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Lin K, Peng F, He K, Qian Z, Mei X, Su Z, Wujimaiti Y, Xia X, Zhang T. Research progress on intestinal microbiota regulating cognitive function through the gut-brain axis. Neurol Sci 2024:10.1007/s10072-024-07525-5. [PMID: 38632176 DOI: 10.1007/s10072-024-07525-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/05/2024] [Indexed: 04/19/2024]
Abstract
The intestinal microbiota community is a fundamental component of the human body and plays a significant regulatory role in maintaining overall health and in the management disease states.The intestinal microbiota-gut-brain axis represents a vital connection in the cognitive regulation of the central nervous system by the intestinal microbiota.The impact of intestinal microbiota on cognitive function is hypothesized to manifest through both the nervous system and circulatory system. Imbalances in intestinal microbiota during the perioperative period could potentially contribute to perioperative neurocognitive dysfunction. This article concentrates on a review of existing literature to explore the potential influence of intestinal microbiota on brain and cognitive functions via the nervous and circulatory systems.Additionally, it summarizes recent findings on the impact of perioperative intestinal dysbacteriosis on perioperative neurocognitive dysfunction and suggests novel approaches for prevention and treatment of this condition.
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Affiliation(s)
- Kaijie Lin
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China
| | - Feng Peng
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China
- The First Affiliated Hospital Of Chengdu Medical College, Chengdu, Sichuan, China
| | - Kunyang He
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China
| | - Zhengyu Qian
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China
| | - Xuan Mei
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China
| | - Zhikun Su
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China
| | | | - Xun Xia
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China.
- The First Affiliated Hospital Of Chengdu Medical College, Chengdu, Sichuan, China.
| | - Tianyao Zhang
- School of Clinical Medicine, Chengdu Medical College, Chengdu, Sichuan, China.
- The First Affiliated Hospital Of Chengdu Medical College, Chengdu, Sichuan, China.
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Wu B, Guo Y, Min S, Xiong Q, Zou L. Postoperative cognitive dysfunction in elderly patients with colorectal cancer: A randomized controlled study comparing goal-directed and conventional fluid therapy. Open Med (Wars) 2024; 19:20240930. [PMID: 38584828 PMCID: PMC10997005 DOI: 10.1515/med-2024-0930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 02/07/2024] [Accepted: 02/08/2024] [Indexed: 04/09/2024] Open
Abstract
To investigate the impact of goal-directed fluid therapy (GDFT) on postoperative cognitive dysfunction (POCD) in elderly patients with colorectal cancer, we conducted a randomized controlled trial. Eighty elderly patients who underwent elective laparoscopic radical resection of colorectal cancer were randomly assigned to either the GDFT group or the conventional fluid therapy group. The primary outcome was the incidence of POCD during the initial 7 postoperative days, while secondary outcomes included inflammatory marker levels such as interleukin-6 (IL-6) and S100β protein, hemodynamics, level of lactic acid, postoperative functional recovery, and complications. Among 88 randomized patients, 80 were evaluable for the primary outcome. The incidence of POCD was significantly lower in the GDFT group (15.0%) compared to the conventional fluid therapy group (30.0%), with the highest occurrence observed on day 3 postoperatively in both groups (P < 0.05). IL-6 and S100β concentrations were consistently lower in the GDFT group than in the conventional fluid therapy group at the corresponding time points (P < 0.05). The GDFT group exhibited more stable perioperative hemodynamics and lower lactate levels (P < 0.05). Moreover, patients in the GDFT group exhibited better postoperative functional recovery indicators and a lower incidence of postoperative complications (P < 0.05). In summary, GDFT appears to reduce the incidence of early POCD, accelerate postoperative recovery, and enhance overall prognosis.
