51
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Benson JC, Kallmes DF, Larson AS, Brinjikji W. Radiology-Pathology Correlations of Intracranial Clots: Current Theories, Clinical Applications, and Future Directions. AJNR Am J Neuroradiol 2021; 42:1558-1565. [PMID: 34301640 DOI: 10.3174/ajnr.a7249] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/06/2021] [Indexed: 11/07/2022]
Abstract
In recent years, there has been substantial progression in the field of stroke clot/thrombus imaging. Thrombus imaging aims to deduce the histologic composition of the clot through evaluation of various imaging characteristics. If the histology of a thrombus can be reliably determined by noninvasive imaging methods, critical information may be extrapolated about its expected response to treatment and about the patient's clinical outcome. Crucially, as we move into an era of stroke therapy individualization, determination of the histologic composition of a clot may be able to guide precise and targeted therapeutic effort. Most radiologists, however, remain largely unfamiliar with the topic of clot imaging. This article will review the current literature regarding clot imaging, including its histologic backdrop, the correlation of images with cellular components and treatment responsiveness, and future expectations.
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Affiliation(s)
- J C Benson
- From the Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota
| | - D F Kallmes
- From the Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota
| | - A S Larson
- From the Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota
| | - W Brinjikji
- From the Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota
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52
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Semerano A, Mamadou Z, Desilles JP, Sabben C, Bacigaluppi M, Piotin M, Mazighi M, Di Meglio L, Obadia M. Carotid webs in large vessel occlusion stroke: Clinical, radiological and thrombus histopathological findings. J Neurol Sci 2021; 427:117550. [PMID: 34175777 DOI: 10.1016/j.jns.2021.117550] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 05/21/2021] [Accepted: 06/18/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND Carotid webs are an under-recognized embolic source in patients with cryptogenic stroke. Limited resources currently exist to assist clinicians in stroke prevention for patients with symptomatic carotid webs (SCW). We aimed at analysing the clinical, radiological and procedural features of stroke patients with SCW undergoing endovascular thrombectomy (EVT), and to describe the histopathological composition of their occlusive thrombi. METHODS In a single-center observational study on consecutive patients with ischemic stroke treated by EVT, carotid web was defined symptomatic when it was ipsilateral to the ischemic lesion in a patient classified with stroke of otherwise undetermined etiology. Clinical, radiological and procedural data of patients with SCW were evaluated. Histopathological examination of the retrieved thrombi was performed. RESULTS Out of 1430 patients with large vessel occlusion stroke treated by EVT, 11(0.7%) were found to have a SCW. Patients with SCW had a median age of 47 years old (IQR 38-50), they were prevalently women (55%), mostly of African ethnicity (91%). Each of the 11 patients achieved successful angiographic reperfusion (mTICI 2b-3) after EVT. For secondary prevention, elective endovascular carotid stenting was performed in 5 (55%) patients, while 1 (9%) was treated by surgical endoarterectomy. Histological analysis of the retrieved thrombi performed in 4 patients showed a mixed composition with variable red blood cell content. CONCLUSIONS EVT is feasible in large vessel occlusion stroke related to SCW. Procedures of carotid revascularization appear to be feasible therapeutic options for secondary prevention. The histopathological analysis of cerebral thrombi may provide new insights on stroke pathogenesis in patients with SCW.
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Affiliation(s)
- Aurora Semerano
- Department of Neurology and Stroke Center, Rothschild Foundation Hospital, Paris, France; Department of Neurology and Neuroimmunology Unit, San Raffaele Hospital, Milan, Italy
| | - Zakaria Mamadou
- Department of Neurology and Stroke Center, Rothschild Foundation Hospital, Paris, France
| | - Jean Philippe Desilles
- Department of Interventional Neuroradiology, Rothschild Foundation Hospital, Paris, France; Université de Paris, Laboratory of Vascular Translational Science, U1148 Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | - Candice Sabben
- Department of Neurology and Stroke Center, Rothschild Foundation Hospital, Paris, France
| | - Marco Bacigaluppi
- Department of Neurology and Neuroimmunology Unit, San Raffaele Hospital, Milan, Italy
| | - Michel Piotin
- Department of Interventional Neuroradiology, Rothschild Foundation Hospital, Paris, France; Université de Paris, Laboratory of Vascular Translational Science, U1148 Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | - Mickael Mazighi
- Department of Interventional Neuroradiology, Rothschild Foundation Hospital, Paris, France; Université de Paris, Laboratory of Vascular Translational Science, U1148 Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | - Lucas Di Meglio
- Department of Interventional Neuroradiology, Rothschild Foundation Hospital, Paris, France; Université de Paris, Laboratory of Vascular Translational Science, U1148 Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | - Michael Obadia
- Department of Neurology and Stroke Center, Rothschild Foundation Hospital, Paris, France.
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53
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Kitano T, Hori Y, Okazaki S, Shimada Y, Iwamoto T, Kanki H, Sugiyama S, Sasaki T, Nakamura H, Oyama N, Hoshi T, Beck G, Takai H, Matsubara S, Mizuno H, Nishimura H, Tamaki R, Iida J, Iba J, Uno M, Kishima H, Fushimi H, Hattori S, Murayama S, Morii E, Sakaguchi M, Yagita Y, Shimazu T, Mochizuki H, Todo K. An Older Thrombus Delays Reperfusion after Mechanical Thrombectomy for Ischemic Stroke. Thromb Haemost 2021; 122:415-426. [PMID: 34077976 PMCID: PMC8899314 DOI: 10.1055/a-1522-4507] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Background
Thrombosis is a dynamic process, and a thrombus undergoes physical and biochemical changes that may alter its response to reperfusion therapy. This study assessed whether thrombus age influenced reperfusion quality and outcomes after mechanical thrombectomy for cerebral embolism.
Methods
We retrospectively evaluated 185 stroke patients and thrombi that were collected during mechanical thrombectomy at three stroke centers. Thrombi were pathologically classified as fresh or older based on their granulocytes' nuclear morphology and organization. Thrombus components were quantified, and the extent of NETosis (the process of neutrophil extracellular trap formation) was assessed using the density of citrullinated histone H3-positive cells. Baseline patient characteristics, thrombus features, endovascular procedures, and functional outcomes were compared according to thrombus age.
Results
Fresh thrombi were acquired from 43 patients, and older thrombi were acquired from 142 patients. Older thrombi had a lower erythrocyte content (
p
< 0.001) and higher extent of NETosis (
p
= 0.006). Restricted mean survival time analysis revealed that older thrombi were associated with longer puncture-to-reperfusion times (difference: 15.6 minutes longer for older thrombi,
p
= 0.002). This association remained significant even after adjustment for erythrocyte content and the extent of NETosis (adjusted difference: 10.8 minutes, 95% confidence interval [CI]: 0.6–21.1 minutes,
p
= 0.039). Compared with fresh thrombi, older thrombi required more device passes before reperfusion (
p
< 0.001) and were associated with poorer functional outcomes (adjusted common odds ratio: 0.49; 95% CI: 0.24–0.99).
Conclusion
An older thrombus delays reperfusion after mechanical thrombectomy for ischemic stroke. Adding therapies targeting thrombus maturation may improve the efficacy of mechanical thrombectomy.
