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Shuvalova M, Dmitrieva A, Belousov V, Nosov G. The role of reactive oxygen species in the regulation of the blood-brain barrier. Tissue Barriers 2024:2361202. [PMID: 38808582 DOI: 10.1080/21688370.2024.2361202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 05/23/2024] [Indexed: 05/30/2024] Open
Abstract
The blood-brain barrier (BBB) regulates the exchange of metabolites and cells between the blood and brain, and maintains central nervous system homeostasis. Various factors affect BBB barrier functions, including reactive oxygen species (ROS). ROS can act as stressors, damaging biological molecules, but they also serve as secondary messengers in intracellular signaling cascades during redox signaling. The impact of ROS on the BBB has been observed in multiple sclerosis, stroke, trauma, and other neurological disorders, making blocking ROS generation a promising therapeutic strategy for BBB dysfunction. However, it is important to consider ROS generation during normal BBB functioning for signaling purposes. This review summarizes data on proteins expressed by BBB cells that can be targets of redox signaling or oxidative stress. It also provides examples of signaling molecules whose impact may cause ROS generation in the BBB, as well as discusses the most common diseases associated with BBB dysfunction and excessive ROS generation, open questions that arise in the study of this problem, and possible ways to overcome them.
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Affiliation(s)
- Margarita Shuvalova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia
- Department of metabolism and redox biology, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
| | - Anastasiia Dmitrieva
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Vsevolod Belousov
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia
- Department of metabolism and redox biology, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical Biological Agency, Moscow, Russia
- Life Improvement by Future Technologies (LIFT) Center, Skolkovo, Moscow, Russia
| | - Georgii Nosov
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Moscow, Russia
- Federal Center of Brain Research and Neurotechnologies, Federal Medical Biological Agency, Moscow, Russia
- Life Improvement by Future Technologies (LIFT) Center, Skolkovo, Moscow, Russia
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Han Y, Han Z, Huang X, Li S, Jin G, Feng J, Wu D, Liu H. An injectable refrigerated hydrogel for inducing local hypothermia and neuroprotection against traumatic brain injury in mice. J Nanobiotechnology 2024; 22:251. [PMID: 38750597 PMCID: PMC11095020 DOI: 10.1186/s12951-024-02454-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/01/2024] [Indexed: 05/19/2024] Open
Abstract
BACKGROUND Hypothermia is a promising therapy for traumatic brain injury (TBI) in the clinic. However, the neuroprotective outcomes of hypothermia-treated TBI patients in clinical studies are inconsistent due to several severe side effects. Here, an injectable refrigerated hydrogel was designed to deliver 3-iodothyronamine (T1AM) to achieve a longer period of local hypothermia for TBI treatment. Hydrogel has four advantages: (1) It can be injected into injured sites after TBI, where it forms a hydrogel and avoids the side effects of whole-body cooling. (2) Hydrogels can biodegrade and be used for controlled drug release. (3) Released T1AM can induce hypothermia. (4) This hydrogel has increased medical value given its simple operation and ability to achieve timely treatment. METHODS Pol/T hydrogels were prepared by a low-temperature mixing method and characterized. The effect of the Pol/T hydrogel on traumatic brain injury in mice was studied. The degradation of the hydrogel at the body level was observed with a small animal imager. Brain temperature and body temperature were measured by brain thermometer and body thermometer, respectively. The apoptosis of peripheral nerve cells was detected by immunohistochemical staining. The protective effect of the hydrogels on the blood-brain barrier (BBB) after TBI was evaluated by the Evans blue penetration test. The protective effect of hydrogel on brain edema after injury in mice was detected by Magnetic resonance (MR) in small animals. The enzyme linked immunosorbent assay (ELISA) method was used to measure the levels of inflammatory factors. The effects of behavioral tests on the learning ability and exercise ability of mice after injury were evaluated. RESULTS This hydrogel was able to cool the brain to hypothermia for 12 h while maintaining body temperature within the normal range after TBI in mice. More importantly, hypothermia induced by this hydrogel leads to the maintenance of BBB integrity, the prevention of cell death, the reduction of the inflammatory response and brain edema, and the promotion of functional recovery after TBI in mice. This cooling method could be developed as a new approach for hypothermia treatment in TBI patients. CONCLUSION Our study showed that injectable and biodegradable frozen Pol/T hydrogels to induce local hypothermia in TBI mice can be used for the treatment of traumatic brain injury.
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Affiliation(s)
- Yuhan Han
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Head Trauma, Shanghai, 200127, China
| | - Zhengzhong Han
- Department of Neurosurgery, Xuzhou Children's Hospital, Xuzhou, 221000, Jiangsu, China
| | - Xuyang Huang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou, 221000, Jiangsu, China
- Department of Intensive Care Medicine, The Second Hospital of Jiaxing, Jiaxing, 314000, Zhejiang, China
| | - Shanshan Li
- Department of Forensic Medicine, Xuzhou Medical University, Xuzhou, 221000, Jiangsu, China
| | - Guoliang Jin
- Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221000, Jiangsu, China
| | - Junfeng Feng
- Brain Injury Center, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Head Trauma, Shanghai, 200127, China.
| | - Decheng Wu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
| | - Hongmei Liu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
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Wang P, Yang S, Zheng J, Lu J, Li N, Zhang J. Development and internal validation of a nomogram to predict temporary acute agitated delirium after surgery for chronic subdural hematoma in elderly patients: an analysis of the clinical database. Front Neurol 2024; 15:1394476. [PMID: 38779218 PMCID: PMC11110404 DOI: 10.3389/fneur.2024.1394476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 04/16/2024] [Indexed: 05/25/2024] Open
Abstract
Background This study aimed to develop a nomogram for predicting temporary acute agitated delirium after surgery in patients with chronic subdural hematoma (CSH) without neurological compromise and hospitalized in the neurosurgery. Methods We included 289 patients with chronic subdural hematoma (CSH) from the medical information system of Yuebei People's Hospital of Shaoguan City, Guangdong Province, and collected 16 clinical indicators within 24 h of admission. We used the least absolute shrinkage and selection operator (LASSO) regression to identify risk factors. We established a multivariate logistic regression model and constructed a nomogram. We performed internal validation by 1,000 bootstrap samples; we plotted a receiver operating curve (ROC) and calculated the area under the curve (AUC), sensitivity, and specificity. We also evaluated the calibration of our model by the calibration curve and the Hosmer-Lemeshow goodness-of-fit test (HL test). We performed a decision curve analysis (DCA) and a clinical impact curve (CIC) to assess the net clinical benefit of our model. Results The nomogram included alcoholism history, hepatic insufficiency, verbal rating scale for postoperative pain (VRS), pre-hospital modified Rankin Scale (mRS), and preoperative hematoma thickness as predictors. Our model showed satisfactory diagnostic performance with an AUC value of 0.8474 in the validation set. The calibration curve and the HL test showed good agreement between predicted and observed outcomes (p = 0.9288). The DCA and CIC showed that our model had a high predictive ability for the occurrence of postoperative delirium in patients with CSDH. Conclusion We identified alcoholism, liver dysfunction, pre-hospital mRS, preoperative hematoma thickness, and postoperative VRS pain as predictors of postoperative delirium in chronic subdural hematoma patients. We developed and validated a multivariate logistic regression model and a nomogram.
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Affiliation(s)
- Peng Wang
- Department of Neurosurgery, Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Shasha Yang
- Department of Pathology, Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Jianqiao Zheng
- Department of Neurosurgery, Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Jinjiang Lu
- Department of Neurosurgery, Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
| | - Nan Li
- Doctor of Medicine, Department of Emergency Medicine, General Hospital of Northern Theater Command, Shenyang, China
| | - Jing Zhang
- Intensive Care Unit, Yuebei People’s Hospital of Shantou University Medical College, Shaoguan, China
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Ortega JA, Soares de Aguiar GP, Chandravanshi P, Levy N, Engel E, Álvarez Z. Exploring the properties and potential of the neural extracellular matrix for next-generation regenerative therapies. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2024; 16:e1962. [PMID: 38723788 DOI: 10.1002/wnan.1962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 04/05/2024] [Accepted: 04/09/2024] [Indexed: 05/24/2024]
Abstract
The extracellular matrix (ECM) is a dynamic and complex network of proteins and molecules that surrounds cells and tissues in the nervous system and orchestrates a myriad of biological functions. This review carefully examines the diverse interactions between cells and the ECM, as well as the transformative chemical and physical changes that the ECM undergoes during neural development, aging, and disease. These transformations play a pivotal role in shaping tissue morphogenesis and neural activity, thereby influencing the functionality of the central nervous system (CNS). In our comprehensive review, we describe the diverse behaviors of the CNS ECM in different physiological and pathological scenarios and explore the unique properties that make ECM-based strategies attractive for CNS repair and regeneration. Addressing the challenges of scalability, variability, and integration with host tissues, we review how advanced natural, synthetic, and combinatorial matrix approaches enhance biocompatibility, mechanical properties, and functional recovery. Overall, this review highlights the potential of decellularized ECM as a powerful tool for CNS modeling and regenerative purposes and sets the stage for future research in this exciting field. This article is categorized under: Implantable Materials and Surgical Technologies > Nanotechnology in Tissue Repair and Replacement Therapeutic Approaches and Drug Discovery > Nanomedicine for Neurological Disease Implantable Materials and Surgical Technologies > Nanomaterials and Implants.
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Affiliation(s)
- J Alberto Ortega
- Department of Pathology and Experimental Therapeutics, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
- Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet del Llobregat, Spain
| | - Gisele P Soares de Aguiar
- Department of Pathology and Experimental Therapeutics, Institute of Neurosciences, University of Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain
- Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet del Llobregat, Spain
| | - Palash Chandravanshi
- Biomaterials for Neural Regeneration Group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Natacha Levy
- Biomaterials for Neural Regeneration Group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
| | - Elisabeth Engel
- IMEM-BRT Group, Department of Materials Science and Engineering, EEBE, Technical University of Catalonia (UPC), Barcelona, Spain
- Biomaterials for Regenerative Therapies Group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
- CIBER en Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain
| | - Zaida Álvarez
- Biomaterials for Neural Regeneration Group, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Barcelona, Spain
- CIBER en Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Madrid, Spain
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois, USA
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Özen I, Clausen F, Flygt J, Marklund N, Paul G. Neutralization of Interleukin 1-beta is associated with preservation of thalamic capillaries after experimental traumatic brain injury. Front Neurol 2024; 15:1378203. [PMID: 38765267 PMCID: PMC11100426 DOI: 10.3389/fneur.2024.1378203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 04/11/2024] [Indexed: 05/21/2024] Open
Abstract
Introduction Traumatic brain injury to thalamo-cortical pathways is associated with posttraumatic morbidity. Diffuse mechanical forces to white matter tracts and deep grey matter regions induce an inflammatory response and vascular damage resulting in progressive neurodegeneration. Pro-inflammatory cytokines, including interleukin-1β (IL-1β), may contribute to the link between inflammation and the injured capillary network after TBI. This study investigates whether IL-1β is a key contributor to capillary alterations and changes in pericyte coverage in the thalamus and cortex after TBI. Methods Animals were subjected to central fluid percussion injury (cFPI), a model of TBI causing widespread axonal and vascular pathology, or sham injury and randomized to receive a neutralizing anti-IL-1β or a control, anti-cyclosporin A antibody, at 30 min post-injury. Capillary length and pericyte coverage of cortex and thalamus were analyzed by immunohistochemistry at 2- and 7-days post-injury. Results and Conclusion Our results show that early post-injury attenuation of IL-1β dependent inflammatory signaling prevents capillary damage by increasing pericyte coverage in the thalamus.
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Affiliation(s)
- Ilknur Özen
- Lund Brain Injury Laboratory for Neurosurgical Research, Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Fredrik Clausen
- Department of Clinical Sciences Lund, Neurosurgery, Lund University, Skåne University Hospital, Lund, Sweden
| | - Johanna Flygt
- Department of Clinical Sciences Lund, Neurosurgery, Lund University, Skåne University Hospital, Lund, Sweden
| | - Niklas Marklund
- Lund Brain Injury Laboratory for Neurosurgical Research, Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Clinical Sciences Lund, Neurosurgery, Lund University, Skåne University Hospital, Lund, Sweden
| | - Gesine Paul
- Translational Neurology Group, Department of Clinical Science, Wallenberg Neuroscience Center and Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
- Department of Neurology, Scania University Hospital, Lund, Sweden
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Eisenbaum M, Pearson A, Ortiz C, Koprivica M, Cembran A, Mullan M, Crawford F, Ojo J, Bachmeier C. Repetitive head trauma and apoE4 induce chronic cerebrovascular alterations that impair tau elimination from the brain. Exp Neurol 2024; 374:114702. [PMID: 38301863 PMCID: PMC10922621 DOI: 10.1016/j.expneurol.2024.114702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
Repetitive mild traumatic brain injuries (r-mTBI) sustained in the military or contact sports have been associated with the accumulation of extracellular tau in the brain, which may contribute to the pathogenesis of neurodegenerative tauopathies. The expression of the apolipoprotein E4 (apoE4) isoform has been associated with higher levels of tau in the brain, and worse clinical outcomes after r-mTBI, though the influence of apoE genotype on extracellular tau dynamics in the brain is poorly understood. We recently demonstrated that extracellular tau can be eliminated across blood-brain barrier (BBB), which is progressively impaired following r-mTBI. The current studies investigated the influence of repetitive mild TBI (r-mTBI) and apoE genotype on the elimination of extracellular solutes from the brain. Following intracortical injection of biotin-labeled tau into humanized apoE-Tr mice, the levels of exogenous tau residing in the brain of apoE4 mice were elevated compared to other isoforms, indicating reduced tau elimination. Additionally, we found exposure to r-mTBI increased tau residence in apoE2 mice, similar to our observations in E2FAD animals. Each of these findings may be the result of diminished tau efflux via LRP1 at the BBB, as LRP1 inhibition significantly reduced tau uptake in endothelial cells and decreased tau transit across an in vitro model of the BBB (basolateral-to-apical). Notably, we showed that injury and apoE status, (particularly apoE4) resulted in chronic alterations in BBB integrity, pericyte coverage, and AQP4 polarization. These aberrations coincided with an atypical reactive astrocytic gene signature indicative of diminished CSF-ISF exchange. Our work found that CSF movement was reduced in the chronic phase following r-mTBI (>18 months post injury) across all apoE genotypes. In summary, we show that apoE genotype strongly influences cerebrovascular homeostasis, which can lead to age-dependent deficiencies in the elimination of toxic proteins from the brain, like tau, particularly in the aftermath of head trauma.