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Affiliation(s)
- Bin Wu
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People’s Republic of China
| | - Yuanyuan Guo
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People’s Republic of China
| | - Su Min
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Youyi Road 1#, Yuzhong District, Chongqing 400016, People’s Republic of China
| | - Qiuju Xiong
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People’s Republic of China
| | - Lei Zou
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People’s Republic of China
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Zhao W, Zou W. Effects of electroacupuncture on postoperative cognitive dysfunction and its underlying mechanisms: a literature review of rodent studies. Front Aging Neurosci 2024; 16:1384075. [PMID: 38596595 PMCID: PMC11002135 DOI: 10.3389/fnagi.2024.1384075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/13/2024] [Indexed: 04/11/2024] Open
Abstract
With the aging of the population, the health of the elderly has become increasingly important. Postoperative cognitive dysfunction (POCD) is a common neurological complication in elderly patients following general anesthesia or surgery. It is characterized by cognitive decline that may persist for weeks, months, or even longer. Electroacupuncture (EA), a novel therapy that combines physical nerve stimulation with acupuncture treatment from traditional Chinese medicine, holds potential as a therapeutic intervention for preventing and treating POCD, particularly in elderly patients. Although the beneficial effects of EA on POCD have been explored in preclinical and clinical studies, the reliability of EA is limited by methodological shortcomings, and the underlying mechanisms remain largely unexplored. Therefore, we have synthesized existing evidence and proposed potential biological mechanisms underlying the effects of EA on neuroinflammation, oxidative stress, autophagy, the microbiota-gut-brain axis, and epigenetic modification. This review summarizes recent advances in EA and POCD, provides a theoretical foundation, explores potential molecular mechanisms for the prevention and treatment of POCD, and offers a basis for conducting relevant clinical trials.
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Affiliation(s)
- Wenbo Zhao
- Heilongjiang University of Chinese Medicine, Harbin, China
| | - Wei Zou
- The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
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Han M, Du Y, Li J, Li Y, Han S, Li C. Effect of remote ischemic preconditioning on postoperative cognitive dysfunction in adult patients with general anesthesia: a meta-analysis. J Cardiothorac Surg 2024; 19:68. [PMID: 38321534 PMCID: PMC10848366 DOI: 10.1186/s13019-024-02520-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 01/28/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Remote ischemic preconditioning (RIPC) is proven to have neuroprotective protective effects. Nevertheless, the impact of RIPC on postoperative cognitive dysfunction (POCD) in patients undergoing general anesthesia is controversial. This meta-analysis of randomized controlled trials (RCTs) aimed to assess the effect of RIPC on POCD in adults after general anesthesia. METHODS Relevant literature was obtained by searching Embase, PubMed, Web of Science, Cochrane Library, Wanfang, and China National Knowledge Infrastructure (CNKI) databases in July 2022. RCTs were included to assess the influences of RIPC on POCD in adults following general anesthesia. Two investigators independently performed literature screening, data extraction, and quality assessment based on the inclusion and exclusion criteria. The incidence of POCD, operation time, and hospital stay were analyzed by Review manager5.4 software. RESULTS Thirteen RCTs with 1122 participants were selected for this meta-analysis. Compared to the control group, RIPC decreased the incidence of POCD (OR = 0.50, 95% CI 0.31-0.82), as well as reduced the duration of hospitalization (MD = - 0.98, 95% CI - 1.69 to - 0.27), but did not prolong operative time (MD = - 2.65, 95% CI - 7.68 to 2.37). CONCLUSION RIPC reduced the incidence of POCD in adult patients after general anesthesia and accelerated their discharge.
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Affiliation(s)
- Mengnan Han
- Department of Anesthesiology, Hebei General Hospital, No 348 West Heping Road, Shijiazhuang, 050051, China
- Graduate Faculty, Hebei North University, Zhangjiakou, China
| | - Yanru Du
- Department of Anesthesiology, Hebei General Hospital, No 348 West Heping Road, Shijiazhuang, 050051, China
| | - Jianli Li
- Department of Anesthesiology, Hebei General Hospital, No 348 West Heping Road, Shijiazhuang, 050051, China.