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Affiliation(s)
- Takaya Kitano
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan.,Department of Stroke Medicine, Kawasaki Medical School, Okayama, Japan
| | - Yumiko Hori
- Department of Pathology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shuhei Okazaki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuki Shimada
- Department of Neurology, Osaka General Medical Center, Osaka, Japan
| | - Takanori Iwamoto
- Department of Stroke Medicine, Kawasaki Medical School, Okayama, Japan
| | - Hideaki Kanki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shintaro Sugiyama
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hajime Nakamura
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Naoki Oyama
- Department of Stroke Medicine, Kawasaki Medical School, Okayama, Japan
| | - Taku Hoshi
- Department of Neurology, Osaka General Medical Center, Osaka, Japan
| | - Goichi Beck
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroki Takai
- Department of Neurosurgery, Kawasaki Medical School, Okayama, Japan
| | - Shunji Matsubara
- Department of Neurosurgery, Kawasaki Medical School, Okayama, Japan
| | - Hiroya Mizuno
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | - Ryo Tamaki
- Department of Neurosurgery, Osaka General Medical Center, Osaka, Japan
| | - Junichi Iida
- Department of Neurosurgery, Osaka General Medical Center, Osaka, Japan
| | - Jiro Iba
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masaaki Uno
- Department of Neurosurgery, Kawasaki Medical School, Okayama, Japan
| | - Haruhiko Kishima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroaki Fushimi
- Department of Pathology, Osaka General Medical Center, Osaka, Japan
| | - Satoshi Hattori
- Department of Integrated Medicine, Biomedical Statistics, Osaka University Graduate School of Medicine, Osaka, Japan.,Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Shigeo Murayama
- Brain Bank for Neurodevelopmental, Neurological and Psychiatric Disorders, United Graduate School of Child Development, Osaka University, Osaka, Japan.,Department of Neurology and Neuropathology (the Brain Bank for Aging Research), Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan
| | - Eiichi Morii
- Department of Pathology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Manabu Sakaguchi
- Department of Neurology, Osaka General Medical Center, Osaka, Japan
| | - Yoshiki Yagita
- Department of Stroke Medicine, Kawasaki Medical School, Okayama, Japan
| | - Takeshi Shimazu
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hideki Mochizuki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kenichi Todo
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
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54
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Mühl-Benninghaus R, Dressler J, Haußmann A, Simgen A, Reith W, Yilmaz U. Utility of Hounsfield unit in the diagnosis of tandem occlusion in acute ischemic stroke. Neurol Sci 2021; 42:2391-2396. [PMID: 33052575 PMCID: PMC8159780 DOI: 10.1007/s10072-020-04798-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 10/05/2020] [Indexed: 12/22/2022]
Abstract
BACKGROUND Tandem occlusions can complicate medical and endovascular stroke treatment. To identify these occlusions, computed tomography angiography (CTA) represents the best imaging modality. However, CTA is still not initially performed in some patients not admitted directly to stroke centers. Early identification of an additional occlusion of the proximal extracranial internal carotid artery may improve the best suitable treatment strategy. The purpose of this study was to find a valuable threshold of thrombus attenuation in a non-contrast head CT (NCCT) scan to facilitate a safe diagnosis of tandem occlusions. MATERIALS AND METHODS Consecutive patients with acute middle cerebral artery (MCA) occlusions who underwent endovascular treatment were identified from our registry of neuroendovascular interventions. Thrombus attenuations of the affected MCA and contralateral vessel were measured by NCCT. To compare individual baseline blood attenuations, the difference between the thrombus attenuation and the contralateral MCA attenuation (referred to as ΔTM) was calculated. RESULTS Three hundred and twenty-five patients were included. There was a highly significant difference between mean thrombus attenuation with isolated MCA occlusion and additional extracranial internal carotid artery (ICA) occlusion (49.9 ± 8 vs. 56.2 ± 10 Hounsfield units (HU); P < 0.001). The area under the receiver operating characteristic curve of ΔTM was 0.72. The optimal threshold value was 13.5 HU, with a sensitivity of 67.5% and a specificity of 68.6%. CONCLUSION Despite a significant difference in thrombus attenuation in MCA occlusions with an additional extracranial ICA occlusion compared with isolated MCA occlusions, a relevant threshold of thrombus attenuation was not found.
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Affiliation(s)
- Ruben Mühl-Benninghaus
- Department of Neuroradiology, Saarland University Hospital, Kirrberger Straße, 66421 Homburg, Germany
| | - Julia Dressler
- Department of Neuroradiology, Saarland University Hospital, Kirrberger Straße, 66421 Homburg, Germany
| | - Alena Haußmann
- Department of Neuroradiology, Saarland University Hospital, Kirrberger Straße, 66421 Homburg, Germany
| | - Andreas Simgen
- Department of Neuroradiology, Saarland University Hospital, Kirrberger Straße, 66421 Homburg, Germany
| | - Wolfgang Reith
- Department of Neuroradiology, Saarland University Hospital, Kirrberger Straße, 66421 Homburg, Germany
| | - Umut Yilmaz
- Department of Neuroradiology, Saarland University Hospital, Kirrberger Straße, 66421 Homburg, Germany
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55
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Fereidoonnezhad B, Dwivedi A, Johnson S, McCarthy R, McGarry P. Blood clot fracture properties are dependent on red blood cell and fibrin content. Acta Biomater 2021; 127:213-228. [PMID: 33812070 DOI: 10.1016/j.actbio.2021.03.052] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 12/20/2022]
Abstract
Thrombus fragmentation during endovascular stroke treatment, such as mechanical thrombectomy, leads to downstream emboli, resulting in poor clinical outcomes. Clinical studies suggest that fragmentation risk is dependent on clot composition. This current study presents the first experimental characterization of the composition-dependent fracture properties of blood clots, in addition to the development of a predictive model for blood clot fragmentation. A bespoke experimental test-rig and compact tension specimen fabrication has been developed to measure fracture toughness of thrombus material. Fracture tests are performed on three physiologically relevant clot compositions: a high-fibrin clot made from a 5% haematocrit (H) blood mixture, a medium-fibrin clot made form a 20% H blood mixture, a low-fibrin clot made from a 40% H blood mixture. Fracture toughness is observed to significantly increase with increasing fibrin content, i.e. red blood cell-rich clots are more prone to tear during loading compared to the fibrin-rich clots. Results also reveal that the mechanical behaviour of clot analogues is significantly different in compression and tension. Finite element cohesive zone modelling of clot fracture experiments show that fibrin fibres become highly aligned in the direction perpendicular to crack propagation, providing a significant toughening mechanism. The results presented in this study provide the first characterization of the composition-dependent fracture behaviour of blood clots and are of key importance for development of next-generation thrombectomy devices and clinical strategies. STATEMENT OF SIGNIFICANCE: This study provides a characterisation of the composition-dependent fracture toughness of blood clots. This entails the development of novel experimental techniques for fabrication and testing of blood clot compact tension fracture specimens. The study also develops cohesive zone models of fracture initiation and propagation in blood clots. Results reveal that the fracture resistance of fibrin-rich clots is significantly higher than red blood cell rich clots. Simulations also reveal that stretching and realignment of the fibrin network should be included in blood clot material models in order to accurately replicate compression-tension asymmetry and fibrin enhanced fracture toughness. The results of this study have potentially important clinical implications in terms of clot fracture risk and secondary embolization during mechanical thrombectomy procedures.
