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Huang H, Liao X, Zhang A, Qiu B, Mei F, Liu F, Zeng K, Yang C, Ma H, Ding W, Qi S, Bao Y. Cerebrospinal Fluid from Patients After Craniotomy with the Appearance of Interleukin-6 Storm Can Activate Microglia to Damage the Hypothalamic Neurons in Mice. Mol Neurobiol 2024; 61:2707-2718. [PMID: 37924484 DOI: 10.1007/s12035-023-03693-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 10/04/2023] [Indexed: 11/06/2023]
Abstract
We monitored CSF (cerebrospinal fluid) for Th1/Th2 inflammatory cytokines in a patient with unexplained postoperative disturbance of consciousness after craniotomy and found that the level of IL-6 (interleukin-6) concentrations was extremely high, meeting the traditional criteria for an inflammatory cytokine storm. Subsequently, the cerebrospinal fluid specimens of several patients were tested, and it was found that IL-6 levels were increased in different degrees after craniotomy. Previous studies have focused more on mild and long-term IL-6 elevation, but less on the effects of this short-term IL-6 inflammatory cytokine storm. Cerebrospinal fluid rich in IL-6 may play a significant role in patients after craniotomy. The objective is to explore the degree of IL-6 elevation and the incidence of IL-6 inflammatory cytokine storm in patients after craniotomy, as well as the effect of IL-6 elevation on the brain. In this study, the levels and clinical manifestations of inflammatory factors in cerebrospinal fluid after craniotomy were statistically classified, and the underlying mechanisms were discussed preliminarily. CSF specimens of patients after craniotomy were collected, IL-6 level was measured at 1, 5, and 10 days after operation, and cognitive function was analyzed at 1, 10, and 180 days after surgery. Craniotomy mouse model, cerebrospinal fluid of patients with the appearance of IL-6 storm after craniotomy, and IL-6 at the same concentration stimulation model were established. Behavioral tests, fluorescence in situ hybridization (FISH), pathological means, western blot, and ELISA (enzyme-linked immune-sorbent assay) were performed for verification. CSF from patients after craniotomy caused disturbance of consciousness in mice, affected neuronal damage in the hypothalamus, activation of microglia in the hypothalamus, and decreased expression of barrier proteins in the hypothalamus and brain. The large amount of interleukin-6 in CSF after craniotomy was found to be mainly derived from astrocytes. The IL-6 level in CSF after craniotomy correlated inversely with patients' performance in MoCA test. High levels of IL-6 in the cerebrospinal fluid derived from astrocytes after craniotomy may lead to disruption of the brain-cerebrospinal fluid barrier, most notably around the hypothalamus, which might result in inflammatory activation of microglia to damage the hypothalamic neurons and impaired cognitive function/more gradual cognitive repairment in patients after craniotomy with the appearance of IL-6 storm.
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Affiliation(s)
- Haorun Huang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Xixian Liao
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - An Zhang
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Binghui Qiu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Fen Mei
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Fan Liu
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Kai Zeng
- The First Clinical College, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Chunen Yang
- The First Clinical College, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Haidie Ma
- The First Clinical College, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Wenjie Ding
- The First Clinical College, Southern Medical University, Guangzhou City, Guangdong Province, China
| | - Songtao Qi
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China.
| | - Yun Bao
- Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou City, Guangdong Province, China.
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Lee TH, Chen JL, Chang CH, Tsai MM, Tseng HC, Chang YC, Shanmugam V, Hsieh HL. A Brain-Protective Sterol from Soft Coral Inhibits Lipopolysaccharide-Induced Matrix Metalloproteinase-9-Mediated Astrocytic Migration. Biomedicines 2024; 12:226. [PMID: 38275397 PMCID: PMC10813456 DOI: 10.3390/biomedicines12010226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
Matrix metalloproteinases (MMPs), which are proteolytic enzymes, promote blood-brain barrier (BBB) disruption, leading to neuronal damage and neuroinflammation. Among them, MMP-9 upregulation serves as an inflammatory biomarker in the central nervous system (CNS). Currently, the development of marine organism-derived bioactive compounds or metabolites as anti-inflammatory drugs has received considerable attention. The 9,11-secosteroid, 3β,11-dihydroxy-9,11-secogorgost-5-en-9-one (4p3f), is a novel sterol compound extracted from the soft coral Sinularia leptoclado with potential anti-inflammatory activity. However, the effect of and potential for brain protection of 4p3f on brain astrocytes remain unclear. Herein, we used rat brain astrocytes (RBAs) to investigate the effects and signaling mechanisms of 4p3f on lipopolysaccharide (LPS)-induced MMP-9 expression via zymographic, quantitative reverse transcription-polymerase chain reaction (qRT-PCR), Western blot, immunofluorescence staining, promoter-reporter, and cell migration analyses. We first found that 4p3f blocked LPS-induced MMP-9 expression in RBAs. Next, we demonstrated that LPS induced MMP-9 expression via the activation of ERK1/2, p38 MAPK, and JNK1/2, which is linked to the STAT3-mediated NF-κB signaling pathway. Finally, 4p3f effectively inhibited LPS-induced upregulation of MMP-9-triggered RBA cell migration. These data suggest that a novel sterol from soft coral, 4p3f, may have anti-inflammatory and brain-protective effects by attenuating these signaling pathways of MMP-9-mediated events in brain astrocytes. Accordingly, the soft coral-derived sterol 4p3f may emerge as a potential candidate for drug development or as a natural compound with neuroprotective properties.
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Affiliation(s)
- Tsong-Hai Lee
- Stroke Center and Stroke Section, Department of Neurology, Chang Gung Memorial Hospital, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
| | - Jiun-Liang Chen
- Division of Chinese Internal Medicine, Center for Traditional Chinese Medicine, Chang Gung Memorial Hospital, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
| | - Chuan-Hsin Chang
- Division of Basic Medical Sciences, Department of Nursing, Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; (C.-H.C.); (M.-M.T.); (H.-C.T.); (Y.-C.C.)
| | - Ming-Ming Tsai
- Division of Basic Medical Sciences, Department of Nursing, Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; (C.-H.C.); (M.-M.T.); (H.-C.T.); (Y.-C.C.)
| | - Hui-Ching Tseng
- Division of Basic Medical Sciences, Department of Nursing, Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; (C.-H.C.); (M.-M.T.); (H.-C.T.); (Y.-C.C.)
| | - Yu-Chia Chang
- Division of Basic Medical Sciences, Department of Nursing, Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; (C.-H.C.); (M.-M.T.); (H.-C.T.); (Y.-C.C.)
| | | | - Hsi-Lung Hsieh
- Division of Basic Medical Sciences, Department of Nursing, Research Center for Chinese Herbal Medicine, Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan; (C.-H.C.); (M.-M.T.); (H.-C.T.); (Y.-C.C.)
- Department of Neurology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
- Department of Chemical Engineering, Ming Chi University of Technology, R&D Center of Biochemical Engineering Technology, New Taipei City 301, Taiwan
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Lin FX, Pan QL, Gu HY, Zeng FJ, Lu ZJ. The Role of Resveratrol on Spinal Cord Injury: from Bench to Bedside. Mol Neurobiol 2024; 61:104-119. [PMID: 37584822 DOI: 10.1007/s12035-023-03558-7] [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: 06/06/2023] [Accepted: 08/05/2023] [Indexed: 08/17/2023]
Abstract
Spinal cord injury (SCI) is a severe and disabling injury of the central nervous system, with complex pathological mechanisms leading to sensory and motor dysfunction. Pathological processes, such as oxidative stress, inflammatory response, apoptosis, and glial scarring are important factors that aggravate SCI. Therefore, the inhibition of these pathological processes may contribute to the treatment of SCI. Currently, the pathogenesis of SCI remains under investigation as SCI treatment has not progressed considerably. Resveratrol, a natural polyphenol with anti-inflammatory and antioxidant properties, is considered a potential therapeutic drug for various diseases and plays a beneficial role in nerve damage. Preclinical studies have confirmed that signaling pathways are closely related to the pathological processes in SCI, and resveratrol is believed to exert therapeutic effects in SCI by activating the related signaling pathways. Based on current research on the pathways of resveratrol and its role in SCI, resveratrol may be a potentially effective treatment for SCI. This review summarizes the role of resveratrol in promoting the recovery of nerve function by regulating oxidative stress, inflammation, apoptosis, and glial scar formation in SCI through various mechanisms and pathways, as well as the deficiency of resveratrol in SCI research and the current and anticipated research trends of resveratrol. In addition, this review provides a background for further studies on the molecular mechanisms of SCI and the development of potential therapeutic agents. This information could also help clinicians understand the known mechanisms of action of resveratrol and provide better treatment options for patients with SCI.
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Affiliation(s)
- Fei-Xiang Lin
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University, (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
| | - Qi-Lin Pan
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University, (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Hou-Yun Gu
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University, (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Fang-Jun Zeng
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University, (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Zhi-Jun Lu
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University, (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
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Moghadam MT, Mojtahedi A, Bakhshayesh B, Babakhani S, Ajorloo P, Shariati A, Mirzaei M, Heidarzadeh S, Jazi FM. The Effect of Bacterial Composition Shifts in the Oral Microbiota on Alzheimer's Disease. Curr Mol Med 2024; 24:167-181. [PMID: 35986539 DOI: 10.2174/1566524023666220819140748] [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: 03/21/2022] [Revised: 05/16/2022] [Accepted: 05/30/2022] [Indexed: 11/22/2022]
Abstract
Alzheimer's disease (AD), a neurological disorder, despite significant advances in medical science, has not yet been definitively cured, and the exact causes of the disease remain unclear. Due to the importance of AD in the clinic, large expenses are spent annually to deal with this neurological disorder, and neurologists warn of an increase in this disease in elderly in the near future. It has been believed that microbiota dysbiosis leads to Alzheimer's as a multi-step disease. In this regard, the presence of footprints of perturbations in the oral microbiome and the predominance of pathogenic bacteria and their effect on the nervous system, especially AD, is a very interesting topic that has been considered by researchers in the last decade. Some studies have looked at the mechanisms by which oral microbiota cause AD. However, many aspects of this interaction are still unclear as to how oral microbiota composition can contribute to this disease. Understanding this interaction requires extensive collaboration by interdisciplinary researchers to explore all aspects of the issue. In order to reveal the link between the composition of the oral microbiota and this disease, researchers from various domains have sought to explain the mechanisms of shift in oral microbiota in AD in this review.
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Affiliation(s)
- Majid Taati Moghadam
- Student Research Committee, Iran University of Medical Sciences, Tehran, Iran
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Mojtahedi
- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Babak Bakhshayesh
- Department of Neurology, Neuroscience Research Center, Poursina Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Sajad Babakhani
- Department of Microbiology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Parisa Ajorloo
- Department of Biology, Sciences and Research Branch, Islamic Azad University, Tehran, Iran
| | - Aref Shariati
- Molecular and Medicine Research Center, Khomein University of Medical Sciences, Khomein, Iran
| | - Mehrnaz Mirzaei
- Department of Microbiology, Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran
| | - Siamak Heidarzadeh
- Department of Microbiology and Virology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Faramarz Masjedian Jazi
- Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
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Ding Y, Peng YY, Li S, Tang C, Gao J, Wang HY, Long ZY, Lu XM, Wang YT. Single-Cell Sequencing Technology and Its Application in the Study of Central Nervous System Diseases. Cell Biochem Biophys 2023:10.1007/s12013-023-01207-3. [PMID: 38133792 DOI: 10.1007/s12013-023-01207-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/30/2023] [Indexed: 12/23/2023]
Abstract
The mammalian central nervous system consists of a large number of cells, which contain not only different types of neurons, but also a large number of glial cells, such as astrocytes, oligodendrocytes, and microglia. These cells are capable of performing highly refined electrophysiological activities and providing the brain with functions such as nutritional support, information transmission and pathogen defense. The diversity of cell types and individual differences between cells have brought inspiration to the study of the mechanism of central nervous system diseases. In order to explore the role of different cells, a new technology, single-cell sequencing technology has emerged to perform specific analysis of high-throughput cell populations, and has been continuously developed. Single-cell sequencing technology can accurately analyze single-cell expression in mixed-cell populations and collect cells from different spatial locations, time stages and types. By using single-cell sequencing technology to compare gene expression profiles of normal and diseased cells, it is possible to discover cell subsets associated with specific diseases and their associated genes. Therefore, scientists can understand the development process, related functions and disease state of the nervous system from an unprecedented depth. In conclusion, single-cell sequencing technology provides a powerful technology for the discovery of novel therapeutic targets for central nervous system diseases.
