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Yu J, Zhang RF, Mao YL. Cerebellar fastigial nucleus electrostimulation attenuates inflammation in a Post-Infarction rat model by activating cholinergic anti-inflammatory pathways. Neurosci Lett 2022; 788:136860. [PMID: 36041546 DOI: 10.1016/j.neulet.2022.136860] [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: 06/06/2022] [Revised: 08/24/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022]
Abstract
There are negative correlations between indices of heart rate variability (HRV) and markers of inflammation. The inflammation plays an important role in myocardial damages after myocardial infarction (MI). Our previous study found that fastigial nucleus electrostimulation (FNS) improved abnormal HRV in a rat model of MI. Whether and how it can reduce inflammation and improve cardiac function after MI and the underlying mechanisms remain unknown. 66 Sprague Dawley rats were randomly divided into 4 groups as follows: i) Sham operation group (Sham); ii) Myocardial infarction group (MI); iii) FNS+MI group (FNS plus MI): left fastigial nucleus electrostimulation; iv) FNL+FNS+MI group (left fastigial nucleus lesion plus FNS plus MI). The serum expressions of acetylcholine (ACh), pro-inflammatory cytokines tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), and anti-inflammatory cytokines IL-10 after FNS were measured using ELISA. Subsequently, the infarct size, the infiltration of inflammatory cells, the fibrotic area, and cardiac function were also evaluated. Additionally, the effects of FNS on the cholinergic anti-inflammatory pathway (CAP)-related proteins expression were determined by Western blot. We found that FNS significantly upregulated ACh and IL-10 expressions in serum, and decreased TNF-α and IL-6 levels. FNS significantly attenuated inflammatory cell infiltration and infarct size, decreased fibrosis, increased left ventricular ejection fraction (LVEF), and reduced mortality. Besides, the levels of p-STAT3/STAT3 and p-NF-κB/NF-κB significantly elevated after MI. FNS down-regulated the expression of p-STAT3/STAT3 and p-NF-κB/NF-κB. The protective effects of FNS were partially reversed by the fastigial nucleus lesion. Our data suggested that FNS can alleviate the inflammation after MI, and its cardiac neuroprotective mechanism may be achieved by increasing vagus tone, releasing ACh, and further activating the CAP via α7nAChR. The precise mechanism remains to be elucidated.
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Affiliation(s)
- Jiang Yu
- Department of Cardiology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, Sichuan, China; Department of Cardiology, The Third Hospital of Mianyang/Sichuan Mental Health Center, Mianyang 621000, Sichuan, China
| | - Run-Feng Zhang
- Department of Cardiology, The Third Hospital of Mianyang/Sichuan Mental Health Center, Mianyang 621000, Sichuan, China.
| | - Yi-Li Mao
- Department of Cardiology, The Third Hospital of Mianyang/Sichuan Mental Health Center, Mianyang 621000, Sichuan, China
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Ma H, Zhai Y, Xu Z, Fan S, Wu X, Xu J, Wu S, Ma C. Increased cerebral cortex activation in stroke patients during electrical stimulation of cerebellar fastigial nucleus with functional near-infrared spectroscopy. Front Neurosci 2022; 16:895237. [PMID: 36061594 PMCID: PMC9433974 DOI: 10.3389/fnins.2022.895237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022] Open
Abstract
Background Electrical stimulation of the cerebellar fastigial nucleus (FNS) has been shown to protect animals against cerebral ischemic injury. However, the changes in cortical activation as a response to FNS have not been illustrated in humans. Objective This study aims to detect functional connectivity changes in the brain of stroke patients, and investigate the cortical activation caused by FNS through measuring the oxygenated hemoglobin concentration (HBO) in the cerebral cortex of stroke patients and healthy controls (HCs). Methods This study recruited 20 patients with stroke and 20 HCs with all the following factors matched: age, gender and BMI. The experiment session was made up of the pre-task baseline, FNS task period, and post-task baseline. FNS task period contains 5 blocks, each block encompassing the resting state (30 s) and the FNS state (30 s). HBO signals were acquired by functional near-infrared spectroscopy (fNIRS) from the Prefrontal Cortex (PFC), the Motor Cortex (MC) and the Occipital Cortex (OC) throughout the experiment. The Pearson correlation coefficient was used to calculate the resting-state functional connectivity strength between the two groups, and the general linear model (GLM) was used to calculate the activation of 39 fNIRS channels during FNS in stroke patients and HCs, respectively. Results The coupling strength of stroke patients were significantly decreased in the following regions: right MC and left MC (t = 4.65, p = 0.0007), right MC and left OC (t = 2.93, p = 0.04), left MC and left OC (t = 2.81, p = 0.04). In stroke patients, the changes in cerebral oxygenated hemoglobin (ΔHBO) among 12 channels (CH) in the bilateral PFC and bilateral MC regions were significantly increased during the FNS state (FDR corrected p < 0.05) compared with the resting state. In HCs, only 1 channel was increased (FDR corrected p < 0.05) in the left PFC during FNS. Conclusion By using the FNS and fNIRS techniques, the characteristics of functional connectivity were found to decrease in stroke patients. It was also noticed that FNS activates the PFC and MC regions. These findings may help to guide functional rehabilitation in stroke patients.
