explored the effects of sevoflurane exposure during different stages of pregnancy on the brain development of offspring. Methods Thirty-six pregnant SD rats were randomly divided into 4 groups: control, sevoflurane exposure in early (S1) pregnancy, sevoflurane exposure in middle (S2) pregnancy, and sevoflurane exposure in late (S3) pregnancy. After natural birth, the learning and memory capacity of offspring rats was analyzed using the Morris water maze experiment. The hippocampi of offspring rats were collected. The levels of interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α in the hippocampus were measured by ELISA. Additionally, the Nissl bodies in the hippocampus were analyzed using Nissl staining. Immunohistochemistry was used to examine the expression of BDNF and CPEB2 in the hippocampus of offspring. Proteins related to the NR4A1/NF-κB pathway were analyzed using western blotting. Results The memory and learning capacity of offspring rats was significantly reduced in the S1 and S2 groups compared to the control group (p < 0.05), while there was no obvious difference between the control and S3 groups (p > 0.05). The level of IL-1β was significantly increased (p < 0.05) in the S1 group compared with the control group. Sevoflurane anesthesia received in early and middle pregnancy could significantly affect the formation of Nissl bodies in the hippocampi of offspring rats. In addition, the expression of BDNF and CPEB2 in the hippocampi of offspring rats was greatly decreased in the S1 group compared with the control group (p < 0.05). The expression of NR4A1 in the hippocampi of rat offspring was significantly decreased in the S1 and S2 groups compared with the control group (p < 0.05). The expression of proteins related to the NF-κB pathway was increased in the S1 group compared to the control group (p < 0.05). Conclusions The neurotoxic effect of maternal sevoflurane anesthesia on the brain development of offspring is higher when the exposure occurs in early pregnancy than in late pregnancy, and its mechanism might involve the NR4A1/NF-κB pathway to increase the secretion of inflammatory cytokines.
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Affiliation(s)
- Feng-He Cui
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, No. 20 Yuhuangdingdong Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Jie Li
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, No. 20 Yuhuangdingdong Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Ke-Zhong Li
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, No. 20 Yuhuangdingdong Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Yong-Gang Xie
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, No. 20 Yuhuangdingdong Road, Zhifu District, Yantai, 264000, Shandong, China.
| | - Xiao-Ling Zhao
- Department of Anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, No. 20 Yuhuangdingdong Road, Zhifu District, Yantai, 264000, Shandong, China.
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27
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Wang HLV, Forestier S, Corces VG. Exposure to sevoflurane results in changes of transcription factor occupancy in sperm and inheritance of autism. Biol Reprod 2021; 105:705-719. [PMID: 33982067 DOI: 10.1093/biolre/ioab097] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 05/03/2021] [Accepted: 05/07/2021] [Indexed: 11/13/2022] Open
Abstract
One in 54 children in the U.S. is diagnosed with Autism Spectrum Disorder (ASD). De novo germline and somatic mutations cannot account for all cases of ASD, suggesting that epigenetic alterations triggered by environmental exposures may be responsible for a subset of ASD cases. Human and animal studies have shown that exposure of the developing brain to general anesthetic (GA) agents can trigger neurodegeneration and neurobehavioral abnormalities but the effects of general anesthetics on the germ line have not been explored in detail. We exposed pregnant mice to sevoflurane during the time of embryonic development when the germ cells undergo epigenetic reprogramming and found that more than 38% of the directly exposed F1 animals exhibit impairments in anxiety and social interactions. Strikingly, 44-47% of the F2 and F3 animals, which were not directly exposed to sevoflurane, show the same behavioral problems. We performed ATAC-seq and identified more than 1200 differentially accessible sites in the sperm of F1 animals, 69 of which are also present in the sperm of F2 animals. These sites are located in regulatory regions of genes strongly associated with ASD, including Arid1b, Ntrk2, and Stmn2. These findings suggest that epimutations caused by exposing germ cells to sevoflurane can lead to ASD in the offspring, and this effect can be transmitted through the male germline inter and trans-generationally.