| | - Yi Li
- Department of Anesthesiology, Hebei General Hospital, No 348 West Heping Road, Shijiazhuang, 050051, China
| | - Shuang Han
- Department of Anesthesiology, Hebei General Hospital, No 348 West Heping Road, Shijiazhuang, 050051, China
| | - Chong Li
- Department of Anesthesiology, Hebei General Hospital, No 348 West Heping Road, Shijiazhuang, 050051, China
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Lu J, Zong Y, Tao X, Dai H, Song J, Zhou H. Anesthesia/surgery-induced learning and memory dysfunction by inhibiting mitophagy-mediated NLRP3 inflammasome inactivation in aged mice. Exp Brain Res 2024; 242:417-427. [PMID: 38145993 PMCID: PMC10805997 DOI: 10.1007/s00221-023-06724-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 10/15/2023] [Indexed: 12/27/2023]
Abstract
Postoperative cognitive dysfunction (POCD) is a common postoperative complication, not only affects the quality of life of the elderly and increases the mortality rate, but also brings a greater burden to the family and society. Previous studies demonstrated that Nod-like receptor protein 3 (NLRP3) inflammasome participates in various inflammatory and neurodegenerative diseases. However, possible mitophagy mechanism in anesthesia/surgery-elicited NLRP3 inflammasome activation remains to be elucidated. Hence, this study clarified whether mitophagy dysfunction is related to anesthesia/surgery-elicited NLRP3 inflammasome activation. POCD model was established in aged C57BL/6 J mice by tibial fracture fixation under isoflurane anesthesia. Morris Water Maze (MWM) was used to evaluate learning and memory abilities. We found that in vitro experiments, lipopolysaccharide (LPS) significantly facilitated NLRP3 inflammasome activation and mitophagy inhibition in BV2 cells. Rapamycin restored mitophagy and improved mitochondrial function, and inhibited NLRP3 inflammasome activation induced by LPS. In vivo experiments, anesthesia and surgery caused upregulation of hippocampal NLRP3, caspase recruitment domain (ASC) and interleukin-1β (IL-1 β), and downregulation of microtubule-associated protein light chain 3II (LC3II) and Beclin1 in aged mice. Olaparib inhibited anesthesia/surgery-induced NLRP3, ASC, and IL-1β over-expression in the hippocampus, while upregulated the expression of LC3II and Beclin1. Furthermore, Olaparib improved cognitive impairment in older mice. These results revealed that mitophagy was involved in NLRP3 inflammasome-mediated anesthesia/surgery-induced cognitive deficits in aged mice. Overall, our results suggested that mitophagy was related in NLRP3 inflammasome-induced cognitive deficits after anesthesia and surgery in aged mice. Activating mitophagy may have clinical benefits in the prevention of cognitive impairment induced by anesthesia and surgery in elderly patients.
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Affiliation(s)
- Jian Lu
- Department of Anesthesiology, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province, China
| | - Youming Zong
- Department of Anesthesiology, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province, China
| | - Xiaoyan Tao
- Department of Nursing, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province, China
| | - Hongyu Dai
- Department of Anesthesiology, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province, China
| | - Jiale Song
- Department of Anesthesiology, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province, China
| | - Hongmei Zhou
- Department of Anesthesiology, The Second Hospital of Jiaxing, The Second Affiliated Hospital of Jiaxing University, Jiaxing City, Zhejiang Province, China.
