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Ohshima M, Moriguchi T, Enmi JI, Kawashima H, Koshino K, Zeniya T, Tsuji M, Iida H. [ 123I]CLINDE SPECT as a neuroinflammation imaging approach in a rat model of stroke. Exp Neurol 2024; 378:114843. [PMID: 38823675 DOI: 10.1016/j.expneurol.2024.114843] [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: 01/22/2024] [Revised: 05/21/2024] [Accepted: 05/28/2024] [Indexed: 06/03/2024]
Abstract
Poststroke neuroinflammation exacerbates disease progression. [11C]PK11195-positron emission tomography (PET) imaging has been used to visualize neuroinflammation; however, its short half-life of 20 min limits its clinical use. [123I]CLINDE has a longer half-life (13h); therefore, [123I]CLINDE-single-photon emission computed tomography (SPECT) imaging is potentially more practical than [11C]PK11195-PET imaging in clinical settings. The objectives of this study were to 1) validate neuroinflammation imaging using [123I]CLINDE and 2) investigate the mechanisms underlying stroke in association with neuroinflammation using multimodal techniques, including magnetic resonance imaging (MRI), gas-PET, and histological analysis, in a rat model of ischemic stroke, that is, permanent middle cerebral artery occlusion (pMCAo). At 6 days post-pMCAo, [123I]CLINDE-SPECT considerably corresponded to the immunohistochemical images stained with the CD68 antibody (a marker for microglia/microphages), comparable to the level observed in [11C]PK11195-PET images. In addition, the [123I]CLINDE-SPECT images corresponded well with autoradiography images. Rats with severe infarcts, as defined by MRI, exhibited marked neuroinflammation in the peri-infarct area and less neuroinflammation in the ischemic core, accompanied by a substantial reduction in the cerebral metabolic rate of oxygen (CMRO2) in 15O-gas-PET. Rats with moderate-to-mild infarcts exhibited neuroinflammation in the ischemic core, where CMRO2 levels were mildly reduced. This study demonstrates that [123I]CLINDE-SPECT imaging is suitable for neuroinflammation imaging and that the distribution of neuroinflammation varies depending on the severity of infarction.
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Affiliation(s)
- Makiko Ohshima
- Department of Regenerative Medicine and Tissue Engineering, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Department of Neurobiology, Care Sciences & Society, Karolinska Institute, Visionsgatan 4, Solna 171 64, Sweden
| | - Tetsuaki Moriguchi
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - Jun-Ichiro Enmi
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Center for Information and Neural Networks (CiNet), Advanced ICT Research Institute, National Institute of Information and Communications Technology (NICT), 1-4 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hidekazu Kawashima
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Radioisotope Research Center, Kyoto Pharmaceutical University, 1 Misasagi-Shichono-cho, Yamashina-ku, Kyoto 607-8412, Japan
| | - Kazuhiro Koshino
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Department of Systems and Informatics, Hokkaido Information University, 59-2 Nishi-nopporo, Ebetsu, Hokkaido, Japan
| | - Tsutomu Zeniya
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Masahiro Tsuji
- Department of Regenerative Medicine and Tissue Engineering, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Department of Food and Nutrition, Kyoto Women's University, 35 Kitahiyoshi-cho, Imakumano, Higashiyama-ku, Kyoto 605-8501, Japan.
| | - Hidehiro Iida
- Department of Investigative Radiology, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan; Faculty of Medicine, University of Turku, and Turku PET Centre, Turku University Hospital, Kiinamyllynkatu 4-8, 20520 Turku, Finland
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2
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King RM, Peker A, Epshtein M, Arends JM, Brochu AB, Raskett CM, Slazas KJ, Puri AS, Arthur AS, Fiorella D, Gounis MJ, Anagnostakou V. Active drug-coated flow diverter in a preclinical model of intracranial stenting. J Neurointerv Surg 2024; 16:731-736. [PMID: 37399337 DOI: 10.1136/jnis-2023-020391] [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: 04/06/2023] [Accepted: 06/18/2023] [Indexed: 07/05/2023]
Abstract
BACKGROUND Flow diverters carry the risk of thromboembolic complications (TEC). We tested a coating with covalently bound heparin that activates antithrombin to address TEC by locally downregulating the coagulation cascade. We hypothesized that the neuroimaging evidence of TEC would be reduced by the coating. METHODS 16 dogs were implanted with overlapping flow diverters in the basilar artery, separated into two groups: heparin-coated (n=9) and uncoated (n=7). Following implantation, high-frequency optical coherence tomography (HF-OCT) was acquired to quantify acute thrombus (AT) formation on the flow diverters. MRI was performed postoperatively and repeated at 1, 2, 3, 4, and 8 weeks, consisting of T1-weighted imaging, time-0f-flight (ToF), diffusion weighted imaging (DWI), susceptibility weighted imaging (SWI), and fluid attenuated inversion recovery (FLAIR) sequences. Neurological examinations were performed throughout the 8-week duration of the study. RESULTS The mean AT volume on coated devices was lower than uncoated (0.014 vs 0.018 mm3); however, this was not significant (P=0.3). The mean number of foci of magnetic susceptibility artifacts (MSAs) on SWI was significantly different between the uncoated and coated groups at the 1-week follow-up (P<0.02), and remained statistically different throughout the duration of the study. The AT volume showed a direct linear correlation with the MSA count and 80% of the variance in the MSA could be explained by the AT volume (P<0.001). Pathological analysis showed evidence of ischemic injury at locations of MSA. CONCLUSIONS Heparin-coated flow diverters significantly reduced the number of new MSAs after 1 week follow-up, showing the potential to reduce TEC.
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Affiliation(s)
- Robert M King
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Ahmet Peker
- Radiology, Koç University Hospital, Istanbul, Turkey
| | - Mark Epshtein
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | | | - Alice B Brochu
- Research and Development, Stryker Neurovascular, Fremont, California, USA
| | - Christopher M Raskett
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Kimiko J Slazas
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Ajit S Puri
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Adam S Arthur
- Semmes-Murphey Neurologic and Spine Institute, Memphis, Tennessee, USA
- Neurosurgery, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - David Fiorella
- Department of Neurosurgery, Stony Brook University, Stony Brook, New York, USA
| | - Matthew J Gounis
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
| | - Vania Anagnostakou
- New England Center for Stroke Research, Department of Radiology, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
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Ozkara BB, Karabacak M, Margetis K, Smith W, Wintermark M, Yedavalli VS. Trends in stroke-related journals: Examination of publication patterns using topic modeling. J Stroke Cerebrovasc Dis 2024; 33:107665. [PMID: 38412931 DOI: 10.1016/j.jstrokecerebrovasdis.2024.107665] [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] [Revised: 01/15/2024] [Accepted: 02/24/2024] [Indexed: 02/29/2024] Open
Abstract
OBJECTIVES This study aims to demonstrate the capacity of natural language processing and topic modeling to manage and interpret the vast quantities of scholarly publications in the landscape of stroke research. These tools can expedite the literature review process, reveal hidden themes, and track rising research areas. MATERIALS AND METHODS Our study involved reviewing and analyzing articles published in five prestigious stroke journals, namely Stroke, International Journal of Stroke, European Stroke Journal, Translational Stroke Research, and Journal of Stroke and Cerebrovascular Diseases. The team extracted document titles, abstracts, publication years, and citation counts from the Scopus database. BERTopic was chosen as the topic modeling technique. Using linear regression models, current stroke research trends were identified. Python 3.1 was used to analyze and visualize data. RESULTS Out of the 35,779 documents collected, 26,732 were classified into 30 categories and used for analysis. "Animal Models," "Rehabilitation," and "Reperfusion Therapy" were identified as the three most prevalent topics. Linear regression models identified "Emboli," "Medullary and Cerebellar Infarcts," and "Glucose Metabolism" as trending topics, whereas "Cerebral Venous Thrombosis," "Statins," and "Intracerebral Hemorrhage" demonstrated a weaker trend. CONCLUSIONS The methodology can assist researchers, funders, and publishers by documenting the evolution and specialization of topics. The findings illustrate the significance of animal models, the expansion of rehabilitation research, and the centrality of reperfusion therapy. Limitations include a five-journal cap and a reliance on high-quality metadata.
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Affiliation(s)
- Burak Berksu Ozkara
- Department of Neuroradiology, MD Anderson Cancer Center, 1400 Pressler Street, Houston, bX, 77030, USA
| | - Mert Karabacak
- Department of Neurosurgery, Mount Sinai Health System, 1468 Madison Avenue, New York, NY, 10029, USA
| | - Konstantinos Margetis
- Department of Neurosurgery, Mount Sinai Health System, 1468 Madison Avenue, New York, NY, 10029, USA
| | - Wade Smith
- Department of Neurology, University of California San Francisco, 505 Parnassus Avenue, San Francisco, CA, 94143, USA
| | - Max Wintermark
- Department of Neuroradiology, MD Anderson Cancer Center, 1400 Pressler Street, Houston, bX, 77030, USA
| | - Vivek Srikar Yedavalli
- Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, 600 N Wolfe Street, Baltimore, MD, 21287, USA.
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Dai M, Yang J, Wang Z, Xue F, Wang Y, Hu E, Gong Y, Routledge MN, Qiao B. Aquaporins alteration revealed kidney damages in cerebral ischemia/reperfusion rats. Heliyon 2024; 10:e31532. [PMID: 38807874 PMCID: PMC11130722 DOI: 10.1016/j.heliyon.2024.e31532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 05/30/2024] Open
Abstract
Background Restoration of blood supply is a desired goal for the treatment of acute ischemic stroke. However, the restoration often leads to cerebral ischemia-reperfusion injury (CIR/I), which greatly increases the risk of non-neural organ damage. In particular, the acute kidney injury might be one of the most common complications. Aims The study aimed to understand the damage occurred and the potential molecular mechanisms. Methods The study was explored on the CIR/I rats generated by performing middle cerebral artery occlusion/reperfusion (MCAO/Reperfusion). The rats were evaluated with injury on the brains, followed by the non-neural organs including kidneys, livers, colons and stomachs. They were examined further with histopathological changes, and gene expression alterations by using RT-qPCR of ten aquaporins (Aqps) subtypes including Aqp1~Aqp9 and Aqp11. Furthermore, the Aqps expression profiles were constructed for each organ and analyzed by performing Principle Component Analysis. In addition, immunohistochemistry was explored to look at the protein expression of Aqp1, Aqp2, Aqp3 and Aqp4 in the rat kidneys. Results There was a prominent down-regulation profile in the MCAO/Reperfusion rat kidneys. The protein expression of Aqp1, Aqp2, Aqp3 and Aqp4 was decreased in the kidneys of the MCAO/Reperfusion rats. We suggested that the kidney was in the highest risk to be damaged following the CIR/I. Down-regulation of Aqp2, Aqp3 and Aqp4 was involved in the acute kidney injury induced by the CIR/I.