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Yu Q, Wu LB, Zhang F, Wei XT, Chen PP, Wang SY, Cai MY, Shu Q, Li LY, Wu ZJ, Cai RL, Hu L. Mechanisms of Electroacupuncture Pretreatment in Alleviating Myocardial Ischemia Reperfusion Injury: Interactions between the Cerebellar Fastigial Nucleus and Lateral Hypothalamic Area. J Acupunct Meridian Stud 2021; 14:207-218. [DOI: 10.51507/j.jams.2021.14.6.207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 11/04/2021] [Accepted: 12/10/2021] [Indexed: 11/03/2022] Open
Affiliation(s)
- Qing Yu
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
- Acupuncture and Meridian Research Institute, Anhui Academy of Chinese Medicine, Hefei, China
| | - Li-bin Wu
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Fan Zhang
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Xiao-tong Wei
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Pian-pian Chen
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Shuai-ya Wang
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Mei-yi Cai
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Qi Shu
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Liao-yuan Li
- College of Acupuncture and Moxibustion, Anhui University of Chinese Medicine, Hefei, China
| | - Zi-jian Wu
- Acupuncture and Meridian Research Institute, Anhui Academy of Chinese Medicine, Hefei, China
- Key Laboratory of Xin’an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, China
| | - Rong-lin Cai
- Acupuncture and Meridian Research Institute, Anhui Academy of Chinese Medicine, Hefei, China
- Key Laboratory of Xin’an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, China
| | - Ling Hu
- Acupuncture and Meridian Research Institute, Anhui Academy of Chinese Medicine, Hefei, China
- Key Laboratory of Xin’an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, China
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Zhang DP, Lu XY, He SC, Li WY, Ao R, Leung FCY, Zhang ZM, Chen QB, Zhang SJ. Sodium tanshinone IIA sulfonate protects against Aβ-induced cell toxicity through regulating Aβ process. J Cell Mol Med 2020; 24:3328-3335. [PMID: 31989795 PMCID: PMC7131914 DOI: 10.1111/jcmm.15006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/09/2019] [Accepted: 01/06/2020] [Indexed: 01/14/2023] Open
Abstract
Sodium tanshinone IIA sulfonate (STS) has been reported to prevent Alzheimer's disease (AD). However, the mechanism is still unknown. In this study, two in vitro models, Aβ-treated SH-SY5Y cells and SH-SY5Y human neuroblastoma cells transfected with APPsw (SH-SY5Y-APPsw cells), were employed to investigate the neuroprotective of STS. The results revealed that pretreatment with STS (1, 10 and 100 µmol/L) for 24 hours could protect against Aβ (10 µmol/L)-induced cell toxicity in a dose-dependent manner in the SH-SY5Y cells. Sodium tanshinone IIA sulfonate decreased the concentrations of reactive oxygen species, malondialdehyde, NO and iNOS, while increased the activities of superoxide dismutase and glutathione peroxidase in the SH-SY5Y cells. Sodium tanshinone IIA sulfonate decreased the levels of inflammatory factors (IL-1β, IL-6 and TNF-α) in the SH-SY5Y cells. In addition, Western blot results revealed that the expressions of neprilysin and insulin-degrading enzyme were up-regulated in the SH-SY5Y cells after STS treatment. Furthermore, ELISA and Western blot results showed that STS could decrease the levels of Aβ. ELISA and qPCR results indicated that STS could increase α-secretase (ADAM10) activity and decrease β-secretase (BACE1) activity. In conclusion, STS could protect against Aβ-induced cell damage by modulating Aβ degration and generation. Sodium tanshinone IIA sulfonate could be a promising candidate for AD treatment.