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56
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Eto F, Koge J, Tanaka K, Yoshimoto T, Shiozawa M, Hatakeyama K, Toyoda K, Koga M. Atherosclerotic Components in Thrombi Retrieved by Thrombectomy for Internal Carotid Artery Occlusion Due to Large Artery Atherosclerosis: A Case Report. Front Neurol 2021; 12:670610. [PMID: 34122316 PMCID: PMC8194065 DOI: 10.3389/fneur.2021.670610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/20/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: The correlation between the composition of thrombi retrieved by mechanical thrombectomy (MT) and stroke etiology is inconclusive. We describe a case with atherosclerotic components in thrombi retrieved by MT for acute internal carotid artery (ICA) occlusion. Case Presentation: A 69-year-old man with acute onset of global aphasia and right hemiplegia was transferred to our institute. His baseline National Institutes of Health Stroke Scale score was 24. Magnetic resonance imaging demonstrated acute ischemic stroke in the left parietal lobe. Magnetic resonance angiography revealed occlusion of the left ICA. MT was attempted for acute left ICA occlusion. The initial angiography showed occlusion of the proximal ICA, while intraprocedural angiography revealed a large thrombus that extended from the cervical ICA to the intracranial ICA. Successful reperfusion was achieved by five passes using stent retrievers and an aspiration catheter. A large volume of red thrombus was retrieved by each pass. The final angiogram showed successful reperfusion with modified Thrombolysis in Cerebral Ischemia grade 2b and severe stenosis in the proximal ICA. Neck magnetic resonance imaging showed severe left ICA stenosis with a vulnerable plaque. Hence, his stroke etiology was determined as large artery atherosclerosis. Histopathological examination of the retrieved thrombi revealed atheromatous components, including cholesterol clefts, foam cells, and a necrotic core. Conclusions: Atherosclerotic components in retrieved thrombi might provide useful clues for diagnosing stroke pathogenesis. Further studies are warranted to clarify the utility of assessing atheromatous components in retrieved thrombi in diagnosing stroke etiology.
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Affiliation(s)
- Futoshi Eto
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.,Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Junpei Koge
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kanta Tanaka
- Division of Stroke Care Unit, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takeshi Yoshimoto
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masayuki Shiozawa
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kinta Hatakeyama
- Department of Pathology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kazunori Toyoda
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masatoshi Koga
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
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57
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Suissa L, Guigonis JM, Graslin F, Robinet-Borgomano E, Chau Y, Sedat J, Lindenthal S, Pourcher T. Combined Omic Analyzes of Cerebral Thrombi: A New Molecular Approach to Identify Cardioembolic Stroke Origin. Stroke 2021; 52:2892-2901. [PMID: 34015939 DOI: 10.1161/strokeaha.120.032129] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Laurent Suissa
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des sciences du vivant Fréderic Joliot, Commissariat à l'Energie Atomique et aux énergies alternatives (CEA), Université Côte d'Azur (UCA), Nice, France (L.S., J.-M.G., F.G., S.L., T.P.).,Stroke Unit (L.S.), University Hospital, Nice, France.,Stroke Unit, University Hospital, Marseille, France (L.S., E.R.-B.)
| | - Jean-Marie Guigonis
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des sciences du vivant Fréderic Joliot, Commissariat à l'Energie Atomique et aux énergies alternatives (CEA), Université Côte d'Azur (UCA), Nice, France (L.S., J.-M.G., F.G., S.L., T.P.)
| | - Fanny Graslin
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des sciences du vivant Fréderic Joliot, Commissariat à l'Energie Atomique et aux énergies alternatives (CEA), Université Côte d'Azur (UCA), Nice, France (L.S., J.-M.G., F.G., S.L., T.P.)
| | | | - Yves Chau
- Interventional Radiology Unit (Y.C., J.S.), University Hospital, Nice, France
| | - Jacques Sedat
- Interventional Radiology Unit (Y.C., J.S.), University Hospital, Nice, France
| | - Sabine Lindenthal
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des sciences du vivant Fréderic Joliot, Commissariat à l'Energie Atomique et aux énergies alternatives (CEA), Université Côte d'Azur (UCA), Nice, France (L.S., J.-M.G., F.G., S.L., T.P.)
| | - Thierry Pourcher
- Laboratory Transporter in Imaging and Radiotherapy in Oncology (TIRO), Direction de la Recherche Fondamentale (DRF), Institut des sciences du vivant Fréderic Joliot, Commissariat à l'Energie Atomique et aux énergies alternatives (CEA), Université Côte d'Azur (UCA), Nice, France (L.S., J.-M.G., F.G., S.L., T.P.)
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58
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Hernández-Fernández F, Ramos-Araque ME, Barbella-Aponte R, Molina-Nuevo JD, García-García J, Ayo-Martin O, Pedrosa-Jiménez MJ, López-Martinez L, Serrano-Heras G, Julia-Molla E, Segura T. Fibrin-Platelet Clots in Acute Ischemic Stroke. Predictors and Clinical Significance in a Mechanical Thrombectomy Series. Front Neurol 2021; 12:631343. [PMID: 33959088 PMCID: PMC8093432 DOI: 10.3389/fneur.2021.631343] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/09/2021] [Indexed: 12/03/2022] Open
Abstract
Introduction: The histological composition of the clot influences its mechanical properties, affects the efficacy of endovascular treatment (EVT), and could determine the clinical outcome of patients with acute ischemic stroke (AIS). Insights into clot composition may guide therapeutic decision-making prior to EVT and facilitate revascularization therapies. Material and Methods: Consecutive patients with AIS recorded in a prospective single-center reperfusion registry from December 2015 to December 2019 and treated with EVT were included. Baseline, laboratory [including post-procedural C-reactive protein (CRP)], radiological, and angiographic variables were analyzed. We aimed to study the relationship between histological composition of the clot with basal neuroimaging, laboratory markers, and recanalization technique. The secondary outcome was to analyze the correlation between clot composition and functional outcome at 3 months assessed by the modified Rankin scale (mRS). Results: From the study period, 360 AIS patients treated with EVT were included, of whom 189 (53%) fulfilled the inclusion criteria. One hundred (53%) cases of fibrin-predominant clot (FPC) were recorded. Full recanalization in FPC cases was achieved with higher probability when stent retrievers (SR) were selected as the first-line device (68.2%, p = 0.039). Patients with FPC had higher levels of CRP (p = 0.02), lower frequency of the hyperdense middle cerebral artery (HMCA) in baseline imaging (p = 0.039), and higher rates of mortality (p = 0.012). The multivariate analysis showed that the absence of HMCA (OR = 0.420; 95% CI 0.197-0.898; p = 0.025) and higher levels of CRP (OR = 1.01; 95% CI 1.003-1.019; p = 0.008) were predictors of FPC. Leukocytes and platelet counts were not associated with clot histology. Conclusions: The absence of HMCA and higher levels of CRP were markers of FPC. In patients with FPC, complete recanalization was most likely to be achieved when a SR was selected as first line of treatment. Mortality was higher in patients within this histologic group.