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Wang XX, Dai J, Wang Q, Deng HW, Liu Y, He GF, Guo HJ, Li YL. Intravenous lidocaine improves postoperative cognition in patients undergoing laparoscopic colorectal surgery: a randomized, double-blind, controlled study. BMC Anesthesiol 2023; 23:243. [PMID: 37474933 PMCID: PMC10360258 DOI: 10.1186/s12871-023-02210-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND The risk of postoperative cognitive dysfunction(POCD) in laparoscopic surgery should not be overlooked. Intravenous lidocaine can reduce perioperative inflammatory response in patients undergoing laparoscopic surgery, while the effect of intraoperative intravenous lidocaine on postoperative cognitive function in patients undergoing laparoscopic colorectal cancer surgery has not been well studied. We investigated whether intraoperative lidocaine improves postoperative cognitive function after laparoscopic radical resection for colorectal cancer. METHODS We conducted a prospective, randomized double blinded controlled trial to investigate the effect of intravenous lidocaine on rapid postoperative recovery in patients undergoing laparoscopic radical resection of colorectal cancer. The patients were randomly assigned to receive either intravenous lidocaine or saline. The primary outcome was cognitive dysfunction defined by a decrease from pre- to postoperative ≥ 2 of the Mini-Mental State Examination (MMSE) score, at the 3rd and the 7th postoperative days. Secondary outcomes were the MMSE raw score and parameters of the patients' postoperative recovery such as agitation and length of stay in the post-anaesthesia care unit (PACU), length of hospital stay, markers of inflammation (white blood cell count and CRP), and incidence of complications. RESULTS Seventy-three patients in the lidocaine group and 77 patients in the control group completed the trial. The rate of cognitive dysfunction was lower in the lidocaine group than that in the control group, both at the 3rd (18.57% vs. 63.64% for each group respectively; RR = 0.26, 95%CI = 0.19-0.32; p < 0.0001) and at the 7th postoperative day (12.33% vs. 53.25% for each group respectively; RR = 0.28, 95%CI = 0.22-0.35; P < 0.001). The postoperative MMSE scores were also higher in the lidocaine group than in the control group both at the 3rd (median 25 vs. 24 respectively) and at the 7th postoperative day (26 vs. 24 respectively). Also, patients in the lidocaine group displayed a lower white blood cell count than the control group at the 1st postoperative day (8.5 ± 2.7 vs. 10.4 ± 3.3; p < 0. 001). No differences were evidenced for the other secondary outcomes. CONCLUSIONS Intraoperative intravenous lidocaine can significantly improve postoperative cognitive function in patients undergoing laparoscopic radical resection of colorectal cancer. TRIAL REGISTRATION Chinese Clinical Trial Registry (16/1/2022, registration number: ChiCTR2200055683).
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Affiliation(s)
- Xian-Xue Wang
- Department of Anaesthesiology, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
| | - Jing Dai
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
| | - Qi Wang
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
| | - Hui-Wei Deng
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
| | - Yun Liu
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
| | - Gui-Fan He
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
- Hengyang Medical College, University of South China, Hengyang, 421001, China
| | - Hua-Jing Guo
- Department of Anaesthesiology, The First People's Hospital of Changde City, Changde, 415000, China
| | - Ya-Lan Li
- Department of Anaesthesiology, The First Affiliated Hospital of Jinan University, Guangzhou, 510632, China.
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Jia L, Zhou Y, Ma L, Li W, Chan C, Zhang S, Zhao Y. Inhibition of NLRP3 alleviated chemotherapy-induced cognitive impairment in rats. Neurosci Lett 2023; 793:136975. [PMID: 36427814 DOI: 10.1016/j.neulet.2022.136975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 11/18/2022] [Accepted: 11/19/2022] [Indexed: 11/27/2022]
Abstract
Chemotherapy results in long-term effects on cognitive dysfunction called chemotherapy-induced cognitive impairment (CICI) in cancer survivors. However, little is known about the potential molecular mechanisms of CICI. This study aimed to determine the role and potential underlying mechanisms of the nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) inflammasome in cognitive impairments induced by chemotherapeutic agents commonly used in breast cancer. The cognitive effects of chemotherapy were investigated in a rat model using the cocktail of doxorubicin and cyclophosphamide. The NLRP3 pathway was found to be differentially expressed after chemotherapy by iTRAQ-based proteomic analysis of normal and chemotherapeutic hippocampi. Treatment with the NLRP3 inhibitor MCC950 following chemotherapy significantly reduced cognitive impairment and decreased the expression of NLRP3, caspase-1 and ASC. Chemotherapy led to increased expression of the glial response markers Iba-1 and GFAP and the axonal injury markers NF-L and NF-M, an elevated number of apoptotic cells and enhanced microstructural damage to axons and mitochondria, while MCC950 treatment alleviated the glial response, cell death and axonal injury. The protective effect of MCC950 was related to the NLRP3 pathway and levels of inflammatory cytokines (TNF-α, IL-1β, IL-18, IL-6, IL-4, and IL-10) and oxidative stress-responsive markers (SOD, MDA, CAT and GSH). The results indicate that CICI is associated with NLRP3 pathway-induced oxidative damage and the inflammatory response and provide a potential therapeutic target to treat cognitive impairment after chemotherapy (doxorubicin and cyclophosphamide).