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Affiliation(s)
- Yang Ding
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054, China
- State Key Laboratory of Trauma and Chemical Poisoning, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Yu-Yuan Peng
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Sen Li
- State Key Laboratory of Trauma and Chemical Poisoning, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Can Tang
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Jie Gao
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054, China
| | - Hai-Yan Wang
- State Key Laboratory of Trauma and Chemical Poisoning, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Zai-Yun Long
- State Key Laboratory of Trauma and Chemical Poisoning, Daping Hospital, Army Medical University, Chongqing, 400042, China
| | - Xiu-Min Lu
- College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054, China.
| | - Yong-Tang Wang
- State Key Laboratory of Trauma and Chemical Poisoning, Daping Hospital, Army Medical University, Chongqing, 400042, China.
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Ding Y, Chen Q. The NF-κB Pathway: a Focus on Inflammatory Responses in Spinal Cord Injury. Mol Neurobiol 2023; 60:5292-5308. [PMID: 37286724 DOI: 10.1007/s12035-023-03411-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Spinal cord injury (SCI) is a type of central nervous system trauma that can lead to severe nerve injury. Inflammatory reaction after injury is an important pathological process leading to secondary injury. Long-term stimulation of inflammation can further deteriorate the microenvironment of the injured site, leading to the deterioration of neural function. Understanding the signaling pathways that regulate responses after SCI, especially inflammatory responses, is critical for the development of new therapeutic targets and approaches. Nuclear transfer factor-κB (NF-κB) has long been recognized as a key factor in regulating inflammatory responses. The NF-κB pathway is closely related to the pathological process of SCI. Inhibition of this pathway can improve the inflammatory microenvironment and promote the recovery of neural function after SCI. Therefore, the NF-κB pathway may be a potential therapeutic target for SCI. This article reviews the mechanism of inflammatory response after SCI and the characteristics of NF-κB pathway, emphasizing the effect of inhibiting NF-κB on the inflammatory response of SCI to provide a theoretical basis for the biological treatment of SCI.
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Affiliation(s)
- Yi Ding
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- The Affiliated Ganzhou Hospital of Nanchang University, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Qin Chen
- Department of Spine Surgery, Ganzhou People's Hospital, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
- The Affiliated Ganzhou Hospital of Nanchang University, 16 Meiguan Avenue, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
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Leonardo S, Fregni F. Association of inflammation and cognition in the elderly: A systematic review and meta-analysis. Front Aging Neurosci 2023; 15:1069439. [PMID: 36815174 PMCID: PMC9939705 DOI: 10.3389/fnagi.2023.1069439] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 01/05/2023] [Indexed: 02/09/2023] Open
Abstract
Background The development of mild cognitive impairment (MCI) and Alzheimer's disease (AD) may be associated with an inflammatory process. Inflammatory cytokines may be a surrogate for systemic inflammation leading to worsening neurological function. We aim to investigate the association between cognitive impairment and inflammation by pooling and analyzing the data from previously published studies. Methods We performed a systematic literature search on MEDLINE, PubMed, Embase, Web of Science, and Scopus for prospective longitudinal and cross-sectional studies evaluating the relationship between inflammation and cognitive functions. Results A total of 79 articles were included in our systematic review and meta-analysis. Pooled estimates from cross-sectional studies have demonstrated an increased level of C-reactive protein (CRP) [Hedges's g 0.35, 95% CI (0.16, 0.55), p < 0.05], IL-1β [0.94, 95% CI (-0.04, 1.92), p < 0.05], interleukin-6 (IL-6) [0.46, 95% CI (0.05, 0.88), p < 0.005], TNF alpha [0.22, 95% CI (-0.24, 0.68), p < 0.05], sTNFR-1 [0.74, 95% CI (0.46, 1.02), p < 0.05] in AD compared to controls. Similarly, higher levels of IL-1β [0.17, 95% CI (0.05, 0.28), p < 0.05], IL-6 [0.13, 95% CI (0.08, 0.18), p < 0.005], TNF alpha [0.28, 95% CI (0.07, 0.49), p < 0.05], sTNFR-1 [0.21, 95% CI (0.05, 0.48), p < 0.05] was also observed in MCI vs. control samples. The data from longitudinal studies suggested that levels of IL-6 significantly increased the risk of cognitive decline [OR = 1.34, 95% CI (1.13, 1.56)]. However, intermediate levels of IL-6 had no significant effect on the final clinical endpoint [OR = 1.06, 95% CI (0.8, 1.32)]. Conclusion The data from cross-sectional studies suggest a higher level of inflammatory cytokines in AD and MCI as compared to controls. Moreover, data from longitudinal studies suggest that the risk of cognitive deterioration may increase by high IL-6 levels. According to our analysis, CRP, antichymotrypsin (ACT), Albumin, and tumor necrosis factor (TNF) alpha may not be good surrogates for neurological degeneration over time.
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Affiliation(s)
- Sofia Leonardo
- Ph.D. Department, Universidad Francisco Marroquín, Guatemala City, Guatemala,*Correspondence: Sofia Leonardo,
| | - Felipe Fregni
- Center for Neuromodulation and Clinical Research Learning, Spaulding Rehabilitation Hospital and Massachusetts General Hospital, Boston, MA, United States
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Neurotoxicity evoked by organophosphates and available countermeasures. Arch Toxicol 2023; 97:39-72. [PMID: 36335468 DOI: 10.1007/s00204-022-03397-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
Abstract
Organophosphorus compounds (OP) are a constant problem, both in the military and in the civilian field, not only in the form of acute poisoning but also for their long-lasting consequences. No antidote has been found that satisfactorily protects against the toxic effects of organophosphates. Likewise, there is no universal cure to avert damage after poisoning. The key mechanism of organophosphate toxicity is the inhibition of acetylcholinesterase. The overstimulation of nicotinic or muscarinic receptors by accumulated acetylcholine on a synaptic cleft leads to activation of the glutamatergic system and the development of seizures. Further consequences include generation of reactive oxygen species (ROS), neuroinflammation, and the formation of various other neuropathologists. In this review, we present neuroprotection strategies which can slow down the secondary nerve cell damage and alleviate neurological and neuropsychiatric disturbance. In our opinion, there is no unequivocal approach to ensure neuroprotection, however, sooner the neurotoxicity pathway is targeted, the better the results which can be expected. It seems crucial to target the key propagation pathways, i.e., to block cholinergic and, foremostly, glutamatergic cascades. Currently, the privileged approach oriented to stimulating GABAAR by benzodiazepines is of limited efficacy, so that antagonizing the hyperactivity of the glutamatergic system could provide an even more efficacious approach for terminating OP-induced seizures and protecting the brain from permanent damage. Encouraging results have been reported for tezampanel, an antagonist of GluK1 kainate and AMPA receptors, especially in combination with caramiphen, an anticholinergic and anti-glutamatergic agent. On the other hand, targeting ROS by antioxidants cannot or already developed neuroinflammation does not seem to be very productive as other processes are also involved.
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Shi Z, Jiang X, Geng Y, Yue X, Gao J, Cheng X, Zhao M, Zhu L. Expression profile of cytokines and chemokines in a mouse high-altitude cerebral edema model. Int J Immunopathol Pharmacol 2023; 37:3946320231177189. [PMID: 37188519 DOI: 10.1177/03946320231177189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
INTRODUCTION High-altitude cerebral edema (HACE) is considered to be the end-stage of acute mountain sickness (AMS); however, its pathophysiological mechanism remains unknown. Increasing evidences support that inflammation is an important risk factor for the occurrence of HACE. Including our published papers, previous studies demonstrated that the levels of IL-6, IL-1β, and TNF-α in both serum and hippocampus were increased in the mouse HACE model induced by LPS stimulation combined with hypobaric hypoxia exposure; however, the expression profile of other cytokines and chemokines remains unknown. OBJECTIVE This study was to analyze the expression profile of cytokines and chemokines in the HACE model. METHODS The mouse HACE model was established by LPS stimulation combined with hypobaric hypoxia exposure (LH). The mice were divided into the normoxic group, LH-6 h group, LH-1 d group, and LH-7 d group. Brain water content (BWC) was determined using the wet/dry weight ratio. The levels of 30 cytokines and chemokines in the serum and hippocampal tissue were detected using LiquiChip. The mRNA expression of cytokines and chemokines in hippocampal tissue were determined by q-PCR. RESULTS In the current study, we found that the brain water content was increased after the combinational treatment of LPS and hypobaric hypoxia. The results of LiquiChip showed that, in the serum and hippocampal tissue, most factors in all 30 cytokines and chemokines were dramatically upregulated at 6 h, and then declined at the 1st d and 7th d. Among these factors, G-CSF, M-CSF, MCP-1, KC, MIG, Eotaxin, Rantes, IP10, IL-6, MIP-2, and MIP-1β were all increased in both serum and hippocampal tissue at 6 h. In addition, the results of q-PCR showed the mRNA levels of G-CSF, MCP-1, KC, MIG, Eotaxin, Rantes, IP10, IL-6, MIP-2, and MIP-1β in hippocampal tissue were dramatically upregulated at 6 h. CONCLUSION This study showed that the dynamic expression profile of 30 cytokines and chemokines in a mouse HACE model induced by LPS plus hypobaric hypoxia. The levels of G-CSF, MCP-1, KC, MIG, Eotaxin, Rantes, IP10, IL-6, MIP-2, and MIP-1β in both serum and hippocampus were significantly increased at 6 h, which may be involved in the occurrence and development of HACE.
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Affiliation(s)
- Zibi Shi
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Xiufang Jiang
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Yanan Geng
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Xiangpei Yue
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Jiayue Gao
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Xiang Cheng
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Ming Zhao
- Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Lingling Zhu
- Beijing Institute of Basic Medical Sciences, Beijing, China
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong, China
- School of Pharmaceutical Sciences, University of South China, Hengyang, China
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Pandey V, Shukla D, Nirmal S, Devi BI, Christopher R. Biomarkers in Traumatic Brain Injuries: Narrative Review. INDIAN JOURNAL OF NEUROTRAUMA 2022. [DOI: 10.1055/s-0042-1759853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AbstractTraumatic brain injury (TBI) is a multistep interaction of brain antigens, cytokine-mediated humeral, and cellular immune reactions. Because of the limitations of clinical and radiological evaluation in TBI, there has been a considerable advancement toward the need for developing biomarkers that can predict the severity of TBI. Blood-based brain biomarkers hold the potential to predict the absence of intracranial injury and thus decrease unnecessary brain computed tomographic scanning. Various biomarkers have been studied that detects neuronal, axonal, and blood–brain barrier integrity. Biomarkers are still under investigation and hold promise in the future evaluation of TBI patients. They can be used for grading as well as a prognostication of head injury.
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Affiliation(s)
- Vishram Pandey
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, NIMHANS, Bangalore, Karnataka, India
| | - Dhaval Shukla
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, NIMHANS, Bangalore, Karnataka, India
| | - Shubham Nirmal
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, NIMHANS, Bangalore, Karnataka, India
| | - Bhagavatula Indira Devi
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, NIMHANS, Bangalore, Karnataka, India
| | - Rita Christopher
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, NIMHANS, Bangalore, Karnataka, India
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The role of PI3K/Akt signalling pathway in spinal cord injury. Biomed Pharmacother 2022; 156:113881. [DOI: 10.1016/j.biopha.2022.113881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 10/13/2022] [Accepted: 10/13/2022] [Indexed: 11/18/2022] Open
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Edlmann E, Giorgi-Coll S, Thelin EP, Hutchinson PJ, Carpenter KLH. Dexamethasone reduces vascular endothelial growth factor in comparison to placebo in post-operative chronic subdural hematoma samples: A target for future drug therapy? Front Neurol 2022; 13:952308. [PMID: 36158966 PMCID: PMC9492873 DOI: 10.3389/fneur.2022.952308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/25/2022] [Indexed: 11/30/2022] Open
Abstract
Background Chronic subdural hematoma (CSDH) is a collection of blood and fluid that arises on the brain surface due to a combination of trauma and/or inflammation. The mainstay of treatment is surgical drainage, but CSDH can recur. Dexamethasone has been shown to reduce CSDH recurrence, but its mechanism of action has not been fully elucidated. Understanding the inflammatory mediators driving CSDH formation and recurrence and how dexamethasone alters this can help develop new therapeutic strategies. Methods A subgroup of adult patients recruited to the Dex-CSDH trial, randomized to dexamethasone or placebo, who had surgery for their CSDH, were included. CSDH fluid and peripheral blood were collected intraoperatively, from post-operative drains and operated recurrences. Samples were analyzed using a 12-plex panel of inflammatory mediators. Clinical patient data were also reviewed. Results A total of 52 patients, with a mean age of 76 years, were included. Five recurrent CSDHs occurred. Vascular endothelial growth factor (VEGF) had the highest concentration across all CSDHs, and only matrix metalloproteinase (MMP)-9 had lower concentrations in CSDH compared to plasma but was increased in recurrent CSDHs. The interleukin (IL)-10 concentration was significantly lower in primary CSDHs that recurred. Most inflammatory mediators increased post-operatively, and dexamethasone significantly reduced the post-operative peak in VEGF on day 2, compared to placebo. Conclusion It is evident that VEGF plays a critical role in the inflammatory response in CSDH. The post-operative reduction with dexamethasone could signal the mechanism by which it reduces recurrence. Novel therapies with a better side-effect profile than dexamethasone should be targeted at VEGF or potential alternatives such as IL-10 supplementation.