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Affiliation(s)
- Meng Dai
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
| | - Jinglei Yang
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
| | - Zhaoyang Wang
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
| | - Fangli Xue
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
| | - Yourui Wang
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
| | - Enjie Hu
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
| | - Yunyun Gong
- School of Medicine, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Michael N. Routledge
- School of Medicine, University of Leicester, Leicester, LE1 7RH, United Kingdom
- Jiangsu University, Sch Food & Biol Engn, Zhenjiang, 212013, PR China
| | - Boling Qiao
- Key Laboratory of Resource Biology and Modern Biotechnology in Western China, Ministry of Education, Northwest University, No. 229 TaiBai North Road, Xi'an, Shaanxi Province, 710069, PR China
- Shaanxi Traditional Chinese Medicine Innovation Engineering Technology Research Center, No. 229 Taibai North Road, Xi'an, Shaanxi Province, 710069, PR China
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5
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Michór P, Renardson L, Li S, Boltze J. [Challenges, Opportunities, and Recent Advances]. Neuroscience 2024:S0306-4522(24)00203-3. [PMID: 38763225 DOI: 10.1016/j.neuroscience.2024.05.009] [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: 11/11/2023] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/21/2024]
Abstract
Despite recent advances in acute stroke management, most patients experiencing a stroke will suffer from residual brain damage and functional impairment. Addressing those residual deficits would require neurorestoration, i.e., rebuilding brain tissue to repair the structural brain damage caused by stroke. However, there are major pathobiological, anatomical and technological hurdles making neurorestorative approaches remarkably challenging, and true neurorestoration after larger ischemic lesions could not yet be achieved. On the other hand, there has been steady advancement in our understanding of the limits of tissue regeneration in the adult mammalian brain as well as of the fundamental organization of brain tissue growth during embryo- and ontogenesis. This has been paralleled by the development of novel animal models to study stroke, advancement of biomaterials that can be used to support neurorestoration, and in stem cell technologies. This review gives a detailed explanation of the major hurdles so far preventing the achievement of neurorestoration after stroke. It will also describe novel concepts and advancements in biomaterial science, brain organoid culturing, and animal modeling that may enable the investigation of post-stroke neurorestorative approaches in translationally relevant setups. Finally, there will be a review of recent achievements in experimental studies that have the potential to be the starting point of research and development activities that may eventually bring post-stroke neurorestoration within reach.
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Affiliation(s)
- Paulina Michór
- University of Warwick, School of Life Sciences, Coventry CV4 7AL, United Kingdom
| | - Lydia Renardson
- University of Warwick, Warwick Medical School, Coventry CV4 7AL, United Kingdom
| | - Shen Li
- Department of Neurology and Psychiatry, Beijing Shijitan Hospital, Capital Medical University, Beijing, China; Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China
| | - Johannes Boltze
- University of Warwick, School of Life Sciences, Coventry CV4 7AL, United Kingdom.
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6
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Franx B, Dijkhuizen RM, Dippel DWJ. Acute Ischemic Stroke in the Clinic and the Laboratory: Targets for Translational Research. Neuroscience 2024:S0306-4522(24)00159-3. [PMID: 38670254 DOI: 10.1016/j.neuroscience.2024.04.006] [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: 01/03/2024] [Revised: 03/26/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024]
Abstract
Ischemic stroke research has enabled significant advancements in diagnosis, treatment, and management of this debilitating disease, yet challenges remain standing in the way of better patient prognoses. In this narrative review, a fictional case illustrates challenges and uncertainties that medical professionals still face - penumbra identification, lack of neuroprotective agents, side-effects of tissue plasminogen activator, dearth of molecular biomarkers, incomplete microvascular reperfusion or no-reflow, post-recanalization hyperperfusion, blood pressure management and procedural anesthetic effects. The current state of the field is broadly reviewed per topic, with the aim to introduce a broad audience (scientist and clinician alike) to recent successes in translational stroke research and pending scientific queries that are tractable for preclinical assessment. Opportunities for co-operation between clinical and experimental stroke experts are highlighted to increase the size and frequency of strides the field makes to improve our understanding of this disease and ways of treating it.
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Affiliation(s)
- Bart Franx
- Translational Neuroimaging Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, the Netherlands
| | - Rick M Dijkhuizen
- Translational Neuroimaging Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, the Netherlands
| | - Diederik W J Dippel
- Stroke Center, Dept of Neurology, Erasmus University Medical Center, Rotterdam, the Netherlands.
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7
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Santos E, Lopez-Navarro JM, Suarez-Gutierrez MA, Holzwarth N, Albiña-Palmarola P, Kirchner T, Hernandez-Aguilera A, Fernandez-Amador JA, Vazifehdan F, Woitzik J, Maier-Hein L, Sanchez-Porras R. Depth-Specific Hypoxic Responses to Spreading Depolarizations in Gyrencephalic Swine Cortex Unveiled by Photoacoustic Imaging. Transl Stroke Res 2024:10.1007/s12975-024-01247-8. [PMID: 38622426 DOI: 10.1007/s12975-024-01247-8] [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: 11/26/2023] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/17/2024]
Abstract
Spreading depolarizations (SDs) are a marker of brain injury and have a causative effect on ischemic lesion progression. The hemodynamic responses elicited by SDs are contingent upon the metabolic integrity of the affected tissue, with vasoconstrictive reactions leading to pronounced hypoxia often indicating poor outcomes. The stratification of hemodynamic responses within different cortical layers remains poorly characterized. This pilot study sought to elucidate the depth-specific hemodynamic changes in response to SDs within the gray matter of the gyrencephalic swine brain. Employing a potassium chloride-induced SD model, we utilized multispectral photoacoustic imaging (PAI) to estimate regional cerebral oxygen saturation (rcSO2%) changes consequent to potassium chloride-induced SDs. Regions of interest were demarcated at three cortical depths covering up to 4 mm. Electrocorticography (ECoG) strips were placed to validate the presence of SDs. Through PAI, we detected 12 distinct rcSO2% responses, which corresponded with SDs detected in ECoG. Notably, a higher frequency of hypoxic responses was observed in the deeper cortical layers compared to superficial layers, where hyperoxic and mixed responses predominated (p < 0.001). This data provides novel insights into the differential oxygenation patterns across cortical layers in response to SDs, underlining the complexity of cerebral hemodynamics post-injury.
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Affiliation(s)
- Edgar Santos
- Department of Neurosurgery, Evangelisches Krankenhaus Oldenburg, Carl Von Ossietzky University of Oldenburg, Marienstraße 11, 26121, Oldenburg, Germany
- Department of Neurosurgery, Heidelberg University Hospital, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
- Spine Center Stuttgart, Paulinenhilfe, Diakonie-Klinikum Stuttgart, Stuttgart, Germany
| | - Juan M Lopez-Navarro
- Department of Neurosurgery, Evangelisches Krankenhaus Oldenburg, Carl Von Ossietzky University of Oldenburg, Marienstraße 11, 26121, Oldenburg, Germany
| | - Marcos Alejandro Suarez-Gutierrez
- Department of Neurosurgery, Evangelisches Krankenhaus Oldenburg, Carl Von Ossietzky University of Oldenburg, Marienstraße 11, 26121, Oldenburg, Germany
| | - Niklas Holzwarth
- Division of Intelligent Medical Systems, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Pablo Albiña-Palmarola
- Neuroradiologische Klinik, Klinikum Stuttgart, Stuttgart, Germany
- Medical Faculty, University Duisburg-Essen, Essen, Germany
- Department of Anatomy, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Thomas Kirchner
- Institut Für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany
| | - Adrian Hernandez-Aguilera
- Department of Neurosurgery, Heidelberg University Hospital, Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
| | | | - Farzam Vazifehdan
- Spine Center Stuttgart, Paulinenhilfe, Diakonie-Klinikum Stuttgart, Stuttgart, Germany
| | - Johannes Woitzik
- Department of Neurosurgery, Evangelisches Krankenhaus Oldenburg, Carl Von Ossietzky University of Oldenburg, Marienstraße 11, 26121, Oldenburg, Germany
| | - Lena Maier-Hein
- Division of Intelligent Medical Systems, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Renan Sanchez-Porras
- Department of Neurosurgery, Evangelisches Krankenhaus Oldenburg, Carl Von Ossietzky University of Oldenburg, Marienstraße 11, 26121, Oldenburg, Germany.
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8
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Li G, Lan L, He T, Tang Z, Liu S, Li Y, Huang Z, Guan Y, Li X, Zhang Y, Lai HY. Comprehensive Assessment of Ischemic Stroke in Nonhuman Primates: Neuroimaging, Behavioral, and Serum Proteomic Analysis. ACS Chem Neurosci 2024; 15:1548-1559. [PMID: 38527459 PMCID: PMC10996879 DOI: 10.1021/acschemneuro.3c00826] [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: 12/28/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/27/2024] Open
Abstract
Ischemic strokes, prevalence and impactful, underscore the necessity of advanced research models closely resembling human physiology. Our study utilizes nonhuman primates (NHPs) to provide a detailed exploration of ischemic stroke, integrating neuroimaging data, behavioral outcomes, and serum proteomics to elucidate the complex interplay of factors involved in stroke pathophysiology. We observed a consistent pattern in infarct volume, peaking at 1-month postmiddle cerebral artery occlusion (MCAO) and then stabilized. This pattern was strongly correlated to notable changes in motor function and working memory performance. Using diffusion tensor imaging (DTI), we detected significant alterations in fractional anisotropy (FA) and mean diffusivity (MD) values, signaling microstructural changes in the brain. These alterations closely correlated with the neurological and cognitive deficits that we observed, highlighting the sensitivity of DTI metrics in stroke assessment. Behaviorally, the monkeys exhibited a reliance on their unaffected limb for compensatory movements, a common response to stroke impairment. This adaptation, along with consistent DTI findings, suggests a significant impact of stroke on motor function and spatial perception. Proteomic analysis through MS/MS functional enrichment identified two distinct groups of proteins with significant changes post-MCAO. Notably, MMP9, THBS1, MB, PFN1, and YWHAZ were identified as potential biomarkers and therapeutic targets for ischemic stroke. Our results underscore the complex nature of stroke and advocate for an integrated approach, combining neuroimaging, behavioral studies, and proteomics, for advancing our understanding and treatment of this condition.