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Affiliation(s)
| | | | | | | | | | | | - Fiona Crawford
- The Roskamp Institute, Sarasota, FL, USA; James A. Haley Veterans' Hospital, Tampa, FL, USA
| | - Joseph Ojo
- The Roskamp Institute, Sarasota, FL, USA
| | - Corbin Bachmeier
- The Roskamp Institute, Sarasota, FL, USA; Bay Pines VA Healthcare System, Bay Pines, FL, USA
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Yuan Y, He Q, Yang X, Flores JJ, Huang L, Luo X, Zhang X, Zhang Z, Li R, Gu L, Dong S, Zhu S, Yi K, Han M, Wu L, Zhou Y, Zhang JH, Xie Z, Tang J. Mitochondrial ferritin upregulation reduced oxidative stress and blood-brain-barrier disruption by maintaining cellular iron homeostasis in a neonatal rat model of germinal matrix hemorrhage. Exp Neurol 2024; 374:114703. [PMID: 38281588 DOI: 10.1016/j.expneurol.2024.114703] [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: 04/19/2023] [Revised: 09/07/2023] [Accepted: 01/25/2024] [Indexed: 01/30/2024]
Abstract
Germinal matrix hemorrhage (GMH) is a devasting neurological disease in premature newborns. After GMH, brain iron overload associated with hemoglobin degradation contributed to oxidative stress, causing disruption of the already vulnerable blood-brain barrier (BBB). Mitochondrial ferritin (FTMT), a novel mitochondrial outer membrane protein, is crucial in maintaining cellular iron homeostasis. We aimed to investigate the effect of FTMT upregulation on oxidative stress and BBB disruption associated with brain iron overload in rats. A total of 222 Sprague-Dawley neonatal rat pups (7 days old) were used to establish a collagenase-induced GMH model and an iron-overload model of intracerebral FeCl2 injection. Deferiprone was administered via gastric lavage 1 h after GMH and given daily until euthanasia. FTMT CRISPR Knockout and adenovirus (Ad)-FTMT were administered intracerebroventricularly 48 h before GMH and FeCl2 injection, respectively. Neurobehavioral tests, immunofluorescence, Western blot, Malondialdehyde measurement, and brain water content were performed to evaluate neurobehavior deficits, oxidative stress, and BBB disruption, respectively. The results demonstrated that brain expressions of iron exporter Ferroportin (FPN) and antioxidant glutathione peroxidase 4 (GPX4) as well as BBB tight junction proteins including Claudin-5 and Zona Occulta (ZO)-1 were found to be decreased at 72 h after GMH. FTMT agonist Deferiprone attenuated oxidative stress and preserved BBB tight junction proteins after GMH. These effects were partially reversed by FTMT CRISPR Knockout. Iron overload by FeCl2 injection resulted in oxidative stress and BBB disruption, which were improved by Ad-FTMT mediated FTMT overexpression. Collectively, FTMT upregulation is neuroprotective against brain injury associated with iron overload. Deferiprone reduced oxidative stress and BBB disruption by maintaining cellular iron homeostasis partially by the upregulating of FTMT after GMH. Deferiprone may be an effective treatment for patients with GMH.
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Affiliation(s)
- Ye Yuan
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China; Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Qiuguang He
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China; Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Xiao Yang
- Department of Obstetrics and Gynecology, University-Town Hospital of Chongqing Medical University, Chongqing 401331, China
| | - Jerry J Flores
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Lei Huang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Xu Luo
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China
| | - Xingyu Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China
| | - Zongyi Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China
| | - Ruihao Li
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China
| | - Lingui Gu
- Department of Neurosurgery, Center for Malignant Brain Tumors, National Glioma MDT Alliance, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Siyuan Dong
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Shiyi Zhu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Kun Yi
- Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Mingyang Han
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Lei Wu
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - You Zhou
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China; Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Departments of Anesthesiology and Neurology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA; Department of Neurosurgery, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA
| | - Zongyi Xie
- Department of Neurosurgery, The Second Affiliated Hospital, Chongqing Medical University, 76 Linjiang Road, Chongqing 400010, China.
| | - Jiping Tang
- Department of Physiology and Pharmacology, Loma Linda University School of Medicine, Loma Linda, CA 92354, USA.
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Zhang C, Shi J, Dai Y, Li X, Leng J. Progress of the study of pericytes and their potential research value in adenomyosis. Sci Prog 2024; 107:368504241257126. [PMID: 38863331 DOI: 10.1177/00368504241257126] [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] [Indexed: 06/13/2024]
Abstract
Pericytes (PCs) are versatile cells integral to the microcirculation wall, exhibiting specific stem cell traits. They are essential in modulating blood flow, ensuring vascular permeability, maintaining homeostasis, and aiding tissue repair process. Given their involvement in numerous disease-related pathological and physiological processes, the regulation of PCs has emerged as a focal point of research. Adenomyosis is characterized by the presence of active endometrial glands and stroma encased by an enlarged and proliferative myometrial layer, further accompanied by fibrosis and new blood vessel formation. This distinct pathological condition might be intricately linked with PCs. This article comprehensively reviews the markers associated with PCs, their contributions to angiogenesis, blood flow modulation, and fibrotic processes. Moreover, it provides a comprehensive overview of the current research on adenomyosis pathophysiology, emphasizing the potential correlation and future implications regarding PCs and the development of adenomyosis.
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Affiliation(s)
- Chenyu Zhang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing, China
| | - Jinghua Shi
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing, China
| | - Yi Dai
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing, China
| | - Xiaoyan Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing, China
| | - Jinhua Leng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- National Clinical Research Center for Obstetric & Gynecologic Diseases, Beijing, China
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Joseph CR. Progressive Age-Associated Blood-Brain Barrier Leak/Dysfunction-Nexus of Neurodegenerative Disease Using MRI Markers to Identify Preclinical Disease and Potential New Targets for Future Treatments. Diagnostics (Basel) 2024; 14:726. [PMID: 38611639 PMCID: PMC11011559 DOI: 10.3390/diagnostics14070726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 03/19/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
This review article focuses on the upstream pertinent pathophysiology leading to neurodegenerative disease. Specifically, the nexus appears to be blood-brain barrier (BBB) leakiness resulting in a two-prong inflammatory disease spectrum damaging the microvasculature and corrupting protein synthesis and degradation with accumulating misfolded toxic proteins. The suboptimal results of removing misfolded proteins mean a new approach to disease in the preclinical state is required aimed at other targets. Validated noninvasive imaging and serologic biomarkers of early preclinical disease implemented in the high-risk patient cohort along with periodic surveillance once effective treatments are developed will be required. This review discusses the physiology and pathophysiology of the BBB, new MRI imaging techniques identifying the leak, and altered fluid dynamic effects in the preclinical state. The risk factors for disease development, preventative measures, and potential treatment targets are also discussed.
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Affiliation(s)
- Charles R Joseph
- Neurology and Internal Medicine, College of Osteopathic Medicine, Liberty University, Lynchburg, VA 24502, USA
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10
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Saikia BB, Bhowmick S, Malat A, Preetha Rani MR, Thaha A, Abdul-Muneer PM. ICAM-1 Deletion Using CRISPR/Cas9 Protects the Brain from Traumatic Brain Injury-Induced Inflammatory Leukocyte Adhesion and Transmigration Cascades by Attenuating the Paxillin/FAK-Dependent Rho GTPase Pathway. J Neurosci 2024; 44:e1742232024. [PMID: 38326036 PMCID: PMC10941244 DOI: 10.1523/jneurosci.1742-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 01/09/2024] [Accepted: 01/27/2024] [Indexed: 02/09/2024] Open
Abstract
Intercellular adhesion molecule-1 (ICAM-1) is identified as an initiator of neuroinflammatory responses that lead to neurodegeneration and cognitive and sensory-motor deficits in several pathophysiological conditions including traumatic brain injury (TBI). However, the underlying mechanisms of ICAM-1-mediated leukocyte adhesion and transmigration and its link with neuroinflammation and functional deficits following TBI remain elusive. Here, we hypothesize that blocking of ICAM-1 attenuates the transmigration of leukocytes to the brain and promotes functional recovery after TBI. The experimental TBI was induced in vivo by fluid percussion injury (25 psi) in male and female wild-type and ICAM-1-/- mice and in vitro by stretch injury (3 psi) in human brain microvascular endothelial cells (hBMVECs). We treated hBMVECs and animals with ICAM-1 CRISPR/Cas9 and conducted several biochemical analyses and demonstrated that CRISPR/Cas9-mediated ICAM-1 deletion mitigates blood-brain barrier (BBB) damage and leukocyte transmigration to the brain by attenuating the paxillin/focal adhesion kinase (FAK)-dependent Rho GTPase pathway. For analyzing functional outcomes, we used a cohort of behavioral tests that included sensorimotor functions, psychological stress analyses, and spatial memory and learning following TBI. In conclusion, this study could establish the significance of deletion or blocking of ICAM-1 in transforming into a novel preventive approach against the pathophysiology of TBI.
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Affiliation(s)
- Bibhuti Ballav Saikia
- Laboratory of CNS injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, Edison, New Jersey 08820
| | - Saurav Bhowmick
- Laboratory of CNS injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, Edison, New Jersey 08820
| | - Anitha Malat
- Laboratory of CNS injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, Edison, New Jersey 08820
| | - M R Preetha Rani
- Laboratory of CNS injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, Edison, New Jersey 08820
| | - Almas Thaha
- Laboratory of CNS injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, Edison, New Jersey 08820
| | - P M Abdul-Muneer
- Laboratory of CNS injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, Edison, New Jersey 08820
- Department of Neurology, Hackensack Meridian School of Medicine, Nutley, New Jersey 07110
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11
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Ma Y, Sun W, Bai J, Gao F, Ma H, Liu H, Hu J, Xu C, Zhang X, Liu Z, Yuan T, Sun C, Huang Y, Wang R. Targeting blood brain barrier-Remote ischemic conditioning alleviates cognitive impairment in female APP/PS1 rats. CNS Neurosci Ther 2024; 30:e14613. [PMID: 38379185 PMCID: PMC10879645 DOI: 10.1111/cns.14613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 11/16/2023] [Accepted: 11/26/2023] [Indexed: 02/22/2024] Open
Abstract
AIMS Alzheimer's disease (AD) is a significant global health concern, and it is crucial that we find effective methods to prevent or slow down AD progression. Recent studies have highlighted the essential role of blood vessels in clearing Aβ, a protein that contributes to AD. Scientists are exploring blood biomarkers as a potential tool for future AD diagnosis. One promising method that may help prevent AD is remote ischemic conditioning (RIC). RIC involves using sub-lethal ischemic-reperfusion cycles on limbs. However, a comprehensive understanding of how RIC can prevent AD and its long-term effectiveness is still lacking. Further research is essential to fully comprehend the potential benefits of RIC in preventing AD. METHODS Female wild-type (WT) and APP/PS1 transgenic rats, aged 12 months, underwent ovariectomy and were subsequently assigned to WT, APP/PS1, and APP/PS1 + RIC groups. RIC was conducted five times a week for 4 weeks. The rats' depressive and cognitive behaviors were evaluated using force swimming, open-field tests, novel objective recognition, elevated plus maze, and Barnes maze tests. Evaluation of the neurovascular unit (NVU), synapses, vasculature, astrocytes, and microglia was conducted using immunofluorescence staining (IF), Western blot (WB), and transmission electron microscopy (TEM). Additionally, the cerebro-vasculature was examined using micro-CT, and cerebral blood flow (CBF) was measured using Speckle Doppler. Blood-brain barrier (BBB) permeability was determined by measuring the Evans blue leakage. Finally, Aβ levels in the rat frontal cortex were measured using WB, ELISA, or IF staining. RESULTS RIC enhanced memory-related protein expression and rescued depressive-like behavior and cognitive decline in APP/PS1 transgenic rats. Additionally, the intervention protected NVU in the rat frontal cortex, as evidenced by (1) increased expression of TJ (tight junction) proteins, pericyte marker PDGFRβ, and glucose transporter 1 (GLUT1), as well as decreased VCAM1; (2) mitigation of ultrastructure impairment in neuron, cerebral vascular, and astrocyte; (3) upregulation of A2 astrocyte phenotype markers and downregulation of A1 phenotype markers, indicating a shift toward a healthier phenotype. Correspondingly, RIC intervention alleviated neuroinflammation, as evidenced by the decreased Iba1 level, a microglia marker. Meanwhile, RIC intervention elevated CBF in frontal cortex of the rats. Notably, RIC intervention effectively suppressed Aβ toxicity, as demonstrated by the enhancement of α-secretase and attenuation of β-secretase (BACE1) and γ- secretase and Aβ1-42 and Aβ1-40 levels as well. CONCLUSION Chronic RIC intervention exerts vascular and neuroprotective roles, suggesting that RIC could be a promising therapeutic strategy targeting the BBB and NVU during AD development.
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Affiliation(s)
- Yuxuan Ma
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Wuxiang Sun
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
| | - Jing Bai
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
| | - Fujia Gao
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Haoran Ma
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Huiyu Liu
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Jiewei Hu
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
| | - Chao Xu
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Xin Zhang
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Zixuan Liu
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
| | - Tao Yuan
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
| | - Chenxu Sun
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
| | - Yuanyuan Huang
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
| | - Ruimin Wang
- International Science & Technology Cooperation Base of GeriatricSchool of Public Health of North China University of Science and TechnologyTangshanHebeiChina
- School of Basic Medical ScienceNorth China University of Science and TechnologyTangshanHebeiChina
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12
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Agoston DV. Traumatic Brain Injury in the Long-COVID Era. Neurotrauma Rep 2024; 5:81-94. [PMID: 38463416 PMCID: PMC10923549 DOI: 10.1089/neur.2023.0067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024] Open
Abstract
Major determinants of the biological background or reserve, such as age, biological sex, comorbidities (diabetes, hypertension, obesity, etc.), and medications (e.g., anticoagulants), are known to affect outcome after traumatic brain injury (TBI). With the unparalleled data richness of coronavirus disease 2019 (COVID-19; ∼375,000 and counting!) as well as the chronic form, long-COVID, also called post-acute sequelae SARS-CoV-2 infection (PASC), publications (∼30,000 and counting) covering virtually every aspect of the diseases, pathomechanisms, biomarkers, disease phases, symptomatology, etc., have provided a unique opportunity to better understand and appreciate the holistic nature of diseases, interconnectivity between organ systems, and importance of biological background in modifying disease trajectories and affecting outcomes. Such a holistic approach is badly needed to better understand TBI-induced conditions in their totality. Here, I briefly review what is known about long-COVID/PASC, its underlying-suspected-pathologies, the pathobiological changes induced by TBI, in other words, the TBI endophenotypes, discuss the intersection of long-COVID/PASC and TBI-induced pathobiologies, and how by considering some of the known factors affecting the person's biological background and the inclusion of mechanistic molecular biomarkers can help to improve the clinical management of TBI patients.
