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Poddar NK, Agarwal D, Agrawal Y, Wijayasinghe YS, Mukherjee A, Khan S. Deciphering the enigmatic crosstalk between prostate cancer and Alzheimer's disease: A current update on molecular mechanisms and combination therapy. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166524. [PMID: 35985445 DOI: 10.1016/j.bbadis.2022.166524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/05/2022] [Accepted: 08/11/2022] [Indexed: 11/26/2022]
Abstract
Alzheimer's disease (AD) and prostate cancer (PCa) are considered the leading causes of death in elderly people worldwide. Although both these diseases have striking differences in their pathologies, a few underlying mechanisms are similar when cell survival is considered. In the current study, we employed an in-silico approach to decipher the possible role of bacterial proteins in the initiation and progression of AD and PCa. We further analyzed the molecular connections between these two life-threatening diseases. The androgen deprivation therapy used against PCa has been shown to promote castrate resistant PCa as well as AD. In addition, cell signaling pathways, such as Akt, IGF, and Wnt contribute to the progression of both AD and PCa. Besides, various proteins and genes are also common in disease progression. One such similarity is mTOR signaling. mTOR is the common downstream target for many signaling pathways and plays a vital role in both PCa and AD. Targeting mTOR can be a favorable line of treatment for both AD and PCa. However, drug resistance is one of the challenges in effective drug therapy. A few drugs that target mTOR have now become ineffective due to the development of resistance. In that regard, phytochemicals can be a rich source of novel drug candidates as they can act via multiple mechanisms. This review also presents mTOR targeting phytochemicals with promising anti-PCa, anti-AD activities, and approaches to overcome the issues associated with phytochemical-based therapies in clinical trials.
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Affiliation(s)
- Nitesh Kumar Poddar
- Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Jaipur-Ajmer Expressway, Jaipur, Rajasthan 303007, India.
| | - Disha Agarwal
- Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Jaipur-Ajmer Expressway, Jaipur, Rajasthan 303007, India
| | - Yamini Agrawal
- Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Jaipur-Ajmer Expressway, Jaipur, Rajasthan 303007, India
| | | | - Arunima Mukherjee
- Department of Biosciences, Manipal University Jaipur, Dehmi Kalan, Jaipur-Ajmer Expressway, Jaipur, Rajasthan 303007, India
| | - Shahanavaj Khan
- Department of Health Sciences, Novel Global Community Educational Foundation, NSW, Australia; Department of Pharmaceutics, College of Pharmacy, PO Box 2457, King Saud University, Riyadh 11451, Saudi Arabia; Department of Medical Lab Technology, Indian Institute of health and Technology (IIHT), Deoband, 247554 Saharanpur, UP, India.
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Liu L, Zhang X, Wang C, Wu X, Long B. Hypercholesterolemia aggravates sevoflurane-induced cognitive impairment in aged rats by inducing neurological inflammation and apoptosis. J Biochem Mol Toxicol 2022; 36:e23009. [PMID: 35174938 DOI: 10.1002/jbt.23009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/28/2021] [Accepted: 01/04/2022] [Indexed: 12/30/2022]
Abstract
We aimed to explore the effects of hypercholesterolemia on sevoflurane-induced cognitive impairment in aged rats and the underlying mechanism(s). Aged rats were administrated with high-fat diet, sevoflurane, or both. Thereafter, the plasma levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), and high-density lipoprotein (HDL) were evaluated. The Morris water maze task was performed to evaluate the spatial learning and memory ability of rats. Moreover, Nissl and Evans blue staining were conducted to test nerve damage and detect the blood-brain barrier permeability, respectively. The percentage of apoptotic cells was evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling assay. The messenger RNA expression of inflammatory factors and protein expression of microglial activation markers and apoptosis-related proteins were tested by real-time polymerase chain reaction, enzyme-linked immunosorbent assay, or western blot analysis, respectively. High-fat diet induced high levels of TC, TG, and LDL but decreased levels of HDL. However, sevoflurane had no effects on these levels. In contrast, sevoflurane significantly induced the impairment of learning and memory, nerve damage, neuroinflammatory damage, and neuronal apoptosis. Hypercholesterolemia exacerbated the sevoflurane-induced impairment in aged rats. These results suggested that hypercholesterolemia aggravates sevoflurane-induced cognitive impairment in aged rats, possibly by inducing neurological inflammation and apoptosis.