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Affiliation(s)
- Ge Li
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Lan Lan
- Department
of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang
University School of Medicine, Hangzhou 310029, China
- Department
of Psychology and Behavior Science, Zhejiang
University, Hangzhou 310029, China
| | - Tingting He
- Department
of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang
University School of Medicine, Hangzhou 310029, China
- College
of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310029, China
| | - Zheng Tang
- Department
of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang
University School of Medicine, Hangzhou 310029, China
| | - Shuhua Liu
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Yunfeng Li
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Zhongqiang Huang
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Yalun Guan
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Xuejiao Li
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Yu Zhang
- Guangdong
Provincial Key Laboratory of Laboratory Animals, Guangdong Laboratory Animals Monitoring Institute, Guangzhou 510663, China
| | - Hsin-Yi Lai
- Department
of Neurology of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, Zhejiang
University School of Medicine, Hangzhou 310029, China
- College
of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou 310029, China
- Liangzhu
Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine
Integration, State Key Laboratory of Brain-machine Intelligence, School
of Brain Science and Brain Medicine, Zhejiang
University, Hangzhou 310029, China
- Affiliated
Mental Health Center & Hangzhou Seventh People’s Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou 310029, China
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Jiang Z, Wei J, Liang J, Huang W, Ouyang F, Chen C, Li P, Cao S, Cai Y, Li J, Huang B, Zeng J, Chen Y. Dl-3-n-Butylphthalide Alleviates Secondary Brain Damage and Improves Working Memory After Stroke in Cynomolgus Monkeys. Stroke 2024; 55:725-734. [PMID: 38406851 DOI: 10.1161/strokeaha.123.045037] [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: 08/30/2023] [Accepted: 01/17/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Remote secondary neurodegeneration is associated with poststroke cognitive impairment (PSCI). Dl-3-n-butylphthalide (NBP) improves PSCI clinically. However, whether it ameliorates PSCI by alleviating secondary neurodegeneration remains uncertain. Nonhuman primates provide more relevant models than rodents for human stroke and PSCI. This study investigated the effects of NBP on PSCI and secondary neurodegeneration in cynomolgus monkeys after permanent left middle cerebral artery occlusion (MCAO). METHODS Thirteen adult male cynomolgus monkeys were randomly assigned to sham (n=4), MCAO+placebo (n=5), and MCAO+NBP groups (n=4). The MCAO+placebo and MCAO+NBP groups received saline and NBP injections intravenously, respectively, starting at 6-hour postsurgery for 2 weeks, followed by soybean oil and NBP orally, respectively, for 10 weeks after MCAO. Infarct size was assessed at week 4 by magnetic resonance imaging. Working memory and executive function were evaluated dynamically using the delayed response task and object retrieval detour task, respectively. Neuron loss, glia proliferation, and neuroinflammation in the ipsilateral dorsal lateral prefrontal cortex, thalamus, and hippocampus were analyzed by immunostaining 12 weeks after MCAO. RESULTS Infarcts were located in the left middle cerebral artery region, apart from the ipsilateral dorsal lateral prefrontal cortex, thalamus, or hippocampus, with no significant difference between the MCAO+placebo and MCAO+NBP group. Higher success in delayed response task was achieved at weeks 4, 8, and 12 after NBP compared with placebo treatments (P<0.05), but not in the object retrieval detour task (all P>0.05). More neurons and less microglia, astrocytes, CD68-positive microglia, tumor necrosis factor-α, and inducible NO synthase were observed in the ipsilateral dorsal lateral prefrontal cortex and thalamus after 12 weeks of NBP treatment (P<0.05), but not in the hippocampus (P>0.05). CONCLUSIONS Our findings indicate that NBP improves working memory by alleviating remote secondary neurodegeneration and neuroinflammation in the ipsilateral dorsal lateral prefrontal cortex and thalamus after MCAO in cynomolgus monkeys.
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Affiliation(s)
- Zimu Jiang
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Jiating Wei
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Jiahui Liang
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Weixian Huang
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Fubing Ouyang
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Chunyong Chen
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- Department of Neurology, The First Affiliated Hospital, Guangxi Medical University; Nanning, China (C.C., P.L., B.H.)
| | - Pingping Li
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- Department of Neurology, The First Affiliated Hospital, Guangxi Medical University; Nanning, China (C.C., P.L., B.H.)
| | - Suhan Cao
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Yuangui Cai
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Jianle Li
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Baozi Huang
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- Department of Neurology, The First Affiliated Hospital, Guangxi Medical University; Nanning, China (C.C., P.L., B.H.)
| | - Jinsheng Zeng
- Department of Neurology (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z.), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
| | - Yicong Chen
- Section II, Department of Neurology and Stroke Center (Y. Chen), The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
- National Key Clinical Department, Key Discipline of Neurology; Guangzhou, China (Z.J., J.W., J. Liang, W.H., F.O., C.C., P.L., S.C., Y. Cai, J. Li, B.H., J.Z., Y. Chen)
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10
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Zhang L, Zhou X, Zhao J, Wang X. Research hotspots and frontiers of preconditioning in cerebral ischemia: A bibliometric analysis. Heliyon 2024; 10:e24757. [PMID: 38317957 PMCID: PMC10839892 DOI: 10.1016/j.heliyon.2024.e24757] [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: 07/11/2023] [Revised: 12/13/2023] [Accepted: 01/12/2024] [Indexed: 02/07/2024] Open
Abstract
Background Preconditioning is a promising strategy against ischemic brain injury, and numerous studies in vitro and in vivo have demonstrated its neuroprotective effects. However, at present there is no bibliometric analysis of preconditioning in cerebral ischemia. Therefore, a comprehensive overview of the current status, hot spots, and emerging trends in this research field is necessary. Materials and methods Studies on preconditioning in cerebral ischemia from January 1999-December 2022 were retrieved from the Web of Science Core Collection (WOSCC) database. CiteSpace was used for data mining and visual analysis. Results A total of 1738 papers on preconditioning in cerebral ischemia were included in the study. The annual publications showed an upwards and then downwards trend but currently remain high in terms of annual publications. The US was the leading country, followed by China, the most active country in recent years. Capital Medical University published the largest number of articles. Perez-Pinzon, Miguel A contributed the most publications, while KITAGAWA K was the most cited author. The focus of the study covered three areas: (1) relevant diseases and experimental models, (2) types of preconditioning and stimuli, and (3) mechanisms of ischemic tolerance. Remote ischemic preconditioning, preconditioning of mesenchymal stem cells (MSCs), and inflammation are the frontiers of research in this field. Conclusion Our study provides a visual and scientific overview of research on preconditioning in cerebral ischemia, providing valuable information and new directions for researchers.
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Affiliation(s)
- Long Zhang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
- Department of Traditional Chinese Medicine, Zibo TCM-Integrated Hospital, Zibo ,255026, China
| | - Xue Zhou
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Jing Zhao
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
- Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Xingchen Wang
- Division of Neurology, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250001, China
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11
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Chen Y, Li Z, Ji G, Wang S, Mo C, Ding B. Lung regeneration: diverse cell types and the therapeutic potential. MedComm (Beijing) 2024; 5:e494. [PMID: 38405059 PMCID: PMC10885188 DOI: 10.1002/mco2.494] [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: 07/30/2023] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/27/2024] Open
Abstract
Lung tissue has a certain regenerative ability and triggers repair procedures after injury. Under controllable conditions, lung tissue can restore normal structure and function. Disruptions in this process can lead to respiratory system failure and even death, causing substantial medical burden. The main types of respiratory diseases are chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF), and acute respiratory distress syndrome (ARDS). Multiple cells, such as lung epithelial cells, endothelial cells, fibroblasts, and immune cells, are involved in regulating the repair process after lung injury. Although the mechanism that regulates the process of lung repair has not been fully elucidated, clinical trials targeting different cells and signaling pathways have achieved some therapeutic effects in different respiratory diseases. In this review, we provide an overview of the cell type involved in the process of lung regeneration and repair, research models, and summarize molecular mechanisms involved in the regulation of lung regeneration and fibrosis. Moreover, we discuss the current clinical trials of stem cell therapy and pharmacological strategies for COPD, IPF, and ARDS treatment. This review provides a reference for further research on the molecular and cellular mechanisms of lung regeneration, drug development, and clinical trials.
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Affiliation(s)
- Yutian Chen
- The Department of Endovascular SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan UniversityChengduChina
| | - Zhen Li
- The Department of Endovascular SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Gaili Ji
- Department of GynecologyThe Third Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Shaochi Wang
- Department of Translational MedicineThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Chunheng Mo
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan UniversityChengduChina
| | - Bi‐Sen Ding
- Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, State Key Laboratory of Biotherapy, West China Second University Hospital, Sichuan UniversityChengduChina
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12
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Teeraratkul C, Tomaiuolo M, Stalker TJ, Mukherjee D. Investigating clot-flow interactions by integrating intravital imaging with in silico modeling for analysis of flow, transport, and hemodynamic forces. Sci Rep 2024; 14:696. [PMID: 38184693 PMCID: PMC10771506 DOI: 10.1038/s41598-023-49945-x] [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: 05/03/2023] [Accepted: 12/13/2023] [Indexed: 01/08/2024] Open
Abstract
As a blood clot forms, grows, deforms, and embolizes following a vascular injury, local clot-flow interactions lead to a highly dynamic flow environment. The local flow influences transport of biochemical species relevant for clotting, and determines the forces on the clot that in turn lead to clot deformation and embolization. Despite this central role, quantitative characterization of this dynamic clot-flow interaction and flow environment in the clot neighborhood remains a major challenge. Here, we propose an approach that integrates dynamic intravital imaging with computer geometric modeling and computational flow and transport modeling to develop a unified in silico framework to quantify the dynamic clot-flow interactions. We outline the development of the methodology referred to as Intravital Integrated In Silico Modeling or IVISim, and then demonstrate the method on a sample set of simulations comprising clot formation following laser injury in two mouse cremaster arteriole injury model data: one wild-type mouse case, and one diYF knockout mouse case. Simulation predictions are verified against experimental observations of transport of caged fluorescent Albumin (cAlb) in both models. Through these simulations, we illustrate how the IVISim methodology can provide insights into hemostatic processes, the role of flow and clot-flow interactions, and enable further investigations comparing and contrasting different biological model scenarios and parameter variations.