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Affiliation(s)
- Ellie Edlmann
- Peninsula Medical School, Faculty of Health, University of Plymouth, Plymouth, United Kingdom
- Southwest Neurosurgical Centre, Derriford Hospital, Plymouth, United Kingdom
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Susan Giorgi-Coll
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Eric P. Thelin
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurology, Karolinska University Hospital, Stockholm, Sweden
| | - Peter J. Hutchinson
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Keri L. H. Carpenter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
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Rauf A, Badoni H, Abu-Izneid T, Olatunde A, Rahman MM, Painuli S, Semwal P, Wilairatana P, Mubarak MS. Neuroinflammatory Markers: Key Indicators in the Pathology of Neurodegenerative Diseases. Molecules 2022; 27:molecules27103194. [PMID: 35630670 PMCID: PMC9146652 DOI: 10.3390/molecules27103194] [Citation(s) in RCA: 78] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 05/05/2022] [Accepted: 05/12/2022] [Indexed: 12/12/2022] Open
Abstract
Neuroinflammation, a protective response of the central nervous system (CNS), is associated with the pathogenesis of neurodegenerative diseases. The CNS is composed of neurons and glial cells consisting of microglia, oligodendrocytes, and astrocytes. Entry of any foreign pathogen activates the glial cells (astrocytes and microglia) and overactivation of these cells triggers the release of various neuroinflammatory markers (NMs), such as the tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-1β (IL-10), nitric oxide (NO), and cyclooxygenase-2 (COX-2), among others. Various studies have shown the role of neuroinflammatory markers in the occurrence, diagnosis, and treatment of neurodegenerative diseases. These markers also trigger the formation of various other factors responsible for causing several neuronal diseases including Alzheimer’s disease (AD), Parkinson’s disease (PD), Huntington’s disease (HD), multiple sclerosis (MS), ischemia, and several others. This comprehensive review aims to reveal the mechanism of neuroinflammatory markers (NMs), which could cause different neurodegenerative disorders. Important NMs may represent pathophysiologic processes leading to the generation of neurodegenerative diseases. In addition, various molecular alterations related to neurodegenerative diseases are discussed. Identifying these NMs may assist in the early diagnosis and detection of therapeutic targets for treating various neurodegenerative diseases.
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Affiliation(s)
- Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan
- Correspondence: (A.R.); (P.W.); (M.S.M.)
| | - Himani Badoni
- Department of Biotechnology, School of Applied and Life Sciences, Uttaranchal University, Premnagar, Dehradun 248006, India;
| | - Tareq Abu-Izneid
- Pharmaceutical Sciences Department, College of Pharmacy, Al Ain University for Science and Technology, Al Ain 64141, United Arab Emirates;
| | - Ahmed Olatunde
- Department of Medical Biochemistry, Abubakar Tafawa Balewa University, Bauchi 740272, Nigeria;
| | - Md. Mominur Rahman
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh;
| | - Sakshi Painuli
- Uttarakhand Council for Biotechnology (UCB), Premnagar, Dehradun 248007, India;
| | - Prabhakar Semwal
- Department of Life Sciences, Graphic Era (Deemed To Be University), Dehradun 248002, India;
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
- Correspondence: (A.R.); (P.W.); (M.S.M.)
| | - Mohammad S. Mubarak
- Department of Chemistry, The University of Jordan, Amman 11942, Jordan
- Correspondence: (A.R.); (P.W.); (M.S.M.)
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Esculetin and Fucoidan Attenuate Autophagy and Apoptosis Induced by Zinc Oxide Nanoparticles through Modulating Reactive Astrocyte and Proinflammatory Cytokines in the Rat Brain. TOXICS 2022; 10:toxics10040194. [PMID: 35448455 PMCID: PMC9025201 DOI: 10.3390/toxics10040194] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/07/2022] [Accepted: 04/14/2022] [Indexed: 12/10/2022]
Abstract
We examined the protective effects of esculetin and fucoidan against the neurotoxicity of ZnO NPs in rats. Ninety rats were divided into nine groups and pre-treated with esculetin or fucoidan 1 h before ZnO NP administration on a daily basis for 2 weeks. Serum and brain homogenates were examined by enzyme-linked immunosorbent assay (ELISA), and neurons, microglia, and astrocytes in the hippocampal region were examined with immunohistochemical analysis. The serum levels of interleukin-1-beta (IL-1β), 3-nitrotyrosine (3-NT), superoxide dismutase (SOD), and 8-hydroxy-2′-deoxyguanosine (8-OHdG) were altered in the ZnO NP treatment groups. Brain IL-1β and TNF-α levels were elevated after ZnO NP administration, and these effects were inhibited by esculetin and fucoidan. SOD, 8-OHdG, and acetylcholinesterase (AChE) levels in the brain were decreased after ZnO NP administration. The brain levels of beclin-1 and caspase-3 were elevated after ZnO NP treatment, and these effects were significantly ameliorated by esculetin and fucoidan. The number of reactive astrocytes measured by counting glial fibrillary acidic protein (GFAP)-positive cells, but not microglia, increased following ZnO NP treatment, and esculetin and fucoidan ameliorated the changes. Esculetin and fucoidan may be beneficial for preventing ZnO NP-mediated autophagy and apoptosis by the modulation of reactive astrocyte and proinflammatory cytokines in the rat brain.
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Ski regulates the inflammatory response of reactive astrocytes induced by oxygen glucose deprivation/reoxygenation (OGD/R) through the NF-κB pathway. Neuroscience 2022; 490:250-263. [PMID: 35339646 DOI: 10.1016/j.neuroscience.2022.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 01/07/2022] [Accepted: 02/14/2022] [Indexed: 10/18/2022]
Abstract
Spinal cord injury (SCI) is a common disease of the nervous system, including primary and secondary injuries.Neuronal inflammation after SCI is the most important pathological process of SCI and a chemical barrier to nerve function recovery after injury.Ski, an evolutionarily conserved functional transcriptional regulator protein, is upregulated in reactive astrocytes after SCI and regulates the biological characteristics of astrocytes. However, its role in the glial inflammatory response triggered by reactive astrocytes after spinal cord ischemia and its exact mechanism remains unclear. This study investigated the role and mechanism of Ski in the inflammatory response triggered by reactive astrocytes induced by oxygen and sugar deprivation/reoxygenation (OGD/R) model in vitro. In the ODG/R model, Ski expression was upregulated.In contrast, Ski upregulation was accompanied by increased levels of iNOS, IL-1β, IL-6, TNF-α, and other inflammation-related factors.These results indicated that the inflammatory response triggered by astrocytes was significantly enhanced in OGD/R-stimulated astrocytes. Astrocytes were transfected with Ski specific siRNA to knock out Ski and subsequently attenuate OGD-induced astrocyte-triggered inflammation.Our results also suggest that Ski downregulation downregulates the expression of iNOS, IL-1β, IL-6, and TNF-α in OGD/R-induced reactive astrocytes by inhibiting the activity of the NF-κB signaling pathway. In conclusion, downregulation of Ski can effectively inhibit glial inflammation in SCI by inhibiting the activity of the NF-κB pathway.These findings suggest that Ski is a promising therapeutic target for inflammatory responses after SCI.In conclusion, Ski downregulation can effectively inhibit glial inflammation in SCI by inhibiting the activity of the NF-κB pathway. These findings suggest that Ski might serve as a promising target for the treatment of inflammatory responses after SCI.
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Extracellular Vesicles Derived from Young Neural Cultures Attenuate Astrocytic Reactivity In Vitro. Int J Mol Sci 2022; 23:ijms23031371. [PMID: 35163295 PMCID: PMC8835866 DOI: 10.3390/ijms23031371] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/21/2022] [Accepted: 01/21/2022] [Indexed: 02/06/2023] Open
Abstract
Extracellular vesicles (EVs) play an important role in intercellular communication and are involved in both physiological and pathological processes. In the central nervous system (CNS), EVs secreted from different brain cell types exert a sundry of functions, from modulation of astrocytic proliferation and microglial activation to neuronal protection and regeneration. However, the effect of aging on the biological functions of neural EVs is poorly understood. In this work, we studied the biological effects of small EVs (sEVs) isolated from neural cells maintained for 14 or 21 days in vitro (DIV). We found that EVs isolated from 14 DIV cultures reduced the extracellular levels of lactate dehydrogenase (LDH), the expression levels of the astrocytic protein GFAP, and the complexity of astrocyte architecture suggesting a role in lowering the reactivity of astrocytes, while EVs produced by 21 DIV cells did not show any of the above effects. These results in an in vitro model pave the way to evaluate whether similar results occur in vivo and through what mechanisms.
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Shah MA, Kang JB, Park DJ, Kim MO, Koh PO. Chlorogenic acid alleviates cerebral ischemia-induced neuroinflammation via attenuating nuclear factor kappa B activation. Neurosci Lett 2022; 773:136495. [DOI: 10.1016/j.neulet.2022.136495] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 02/08/2023]
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Pan QL, Lin FX, Liu N, Chen RC. The role of aquaporin 4 (AQP4) in spinal cord injury. Biomed Pharmacother 2021; 145:112384. [PMID: 34915672 DOI: 10.1016/j.biopha.2021.112384] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 12/13/2022] Open
Abstract
Aquaporin-4 (AQP-4) is an aquaporin composed of six helical transmembrane domains and two highly conserved ASN-pro-ALA (NPA) motifs. It is strongly expressed in rodent and human spinal cord tissues and plays a key role in the pathological process after SCI. After SCI, edema, glial scarring, and inflammation can accelerate the progression of injury and lead to deterioration of function. Many studies have reported that AQP-4 plays an important role in SCI. In particular, it plays an important role in secondary pathological processes (spinal cord edema, glial scar formation, and inflammatory response) after SCI. Loss of AQP-4 has been associated with reduced spinal edema and improved prognosis after SCI in mice. In addition, downregulation of AQP-4 reduces glial scar formation and the inflammatory response after SCI. There is a consensus from numerous studies that AQP-4 may be a potential target for SCI therapy, which guides the ongoing investigation for molecular therapy of SCI. Here, we review the structure of AQP-4, its expression in normal and damaged spinal cord, and its role in SCI, as well as discuss the theoretical basis for the treatment of SCI.
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Affiliation(s)
- Qi-Lin Pan
- Department of Spine Surgery, Ganzhou People's Hospital, Ganzhou 342800, PR China; The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou 342800, PR China
| | - Fei-Xiang Lin
- Department of Spine Surgery, Ganzhou People's Hospital, Ganzhou 342800, PR China; The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou 342800, PR China
| | - Ning Liu
- Department of Spine Surgery, Ganzhou People's Hospital, Ganzhou 342800, PR China; The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou 342800, PR China
| | - Rong-Chun Chen
- Department of Spine Surgery, Ganzhou People's Hospital, Ganzhou 342800, PR China; The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou 342800, PR China.
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Blaylock RL, Faria M. New concepts in the development of schizophrenia, autism spectrum disorders, and degenerative brain diseases based on chronic inflammation: A working hypothesis from continued advances in neuroscience research. Surg Neurol Int 2021; 12:556. [PMID: 34877042 PMCID: PMC8645502 DOI: 10.25259/sni_1007_2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 12/14/2022] Open
Abstract
This paper was written prompted by a poignant film about adolescent girl with schizophrenia who babysits for a younger girl in an isolated cabin. Schizophrenia is an illness that both authors are fascinated with and that they continue to study and investigate. There is now compelling evidence that schizophrenia is a very complex syndrome that involves numerous neural pathways in the brain, far more than just dopaminergic and serotonergic systems. One of the more popular theories in recent literature is that it represents a hypo glutaminergic deficiency of certain pathways, including thalamic ones. After much review of research and study in this area, we have concluded that most such theories contain a number of shortcomings. Most are based on clinical responses to certain drugs, particularly antipsychotic drugs affecting the dopaminergic neurotransmitters; thus, assuming dopamine release was the central cause of the psychotic symptoms of schizophrenia. The theory was limited in that dopamine excess could only explain the positive symptoms of the disorder. Antipsychotic medications have minimal effectiveness for the negative and cognitive symptoms associated with schizophrenia. It has been estimated that 20–30% of patients show either a partial or no response to antipsychotic medications. In addition, the dopamine hypothesis does not explain the neuroanatomic findings in schizophrenia.