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Guo F, Jia S, Wang Q, Liu Q, Hu M, Wang W, Liu S, Li Q, Lu B, Zheng Y. Which Predictor, SctO2 or SstO2, Is more Sensitive for Postoperative Cognitive Dysfunction in Spine Surgery: A Prospective Observational Study? Orthop Surg 2022; 15:276-285. [PMID: 36394155 PMCID: PMC9837245 DOI: 10.1111/os.13580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 10/07/2022] [Accepted: 10/11/2022] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Patients undergoing spinal surgery in the prone position may experience venous stasis, often resulting in edema in dependent areas of the body, including the head, and increased postoperative cognitive dysfunction (POCD). Not only does POCD present challenges for post-operative care and recovery, it can also cause permanent damage to the patient's brain and increase mortality and social costs. We aimed to clarify the incidence of POCD in patients with hypertension after prone spine surgery and to further determine the association between intraoperative somatic tissue oxygen saturation (SstO2)/cerebral tissue oxygen saturation (SctO2) and POCD. METHODS Patients with hypertension scheduled for open prone spine surgery from January 2020 to April 2021 were included in this single-center, prospective, observational study. SctO2 and SstO2 were monitored by near-infrared spectroscopy continuously throughout the surgery. The primary outcome was POCD assessed using the Mini-Mental Status Examination (MMSE). The association of SstO2 and SctO2 with POCD was evaluated with unadjusted analyses and multivariable logistic regression. RESULTS One hundred and one of 112 identified patients were included, 28 (27.8%) of whom developed POCD. None of the investigated SctO2 indices were predictive of POCD. However, the patients with POCD had greater decreases in intraoperative absolute SstO2 and relative SstO2 than the patients without POCD (P = 0.037, P = 0.036). Moreover, three SstO2 indices were associated with POCD, including a greater absolute SstO2 decrease (P = 0.021), a greater relative SstO2 decrease (P = 0.032), and a drop below 90% of the baseline SstO2 (P = 0.002), independent of ASA III status, preoperative platelets and postoperative sepsis. In addition, there was no correlation between intraoperative SctO2 and intraoperative SstO2 or between their respective absolute declines. CONCLUSION Twenty-eight (27.7%) of 101 patients developed POCD in patients with hypertension undergoing prone spine surgery, and intraoperative SstO2 is associated with POCD, whereas SctO2 shows no association with POCD. This study may initially provide a valuable new approach to the prevention of POCD in this population.
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Affiliation(s)
- Fei Guo
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Shuaiying Jia
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina,Department of AnesthesiologyThe Affiliated Hospital of North Sichuan Medical CollegeNanchongChina
| | - Qiyan Wang
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Qinyu Liu
- Translational Medicine Center, the Second Affiliated HospitalGuangzhou Medical UniversityGuangzhouChina
| | - Mingquan Hu
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Wenzhang Wang
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Shijian Liu
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Qiang Li
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Bin Lu
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
| | - Yeying Zheng
- Department of AnesthesiologyZigong Fourth People's Hospital Affiliated to Southwest Medical UniversityZigongChina
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Li W, Liang J, Li S, Wang L, Xu S, Jiang S, Song M, Meng H, Zhai D, Tang L, Yang Y, Zhang L, Zhang B. Research progress of targeting NLRP3 inflammasome in peripheral nerve injury and pain. Int Immunopharmacol 2022; 110:109026. [DOI: 10.1016/j.intimp.2022.109026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 06/25/2022] [Accepted: 06/30/2022] [Indexed: 01/08/2023]
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Zhang Q, Li Y, Yu J, Yin C, Guo J, Zhao J, Wang Q. TLR3 deletion inhibits programmed necrosis of brain cells in neonatal mice with sevoflurane-induced cognitive dysfunction. Aging (Albany NY) 2022; 14:4714-4727. [PMID: 35666713 PMCID: PMC9217712 DOI: 10.18632/aging.204092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 05/07/2022] [Indexed: 11/25/2022]