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Affiliation(s)
- Denes V. Agoston
- Department of Anatomy, Physiology, and Genetics, School of Medicine, Uniformed Services University, Bethesda, Maryland, USA
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13
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Bernardino PN, Luo AS, Andrew PM, Unkel CM, Gonzalez MI, Gelli A, Lein PJ. Evidence Implicating Blood-Brain Barrier Impairment in the Pathogenesis of Acquired Epilepsy following Acute Organophosphate Intoxication. J Pharmacol Exp Ther 2024; 388:301-312. [PMID: 37827702 PMCID: PMC10801776 DOI: 10.1124/jpet.123.001836] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 09/14/2023] [Accepted: 09/18/2023] [Indexed: 10/14/2023] Open
Abstract
Organophosphate (OP) poisoning can trigger cholinergic crisis, a life-threatening toxidrome that includes seizures and status epilepticus. These acute toxic responses are associated with persistent neuroinflammation and spontaneous recurrent seizures (SRS), also known as acquired epilepsy. Blood-brain barrier (BBB) impairment has recently been proposed as a pathogenic mechanism linking acute OP intoxication to chronic adverse neurologic outcomes. In this review, we briefly describe the cellular and molecular components of the BBB, review evidence of altered BBB integrity following acute OP intoxication, and discuss potential mechanisms by which acute OP intoxication may promote BBB dysfunction. We highlight the complex interplay between neuroinflammation and BBB dysfunction that suggests a positive feedforward interaction. Lastly, we examine research from diverse models and disease states that suggest mechanisms by which loss of BBB integrity may contribute to epileptogenic processes. Collectively, the literature identifies BBB impairment as a convergent mechanism of neurologic disease and justifies further mechanistic research into how acute OP intoxication causes BBB impairment and its role in the pathogenesis of SRS and potentially other long-term neurologic sequelae. Such research is critical for evaluating BBB stabilization as a neuroprotective strategy for mitigating OP-induced epilepsy and possibly seizure disorders of other etiologies. SIGNIFICANCE STATEMENT: Clinical and preclinical studies support a link between blood-brain barrier (BBB) dysfunction and epileptogenesis; however, a causal relationship has been difficult to prove. Mechanistic studies to delineate relationships between BBB dysfunction and epilepsy may provide novel insights into BBB stabilization as a neuroprotective strategy for mitigating epilepsy resulting from acute organophosphate (OP) intoxication and non-OP causes and potentially other adverse neurological conditions associated with acute OP intoxication, such as cognitive impairment.
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Affiliation(s)
- Pedro N Bernardino
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Audrey S Luo
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Peter M Andrew
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Chelsea M Unkel
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Marco I Gonzalez
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Angie Gelli
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
| | - Pamela J Lein
- Department of Molecular Biosciences, University of California, Davis, School of Veterinary Medicine, Davis, California (P.N.B., A.S.L., P.M.A., C.M.U., P.J.L.); Department of Neurology, University of California, Davis, School of Medicine, Sacramento, California (M.I.G.); and Department of Pharmacology, University of California, Davis, School of Medicine, Davis, California (A.G.)
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14
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To XV, Mohamed AZ, Cumming P, Nasrallah FA. Diffusion tensor imaging and plasma immunological biomarker panel in a rat traumatic brain injury (TBI) model and in human clinical TBI. Front Immunol 2024; 14:1293471. [PMID: 38259455 PMCID: PMC10800599 DOI: 10.3389/fimmu.2023.1293471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/11/2023] [Indexed: 01/24/2024] Open
Abstract
Introduction Neuroinflammatory reactions play a significant role in the pathology and long-term consequences of traumatic brain injury (TBI) and may mediate salutogenic processes that white matter integrity. This study aimed to investigate the relationship between inflammatory markers and white matter integrity following TBI in both a rat TBI model and clinical TBI cases. Methods In the rat model, blood samples were collected following a controlled cortical impact (CCI) to assess a panel of inflammatory markers; MR-based diffusion tensor imaging (DTI) was employed to evaluate white matter integrity 60 days post-injury. 15 clinical TBI patients were similarly assessed for a panel of inflammatory markers and DTI post-intensive care unit discharge. Blood samples from healthy controls were used for comparison of the inflammatory markers. Results Time-dependent elevations in immunological markers were observed in TBI rats, with a correlation to preserved fractional anisotropy (FA) in white matter. Specifically, TBI-induced increased plasma levels of IL-1β, IL-6, G-CSF, CCL3, CCL5, and TNF-α were associated with higher white matter integrity, as measured by FA. Clinical cases had similar findings: elevated inflammatory markers (relative to controls) were associated with preservation of FA in vulnerable white matter regions. Discussion Inflammatory markers in post-TBI plasma samples are ambivalent with respect to prediction of favourable outcome versus a progression to more pervasive pathology and morbidity.
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Affiliation(s)
- Xuan Vinh To
- The Queensland Brain Institute, The University of Queensland, Queensland, Australia
| | - Abdalla Z. Mohamed
- The Queensland Brain Institute, The University of Queensland, Queensland, Australia
- Thompson Institute, University of the Sunshine Coast, Queensland, Australia
| | - Paul Cumming
- Department of Nuclear Medicine, Bern University Hospital, Bern, Switzerland
- School of Psychology and Counselling, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Fatima A. Nasrallah
- The Queensland Brain Institute, The University of Queensland, Queensland, Australia
- The Centre for Advanced Imaging, The University of Queensland, Queensland, Australia
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15
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Lv W, Jiang X, Zhang Y. The role of platelets in the blood-brain barrier during brain pathology. Front Cell Neurosci 2024; 17:1298314. [PMID: 38259501 PMCID: PMC10800710 DOI: 10.3389/fncel.2023.1298314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 12/11/2023] [Indexed: 01/24/2024] Open
Abstract
Platelets play critical roles in maintaining hemostasis. The blood brain barrier (BBB), a significant physical and metabolic barrier, helps maintain physiological stability by limiting transportations between the blood and neural tissues. When the brain undergoes inflammation, tumor, trauma, or bleeding, the platelet responses to help with maintaining BBB homeostasis. In the traditional point of view, activated platelets aggregate to form thrombi which cover the gaps of the blood vessels to protect BBB. However, increasing evidences indicate that platelets may harm BBB by enhancing vascular permeability. Hereby, we reviewed recently published articles with a special focus on the platelet-mediated damage of BBB. Factors released by platelets can induce BBB permeability, which involve platelet-activating factors (PAF), P-selectin, ADP, platelet-derived growth factors (PDGF) superfamily proteins, especially PDGF-AA and PDGF-CC, etc. Platelets can also secrete Amyloid-β (Aβ), which triggers neuroinflammation and downregulates the expression of tight junction molecules such as claudin-5 to damage BBB. Additionally, platelets can form aggregates with neutrophils to release reactive oxygen species (ROS), which can destroy the DNA, proteins, and lipids of endothelial cells (ECs). Moreover, platelets participate in neuroinflammation to affect BBB. Conversely, some of the platelet released factors such as PDGF-BB, protects BBB. In summary, platelets play dual roles in BBB integrity and the related mechanisms are reviewed.
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Affiliation(s)
| | - Xiaofan Jiang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Yanyu Zhang
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi’an, China
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16
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Whitehead B, Corbin D, Albowaidey A, Zhang N, Karelina K, Weil ZM. Mild traumatic brain injury induces pericyte detachment independent of stroke vulnerability. Neurosci Lett 2024; 818:137552. [PMID: 37949292 PMCID: PMC10913758 DOI: 10.1016/j.neulet.2023.137552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/03/2023] [Accepted: 11/05/2023] [Indexed: 11/12/2023]
Abstract
Mild traumatic brain injury (mTBI) is an independent risk factor for ischemic stroke and can result in poorer outcomes- an effect presumed to involve the cerebral vasculature. Here we tested the hypothesis that mTBI-induced pericyte detachment from the cerebrovascular endothelium is responsible for worsened stroke outcomes. We performed a mild closed-head injury and/or treated C57/bl6 mice with imatinib mesylate, a tyrosine kinase inhibitor that induces pericyte detachment. The time course of pericyte detachment was assessed 7, 14, and 28 days post injury (DPI). To test the role of pericytes in TBI-induced exacerbation of ischemic stroke outcomes, we induced mTBI and/or treated mice with imatinib for one week prior to transient middle cerebral artery occlusion. We found that injury promoted pericyte detachment from the vasculature commensurate with the levels of detachment seen in imatinib-only treated animals, and that the detachment persisted for at least 14DPI, but recovered to sham levels by 28DPI. Further, mTBI, but not imatinib-induced pericyte detachment, increased infarct volume. Thus, we conclude that the transient detachment of pericytes caused by mTBI may not be sufficient to exacerbate subsequent ischemic stroke damage. These data have important implications for understanding cerebrovascular dysfunction following mTBI and potential mechanisms of increased risk for future ischemic strokes.
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Affiliation(s)
- Bailey Whitehead
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA.
| | - Deborah Corbin
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA
| | - Ali Albowaidey
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA
| | - Ning Zhang
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA
| | - Kate Karelina
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA
| | - Zachary M Weil
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, 108 Biomedical Rd, Morgantown, WV, 26506, USA
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17
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Wang B, Peng G, Chen L, Guo M, Zhou J, Liu Y, Chen Z, Wang L. Effect of transcutaneous electrical acupoint stimulation on remifentanil dosage during craniotomy aneurysm clipping: a prospective, randomized controlled study. BMC Complement Med Ther 2023; 23:453. [PMID: 38093254 PMCID: PMC10717748 DOI: 10.1186/s12906-023-04297-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/06/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Craniotomy aneurysm clipping is one of the main treatments for intracranial aneurysm (IA). Endotracheal intubation and intraoperative operation may induce dramatic hemodynamic fluctuations and increase the risk of aneurysm rupture. Intraoperative high-dose opioid use is the main measure to reduce the intraoperative stress response, but it increases the incidence of complications such as postoperative vomiting and delayed awakening. Transcutaneous electrical acupoint stimulation (TEAS) stimulates β-endorphin expression levels and reduces opioid requirements. In this study, we aimed to assess the effects of TEAS on remifentanil dosage and oxidative stress (OS) in craniotomy aneurysm clipping. METHOD Forty-two patients with craniotomy aneurysm clipping were randomized into two groups: the TEAS group (T group) and the sham TEAS group (S group). "Hegu" (LI4), "Neiguan" (PC6) and "Zusanli" points (ST36) were selected, and a "HANS" percutaneous acupoint electrical stimulator was used for intervention 30 min before anesthesia induction until the end of the operation. The primary outcome was intraoperative remifentanil dosage. The secondary outcomes were intraoperative propofol dosage, mean arterial pressure (MAP) and heart rate (HR) 5 min before the TEAS intervention (T0), 5 min before head holder pinning (T1), immediately after pinning (T2), 5 min before craniotomy (T3), immediately after craniotomy (T4), at craniotomy (T5), and at the end of surgery (T6), as well as serum β-endorphin levels at T1, T2 and T6 and neuron-specific enolase (NSE), S100β, superoxide dismutase (SOD) and malondialdehyde (MDA) levels at T1, T2 and 24 h after surgery (T7). RESULTS The dosage of remifentanil in the T group was reduced compared to that in the S group (P < 0.05). At T2, T4 and T5, the MAP and HR in the T group were lower than those in the S group (P < 0.05). At T2 and T7, the levels of NSE, S100β and MDA in group T were lower than those in group S (P < 0.05), while the SOD levels in group T were higher than those in group S (P < 0.05). CONCLUSIONS The use of TEAS can reduce the dosage of remifentanil and reduce hemodynamic fluctuations during craniotomy aneurysm clipping. It reduces the occurrence of OS and central nervous system damage during surgery and has a certain brain protective effect. TRIAL REGISTRATION ChiCTR2100052353. https://www.chictr.org.cn/about.html .
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Affiliation(s)
- Bingyu Wang
- The First Clinical College of Medicine, Gannan Medical University, Ganzhou, 34100, China
- The Second Hospital of Ningbo, Ningbo, 315100, China
| | - Guanfa Peng
- The First Clinical College of Medicine, Gannan Medical University, Ganzhou, 34100, China
| | - Li Chen
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, No. 128, Jinling West Road, Ganzhou, 34100, China
| | - Mingling Guo
- The First Clinical College of Medicine, Gannan Medical University, Ganzhou, 34100, China
| | - Jianshun Zhou
- The First Clinical College of Medicine, Gannan Medical University, Ganzhou, 34100, China
| | - Yingying Liu
- The First Clinical College of Medicine, Gannan Medical University, Ganzhou, 34100, China
| | - Zhen Chen
- The First Clinical College of Medicine, Gannan Medical University, Ganzhou, 34100, China
| | - Lifeng Wang
- Department of Anesthesiology, The First Affiliated Hospital of Gannan Medical University, No. 128, Jinling West Road, Ganzhou, 34100, China.
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18
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Zuo M, He Y, Chen L, Li G, Liu Q, Hou X, Huang J, Zhou L, Jiang Y, Liang D, Zhou Z. Increased Neuron-Specific Enolase Level Predicts Symptomatic Intracranial Hemorrhage in Patients with Ischemic Stroke Treated with Endovascular Treatment. World Neurosurg 2023; 180:e302-e308. [PMID: 37748735 DOI: 10.1016/j.wneu.2023.09.065] [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: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
BACKGROUND Neuron-specific enolase (NSE), which is a highly specific marker for neurons, could be a predictor for prognosis in patients with symptomatic intracranial hemorrhage (sICH) with acute ischemic stroke who are receiving endovascular treatment (EVT). This study aimed to investigate the relationship between NSE and sICH in patients with acute anterior circulation stroke undergoing EVT. METHODS A total of 215 consecutive patients with acute stroke treated with EVT were included. Patients with stroke and acute anterior circulation occlusion, receiving EVT treated at our hospital, were enrolled between January 2017 and August 2021. NSE level was measured on arrival at the neurology intensive care unit after EVT. The patients were divided into 2 groups according to whether sICH was present. Univariate and multivariate analyses were performed. NSE level was also incorporated into the TAG score (modified Thrombolysis in Cerebral Infarction score, Alberta Stroke Program Early CT Score, and glucose level), which was developed as a scoring system to predict sICH, and the prediction capability was compared with the TAG score alone. Causal inference was performed using the package DoWhy in Python to evaluate the causal relationship between NSE and sICH. RESULTS The area under the curve (AUC) value of NSE showed moderate accuracy, with an AUC value of 0.729 (95% confidence interval, 0.655-0.795; P < 0.001). The NSE cutoff value was set at 23.88 ng/mL. When the NSE level ≥23.88 ng/mL, the sensitivity was 58.33% and the specificity was 78.72% (P < 0.001). The AUC for the TAG + NSE score was 0.801 compared with an AUC of 0.632 for the TAG score (Z = 2.034; P = 0.042). A causal inference model using the DoWhy library shows a proportional relationship between NSE and the diagnosis of sICH. CONCLUSIONS This study is the first to show that increased NSE level is an independent predictor of sICH in patients with acute anterior circulation stroke who are undergoing endovascular treatment.
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Affiliation(s)
- Meng Zuo
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Yuxuan He
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Lin Chen
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Guangjian Li
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Qu Liu
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Xianhua Hou
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Jialu Huang
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Linke Zhou
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Ying Jiang
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Dingwen Liang
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China
| | - Zhenhua Zhou
- Department of Neurology, Southwest Hospital, Third Military Medical University, Army Medical University, Chongqing, China.
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19
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Whitehead B, Karelina K, Weil ZM. Pericyte dysfunction is a key mediator of the risk of cerebral ischemia. J Neurosci Res 2023; 101:1840-1848. [PMID: 37724604 DOI: 10.1002/jnr.25245] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/15/2023] [Accepted: 09/04/2023] [Indexed: 09/21/2023]
Abstract
Pericytes are critical yet understudied cells that are a central component of the neurovascular unit. They are connected to the cerebrovascular endothelium and help control vascular contractility and maintain the blood-brain barrier. Pericyte dysfunction has the potential to mediate many of the deleterious vascular consequences of ischemic stroke. Current therapeutics are designed to be administered after stroke onset and limit damage, but there are few options to target vascular risk factors pre-ischemia which likely contribute to stroke outcomes. Here, we focus on the role of pericytes in health and disease, and discuss how pericyte dysfunction can increase the risk of ischemic injury. Additionally, we note that despite the importance of pericytes in cerebrovascular disease, there are relatively few current therapeutic options that target pericyte function.