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Affiliation(s)
| | - Miguel Faria
- Clinical Professor of Surgery (Neurosurgery, ret.) and Adjunct Professor of Medical History (ret.), Mercer University School of Medicine, United States
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Ding Z, Guo S, Luo L, Zheng Y, Gan S, Kang X, Wu X, Zhu S. Emerging Roles of Microglia in Neuro-vascular Unit: Implications of Microglia-Neurons Interactions. Front Cell Neurosci 2021; 15:706025. [PMID: 34712121 PMCID: PMC8546170 DOI: 10.3389/fncel.2021.706025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 09/10/2021] [Indexed: 12/20/2022] Open
Abstract
Microglia, which serve as the defensive interface of the nervous system, are activated in many neurological diseases. Their role as immune responding cells has been extensively studied in the past few years. Recent studies have demonstrated that neuronal feedback can be shaped by the molecular signals received and sent by microglia. Altered neuronal activity or synaptic plasticity leads to the release of various communication messages from neurons, which in turn exert effects on microglia. Research on microglia-neuron communication has thus expanded from focusing only on neurons to the neurovascular unit (NVU). This approach can be used to explore the potential mechanism of neurovascular coupling across sophisticated receptor systems and signaling cascades in health and disease. However, it remains unclear how microglia-neuron communication happens in the brain. Here, we discuss the functional contribution of microglia to synapses, neuroimmune communication, and neuronal activity. Moreover, the current state of knowledge of bidirectional control mechanisms regarding interactions between neurons and microglia are reviewed, with a focus on purinergic regulatory systems including ATP-P2RY12R signaling, ATP-adenosine-A1Rs/A2ARs, and the ATP-pannexin 1 hemichannel. This review aims to organize recent studies to highlight the multifunctional roles of microglia within the neural communication network in health and disease.
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Affiliation(s)
- Zhe Ding
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shaohui Guo
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Lihui Luo
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yueying Zheng
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Shuyuan Gan
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xianhui Kang
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaomin Wu
- Department of Anesthesiology, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Shengmei Zhu
- Department of Anesthesiology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Kobeissy FH, Shakkour Z, Hayek SE, Mohamed W, Gold MS, Wang KKW. Elevation of Pro-inflammatory and Anti-inflammatory Cytokines in Rat Serum after Acute Methamphetamine Treatment and Traumatic Brain Injury. J Mol Neurosci 2021; 72:158-168. [PMID: 34542809 DOI: 10.1007/s12031-021-01886-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/05/2021] [Indexed: 11/24/2022]
Abstract
The use of methamphetamine (METH) is a growing worldwide epidemic that bears grave societal implications. METH is known to exert its neurotoxic effects on the dopaminergic and serotonergic systems of the brain. In addition to this classical studied mechanism of damage, findings from our laboratory and others have shown that acute METH treatment and mechanical injury, i.e. traumatic brain injury (TBI), share common cell injury mechanism(s). Since neuro-inflammation is a signature event in TBI, we hypothesize that certain cytokine levels might also be altered in rat brain exposed to an acute METH insult. In this study, using a cytokine antibody array chip, we evaluated the serum levels of 19 cytokines in rats 24 h after exposure to a 40 mg/kg acute regimen of METH. Data were compared to rats subjected to experimental TBI using the controlled cortical impact (CCI) injury model and saline controls. Sandwich ELISA method was used to further validate some of the findings obtained from the antibody cytokine array. We confirmed that three major inflammatory-linked cytokines (IL-1β, IL-6, and IL-10) were elevated in the METH and TBI groups compared to the saline group. Such finding suggests the involvement of an inflammatory process in these brain insults, indicating that METH use is, in fact, a stressor to the immune system where systemic involvement of an altered cytokine profile may play a major role in mediating chemical brain injury after METH use.
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Affiliation(s)
- Firas H Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.,Program for Neurotrauma, Neuroproteomics, and Biomarkers Research, Gainesville, FL, USA.,Department of Emergency Medicine, University of Florida, Gainesville, FL, USA
| | - Zaynab Shakkour
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Samer El Hayek
- Department of Psychiatry, American University of Beirut, Beirut, Lebanon
| | - Wael Mohamed
- Clinical Pharmacology Department, Menoufia Medical School, Menoufia University, Al Minufya, Egypt.,Basic medical science department, Kulliyyah of Medicine, International Islamic University Malaysia, Kuantan, Pahang, Malaysia
| | - Mark S Gold
- Washington University School of Medicine, Department of Psychiatry, and National Council, Washington University in St. Louis, Institute for Public Health, St. Louis, MO, USA
| | - Kevin K W Wang
- Program for Neurotrauma, Neuroproteomics, and Biomarkers Research, Gainesville, FL, USA. .,Department of Emergency Medicine, University of Florida, Gainesville, FL, USA.
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Liu DL, Hong Z, Li JY, Yang YX, Chen C, Du JR. Phthalide derivative CD21 attenuates tissue plasminogen activator-induced hemorrhagic transformation in ischemic stroke by enhancing macrophage scavenger receptor 1-mediated DAMP (peroxiredoxin 1) clearance. J Neuroinflammation 2021; 18:143. [PMID: 34162400 PMCID: PMC8223381 DOI: 10.1186/s12974-021-02170-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 05/11/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Hemorrhagic transformation (HT) is a critical issue in thrombolytic therapy in acute ischemic stroke. Damage-associated molecular pattern (DAMP)-stimulated sterile neuroinflammation plays a crucial role in the development of thrombolysis-associated HT. Our previous study showed that the phthalide derivative CD21 attenuated neuroinflammation and brain injury in rodent models of ischemic stroke. The present study explored the effects and underlying mechanism of action of CD21 on tissue plasminogen activator (tPA)-induced HT in a mouse model of transient middle cerebral artery occlusion (tMCAO) and cultured primary microglial cells. METHODS The tMCAO model was induced by 2 h occlusion of the left middle cerebral artery with polylysine-coated sutures in wildtype (WT) mice and macrophage scavenger receptor 1 knockout (MSR1-/-) mice. At the onset of reperfusion, tPA (10 mg/kg) was intravenously administered within 30 min, followed by an intravenous injection of CD21 (13.79 mg/kg/day). Neuropathological changes were detected in mice 3 days after surgery. The effect of CD21 on phagocytosis of the DAMP peroxiredoxin 1 (Prx1) in lysosomes was observed in cultured primary microglial cells from brain tissues of WT and MSR1-/- mice. RESULTS Seventy-two hours after brain ischemia, CD21 significantly attenuated neurobehavioral dysfunction and infarct volume. The tPA-infused group exhibited more severe brain dysfunction and hemorrhage. Compared with tPA alone, combined treatment with tPA and CD21 significantly attenuated ischemic brain injury and hemorrhage. Combined treatment significantly decreased Evans blue extravasation, matrix metalloproteinase 9 expression and activity, extracellular Prx1 content, proinflammatory cytokine mRNA levels, glial cells, and Toll-like receptor 4 (TLR4)/nuclear factor κB (NF-κB) pathway activation and increased the expression of tight junction proteins (zonula occludens-1 and claudin-5), V-maf musculoaponeurotic fibrosarcoma oncogene homolog B, and MSR1. MSR1 knockout significantly abolished the protective effect of CD21 against tPA-induced HT in tMCAO mice. Moreover, the CD21-induced phagocytosis of Prx1 was MSR1-dependent in cultured primary microglial cells from WT and MSR1-/- mice, respectively. CONCLUSION The phthalide derivative CD21 attenuated tPA-induced HT in acute ischemic stroke by promoting MSR1-induced DAMP (Prx1) clearance and inhibition of the TLR4/NF-κB pathway and neuroinflammation.
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Affiliation(s)
- Dong-Ling Liu
- Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, PR China
| | - Zhi Hong
- Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, PR China
| | - Jing-Ying Li
- Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, PR China
| | - Yu-Xin Yang
- Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, PR China.,Present address: The PRIVIS TECHNOLOGY Co., Ltd., Chengdu, 610041, PR China
| | - Chu Chen
- Sichuan Academy of Chinese Medicine Sciences, Chengdu, 610041, PR China
| | - Jun-Rong Du
- Department of Pharmacology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, PR China.
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Shiratori-Hayashi M, Yamaguchi C, Eguchi K, Shiraishi Y, Kohno K, Mikoshiba K, Inoue K, Nishida M, Tsuda M. Astrocytic STAT3 activation and chronic itch require IP 3R1/TRPC-dependent Ca 2+ signals in mice. J Allergy Clin Immunol 2021; 147:1341-1353. [PMID: 32781002 DOI: 10.1016/j.jaci.2020.06.039] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 05/26/2020] [Accepted: 06/16/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND Chronic itch is a debilitating symptom of inflammatory skin diseases, but the underlying mechanism is poorly understood. We have recently demonstrated that astrocytes in the spinal dorsal horn become reactive in models of atopic and contact dermatitis via activation of the transcription factor signal transducer and activator of transcription 3 (STAT3) and critically contribute to chronic itch. In general, STAT3 is transiently activated; however, STAT3 activation in reactive astrocytes of chronic itch model mice persistently occurs via an unknown mechanism. OBJECTIVE We aimed to determine the mechanisms of persistent activation of astrocytic STAT3 in chronic itch conditions. METHODS To determine the factors that are required for persistent activation of astrocytic STAT3, Western blotting and calcium imaging with cultured astrocytes or spinal cord slices were performed. Thereafter, chronic itch model mice were used for genetic and behavioral experiments to confirm the role of the factors determined to mediate persistent STAT3 activation from in vitro and ex vivo experiments in chronic itch. RESULTS IP3 receptor type 1 (IP3R1) knockdown in astrocytes suppressed IL-6-induced persistent STAT3 activation and expression of lipocalin-2 (LCN2), an astrocytic STAT3-dependent inflammatory factor that is required for chronic itch. IP3R1-dependent astrocytic Ca2+ responses involved Ca2+ influx through the cation channel transient receptor potential canonical (TRPC), which was required for persistent STAT3 activation evoked by IL-6. IL-6 expression was upregulated in dorsal root ganglion neurons in a mouse model of chronic itch. Dorsal root ganglion neuron-specific IL-6 knockdown, spinal astrocyte-specific IP3R1 knockdown, and pharmacologic spinal TRPC inhibition attenuated LCN2 expression and chronic itch. CONCLUSION Our findings suggest that IP3R1/TRPC channel-mediated Ca2+ signals elicited by IL-6 in astrocytes are necessary for persistent STAT3 activation, LCN2 expression, and chronic itch, and they may also provide new targets for therapeutic intervention.
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Affiliation(s)
- Miho Shiratori-Hayashi
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Chiharu Yamaguchi
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazushi Eguchi
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuto Shiraishi
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Keita Kohno
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Katsuhiko Mikoshiba
- RIKEN Center for Biosystems Dynamics Research, Hyogo, Japan; Faculty of Science, Toho University, Chiba, Japan; Shanghai Institute of Immunochemical Studies, Shanghai Tech University, Shanghai, China
| | - Kazuhide Inoue
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Motohiro Nishida
- Department of Translational Pharmaceutical Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan; Division of Cardiocirculatory Signaling, National Institute for Physiological Sciences and Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Aichi, Japan
| | - Makoto Tsuda
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.