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Affiliation(s)
| | - María E. Ramos-Araque
- Department of Neurology, University Hospital of Salamanca, Biomedical Research Institute of Salamanca, Salamanca, Spain
- Department of Neurology, University Hospital of Valladolid, Valladolid, Spain
| | - Rosa Barbella-Aponte
- Department of Surgical Pathology, Hospital General Universitario de Albacete, Albacete, Spain
| | | | - Jorge García-García
- Department of Neurology, Hospital General Universitario de Albacete, Albacete, Spain
| | - Oscar Ayo-Martin
- Department of Neurology, Hospital General Universitario de Albacete, Albacete, Spain
| | | | - Lorena López-Martinez
- Department of Radiology, Hospital General Universitario de Albacete, Albacete, Spain
| | | | - Enrique Julia-Molla
- Department of Radiology, Hospital General Universitario de Albacete, Albacete, Spain
| | - Tomás Segura
- Department of Neurology, Hospital General Universitario de Albacete, Albacete, Spain
- Instituto de Investigación en Discapacidades Neurológicas (IDINE), Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
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59
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First approach to distinguish between cardiac and arteriosclerotic emboli of individual stroke patients applying the histological THROMBEX-classification rule. Sci Rep 2021; 11:8433. [PMID: 33875717 PMCID: PMC8055901 DOI: 10.1038/s41598-021-87584-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 03/30/2021] [Indexed: 12/16/2022] Open
Abstract
Endovascular treatment of strokes caused by large vessel occlusion enables the histopathological investigation of the retrieved embolus, possibly providing a novel opportunity to contribute to the diagnostic workup of etiology and to define secondary prevention measures in strokes with uncertain genesis. We aimed to develop a classification rule based on pathophysiological considerations and adjustment to reference thrombi for distinction between cardiac and arteriosclerotic emboli and to validate this classification rule on a patient cohort. From 125 patients with stroke due to large vessel occlusion and thrombectomy, 82 patients with known etiology (55 cardioembolic and 27 arterioembolic strokes) were included. The corresponding emboli were histologically evaluated by two raters blinded to the etiology of stroke by means of a novel classification rule. Presumed etiology and classification results were compared. Agreement concerning cardiac emboli was 72.2% (95% CI: 58.4–83.5) for rater I and 78.2% (95% CI: 65.0–88.2) for rater II. Agreement concerning arteriosclerotic emboli was 70.4% (95% CI: 49.8–86.3) for rater I and 74.1% (95% CI: 53.7–88.9) for rater II. Overall agreement reached 71.6% (95% CI: 60.5–81.1) for rater I and 76.8% (95% CI: 66.2–85.4) for rater II. Within the limits of generally restricted accuracy of histological evaluations, the classification rule differentiates between cardiac and arteriosclerotic emboli of acute ischemic stroke patients. Further improvement is needed to provide valuable complementary data for stroke etiology workup.
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60
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Abbasi M, Kvamme P, Layton KF, Hanel RA, Almekhlafi MA, Delgado JE, Pereira VM, Patel BM, Jahromi BS, Yoo AJ, Nogueira RG, Gounis MJ, Fitzgerald S, Mereuta OM, Dai D, Kadirvel R, Kallmes DF, Doyle KM, Savastano LE, Cloft HJ, Liu Y, Thacker IC, Aghaebrahim A, Sauvageau E, Demchuk AM, Kayan Y, Copelan AZ, Entwistle J, Nazari P, Cantrell DR, Bhuva P, Soomro J, Haussen DC, Al-Bayati A, Mohammaden M, Pisani L, Rodrigues G, Puri AS, Brinjikji W. Per pass analysis of thrombus composition retrieved by mechanical thrombectomy. Interv Neuroradiol 2021; 27:815-820. [PMID: 33823621 DOI: 10.1177/15910199211009119] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND AND AIM Mechanical thrombectomy (MT) for large vessel occlusion often requires multiple passes to retrieve the entire thrombus load. In this multi-institutional study we sought to examine the composition of thrombus fragments retrieved with each pass during MT. METHODS Patients who required multiple passes during thrombectomy were included. Histopathological evaluation of thrombus fragments retrieved from each pass was performed using Martius Scarlet Blue staining and the composition of each thrombus component including RBC, fibrin and platelet was determined using image analysis software. RESULTS 154 patients underwent MT and 868 passes was performed which resulted in 263 thrombus fragments retrieval. The analysis of thrombus components per pass showed higher RBC, lower fibrin and platelet composition in the pass 1 and 2 when compared to pass 3 and passes 4 or more combined (P values <0.05). There were no significant differences between thrombus fragments retrieved in pass 1 and pass 2 in terms of RBC, WBC, fibrin, and platelet composition (P values >0.05). Similarly, when each composition of thrombus fragments retrieved in pass 3 and passes 4 or more combined were compared with each other, no significant difference was noted (P values >0.05). CONCLUSION Our findings confirm that thrombus fragments retrieved with each pass differed significantly in histological content. Fragments in the first passes were associated with lower fibrin and platelet composition compared to fragments retrieved in passes three and four or higher. Also, thrombus fragments retrieved after failed pass were associated with higher fibrin and platelet components.
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Affiliation(s)
- Mehdi Abbasi
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
| | - Peter Kvamme
- Department of Radiology, University of Tennessee Medical Center, Knoxville, TN, USA
| | - Kennith F Layton
- Department of Radiology, Baylor University Medical Center, Dallas, TX, USA
| | - Ricardo A Hanel
- Department of Neurosurgery, Baptist Medical Center, Jacksonville, FL, USA
| | - Mohammed A Almekhlafi
- Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute and Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Josser E Delgado
- NeuroInterventional Radiology, Abbott Northwestern Hospital, Minneapolis, MN, USA
| | - Vitor M Pereira
- Departments of Medical Imaging and Surgery, Toronto Western Hospital, Toronto, ON, Canada
| | - Biraj M Patel
- Departments of Radiology and Neurosurgery, Carilion Clinic, Roanoke, VA, USA
| | - Babak S Jahromi
- Departments of Radiology and Neurosurgery, Northwestern University, Chicago, IL, USA
| | - Albert J Yoo
- Department of Neurointervention, Texas Stroke Institute, Plano, TX, USA
| | - Raul G Nogueira
- Department of Neurology, Grady Memorial Hospital and Emory University, Atlanta, GA, USA
| | - Matthew J Gounis
- Department of Radiology, New England Center for Stroke Research, University of Massachusetts, Worcester, MA, USA
| | - Seán Fitzgerald
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Physiology and CURAM-SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Oana M Mereuta
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Physiology and CURAM-SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Daying Dai
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | | | - David F Kallmes
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
| | - Karen M Doyle
- Department of Physiology and CURAM-SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Luis E Savastano
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
| | - Harry J Cloft
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
| | - Yang Liu
- Department of Radiology, Mayo Clinic, Rochester, MN, USA
| | - Ike C Thacker
- Department of Radiology, Baylor University Medical Center, Dallas, TX, USA
| | - Amin Aghaebrahim
- Department of Neurosurgery, Baptist Medical Center, Jacksonville, FL, USA
| | - Eric Sauvageau
- Department of Neurosurgery, Baptist Medical Center, Jacksonville, FL, USA
| | - Andrew M Demchuk
- Departments of Clinical Neurosciences, Radiology, and Community Health Sciences, Hotchkiss Brain Institute and Cumming School of Medicine, University of Calgary, Alberta, Canada
| | - Yasha Kayan
- NeuroInterventional Radiology, Abbott Northwestern Hospital, Minneapolis, MN, USA
| | - Alexander Z Copelan
- NeuroInterventional Radiology, Abbott Northwestern Hospital, Minneapolis, MN, USA
| | - John Entwistle
- Departments of Radiology and Neurosurgery, Carilion Clinic, Roanoke, VA, USA
| | - Pouya Nazari
- Departments of Radiology and Neurosurgery, Northwestern University, Chicago, IL, USA
| | | | - Parita Bhuva
- Department of Neurointervention, Texas Stroke Institute, Plano, TX, USA
| | - Jazba Soomro