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Affiliation(s)
- Bailey Whitehead
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Kate Karelina
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Zachary M Weil
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
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20
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Gao P, Yi J, Chen W, Gu J, Miao S, Wang X, Huang Y, Jiang T, Li Q, Zhou W, Zhao S, Wu M, Yin G, Chen J. Pericyte-derived exosomal miR-210 improves mitochondrial function and inhibits lipid peroxidation in vascular endothelial cells after traumatic spinal cord injury by activating JAK1/STAT3 signaling pathway. J Nanobiotechnology 2023; 21:452. [PMID: 38012616 PMCID: PMC10680350 DOI: 10.1186/s12951-023-02110-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/15/2023] [Indexed: 11/29/2023] Open
Abstract
BACKGROUND Spinal cord injury (SCI) remains a significant health concern, with limited available treatment options. This condition poses significant medical, economic, and social challenges. SCI is typically categorized into primary and secondary injuries. Inflammation, oxidative stress, scar formation, and the immune microenvironment impede axon regeneration and subsequent functional restoration. Numerous studies have shown that the destruction of the blood-brain barrier (BBB) and microvessels is a crucial factor in severe secondary injury. Additionally, reactive oxygen species (ROS)-induced lipid peroxidation significantly contributes to endothelial cell death. Pericytes are essential constituents of the BBB that share the basement membrane with endothelial cells and astrocytes. They play a significant role in the establishment and maintenance of BBB. RESULTS Immunofluorescence staining at different time points revealed a consistent correlation between pericyte coverage and angiogenesis, suggesting that pericytes promote vascular repair via paracrine signaling. Pericytes undergo alterations in cellular morphology and the transcriptome when exposed to hypoxic conditions, potentially promoting angiogenesis. We simulated an early ischemia-hypoxic environment following SCI using glucose and oxygen deprivation and BBB models. Co-culturing pericytes with endothelial cells improved barrier function compared to the control group. However, this enhancement was reduced by the exosome inhibitor, GW4869. In vivo injection of exosomes improved BBB integrity and promoted motor function recovery in mice following SCI. Subsequently, we found that pericyte-derived exosomes exhibited significant miR-210-5p expression based on sequencing analysis. Therefore, we performed a series of gain- and loss-of-function experiments in vitro. CONCLUSION Our findings suggest that miR-210-5p regulates endothelial barrier function by inhibiting JAK1/STAT3 signaling. This process is achieved by regulating lipid peroxidation levels and improving mitochondrial function, suggesting a potential mechanism for restoration of the blood-spinal cord barrier (BSCB) after SCI.
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Affiliation(s)
- Peng Gao
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Jiang Yi
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Wenjun Chen
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
- Department of Orthopedic, Changzheng Hospital, No. 415 Fengyang Road, Shanghai, 200003, People's Republic of China
| | - Jun Gu
- Department of Orthopedic, Wuxi Xishan People's Hospital, No. 1128 Dacheng Road, Wuxi, 214105, People's Republic of China
| | - Sheng Miao
- Department of Orthopedic, Suqian First People's Hospital, No. 120 Suzhi Road, Suqian, 223812, People's Republic of China
| | - Xiaowei Wang
- Department of Orthopedic, Maanshan People's Hospital, No. 45 Hubei Road, Maanshan, 243000, Anhui, People's Republic of China
| | - Yifan Huang
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Tao Jiang
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Qingqing Li
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Wei Zhou
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China
| | - Shujie Zhao
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Mengyuan Wu
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Guoyong Yin
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
| | - Jian Chen
- Department of Orthopedic, the First Affiliated Hospital of Nanjing Medical University, No. 300 Guangzhou Road, Nanjing, 210029, People's Republic of China.
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21
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Teske NC, Dyckhoff-Shen S, Beckenbauer P, Bewersdorf JP, Engelen-Lee JY, Hammerschmidt S, Kälin RE, Pfister HW, Brouwer MC, Klein M, Glass R, van de Beek D, Koedel U. Pericytes are protective in experimental pneumococcal meningitis through regulating leukocyte infiltration and blood-brain barrier function. J Neuroinflammation 2023; 20:267. [PMID: 37978545 PMCID: PMC10655320 DOI: 10.1186/s12974-023-02938-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 10/27/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Brain pericytes participate in the regulation of cerebral blood flow and the maintenance of blood-brain barrier integrity. Because of their perivascular localization, their receptor repertoire, and their potential ability to respond to inflammatory and infectious stimuli by producing various cytokines and chemokines, these cells are also thought to play an active role in the immune response to brain infections. This assumption is mainly supported by in vitro studies, investigations in in vivo disease models are largely missing. Here, we analysed the role of brain pericytes in pneumococcal meningitis, in vitro and in vivo in two animal models of pneumococcal meningitis. METHODS Primary murine and human pericytes were stimulated with increasing concentrations of different serotypes of Streptococcus pneumoniae in the presence or absence of Toll-like receptor inhibitors and their cell viability and cytokine production were monitored. To gain insight into the role of pericytes in brain infection in vivo, we performed studies in a zebrafish embryo model of pneumococcal meningitis in which pericytes were pharmacologically depleted. Furthermore, we analyzed the impact of genetically induced pericyte ablation on disease progression, intracranial complications, and brain inflammation in an adult mouse model of this disease. RESULTS Both murine and human pericytes reacted to pneumococcal exposure with the release of selected cytokines. This cytokine release is pneumolysin-dependent, TLR-dependent in murine (but not human) pericytes and can be significantly increased by macrophage-derived IL-1b. Pharmacological depletion of pericytes in zebrafish embryos resulted in increased cerebral edema and mortality due to pneumococcal meningitis. Correspondingly, in an adult mouse meningitis model, a more pronounced blood-brain barrier disruption and leukocyte infiltration, resulting in an unfavorable disease course, was observed following genetic pericyte ablation. The degree of leukocyte infiltration positively correlated with an upregulation of chemokine expression in the brains of pericyte-depleted mice. CONCLUSIONS Our findings show that pericytes play a protective role in pneumococcal meningitis by impeding leukocyte migration and preventing blood-brain barrier breaching. Thus, preserving the integrity of the pericyte population has the potential as a new therapeutic strategy in pneumococcal meningitis.
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Affiliation(s)
- Nina C Teske
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany.
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland.
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, The Netherlands.
- Department of Neurosurgery, LMU University Hospital, LMU Munich, Munich, Germany.
| | | | - Paul Beckenbauer
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
| | | | - Joo-Yeon Engelen-Lee
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Sven Hammerschmidt
- Department Genetics of Microorganisms, Interfaculty Institute of Genetics and Functional Genomics, University of Greifswald, Greifswald, Germany
| | - Roland E Kälin
- Neurosurgical Research, Department of Neurosurgery, LMU University Hospital, LMU Munich, Munich, Germany
- Walter Brendel Center of Experimental Medicine, Faculty of Medicine, LMU Munich, Munich, Germany
| | - Hans-Walter Pfister
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland
| | - Matthijs C Brouwer
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Matthias Klein
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland
| | - Rainer Glass
- Neurosurgical Research, Department of Neurosurgery, LMU University Hospital, LMU Munich, Munich, Germany
| | - Diederik van de Beek
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Uwe Koedel
- Department of Neurology, LMU University Hospital, LMU Munich, Munich, Germany
- ESCMID Study Group for Infections of the Brain, Basel, Switzerland
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22
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Wu X, Xu J, Li J, Deng M, Shen Z, Nie K, Luo W, Zhang C, Ma K, Chen X, Wang X. Bacteroides vulgatus alleviates dextran sodium sulfate-induced colitis and depression-like behaviour by facilitating gut-brain axis balance. Front Microbiol 2023; 14:1287271. [PMID: 38033588 PMCID: PMC10687441 DOI: 10.3389/fmicb.2023.1287271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/30/2023] [Indexed: 12/02/2023] Open
Abstract
Background Patients with inflammatory bowel disease (IBD) have a higher prevalence of depression. Gut microbiota dysbiosis plays an important role in IBD and depression. However, few studies have explored the characteristic microbiota of patients with IBD and depression (IBDD), or their role in IBDD. Methods We performed deep metagenomic sequencing and 16S rDNA quantitative PCR to characterise the gut microbial communities of patients with IBDD and patients with IBD without depression (IBDND). We then assessed the effect of the microbiota on colitis and depression in mouse models of dextran sulfate sodium salt (DSS)-induced colitis and lipopolysaccharide (LPS)-induced depression. Furthermore, liquid chromatography-tandem mass spectrometry was used to analyse the microbiota-derived metabolites involved in gut-brain communication. Evans Blue tracer dye was used to assess blood-brain barrier (BBB) permeability. Results Our results showed that the faecal abundance of Bacteroides vulgatus (B. vulgatus) was lower in patients with IBDD than in those with IBDND. In the DSS-induced colitis mouse model, the B. vulgatus group showed a significantly lower disease activity index score, lesser weight loss, and longer colon length than the DSS group. Moreover, B. vulgatus relieved depression-like behaviour in the DSS-induced colitis mouse model and in the LPS-induced depression mouse model. Furthermore, the key metabolite of B. vulgatus was p-hydroxyphenylacetic acid (4-HPAA), which was found to relieve intestinal inflammation and alleviate depression-like behaviours in mouse models. By increasing the expression of the tight junction protein claudin-5 in the vascular endothelium of the BBB, B. vulgatus and 4-HPAA play critical roles in gut-brain communication. Conclusion B. vulgatus and B. vulgatus-derived 4-HPAA ameliorated intestinal inflammation and relieved depressive symptoms through the gut-brain axis. Thus, administration of B. vulgatus or 4-HPAA supplementation is a promising therapeutic strategy for treating IBD, particularly IBDD.
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Affiliation(s)
- Xing Wu
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Jiahao Xu
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Jingbo Li
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Minzi Deng
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhaohua Shen
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Kai Nie
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Weiwei Luo
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Chao Zhang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Kejia Ma
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Xuejie Chen
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
| | - Xiaoyan Wang
- Department of Gastroenterology, The Third Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Cancer Research Institute, Central South University, Changsha, China
- Furong Laboratory, Changsha, Hunan, China
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23
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Wang C, Xian L, Zheng S, Li J, Chen X, Wang S. Cranial venous-outflow obstruction promotes neuroinflammation via ADAM17/solTNF-α/NF-κB pathway following experimental TBI. Brain Res Bull 2023; 204:110804. [PMID: 37918697 DOI: 10.1016/j.brainresbull.2023.110804] [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: 03/30/2022] [Revised: 09/13/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
Traumatic brain injury (TBI) is a global public health problem. As an important cause of secondary injury, cerebrovascular reaction can cause secondary bleeding, venous sinus thrombosis, and malignant brain swelling. Recent clinical studies have confirmed that intracranial venous return disorder is closely related to the prognosis of patients, yet the specific molecular mechanism involved in this process is still unclear. This study used an acute subdural hematoma (ASDH) model with cranial venous outflow obstruction (CVO) to explore how CVO aggravates the pathological process after TBI, especially for inflammation and tissue damage. The results suggest that intracranial venous return disorder exacerbates neurological deficits and brain edema in rats with ASDH by aggravating the destruction of endothelial cell tight junctions (TJs) proteins and promoting the expression of inflammatory factors, the activation of microglia and expression of recombinant A disintegrin and metalloprotease 17 (ADAM17) as well as the secretion of solTNF-α, a soluble form of tumor necrosis factor-alpha (TNFα), which in turn increase IκB-α ((inhibitor of the transcription factor nuclear factor-κB) and NF-κB p65. Our study revealed a molecular basis of how CVO aggravates inflammation and tissue damage.
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Affiliation(s)
- Cheng Wang
- Department of Neurosurgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, PR China; Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, PR China
| | - Liang Xian
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, PR China
| | - Shaorui Zheng
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, PR China
| | - Jun Li
- Department of Neurosurgery, 900th Hospital, Fuzhou, PR China
| | - Xiangrong Chen
- Department of Neurosurgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, PR China.
| | - Shousen Wang
- Fuzong Clinical Medical College of Fujian Medical University, Fuzhou, PR China; Department of Neurosurgery, 900th Hospital, Fuzhou, PR China.
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24
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Berends E, van Oostenbrugge RJ, Foulquier S, Schalkwijk CG. Methylglyoxal, a highly reactive dicarbonyl compound, as a threat for blood brain barrier integrity. Fluids Barriers CNS 2023; 20:75. [PMID: 37875994 PMCID: PMC10594715 DOI: 10.1186/s12987-023-00477-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/10/2023] [Indexed: 10/26/2023] Open
Abstract
The brain is a highly metabolically active organ requiring a large amount of glucose. Methylglyoxal (MGO), a by-product of glucose metabolism, is known to be involved in microvascular dysfunction and is associated with reduced cognitive function. Maintenance of the blood-brain barrier (BBB) is essential to maintain optimal brain function and a large amount of evidence indicates negative effects of MGO on BBB integrity. In this review, we summarized the current literature on the effect of MGO on the different cell types forming the BBB. BBB damage by MGO most likely occurs in brain endothelial cells and mural cells, while astrocytes are most resistant to MGO. Microglia on the other hand appear to be not directly influenced by MGO but rather produce MGO upon activation. Although there is clear evidence that MGO affects components of the BBB, the impact of MGO on the BBB as a multicellular system warrants further investigation. Diminishing MGO stress can potentially form the basis for new treatment strategies for maintaining optimal brain function.
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Affiliation(s)
- Eline Berends
- Department of Internal Medicine, Maastricht University, Universiteitssingel, Maastricht, 50 6229ER, The Netherlands
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands
| | - Robert J van Oostenbrugge
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands
- School for Mental Health and Neuroscience (MHeNs), Maastricht University, Universiteitssingel 40, Maastricht, 6229ER, The Netherlands
- Department of Neurology, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25 6202AZ, Maastricht, The Netherlands
| | - Sébastien Foulquier
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands.
- Department of Neurology, Maastricht University Medical Centre (MUMC+), P. Debyelaan 25 6202AZ, Maastricht, The Netherlands.
- Department of Pharmacology and Toxicology, Maastricht University, Universiteitssingel 50 6229ER, Maastricht, The Netherlands.
| | - Casper G Schalkwijk
- Department of Internal Medicine, Maastricht University, Universiteitssingel, Maastricht, 50 6229ER, The Netherlands.
- Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Universiteitssingel 50, Maastricht, 6229ER, The Netherlands.