Abstract
This research aimed to explore the influence of TLR deletion on sevoflurane-induced postoperative cognitive dysfunction in neonatal mice. Herein, WT and TLR3 KO neonatal mice, each with 24, were randomly divided into control group, sevoflurane group, and TLR3−/−+sevoflurane group. The hippocampal neurons of WT, TLR3 KO and RIP3 KO neonatal mice in C group, SEV group, TLR3−/−+SEV group and RIP3−/−+SEV group were extracted for in vitro experiments. The results revealed the degeneration and necrosis of nerve cells in SEV group. Microscopic findings indicated that nerve cells showed shrinkage and nuclear hyperchromatism, along with lessening or even disappearance of nuclei and enlargement of cell spaces, and apoptotic cells in the brain tissues were evidently increased. Compared with SEV group, TLR3−/−+SEV group displayed reductions in these phenomena. Additionally, SEV group showed the reduced SHP2 expression and the increased expressions of proteins associated with TLR signaling pathway and apoptosis. Furthermore, there were no obvious differences in the expressions of such proteins in hippocampal neurons between RIP3−/−+SEV and TLR3−/−+SEV groups. The results confirmed that inhibiting RIP3 phosphorylation and suppressing TLR3 expressions exerted the same influence on the expressions of these proteins in the hippocampus of neonatal mice with sevoflurane-induced cognitive dysfunction. Based on these, it is speculated that TLR3 influences neonatal mice with sevoflurane-induced cognitive dysfunction probably by regulating RIP3 phosphorylation.
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Affiliation(s)
- Qi Zhang
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China.,Department of Anesthesiology, Children's Hospital of Hebei Province Affiliated to Hebei Medical University, Shijiazhuang 050031, Hebei, China
| | - Yanan Li
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China
| | - Jiaxu Yu
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China
| | - Chunping Yin
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China
| | - Junfei Guo
- Department of Orthopedics, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China
| | - Juan Zhao
- Experimental Teaching Center of Hebei Medical University, Shijiazhuang 050017, Hebei, China
| | - Qiujun Wang
- Department of Anesthesiology, The Third Hospital of Hebei Medical University, Shijiazhuang 050051, Hebei, China
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Jiang J, Huang X, Gao X, Yu S. Vitamin D3 Supplementation Attenuates Surgery-Induced Neuroinflammation and Cognitive Impairment by Regulating NLRP3 Inflammasome in Mice. Mediators Inflamm 2022; 2022:4696415. [PMID: 36880085 DOI: 10.1155/2022/4696415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 12/03/2022] Open
Abstract
Neuroinflammation plays a dominant role in the progression of postoperative cognitive dysfunction (POCD). Vitamin D has been known to have important regulatory functions in inflammation and immune response. The NOD-like receptor protein 3 (NLRP3) is an essential inflammasome in the inflammatory response and could be activated by anesthesia and surgery. In this study, male C57BL/6 mice aged 14-16 months were given VD3 for 14 days straight before having an open tibial fracture surgery. The animals were either sacrificed to obtain the hippocampus or tested in a Morris water maze test. Western blot was employed to estimate the levels of NLRP3, ASC, and caspase-1, immunohistochemistry was used to identify microglial activation, and an enzyme-linked immunosorbent assay was used to measure the expression of IL-18 and IL-1β, while using the corresponding assay kits to assess ROS and MDA levels to reflect the oxidative stress status. We showed that VD3 pretreatment significantly improved surgery-induced memory and cognitive dysfunctions in aged mice, which was linked to the inactivation of the NLRP3 inflammasome and the inhibition of neuroinflammation. This finding provided a novel preventative strategy for clinically reducing postoperative cognitive impairment in elderly surgical patients. This study has some limitations. Gender differences in the effects of VD3 were not considered, and only male mice were used. Additionally, VD3 was given as a preventative measure; however, it is unknown whether it has any therapeutic benefits for POCD mice. This trial is registered with ChiCTR-ROC-17010610.