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Affiliation(s)
- Lidan Liu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xin Zhang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Cong Wang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiuying Wu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Bo Long
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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Chen H, Chu H, Jiang Q, Wang C, Tian Y. Irf6 participates in sevoflurane-induced perioperative neurocognitive disorder via modulating M2, but not M1 polarization of microglia. Brain Res Bull 2021; 177:1-11. [PMID: 34536519 DOI: 10.1016/j.brainresbull.2021.09.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 12/31/2022]
Abstract
Perioperative neurocognitive disorder (PND) frequently occurs in elderly patients following anesthesia, and is associated with pro-inflammatory activation of microglia in hippocampus. In this study, sevoflurane, a commonly used inhaled anesthetic in clinic, was used to induce PND-like symptoms in aged SD rats (18-20 months). Data from novel object recognition and Y-maze tests first confirmed that aged SD rats exposed to 2% sevoflurane for 5 h developed cognitive impairment. Microglia preferred to polarizing towards pro-inflammatory M1 subtype (iNOS+Iba-1 +) in rat hippocampus post sevoflurane exposure, but not anti-inflammatory M2 subtype (Arg-1 +Iba-1 +). Microarray data identified interferon regulatory factor 6 (Irf6) as one (Fold change = -2.52, p = 0.006) of the 15 downregulated genes in hippocampus of the rats exposed to sevoflurane. Co-immunofluorescence data further illustrated that sevoflurane decreased Irf6 expression in hippocampal microglia. In vitro, sevoflurane enhanced lipopolysaccharide-induced M1 polarization of BV-2 cells and inhibited interleukin-4 induced M2 polarization. Interestingly, manipulation of Irf6 expression hardly affected M1 polarization. However, Irf6 overexpression further augmented the inhibitory effects on M2 polarization, and its silencing showed opposite effects. In addition, such M2 polarization-promoting effects of Irf6 knockdown may be associated with induction of peroxisome proliferator activated receptor gamma expression. Collectively, these findings suggest that Irf6 downregulation in hippocampal microglia may be a compensatory mechanism against sevoflurane-induced PND in the elderly.
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Affiliation(s)
- Hongzhi Chen
- Department of Anesthesiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Haichao Chu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Qian Jiang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Cong Wang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China
| | - Yue Tian
- Department of Anesthesiology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Shenyang 110004, People's Republic of China.
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Wang CM, Chen WC, Zhang Y, Lin S, He HF. Update on the Mechanism and Treatment of Sevoflurane-Induced Postoperative Cognitive Dysfunction. Front Aging Neurosci 2021; 13:702231. [PMID: 34305576 PMCID: PMC8296910 DOI: 10.3389/fnagi.2021.702231] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/08/2021] [Indexed: 12/14/2022] Open
Abstract
Sevoflurane is one of the most widely used anesthetics for the induction and maintenance of general anesthesia in surgical patients. Sevoflurane treatment may increase the incidence of postoperative cognitive dysfunction (POCD), and patients with POCD exhibit lower cognitive abilities than before the operation. POCD affects the lives of patients and places an additional burden on patients and their families. Understanding the mechanism of sevoflurane-induced POCD may improve prevention and treatment of POCD. In this paper, we review the diagnosis of POCD, introduce animal models of POCD in clinical research, analyze the possible mechanisms of sevoflurane-induced POCD, and summarize advances in treatment for this condition.