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Chronic exposure to IL-6 induces a desensitized phenotype of the microglia. J Neuroinflammation 2021; 18:31. [PMID: 33482848 PMCID: PMC7821504 DOI: 10.1186/s12974-020-02063-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 12/16/2020] [Indexed: 12/14/2022] Open
Abstract
Background When the homeostasis of the central nervous system (CNS) is altered, microglial cells become activated displaying a wide range of phenotypes that depend on the specific site, the nature of the activator, and particularly the microenvironment generated by the lesion. Cytokines are important signals involved in the modulation of the molecular microenvironment and hence play a pivotal role in orchestrating microglial activation. Among them, interleukin-6 (IL-6) is a pleiotropic cytokine described in a wide range of pathological conditions as a potent inducer and modulator of microglial activation, but with contradictory results regarding its detrimental or beneficial functions. The objective of the present study was to evaluate the effects of chronic IL-6 production on the immune response associated with CNS-axonal anterograde degeneration. Methods The perforant pathway transection (PPT) paradigm was used in transgenic mice with astrocyte-targeted IL6-production (GFAP-IL6Tg). At 2, 3, 7, 14, and 21 days post-lesion, the hippocampal areas were processed for immunohistochemistry, flow cytometry, and protein microarray. Results An increase in the microglia/macrophage density was observed in GFAP-IL6Tg animals in non-lesion conditions and at later time-points after PPT, associated with higher microglial proliferation and a major monocyte/macrophage cell infiltration. Besides, in homeostasis, GFAP-IL6Tg showed an environment usually linked with an innate immune response, with more perivascular CD11b+/CD45high/MHCII+/CD86+ macrophages, higher T cell infiltration, and higher IL-10, IL-13, IL-17, and IL-6 production. After PPT, WT animals show a change in microglia phenotype expressing MHCII and co-stimulatory molecules, whereas transgenic mice lack this shift. This lack of response in the GFAP-IL6Tg was associated with lower axonal sprouting. Conclusions Chronic exposure to IL-6 induces a desensitized phenotype of the microglia. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-020-02063-1.
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Ma G, Pan Z, Kong L, Du G. Neuroinflammation in hemorrhagic transformation after tissue plasminogen activator thrombolysis: Potential mechanisms, targets, therapeutic drugs and biomarkers. Int Immunopharmacol 2020; 90:107216. [PMID: 33296780 DOI: 10.1016/j.intimp.2020.107216] [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: 08/26/2020] [Revised: 10/18/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022]
Abstract
Hemorrhagic transformation (HT) is a common and serious complication following ischemic stroke, especially after tissue plasminogen activator (t-PA) thrombolysis, which is associated with increased mortality and disability. Due to the unknown mechanisms and targets of HT, there are no effective therapeutic drugs to decrease the incidence of HT. In recent years, many studies have found that neuroinflammation is closely related to the occurrence and development of HT after t-PA thrombolysis, including glial cell activation in the brain, peripheral inflammatory cell infiltration and the release of inflammatory factors, involving inflammation-related targets such as NF-κB, MAPK, HMGB1, TLR4 and NLRP3. Some drugs with anti-inflammatory activity have been shown to protect the BBB and reduce the risk of HT in preclinical experiments and clinical trials, including minocycline, fingolimod, tacrolimus, statins and some natural products. In addition, the changes in MMP-9, VAP-1, NLR, sICAM-1 and other inflammatory factors are closely related to the occurrence of HT, which may be potential biomarkers for the diagnosis and prognosis of HT. In this review, we summarize the potential inflammation-related mechanisms, targets, therapeutic drugs, and biomarkers associated with HT after t-PA thrombolysis and discuss the relationship between neuroinflammation and HT, which provides a reference for research on the mechanisms, prevention and treatment drugs, diagnosis and prognosis of HT.
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Affiliation(s)
- Guodong Ma
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zirong Pan
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Linglei Kong
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Centre for Pharmaceutical Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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Nguyen TTD, Le NQK, Ho QT, Phan DV, Ou YY. TNFPred: identifying tumor necrosis factors using hybrid features based on word embeddings. BMC Med Genomics 2020; 13:155. [PMID: 33087125 PMCID: PMC7579990 DOI: 10.1186/s12920-020-00779-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Background Cytokines are a class of small proteins that act as chemical messengers and play a significant role in essential cellular processes including immunity regulation, hematopoiesis, and inflammation. As one important family of cytokines, tumor necrosis factors have association with the regulation of a various biological processes such as proliferation and differentiation of cells, apoptosis, lipid metabolism, and coagulation. The implication of these cytokines can also be seen in various diseases such as insulin resistance, autoimmune diseases, and cancer. Considering the interdependence between this kind of cytokine and others, classifying tumor necrosis factors from other cytokines is a challenge for biological scientists. Methods In this research, we employed a word embedding technique to create hybrid features which was proved to efficiently identify tumor necrosis factors given cytokine sequences. We segmented each protein sequence into protein words and created corresponding word embedding for each word. Then, word embedding-based vector for each sequence was created and input into machine learning classification models. When extracting feature sets, we not only diversified segmentation sizes of protein sequence but also conducted different combinations among split grams to find the best features which generated the optimal prediction. Furthermore, our methodology follows a well-defined procedure to build a reliable classification tool. Results With our proposed hybrid features, prediction models obtain more promising performance compared to seven prominent sequenced-based feature kinds. Results from 10 independent runs on the surveyed dataset show that on an average, our optimal models obtain an area under the curve of 0.984 and 0.998 on 5-fold cross-validation and independent test, respectively. Conclusions These results show that biologists can use our model to identify tumor necrosis factors from other cytokines efficiently. Moreover, this study proves that natural language processing techniques can be applied reasonably to help biologists solve bioinformatics problems efficiently.
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Affiliation(s)
| | - Nguyen-Quoc-Khanh Le
- Professional Master Program in Artificial Intelligence in Medicine, College of Medicine, Taipei Medical University, Taipei City, 106, Taiwan.,Research Center for Artificial Intelligence in Medicine, Taipei Medical University, Taipei City, 106, Taiwan
| | - Quang-Thai Ho
- Department of Computer Science and Engineering, Yuan Ze University, Taoyuan, 32003, Taiwan
| | - Dinh-Van Phan
- University of Economics, The University of Danang, Danang, 550000, Vietnam
| | - Yu-Yen Ou
- Department of Computer Science and Engineering, Yuan Ze University, Taoyuan, 32003, Taiwan.
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Abd-El-Basset EM, Rao MS, Alsaqobi A. Interferon-Gamma and Interleukin-1Beta Enhance the Secretion of Brain-Derived Neurotrophic Factor and Promotes the Survival of Cortical Neurons in Brain Injury. Neurosci Insights 2020; 15:2633105520947081. [PMID: 32776009 PMCID: PMC7391446 DOI: 10.1177/2633105520947081] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/14/2020] [Indexed: 12/28/2022] Open
Abstract
Neuro-inflammation is associated with the production of cytokines, which influence neuronal and glial functions. Although the proinflammatory cytokines interferon-γ (IFN-γ) and interleukin-1Beta (IL-1β) are thought to be the major mediators of neuro-inflammation, their role in brain injury remains ill-defined. The objective of this study was to examine the effect of IFN-γ and IL-1β on survival of cortical neurons in stab wound injury in mice. A stab wound injury was made in the cortex of male BALB/c mice. Injured mice (I) were divide into IFN-γ and IL-1β treatment experiments. Mice in I + IFN-γ group were treated with IFN-γ (ip, 10 µg/kg/day) for 1, 3 and 7 days and mice in I + IL-1β group were treated with 5 IP injection of IL-1β (0.5 µg /12 h). Appropriate control mice were maintained for comparison. Immunostaining of frozen brain sections for astrocytes (GFAP), microglia (Iba-1) and Fluoro-Jade B staining for degenerating neurons were used. Western blotting and ELISA for brain-derived neurotrophic factor (BDNF) were done on the tissues isolated from the injured sites. Results showed a significant increase in the number of both astrocytes and microglia in I + IFN-γ and I + IL-1β groups. There were no significant changes in the number of astrocytes or microglia in noninjury groups (NI) treated with IFN-γ or IL-1β. The number of degenerating neurons significantly decreased in I + IFN-γ and I + IL-1β groups. GFAP and BDNF levels were significantly increased in I + IFN-γ and I + IL-1β groups. Interferon-γ and IL-1β induce astrogliosis, microgliosis, enhance the secretion of BDNF, one of the many neurotrophic factors after brain injury, and promote the survival of cortical neurons in stab wound brain injury.
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Ortiz-Guerrero G, Gonzalez-Reyes RE, de-la-Torre A, Medina-Rincón G, Nava-Mesa MO. Pathophysiological Mechanisms of Cognitive Impairment and Neurodegeneration by Toxoplasma gondii Infection. Brain Sci 2020; 10:brainsci10060369. [PMID: 32545619 PMCID: PMC7349234 DOI: 10.3390/brainsci10060369] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/09/2020] [Accepted: 06/11/2020] [Indexed: 12/12/2022] Open
Abstract
Toxoplasma gondii is an obligate intracellular parasite considered one of the most successful pathogens in the world, owing to its ability to produce long-lasting infections and to persist in the central nervous system (CNS) in most warm-blooded animals, including humans. This parasite has a preference to invade neurons and affect the functioning of glial cells. This could lead to neurological and behavioral changes associated with cognitive impairment. Although several studies in humans and animal models have reported controversial results about the relationship between toxoplasmosis and the onset of dementia as a causal factor, two recent meta-analyses have shown a relative association with Alzheimer’s disease (AD). AD is characterized by amyloid-β (Aβ) peptide accumulation, neurofibrillary tangles, and neuroinflammation. Different authors have found that toxoplasmosis may affect Aβ production in brain areas linked with memory functioning, and can induce a central immune response and neurotransmitter imbalance, which in turn, affect the nervous system microenvironment. In contrast, other studies have revealed a reduction of Aβ plaques and hyperphosphorylated tau protein formation in animal models, which might cause some protective effects. The aim of this article is to summarize and review the newest data in regard to different pathophysiological mechanisms of cerebral toxoplasmosis and their relationship with the development of AD and cognitive impairment. All these associations should be investigated further through clinical and experimental studies.
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Affiliation(s)
- Gloria Ortiz-Guerrero
- Department of Neurology, University of Kansas Medical Center, Kansas City, KS 66160, USA;
| | - Rodrigo E. Gonzalez-Reyes
- GI en Neurociencias-NeURos, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia; (R.E.G.-R.); (A.d.-l.-T.); (G.M.-R.)
| | - Alejandra de-la-Torre
- GI en Neurociencias-NeURos, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia; (R.E.G.-R.); (A.d.-l.-T.); (G.M.-R.)
| | - German Medina-Rincón
- GI en Neurociencias-NeURos, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia; (R.E.G.-R.); (A.d.-l.-T.); (G.M.-R.)
| | - Mauricio O. Nava-Mesa
- GI en Neurociencias-NeURos, Escuela de Medicina y Ciencias de la Salud, Universidad del Rosario, Bogotá 111221, Colombia; (R.E.G.-R.); (A.d.-l.-T.); (G.M.-R.)
- Correspondence: ; Tel.: +57-1-2970200 (ext. 3354); Fax: +571-3440351
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Chiarini A, Armato U, Hu P, Dal Prà I. CaSR Antagonist (Calcilytic) NPS 2143 Hinders the Release of Neuroinflammatory IL-6, Soluble ICAM-1, RANTES, and MCP-2 from Aβ-Exposed Human Cortical Astrocytes. Cells 2020; 9:cells9061386. [PMID: 32498476 PMCID: PMC7349863 DOI: 10.3390/cells9061386] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/29/2020] [Accepted: 05/29/2020] [Indexed: 02/07/2023] Open
Abstract
Available evidence shows that human cortical neurons’ and astrocytes’ calcium-sensing receptors (CaSRs) bind Amyloid-beta (Aβ) oligomers triggering the overproduction/oversecretion of several Alzheimer’s disease (AD) neurotoxins—effects calcilytics suppress. We asked whether Aβ•CaSR signaling might also play a direct pro-neuroinflammatory role in AD. Cortical nontumorigenic adult human astrocytes (NAHAs) in vitro were untreated (controls) or treated with Aβ25–35 ± NPS 2143 (a calcilytic) and any proinflammatory agent in their protein lysates and growth media assayed via antibody arrays, enzyme-linked immunosorbent assays (ELISAs), and immunoblots. Results show Aβ•CaSR signaling upregulated the synthesis and release/shedding of proinflammatory interleukin (IL)-6, intercellular adhesion molecule-1 (ICAM-1) (holoprotein and soluble [s] fragment), Regulated upon Activation, normal T cell Expressed and presumably Secreted (RANTES), and monocyte chemotactic protein (MCP)-2. Adding NPS 2143 (i) totally suppressed IL-6′s oversecretion while remarkably reducing the other agents’ over-release; and (ii) more effectively than Aβ alone increased over controls the four agents’ distinctive intracellular accumulation. Conversely, NPS 2143 did not alter Aβ-induced surges in IL-1β, IL-3, IL-8, and IL-16 secretion, consequently revealing their Aβ•CaSR signaling-independence. Finally, Aβ25–35 ± NPS 2143 treatments left unchanged MCP-1′s and TIMP-2′s basal expression. Thus, NAHAs Aβ•CaSR signaling drove four proinflammatory agents’ over-release that NPS 2143 curtailed. Therefore, calcilytics would also abate NAHAs’ Aβ•CaSR signaling direct impact on AD’s neuroinflammation.