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Affiliation(s)
- Da-Peng Zhang
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xin-Yi Lu
- Biological Resource Center, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Si-Chen He
- Department of Neurology, The People's Hospital of Baiyun District Guangzhou, Guangzhou, China
| | - Wan-Yan Li
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ran Ao
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Feona Chung-Yin Leung
- LKS Faculty of Medicine, School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Zhi-Min Zhang
- The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Qu-Bo Chen
- Biological Resource Center, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shi-Jie Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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Zhou P, Liao G, Zhong Q, Wen Q, Gao G, Zhang C. Muscarinic Acetylcholine Receptor-2 in the Cerebellar Fastigial Nucleus is Involved in Acetylcholine-Mediated Blood Pressure Regulation in Rats. NEUROCHEM J+ 2019. [DOI: 10.1134/s1819712419020168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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CGY-1, a biflavonoid isolated from cardiocrinum giganteum seeds, improves memory deficits by modulating the cholinergic system in scopolamine-treated mice. Biomed Pharmacother 2019; 111:496-502. [DOI: 10.1016/j.biopha.2018.12.100] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/19/2018] [Accepted: 12/23/2018] [Indexed: 12/26/2022] Open
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Inhibitory modulation of the cough reflex by acetylcholine in the caudal nucleus tractus solitarii of the rabbit. Respir Physiol Neurobiol 2018; 257:93-99. [PMID: 29369803 DOI: 10.1016/j.resp.2018.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/08/2018] [Accepted: 01/15/2018] [Indexed: 12/16/2022]
Abstract
A cholinergic system has been described in the nucleus tractus solitarii (NTS). However, no information is available on the role played by acetylcholine (ACh) in the modulation of the cough reflex within the caudal NTS that has an important function in cough regulation. We addressed this issue making use of bilateral microinjections (30-50 nl) of 10 mM ACh combined with 5 mM physostigmine as well as of 10 mM mecamylamine or 10 mM scopolamine into the caudal NTS of pentobarbital sodium-anesthetized, spontaneously breathing rabbits. Microinjections of ACh/physostigmine caused depressant effects on the cough reflex induced by mechanical and chemical stimulation of the tracheobronchial tree. They also elicited transient increases in respiratory frequency and decreases in abdominal activity. These effects were prevented by scopolamine, but not by mecamylamine. The results show for the first time that ACh exerts an inhibitory modulation of the cough reflex through muscarinic receptors within the caudal NTS. They also may provide hints for novel antitussive approaches.
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Fink AM, Dean C, Piano MR, Carley DW. The pedunculopontine tegmentum controls renal sympathetic nerve activity and cardiorespiratory activities in nembutal-anesthetized rats. PLoS One 2017; 12:e0187956. [PMID: 29121095 PMCID: PMC5679551 DOI: 10.1371/journal.pone.0187956] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 10/30/2017] [Indexed: 11/18/2022] Open
Abstract
Elevated renal sympathetic nerve activity (RSNA) accompanies a variety of complex disorders, including obstructive sleep apnea, heart failure, and chronic kidney disease. Understanding pathophysiologic renal mechanisms is important for determining why hypertension is both a common sequelae and a predisposing factor of these disorders. The role of the brainstem in regulating RSNA remains incompletely understood. The pedunculopontine tegmentum (PPT) is known for regulating behaviors including alertness, locomotion, and rapid eye movement sleep. Activation of PPT neurons in anesthetized rats was previously found to increase splanchnic sympathetic nerve activity and blood pressure, in addition to altering breathing. The present study is the first investigation of the PPT and its potential role in regulating RSNA. Microinjections of DL-homocysteic acid (DLH) were used to probe the PPT in 100-μm increments in Nembutal-anesthetized rats to identify effective sites, defined as locations where changes in RSNA could be evoked. A total of 239 DLH microinjections were made in 18 rats, which identified 20 effective sites (each confirmed by the ability to evoke a repeatable sympathoexcitatory response). Peak increases in RSNA occurred within 10–20 seconds of PPT activation, with RSNA increasing by 104.5 ± 68.4% (mean ± standard deviation) from baseline. Mean arterial pressure remained significantly elevated for 30 seconds, increasing from 101.6 ± 18.6 mmHg to 135.9 ± 36.4 mmHg. DLH microinjections also increased respiratory rate and minute ventilation. The effective sites were found throughout the rostal-caudal extent of the PPT with most located in the dorsal regions of the nucleus. The majority of PPT locations tested with DLH microinjections did not alter RSNA (179 sites), suggesting that the neurons that confer renal sympathoexcitatory functions comprise a small component of the PPT. The study also underscores the importance of further investigation to determine whether sympathoexcitatory PPT neurons contribute to adverse renal and cardiovascular consequences of diseases such as obstructive sleep apnea and heart failure.
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Affiliation(s)
- Anne M. Fink
- Center for Narcolepsy, Sleep, and Health Research, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Biobehavioral Health Science, University of Illinois at Chicago, Chicago, Illinois, United States of America
- * E-mail:
| | - Caron Dean
- Department of Anesthesiology, Medical College of Wisconsin and Zablocki VA Medical Center, Milwaukee, Wisconsin, United States of America
| | - Mariann R. Piano
- Department of Biobehavioral Health Science, University of Illinois at Chicago, Chicago, Illinois, United States of America
| | - David W. Carley
- Center for Narcolepsy, Sleep, and Health Research, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Biobehavioral Health Science, University of Illinois at Chicago, Chicago, Illinois, United States of America
- Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, United States of America
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