- Department of Neurointervention, Texas Stroke Institute, Plano, TX, USA
| | - Diogo C Haussen
- Department of Neurology, Grady Memorial Hospital and Emory University, Atlanta, GA, USA
| | - Alhamza Al-Bayati
- Department of Neurology, Grady Memorial Hospital and Emory University, Atlanta, GA, USA
| | - Mahmoud Mohammaden
- Department of Neurology, Grady Memorial Hospital and Emory University, Atlanta, GA, USA
| | - Leonardo Pisani
- Department of Neurology, Grady Memorial Hospital and Emory University, Atlanta, GA, USA
| | - Gabriel Rodrigues
- Department of Neurology, Grady Memorial Hospital and Emory University, Atlanta, GA, USA
| | - Ajit S Puri
- Department of Radiology, New England Center for Stroke Research, University of Massachusetts, Worcester, MA, USA
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, Rochester, MN, USA.,Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
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Liu Y, Zheng Y, Reddy AS, Gebrezgiabhier D, Davis E, Cockrum J, Gemmete JJ, Chaudhary N, Griauzde JM, Pandey AS, Shih AJ, Savastano LE. Analysis of human emboli and thrombectomy forces in large-vessel occlusion stroke. J Neurosurg 2021; 134:893-901. [PMID: 32109875 DOI: 10.3171/2019.12.jns192187] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 12/02/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This study's purpose was to improve understanding of the forces driving the complex mechanical interaction between embolic material and current stroke thrombectomy devices by analyzing the histological composition and strength of emboli retrieved from patients and by evaluating the mechanical forces necessary for retrieval of such emboli in a middle cerebral artery (MCA) bifurcation model. METHODS Embolus analogs (EAs) were generated and embolized under physiological pressure and flow conditions in a glass tube model of the MCA. The forces involved in EA removal using conventional endovascular techniques were described, analyzed, and categorized. Then, 16 embolic specimens were retrieved from 11 stroke patients with large-vessel occlusions, and the tensile strength and response to stress were measured with a quasi-static uniaxial tensile test using a custom-made platform. Embolus compositions were analyzed and quantified by histology. RESULTS Uniaxial tension on the EAs led to deformation, elongation, thinning, fracture, and embolization. Uniaxial tensile testing of patients' emboli revealed similar soft-material behavior, including elongation under tension and differential fracture patterns. At the final fracture of the embolus (or dissociation), the amount of elongation, quantified as strain, ranged from 1.05 to 4.89 (2.41 ± 1.04 [mean ± SD]) and the embolus-generated force, quantified as stress, ranged from 63 to 2396 kPa (569 ± 695 kPa). The ultimate tensile strain of the emboli increased with a higher platelet percentage, and the ultimate tensile stress increased with a higher fibrin percentage and decreased with a higher red blood cell percentage. CONCLUSIONS Current thrombectomy devices remove emboli mostly by applying linear tensile forces, under which emboli elongate until dissociation. Embolus resistance to dissociation is determined by embolus strength, which significantly correlates with composition and varies within and among patients and within the same thrombus. The dynamic intravascular weakening of emboli during removal may lead to iatrogenic embolization.
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Affiliation(s)
- Yang Liu
- 1Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Yihao Zheng
- 2Department of Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts
| | | | | | - Evan Davis
- 1Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan
| | | | - Joseph J Gemmete
- Departments of3Neurosurgery and
- 4Radiology, University of Michigan, Ann Arbor, Michigan; and
| | - Neeraj Chaudhary
- Departments of3Neurosurgery and
- 4Radiology, University of Michigan, Ann Arbor, Michigan; and
| | | | | | - Albert J Shih
- 1Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Luis E Savastano
- Departments of3Neurosurgery and
- 5Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota
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62
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Abstract
Thrombi retrieved from patients with acute ischemic stroke are highly heterogeneous. Recent data suggest that thrombus composition may impact on mechanical thrombectomy, the number of recanalization manoeuvres, resistance to retrieval, and on thrombolytic potential. Our aim was to summarize evidence describing the impact of thrombus composition on efficacy of mechanical thrombectomy and thrombolysis in patients with acute ischemic stroke. The scoping review methodology guided by the Joanna Briggs Institute, an adaption of the Arksey and O'Malley, was followed. Comprehensive searches were conducted in MEDLINE, EMBASE, SCOPUS, and Web of Science. Articles were classified into 4 key themes: (1) composition of stroke thrombi, (2) thrombus composition and mechanical thrombectomy, (3) thrombus composition and thrombolytic therapy, and (4) novel imaging and endovascular approaches. Our search identified 698 articles published from 1987 to June 2020. Additional articles were extracted from reference lists of the selected articles. Overall, 95 topic-specific articles identified for inclusion published in 40 different journals were included. Reports showed that thrombus composition in stroke was highly heterogeneous, containing fibrin, platelets, red blood cells, VWF (von Willebrand Factor), and neutrophil extracellular traps. Thrombi could roughly be divided into fibrin- and red blood cell-rich clots. Fibrin-rich clots were associated with increased recanalization manoeuvres, longer procedure time, and less favorable clinical outcomes compared with red blood cell-rich clots. Advances in detection or treatment of thrombi that take into account clot heterogeneity may be able to improve future endovascular and thrombolytic treatment of stroke.
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Affiliation(s)
- Precious Jolugbo
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, United Kingdom
| | - Robert A S Ariëns
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, United Kingdom
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63
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Katsumata M, Ota T, Tsuruta W, Akiyama T, Sakai Y, Shigeta K, Kaneko J, Nogawa S, Ichijo M, Shiokawa Y, Hirano T. Comparisons of Characteristics and Outcomes after Mechanical Thrombectomy for Vertebrobasilar Occlusion with Cardioembolism or Atherosclerotic Brain Infarction: Data from the Tokyo-Tama-Registry of Acute Endovascular Thrombectomy (TREAT). World Neurosurg 2021; 148:e680-e688. [PMID: 33508493 DOI: 10.1016/j.wneu.2021.01.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Some reports suggest the efficacy of mechanical thrombectomy (MT) for acute vertebrobasilar artery (VBA) occlusion. The major causes of VBA occlusion include cardioembolism (CE) and large-artery atherosclerosis (LAA). However, the clinical characteristics of each cause remain unclear, and they might be important for decision making related to the indications and strategy of MT. OBJECTIVE This study aimed to compare functional outcomes and factors affecting outcomes between patients with CE and LAA with acute VBA occlusion. METHODS This was a retrospective and prospective observational study using data from TREAT (Tokyo-Tama-Registry of Acute Endovascular Thrombectomy), a multicenter registry of MT for acute large-vessel occlusion in the Tokyo metropolitan area. Patients with VBA occlusion classified into CE and LAA groups were analyzed. The primary outcome was a modified Rankin Scale score of 0-2 at 90 days. RESULTS Seventy-nine patients (57 with CE and 22 with LAA) were eligible from January 2015 to March 2020. Despite significantly shorter puncture-to-recanalization and onset-or-last-well-known-to-recanalization times in the CE group, the primary outcome was not significantly different between the 2 groups (CE, 31.6% vs. LAA, 45.5%; P = 0.248). In the subgroup analysis, patients with CE had worse clinical outcomes in the onset-or-last-well-known-to-door time ≥180 minutes, onset-or-last-well-known-to-door time ≥300 minutes, and low posterior circulation Alberta Stroke Program Early CT Score (≤7) subgroups. CONCLUSIONS Functional outcomes of VBA occlusion were not significantly different between CE and LAA. Based on the subgroup analysis, patients with CE might have poorer collateral status than do patients with LAA, and earlier recanalization might therefore be desired.