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Affiliation(s)
- Anna Chiarini
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics and Gynecology, Medical School, University of Verona, Veneto, 37134 Verona, Italy; (U.A.); (P.H.)
- Correspondence: (A.C.); (I.D.P.); Tel.: +39-045-802-7646 (A.C.); +39-045-802-7161 (I.D.P)
| | - Ubaldo Armato
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics and Gynecology, Medical School, University of Verona, Veneto, 37134 Verona, Italy; (U.A.); (P.H.)
- Burns Department, Shenzhen Second People’s Hospital, University of Shenzhen, Shenzhen 518000, China
| | - Peng Hu
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics and Gynecology, Medical School, University of Verona, Veneto, 37134 Verona, Italy; (U.A.); (P.H.)
| | - Ilaria Dal Prà
- Human Histology and Embryology Section, Department of Surgery, Dentistry, Pediatrics and Gynecology, Medical School, University of Verona, Veneto, 37134 Verona, Italy; (U.A.); (P.H.)
- Burns Department, Shenzhen Second People’s Hospital, University of Shenzhen, Shenzhen 518000, China
- Correspondence: (A.C.); (I.D.P.); Tel.: +39-045-802-7646 (A.C.); +39-045-802-7161 (I.D.P)
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30
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Cavestro C, Ferrero M, Mandrino S, Di Tavi M, Rota E. Novelty in Inflammation and Immunomodulation in Migraine. Curr Pharm Des 2020; 25:2919-2936. [PMID: 31686633 DOI: 10.2174/1381612825666190709204107] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Accepted: 06/30/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Migraine is a diffuse and disabling disease. Its pathophysiology is complex and involves both central and peripheral dysfunctions. OBJECTIVE This review will discuss the pathogenesis of migraine from the origin of the neuro-inflammatory theory, to the modern pathophysiological model and the latest therapies. METHODS PUBMED and EMBASE (up to May 2019) were searched for: migraine, inflammation, immunomodulation. An additional search was carried out from the bibliography of previous review articles. RESULTS Migraine was thought to be mainly a vascular disorder, according to the so-called "vascular theory". Based on animal models, a new hypothesis called "the neuro-inflammatory" was conceived at the end of the 20th century. The growing knowledge about the trigeminovascular system and its role in the inflammatory-pain pathway, allowed to identify other specific neurotransmitters, such as the Calcitonin Gene-Related Peptide and Pituitary Adenylate Cyclase-Activating Peptide. Evidence was provided that the inflammatory-pain system could become sensitised and, due to this sensitisation, the pain could also perpetuate, even in the absence of any triggers of the migraine attack. At last, brain immune cells modification during cortical spreading depression in migraine was demonstrated, along with the existence and function of the glymphatic system. The better comprehension of the immune system abnormalities allowed the development of new immunomodulating drugs: the monoclonal antibodies against the CGRP or the CGRP receptor. Moreover, new insights into the molecular mechanism of CGRP, and the function of C-fibres and Aδ-fibres, highlighted the mechanism of action of Botulinum Toxin type A in the treatment of chronic migraine.
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Affiliation(s)
- Cinzia Cavestro
- Department of Neurology, Headache Centre, ASL CN2, Alba, Italy
| | | | - Silvia Mandrino
- Department of Neurology, Headache Centre, ASL CN2, Alba, Italy
| | - Marco Di Tavi
- Department of Neurology, Headache Centre, ASL CN2, Alba, Italy
| | - Eugenia Rota
- Neurology Unit, San Giacomo Hospital, Novi Ligure, ASL AL, Italy
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31
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Maia-Farias A, Lima CM, Freitas PSL, Diniz DG, Rodrigues APD, Quaresma JAS, Diniz CWP, Diniz JA. Early and late neuropathological features of meningoencephalitis associated with Maraba virus infection. ACTA ACUST UNITED AC 2020; 53:e8604. [PMID: 32294697 PMCID: PMC7162580 DOI: 10.1590/1414-431x20208604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 01/06/2020] [Indexed: 11/22/2022]
Abstract
Maraba virus is a member of the genus Vesiculovirus of the Rhabdoviridae family that was isolated in 1983 from sandflies captured in the municipality of Maraba, state of Pará, Amazônia, Brazil. Despite 30 years having passed since its isolation, little is known about the neuropathology induced by the Maraba virus. Accordingly, in this study the histopathological features, inflammatory glial changes, cytokine concentrations, and nitric oxide activity in the encephalon of adult mice subjected to Maraba virus nostril infection were evaluated. The results showed that 6 days after intranasal inoculation, severe neuropathological-associated disease signs appeared, including edema, necrosis and pyknosis of neurons, generalized congestion of encephalic vessels, and intra- and perivascular meningeal lymphocytic infiltrates in several brain regions. Immunolabeling of viral antigens was observed in almost all central nervous system (CNS) areas and this was associated with intense microglial activation and astrogliosis. Compared to control animals, infected mice showed significant increases in interleukin (IL)-6, tumor necrosis factor (TNF)-α, interferon (INF)-γ, MCP-1, nitric oxide, and encephalic cytokine levels. We suggest that an exacerbated inflammatory response in several regions of the CNS of adult BALB/c mice might be responsible for their deaths.
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Affiliation(s)
- A Maia-Farias
- Laboratório de Microscopia Eletrônica, Instituto Evandro Chagas, Belém, PA, Brasil
| | - C M Lima
- Laboratório de Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João Barros Barreto, Universidade Federal do Pará, Belém, PA, Brasil
| | - P S L Freitas
- Laboratório de Microscopia Eletrônica, Instituto Evandro Chagas, Belém, PA, Brasil
| | - D G Diniz
- Laboratório de Microscopia Eletrônica, Instituto Evandro Chagas, Belém, PA, Brasil.,Laboratório de Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João Barros Barreto, Universidade Federal do Pará, Belém, PA, Brasil
| | - A P D Rodrigues
- Laboratório de Microscopia Eletrônica, Instituto Evandro Chagas, Belém, PA, Brasil
| | - J A S Quaresma
- Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, PA, Brasil
| | - C W Picanço Diniz
- Laboratório de Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João Barros Barreto, Universidade Federal do Pará, Belém, PA, Brasil
| | - J A Diniz
- Laboratório de Microscopia Eletrônica, Instituto Evandro Chagas, Belém, PA, Brasil.,Laboratório de Neurodegeneração e Infecção, Instituto de Ciências Biológicas, Hospital Universitário João Barros Barreto, Universidade Federal do Pará, Belém, PA, Brasil
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Bai Q, Xue M, Yong VW. Microglia and macrophage phenotypes in intracerebral haemorrhage injury: therapeutic opportunities. Brain 2020; 143:1297-1314. [PMID: 31919518 DOI: 10.1093/brain/awz393] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/19/2019] [Accepted: 10/20/2019] [Indexed: 01/24/2023] Open
Abstract
Abstract
The prognosis of intracerebral haemorrhage continues to be devastating despite much research into this condition. A prominent feature of intracerebral haemorrhage is neuroinflammation, particularly the excessive representation of pro-inflammatory CNS-intrinsic microglia and monocyte-derived macrophages that infiltrate from the circulation. The pro-inflammatory microglia/macrophages produce injury-enhancing factors, including inflammatory cytokines, matrix metalloproteinases and reactive oxygen species. Conversely, the regulatory microglia/macrophages with potential reparative and anti-inflammatory roles are outcompeted in the early stages after intracerebral haemorrhage, and their beneficial roles appear to be overwhelmed by pro-inflammatory microglia/macrophages. In this review, we describe the activation of microglia/macrophages following intracerebral haemorrhage in animal models and clinical subjects, and consider their multiple mechanisms of cellular injury after haemorrhage. We review strategies and medications aimed at suppressing the pro-inflammatory activities of microglia/macrophages, and those directed at elevating the regulatory properties of these myeloid cells after intracerebral haemorrhage. We consider the translational potential of these medications from preclinical models to clinical use after intracerebral haemorrhage injury, and suggest that several approaches still lack the experimental support necessary for use in humans. Nonetheless, the preclinical data support the use of deactivator or inhibitor of pro-inflammatory microglia/macrophages, whilst enhancing the regulatory phenotype, as part of the therapeutic approach to improve the prognosis of intracerebral haemorrhage.
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Affiliation(s)
- Qian Bai
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Department of Anesthesiology, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, Henan, China
| | - Mengzhou Xue
- Department of Cerebrovascular Diseases, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
- Henan Medical Key Laboratory of Translational Cerebrovascular Diseases, Zhengzhou, Henan, China
| | - V Wee Yong
- Hotchkiss Brain Institute and Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
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Karunakaran KB, Chaparala S, Ganapathiraju MK. Potentially repurposable drugs for schizophrenia identified from its interactome. Sci Rep 2019; 9:12682. [PMID: 31481665 PMCID: PMC6722087 DOI: 10.1038/s41598-019-48307-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 07/11/2019] [Indexed: 12/13/2022] Open
Abstract
We previously presented the protein-protein interaction network of schizophrenia associated genes, and from it, the drug-protein interactome which showed the drugs that target any of the proteins in the interactome. Here, we studied these drugs further to identify whether any of them may potentially be repurposable for schizophrenia. In schizophrenia, gene expression has been described as a measurable aspect of the disease reflecting the action of risk genes. We studied each of the drugs from the interactome using the BaseSpace Correlation Engine, and shortlisted those that had a negative correlation with differential gene expression of schizophrenia. This analysis resulted in 12 drugs whose differential gene expression (drug versus normal) had an anti-correlation with differential expression for schizophrenia (disorder versus normal). Some of these drugs were already being tested for their clinical activity in schizophrenia and other neuropsychiatric disorders. Several proteins in the protein interactome of the targets of several of these drugs were associated with various neuropsychiatric disorders. The network of genes with opposite drug-induced versus schizophrenia-associated expression profiles were significantly enriched in pathways relevant to schizophrenia etiology and GWAS genes associated with traits or diseases that had a pathophysiological overlap with schizophrenia. Drugs that targeted the same genes as the shortlisted drugs, have also demonstrated clinical activity in schizophrenia and other related disorders. This integrated computational analysis will help translate insights from the schizophrenia drug-protein interactome to clinical research - an important step, especially in the field of psychiatric drug development which faces a high failure rate.
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Affiliation(s)
- Kalyani B Karunakaran
- Supercomputer Education and Research Centre, Indian Institute of Science, Indian Institute of Science, Bengaluru, India
| | | | - Madhavi K Ganapathiraju
- Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, USA.
- Intelligent Systems Program, University of Pittsburgh, Pittsburgh, USA.
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Saini N, Singh D, Sandhir R. Bacopa monnieri prevents colchicine-induced dementia by anti-inflammatory action. Metab Brain Dis 2019; 34:505-518. [PMID: 30604025 DOI: 10.1007/s11011-018-0332-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 10/18/2018] [Indexed: 01/08/2023]
Abstract
Inflammation is considered as an early event in the development of Alzheimer's disease (AD) that precedes the formation of Aβ plaques and neurofibrillary tangles. Therefore, strategies aimed at attenuating inflammation by phytochemicals may be a potential therapeutic intervention against AD. The present study was designed to evaluate if colchicine-induced inflammation and Aβ production could be prevented by Bacopa monnieri (BM) supplementation. Dementia was induced by a single intracerebroventicular injection of colchicine (15 μg/5 μl), whereas, BM extract was administered orally (50 mg/kg body weight, daily) for 15 days. Assessment of cognitive functions using Morris water maze revealed deficits in colchicine administered animals. This was accompanied by significant increase in oxidative stress in terms of accentuated ROS and NO production. Expression of pro-inflammatory cytokines (IL-6, TNF-α) and chemokine (MCP-1) increased in the brain regions. Furthermore, COX-2 and iNOS expression also increased significantly in the brain regions of colchicine-administered animals. In addition, BACE-1 activity increased in the colchicine treated animals, which was accompanied by enhanced Aβ production. On the other hand, BM supplementation was able to improve cognitive functions, suppress Aβ formation by reducing BACE-1 activity. Inflammatory and oxidative stress markers were attenuated in the brain regions of BM supplemented animals. Taken together, the findings reveal that BM reverses colchicine-induced dementia by its anti-inflammatory and anti-oxidant action suggesting that it may be an effective therapeutic intervention to ameliorate progression of AD.