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25
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Wang K, Wang S, Yin J, Yang Q, Yu Y, Chen L. Long-term application of silver nanoparticles in dental restoration materials: potential toxic injury to the CNS. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2023; 34:52. [PMID: 37855967 PMCID: PMC10587321 DOI: 10.1007/s10856-023-06753-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 09/20/2023] [Indexed: 10/20/2023]
Abstract
Silver nanoparticles (AgNPs) have durable and remarkable antimicrobial effects on pathogenic microorganisms, such as bacteria and fungi, in dental plaques. As such, they are widely added to dental restoration materials, including composite resins, denture bases, adhesives, and implants, to solve the problems of denture stomatitis, peri-implant inflammation, and oral infection caused by the long-term use of these dental restoration materials. However, AgNPs can be absorbed into the blood circulatory system through the nasal/oral mucosa, lungs, gastrointestinal tract, skin, and other pathways and then distributed into the lungs, kidneys, liver, spleen, and testes, thereby causing toxic injury to these tissues and organs. It can even be transported across the blood-brain barrier (BBB) and continuously accumulate in brain tissues, causing injury and dysfunction of neurons and glial cells; consequently, neurotoxicity occurs. Other nanomaterials with antibacterial or remineralization properties are added to dental restoration materials with AgNPs. However, studies have yet to reveal the neurotoxicity caused by dental restoration materials containing AgNPs. In this review, we summarize the application of AgNPs in dental restoration materials, the mechanism of AgNPs in cytotoxicity and toxic injury to the BBB, and the related research on the accumulation of AgNPs to cause changes of neurotoxicity. We also discuss the mechanisms of neurotoxicity caused by AgNPs and the mode and rate of AgNPs released from dental restorative materials added with AgNPs to evaluate the probability of neurotoxic injury to the central nervous system (CNS), and then provide a theoretical basis for developing new composite dental restoration materials. Mechanism of neurotoxicity caused by AgNPs: AgNPs in the blood circulation enter the brain tissue after being transported across the BBB through transendothelial cell pathway and paracellular transport pathway, and continuously accumulate in brain tissue, causing damage and dysfunction of neurons and glial cells which ultimately leads to neurotoxicity. The uptake of AgNPs by neurons, astrocytes and microglia causes damage to these cells. AgNPs with non-neurotoxic level often increases the secretion of a variety of cytokines, up-regulates the expression of metallothionein in glial cells, even up-regulates autophagy and inflammation response to protect neurons from the toxic damage of AgNPs. However, the protective effect of glial cells induced by AgNPs exposure to neurotoxic levels is insufficient, which leads to neuronal damage and dysfunction and even neuronal programmed cell death, eventually cause neurotoxicity.
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Affiliation(s)
- Kaimei Wang
- Guiyang Hospital of Stomatology, Guiyang, Guizhou Province, 563000, China
| | - Shiqi Wang
- The Medical unit of 65651 troops of Chinese people's Liberation Army, Jinzhou, Liaoning Province, 121100, China
| | - Jingju Yin
- Fujian Medical University; Department of Stomatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350002, China
| | - Qiankun Yang
- The Southwest Hospital of Army Medical University, Chongqing, 400038, China
| | - Yi Yu
- Guiyang Hospital of Stomatology, Guiyang, Guizhou Province, 563000, China
| | - Lin Chen
- Hospital of Stomatology, Zunyi Medical University, Zunyi, Guizhou Province, 563100, China.
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26
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Zhao Y, Ma J, Cui Y, Lin H. A method to isolate human dermal microvascular pericytes without the use of magnetic beads sorting in vitro. Tissue Cell 2023; 84:102171. [PMID: 37480631 DOI: 10.1016/j.tice.2023.102171] [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: 04/17/2023] [Revised: 07/08/2023] [Accepted: 07/18/2023] [Indexed: 07/24/2023]
Abstract
Human dermal microvascular pericytes (HDMPCs) are a critical component of the skin flap microvasculature and play a role in regulating flap blood flow and integrity. Pericytes were isolated mostly via magnetic bead sorting in the published literature. In this study, we discuss in detail how to separate and concentrate pericytes from human facial flaps using enzyme digestion and differential adherence instead of magnetic bead sorting. Cultured HDMPCs were seen to have well-spread irregular edges, with most cells having two longitudinal pericytic processes. The phalloidin staining revealed that HDMPCs had prominent stress fibers, and the nucleus deviated to the side that interacted with the neighboring pericytic processes. Flow cytometry analysis showed that the positive rates of NG2 in the first and second passages were 91.2% ± 0.7% and 98.2% ± 0.1% separately. And the immunofluorescence and western blot results demonstrated a positive expression of α smooth muscle actin (αSMA), platelet-derived growth factor receptor β (PDGFRβ), and NG-2, while the endothelial cell marker CD31 was negatively expressed. In summary, we established a straightforward methodology for selectively isolating and identifying HDMPCs as well as generating high-purity cell cultures in vitro without the use of magnetic bead sorting.
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Affiliation(s)
- Yinhua Zhao
- Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, 2 Anzhen road, Chaoyang district, Beijing 100029, China
| | - Jiaxing Ma
- Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, 2 Anzhen road, Chaoyang district, Beijing 100029, China
| | - Yue Cui
- Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, 2 Anzhen road, Chaoyang district, Beijing 100029, China
| | - Huang Lin
- Plastic and Reconstructive Surgery, Beijing Anzhen Hospital, Capital Medical University, 2 Anzhen road, Chaoyang district, Beijing 100029, China.
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27
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Lin L, Zheng S, Lai J, Ye D, Huang Q, Wu Z, Chen X, Wang S. Omega-3 Polyunsaturated Fatty Acids Protect Neurological Function After Traumatic Brain Injury by Suppressing Microglial Transformation to the Proinflammatory Phenotype and Activating Exosomal NGF/TrkA Signaling. Mol Neurobiol 2023; 60:5592-5606. [PMID: 37329381 DOI: 10.1007/s12035-023-03419-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 06/01/2023] [Indexed: 06/19/2023]
Abstract
The transformation of microglia to a pro-inflammatory phenotype at the site of traumatic brain injury (TBI) drives the progression of secondary neurodegeneration and irreversible neurological impairment. Omega-3 polyunsaturated fatty acids (PUFA) have been shown to suppress this phenotype transformation, thereby reducing neuroinflammation following TBI, but the molecular mechanisms are unknown. We found that Omega-3 PUFA suppressed the expression of disintegrin metalloproteinase (ADAM17), the enzyme required to convert tumor necrosis factor-α (TNF-α) to the soluble form, thereby inhibiting the TNF-α/NF-κB pathway both in vitro and in a mouse model of TBI. Omega-3 PUFA also prevented the reactive transformation of microglia and promoted the secretion of microglial exosomes containing nerve growth factor (NGF), activating the neuroprotective NGF/TrkA pathway both in culture and TBI model mice. Moreover, Omega-3 PUFA suppressed the pro-apoptotic NGF/P75NTR pathway at the TBI site and reduced apoptotic neuronal death, brain edema, and disruption of the blood-brain barrier. Finally, Omega-3 PUFA preserved sensory and motor function as assessed by two broad-spectrum test batteries. The beneficial effects of Omega-3 PUFA were blocked by an ADAM17 promotor and by a NGF inhibitor, confirming the pathogenic function of ADAM17 and the central neuroprotective role of NGF. Collectively, these findings provide a strong experimental basis for Omega-3 PUFA as a potential clinical treatment for TBI.
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Affiliation(s)
- Long Lin
- Department of Neurosurgery, Fuzong Clinical Medical College, Fujian Medical University, Fuzhou, 350025, Fujian Province, China
| | - Shaorui Zheng
- Department of Neurosurgery, Affiliated Hospital of Putian University, Putian, 351100, Fujian Province, China
| | - Jinqing Lai
- Department of Neurosurgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Dan Ye
- Fujian University of Traditional Chinese Medicine, Fuzhou, 350025, Fujian Province, China
| | - Qiaomei Huang
- Department of Anaesthesiology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, China
| | - Zhe Wu
- Department of Neurosurgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, 362000, Fujian Province, China
| | - Xiangrong Chen
- Department of Neurosurgery, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, 362000, Fujian Province, China.
| | - Shousen Wang
- Department of Neurosurgery, 900th Hospital, Fuzhou, 350025, Fujian Province, China.
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Novoseletskaya ES, Evdokimov PV, Efimenko AY. Extracellular matrix-induced signaling pathways in mesenchymal stem/stromal cells. Cell Commun Signal 2023; 21:244. [PMID: 37726815 PMCID: PMC10507829 DOI: 10.1186/s12964-023-01252-8] [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: 06/16/2023] [Accepted: 07/31/2023] [Indexed: 09/21/2023] Open
Abstract
The extracellular matrix (ECM) is a crucial component of the stem cell microenvironment, or stem-cell niches, and contributes to the regulation of cell behavior and fate. Accumulating evidence indicates that different types of stem cells possess a large variety of molecules responsible for interactions with the ECM, mediating specific epigenetic rearrangements and corresponding changes in transcriptome profile. Signals from the ECM are crucial at all stages of ontogenesis, including embryonic and postnatal development, as well as tissue renewal and repair. The ECM could regulate stem cell transition from a quiescent state to readiness to perceive the signals of differentiation induction (competence) and the transition between different stages of differentiation (commitment). Currently, to unveil the complex networks of cellular signaling from the ECM, multiple approaches including screening methods, the analysis of the cell matrixome, and the creation of predictive networks of protein-protein interactions based on experimental data are used. In this review, we consider the existing evidence regarded the contribution of ECM-induced intracellular signaling pathways into the regulation of stem cell differentiation focusing on mesenchymal stem/stromal cells (MSCs) as well-studied type of postnatal stem cells totally depended on signals from ECM. Furthermore, we propose a system biology-based approach for the prediction of ECM-mediated signal transduction pathways in target cells. Video Abstract.
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Affiliation(s)
- Ekaterina Sergeevna Novoseletskaya
- Faculty of Biology, Dayun New Town, Shenzhen MSU-BIT University, 1 International University Park Road, Dayun New Town, Longgang District, Shenzhen, Guangdong Province, P. R. China.
- Institute for Regenerative Medicine, Medical Research and Education Center, Lomonosov Moscow State University, Lomonosov Ave., 27/10, 119991, Moscow, Russia.
| | - Pavel Vladimirovich Evdokimov
- Materials Science Department, Lomonosov Moscow State University, Leninskie Gory, 1, Building 73, 119991, Moscow, Russia
- Chemistry Department, Lomonosov Moscow State University, GSP-1, Leninskiye Gory, 1-3, Moscow, Russia
| | - Anastasia Yurievna Efimenko
- Institute for Regenerative Medicine, Medical Research and Education Center, Lomonosov Moscow State University, Lomonosov Ave., 27/10, 119991, Moscow, Russia
- Faculty of Medicine, Lomonosov Moscow State University, Lomonosov Ave., 27/1, 119991, Moscow, Russia
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29
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Li C, Chen S, Siedhoff HR, Grant D, Liu P, Balderrama A, Jackson M, Zuckerman A, Greenlief CM, Kobeissy F, Wang KW, DePalma RG, Cernak I, Cui J, Gu Z. Low-intensity open-field blast exposure effects on neurovascular unit ultrastructure in mice. Acta Neuropathol Commun 2023; 11:144. [PMID: 37674234 PMCID: PMC10481586 DOI: 10.1186/s40478-023-01636-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/14/2023] [Indexed: 09/08/2023] Open
Abstract
Mild traumatic brain injury (mTBI) induced by low-intensity blast (LIB) is a serious health problem affecting military service members and veterans. Our previous reports using a single open-field LIB mouse model showed the absence of gross microscopic damage or necrosis in the brain, while transmission electron microscopy (TEM) identified ultrastructural abnormalities of myelin sheaths, mitochondria, and synapses. The neurovascular unit (NVU), an anatomical and functional system with multiple components, is vital for the regulation of cerebral blood flow and cellular interactions. In this study, we delineated ultrastructural abnormalities affecting the NVU in mice with LIB exposure quantitatively and qualitatively. Luminal constrictive irregularities were identified at 7 days post-injury (DPI) followed by dilation at 30 DPI along with degeneration of pericytes. Quantitative proteomic analysis identified significantly altered vasomotor-related proteins at 24 h post-injury. Endothelial cell, basement membrane and astrocyte end-foot swellings, as well as vacuole formations, occurred in LIB-exposed mice, indicating cellular edema. Structural abnormalities of tight junctions and astrocyte end-foot detachment from basement membranes were also noted. These ultrastructural findings demonstrate that LIB induces multiple-component NVU damage. Prevention of NVU damage may aid in identifying therapeutic targets to mitigate the effects of primary brain blast injury.
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Affiliation(s)
- Chao Li
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510630, China
| | - Shanyan Chen
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
- Truman VA Hospital Research Service, Columbia, MO, 65201, USA
| | - Heather R Siedhoff
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
- Truman VA Hospital Research Service, Columbia, MO, 65201, USA
| | - DeAna Grant
- Electron Microscopy Core Facility, University of Missouri, Columbia, MO, 65211, USA
| | - Pei Liu
- Charles W. Gehrke Proteomic Center, University of Missouri, Columbia, MO, 65211, USA
| | - Ashley Balderrama
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
- Truman VA Hospital Research Service, Columbia, MO, 65201, USA
| | - Marcus Jackson
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
| | - Amitai Zuckerman
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
- Truman VA Hospital Research Service, Columbia, MO, 65201, USA
| | - C Michael Greenlief
- Charles W. Gehrke Proteomic Center, University of Missouri, Columbia, MO, 65211, USA
| | - Firas Kobeissy
- Department of Neurobiology, Center for Neurotrauma, Multiomics & Biomarkers (CNMB), Neuroscience Institute, Morehouse School of Medicine, Atlanta, GA, 30310-1458, USA
- Atlanta VA Medical and Rehab Center, Decatur, GA, 30033, USA
| | - Kevin W Wang
- Department of Neurobiology, Center for Neurotrauma, Multiomics & Biomarkers (CNMB), Neuroscience Institute, Morehouse School of Medicine, Atlanta, GA, 30310-1458, USA
- Atlanta VA Medical and Rehab Center, Decatur, GA, 30033, USA
| | - Ralph G DePalma
- Office of Research and Development, Department of Veterans Affairs, Washington, DC, 20420, USA
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA
| | - Ibolja Cernak
- Department of Biomedical Sciences, Mercer University School of Medicine, Macon, GA, 31207, USA
| | - Jiankun Cui
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA
- Truman VA Hospital Research Service, Columbia, MO, 65201, USA
| | - Zezong Gu
- Department of Pathology & Anatomical Sciences, University of Missouri School of Medicine, One Hospital Drive, Medical Science Building, M741, Columbia, MO, 65212, USA.
- Truman VA Hospital Research Service, Columbia, MO, 65201, USA.
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30
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Zhao ZA, Yan L, Wen J, Satyanarayanan SK, Yu F, Lu J, Liu YU, Su H. Cellular and molecular mechanisms in vascular repair after traumatic brain injury: a narrative review. BURNS & TRAUMA 2023; 11:tkad033. [PMID: 37675267 PMCID: PMC10478165 DOI: 10.1093/burnst/tkad033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 02/01/2023] [Accepted: 05/26/2023] [Indexed: 09/08/2023]
Abstract
Traumatic brain injury (TBI) disrupts normal brain function and is associated with high morbidity and fatality rates. TBI is characterized as mild, moderate or severe depending on its severity. The damage may be transient and limited to the dura matter, with only subtle changes in cerebral parenchyma, or life-threatening with obvious focal contusions, hematomas and edema. Blood vessels are often injured in TBI. Even in mild TBI, dysfunctional cerebral vascular repair may result in prolonged symptoms and poor outcomes. Various distinct types of cells participate in vascular repair after TBI. A better understanding of the cellular response and function in vascular repair can facilitate the development of new therapeutic strategies. In this review, we analyzed the mechanism of cerebrovascular impairment and the repercussions following various forms of TBI. We then discussed the role of distinct cell types in the repair of meningeal and parenchyma vasculature following TBI, including endothelial cells, endothelial progenitor cells, pericytes, glial cells (astrocytes and microglia), neurons, myeloid cells (macrophages and monocytes) and meningeal lymphatic endothelial cells. Finally, possible treatment techniques targeting these unique cell types for vascular repair after TBI are discussed.