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Feng X, Zhan F, Luo D, Hu J, Wei G, Hua F, Xu G. LncRNA 4344 promotes NLRP3-related neuroinflammation and cognitive impairment by targeting miR-138-5p. Brain Behav Immun 2021; 98:283-298. [PMID: 34455059 DOI: 10.1016/j.bbi.2021.08.230] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 08/01/2021] [Accepted: 08/21/2021] [Indexed: 12/25/2022] Open
Abstract
OBJECTIVE Cognitive impairment is a common neurological disease of which NLRP3-related neuroinflammation has been demonstrated to be an essential mediator. Previous studies have indicated that long non-coding RNAs (lncRNAs) are critical for the development of neurological disorders. However, the roles and functions of lncRNA 4344 in neuroinflammation during cognitive impairment are unknown and need to be further elucidated. METHODS Lipopolysaccharide (LPS)-induced rat cognitive impairment and rat microglia (RM) cell inflammation models were established in vitro and in vivo. The Morris water maze test was used to evaluate the cognitive behavior of the rats. Gene expression was assessed using real-time quantitative polymerase chain reaction, and protein levels using enzyme-linked immunosorbent assay, or western blot analysis. The targeting relationship between lncRNA 4344, miR-138-5p, and NLRP3 was identified using bioinformatics analysis and a dual-luciferase reporter gene assay. Hematoxylin-Eosin and Nissl stainings, terminal deoxynucleotidyl transferase dUTP nick end labeling, or immunofluorescence staining assays were performed to detect pathological changes, neuronal apoptosis, or positive cells in hippocampal tissues, respectively. RESULTS The expression levels of lncRNA 4344 and NLRP3 were upregulated in the hippocampal tissues of LPS-treated rats and RM cells, and showed a strong positive correlation between each other. LncRNA 4344 overexpression further enhanced the expression of NLRP3 and its downstream genes (caspase-1, IL-1β, and IL-18), as well as neuronal apoptosis in LPS-stimulated RM cells, whereas lncRNA 4344 silencing attenuated the inflammatory injuries. Moreover, miR-138-5p was the direct target of lncRNA 4344 and was downregulated in the RM cell inflammation model. We also found that miR-138-5p directly reduced the expression of NLRP3 and its downstream genes. Subsequently, the results of the animal experiments showed that the lncRNA 4344/miR-138-5p/NLRP3 axis plays an essential role in regulating the cognitive behavior, pathological changes and apoptosis of hippocampal neurons, expression of inflammation-related factors (NLRP3, caspase-1, IL-1β, and IL-18), and microglial activation in LPS-induced cognitive impairment rats. CONCLUSION Our results demonstrated for the first time that lncRNA 4344 regulates NLRP3-related neuroinflammation and cognitive impairment by targeting miR-138-5p, providing a possible target for the treatment of diseases characterized by a cognitive deficit.
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Affiliation(s)
- Xiaojin Feng
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China; Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang 330006, Jiangxi, China; Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang 330006, Jiangxi, China
| | - Fenfang Zhan
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China; Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang 330006, Jiangxi, China
| | - Deqiang Luo
- Department of Intensive Care Unit, The First Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
| | - Jialing Hu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
| | - Gen Wei
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China
| | - Fuzhou Hua
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China; Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang 330006, Jiangxi, China.
| | - Guohai Xu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi, China; Key Laboratory of Anesthesiology of Jiangxi Province, Nanchang 330006, Jiangxi, China.
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Yang X, Wu Z, Yang Y, Zhang C, Lin X, Zhou L, Wang F, Dong L, Zhu Z. Sevoflurane inhalation has a cognitive impairing effect of aging rats involving the regulation of AChE and ChAT. Ibrain 2021; 7:192-199. [PMID: 37786796 PMCID: PMC10529151 DOI: 10.1002/j.2769-2795.2021.tb00083.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/30/2021] [Accepted: 08/20/2021] [Indexed: 10/04/2023]
Abstract
Background Acetylcholinesterase (AChE) and choline acetyltransferase (ChAT) are closely related to the regulation of learning and memory. Nevertheless, whether sevoflurane has influence on cognition through regulating the expression of AChE and ChAT remains unclear. Methods Aging rat model was established by subcutaneously injection of D-galactose for 6 consecutive weeks. To determine the role of AChE and ChAT in sevoflurane-induced cognitive impairment, the Morris water maze (MWM) was used to assess the cognitive and memory function after sevoflurane exposure. Then, the variations of AChE and ChAT was detected by western blotting analysis and quantitative real-time polymerase chain reaction (qRT-PCR) respectively. Results Our result indicated that aging model rats had showed cognition decline at 2 hours and 1week after exposure to sevoflurane. Moreover, the expression of AChE and ChAT enhanced in rats that had inhaled sevoflurane. Interestingly, our study also found that the increase of oxygen concentration had a positive impact on the gene expression of ChAT. Conclusion We have identified that the overexpression of AChE and ChAT improved significantly cognitive function after sevoflurane exposure.