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Affiliation(s)
- Masahiro Katsumata
- Department of Neurology, Keio University School of Medicine, Tokyo, Japan.
| | - Takahiro Ota
- Department of Neurosurgery, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Wataro Tsuruta
- Department of Endovascular Neurosurgery, Toranomon Hospital, Tokyo, Japan
| | - Takenori Akiyama
- Department of Neurosurgery, Keio University School of Medicine, Tokyo, Japan
| | - Yu Sakai
- Department of Neurosurgery, Showa General Hospital, Tokyo, Japan
| | - Keigo Shigeta
- Department of Neurosurgery, National Hospital Organization Disaster Medical Center, Tokyo, Japan
| | - Junya Kaneko
- Department of Emergency and Critical Care Medicine, Nippon Medical School Tama Nagayama Hospital, Tokyo, Japan
| | - Shigeru Nogawa
- Department of Neurology, Tokai University Hachioji Hospital, Tokyo, Japan
| | - Masahiko Ichijo
- Department of Neurosurgery, Musashino Red Cross Hospital, Tokyo, Japan
| | | | - Teruyuki Hirano
- Stroke and Cerebrovascular Medicine, Kyorin University, Tokyo, Japan
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64
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Chen SH, Scott XO, Ferrer Marcelo Y, Almeida VW, Blackwelder PL, Yavagal DR, Peterson EC, Starke RM, Dietrich WD, Keane RW, de Rivero Vaccari JP. Netosis and Inflammasomes in Large Vessel Occlusion Thrombi. Front Pharmacol 2021; 11:607287. [PMID: 33569001 PMCID: PMC7868597 DOI: 10.3389/fphar.2020.607287] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 12/18/2020] [Indexed: 12/20/2022] Open
Abstract
The inflammatory response appears to play a critical role in clotting in which neutrophil extracellular traps (NETs) are the major drivers of thrombosis in acute ischemic stroke (AIS). The inflammasome is an innate immune complex involved in the activation of interleukin (IL)-18 and IL-1β through caspase-1, but whether the inflammasome plays a role in NETosis in AIS remains poorly understood. Here we assessed the levels of inflammasome signaling proteins in NETs and their association with clinical and procedural outcomes of mechanical thrombectomy for AIS. Electron microscopy and immunofluorescence indicate the presence of NETs in thrombi of patients with AIS. Moreover, the inflammasome signaling proteins caspase-1 and apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) were also present in clots associated with the marker of NETosis citrullinated histone 3H (CitH3). Analysis of protein levels by a simple plex assay show that caspase-1, ASC and interleukin (IL)-1β were significantly elevated in clots when compared to plasma of AIS patients and healthy controls, while IL-18 levels were lower. Moreover, multivariate analyses show that IL-1β levels in clots contribute to the number of passes to achieve complete recanalization, and that ASC, caspase-1 and IL-18 are significant contributors to time to recanalization. Thus, inflammasome proteins are elevated in NETs present in thrombi of patients with AIS that contribute to poor outcomes following stroke.
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Affiliation(s)
- Stephanie H Chen
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Xavier O Scott
- Department of Physiology and Biophysics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Yoandy Ferrer Marcelo
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Vania W Almeida
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Patricia L Blackwelder
- University of Miami Center for Advanced Microscopy (UMCAM) and Department of Chemistry, University of Miami, Coral Gables, FL, United States
| | - Dileep R Yavagal
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Eric C Peterson
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Robert M Starke
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - W Dalton Dietrich
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Robert W Keane
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States.,Department of Physiology and Biophysics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Juan Pablo de Rivero Vaccari
- Department of Neurological Surgery and the Miami Project to Cure Paralysis, University of Miami Miller School of Medicine, Miami, FL, United States.,Center for Cognitive Neuroscience and Aging University of Miami Miller School of Medicine, Miami, FL, United States
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65
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Hanning U, Sporns PB, Psychogios MN, Jeibmann A, Minnerup J, Gelderblom M, Schulte K, Nawabi J, Broocks G, Meyer L, Krähling H, Brehm A, Wildgruber M, Fiehler J, Kniep H. Imaging-based prediction of histological clot composition from admission CT imaging. J Neurointerv Surg 2021; 13:1053-1057. [PMID: 33483457 DOI: 10.1136/neurintsurg-2020-016774] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/14/2020] [Accepted: 12/23/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND Thrombus composition has been shown to be a major determinant of recanalization success and occurrence of complications in mechanical thrombectomy. The most important parameters of thrombus behavior during interventional procedures are relative fractions of fibrin and red blood cells (RBCs). We hypothesized that quantitative information from admission non-contrast CT (NCCT) and CT angiography (CTA) can be used for machine learning based prediction of thrombus composition. METHODS The analysis included 112 patients with occlusion of the carotid-T or middle cerebral artery who underwent thrombectomy. Thrombi samples were histologically analyzed and fractions of fibrin and RBCs were determined. Thrombi were semi-automatically delineated in CTA scans and NCCT scans were registered to the same space. Two regions of interest (ROIs) were defined for each thrombus: small-diameter ROIs capture vessel walls and thrombi, large-diameter ROIs reflect peri-vascular tissue responses. 4844 quantitative image markers were extracted and evaluated for their ability to predict thrombus composition using random forest algorithms in a nested fivefold cross validation. RESULTS Test set receiver operating characteristic area under the curve was 0.83 (95% CI 0.80 to 0.87) for differentiating RBC-rich thrombi and 0.84 (95% CI 0.80 to 0.87) for differentiating fibrin-rich thrombi. At maximum Youden-Index, RBC-rich thrombi were identified at 77% sensitivity and 74% specificity; for fibrin-rich thrombi the classifier reached 81% sensitivity at 73% specificity. CONCLUSIONS Machine learning based analysis of admission imaging allows for prediction of clot composition. Perspectively, such an approach could allow selection of clot-specific devices and retrieval procedures for personalized thrombectomy strategies.
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Affiliation(s)
- Uta Hanning
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Peter B Sporns
- Department of Neuroradiology, Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - Marios N Psychogios
- Department of Neuroradiology, Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - Astrid Jeibmann
- Institute of Neuropathology, University Hospital Münster, Münster, Germany
| | - Jens Minnerup
- Department of Neurology, University Hospital Münster, Münster, Germany
| | - Mathias Gelderblom
- Department of Neurology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Karolin Schulte
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Jawed Nawabi
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany.,Department of Radiology, Charité School of Medicine and University Hospital Berlin, Berlin, Germany
| | - Gabriel Broocks
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Lukas Meyer
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Hermann Krähling
- Institute of Neuropathology, University Hospital Münster, Münster, Germany
| | - Alex Brehm
- Department of Neuroradiology, Clinic of Radiology and Nuclear Medicine, University Hospital Basel, Basel, Switzerland
| | - Moritz Wildgruber
- Department of Radiology, Ludwig-Maximilians-University (LMU) Munich, Munich, Germany
| | - Jens Fiehler
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Helge Kniep
- Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg Eppendorf, Hamburg, Germany
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66
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Jooss NJ, Poulter NS. A large-scale histological investigation gives insight into the structure of ischemic stroke thrombi. Platelets 2021; 32:147-150. [PMID: 33427010 DOI: 10.1080/09537104.2020.1869713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Natalie J Jooss
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK.,Department of Biochemistry, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Natalie S Poulter
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, Birmingham, UK.,Centre of Membrane Proteins and Receptors (COMPARE), Universities of Birmingham and Nottingham, Midlands, UK
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67
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The potential value of histological analysis of thrombi extracted through mechanical thrombectomy during acute ischemic stroke treatment. Anatol J Cardiol 2021; 23:254-259. [PMID: 32352416 PMCID: PMC7219304 DOI: 10.14744/anatoljcardiol.2020.81342] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Studies on thrombus composition in acute stroke or acute myocardial infarction may help elucidate clot etiology and understand reperfusion success or failure. Moreover, such studies may certainly aid in the development of new technologies aimed at retrieving specific subtypes of thrombi; as a matter of fact, thrombus composition is suggested to influence the choice of techniques used during mechanical thrombectomy and plays a role in potential device and thrombus interaction. Over the years, histological analysis on the composition of thrombi causing ischemic stroke has proved to be a powerful tool to set standard prevention and treatment protocols. By isolating clot components, it is possible to provide a more accurate diagnosis and distinguish different stroke subtypes. Studies on histological clot composition support the theory that cryptogenic stroke can have a cardiogenic origin too. Components found in thrombi extracted from stroke patients support the importance of antithrombotic therapy in preventing and treating cerebral ischemia; however, more studies are needed to improve results in all types and subtypes of stroke. Hence, more research is required to further comprehend the role that platelets, fibrin, von Willebrand factor (vWF), and DNA play in relation to mechanical thrombectomy and recombinant tissue plasminogen activator (rtPA) resistance and to overcome certain limitations.