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Affiliation(s)
- Cong-Mei Wang
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Wei-Can Chen
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Yan Zhang
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Shu Lin
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China.,Diabetes and Metabolism Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW, Australia.,Centre of Neurological and Metabolic Research, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - He-Fan He
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
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Zhao L, Gong H, Huang H, Tuerhong G, Xia H. Participation of Mind Bomb-2 in Sevoflurane Anesthesia Induces Cognitive Impairment in Aged Mice via Modulating Ferroptosis. ACS Chem Neurosci 2021; 12:2399-2408. [PMID: 34121396 DOI: 10.1021/acschemneuro.1c00131] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Postoperative cognitive dysfunction (POCD) is a complication of the central nervous system (CNS) often occurred after surgery or anesthesia in the elder patients. Mind bomb-2 (MIB2) has been reported to modulate neuronal functions. Here, we aimed to study whether MIB2 exerts roles in the effects of sevoflurane anesthesia on mice hippocampal neurons and function, and how. Aging male C57BL/6 mice were subjected to sevoflurane administration, and primary hippocampal neurons were adopted to study sevoflurane effects in vitro. Western blotting and immunohistochemistry assay were used to study the protein expression of MIB2. CCK-8 assay and propidium iodide (PI) staining were performed to evaluate cell viability and cell death, respectively. Ferroptosis-related indicators malondialdehyde (MDA), glutathione (GSH), and iron levels were checked through indicated ELISA kits. Co-immunoprecipitation was adopted to study the binding effects of MIB2 to GPX4. We found that sevoflurane anesthesia increased MIB2 expression in mice hippocampus tissues and neurons. Knockdown of MIB2 alleviated neuron death and ferroptosis induced by sevoflurane exposure. Downregulated MIB2 enhanced GPX4 stability and reduced its ubiquitination. MIB2 was verified to bind to GPX4. The effects of MIB2 knockdown on the neuron death and ferroptosis can be reversed by further siGPX4 transfection. In vivo results also showed that MIB2 knockdown reduced hippocampal neuron death, ferroptosis, and cognitive impairments in the sevoflurane-exposed mice. Taking all together, downregulation of MIB2 could alleviate the sevoflurane-anesthesia-induced cognitive dysfunction and neuron injury through reducing ferroptosis via GPX4. Our results also provide novel directions for POCD treatment using anti-MIB2-related drugs or strategies.
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Affiliation(s)
- Lili Zhao
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province 330006, China
| | - Haixia Gong
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province 330006, China
| | - Haijin Huang
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province 330006, China
| | - Gulisitan Tuerhong
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province 330006, China
| | - Haimei Xia
- Department of Anesthesiology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province 330006, China
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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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Autophagic Network Analysis of the Dual Effect of Sevoflurane on Neurons Associated with GABARAPL1 and 2. BIOMED RESEARCH INTERNATIONAL 2020; 2020:1587214. [PMID: 32685442 PMCID: PMC7335402 DOI: 10.1155/2020/1587214] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/07/2020] [Accepted: 05/18/2020] [Indexed: 12/22/2022]
Abstract
Background Sevoflurane is commonly used as a general anesthetic in neonates to aged patients. Preconditioning or postconditioning with sevoflurane protects neurons from excitotoxic injury. Conversely, sevoflurane exposure induces neurotoxicity during early or late life. However, little is known about the underlying mechanism of the dual effect of sevoflurane on neurons. Autophagy is believed to control neuronal homeostasis. We hypothesized that autophagy determined the dual effect of sevoflurane on neurons. Methods DTome was used to identify the direct protein target (DPT) of sevoflurane. The STRING database was employed to investigate the proteins associated with the DPTs. Protein-protein interaction was assessed using Cytoscape. WebGestalt was used to analyze gene set enrichment. The linkage between candidate genes and autophagy was identified using GeneCards. Results This study found that 23 essential DPTs of sevoflurane interacted with 77 proteins from the STRING database. GABARAPL1 and 2, both of which are DPT- and autophagy-associated proteins, were significantly expressed in the brain and enriched in GABAergic synapses. Conclusions Taken together, our findings showed that the network of sevoflurane-DPT-GABARAPL1 and 2 is related to the dual effect of sevoflurane on neurons.