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Affiliation(s)
- Chayut Teeraratkul
- Paul M Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, USA
| | - Maurizio Tomaiuolo
- Cardeza Foundation for Hematologic Research, Department of Medicine, Thomas Jefferson University, Philadelphia, USA
| | | | - Debanjan Mukherjee
- Paul M Rady Department of Mechanical Engineering, University of Colorado Boulder, Boulder, USA.
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13
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ter Schiphorst A, Turc G, Hassen WB, Oppenheim C, Baron JC. Incidence, severity and impact on functional outcome of persistent hypoperfusion despite large-vessel recanalization, a potential marker of impaired microvascular reperfusion: Systematic review of the clinical literature. J Cereb Blood Flow Metab 2024; 44:38-49. [PMID: 37871624 PMCID: PMC10905632 DOI: 10.1177/0271678x231209069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/02/2023] [Accepted: 10/02/2023] [Indexed: 10/25/2023]
Abstract
The reported incidence of persistent hypoperfusion despite complete recanalization as surrogate for impaired microvascular reperfusion (IMR) has varied widely among clinical studies, possibly due to differences in i) definition of complete recanalization, with only recent Thrombolysis in Cerebral Infarction (TICI) grading schemes allowing distinction between complete (TICI3) and partial recanalization with distal occlusions (TICI2c); ii) operational definition of IMR; and iii) consideration of potential alternative causes for hypoperfusion, notably carotid stenosis, re-occlusion and post-thrombectomy hemorrhage. We performed a systematic review to identify clinical studies that carried out brain perfusion imaging within 72 hrs post-thrombectomy for anterior circulation stroke and reported hypoperfusion rates separately for TICI3 and TICI2c grades. Authors were contacted if this data was missing. We identified eight eligible articles, altogether reporting 636 patients. The incidence of IMR after complete recanalization (i.e., TICI3) tended to decrease with the number of considered alternative causes of hypoperfusion: range 12.5-42.9%, 0-31.6% and 0-9.1% in articles that considered none, two or all three causes, respectively. No study reported the impact of IMR on functional outcome separately for TICI-3 patients. Based on this systematic review, IMR in true complete recanalization appears relatively rare, and reported incidence highly depends on definition used and consideration of confounding factors.
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Affiliation(s)
- Adrien ter Schiphorst
- Department of Neurology, University Hospital of Montpellier, CHU Gui de Chauliac, Montpellier, France
| | - Guillaume Turc
- Department of Neurology, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Université Paris Cité, Inserm U1266, FHU NeuroVasc, Paris, France
| | - Wagih Ben Hassen
- Department of Neuroradiology, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Université Paris Cité, Inserm U1266, Paris, France
| | - Catherine Oppenheim
- Department of Neuroradiology, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Université Paris Cité, Inserm U1266, Paris, France
| | - Jean-Claude Baron
- Department of Neurology, GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte-Anne, Université Paris Cité, Inserm U1266, FHU NeuroVasc, Paris, France
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14
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Harland N, Knoll J, Amend B, Abruzzese T, Abele H, Jakubowski P, Stenzl A, Aicher WK. Xenogenic Application of Human Placenta-Derived Mesenchymal Stromal Cells in a Porcine Large Animal Model. Cell Transplant 2024; 33:9636897241226737. [PMID: 38323325 PMCID: PMC10851762 DOI: 10.1177/09636897241226737] [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: 07/31/2023] [Revised: 11/30/2023] [Accepted: 01/02/2024] [Indexed: 02/08/2024] Open
Abstract
In animal models, cell therapies for different diseases or injuries have been very successful. Preclinical studies with cells aiming at a stroke, heart attack, and other emergency situations were promising but sometimes failed translation in clinical situations. We, therefore, investigated if human placenta-derived mesenchymal stromal cells can be injected in pigs without provoking rejection to serve as a xenogenic transplantation model to bridge preclinical animal studies to more promising future preclinical studies. Male human placenta-derived mesenchymal stromal cells were isolated, expanded, and characterized by flow cytometry, in vitro differentiation, and quantitative reverse-transcription polymerase chain reaction to prove their nature. Such cells were injected into the sphincter muscle of the urethrae of female pigs under visual control by cystoscopy employing a Williams needle. The animals were observed over 7 days of follow-up. Reactions of the host to the xenogeneic cells were explored by monitoring body temperature, and inflammatory markers including IL-1ß, CRP, and haptoglobin in blood. After sacrifice on day 7, infiltration of inflammatory cells in the tissue targeted was investigated by histology and immunofluorescence. DNA of injected human cells was detected by PCR. Upon injection in vascularized porcine tissue, human placenta-derived mesenchymal stromal cells were tolerated, and systemic inflammatory parameters were not elevated. DNA of injected cells was detected in situ 7 days after injection, and moderate local infiltration of inflammatory cells was observed. The therapeutic potential of human placenta-derived mesenchymal stromal cells can be explored in porcine large animal models of injury or disease. This seems a promising strategy to explore technologies for cell injections in infarcted hearts or small organs and tissues in therapeutically relevant amounts requiring large animal models to yield meaningful outcomes.
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Affiliation(s)
- Niklas Harland
- Department of Urology, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Jasmin Knoll
- Center for Medical Research, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Bastian Amend
- Department of Urology, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Tanja Abruzzese
- Center for Medical Research, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Harald Abele
- Department of Gynecology and Obstetrics, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Peter Jakubowski
- Department of Gynecology and Obstetrics, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Arnulf Stenzl
- Center for Medical Research, University Hospital, Eberhard Karls University, Tuebingen, Germany
| | - Wilhelm K. Aicher
- Department of Urology, University Hospital, Eberhard Karls University, Tuebingen, Germany
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15
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Zhang Y, Jiang M, Gao Y, Zhao W, Wu C, Li C, Li M, Wu D, Wang W, Ji X. "No-reflow" phenomenon in acute ischemic stroke. J Cereb Blood Flow Metab 2024; 44:19-37. [PMID: 37855115 PMCID: PMC10905637 DOI: 10.1177/0271678x231208476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 08/04/2023] [Accepted: 09/13/2023] [Indexed: 10/20/2023]
Abstract
Acute ischemic stroke (AIS) afflicts millions of individuals worldwide. Despite the advancements in thrombolysis and thrombectomy facilitating proximal large artery recanalization, the resultant distal hypoperfusion, referred to "no-reflow" phenomenon, often impedes the neurological function restoration in patients. Over half a century of scientific inquiry has validated the existence of cerebral "no-reflow" in both animal models and human subjects. Furthermore, the correlation between "no-reflow" and adverse clinical outcomes underscores the necessity to address this phenomenon as a pivotal strategy for enhancing AIS prognoses. The underlying mechanisms of "no-reflow" are multifaceted, encompassing the formation of microemboli, microvascular compression and contraction. Moreover, a myriad of complex mechanisms warrant further investigation. Insights gleaned from mechanistic exploration have prompted advancements in "no-reflow" treatment, including microthrombosis therapy, which has demonstrated clinical efficacy in improving patient prognoses. The stagnation in current "no-reflow" diagnostic methods imposes limitations on the timely application of combined therapy on "no-reflow" post-recanalization. This narrative review will traverse the historical journey of the "no-reflow" phenomenon, delve into its underpinnings in AIS, and elucidate potential therapeutic and diagnostic strategies. Our aim is to equip readers with a swift comprehension of the "no-reflow" phenomenon and highlight critical points for future research endeavors.
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Affiliation(s)
- Yang Zhang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Miaowen Jiang
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Yuan Gao
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China
| | - Wenbo Zhao
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Chuanjie Wu
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Chuanhui Li
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ming Li
- China-America Institute of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Di Wu
- China-America Institute of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Wu Wang
- Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xunming Ji
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China-America Institute of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
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16
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Benatti HR, Prestigiacomo RD, Taghian T, Miller R, King R, Gounis MJ, Celik U, Bertrand S, Tuominen S, Bierfeldt L, Parsley E, Gallagher J, Hall EF, McElroy AW, Sena-Esteves M, Khvorova A, Aronin N, Gray-Edwards HL. Awake intracerebroventricular delivery and safety assessment of oligonucleotides in a large animal model. Mol Ther Methods Clin Dev 2023; 31:101122. [PMID: 37920238 PMCID: PMC10618110 DOI: 10.1016/j.omtm.2023.101122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/23/2023] [Indexed: 11/04/2023]
Abstract
Oligonucleotide therapeutics offer great promise in the treatment of previously untreatable neurodegenerative disorders; however, there are some challenges to overcome in pre-clinical studies. (1) They carry a well-established dose-related acute neurotoxicity at the time of administration. (2) Repeated administration into the cerebrospinal fluid may be required for long-term therapeutic effect. Modifying oligonucleotide formulation has been postulated to prevent acute toxicity, but a sensitive and quantitative way to track seizure activity in pre-clinical studies is lacking. The use of intracerebroventricular (i.c.v.) catheters offers a solution for repeated dosing; however, fixation techniques in large animal models are not standardized and are not reliable. Here we describe a novel surgical technique in a sheep model for i.c.v. delivery of neurotherapeutics based on the fixation of the i.c.v. catheter with a 3D-printed anchorage system composed of plastic and ceramic parts, compatible with magnetic resonance imaging, computed tomography, and electroencephalography (EEG). Our technique allowed tracking electrical brain activity in awake animals via EEG and video recording during and for the 24-h period after administration of a novel oligonucleotide in sheep. Its anchoring efficiency was demonstrated for at least 2 months and will be tested for up to a year in ongoing studies.