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Affiliation(s)
- Zi-Ai Zhao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
- Department of Neurology, General Hospital of Northern Theater Command, 83# Wen-Hua Road, Shenyang 110840, China
| | - Lingli Yan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Jing Wen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Senthil Kumaran Satyanarayanan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Feng Yu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Jiahong Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
| | - Yong U Liu
- Laboratory of Neuroimmunology in Health and Disease Institute, Guangzhou First People’s Hospital School of Medicine, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou 511400, China
| | - Huanxing Su
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Avenida da Universidade, Taipa, Macau 999078, China
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Wu Y, Li P, Bhat N, Fan H, Liu M. Effects of repeated sleep deprivation on brain pericytes in mice. Sci Rep 2023; 13:12760. [PMID: 37550395 PMCID: PMC10406921 DOI: 10.1038/s41598-023-40138-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/05/2023] [Indexed: 08/09/2023] Open
Abstract
The damaging effects of sleep deprivation (SD) on brain parenchyma have been extensively studied. However, the specific influence of SD on brain pericytes, a primary component of the blood-brain barrier (BBB) and the neurovascular unit (NVU), is still unclear. The present study examined how acute or repeated SD impairs brain pericytes by measuring the cerebrospinal fluid (CSF) levels of soluble platelet-derived growth factor receptor beta (sPDGFRβ) and quantifying pericyte density in the cortex, hippocampus, and subcortical area of the PDGFRβ-P2A-CreERT2/tdTomato mice, which predominantly express the reporter tdTomato in vascular pericytes. Our results showed that a one-time 4 h SD did not significantly change the CSF sPDGFRβ level. In contrast, repeated SD (4 h/day for 10 consecutive days) significantly elevated the CSF sPDGFRβ level, implying explicit pericyte damages due to repeated SD. Furthermore, repeated SD significantly decreased the pericyte densities in the cortex and hippocampus, though the pericyte apoptosis status remained unchanged as measured with Annexin V-affinity assay and active Caspase-3 staining. These results suggest that repeated SD causes brain pericyte damage and loss via non-apoptosis pathways. These changes to pericytes may contribute to SD-induced BBB and NVU dysfunctions. The reversibility of this process implies that sleep improvement may have a protective effect on brain pericytes.
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Affiliation(s)
- Yan Wu
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Pengfei Li
- Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Narayan Bhat
- Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Hongkuan Fan
- Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Meng Liu
- Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA.
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32
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To XV, Donnelly P, Maclachlan L, Mahady K, Apellaniz EM, Cumming P, Winter C, Nasrallah F. Anti-inflammatory interleukin 1 receptor antagonist concentration in plasma correlates with blood-brain barrier integrity in the primary lesion area in traumatic brain injury patients. Brain Behav Immun Health 2023; 31:100653. [PMID: 37415924 PMCID: PMC10320227 DOI: 10.1016/j.bbih.2023.100653] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 06/06/2023] [Accepted: 06/11/2023] [Indexed: 07/08/2023] Open
Abstract
Purpose Blood-brain barrier (BBB) dysregulation and pro-inflammatory signalling molecules are secondary factors that have been associated with injury severity and long-term clinical outcome following traumatic brain injury (TBI). However, the association between BBB permeability and inflammation is unknown in human TBI patients. In this study, we investigated whether BBI integrity as measured by Dynamic Contrast-Enhanced (DCE) Magnetic Resonance Imaging (MRI) correlates with plasma levels of immunological markers following TBI. Methods Thirty-two TBI patients recruited from a neurosurgical unit were included in the study. Structural three-dimensional T1-weighted and DCE-MRI images were acquired on a 3T MRI at the earliest opportunity once the participant was sufficiently stable after patient admission to hospital. Blood sampling was performed on the same day as the MRI. The location and extents of the haemorrhagic and contusional lesions were identified. Immunological biomarkers were quantified from the participants' plasma using a multiplex immunoassay. Demographic and clinical information, including age and Glasgow Coma Scale (GCS) were also collected and the immunological biomarker profiles were compared across controls and the TBI severity sub-groups. Contrast agent leakiness through blood-brain barriers (BBB) in the contusional lesions were assessed by fitting DCE-MRI using Patlak model and BBB leakiness characteristics of the participants were correlated with the immunological biomarker profiles. Results TBI patients showed reduced plasma levels of interleukin (IL)-1β, IFN-γ, IL-13, and chemokine (C-C motif) ligands (CCL)2 compared to controls and significantly higher levels of platelet-derived growth factor (PDGF-BB), IL-6, and IL-8. BBB leakiness of the contusional lesions did not significantly differ across different TBI severity sub-groups. IL-1ra levels significantly and positively correlated with the contusional lesion's BBB integrity as measured with DCE-MRI via an exponential curve relationship. Discussion This is the first study to combine DCE-MRI with plasma markers of inflammation in acute TBI patients. Our finding that plasma levels of the anti-inflammatory cytokine IL-1ra correlated negatively with increased leakiness of the BBB.
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Affiliation(s)
- Xuan Vinh To
- Queensland Brain Institute, The University of Queensland, Brisbane, Australia
| | - Patrick Donnelly
- Department of Neurosurgery, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Liam Maclachlan
- Department of Neurosurgery, Royal Brisbane and Women's Hospital, Brisbane, Australia
- School of Health and Rehabilitation Sciences, The University of Queensland, Brisbane, Australia
| | - Kate Mahady
- Department of Radiology, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | | | - Paul Cumming
- Department of Nuclear Medicine, Bern University Hospital, Bern, Switzerland
- School of Psychology and Counselling, Queensland University of Technology, Brisbane, Australia
| | - Craig Winter
- Department of Neurosurgery, Royal Brisbane and Women's Hospital, Brisbane, Australia
- Faculty of Medicine, University of Queensland, Brisbane, Australia
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Australia
| | - Fatima Nasrallah
- Department of Neurosurgery, Royal Brisbane and Women's Hospital, Brisbane, Australia
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Abstract
Pericytes are specialized cells located in close proximity to endothelial cells within the microvasculature. They play a crucial role in regulating blood flow, stabilizing vessel walls, and maintaining the integrity of the blood-brain barrier. The loss of pericytes has been associated with the development and progression of various diseases, such as diabetes, Alzheimer's disease, sepsis, stroke, and traumatic brain injury. This review examines the detection of pericyte loss in different diseases, explores the methods employed to assess pericyte coverage, and elucidates the potential mechanisms contributing to pericyte loss in these pathological conditions. Additionally, current therapeutic strategies targeting pericytes are discussed, along with potential future interventions aimed at preserving pericyte function and promoting disease mitigation.
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Affiliation(s)
| | - Hongkuan Fan
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29425, USA;
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34
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Rosen G, Kirsch D, Horowitz S, Cherry JD, Nicks R, Kelley H, Uretsky M, Dell'Aquila K, Mathias R, Cormier KA, Kubilus CA, Mez J, Tripodis Y, Stein TD, Alvarez VE, Alosco ML, McKee AC, Huber BR. Three dimensional evaluation of cerebrovascular density and branching in chronic traumatic encephalopathy. Acta Neuropathol Commun 2023; 11:123. [PMID: 37491342 PMCID: PMC10369801 DOI: 10.1186/s40478-023-01612-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 06/28/2023] [Indexed: 07/27/2023] Open
Abstract
Chronic traumatic encephalopathy (CTE) is a neurodegenerative disease associated with exposure to repetitive head impacts (RHI) and characterized by perivascular accumulations of hyperphosphorylated tau protein (p-tau) at the depths of the cortical sulci. Studies of living athletes exposed to RHI, including concussive and nonconcussive impacts, have shown increased blood-brain barrier permeability, reduced cerebral blood flow, and alterations in vasoreactivity. Blood-brain barrier abnormalities have also been reported in individuals neuropathologically diagnosed with CTE. To further investigate the three-dimensional microvascular changes in individuals diagnosed with CTE and controls, we used SHIELD tissue processing and passive delipidation to optically clear and label blocks of postmortem human dorsolateral frontal cortex. We used fluorescent confocal microscopy to quantitate vascular branch density and fraction volume. We compared the findings in 41 male brain donors, age at death 31-89 years, mean age 64 years, including 12 donors with low CTE (McKee stage I-II), 13 with high CTE (McKee stage III-IV) to 16 age- and sex-matched non-CTE controls (7 with RHI exposure and 9 with no RHI exposure). The density of vessel branches in the gray matter sulcus was significantly greater in CTE cases than in controls. The ratios of sulcus versus gyrus vessel branch density and fraction volume were also greater in CTE than in controls and significantly above one for the CTE group. Hyperphosphorylated tau pathology density correlated with gray matter sulcus fraction volume. These findings point towards increased vascular coverage and branching in the dorsolateral frontal cortex (DLF) sulci in CTE, that correlates with p-tau pathology.
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Affiliation(s)
- Grace Rosen
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- National Center for PTSD, US Department of Veterans Affairs, Boston, MA, USA
| | - Daniel Kirsch
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
| | - Sarah Horowitz
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- National Center for PTSD, US Department of Veterans Affairs, Boston, MA, USA
| | - Jonathan D Cherry
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Raymond Nicks
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Hunter Kelley
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Madeline Uretsky
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Kevin Dell'Aquila
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Rebecca Mathias
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
| | - Kerry A Cormier
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
- VA Bedford Healthcare System, US Department of Veterans Affairs, Bedford, MA, USA
| | - Caroline A Kubilus
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
- VA Bedford Healthcare System, US Department of Veterans Affairs, Bedford, MA, USA
| | - Jesse Mez
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Yorghos Tripodis
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
- Department of Biostatistics, Boston University School of Public Health, Boston, USA
| | - Thor D Stein
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Victor E Alvarez
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Michael L Alosco
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
| | - Ann C McKee
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA
- Department of Pathology and Laboratory Medicine, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA
- VA Bedford Healthcare System, US Department of Veterans Affairs, Bedford, MA, USA
| | - Bertrand R Huber
- VA Boston Healthcare System, US Department of Veterans Affairs, 150 S Huntington Avenue, Boston, MA, 02130, USA.
- Department of Neurology, Boston University Chobanian & Avedisian School of Medicine, Boston, USA.
- Boston University Alzheimer's Disease Research Center and Boston University CTE Center, Boston, USA.
- National Center for PTSD, US Department of Veterans Affairs, Boston, MA, USA.
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Mu Y, Wei D, Yao L, Xu X, Li S, Cao R, Chen T, Zhang Z. Choroidal circulation disturbance is an initial factor in outer retinal degeneration in rats under simulated weightlessness. Front Physiol 2023; 14:1198862. [PMID: 37546536 PMCID: PMC10397408 DOI: 10.3389/fphys.2023.1198862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 07/07/2023] [Indexed: 08/08/2023] Open
Abstract
Objective: Microgravity contributes to ocular injury yet the underlying mechanism remains unclear. This study aims to elucidate the mechanism behind choroidal circulation disorder and outer retinal degeneration in rats with simulated weightlessness. Methods: Optical coherence tomography angiography (OCTA) was used to evaluate choroidal circulation and retinal morphological alterations in rats with weightlessness simulation. Electroretinogram and transmission electron microscopy were used to examine the ultrastructure and function of the choroid and outer retina. Furthermore, histological and terminal deoxynucleotidyl transferase deoxyuridine dUTP nick-end labeling (TUNEL) staining was used to monitor retinal morphology. Western blotting was performed to analyze the expressions of blood-retinal outer barrier function-related proteins (Cx43, ZO-1, and occludin). Results: The choroidal thickening was observed from the fourth week of simulated weightlessness (p < 0.05), and choroidal capillary density started to decline by the fifth week (p < 0.05). Transmission electron microscopy revealed that the choroidal vessels were open and operating well by the fourth week. However, most of the mitochondria within the vascular endothelium underwent mild swelling, and by the fifth week, the choroidal vessels had various degrees of erythrocyte aggregation, mitochondrial swelling, and apoptosis. Additionally, ERG demonstrated a decline in retinal function beginning in the fifth week (p < 0.05). TUNEL staining revealed a significantly higher apoptotic index in the outer nuclear layer of the retina (p < 0.05). At the sixth week weeks of simulated weightlessness, OCTA and hematoxylin and eosin (HE) staining of retinal sections revealed that the outer nuclear layer of the retina started to become thin (p < 0.05). Results from western blotting revealed that Cx43, ZO-1, and occludin exhibited decreased expression (p < 0.05). Conclusion: Based on our findings in a rat model of simulated weightlessness, choroidal circulation disturbance induced by choroidal congestion is the initial cause of outer retinal degeneration. Blood-retinal barrier disruption is significant in this process.
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Affiliation(s)
- Yuxue Mu
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
- Department of Aviation Medicine, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Dongyu Wei
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
| | - Lilingxuan Yao
- The Third Regiment, School of Basic Medicine, Air Force Medical University, Xi’an, China
| | - Xinyue Xu
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
| | - Shaoheng Li
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
| | - Ruidan Cao
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
- Department of Aviation Medicine, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Tao Chen
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
- Department of Aviation Medicine, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Zuoming Zhang
- Aerospace Clinical Medical Center, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
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36
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Bhowmick S, Rani MRP, Singh S, Abdul-Muneer PM. Discovery of novel microRNAs and their pathogenic responsive target genes in mild traumatic brain injury. Exp Brain Res 2023:10.1007/s00221-023-06672-z. [PMID: 37466694 DOI: 10.1007/s00221-023-06672-z] [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: 01/14/2023] [Accepted: 07/12/2023] [Indexed: 07/20/2023]
Abstract
MicroRNAs (miRNAs) are non-coding RNA molecules that function in RNA silencing and post-transcriptional regulation of gene expression. They are profound mediators of molecular and cellular changes in several pathophysiological conditions. Since miRNAs play major roles in regulating gene expression after traumatic brain injury (TBI), their possible role in diagnosis, prognosis, and therapy is not much explored. In this study, we aimed to identify specific miRNAs that are involved in the pathophysiological conditions in the first 24 h after mild TBI (mTBI). The genome-wide expression of miRNAs was evaluated by applying RNA sequence in the injury area of the cerebral cortex 24 after inflicting the injury using a mouse model of mild fluid percussion injury (FPI; 10 psi). Here, we identified different annotated, conserved, and novel miRNAs. A total of 978 miRNAs after 24 h of TBI were identified, and among these, 906 miRNAs were differentially expressed between control and mTBI groups. In this study, 146 miRNAs were identified as novel to mTBI and among them, 21 miRNAs were significant (p < 0.05). Using q-RT-PCR, we validated 10 differentially and significantly expressed novel miRNAs. Further, we filtered the differentially expressed miRNAs that were linked with proinflammatory cytokines, apoptosis, matrix metalloproteinases (MMPs), and tight junction and junctional adhesion molecule genes. Overall, this work shows that mTBI induces widespread changes in the expression of miRNAs that may underlie the progression of the TBI pathophysiology. The detection of several novel TBI-responsive miRNAs and their solid link with pathophysiological genes may help in identifying novel therapeutic targets.
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Affiliation(s)
- Saurav Bhowmick
- Laboratory of CNS Injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, 65 James St, Edison, NJ, 08820, USA
| | - M R Preetha Rani
- Laboratory of CNS Injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, 65 James St, Edison, NJ, 08820, USA
| | - Shubham Singh
- Laboratory of CNS Injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, 65 James St, Edison, NJ, 08820, USA
| | - P M Abdul-Muneer
- Laboratory of CNS Injury and Molecular Therapy, JFK Neuroscience Institute, Hackensack Meridian Health JFK University Medical Center, 65 James St, Edison, NJ, 08820, USA.