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Guo L, Lin F, Dai H, Du X, Yu M, Zhang J, Huang H, Ge W, Tao G, Pan L. Impact of Sevoflurane Versus Propofol Anesthesia on Post-Operative Cognitive Dysfunction in Elderly Cancer Patients: A Double-Blinded Randomized Controlled Trial. Med Sci Monit 2020; 26:e919293. [PMID: 32060257 PMCID: PMC7043336 DOI: 10.12659/msm.919293] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background Research on the clinical outcomes of surgical patients anaesthetized with sevoflurane and the association of sevoflurane with post-operative cognitive dysfunction (POCD) is scarce. We evaluated whether sevoflurane-based anesthesia increased the incidence of POCD and worsened prognosis compared to propofol-based anesthesia in elderly cancer patients. Material/Methods This single-center, prospective, double-blind randomized controlled trial included 234 patients aged 65 to 86 years undergoing tumor resection who received sevoflurane-based (Group S) or propofol-based (Group P) anesthesia during surgery. A series of neuropsychological tests was performed to evaluate cognitive function before surgery and at 7 days and 3 months post-operation, and the results were compared to those of healthy controls. Results At 7 days post-operation there were no significant differences in the incidence of POCD between patients who received sevoflurane-based or propofol-based anesthesia during surgery: Group S was at 29.1% (32 out of 110 patients) versus Group P at 27.3% (30 out of 110), P=0.764. At 3 months, Group S was at 11.3% (12 out of 106 patients) versus Group P at 9.2% (10 out of 109), P=0.604. During the first 2 days post-operation, the QoR-40 global score was significantly lower in Group S compared to Group P [POD 1: P=0.004; POD 2: P=0.001]. There were no significant differences in in-hospital post-operative complications, post-operative length of hospital stay, all-cause mortality at 30 days, and 3 months post-operation, or post-operative quality of life at 3 months between patients in Group S and Group P. Conclusions Sevoflurane-based anesthesia did not increase the incidence of POCD compared to propofol-based anesthesia at 7 days or 3 months post-operation or impact short-term post-operative prognosis.
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Affiliation(s)
- Liang Guo
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Fei Lin
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Huijun Dai
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Xueke Du
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Meigang Yu
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Jinxi Zhang
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Huimei Huang
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Wanyun Ge
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Guanghua Tao
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Linghui Pan
- Department of Anesthesiology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
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Zheng F, Fang P, Chang J, Chen M, Zhong Q, Chen T, Chen C, Zhang Z. Methylene Blue Protects Against Sevoflurane-Induced Cognitive Dysfunction by Suppressing Drp1 deSUMOylation in Aged Mice. Neurochem Res 2020; 45:956-963. [PMID: 32008150 DOI: 10.1007/s11064-020-02976-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 01/16/2020] [Accepted: 01/22/2020] [Indexed: 12/16/2022]
Abstract
Exposure to sevoflurane and other inhalational anesthetics can induce cognitive impairment in elderly patients. Studies have indicated that methylene blue (MB) has beneficial effects on multiple neurodegenerative diseases and the mechanism involves mitochondrial function preservation. However, whether MB can attenuate the cognitive decline induced by sevoflurane in aged mice requires further investigation. Forty-five 18-month-old C57/BL mice were used to establish a model of sevoflurane-induced cognitive impairment in which the mice were exposed to 3% sevoflurane for 2 h. Mice in the MB group were intraperitoneally injected with MB at a dose of 5 mg/kg before sevoflurane inhalation. The Morris water maze test was used to evaluate the learning and memory performances. We also examined changes in mitochondrial morphology as well as the expression and interaction of related proteins in the aged hippocampus. Parkin, BCL2/adenovirus E1B 19 kDa protein-interacting protein 3 (BNIP3), mitochondrial dynamin-related protein 1 (Drp1), small ubiquitin-like modifier (SUMO2/3), SUMO-specific proteases 3 (SENP3), and ubiquitin-like conjugating enzyme 9 expression in the mouse hippocampus was detected by western blotting, and SUMO2/3-Drp1 was examined by coimmunoprecipitation. Exposure to sevoflurane increased SENP3 expression and Drp1 deSUMOylation in the aged hippocampus and resulted in cognitive deficiency. MB attenuated sevoflurane-induced memory loss and mitochondrial fragmentation and decreased Drp1 deSUMOylation in the aged hippocampus. This neuroprotective effect provides a mechanistic explanation for how the SUMOylation status of Drp1 acts as a key switch in the cognitive dysfunction induced by sevoflurane.