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Affiliation(s)
- Hector Ribeiro Benatti
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Rachel D. Prestigiacomo
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Toloo Taghian
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
| | - Rachael Miller
- Department of Endocrinology, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- RNA Therapeutic Institute, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Robert King
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
| | - Matthew J. Gounis
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
| | - Ugur Celik
- Center for Clinical Research, UMass Chan Medical School, 55 N Lake Ave, Worcester MA 01655, USA
| | - Stephanie Bertrand
- Cummings School of Veterinary Medicine, Tufts University, Grafton MA 01536, USA
| | - Susan Tuominen
- Department of Animal Medicine, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Lindsey Bierfeldt
- Department of Animal Medicine, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Elizabeth Parsley
- Cummings School of Veterinary Medicine, Tufts University, Grafton MA 01536, USA
| | - Jillian Gallagher
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Erin F. Hall
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Abigail W. McElroy
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Miguel Sena-Esteves
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- Department of Neurology, UMass Chan Medical School, 368 Plantation Street, Worcester MA 01605, USA
| | - Anastasia Khvorova
- RNA Therapeutic Institute, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Neil Aronin
- Department of Endocrinology, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- RNA Therapeutic Institute, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Heather L. Gray-Edwards
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
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17
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López-Morales MA, Castelló-Ruiz M, Burguete MC, Hervás D, Pérez-Pinzón MA, Salom JB. Effect and mechanisms of resveratrol in animal models of ischemic stroke: A systematic review and Bayesian meta-analysis. J Cereb Blood Flow Metab 2023; 43:2013-2028. [PMID: 37802493 PMCID: PMC10925864 DOI: 10.1177/0271678x231206236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 08/03/2023] [Accepted: 09/20/2023] [Indexed: 10/10/2023]
Abstract
Resveratrol (RSV) holds promise as cerebroprotective treatment in cerebral ischemia. This systematic review aims to assess the effects and mechanisms of RSV in animal models of ischemic stroke. We searched Medline, Embase and Web of Science to identify 75 and 57 eligible rodent studies for qualitative and quantitative syntheses, respectively. Range of evidence met 10 of 13 STAIR criteria. Median (Q1, Q3) quality score was 7 (5, 8) on the CAMARADES 15-item checklist. Bayesian meta-analysis showed SMD estimates (95% CI) favoring RSV: infarct size (-1.72 [-2.03; -1.41]), edema size (-1.61 [-2.24; -0.98]), BBB impairment (-1.85 [-2.54; -1.19]), neurofunctional impairment (-1.60 [-1.92; -1.29]), and motor performance (1.39 [0.64; 2.08]); and less probably neuronal survival (0.63 [-1.40; 2.48]) and apoptosis (-0.96 [-2.87; 1.02]). Species (rat vs mouse) was associated to a larger benefit. Sensitivity analyses confirmed robustness of the estimates. Reduction of oxidative stress, inflammation, and apoptosis underlie these effects. Our results quantitatively state the beneficial effects of RSV on structural and functional outcomes in rodent stroke models, update the evidence on the mechanisms of action, and provide an exhaustive list of targeted signaling pathways. Current evidence highlights the need for conducting further high-quality preclinical research to better inform clinical research.
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Affiliation(s)
- Mikahela A López-Morales
- Unidad Mixta de Investigación Cerebrovascular, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
| | - María Castelló-Ruiz
- Unidad Mixta de Investigación Cerebrovascular, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Departamento de Biología Celular, Biología Funcional y Antropología Física, Universidad de Valencia, Valencia, Spain
| | - María C Burguete
- Unidad Mixta de Investigación Cerebrovascular, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Departamento de Fisiología, Universidad de Valencia, Valencia, Spain
| | - David Hervás
- Departamento de Estadística e Investigación Operativa Aplicadas y Calidad, Universitat Politècnica de València, Valencia, Spain
| | - Miguel A Pérez-Pinzón
- Peritz Scheinberg Cerebral Vascular Disease Research Laboratories, Department of Neurology, Miller School of Medicine, University of Miami, Miami, USA
| | - Juan B Salom
- Unidad Mixta de Investigación Cerebrovascular, Instituto de Investigación Sanitaria La Fe, Valencia, Spain
- Departamento de Fisiología, Universidad de Valencia, Valencia, Spain
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18
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Scrutton AM, Ollis F, Boltze J. Mononuclear cell therapy of neonatal hypoxic-ischemic encephalopathy in preclinical versus clinical studies: a systematic analysis of therapeutic efficacy and study design. NEUROPROTECTION 2023; 1:143-159. [PMID: 38213793 PMCID: PMC7615506 DOI: 10.1002/nep3.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 11/08/2023] [Indexed: 01/13/2024]
Abstract
Background Hypoxic-ischemic encephalopathy (HIE) is a devastating condition affecting around 8.5 in 1000 newborns globally. Therapeutic hypothermia (TH) can reduce mortality and, to a limited extent, disability after HIE. Nevertheless, there is a need for new and effective treatment strategies. Cell based treatments using mononuclear cells (MNC), which can be sourced from umbilical cord blood, are currently being investigated. Despite promising preclinical results, there is currently no strong indicator for clinical efficacy of the approach. This analysis aimed to provide potential explanations for this discrepancy. Methods A systematic review and meta-analysis was conducted according to the Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) guidelines. Preclinical and clinical studies were retrieved from PubMed, Web of Science, Scopus, and clinicaltrials.gov using a predefined search strategy. A total of 17 preclinical and 7 clinical studies were included. We analyzed overall MNC efficacy in preclinical trials, the methodological quality of preclinical trials and relevant design features in preclinical versus clinical trials. Results There was evidence for MNC therapeutic efficacy in preclinical models of HIE. The methodological quality of preclinical studies was not optimal, and statistical design quality was particularly poor. However, methodological quality was above the standard in other fields. There were significant differences in preclinical versus clinical study design including the use of TH as a baseline treatment (only in clinical studies) and much higher MNC doses being applied in preclinical studies. Conclusions Based on the analyzed data, it is unlikely that therapeutic effect size is massively overestimated in preclinical studies. It is more plausible that the many design differences between preclinical and clinical trials are responsible for the so far lacking proof of efficacy of MNC treatments in HIE. Additional preclinical and clinical research is required to optimize the application of MNC for experimental HIE treatment.
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Affiliation(s)
- Alexander M. Scrutton
- School of Life Sciences, University of Warwick, Coventry, United Kingdom
- Neurobiology Division, MRC Laboratory of Molecular Biology, University of Cambridge, Cambridge, United Kingdom
| | - Francesca Ollis
- School of Life Sciences, University of Warwick, Coventry, United Kingdom
| | - Johannes Boltze
- School of Life Sciences, University of Warwick, Coventry, United Kingdom
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19
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Lange S, Inal JM. Animal Models of Human Disease. Int J Mol Sci 2023; 24:15821. [PMID: 37958801 PMCID: PMC10650829 DOI: 10.3390/ijms242115821] [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: 10/23/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
The use of animal models of human disease is critical for furthering our understanding of disease mechanisms, for the discovery of novel targets for treatment, and for translational research. This Special Topic entitled "Animal Models of Human Disease" aimed to collect state-of-the-art primary research studies and review articles from international experts and leading groups using animal models to study human diseases. Submissions were welcomed on a wide range of animal models and pathologies, including infectious disease, acute injury, regeneration, cancer, autoimmunity, degenerative and chronic disease. Seven participating MDPI journals supported the Special Topic, namely: Biomedicines, Cells, Current Issues in Molecular Biology, Diagnostics, Genes, the International Journal of Molecular Sciences, and the International Journal of Translational Medicine. In total, 46 papers were published in this Special Topic, with 37 full length original research papers, 2 research communications and 7 reviews. These contributions cover a wide range of clinically relevant, translatable, and comparative animal models, as well as furthering understanding of fundamental sciences, covering topics on physiological processes, on degenerative, inflammatory, infectious, autoimmune, neurological, metabolic, heamatological, hormonal and mitochondrial disorders, developmental processes and diseases, cardiology, cancer, trauma, stress, and ageing.
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Affiliation(s)
- Sigrun Lange
- Tissue Architecture and Regeneration Research Group, Department of Biomedical Sciences, University of Westminster, London W1W 6UW, UK
- Pathobiology and Extracellular Vesicles Research Group, Department of Biomedical Sciences, University of Westminster, London W1W 6UW, UK
| | - Jameel M. Inal
- Cell Communication in Disease Pathology, School of Human Sciences, London Metropolitan University, London N7 8DB, UK;
- Biosciences Research Group, School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9EU, UK
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20
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Akkoca A, Büyükakıllı B, Ballı E, Gültekin B, Özbay E, Oruç Demirbağ H, Türkseven ÇH. Protective effect of MitoTEMPO against cardiac dysfunction caused by ischemia-reperfusion: MCAO stroke model study. Int J Neurosci 2023:1-12. [PMID: 37862003 DOI: 10.1080/00207454.2023.2273768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/17/2023] [Indexed: 10/21/2023]
Abstract
PURPOSE Neurological impairments are the leading cause of post-stroke mortality, while stroke-related cardiovascular diseases rank second in significance. This study investigates the potential protective effects of MitoTEMPO (2,2,6,6-tetramethyl-4-[[2-(triphenylphosphonio) acetyl] amino]-1-piperidinyloxy, monochloride, monohydrate), a mitochondria-specific antioxidant, against cardiac and neurological complications following stroke. The objective is to assess whether MitoTEMPO can be utilized as a protective agent for individuals with a high risk of stroke. MATERIALS AND METHODS Seventeen-week-old male Wistar Albino rats were randomly assigned to three groups: SHAM, ischemia-reperfusion and MitoTEMPO + ischemia-reperfusion (MitoTEMPO injection 0.7 mg/kg/day for 14 days). The SHAM group underwent a sham operation, while the ischemia-reperfusion group underwent 1-h middle cerebral artery occlusion followed by three days of reperfusion. Afterwards, noninvasive thoracic electrical bioimpedance and electrocardiography measurements were taken, and sample collection was performed for histological and biochemical examinations. RESULTS Our thoracic electrical bioimpedance and electrocardiography findings demonstrated that MitoTEMPO exhibited a protective effect on most parameters affected by ischemia-reperfusion compared to the SHAM group. Furthermore, our biochemical and histological data revealed a significant protective effect of MitoTEMPO against oxidative damage. CONCLUSIONS The findings suggest that both ischemia-reperfusion-induced cardiovascular abnormalities and the protective effect of MitoTEMPO may involve G-protein coupled receptor-mediated signaling mechanisms. This study was conducted with limitations including a single gender, a uniform age group, a specific stroke model limited to middle cerebral artery, and pre-scheduled only one ischemia-reperfusion period. In future studies, addressing these limitations may enable the implementation of preventive measures for individuals at high risk of stroke.