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68
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Osakada Y, Yamashita T, Morihara R, Matsumoto N, Sasaki R, Tadokoro K, Nomura E, Kawahara Y, Omote Y, Hishikawa N, Takemoto M, Ohta Y, Suruga Y, Nagase T, Takasugi Y, Inoue S, Watanabe K, Deguchi K, Tokunaga K, Sasada S, Kobayashi K, Maeoka R, Fukutome K, Takahashi K, Ohnishi H, Kuga Y, Ohnishi H, Abe K. 4-Hydroxyl-2-Nonenal Localized Expression Pattern in Retrieved Clots is Associated with Large Artery Atherosclerosis in Stroke Patients. J Stroke Cerebrovasc Dis 2021; 30:105583. [PMID: 33412400 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/09/2020] [Accepted: 12/22/2020] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVES The relationship between stroke etiology and clot pathology remains controversial. MATERIALS AND METHODS We performed histological analysis of clots retrieved from 52 acute ischemic stroke patients using hematoxylin and eosin staining and immunohistochemistry (CD42b and oxidative/hypoxic stress markers). The correlations between clot composition and the stroke etiological group (i.e., cardioembolic, cryptogenic, or large artery atherosclerosis) were assessed. RESULTS Of the 52 clots analyzed, there were no significant differences in histopathologic composition (e.g., white blood cells, red blood cells, fibrin, and platelets) between the 3 etiological groups (P = .92). By contrast, all large artery atherosclerosis clots showed a localized pattern with the oxidative stress marker 4-hydroxyl-2-nonenal (P < .01). From all 52 clots, 4-hydroxyl-2-nonenal expression patterns were localized in 28.8% of clots, diffuse in 57.7% of clots, and no signal in 13.5% of clots. CONCLUSIONS A localized pattern of 4-hydroxyl-2-nonenal staining may be a novel and effective marker for large artery atherosclerosis (sensitivity 100%, specificity 82%).
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Affiliation(s)
- Yosuke Osakada
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan; Department of Neurology, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan
| | - Toru Yamashita
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Ryuta Morihara
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Namiko Matsumoto
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Ryo Sasaki
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Koh Tadokoro
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Emi Nomura
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Yuko Kawahara
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Yoshio Omote
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan
| | - Nozomi Hishikawa
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Mami Takemoto
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
| | - Yasuyuki Ohta
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan
| | - Yasuki Suruga
- Department of Neurosurgery, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan.
| | - Takayuki Nagase
- Department of Neurosurgery, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan.
| | - Yuji Takasugi
- Department of Neurosurgery, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan
| | - Satoshi Inoue
- Department of Neurosurgery, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan
| | - Kyoichi Watanabe
- Department of Neurosurgery, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan.
| | - Kentaro Deguchi
- Department of Neurology, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan.
| | - Koji Tokunaga
- Department of Neurosurgery, Okayama City Hospital, 3-20-1 Kitanagase Omotecho, Kita-ku, Okayama 700-8557, Japan.
| | - Susumu Sasada
- Department of Neurosurgery, Tsuyama Chuo Hospital, 1756 Kawasaki Tsuyama, Okayama 708-0841, Japan
| | - Kazuki Kobayashi
- Department of Neurosurgery, Tsuyama Chuo Hospital, 1756 Kawasaki Tsuyama, Okayama 708-0841, Japan
| | - Ryosuke Maeoka
- Department of Neurosurgery, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan.
| | - Kenji Fukutome
- Department of Neurosurgery, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan.
| | - Kenkichi Takahashi
- Department of Neurosurgery, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan.
| | - Hiroyuki Ohnishi
- Department of Neurosurgery, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan.
| | - Yoshihiro Kuga
- Department of Neurosurgery, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan.
| | - Hideyuki Ohnishi
- Department of Neurosurgery, Ohnishi Neurological Center, 1661-1 Eigashima Okubocho, Akashi, Hyogo 674-0064, Japan.
| | - Koji Abe
- Department of Neurology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1 Shikatacho, Kita-ku, Okayama 700-8558, Japan.
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Fitzgerald S, Rossi R, Mereuta OM, Molina S, Okolo A, Douglas A, Jabrah D, Pandit A, McCarthy R, Gilvarry M, Ceder E, Dehlfors N, Dunker D, Nordanstig A, Redfors P, Jood K, Magoufis G, Psychogios K, Tsivgoulis G, Alderson J, O’Hare A, Power S, Brennan P, Nagy A, Vadász Á, Brinjikji W, Kallmes D, Szikora I, Tatlisumak T, Rentzos A, Thornton J, Doyle K. Large Artery Atherosclerotic Clots are Larger than Clots of other Stroke Etiologies and have Poorer Recanalization rates. J Stroke Cerebrovasc Dis 2021; 30:105463. [PMID: 33242780 PMCID: PMC7755299 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105463] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES There is a paucity of knowledge in the literature relating to the extent of clot burden and stroke etiology. In this study, we measured the Extracted Clot Area (ECA) retrieved during endovascular treatment (EVT) and investigated relationships with suspected etiology, administration of intravenous thrombolysis and recanalization. MATERIALS AND METHODS As part of the multi-institutional RESTORE registry, the ECA retrieved during mechanical thrombectomy was quantified using ImageJ. The effect of stroke etiology (Large-artery atherosclerosis (LAA), Cardioembolism, Cryptogenic and other) and recombinant tissue plasminogen activator (rtPA) on ECA and recanalization outcome (mTICI) was assessed. Successful recanalization was described as mTICI 2c-3. RESULTS A total of 550 patients who underwent EVT with any clot retrieved were included in the study. The ECA was significantly larger in the LAA group compared to all other etiologies. The average ECA size of each etiology was; LAA=109 mm2, Cardioembolic=52 mm2, Cryptogenic=47 mm2 and Other=52 mm2 (p=0.014*). LAA patients also had a significantly poorer rate of successful recanalization (mTICI 2c-3) compared to all other etiologies (p=0.003*). The administration of tPA was associated with a smaller ECA in both LAA (p=0.007*) and cardioembolic (p=0.035*) groups. CONCLUSION The ECA of LAA clots was double the size of all other etiologies and this is associated with a lower rate of successful recanalization in LAA stroke subtype. rtPA administration prior to thrombectomy was associated with reduced ECA in LAA and CE clots.