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Affiliation(s)
- Feng Zheng
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China
| | - Peng Fang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China
| | - Jing Chang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China
| | - Min Chen
- Department of Geriatrics, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, China
| | - Qi Zhong
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China
| | - Ting Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China
| | - Chang Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China.
| | - Zongze Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 169 Donghu Road, Wuhan, Hubei, 430071, China.
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Zhong J, Xu W. Characterization of DNA hydroxymethylation in the hypothalamus of elderly mice with post-operative cognitive dysfunction. Exp Ther Med 2019; 18:4002-4010. [PMID: 31641381 PMCID: PMC6796353 DOI: 10.3892/etm.2019.8056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 08/13/2019] [Indexed: 01/12/2023] Open
Abstract
Post-operative cognitive dysfunction (POCD) is a common syndrome characterized by perioperative cerebral damage in elderly patients, including cognitive impairment and memory loss. Recent studies have revealed that anesthesia is one of the key causes of POCD. Ubiquitin-like with PHD and ring finger domains 2 (Uhrf2) has been reported to play a crucial role in regulating DNA methylation and hydroxymethylation, which are closely connected with memory building and erasure. However, whether narcotic drugs can affect Uhrf2 to impact on DNA methylation and hydroxymethylation in POCD is poorly understood. In this study, a POCD model was established in elderly mice through sevoflurane treatment, and these mice were found to have compromised levels of global DNA 5'-hydroxymethylcytosine (5hmC) and Uhrf2 in the hippocampus and the amygdaloid nucleus, when compared with non-POCD and control mice. The results of immunoprecipitation and quantitative PCR revealed that 5hmC modification of the promoters of genes associated with neural protection and development, such as glial cell-derived neurotrophic factor, brain derived neurotrophic factor, glucocorticoid receptor and acyl-CoA sythetase short chain family member 2, was reduced in the hippocampus of POCD mice when compared with non-POCD and control mice. Taken together, the findings of the present study suggest that loss of 5hmC, in the hippocampus and the amygdaloid nucleus modulated by Uhrf2 suppression, may result in the learning and memory ability impairment seen in mice with POCD.
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Affiliation(s)
- Jiang Zhong
- Department of Anesthesiology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Wei Xu
- Department of Anesthesiology, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
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Liang R, Ou S, Han Y, Xu J, Zhou S. Plasma amyloid beta level changes in aged mice with cognitive dysfunction following sevoflurane exposure. Exp Gerontol 2019; 129:110737. [PMID: 31521721 DOI: 10.1016/j.exger.2019.110737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 07/05/2019] [Accepted: 09/12/2019] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Previous studies have stated that cognitive impairment induced by anesthetics was associated with amyloid beta (Aβ). However, few researchers have investigated the transport of Aβ inside and outside of the brain. AIM We attempted to probe the effects of sevoflurane on cognitive functions, the plasma Aβ, and transporters of Aβ in aged mice. The receptor for advanced glycation end-products (RAGE) is an Aβ influx protein, and Low-density lipoprotein receptor-related protein-1 (LRP-1) is an Aβ efflux protein. METHODS Aged mice were divided into the control group and the sevoflurane group. The mice were exposed to 100% oxygen or 2.5% sevoflurane for 2 h. The abilities of spatial learning and memory in mice were tested using the Morris water maze. Aβ concentrations of plasma were measured with enzyme-linked immunosorbent assay kits. The RAGE and LRP-1 gene levels in the brain were assessed with quantitative polymerase chain reaction, and the protein levels were determined by western blot analysis. The locations of RAGE in the brain were confirmed via immunofluorescence. RESULTS In the sevoflurane group mice, the escape latency was increased on the 5th day of training, and the time spent in the target quadrant was decreased on the 7th day after anesthesia. Sevoflurane reduced the concentration of plasma Aβ1-40. In addition, sevoflurane increased both gene and protein levels of RAGE in the brain, and increased RAGE proteins co-localized with the hippocampal vascular endothelial cells. CONCLUSION RAGE over-expression in the hippocampal vascular endothelial cells possibly resulted in the excessive transport of the plasma Aβ1-40 into the brain after treatment with sevoflurane, which was associated with sevoflurane-induced cognitive dysfunction in aged mice.