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Affiliation(s)
- Hsiao-Lin V Wang
- Department of Human Genetics, Emory University School of Medicine, 615 Michael St, Atlanta, GA 30322, USA
| | - Samantha Forestier
- Department of Human Genetics, Emory University School of Medicine, 615 Michael St, Atlanta, GA 30322, USA
| | - Victor G Corces
- Department of Human Genetics, Emory University School of Medicine, 615 Michael St, Atlanta, GA 30322, USA
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28
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Wang M, Zuo Y, Li X, Li Y, Thirupathi A, Yu P, Gao G, Zhou C, Chang Y, Shi Z. Effect of sevoflurane on iron homeostasis and toxicity in the brain of mice. Brain Res 2021; 1757:147328. [PMID: 33539795 DOI: 10.1016/j.brainres.2021.147328] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 01/08/2021] [Accepted: 01/22/2021] [Indexed: 01/02/2023]
Abstract
Sevoflurane (Sev), a commonly used volatile anesthetic, could induce nerve damage and cognitive deficiency. Oxidative stress induced by iron overload promotes nerve damage and cell apoptosis in the brain. This study revealed a new toxic mechanism of Sev to the brain occurred through the dysfunction of iron metabolism. Twelve-month-old C57BL/6 mice were randomly assigned to the following three groups: control group; 2% Sev (6 h) group; and Sev plus iron deficiency group. Iron levels and iron metabolism-related proteins and apoptosis-related factors in hippocampus and cortex tissues were detected by using synchrotron radiation micro-X-ray fluorescence (μ-XRF) and western blotting. Our results showed that a decline in cognitive function was observed in mice treated with Sev. Sev significantly induced iron accumulation through upregulating ferritin and downregulating transferrin receptor 1 which involved in ferroportin1 (Fpn1)/hepcidin pathway and increasing reactive oxygen species (ROS) and malondialdehyde (MDA) content of hippocampus and cortex. Sev aggravated BACE1 expression and Aβ accumulation. Changes in the ratio of Bcl2/Bax and Tau/p-Tau intensified the cell apoptosis in hippocampus and cortex tissues. Interestingly, the cognitive deficiency and neurotoxicity induced by Sev could be ameliorated significantly by feeding a low-iron diet to mice prior to anesthesia. The data uncovered a new lesion mechanism of Sev from the role of iron metabolism. This study also suggested that the reduction in iron levels could protect the brain against neurological damage induced by Sev.
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Affiliation(s)
- Meiyue Wang
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Yong Zuo
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Xincheng Li
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Yan Li
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Anand Thirupathi
- Faculty of Sports Science, Ningbo University, Ningbo 315211, China
| | - Peng Yu
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Guofen Gao
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Changhao Zhou
- First Hospital of Hebei Medical University, Shijiazhuang 050030, Hebei Province, China
| | - Yanzhong Chang
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China
| | - Zhenhua Shi
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang 050024, Hebei Province, China.
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29
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Zuo Y, Chang Y, Thirupathi A, Zhou C, Shi Z. Prenatal sevoflurane exposure: Effects of iron metabolic dysfunction on offspring cognition and potential mechanism. Int J Dev Neurosci 2020; 81:1-9. [PMID: 33259670 DOI: 10.1002/jdn.10080] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 12/14/2022] Open
Abstract
For decades, the neurotoxicity caused by anesthetics in mammalian brain development has gained increasing attention. Exposure to anesthetics leads to neurotoxicity and apoptosis of nerve cells, which in turn induces cognitive dysfunction. Although most of the data came from animal studies, general anesthetics have been shown to have adverse effects on cognitive function in infants and young children in recent years. This concern has led to a number of retrospective studies that observed an association between general anesthesia in pregnant women and neurobehavioral problems in fetuses or offspring. Every year, many pregnant women undergo non-obstetric anesthesia due to various reasons such as traffic accidents, fetal interventions, acute appendicitis, symptomatic cholelithiasis, and trauma. A matter of concern for these pregnant women is whether anesthesia has a detrimental effect on fetal brain development in the womb and whether the fetus has cognitive impairment after birth. In humans, the association of anesthetic exposure in infants with the long-term impairment of neurologic functions has been reported in several retrospective clinical studies. Recently, we have found that sevoflurane anesthesia during pregnancy in mice-induced cognitive impairment in the offspring by causing iron deficiency and inhibiting myelinogenesis. Sevoflurane is a commonly used general anesthetic in the hospitals, which can induce neurotoxicity and cause cognitive impairment in fetuses, infants, children, and adults. However, the exact mechanism of sevoflurane-induced damage to the central nervous system (CNS) is not fully understood. Based on our recent results, this paper reviewed the effects of sevoflurane on cognitive impairment and pathological changes such as neurogenesis, neuronal apoptosis, and iron metabolism dysfunction in the offspring.
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Affiliation(s)
- Yong Zuo
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | - Yanzhong Chang
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang, China
| | | | - Changhao Zhou
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhenhua Shi
- Laboratory of Molecular Iron Metabolism, College of Life Science, Hebei Normal University, Shijiazhuang, China
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