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Affiliation(s)
- Xin‐Xin Yang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Zhen‐Yu Wu
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Yang Yang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Chao Zhang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Xia‐Fei Lin
- Department of AnesthesiologyHainan General HospitalHaikouHainanChina
| | - Lin Zhou
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | - Feng‐Lin Wang
- Department of AnesthesiologyAffiliated Hospital of Zunyi Medical UniversityZunyiGuizhouChina
| | | | - Zhao‐Qiong Zhu
- Liuzhou People's Hospital Affliated to Guangxi Medical UniversityLiuzhouGuangxiChina
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Pan Y, Gao F, Zhao S, Han J, Chen F. Role of the SphK-S1P-S1PRs pathway in invasion of the nervous system by SARS-CoV-2 infection. Clin Exp Pharmacol Physiol 2021; 48:637-650. [PMID: 33565127 PMCID: PMC8014301 DOI: 10.1111/1440-1681.13483] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 01/29/2021] [Accepted: 02/02/2021] [Indexed: 01/08/2023]
Abstract
Global spread of the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) is still ongoing. Before an effective vaccine is available, the development of potential treatments for resultant coronavirus disease 2019 (COVID‐19) is crucial. One of the disease hallmarks is hyper‐inflammatory responses, which usually leads to a severe lung disease. Patients with COVID‐19 also frequently suffer from neurological symptoms such as acute diffuse encephalomyelitis, brain injury and psychiatric complications. The metabolic pathway of sphingosine‐1‐phosphate (S1P) is a dynamic regulator of various cell types and disease processes, including the nervous system. It has been demonstrated that S1P and its metabolic enzymes, regulating neuroinflammation and neurogenesis, exhibit important functions during viral infection. S1P receptor 1 (S1PR1) analogues including AAL‐R and RP‐002 inhibit pathophysiological responses at the early stage of H1N1 virus infection and then play a protective role. Fingolimod (FTY720) is an S1P receptor modulator and is being tested for treating COVID‐19. Our review provides an overview of SARS‐CoV‐2 infection and critical role of the SphK‐S1P‐SIPR pathway in invasion of SARS‐CoV‐2 infection, particularly in the central nervous system (CNS). This may help design therapeutic strategies based on the S1P‐mediated signal transduction, and the adjuvant therapeutic effects of S1P analogues to limit or prevent the interaction between the host and SARS‐CoV‐2, block the spread of the SARS‐CoV‐2, and consequently treat related complications in the CNS.
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Affiliation(s)
- Yuehai Pan
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University, Shangdong, China
| | - Fei Gao
- Department of Hand and Foot Surgery, The Affiliated Hospital of Qingdao University, Shangdong, China
| | - Shuai Zhao
- Department of Anesthesiology, Bonn University, Bonn, Germany
| | - Jinming Han
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Fan Chen
- Department of Neurosurgery, The Affiliated Hospital of Qingdao University, Shangdong, China
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Pan Y, Zhao S, Chen F. Letter to the Editor: "What Are the Long-Term Neurological and Neuropsychiatric Consequences of COVID-19?". World Neurosurg 2020; 144:310-311. [PMID: 33227857 PMCID: PMC7676849 DOI: 10.1016/j.wneu.2020.09.158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Yuehai Pan
- Department of Hand and Foot Surgery, The Affiliated Hospital of QingDao University, Qingdao, China
| | - Shuai Zhao
- Department of Anesthesiology, The First Hospital of Jilin University, Changchun, China
| | - Fan Chen
- Department of Neurosurgery, The Affiliated Hospital of QingDao University, Qingdao, China.
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