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Affiliation(s)
- Ahmet Akkoca
- Department of Occupational Health and Safety, Taşkent Vocational School, Selcuk University, Konya, Türkiye
| | - Belgin Büyükakıllı
- Department of Biophysics, Faculty of Medicine, Mersin University, Mersin, Türkiye
| | - Ebru Ballı
- Department of Histology and Embryology, Faculty of Medicine, Mersin University, Mersin, Türkiye
| | - Burcu Gültekin
- Department of Histology and Embryology, Faculty of Medicine, Necmettin Erbakan University, Konya, Türkiye
| | - Erkan Özbay
- Department of Medical Services and Techniques, Health Services Vocational School, Karamanoğlu Mehmetbey University, Karaman, Türkiye
| | - Hatice Oruç Demirbağ
- Department of Histology and Embryology, Faculty of Medicine, Mersin University, Mersin, Türkiye
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21
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Mu J, Hao P, Duan H, Zhao W, Wang Z, Yang Z, Li X. Non-human primate models of focal cortical ischemia for neuronal replacement therapy. J Cereb Blood Flow Metab 2023; 43:1456-1474. [PMID: 37254891 PMCID: PMC10414004 DOI: 10.1177/0271678x231179544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 03/13/2023] [Accepted: 04/26/2023] [Indexed: 06/01/2023]
Abstract
Despite the high prevalence, stroke remains incurable due to the limited regeneration capacity in the central nervous system. Neuronal replacement strategies are highly diverse biomedical fields that attempt to replace lost neurons by utilizing exogenous stem cell transplants, biomaterials, and direct neuronal reprogramming. Although these approaches have achieved encouraging outcomes mostly in the rodent stroke model, further preclinical validation in non-human primates (NHP) is still needed prior to clinical trials. In this paper, we briefly review the recent progress of promising neuronal replacement therapy in NHP stroke studies. Moreover, we summarize the key characteristics of the NHP as highly valuable translational tools and discuss (1) NHP species and their advantages in terms of genetics, physiology, neuroanatomy, immunology, and behavior; (2) various methods for establishing NHP focal ischemic models to study the regenerative and plastic changes associated with motor functional recovery; and (3) a comprehensive analysis of experimentally and clinically accessible outcomes and a potential adaptive mechanism. Our review specifically aims to facilitate the selection of the appropriate NHP cortical ischemic models and efficient prognostic evaluation methods in preclinical stroke research design of neuronal replacement strategies.
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Affiliation(s)
- Jiao Mu
- Beijing Key Laboratory for Biomaterials and Neural Regeneration, School of Engineering Medicine, Beihang University, Beijing, China
| | - Peng Hao
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Hongmei Duan
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Wen Zhao
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Zijue Wang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Zhaoyang Yang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Xiaoguang Li
- Beijing Key Laboratory for Biomaterials and Neural Regeneration, School of Engineering Medicine, Beihang University, Beijing, China
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
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22
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Zakeri AS, Wheeler DG, Huttinger A, Carfora A, Kini A, Stork T, Yacoub S, Anderson C, Joseph M, Shujaat MT, Nimjee SM. A canine thromboembolic model of anterior circulation large vessel occlusion stroke. Heliyon 2023; 9:e14692. [PMID: 37089293 PMCID: PMC10119506 DOI: 10.1016/j.heliyon.2023.e14692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/01/2023] [Accepted: 03/15/2023] [Indexed: 04/03/2023] Open
Abstract
Purpose To develop a large animal preclinical model of thromboembolic stroke with stable, protracted large vessel occlusion (LVO) utilizing an autologous clot. Materials and methods A reproducible canine model of large vessel occlusion stroke was established by endovascular placement of an autologous clot into the middle cerebral artery (MCA) of six adult hounds and confirmed using digital subtraction angiography (DSA). Infarct volume and evidence of hemorrhage were determined by magnetic resonance imaging (MRI) 7 h after occlusion and Thrombolysis in Cerebral Infarction scale (TICI) was assessed before and after clot placement and at 1, 6, 7, and 9 h after middle cerebral artery occlusion (MCAO). Heart rate (HR) and blood pressure (BP) were monitored continuously and invasively through an arterial sheath throughout the procedures and complete blood count and blood gas analysis completed at time of sacrifice. Histopathological findings at time of sacrifice were used to confirm stroke volume and hemorrhage. Results MCAO with resulting TICI 0 flow was observed in all six animals, verified by serial DSA, and lack of collateral flow persisted for 9 h after clot placement until time of sacrifice. The mean infarct volume was 47.0 ± 6.7% of the ipsilateral hemisphere and no events of spontaneous recanalization or clot autolysis were observed. Conclusion We demonstrate a thromboembolic canine model of MCAO that is both feasible and results in consistent infarct volumes to generate a clinically relevant LVO. This model is important to evaluate treatment of LVO in acute ischemic stroke (AIS) outside the established 4.5 h recombinant tissue plasminogen activator (rTPA) therapeutic window utilizing a prolonged occlusive thrombus.
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23
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Yu M, Xiao G, Han L, Peng L, Wang H, He S, Lyu M, Zhu Y. QiShen YiQi and its components attenuate acute thromboembolic stroke and carotid thrombosis by inhibition of CD62P/PSGL-1-mediated platelet-leukocyte aggregate formation. Biomed Pharmacother 2023; 160:114323. [PMID: 36738500 DOI: 10.1016/j.biopha.2023.114323] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/20/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND QiShen YiQi (QSYQ) dropping pill, a component-based Chinese medicine consisting of benefiting Qi (YQ) and activating blood (HX) components, has been reported to exert a beneficial effect on cerebral ischemia-induced stroke. However, its efficacy and pharmacological mechanism on acute thromboembolic stroke is not clear. PURPOSE This study is to explore the preventative effect and pharmacological mechanism of QSYQ and its YQ/HX components on the formation of platelet-leukocyte aggregation (PLA) in acute thromboembolic stroke. STUDY DESIGN AND METHODS In vivo thromboembolic stroke model and FeCl3-induced carotid arterial occlusion models were used. Immunohistochemistry, Western blot, RT-qPCR, and flow cytometry experiments were performed to reveal the pharmacological mechanisms of QSYQ and its YQ/HX components. RESULTS In thromboembolic stroke rats, QSYQ significantly attenuated infarct area, improved neurological recovery, reduced PLA formation, and inhibited P-selection (CD62P)/ P-selectin glycoprotein ligand-1 (PSGL-1) expressions. The YQ component preferentially down-regulated PSGL-1 expression in leukocyte, while the HX component preferentially down-regulated CD62P expression in platelet. In carotid arterial thrombosis mice, QSYQ and its YQ/HX components inhibited thrombus formation, prolonged vessel occlusion time, reduced circulating leukocytes and P-selectin expression. PLA formation and platelet/leukocyte adhesion to endothelial cell were also inhibited by QSYQ and its YQ/HX components in vitro. CONCLUSION QSYQ and YQ/HX components attenuated thromboembolic stroke and carotid thrombosis by decreasing PLA formation via inhibiting CD62P/PSGL-1 expressions. This study shed a new light on the prevention of thromboembolic stroke.
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Affiliation(s)
- Mingxing Yu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China
| | - Guangxu Xiao
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China
| | - Linhong Han
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China
| | - Li Peng
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China
| | - Huanyi Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China
| | - Shuang He
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China
| | - Ming Lyu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China.
| | - Yan Zhu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Beihua South Road, JingHai District, Tianjin 301617, China.
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24
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Thrombolysis for acute ischaemic stroke: current status and future perspectives. Lancet Neurol 2023; 22:418-429. [PMID: 36907201 DOI: 10.1016/s1474-4422(22)00519-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 49.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 03/14/2023]
Abstract
Alteplase is currently the only approved thrombolytic agent for treatment of acute ischaemic stroke, but interest is burgeoning in the development of new thrombolytic agents for systemic reperfusion with an improved safety profile, increased efficacy, and convenient delivery. Tenecteplase has emerged as a potential alternative thrombolytic agent that might be preferred over alteplase because of its ease of administration and reported efficacy in patients with large vessel occlusion. Ongoing research efforts are also looking at potential improvements in recanalisation with the use of adjunct therapies to intravenous thrombolysis. New treatment strategies are also emerging that aim to reduce the risk of vessel reocclusion after intravenous thrombolysis administration. Other research endeavors are looking at the use of intra-arterial thrombolysis after mechanical thrombectomy to induce tissue reperfusion. The growing implementation of mobile stroke units and advanced neuroimaging could boost the number of patients who can receive intravenous thrombolysis by shortening onset-to-treatment times and identifying patients with salvageable penumbra. Continued improvements in this area will be essential to facilitate the ongoing research endeavors and to improve delivery of new interventions.
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25
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Li S, Fisher M. Improving Large Animal Ischemic Stroke Models for Translational Studies in the Era of Recanalization. Stroke 2023; 54:e16-e19. [PMID: 36503265 DOI: 10.1161/strokeaha.122.041354] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recanalization therapy with endovascular procedures has led to significant advances in the treatment of acute ischemic stroke. Animal models have been the basis for enhancing the development of novel treatments and therapeutic modalities. However, previous translational failures led to an increasing consensus that large animals should be included to bridge the gap between rodent and human studies. In the era of large vessel recanalization, large animal ischemic stroke models should be optimized for preclinical and translational stroke studies. Here we highlight recent progress of reproducing ischemic and reperfusion mechanisms in large animal models of stroke through surgical and endovascular methods. The importance of optimizing large animal stroke modeling is suggested by evaluating new findings from clinical trials and preclinical experiments using large animals, such as adopting advanced imaging analysis and long-term functional evaluation. Furthermore, we also acknowledge the importance of adhering to the Stroke Treatment and Academic Roundtable recommendations and the "3 R" principles to improve the quality and validity of large animal experiments. Large animal models offer many translational benefits; however, more work is still needed to enhance studies using large animal model on acute ischemic stroke in the era of recanalization.