- Department of Neurology, Hackensack Meridian School of Medicine, Nutley, NJ, 07110, USA.
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37
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Kanal HD, Levison SW. Neuroprotective Effects of Delayed TGF-β1 Receptor Antagonist Administration on Perinatal Hypoxic-Ischemic Brain Injury. Dev Neurosci 2023; 46:188-200. [PMID: 37348472 DOI: 10.1159/000531650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 06/19/2023] [Indexed: 06/24/2023] Open
Abstract
Hypoxic-ischemic (HI) brain injury in neonatal encephalopathy triggers a wave of neuroinflammatory events attributed to causing the progressive degeneration and functional deficits seen weeks after the primary damage. The cellular processes mediating this prolonged neurodegeneration in HI injury are not sufficiently understood. Consequently, current therapies are not fully protective. In a recent study, we found significant improvements in neurologic outcomes when a small molecule antagonist for activin-like kinase 5 (ALK5), a transforming growth factor beta (TGF-β) receptor was used as a therapeutic in a rat model of moderate term HI. Here, we have extended those studies to a mouse preterm pup model of HI. For these studies, postnatal day 7 CD1 mice of both sexes were exposed to 35-40 min of HI. Beginning 3 days later, SB505124, the ALK5 receptor antagonist, was administered systemically through intraperitoneal injections performed every 12 h for 5 days. When evaluated 23 days later, SB505124-treated mice had ∼2.5-fold more hippocampal area and ∼2-fold more thalamic tissue. Approximately 90% of the ipsilateral hemisphere (ILH) was preserved in the SB505124-treated HI mice compared to the vehicle-treated HI mice, where the ILH was ∼60% of its normal size. SB505124 also preserved the subcortical white matter. SB505124 treatment preserved levels of aquaporin-4 and n-cadherin, key proteins associated with blood-brain barrier function. Importantly, SB505124 administration improved sensorimotor function as assessed by a battery of behavioral tests. Altogether, these data lend additional support to the conclusion that SB505124 is a candidate neuroprotective molecule that could be an effective treatment for HI-related encephalopathy in moderately injured preterm infants.
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Affiliation(s)
- Hur Dolunay Kanal
- Department of Pharmacology, Physiology and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Steven W Levison
- Department of Pharmacology, Physiology and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
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38
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Tran NB, Lee H, Lee SJ. Extracts from the edible insects Gryllus bimaculatus and Oxya chinensis sinuosa as an effective postnatal therapy for improving autistic behavior through blood-brain barrier control and gut microbiota. J Funct Foods 2023. [DOI: 10.1016/j.jff.2023.105516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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39
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Wang Z, Chen G. Immune regulation in neurovascular units after traumatic brain injury. Neurobiol Dis 2023; 179:106060. [PMID: 36871640 DOI: 10.1016/j.nbd.2023.106060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/19/2023] [Accepted: 02/28/2023] [Indexed: 03/07/2023] Open
Abstract
Traumatic brain injury (TBI) is a major cause of death and disability worldwide. Survivors may experience movement disorders, memory loss, and cognitive deficits. However, there is a lack of understanding of the pathophysiology of TBI-mediated neuroinflammation and neurodegeneration. The immune regulation process of TBI involves changes in the peripheral and central nervous system (CNS) immunity, and intracranial blood vessels are essential communication centers. The neurovascular unit (NVU) is responsible for coupling blood flow with brain activity, and comprises endothelial cells, pericytes, astrocyte end-feet, and vast regulatory nerve terminals. A stable NVU is the basis for normal brain function. The concept of the NVU emphasizes that cell-cell interactions between different types of cells are essential for maintaining brain homeostasis. Previous studies have explored the effects of immune system changes after TBI. The NVU can help us further understand the immune regulation process. Herein, we enumerate the paradoxes of primary immune activation and chronic immunosuppression. We describe the changes in immune cells, cytokines/chemokines, and neuroinflammation after TBI. The post-immunomodulatory changes in NVU components are discussed, and research exploring immune changes in the NVU pattern is also described. Finally, we summarize immune regulation therapies and drugs after TBI. Therapies and drugs that focus on immune regulation have shown great potential for neuroprotection. These findings will help us further understand the pathological processes after TBI.
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Affiliation(s)
- Zongqi Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province 215006, China; Institute of Stroke Research, Soochow University, Suzhou, Jiangsu Province 215006, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, Jiangsu Province 215006, China; Institute of Stroke Research, Soochow University, Suzhou, Jiangsu Province 215006, China.
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40
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Whitehead B, Velazquez-Cruz R, Albowaidey A, Zhang N, Karelina K, Weil ZM. Mild Traumatic Brain Injury Induces Time- and Sex-Dependent Cerebrovascular Dysfunction and Stroke Vulnerability. J Neurotrauma 2023; 40:578-591. [PMID: 36322789 PMCID: PMC9986031 DOI: 10.1089/neu.2022.0335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Mild traumatic brain injury (mTBI) produces subtle cerebrovascular impairments that persist over time and promote increased ischemic stroke vulnerability. We recently established a role for vascular impairments in exacerbating stroke outcomes 1 week after TBI, but there is a lack of research regarding long-term impacts of mTBI-induced vascular dysfunction, as well as a significant need to understand how mTBI promotes stroke vulnerability in both males and females. Here, we present data using a mild closed head TBI model and an experimental stroke occurring either 7 or 28 days later in both male and female mice. We report that mTBI induces larger stroke volumes 7 days after injury, however, this increased vulnerability to stroke persists out to 28 days in female but not male mice. Importantly, mTBI-induced changes in blood-brain barrier permeability, intravascular coagulation, angiogenic factors, total vascular area, and glial expression were differentially altered across time and by sex. Taken together, these data suggest that mTBI can result in persistent cerebrovascular dysfunction and increased susceptibility to worsened ischemic outcomes, although these dysfunctions occur differently in male and female mice.
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Affiliation(s)
- Bailey Whitehead
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Ruth Velazquez-Cruz
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Ali Albowaidey
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Ning Zhang
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Kate Karelina
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
| | - Zachary M. Weil
- Department of Neuroscience and Rockefeller Neuroscience Institute, West Virginia University, Morgantown, West Virginia, USA
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41
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Yao F, Luo Y, Chen Y, Li Y, Hu X, You X, Li Z, Yu S, Tian D, Zheng M, Cheng L, Jing J. Myelin Debris Impairs Tight Junctions and Promotes the Migration of Microvascular Endothelial Cells in the Injured Spinal Cord. Cell Mol Neurobiol 2023; 43:741-756. [PMID: 35147836 DOI: 10.1007/s10571-022-01203-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 01/31/2022] [Indexed: 01/08/2023]
Abstract
Clearance of myelin debris caused by acute demyelination is an essential process for functional restoration following spinal cord injury (SCI). Microvascular endothelial cells, acting as "amateur" phagocytes, have been confirmed to engulf and degrade myelin debris, promoting the inflammatory response, robust angiogenesis, and persistent fibrosis. However, the effect of myelin debris engulfment on the function of endothelial tight junctions (TJs) remains unclear. Here, we demonstrate that myelin debris uptake impairs TJs and gap junctions of endothelial cells in the lesion core of the injured spinal cord and in vitro, resulting in increased permeability and leakage. We further show that myelin debris acts as an inducer to regulate the endothelial-to-mesenchymal transition in a dose-dependent manner and promotes endothelial cell migration through the PI3K/AKT and ERK signaling pathways. Together, our results indicate that myelin debris engulfment impairs TJs and promotes the migration of endothelial cells. Accelerating myelin debris clearance may help maintain blood-spinal cord barrier integrity, thus facilitating restoration of motor and sensory function following SCI.
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Affiliation(s)
- Fei Yao
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Yang Luo
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Yihao Chen
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Yiteng Li
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Xuyang Hu
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Xingyu You
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Ziyu Li
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Shuisheng Yu
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Dasheng Tian
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China
| | - Meige Zheng
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China.
| | - Li Cheng
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China.
- School of Pharmacy, Anhui Medical University, Hefei, 230032, Anhui Province, China.
| | - Juehua Jing
- Department of Orthopedics, The Second Affiliated Hospital of Anhui Medical University, Anhui Medical University, Hefei, 230032, China.
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42
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Mfsd2a attenuated hypoxic-ischemic brain damage via protection of the blood-brain barrier in mfat-1 transgenic mice. Cell Mol Life Sci 2023; 80:71. [PMID: 36820986 PMCID: PMC9950179 DOI: 10.1007/s00018-023-04716-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/10/2023] [Accepted: 02/01/2023] [Indexed: 02/24/2023]
Abstract
Previous studies have shown that mfat-1 transgenic mice have protective effects against some central nervous system (CNS) disorders, owing to the high docosahexaenoic acid (DHA) content enriched in their brains. However, whether this protective effect is connected to the blood-brain barrier (BBB) remains unclear. This study aims to investigate the mechanisms of the protective effect against hypoxic-ischemic brain damage (HIBD) of mfat-1 transgenic mice. mfat-1 mice not only demonstrated a significant amelioration of neurological dysfunction and neuronal damage but also partly maintained the physiological permeability of the BBB after HIBD. We initially showed this was associated with elevated major facilitator superfamily domain-containing 2a (Mfsd2a) expression on the BBB, resulting from more lysophosphatidylcholine (LPC)-DHA entering the brain. Wild-type (WT) mice showed a similar Mfsd2a expression trend after long-term feeding with an LPC-DHA-rich diet. Knockdown of Mfsd2a by siRNA intra-cerebroventricular (ICV) injection neutralized the protective effect against HIBD-induced BBB disruption in mfat-1 mice, further validating the protective function of Mfsd2a on BBB. HIBD-induced BBB high permeability was attenuated by Mfsd2a, primarily through a transcellular pathway to decrease caveolae-like vesicle-mediated transcytosis. Taken together, these findings not only reveal that mfat-1 transgenic mice have higher expression of Mfsd2a on the BBB, which partly sustains BBB permeability via vesicular transcytosis to alleviate the severity of HIBD, but also suggest that dietary intake of LPC-DHA may upregulate Mfsd2a expression as a novel therapeutic strategy for BBB dysfunction and survival in HIBD patients.
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43
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Jiang H, Zhang Y, Wang ZZ, Chen NH. Connexin 43: An Interface Connecting Neuroinflammation to Depression. Molecules 2023; 28:molecules28041820. [PMID: 36838809 PMCID: PMC9961786 DOI: 10.3390/molecules28041820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023] Open
Abstract
Major depressive disorder (MDD) is a leading chronic mental illness worldwide, characterized by anhedonia, pessimism and even suicidal thoughts. Connexin 43 (Cx43), mainly distributed in astrocytes of the brain, is by far the most widely and ubiquitously expressed connexin in almost all vital organs. Cx43 forms gap junction channels in the brain, which mediate energy exchange and effectively maintain physiological homeostasis. Increasing evidence suggests the crucial role of Cx43 in the pathogenesis of MDD. Neuroinflammation is one of the most common pathological features of the central nervous system dysfunctions. Inflammatory factors are abnormally elevated in patients with depression and are closely related to nearly all links of depression. After activating the inflammatory pathway in the brain, the release and uptake of glutamate and adenosine triphosphate, through Cx43 in the synaptic cleft, would be affected. In this review, we have summarized the association between Cx43 and neuroinflammation, the cornerstones linking inflammation and depression, and Cx43 abnormalities in depression. We also discuss the significant association of Cx43 in inflammation and depression, which will help to explore new antidepressant drug targets.
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Affiliation(s)
- Hong Jiang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical, Science and Peking Union Medical College, Beijing 100050, China
| | - Yi Zhang
- Department of Anatomy, School of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Zhen-Zhen Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical, Science and Peking Union Medical College, Beijing 100050, China
- Correspondence: (Z.-Z.W.); (N.-H.C.); Tel.: +86-10-6316-5182 (Z.-Z.W.); +86-10-63165177 (N.-H.C.)
| | - Nai-Hong Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica & Neuroscience Center, Chinese Academy of Medical, Science and Peking Union Medical College, Beijing 100050, China
- Correspondence: (Z.-Z.W.); (N.-H.C.); Tel.: +86-10-6316-5182 (Z.-Z.W.); +86-10-63165177 (N.-H.C.)
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44
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Sheikh MA, O'Connell KS, Lekva T, Szabo A, Akkouh IA, Osete JR, Agartz I, Engh JA, Andreou D, Boye B, Bøen E, Elvsåshagen T, Hope S, Frogner Werner MC, Joa I, Johnsen E, Kroken RA, Lagerberg TV, Melle I, Drange OK, Morken G, Nærland T, Sørensen K, Vaaler AE, Weibell MA, Westlye LT, Aukrust P, Djurovic S, Steen NE, Andreassen OA, Ueland T. Systemic Cell Adhesion Molecules in Severe Mental Illness: Potential Role of Intercellular CAM-1 in Linking Peripheral and Neuroinflammation. Biol Psychiatry 2023; 93:187-196. [PMID: 36182530 DOI: 10.1016/j.biopsych.2022.06.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 06/14/2022] [Accepted: 06/14/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Cell adhesion molecules (CAMs) orchestrate leukocyte trafficking and could link peripheral and neuroinflammation in patients with severe mental illness (SMI), by promoting inflammatory and immune-mediated responses and mediating signals across blood-brain barrier. We hypothesized that CAMs would be dysregulated in SMI and evaluated plasma levels of different vascular and neural CAMs. Dysregulated CAMs in plasma were further evaluated in vivo in leukocytes and brain tissue and in vitro in induced pluripotent stem cells. METHODS We compared plasma soluble levels of different vascular (VCAM-1, ICAM-1, P-SEL) and neural (JAM-A, NCAD) CAMs in circulating leukocytes in a large SMI sample of schizophrenia (SCZ) spectrum disorder (n = 895) and affective disorder (n = 737) and healthy control participants (n = 1070) controlling for age, sex, body mass index, C-reactive protein, and freezer storage time. We also evaluated messenger RNA expression of ICAM1 and related genes encoding ICAM-1 receptors in leukocytes using microarray (n = 842) and in available RNA sequencing data from the CommonMind Consortium (CMC) in postmortem samples from the dorsolateral prefrontal cortex (n = 474). The regulation of soluble ICAM-1 in induced pluripotent stem cell-derived neurons and astrocytes was assessed in patients with SCZ and healthy control participants (n = 8 of each). RESULTS Our major findings were 1) increased soluble ICAM-1 in patients with SMI compared with healthy control participants; 2) increased ITGB2 messenger RNA, encoding the beta chain of the ICAM-1 receptor, in circulating leukocytes from patients with SMI and increased prefrontal cortex messenger RNA expression of ICAM1 in SCZ; and 3) enhanced soluble ICAM-1 release in induced pluripotent stem cell-derived neurons from patients with SCZ. CONCLUSIONS Our results support a systemic and cerebral dysregulation of soluble ICAM-1 expression in SMI and especially in patients with SCZ.