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Affiliation(s)
- Rui Liang
- Department of Anesthesiology, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai 519000, China
| | - Shanshan Ou
- Department of Anesthesiology, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai 519000, China
| | - Yuxiang Han
- Department of Anesthesiology, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai 519000, China
| | - Jie Xu
- Department of Anatomy and Neurobiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China.
| | - Shaopeng Zhou
- Department of Anesthesiology, The Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai 519000, China.
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Liu J, Yang L, Guo X, Jin G, Wang Q, Lv D, Liu J, Chen Q, Song Q, Li B. Sevoflurane suppresses proliferation by upregulating microRNA-203 in breast cancer cells. Mol Med Rep 2018; 18:455-460. [PMID: 29750301 DOI: 10.3892/mmr.2018.8949] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 04/20/2018] [Indexed: 11/05/2022] Open
Abstract
Rapid proliferation is one of the critical characteristics of breast cancer. However, the underlying regulatory mechanism of breast cancer cell proliferation is largely unclear. The present study indicated that sevoflurane, one of inhalational anesthetics, could significantly suppress breast cancer cell proliferation by arresting cell cycle at G1 phase. Notably, the rescue experiment indicated that miR-203 was upregulated by sevoflurane and mediated the function of sevoflurane on suppressing the breast cancer cell proliferation. The present study indicated the function of the sevoflurane/miR-203 signaling pathway on regulating breast cancer cell proliferation. These results provide mechanistic insight into how the sevoflurane/miR-203 signaling pathway supresses proliferation of breast cancer cells, suggesting the sevoflurane/miR-203 pathway may be a potential target in the treatment of breast cancer.
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Affiliation(s)
- Jiaying Liu
- Department of Anesthesiology, The Second Clinical College of Zhengzhou University, Zhengzhou, Henan 450003, P.R. China
| | - Longqiu Yang
- Department of Anesthesiology, Huangshi Central Hospital, Huangshi, Hubei 435000, P.R. China
| | - Xia Guo
- Department of Ophthalmology, Third People's Hospital of Jinan, Jinan, Shandong 250100, P.R. China
| | - Guangli Jin
- Department of Anesthesiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Qimin Wang
- Department of Anesthesiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Dongdong Lv
- Department of Anesthesiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Junli Liu
- Department of Anesthesiology, The Second Clinical College of Zhengzhou University, Zhengzhou, Henan 450003, P.R. China
| | - Qiu Chen
- Department of Anesthesiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Qiong Song
- Department of Anesthesiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
| | - Baolin Li
- Department of Anesthesiology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan 450007, P.R. China
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Maternal Sevoflurane Exposure Causes Abnormal Development of Fetal Prefrontal Cortex and Induces Cognitive Dysfunction in Offspring. Stem Cells Int 2017; 2017:6158468. [PMID: 29098009 PMCID: PMC5643154 DOI: 10.1155/2017/6158468] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 08/12/2017] [Accepted: 08/22/2017] [Indexed: 12/18/2022] Open
Abstract
Maternal sevoflurane exposure during pregnancy is associated with increased risk for behavioral deficits in offspring. Several studies indicated that neurogenesis abnormality may be responsible for the sevoflurane-induced neurotoxicity, but the concrete impact of sevoflurane on fetal brain development remains poorly understood. We aimed to investigate whether maternal sevoflurane exposure caused learning and memory impairment in offspring through inducing abnormal development of the fetal prefrontal cortex (PFC). Pregnant mice at gestational day 15.5 received 2.5% sevoflurane for 6 h. Learning function of the offspring was evaluated with the Morris water maze test at postnatal day 30. Brain tissues of fetal mice were subjected to immunofluorescence staining to assess differentiation, proliferation, and cell cycle dynamics of the fetal PFC. We found that maternal sevoflurane anesthesia impaired learning ability in offspring through inhibiting deep-layer immature neuron output and neuronal progenitor replication. With the assessment of cell cycle dynamics, we established that these effects were mediated through cell cycle arrest in neural progenitors. Our research has provided insights into the cell cycle-related mechanisms by which maternal sevoflurane exposure can induce neurodevelopmental abnormalities and learning dysfunction and appeals people to consider the neurotoxicity of anesthetics when considering the benefits and risks of nonobstetric surgical procedures.