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Affiliation(s)
- Neetu Saini
- Department of Biochemistry, Panjab University, Chandigarh, 160014, India
- Department of Zoology, Punjabi University, Patiala, 147002, India
| | - Devinder Singh
- Department of Zoology, Punjabi University, Patiala, 147002, India
| | - Rajat Sandhir
- Department of Biochemistry, Panjab University, Chandigarh, 160014, India.
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Casault C, Al Sultan AS, Banoei M, Couillard P, Kramer A, Winston BW. Cytokine Responses in Severe Traumatic Brain Injury: Where There Is Smoke, Is There Fire? Neurocrit Care 2019; 30:22-32. [PMID: 29569129 DOI: 10.1007/s12028-018-0522-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This scoping review will discuss the basic functions and prognostic significance of the commonly researched cytokines implicated in severe traumatic brain injury (sTBI), including tumour necrosis factor-α (TNF-α), interleukin-1β (IL-1β), IL-6, tissue inhibitor of matrix metalloproteinases-1 (TIMP-1), transforming growth factor-β (TGF-β), substance P, and soluble CD40 ligand (sCD40L). A scoping review was undertaken with an electronic search for articles from the Ovid MEDLINE, PUBMED and EMBASE databases from 1995 to 2017. Inclusion criteria were original research articles, and reviews including both animal models and human clinical studies of acute (< 3 months) sTBI. Selected articles included both isolated sTBI and sTBI with systemic injury. After applying the inclusion criteria and removing duplicates, 141 full-text articles, 126 original research articles and 15 review articles, were evaluated in compiling this review paper. A single reviewer, CC, completed the review in two phases. During the first phase, titles and abstracts of selected articles were reviewed for inclusion. A second evaluation was then conducted on the full text of all selected articles to ensure relevancy. From our current understanding of the literature, it is unlikely a single biomarker will be sufficient in accurately prognosticating patients with sTBI. Intuitively, a more severe injury will demonstrate higher levels of inflammatory cytokines which may correlate as a marker of severe injury. This does not mean, necessarily, these cytokines have a direct and causal role in the poor outcome of the patient. Further research is required to better delineate the complex systemic inflammatory and CNS interactions that occur during sTBI before they can be applied as a reliable prognostic tool.
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Affiliation(s)
- Colin Casault
- Department of Critical Care Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada. .,Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada.
| | - Abdulaziz S Al Sultan
- Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Mohammad Banoei
- Department of Critical Care Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada
| | - Philippe Couillard
- Department of Critical Care Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.,Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Andreas Kramer
- Department of Critical Care Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.,Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Brent W Winston
- Department of Critical Care Medicine, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1N4, Canada.,Departments of Medicine and Biochemistry and Molecular Biology, University of Calgary, Calgary, AB, Canada
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Abstract
Perinatal arterial ischemic stroke is a relatively common and serious neurologic disorder that can affect the fetus, the preterm, and the term-born infant. It carries significant long-term disabilities. Herein we describe the current understanding of its etiology, pathophysiology and classification, different presentations, and optimal early management. We discuss the role of different brain imaging modalities in defining the extent of lesions and the impact this has on the prediction of outcomes. In recent years there has been progress in treatments, making early diagnosis and the understanding of likely morbidities imperative. An overview is given of the range of possible outcomes and optimal approaches to follow-up and support for the child and their family in the light of present knowledge.
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Siqueira-Lima PS, Passos FR, Lucchese AM, Menezes IR, Coutinho HD, Lima AA, Zengin G, Quintans JS, Quintans-Júnior LJ. Central nervous system and analgesic profiles of Lippia genus. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2019. [DOI: 10.1016/j.bjp.2018.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Zakharov S, Hlusicka J, Nurieva O, Kotikova K, Lischkova L, Kacer P, Kacerova T, Urban P, Vaneckova M, Seidl Z, Diblik P, Kuthan P, Heissigerova J, Lesovsky J, Rulisek J, Vojtova L, Hubacek JA, Navratil T. Neuroinflammation markers and methyl alcohol induced toxic brain damage. Toxicol Lett 2018; 298:60-69. [DOI: 10.1016/j.toxlet.2018.05.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 04/22/2018] [Accepted: 05/03/2018] [Indexed: 12/29/2022]
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Adult Fmr1 knockout mice present with deficiencies in hippocampal interleukin-6 and tumor necrosis factor-α expression. Neuroreport 2018; 28:1246-1249. [PMID: 28915148 DOI: 10.1097/wnr.0000000000000905] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fragile X syndrome (FXS) is a neurodevelopmental disorder caused by a single genetic mutation in the FMR1 gene. Mutations in the FMR1 gene are the largest monogenic cause of autism spectrum disorder (ASD), and thus both disorders share many of the same cognitive and behavioral impairments. There is increasing evidence suggesting that dysregulated immune responses play a role in the pathophysiology of ASD; however, the association between FXS and altered immunity requires further investigation. This study examined whether Fmr1 knockout (KO) and wild-type mice on a FVB/NJ background strain had altered cytokine expression at baseline levels in the hippocampus. Results showed Fmr1 KO mice to have decreased proinflammatory cytokine hippocampal mRNA expression, specifically interleukin (IL)-6 and tumor necrosis factor-α, compared with wild-type mice. However, no differences were detected in the expression levels of IL-1β, MCP-1, interferon-γ, or IL-10. Despite the high comorbidity between FXS and ASD, these results suggest that the Fmr1 KO mouse does not mimic the increased proinflammatory cytokine expression commonly found in ASD mouse models and patients. Further investigation of the immune profile of the Fmr1 KO mouse is critical to understand whether this deficiency of cytokines in the hippocampus is indicative of a broader immunologic deficit associated with FXS.
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Kosten TR, Graham DP, Nielsen DA. Neurobiology of Opioid Use Disorder and Comorbid Traumatic Brain Injury. JAMA Psychiatry 2018; 75:642-648. [PMID: 29710079 DOI: 10.1001/jamapsychiatry.2018.0101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
IMPORTANCE Treating patients with opioid use disorder (OUD) and traumatic brain injury illustrates 6 neurobiological principles about the actions of 2 contrasting opioid analgesics, morphine and fentanyl, as well as pharmacotherapies for OUD, methadone, naltrexone, and buprenorphine. OBSERVATIONS This literature review focused on a patient with traumatic brain injury who developed OUD from chronic morphine analgesia. His treatment is described in a neurobiological framework of 6 opioid action principles. CONCLUSIONS AND RELEVANCE The 6 principles are (1) coactivation of neuronal and inflammatory immune receptors (Toll-like receptor 4), (2) 1 receptor activating cyclic adenosine monophosphate and β-arrestin second messenger systems, (3) convergence of opioid and adrenergic receptor types on 1 second messenger, (4) antagonist (eg, naltrexone)-induced receptor trafficking, (5) genetic μ-opioid receptor variants influencing analgesia and tolerance, and (6) cross-tolerance vs receptor antagonism as the basis of OUD pharmacotherapy with methadone or buprenorphine vs naltrexone.
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Affiliation(s)
- Thomas R Kosten
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas.,Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
| | - David P Graham
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas.,Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
| | - David A Nielsen
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, Texas.,Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
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Wang LC, Yao HW, Chang CF, Wang SW, Wang SM, Chen SH. Suppression of interleukin-6 increases enterovirus A71 lethality in mice. J Biomed Sci 2017; 24:94. [PMID: 29233145 PMCID: PMC5726025 DOI: 10.1186/s12929-017-0401-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 12/06/2017] [Indexed: 12/27/2022] Open
Abstract
Background Enterovirus A71 (EV-A71) infection can induce fatal encephalitis in young children. Clinical reports show that interleukin-6 (IL-6) levels in the serum and cerebrospinal fluid of infected patients with brainstem encephalitis are significantly elevated. We used a murine model to address the significance of endogenous IL-6 in EV-A71 infection. Results EV-A71 infection transiently increased serum and brain IL-6 protein levels in mice. Most importantly, absence of IL-6 due to gene knockout or depletion of IL-6 using neutralizing monoclonal antibody enhanced the mortality and tissue viral load of infected mice. Absence of IL-6 increased the damage in the central nervous system and decreased the lymphocyte and virus-specific antibody responses of infected mice. Conclusions Endogenous IL-6 functions to clear virus and protect the host from EV-A71 infection. Our study raises caution over the use of anti-IL-6 antibody or pentoxifylline to reduce IL-6 for patient treatment. Electronic supplementary material The online version of this article (10.1186/s12929-017-0401-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Li-Chiu Wang
- Institute of Basic Medical Sciences, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China
| | - Hui-Wen Yao
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China
| | - Chuan-Fa Chang
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China.,Department of Medical Laboratory Science and Biotechnology, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China
| | - Shainn-Wei Wang
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China.,Institute of Molecular Medicine, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China
| | - Shih-Min Wang
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China.,Department of Pediatrics, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China
| | - Shun-Hua Chen
- Center of Infectious Disease and Signaling Research, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China. .,Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, 701, Republic of China.
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Yong H, Chartier G, Quandt J. Modulating inflammation and neuroprotection in multiple sclerosis. J Neurosci Res 2017; 96:927-950. [PMID: 28580582 DOI: 10.1002/jnr.24090] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/17/2017] [Accepted: 05/04/2017] [Indexed: 12/13/2022]
Abstract
Multiple sclerosis (MS) is a neurological disorder of the central nervous system with a presentation and disease course that is largely unpredictable. MS can cause loss of balance, impaired vision or speech, weakness and paralysis, fatigue, depression, and cognitive impairment. Immunomodulation is a major target given the appearance of focal demyelinating lesions in myelin-rich white matter, yet progression and an increasing appreciation for gray matter involvement, even during the earliest phases of the disease, highlights the need to afford neuroprotection and limit neurodegenerative processes that correlate with disability. This review summarizes key aspects of MS pathophysiology and histopathology with a focus on neuroimmune interactions in MS, which may facilitate neurodegeneration through both direct and indirect mechanisms. There is a focus on processes thought to influence disease progression and the role of oxidative stress and mitochondrial dysfunction in MS. The goals and efficacy of current disease-modifying therapies and those in the pipeline are discussed, highlighting recent advances in our understanding of pathways mediating disease progression to identify and translate both immunomodulatory and neuroprotective therapeutics from the bench to the clinic.
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Affiliation(s)
- Heather Yong
- Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Gabrielle Chartier
- Department of Psychiatry, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jacqueline Quandt
- Department of Pathology, University of British Columbia, Vancouver, British Columbia, Canada
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43
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Dec K, Łukomska A, Maciejewska D, Jakubczyk K, Baranowska-Bosiacka I, Chlubek D, Wąsik A, Gutowska I. The Influence of Fluorine on the Disturbances of Homeostasis in the Central Nervous System. Biol Trace Elem Res 2017; 177:224-234. [PMID: 27787813 PMCID: PMC5418325 DOI: 10.1007/s12011-016-0871-4] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 10/11/2016] [Indexed: 01/21/2023]
Abstract
Fluorides occur naturally in the environment, the daily exposure of human organism to fluorine mainly depends on the intake of this element with drinking water and it is connected with the geographical region. In some countries, we can observe the endemic fluorosis-the damage of hard and soft tissues caused by the excessive intake of fluorine. Recent studies showed that fluorine is toxic to the central nervous system (CNS). There are several known mechanisms which lead to structural brain damage caused by the excessive intake of fluorine. This element is able to cross the blood-brain barrier, and it accumulates in neurons affecting cytological changes, cell activity and ion transport (e.g. chlorine transport). Additionally, fluorine changes the concentration of non-enzymatic advanced glycation end products (AGEs), the metabolism of neurotransmitters (influencing mainly glutamatergic neurotransmission) and the energy metabolism of neurons by the impaired glucose transporter-GLUT1. It can also change activity and lead to dysfunction of important proteins which are part of the respiratory chain. Fluorine also affects oxidative stress, glial activation and inflammation in the CNS which leads to neurodegeneration. All of those changes lead to abnormal cell differentiation and the activation of apoptosis through the changes in the expression of neural cell adhesion molecules (NCAM), glial fibrillary acidic protein (GFAP), brain-derived neurotrophic factor (BDNF) and MAP kinases. Excessive exposure to this element can cause harmful effects such as permanent damage of all brain structures, impaired learning ability, memory dysfunction and behavioural problems. This paper provides an overview of the fluoride neurotoxicity in juveniles and adults.