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Affiliation(s)
- Shen Li
- Department of Neurology and Psychiatry, Beijing Shijitan Hospital, Capital Medical University, China and Beijing Institute of Brain Disorders, Capital Medical University, China (S.L.)
| | - Marc Fisher
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA (M.F.)
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26
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Sorby-Adams AJ, Marian OC, Bilecki IM, Elms LE, Camargo J, Hall K, Crowther RG, Leonard AV, Wadsworth GI, Spear JH, Turner RJ, Jones CF. Neurological scoring and gait kinematics to assess functional outcome in an ovine model of ischaemic stroke. Front Neurol 2023; 14:1071794. [PMID: 36891474 PMCID: PMC9986303 DOI: 10.3389/fneur.2023.1071794] [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: 10/16/2022] [Accepted: 01/27/2023] [Indexed: 02/22/2023] Open
Abstract
Background Assessment of functional impairment following ischaemic stroke is essential to determine outcome and efficacy of intervention in both clinical patients and pre-clinical models. Although paradigms are well described for rodents, comparable methods for large animals, such as sheep, remain limited. This study aimed to develop methods to assess function in an ovine model of ischaemic stroke using composite neurological scoring and gait kinematics from motion capture. Methods Merino sheep (n = 26) were anaesthetised and subjected to 2 hours middle cerebral artery occlusion. Animals underwent functional assessment at baseline (8-, 5-, and 1-day pre-stroke), and 3 days post-stroke. Neurological scoring was carried out to determine changes in neurological status. Ten infrared cameras measured the trajectories of 42 retro-reflective markers for calculation of gait kinematics. Magnetic resonance imaging (MRI) was performed at 3 days post-stroke to determine infarct volume. Intraclass Correlation Coefficients (ICC's) were used to assess the repeatability of neurological scoring and gait kinematics across baseline trials. The average of all baselines was used to compare changes in neurological scoring and kinematics at 3 days post-stroke. A principal component analysis (PCA) was performed to determine the relationship between neurological score, gait kinematics, and infarct volume post-stroke. Results Neurological scoring was moderately repeatable across baseline trials (ICC > 0.50) and detected marked impairment post-stroke (p < 0.05). Baseline gait measures showed moderate to good repeatability for the majority of assessed variables (ICC > 0.50). Following stroke, kinematic measures indicative of stroke deficit were detected including an increase in stance and stride duration (p < 0.05). MRI demonstrated infarction involving the cortex and/or thalamus (median 2.7 cm3, IQR 1.4 to 11.9). PCA produced two components, although association between variables was inconclusive. Conclusion This study developed repeatable methods to assess function in sheep using composite scoring and gait kinematics, allowing for the evaluation of deficit 3 days post-stroke. Despite utility of each method independently, there was poor association observed between gait kinematics, composite scoring, and infarct volume on PCA. This suggests that each of these measures has discreet utility for the assessment of stroke deficit, and that multimodal approaches are necessary to comprehensively characterise functional impairment.
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Affiliation(s)
- Annabel J Sorby-Adams
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Oana C Marian
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Isabella M Bilecki
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Levi E Elms
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Jonathan Camargo
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, United States
| | - Kelly Hall
- School of Public Health, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Robert G Crowther
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), University of South Australia, Adelaide, SA, Australia
| | - Anna V Leonard
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - George I Wadsworth
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Joshua H Spear
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Renée J Turner
- School of Biomedicine, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, SA, Australia
| | - Claire F Jones
- School of Mechanical Engineering, Faculty of Sciences, Engineering and Technology, The University of Adelaide, Adelaide, SA, Australia.,Adelaide Spinal Research Group, Centre for Orthopaedics and Trauma Research, The University of Adelaide, North Terrace, SA, Australia.,Department of Orthopaedics and Trauma, Royal Adelaide Hospital, Adelaide, SA, Australia
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27
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Wang Y, Wang M, Guo X, Han L, Kassab G. Safety and feasibility of left atrial appendage inversion in swine: A proof-of-concept study for potential therapy to prevent embolic stroke. Front Bioeng Biotechnol 2023; 11:1011121. [PMID: 36873377 PMCID: PMC9978740 DOI: 10.3389/fbioe.2023.1011121] [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: 08/03/2022] [Accepted: 02/09/2023] [Indexed: 02/18/2023] Open
Abstract
Objective: Left atrial appendage (LAA) occlusion or exclusion has been used in patients with atrial fibrillation to prevent stroke, but the techniques and devices have shortcomings. This study aims to validate the safety and feasibility of a novel LAA inversion procedure. Methods: LAA inversion procedures were done in six pigs. Before the procedure and at 8 weeks postoperatively, heart rate, blood pressure, and electrocardiogram (ECG) were recorded. The serum concentration of atrial natriuretic peptide (ANP) was measured. The LAA was observed and measured by transesophageal echocardiogram (TEE) and intracardiac echocardiogram (ICE). At 8 weeks after LAA inversion, the animal was euthanized. The heart was collected for morphology and histology, including hematoxylin-eosin, Masson trichrome, and immunofluorescence staining. Results: TEE and ICE showed that LAA was inverted, and the inversion was maintained during the 8-week study duration. Food intake, body weight gain, heart rate, blood pressure, ECG, and serum ANP level were comparable before and after the procedure. Morphology and histological staining showed that there was no obvious inflammation or thrombus. Tissue remodeling and fibrosis were observed at the LAA inverted site. Conclusion: The inversion of LAA effectively eliminates the dead space of LAA and thus may reduce the risk of embolic stroke. The novel procedure is safe and feasible, but the efficacy in reducing embolization remains to be demonstrated in future studies.
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Affiliation(s)
- Yanmin Wang
- California Medical Innovations Institute, San Diego, CA, United States
| | | | - Xiaomei Guo
- California Medical Innovations Institute, San Diego, CA, United States.,3DT Holdings, LCC, San Diego, CA, United States
| | - Ling Han
- California Medical Innovations Institute, San Diego, CA, United States
| | - Ghassan Kassab
- California Medical Innovations Institute, San Diego, CA, United States.,3DT Holdings, LCC, San Diego, CA, United States
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28
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Boudreau E, Kerwin SC, DuPont EB, Levine JM, Griffin JF. Temporal and sequence-related variability in diffusion-weighted imaging of presumed cerebrovascular accidents in the dog brain. Front Vet Sci 2022; 9:1008447. [PMID: 36419725 PMCID: PMC9676236 DOI: 10.3389/fvets.2022.1008447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 10/20/2022] [Indexed: 11/09/2022] Open
Abstract
Diffusion-weighted MRI (DWI) is often used to guide clinical interpretation of intraparenchymal brain lesions when there is suspicion for a cerebrovascular accident (CVA). Despite widespread evidence that imaging and patient parameters can influence diffusion-weighted measurements, such as apparent diffusion coefficient (ADC), there is little published data on such measurements for naturally occurring CVA in clinical cases in dogs. We describe a series of 22 presumed and confirmed spontaneous canine CVA with known time of clinical onset imaged on a single 3T magnet between 2011 and 2021. Median ADC values of < 1.0x10−3 mm2/s were seen in normal control tissues as well as within CVAs. Absolute and relative ADC values in CVAs were well-correlated (R2 = 0.82). Absolute ADC values < 1.0x10−3 mm2/s prevailed within ischemic CVAs, though there were exceptions, including some lesions of < 5 days age. Some lesions showed reduced absolute but not relative ADC values when compared to matched normal contralateral tissue. CVAs with large hemorrhagic components did not show restricted diffusion. Variation in the DWI sequence used impacted the ADC values obtained. Failure to identify a region of ADC < 1.0x10−3 mm2/s should not exclude CVA from the differential list when clinical suspicion is high.
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Affiliation(s)
- Elizabeth Boudreau
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
- *Correspondence: Elizabeth Boudreau
| | - Sharon C. Kerwin
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Emily B. DuPont
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Jonathan M. Levine
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - John F. Griffin
- Department of Large Animal Clinical Sciences, School of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
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29
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Kaiser EE, Waters ES, Yang X, Fagan MM, Scheulin KM, Sneed SE, Cheek SR, Jeon JH, Shin SK, Kinder HA, Kumar A, Platt SR, Duberstein KJ, Park HJ, Xie J, West FD. Tanshinone IIA-Loaded Nanoparticle and Neural Stem Cell Therapy Enhances Recovery in a Pig Ischemic Stroke Model. Stem Cells Transl Med 2022; 11:1061-1071. [PMID: 36124817 PMCID: PMC9585947 DOI: 10.1093/stcltm/szac062] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/17/2022] [Indexed: 12/30/2022] Open
Abstract
Induced pluripotent stem cell-derived neural stem cells (iNSCs) are a multimodal stroke therapeutic that possess neuroprotective, regenerative, and cell replacement capabilities post-ischemia. However, long-term engraftment and efficacy of iNSCs is limited by the cytotoxic microenvironment post-stroke. Tanshinone IIA (Tan IIA) is a therapeutic that demonstrates anti-inflammatory and antioxidative effects in rodent ischemic stroke models and stroke patients. Therefore, pretreatment with Tan IIA may create a microenvironment that is more conducive to the long-term survival of iNSCs. In this study, we evaluated the potential of Tan IIA drug-loaded nanoparticles (Tan IIA-NPs) to improve iNSC engraftment and efficacy, thus potentially leading to enhanced cellular, tissue, and functional recovery in a translational pig ischemic stroke model. Twenty-two pigs underwent middle cerebral artery occlusion (MCAO) and were randomly assigned to a PBS + PBS, PBS + iNSC, or Tan IIA-NP + iNSC treatment group. Magnetic resonance imaging (MRI), modified Rankin Scale neurological evaluation, and immunohistochemistry were performed over a 12-week study period. Immunohistochemistry indicated pretreatment with Tan IIA-NPs increased iNSC survivability. Furthermore, Tan IIA-NPs increased iNSC neuronal differentiation and decreased iNSC reactive astrocyte differentiation. Tan IIA-NP + iNSC treatment enhanced endogenous neuroprotective and regenerative activities by decreasing the intracerebral cellular immune response, preserving endogenous neurons, and increasing neuroblast formation. MRI assessments revealed Tan IIA-NP + iNSC treatment reduced lesion volumes and midline shift. Tissue preservation and recovery corresponded with significant improvements in neurological recovery. This study demonstrated pretreatment with Tan IIA-NPs increased iNSC engraftment, enhanced cellular and tissue recovery, and improved neurological function in a translational pig stroke model.