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Ling Y, Li X, Yu L, Liang Q, Lin X, Yang X, Wang H, Zhang Y. Sevoflurane exposure in postnatal rats induced long-term cognitive impairment through upregulating caspase-3/cleaved-poly (ADP-ribose) polymerase pathway. Exp Ther Med 2017; 14:3824-3830. [PMID: 29042986 DOI: 10.3892/etm.2017.5004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 05/16/2017] [Indexed: 01/28/2023] Open
Abstract
The association of anesthetic exposure in infants or young children with the long-term impairment of neurologic functions has been reported previously; however, the underlying mechanisms remain largely unknown. In order to identify dysregulated gene expression underlying long-term cognitive impairment caused by sevoflurane exposure at the postnatal stage, the present study initially performed behavioral tests on adult Wistar rats, which received 3% sevoflurane at postnatal day 7 (P7) for different time course. Subsequently, transcriptome profiling of hippocampal tissues from experimental and control rats was performed. Significant impairment of the working memory was observed in adult rats with sevoflurane exposure for 4-6 h, when compared with the control rats. The results indicated that a total of 264 genes were aberrantly expressed (51 downregulated and 213 upregulated; fold change >2.0; P<0.05; false discovery rate <0.05) in the hippocampus of experimental adult rats compared with those from control rats. Particularly, the expression of caspase-3 gene (CASP3), encoding caspase-3 protein, presented the most significant upregulation, which was further validated by quantitative polymerase chain reaction and immunohistochemical analysis. Further analysis revealed that CASP3 expression level was negatively correlated with the rats' spatial working memory performance, as indicated by the Y-maze test. The level of cleaved-poly (ADP-ribose) polymerase (PARP), a substrate of caspase-3, was also increased in the hippocampus of experimental adult rats. Thus, the present study revealed that upregulation of caspase-3/cleaved-PARP may be involved in long-term cognitive impairment caused by sevoflurane exposure in infants, which may be useful for the clinical prevention of cognitive impairment.
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Affiliation(s)
- Yunzhi Ling
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Anhui, Hefei 233004, P.R. China
| | - Xiaohong Li
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Anhui, Hefei 233004, P.R. China
| | - Li Yu
- Department of Laboratory Medicine, Bengbu Medical College, Anhui, Hefei 233030, P.R. China
| | - Qisheng Liang
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Anhui, Hefei 233004, P.R. China
| | - Xuewu Lin
- Department of Anesthesiology, First Affiliated Hospital of Bengbu Medical College, Anhui, Hefei 233004, P.R. China
| | - Xiaodi Yang
- Department of Parasitology, Bengbu Medical College, Anhui, Hefei 233030, P.R. China
| | - Hongtao Wang
- Department of Immunology, Bengbu Medical College, Anhui, Hefei 233030, P.R. China
| | - Ye Zhang
- Department of Anesthesiology, Second Affiliated Hospital of Anhui Medical University, Anhui, Hefei 230601, P.R. China
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15
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Fang F, Song R, Ling X, Peng M, Xue Z, Cang J. Multiple sevoflurane anesthesia in pregnant mice inhibits neurogenesis of fetal hippocampus via repressing transcription factor Pax6. Life Sci 2017; 175:16-22. [DOI: 10.1016/j.lfs.2017.03.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/24/2017] [Accepted: 03/05/2017] [Indexed: 10/20/2022]
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