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Affiliation(s)
- Mashhood A Sheikh
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Kevin S O'Connell
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Tove Lekva
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Attila Szabo
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Ibrahim A Akkouh
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Jordi Requena Osete
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Ingrid Agartz
- NORMENT, University of Oslo, Oslo, Norway; Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway; Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - John A Engh
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; Vestfold Hospital Trust, Division of Mental Health and Addiction, Tønsberg, Norway
| | - Dimitrios Andreou
- NORMENT, University of Oslo, Oslo, Norway; Department of Psychiatric Research, Diakonhjemmet Hospital, Oslo, Norway; Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | | | | | - Torbjørn Elvsåshagen
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Sigrun Hope
- Department of Neuro Habilitation, Oslo University Hospital Ullevål, Oslo, Norway
| | - Maren Caroline Frogner Werner
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Inge Joa
- Network for Clinical Psychosis Research, Division of Psychiatry, Stavanger University Hospital, Stavanger, Norway; Network for Medical Sciences, Faculty of Health, University of Stavanger, Stavanger, Norway
| | - Erik Johnsen
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway; NORMENT Centre of Excellence, Bergen, Norway
| | - Rune A Kroken
- Division of Psychiatry, Haukeland University Hospital, Bergen, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway; NORMENT Centre of Excellence, Bergen, Norway
| | - Trine Vik Lagerberg
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Ingrid Melle
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; NORMENT, University of Oslo, Oslo, Norway
| | - Ole Kristian Drange
- Department of Mental Health, Norwegian University of Science and Technology, Trondheim, Norway; Department of Østmarka, Division of Mental Health, St. Olavs University Hospital, Trondheim, Norway; Department of Psychiatry, Sørlandet Hospital HF, Kristiansand, Norway
| | - Gunnar Morken
- Department of Mental Health, Norwegian University of Science and Technology, Trondheim, Norway
| | | | - Kjetil Sørensen
- Department of Mental Health, Norwegian University of Science and Technology, Trondheim, Norway
| | - Arne E Vaaler
- Department of Mental Health, Norwegian University of Science and Technology, Trondheim, Norway; Department of Østmarka, Division of Mental Health, St. Olavs University Hospital, Trondheim, Norway
| | - Melissa Authen Weibell
- Network for Clinical Psychosis Research, Division of Psychiatry, Stavanger University Hospital, Stavanger, Norway; Network for Medical Sciences, Faculty of Health, University of Stavanger, Stavanger, Norway
| | - Lars T Westlye
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Pål Aukrust
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway; Section of Clinical Immunology and Infectious Diseases, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Srdjan Djurovic
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; Department of Medical Genetics, Oslo University Hospital, Oslo, Norway; K.G. Jebsen Center for Neurodevelopmental Disorders, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Nils Eiel Steen
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; NORMENT, University of Oslo, Oslo, Norway
| | - Ole A Andreassen
- Norwegian Centre for Mental Disorders Research (NORMENT), Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway; NORMENT, University of Oslo, Oslo, Norway
| | - Thor Ueland
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway; Faculty of Medicine, University of Oslo, Oslo, Norway; K.G. Jebsen Thrombosis Research and Expertise Center, University of Tromsø, Tromsø, Norway.
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Mani S, Dubey R, Lai IC, Babu MA, Tyagi S, Swargiary G, Mody D, Singh M, Agarwal S, Iqbal D, Kumar S, Hamed M, Sachdeva P, Almutary AG, Albadrani HM, Ojha S, Singh SK, Jha NK. Oxidative Stress and Natural Antioxidants: Back and Forth in the Neurological Mechanisms of Alzheimer's Disease. J Alzheimers Dis 2023; 96:877-912. [PMID: 37927255 DOI: 10.3233/jad-220700] [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] [Indexed: 11/07/2023]
Abstract
Alzheimer's disease (AD) is characterized by the progressive degeneration of neuronal cells. With the increase in aged population, there is a prevalence of irreversible neurodegenerative changes, causing a significant mental, social, and economic burden globally. The factors contributing to AD are multidimensional, highly complex, and not completely understood. However, it is widely known that aging, neuroinflammation, and excessive production of reactive oxygen species (ROS), along with other free radicals, substantially contribute to oxidative stress and cell death, which are inextricably linked. While oxidative stress is undeniably important in AD, limiting free radicals and ROS levels is an intriguing and potential strategy for deferring the process of neurodegeneration and alleviating associated symptoms. Therapeutic compounds from natural sources have recently become increasingly accepted and have been effectively studied for AD treatment. These phytocompounds are widely available and a multitude of holistic therapeutic efficiencies for treating AD owing to their antioxidant, anti-inflammatory, and biological activities. Some of these compounds also function by stimulating cholinergic neurotransmission, facilitating the suppression of beta-site amyloid precursor protein-cleaving enzyme 1, α-synuclein, and monoamine oxidase proteins, and deterring the occurrence of AD. Additionally, various phenolic, flavonoid, and terpenoid phytocompounds have been extensively described as potential palliative agents for AD progression. Preclinical studies have shown their involvement in modulating the cellular redox balance and minimizing ROS formation, displaying them as antioxidant agents with neuroprotective abilities. This review emphasizes the mechanistic role of natural products in the treatment of AD and discusses the various pathological hypotheses proposed for AD.
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Affiliation(s)
- Shalini Mani
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, UP, India
| | - Rajni Dubey
- Division of Cardiology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - I-Chun Lai
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Division of Radiation Oncology, Department of Oncology, Taipei Veterans General Hospital, Taipei, Taiwan
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei, Taiwan
| | - M Arockia Babu
- Institute of Pharmaceutical Research, GLA University, Mathura, India
| | - Sakshi Tyagi
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, UP, India
| | - Geeta Swargiary
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, UP, India
| | - Deepansh Mody
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, UP, India
| | - Manisha Singh
- Centre for Emerging Diseases, Department of Biotechnology, Jaypee Institute of Information Technology, Noida, UP, India
| | - Shriya Agarwal
- Department of Molecular Sciences, Macquarie University, Sydney, Australia
| | - Danish Iqbal
- Department of Health Information Management, College of Applied Medical Sciences, Buraydah Private Colleges, Buraydah, Saudi Arabia
| | - Sanjay Kumar
- Department of Life Sciences, School of Basic Sciences and Research (SBSR), Sharda University, Greater Noida, Uttar Pradesh, India
| | - Munerah Hamed
- Department of Pathology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
| | | | - Abdulmajeed G Almutary
- Department of Biomedical Sciences, College of Health Sciences, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Hind Muteb Albadrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Eastern Province, Kingdom of Saudi Arabia
| | - Shreesh Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | | | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering & Technology (SET), Sharda University, Greater Noida, Uttar Pradesh, India
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, Punjab, India
- Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun, Uttarakhand, India
- Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, India
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46
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Liu Y, Chang D, Liu T, Zhou X. Natural product-based bioactive agents in combination attenuate neuroinflammation in a tri-culture model. Front Pharmacol 2023; 14:1135934. [PMID: 36873986 PMCID: PMC9979791 DOI: 10.3389/fphar.2023.1135934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 01/31/2023] [Indexed: 02/17/2023] Open
Abstract
Introduction: Neuroinflammation is an important pathological event contributing to the onset and progression of neurodegenerative diseases. The hyperactivation of microglia triggers the release of excessive proinflammatory mediators that lead to the leaky blood-brain barrier and impaired neuronal survival. Andrographolide (AN), baicalein (BA) and 6-shogaol (6-SG) possess anti-neuroinflammatory properties through diverse mechanisms of action. The present study aims to investigate the effects of the pair-combinations of these bioactive compounds in attenuating neuroinflammation. Methods: A tri-culture model with microglial N11 cells, microvascular endothelial MVEC(B3) cells, and neuroblastoma N2A cells was established in a transwell system. AN, BA and 6-SG used alone (25 µM) or in pair-wised combinations (12.5 + 12.5 µM) were subjected to the tri-culture system. Upon the stimulation of lipopolysaccharides (LPS) at 1 μg/mL, tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6) levels were determined by ELISA assays. Immunofluorescence staining was applied to investigate the nuclear translocation of nuclear factor kappa B p65 (NF-κB p65) on N11 cells, expressions of protein zonula occludens-1 (ZO-1) on MVEC cells and phosphorylated tau (p-tau) on N2A cells, respectively. The endothelial barrier permeability of MVEC cells was assessed by the Evans blue dye, and the resistance from the endothelial barrier was measured by transepithelial/endothelial electrical resistance (TEER) value. Neuronal survival of N2A cells was determined by Alamar blue and MTT assays. Results: Combinations of AN-SG and BA-SG synergistically lowered the TNF and IL-6 levels in LPS-induced N11 cells. Remarkably, the combined anti-neuroinflammatory effects of AN-SG and BA-SG remained significantly greater compared to their individual components at the same concentration level. The molecular mechanism of the attenuated neuroinflammation was likely to be mediated by downregulation of NF-κB p65 translocation (p < 0.0001 vs. LPS stimulation) in N11 cells. In the MVEC cells, both AN-SG and BA-SG restored TEER values, ZO-1 expression and reduced permeability. Furthermore, AN-SG and BA-SG significantly improved neuronal survival and reduced expressions of p-tau on N2A cells. Discussion: The AN-SG and BA-SG combinations showed greater anti-neuroinflammatory potential than those used alone in mono- and tri-cultured N11 cells, thereby further protecting endothelial tight junction and neuronal survival. Taken together, AN-SG and BA-SG may provide improved anti-neuroinflammatory and neuroprotective activities.
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Affiliation(s)
- Yang Liu
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
| | - Tianqing Liu
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia.,School of Science, Western Sydney University, Penrith, NSW, Australia
| | - Xian Zhou
- NICM Health Research Institute, Western Sydney University, Westmead, NSW, Australia
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Mohammed FS, Omay SB, Sheth KN, Zhou J. Nanoparticle-based drug delivery for the treatment of traumatic brain injury. Expert Opin Drug Deliv 2023; 20:55-73. [PMID: 36420918 PMCID: PMC9983310 DOI: 10.1080/17425247.2023.2152001] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/10/2022] [Accepted: 11/22/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Traumatic brain injuries (TBIs) impact the breadth of society and remain without any approved pharmacological treatments. Despite successful Phase II clinical trials, the failure of many Phase III clinical trials may be explained by insufficient drug targeting and retention, preventing the proper attainment of an observable dosage threshold. To address this challenge, nanoparticles can be functionalized to protect pharmacological payloads, improve targeted drug delivery to sites of injury, and can be combined with supportive scaffolding to improve secondary outcomes. AREAS COVERED This review briefly covers the pathophysiology of TBIs and their subtypes, the current pre-clinical and clinical management strategies, explores the common models of focal, diffuse, and mixed traumatic brain injury employed in experimental animals, and surveys the existing literature on nanoparticles developed to treat TBIs. EXPERT OPINION Nanoparticles are well suited to improve secondary outcomes as their multifunctionality and customizability enhance their potential for efficient targeted delivery, payload protection, increased brain penetration, low off-target toxicity, and biocompatibility in both acute and chronic timescales.
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Affiliation(s)
- Farrah S. Mohammed
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA
| | - Sacit Bulent Omay
- Department of Neurosurgery, Yale University, New Haven, Connecticut, USA
| | - Kevin N. Sheth
- Department of Neurosurgery, Yale University, New Haven, Connecticut, USA
- Department of Neurology, Yale University, New Haven, Connecticut, USA
| | - Jiangbing Zhou
- Department of Biomedical Engineering, Yale University, New Haven, Connecticut, USA
- Department of Neurosurgery, Yale University, New Haven, Connecticut, USA
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D'Mello V, Subramaniam M, Bhalla AP, Saavedra S, Leiba O, Levison SW. Intranasal Leukemia Inhibitory Factor Attenuates Gliosis and Axonal Injury and Improves Sensorimotor Function After a Mild Pediatric Traumatic Brain Injury. Neurotrauma Rep 2023; 4:236-250. [PMID: 37095853 PMCID: PMC10122240 DOI: 10.1089/neur.2021.0075] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2023] Open
Abstract
Leukemia inhibitory factor (LIF) is a neuroprotective cytokine that is essential for appropriate glial responses, remyelination, and preservation of neuronal conductance after injury. The intranasal route for delivery of therapeutics to the central nervous system is of particular interest given that it bypasses the blood-brain barrier and peripheral clearance systems. We explored the possibility that LIF might improve neurological function when administered intranasally during the acute phase in a pediatric model of mild traumatic brain injury (mTBI). We tested two doses of LIF and evaluated behavioral outcomes. Here, we show that acute 40-ng intranasal LIF treatment twice a day for 3 days attenuates astrogliosis and microgliosis, protects against axonal damage, significantly improves sensorimotor function, and is well tolerated without detrimental effects on growth. Altogether, our studies provide pre-clinical evidence for the use of acute intranasal LIF treatment as a viable therapeutic for pediatric cases of mTBIs.
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Affiliation(s)
- Veera D'Mello
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Malini Subramaniam
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Aditya Paul Bhalla
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Sherlyn Saavedra
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Ofri Leiba
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
| | - Steven W. Levison
- Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, Newark, New Jersey, USA
- Address correspondence to: Steven W. Levison, PhD, Department of Pharmacology, Physiology, and Neuroscience, New Jersey Medical School, Rutgers University, 205 South Orange Avenue, Newark, NJ 07103, USA.
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Ramasubramanian B, Reddy VS, Chellappan V, Ramakrishna S. Emerging Materials, Wearables, and Diagnostic Advancements in Therapeutic Treatment of Brain Diseases. BIOSENSORS 2022; 12:1176. [PMID: 36551143 PMCID: PMC9775999 DOI: 10.3390/bios12121176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/07/2022] [Accepted: 12/07/2022] [Indexed: 06/17/2023]
Abstract
Among the most critical health issues, brain illnesses, such as neurodegenerative conditions and tumors, lower quality of life and have a significant economic impact. Implantable technology and nano-drug carriers have enormous promise for cerebral brain activity sensing and regulated therapeutic application in the treatment and detection of brain illnesses. Flexible materials are chosen for implantable devices because they help reduce biomechanical mismatch between the implanted device and brain tissue. Additionally, implanted biodegradable devices might lessen any autoimmune negative effects. The onerous subsequent operation for removing the implanted device is further lessened with biodegradability. This review expands on current developments in diagnostic technologies such as magnetic resonance imaging, computed tomography, mass spectroscopy, infrared spectroscopy, angiography, and electroencephalogram while providing an overview of prevalent brain diseases. As far as we are aware, there hasn't been a single review article that addresses all the prevalent brain illnesses. The reviewer also looks into the prospects for the future and offers suggestions for the direction of future developments in the treatment of brain diseases.
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Affiliation(s)
- Brindha Ramasubramanian
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, National University of Singapore, Singapore 117574, Singapore
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), #08-03, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Vundrala Sumedha Reddy
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, National University of Singapore, Singapore 117574, Singapore
| | - Vijila Chellappan
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), #08-03, 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers & Nanotechnology, National University of Singapore, Singapore 117574, Singapore
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50
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Dang Q, Wu D, Li Y, Fang L, Liu C, Wang X, Liu X, Min W. Walnut-derived peptides ameliorate d-galactose-induced memory impairments in a mouse model via inhibition of MMP-9-mediated blood–brain barrier disruption. Food Res Int 2022; 162:112029. [DOI: 10.1016/j.foodres.2022.112029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/27/2022] [Accepted: 10/03/2022] [Indexed: 11/29/2022]
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