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Affiliation(s)
- Erin E Kaiser
- Regenerative Bioscience Center, Athens, GA, USA
- Biomedical and Health Sciences Institute, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
| | - Elizabeth S Waters
- Regenerative Bioscience Center, Athens, GA, USA
- Biomedical and Health Sciences Institute, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
- Environmental Health Science Department, College of Public Health, Athens, GA, USA
| | - Xueyuan Yang
- Chemistry Department, Franklin College of Arts and Sciences, Athens, GA, USA
| | - Madison M Fagan
- Regenerative Bioscience Center, Athens, GA, USA
- Biomedical and Health Sciences Institute, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
| | - Kelly M Scheulin
- Regenerative Bioscience Center, Athens, GA, USA
- Biomedical and Health Sciences Institute, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
| | - Sydney E Sneed
- Regenerative Bioscience Center, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
| | | | - Julie Heejin Jeon
- Nutritional Sciences Department, College of Family and Consumer Sciences, Athens, GA, USA
| | - Soo K Shin
- Regenerative Bioscience Center, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
- Small Animal Medicine and Surgery Department, College of Veterinary Medicine, Athens, GA, USA
| | - Holly A Kinder
- Regenerative Bioscience Center, Athens, GA, USA
- Biomedical and Health Sciences Institute, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
| | - Anil Kumar
- Chemistry Department, Franklin College of Arts and Sciences, Athens, GA, USA
| | - Simon R Platt
- Regenerative Bioscience Center, Athens, GA, USA
- Interdisciplinary Toxicology Program, College of Pharmacy, University of Georgia, Athens, GA, USA
| | - Kylee J Duberstein
- Regenerative Bioscience Center, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
| | - Hea Jin Park
- Nutritional Sciences Department, College of Family and Consumer Sciences, Athens, GA, USA
| | - Jin Xie
- Regenerative Bioscience Center, Athens, GA, USA
- Chemistry Department, Franklin College of Arts and Sciences, Athens, GA, USA
| | - Franklin D West
- Regenerative Bioscience Center, Athens, GA, USA
- Biomedical and Health Sciences Institute, Athens, GA, USA
- Animal and Dairy Science Department, College of Agricultural and Environmental Sciences, Athens, GA, USA
- Small Animal Medicine and Surgery Department, College of Veterinary Medicine, Athens, GA, USA
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30
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Eaton SL, Murdoch F, Rzechorzek NM, Thompson G, Hartley C, Blacklock BT, Proudfoot C, Lillico SG, Tennant P, Ritchie A, Nixon J, Brennan PM, Guido S, Mitchell NL, Palmer DN, Whitelaw CBA, Cooper JD, Wishart TM. Modelling Neurological Diseases in Large Animals: Criteria for Model Selection and Clinical Assessment. Cells 2022; 11:cells11172641. [PMID: 36078049 PMCID: PMC9454934 DOI: 10.3390/cells11172641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 11/16/2022] Open
Abstract
Issue: The impact of neurological disorders is recognised globally, with one in six people affected in their lifetime and few treatments to slow or halt disease progression. This is due in part to the increasing ageing population, and is confounded by the high failure rate of translation from rodent-derived therapeutics to clinically effective human neurological interventions. Improved translation is demonstrated using higher order mammals with more complex/comparable neuroanatomy. These animals effectually span this translational disparity and increase confidence in factors including routes of administration/dosing and ability to scale, such that potential therapeutics will have successful outcomes when moving to patients. Coupled with advancements in genetic engineering to produce genetically tailored models, livestock are increasingly being used to bridge this translational gap. Approach: In order to aid in standardising characterisation of such models, we provide comprehensive neurological assessment protocols designed to inform on neuroanatomical dysfunction and/or lesion(s) for large animal species. We also describe the applicability of these exams in different large animals to help provide a better understanding of the practicalities of cross species neurological disease modelling. Recommendation: We would encourage the use of these assessments as a reference framework to help standardise neurological clinical scoring of large animal models.
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Affiliation(s)
- Samantha L. Eaton
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
- Correspondence: (S.L.E.); (T.M.W.); Tel.: +44-(0)-131-651-9125 (S.L.E.); +44-(0)-131-651-9233 (T.M.W.)
| | - Fraser Murdoch
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Nina M. Rzechorzek
- Medical Research Council Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Gerard Thompson
- Centre for Clinical Brain Sciences, University of Edinburgh, Chancellor’s Building, 49 Little France Crescent, Edinburgh EH16 4SB, UK
- Department of Clinical Neurosciences, NHS Lothian, 50 Little France Crescent, Edinburgh EH16 4TJ, UK
| | - Claudia Hartley
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Benjamin Thomas Blacklock
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Chris Proudfoot
- The Large Animal Research & Imaging Facility, Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Simon G. Lillico
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Peter Tennant
- The Large Animal Research & Imaging Facility, Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Adrian Ritchie
- The Large Animal Research & Imaging Facility, Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - James Nixon
- The Large Animal Research & Imaging Facility, Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Paul M. Brennan
- Translational Neurosurgery, Centre for Clinical Brain Sciences, University of Edinburgh, Edinburgh EH16 4SB, UK
| | - Stefano Guido
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
- Bioresearch & Veterinary Services, University of Edinburgh, Chancellor’s Building, 49 Little France Crescent, Edinburgh EH16 4SB, UK
| | - Nadia L. Mitchell
- Faculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7647, New Zealand
| | - David N. Palmer
- Faculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7647, New Zealand
| | - C. Bruce A. Whitelaw
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
| | - Jonathan D. Cooper
- Departments of Pediatrics, Genetics, and Neurology, Washington University School of Medicine in St. Louis, 660 S Euclid Ave, St. Louis, MO 63110, USA
| | - Thomas M. Wishart
- Royal (Dick) School of Veterinary Studies and Roslin Institute, University of Edinburgh, Easter Bush Campus, Roslin, Midlothian EH25 9RG, UK
- Correspondence: (S.L.E.); (T.M.W.); Tel.: +44-(0)-131-651-9125 (S.L.E.); +44-(0)-131-651-9233 (T.M.W.)
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31
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Denecke KM, McBain CA, Hermes BG, Teertam SK, Farooqui M, Virumbrales-Muñoz M, Panackal J, Beebe DJ, Famakin B, Ayuso JM. Microfluidic Model to Evaluate Astrocyte Activation in Penumbral Region following Ischemic Stroke. Cells 2022; 11:cells11152356. [PMID: 35954200 PMCID: PMC9367413 DOI: 10.3390/cells11152356] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/25/2022] [Accepted: 07/28/2022] [Indexed: 11/16/2022] Open
Abstract
Stroke is one of the main causes of death in the US and post-stroke treatment options remain limited. Ischemic stroke is caused by a blood clot that compromises blood supply to the brain, rapidly leading to tissue death at the core of the infarcted area surrounded by a hypoxic and nutrient-starved region known as the penumbra. Recent evidence suggests that astrocytes in the penumbral region play a dual role in stroke response, promoting further neural and tissue damage or improving tissue repair depending on the microenvironment. Thus, astrocyte response in the hypoxic penumbra could promote tissue repair after stroke, salvaging neurons in the affected area and contributing to cognitive recovery. However, the complex microenvironment of ischemic stroke, characterized by gradients of hypoxia and nutrients, poses a unique challenge for traditional in vitro models, which in turn hinders the development of novel therapies. To address this challenge, we have developed a novel, polystyrene-based microfluidic device to model the necrotic and penumbral region induced by an ischemic stroke. We demonstrated that when subjected to hypoxia, and nutrient starvation, astrocytes within the penumbral region generated in the microdevice exhibited long-lasting, significantly altered signaling capacity including calcium signaling impairment.
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Affiliation(s)
- Kathryn M. Denecke
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (K.M.D.); (B.G.H.); (M.F.); (M.V.-M.); (D.J.B.)
- Department of Neurology, University of Wisconsin-Madison, Madison, WI 53705, USA; (S.K.T.); (J.P.)
| | - Catherine A. McBain
- Department of Dermatology, University of Wisconsin-Madison, Madison, WI 53705, USA;
| | - Brock G. Hermes
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (K.M.D.); (B.G.H.); (M.F.); (M.V.-M.); (D.J.B.)
| | - Sireesh Kumar Teertam
- Department of Neurology, University of Wisconsin-Madison, Madison, WI 53705, USA; (S.K.T.); (J.P.)
| | - Mehtab Farooqui
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (K.M.D.); (B.G.H.); (M.F.); (M.V.-M.); (D.J.B.)
| | - María Virumbrales-Muñoz
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (K.M.D.); (B.G.H.); (M.F.); (M.V.-M.); (D.J.B.)
| | - Jennifer Panackal
- Department of Neurology, University of Wisconsin-Madison, Madison, WI 53705, USA; (S.K.T.); (J.P.)
| | - David J. Beebe
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (K.M.D.); (B.G.H.); (M.F.); (M.V.-M.); (D.J.B.)
- UW Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Bolanle Famakin
- Department of Neurology, University of Wisconsin-Madison, Madison, WI 53705, USA; (S.K.T.); (J.P.)
- Correspondence: (B.F.); (J.M.A.)
| | - Jose M. Ayuso
- Department of Dermatology, University of Wisconsin-Madison, Madison, WI 53705, USA;
- UW Carbone Cancer Center, University of Wisconsin-Madison, Madison, WI 53705, USA
- Correspondence: (B.F.); (J.M.A.)
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