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Affiliation(s)
- K Dec
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University in Szczecin, Broniewskiego street 24, 70-406, Szczecin, Poland
| | - A Łukomska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University in Szczecin, Broniewskiego street 24, 70-406, Szczecin, Poland
| | - D Maciejewska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University in Szczecin, Broniewskiego street 24, 70-406, Szczecin, Poland
| | - K Jakubczyk
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University in Szczecin, Broniewskiego street 24, 70-406, Szczecin, Poland
| | - I Baranowska-Bosiacka
- Department of Biochemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72 av., 71-111, Szczecin, Poland
| | - D Chlubek
- Department of Biochemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72 av., 71-111, Szczecin, Poland
| | - A Wąsik
- Institute of Pharmacology, Polish Academy of Sciences, Department of Neurochemistry, Smętna street 12, 31-343, Kraków, Poland
| | - I Gutowska
- Department of Biochemistry and Human Nutrition, Pomeranian Medical University in Szczecin, Broniewskiego street 24, 70-406, Szczecin, Poland.
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Edlmann E, Giorgi-Coll S, Whitfield PC, Carpenter KLH, Hutchinson PJ. Pathophysiology of chronic subdural haematoma: inflammation, angiogenesis and implications for pharmacotherapy. J Neuroinflammation 2017; 14:108. [PMID: 28558815 PMCID: PMC5450087 DOI: 10.1186/s12974-017-0881-y] [Citation(s) in RCA: 321] [Impact Index Per Article: 45.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/15/2017] [Indexed: 02/08/2023] Open
Abstract
Chronic subdural haematoma (CSDH) is an encapsulated collection of blood and fluid on the surface of the brain. Historically considered a result of head trauma, recent evidence suggests there are more complex processes involved. Trauma may be absent or very minor and does not explain the progressive, chronic course of the condition. This review focuses on several key processes involved in CSDH development: angiogenesis, fibrinolysis and inflammation. The characteristic membrane surrounding the CSDH has been identified as a source of fluid exudation and haemorrhage. Angiogenic stimuli lead to the creation of fragile blood vessels within membrane walls, whilst fibrinolytic processes prevent clot formation resulting in continued haemorrhage. An abundance of inflammatory cells and markers have been identified within the membranes and subdural fluid and are likely to contribute to propagating an inflammatory response which stimulates ongoing membrane growth and fluid accumulation. Currently, the mainstay of treatment for CSDH is surgical drainage, which has associated risks of recurrence requiring repeat surgery. Understanding of the underlying pathophysiological processes has been applied to developing potential drug treatments. Ongoing research is needed to identify if these therapies are successful in controlling the inflammatory and angiogenic disease processes leading to control and resolution of CSDH.
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Affiliation(s)
- Ellie Edlmann
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
| | - Susan Giorgi-Coll
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
| | - Peter C. Whitfield
- Southwest Neurosurgical Centre, Plymouth Hospitals NHS Trust, Plymouth, PL6 8DH UK
| | - Keri L. H. Carpenter
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
| | - Peter J. Hutchinson
- Division of Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Box 167, Cambridge Biomedical Campus, Cambridge, CB2 0QQ UK
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Woo SJ, Jo HI, Lee HH, Chung JK. Molecular characterization and expression analysis of olive flounder (Paralichthys olivaceus) phospholipase C gamma 1 and gamma 2. FISH & SHELLFISH IMMUNOLOGY 2017; 63:353-366. [PMID: 27894895 DOI: 10.1016/j.fsi.2016.11.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 11/22/2016] [Accepted: 11/23/2016] [Indexed: 06/06/2023]
Abstract
Phospholipase C gamma 1 and gamma 2 (PLCG1 and PLCG2) are influential in modulating Ca2+ and diacylglycerol, second messengers involved in tyrosine kinase-dependent signaling, including growth factor activation. Here, we used RACE (rapid amplification of cDNA ends) to clone cDNA encoding PLCG1 (PoPLCG1) and PLCG2 (PoPLCG2) in the olive flounder (Paralichthys olivaceus). The respective 1313 and 1249 amino acid sequences share high identity with human PLCG1 and PLCG2, and contain the following domains: pleckstrin homology (PH), EF-hand, catalytic X and Y, Src homology 2 (SH2), Src homology 3 (SH3), and C2. Phylogenic analysis and sequence comparison of PoPLCG1 and PoPLCG2 with other PLC isozymes showed a close relationship between the two PLCGs, supported by structural analysis. In addition, tissue expression analysis showed that PoPLCG1 was expressed predominantly in the brain, eye, and heart, whereas PoPLCG2 was expressed principally in gills, esophagus, spleen, and kidney. Following stimulation with LPS and Poly I:C, PoPLCG expression was compared with the expression of inflammatory cytokines IL-1β, IL-6, and TNF-α via reverse transcription-PCR and real-time quantitative PCR. Our results suggest that PoPLCG isozymes perform a critical immune function in olive flounder, being active in pathogen resistance and the inflammation process.
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Affiliation(s)
- Soo Ji Woo
- Department of Aquatic Life Medicine, Pukyong National University, Busan 608-737, South Korea.
| | - Hyae In Jo
- Gyeongbuk Native Fish Business Center, Uiseong 37366, South Korea.
| | - Hyung Ho Lee
- Department of Biotechnology, Pukyong National University, Busan 608-737, South Korea.
| | - Joon Ki Chung
- Department of Aquatic Life Medicine, Pukyong National University, Busan 608-737, South Korea.
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46
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Coplan JD, Gopinath S, Abdallah CG, Margolis J, Chen W, Scharf BA, Rosenblum LA, Batuman OA, Smith ELP. Effects of Acute Confinement Stress-induced Hypothalamic-Pituitary Adrenal Axis Activation and Concomitant Peripheral and Central Transforming Growth Factor-β1 Measures in Nonhuman Primates. ACTA ACUST UNITED AC 2017; 1. [PMID: 28393139 PMCID: PMC5381663 DOI: 10.1177/2470547016688693] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Transforming growth factor-β1 (TGF-β1) is a multifunctional cytokine with anti-inflammatory, immunosuppressive, and neuroprotective properties. The hypothalamic-pituitary-adrenal axis and immune system exert bidirectional influences on each other, via cortisol and TGF-β1, but the exact nature of the interaction is not well characterized. The current study examined the effects, in bonnet macaques (Macaca radiata), of two consecutive acute confinement stress periods in an unfamiliar room while mildly restrained, first without and then with dexamethasone pretreatment (0.01 mg/kg intramuscular). Preceding the confinement studies, a non-stress control condition obtained contemporaneous levels of cortisol and TGF-β1 in both plasma and cerebrospinal fluid to match the confinement stress studies. Subjects were reared under either normative or variable foraging demand conditions. Since there were no rearing effects at baseline or for any of the conditions tested—either for cortisol or TGF-β—the study analyses were conducted on the combined rearing groups. The stress condition increased both plasma and cerebrospinal fluid cortisol levels whereas dexamethasone pretreatment decreased cortisol concentrations to below baseline levels despite stress. The stress condition decreased TGF-β1 concentrations only in cerebrospinal fluid but not in serum. Together, the data suggested that stress-induced reductions of a centrally active neuroprotective cytokine occur in the face of hypothalamic-pituitary-adrenal axis activation, potentially facilitating glucocortoid-induced neurotoxicity. Stress-induced reductions of neuroprotective cytokines prompt exploration of protective measures against glucocorticoid-induced neurotoxicity.
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Affiliation(s)
- Jeremy D Coplan
- Department of Psychiatry & Behavioral Science, Division of Neuropsychopharmacology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Srinath Gopinath
- Department of Psychiatry & Behavioral Science, Division of Neuropsychopharmacology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Clinical Neurosciences Division, National Center for PTSD, West Haven, CT, USA
| | - Chadi G Abdallah
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA; Clinical Neurosciences Division, National Center for PTSD, West Haven, CT, USA
| | - Jeffrey Margolis
- Department of Psychiatry & Behavioral Science, Division of Neuropsychopharmacology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Wei Chen
- Department of Psychiatry & Behavioral Science, Division of Neuropsychopharmacology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Bruce A Scharf
- Department of Psychiatry & Behavioral Science, Division of Neuropsychopharmacology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Leonard A Rosenblum
- Department of Psychiatry & Behavioral Science, Division of Neuropsychopharmacology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Olcay A Batuman
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, NY, USA
| | - Eric L P Smith
- Division of hematology, SUNY Downstate Medical Center, Broioklyn, NY, USA
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Namas R, Ghuma A, Hermus L, Zamora R, Okonkwo D, Billiar T, Vodovotz Y. The Acute Inflammatory Response in Trauma /Hemorrhage and Traumatic Brain Injury: Current State and Emerging Prospects. Libyan J Med 2016. [DOI: 10.3402/ljm.v4i3.4824] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
| | | | - L. Hermus
- Martini Hospital, Department of Surgery, Groningen, Netherlands
| | | | | | | | - Y. Vodovotz
- Department of Surgery
- Center for Inflammation and Regenerative Modeling, McGowan Institute for Regenerative Medicine University of Pittsburgh, Pittsburgh, PA
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Kim JY, Park J, Chang JY, Kim SH, Lee JE. Inflammation after Ischemic Stroke: The Role of Leukocytes and Glial Cells. Exp Neurobiol 2016; 25:241-251. [PMID: 27790058 PMCID: PMC5081470 DOI: 10.5607/en.2016.25.5.241] [Citation(s) in RCA: 207] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 10/12/2016] [Accepted: 10/17/2016] [Indexed: 12/17/2022] Open
Abstract
The immune response after stroke is known to play a major role in ischemic brain pathobiology. The inflammatory signals released by immune mediators activated by brain injury sets off a complex series of biochemical and molecular events which have been increasingly recognized as a key contributor to neuronal cell death. The primary immune mediators involved are glial cells and infiltrating leukocytes, including neutrophils, monocytes and lymphocyte. After ischemic stroke, activation of glial cells and subsequent release of pro- and anti-inflammatory signals are important for modulating both neuronal cell damage and wound healing. Infiltrated leukocytes release inflammatory mediators into the site of the lesion, thereby exacerbating brain injury. This review describes how the roles of glial cells and circulating leukocytes are a double-edged sword for neuroinflammation by focusing on their detrimental and protective effects in ischemic stroke. Here, we will focus on underlying characterize of glial cells and leukocytes under inflammation after ischemic stroke.
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Affiliation(s)
- Jong Youl Kim
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Joohyun Park
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Korea.; Bk21 Plus Project for Medical Sciences and Brain Research Institute, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Ji Young Chang
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Sa-Hyun Kim
- Department of Clinical Laboratory Science, Semyung University, Jaecheon 27136, Korea
| | - Jong Eun Lee
- Department of Anatomy, Yonsei University College of Medicine, Seoul 03722, Korea.; Bk21 Plus Project for Medical Sciences and Brain Research Institute, Yonsei University College of Medicine, Seoul 03722, Korea
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Meyer U, Yee BK, Feldon J. The Neurodevelopmental Impact of Prenatal Infections at Different Times of Pregnancy: The Earlier the Worse? Neuroscientist 2016; 13:241-56. [PMID: 17519367 DOI: 10.1177/1073858406296401] [Citation(s) in RCA: 197] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Environmental insults taking place in early brain development may have long-lasting consequences for adult brain functioning. There is a large body of epidemiological data linking maternal infections during pregnancy to a higher incidence of psychiatric disorders with a presumed neurodevelopmental origin in the offspring, including schizophrenia and autism. Although specific gestational windows may be associated with a differing vulnerability to infection-mediated disturbances in normal brain development, it still remains debatable whether and/or why certain gestation periods may confer maximal risk for neurodevelopmental disturbances following the prenatal exposure to infectious events. In this review, the authors integrate both epidemiological and experimental findings supporting the hypothesis that infection-associated immunological events in early fetal life may have a stronger neurodevelopmental impact compared to late pregnancy infections. This is because infections in early gestation may not only interfere with fundamental neurodevelopmental events such as cell proliferation and differentiation, but it may also predispose the developing nervous system to additional failures in subsequent cell migration, target selection, and synapse maturation, eventually leading to multiple brain and behavioral abnormalities in the adult offspring. The temporal dependency of the epidemiological link between maternal infections during pregnancy and a higher risk for brain disorders in the offspring may thus be explained by specific spatiotemporal events in the course of fetal brain development. NEUROSCIENTIST 13(3):241—256, 2007.
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Affiliation(s)
- Urs Meyer
- Laboratory of Behavioral Neurobiology, ETH Zurich, Switzerland
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