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Affiliation(s)
- Seán Fitzgerald
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Rosanna Rossi
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM–SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Oana Madalina Mereuta
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM–SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Sara Molina
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM–SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Adaobi Okolo
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Andrew Douglas
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Duaa Jabrah
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Abhay Pandit
- CÚRAM–SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Ray McCarthy
- Cerenovus, Galway Neuro Technology Centre, Galway, Ireland
| | | | - Erik Ceder
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Institute of Clinical Sciences, Department of Radiology, Sahlgrenska Academy at University of Gothenburg, Sweden
| | - Niclas Dehlfors
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Institute of Clinical Sciences, Department of Radiology, Sahlgrenska Academy at University of Gothenburg, Sweden
| | - Dennis Dunker
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Institute of Clinical Sciences, Department of Radiology, Sahlgrenska Academy at University of Gothenburg, Sweden
| | - Annika Nordanstig
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg and Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Petra Redfors
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg and Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Katarina Jood
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg and Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | | | - Klearchos Psychogios
- Metropolitan Hospital, Stroke Unit, Piraeus, Greece
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National & Kapodistrian University of Athens, Athens, Greece
| | - Georgios Tsivgoulis
- Second Department of Neurology, “Attikon” University Hospital, School of Medicine, National & Kapodistrian University of Athens, Athens, Greece
| | - Jack Alderson
- Department of Radiology, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Alan O’Hare
- Department of Radiology, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Sarah Power
- Department of Radiology, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - Paul Brennan
- Department of Radiology, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland
| | - András Nagy
- Department of Neurointerventions, National Institute of Neurosciences, Budapest, Hungary
| | - Ágnes Vadász
- Department of Neurointerventions, National Institute of Neurosciences, Budapest, Hungary
| | | | - David Kallmes
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Istvan Szikora
- Department of Neurointerventions, National Institute of Neurosciences, Budapest, Hungary
| | - Turgut Tatlisumak
- Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy at University of Gothenburg and Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Alexandros Rentzos
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Institute of Clinical Sciences, Department of Radiology, Sahlgrenska Academy at University of Gothenburg, Sweden
| | | | - Karen Doyle
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM–SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
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70
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Patel TR, Fricano S, Waqas M, Tso M, Dmytriw AA, Mokin M, Kolega J, Tomaszewski J, Levy EI, Davies JM, Snyder KV, Siddiqui AH, Tutino VM. Increased Perviousness on CT for Acute Ischemic Stroke is Associated with Fibrin/Platelet-Rich Clots. AJNR Am J Neuroradiol 2021; 42:57-64. [PMID: 33243895 PMCID: PMC7814781 DOI: 10.3174/ajnr.a6866] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/21/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Clot perviousness in acute ischemic stroke is a potential CT imaging biomarker for mechanical thrombectomy efficacy. We investigated the association among perviousness, clot cellular composition, and first-pass effect. MATERIALS AND METHODS In 40 mechanical thrombectomy-treated cases of acute ischemic stroke, we calculated perviousness as the difference in clot density on CT angiography and noncontrast CT. We assessed the proportion of fibrin/platelet aggregates, red blood cells, and white blood cells on clot histopathology. We tested for linear correlation between histologic components and perviousness, differences in components between "high" and "low" pervious clots defined by median perviousness, and differences in perviousness/composition between cases that did and did not achieve a first-pass effect. RESULTS Perviousness significantly positively and negatively correlated with the percentage of fibrin/platelet aggregates (P = .001) and the percentage of red blood cells (P = .001), respectively. Higher pervious clots had significantly greater fibrin/platelet aggregate content (P = .042). Cases that achieved a first-pass effect (n = 14) had lower perviousness, though not significantly (P = .055). The percentage of red blood cells was significantly higher (P = .028) and the percentage of fibrin/platelet aggregates was significantly lower (P = .016) in cases with a first-pass effect. There was no association between clot density on NCCT and clot composition or first-pass effect. Receiver operating characteristic analysis indicated that clot composition was the best predictor of first-pass effect (area under receiver operating characteristic curve: percentage of fibrin/platelet aggregates = 0.731, percentage of red blood cells = 0.706, perviousness = 0.668). CONCLUSIONS Clot perviousness on CT is associated with a higher percentage of fibrin/platelet aggregate content. Histologic data and, to a lesser degree, perviousness may have value in predicting first-pass outcome. Imaging metrics that more strongly reflect clot biology than perviousness may be needed to predict a first-pass effect with high accuracy.
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Affiliation(s)
- T R Patel
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Department of Mechanical and Aerospace Engineering (T.R.P., V.M.T.)
| | - S Fricano
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Pathology and Anatomical Sciences (S.F., J.K., J.T., V.M.T.)
| | - M Waqas
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
| | - M Tso
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
| | - A A Dmytriw
- Department of Medical Imaging (A.A.D.), University of Toronto, Toronto, Ontario, Canada
| | - M Mokin
- Department of Neurosurgery (M.M.), University of South Florida, Tampa, Florida
| | - J Kolega
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Pathology and Anatomical Sciences (S.F., J.K., J.T., V.M.T.)
| | - J Tomaszewski
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Pathology and Anatomical Sciences (S.F., J.K., J.T., V.M.T.)
| | - E I Levy
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
| | - J M Davies
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Biomedical Informatics (J.M.D.), University at Buffalo, Buffalo, New York
| | - K V Snyder
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
| | - A H Siddiqui
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
| | - V M Tutino
- From the Canon Stroke and Vascular Research Center (T.R.P., S.F., M.W., M.T., J.K., J.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Department of Mechanical and Aerospace Engineering (T.R.P., V.M.T.)
- Pathology and Anatomical Sciences (S.F., J.K., J.T., V.M.T.)
- Neurosurgery (M.W., M.T., E.I.L., J.M.D., K.V.S., A.H.S., V.M.T.)
- Biomedical Engineering (V.M.T.)
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71
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Weisel JW, Litvinov RI. Visualizing thrombosis to improve thrombus resolution. Res Pract Thromb Haemost 2021; 5:38-50. [PMID: 33537528 PMCID: PMC7845077 DOI: 10.1002/rth2.12469] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/05/2020] [Accepted: 11/15/2020] [Indexed: 12/12/2022] Open
Abstract
The severity, course, and outcomes of thrombosis are determined mainly by the size and location of the thrombus, but studying thrombus structure and composition has been an important but challenging task. The substantial progress in determination of thrombus morphology has become possible due to new intravital imaging methodologies in combination with mechanical thrombectomy, which allows extraction of a fresh thrombus from a patient followed by microscopy. Thrombi have been found to contain various structural forms of fibrin along with platelet aggregates, leukocytes, and red blood cells, many of which acquire a polyhedral shape (polyhedrocytes) as a result of intravital platelet-driven contraction. The relative volume fractions of thrombus components and their structural forms vary substantially, depending on the clinical and pathogenic characteristics. This review summarizes recent research that describes quantitative and qualitative morphologic characteristics of arterial and venous thrombi that are relevant for the pathogenesis, prophylaxis, diagnosis, and treatment of thrombosis.
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Affiliation(s)
- John W. Weisel
- Department of Cell and Developmental BiologyUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA
| | - Rustem I. Litvinov
- Department of Cell and Developmental BiologyUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA
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72
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Fitzgerald S, Rossi R, Mereuta OM, Jabrah D, Okolo A, Douglas A, Molina Gil S, Pandit A, McCarthy R, Gilvarry M, Dunker D, Nordanstig A, Ceder E, Redfors P, Jood K, Dehlfors N, Magoufis G, Tsivgoulis G, Brinjikji W, Kallmes DF, O'Hare A, Power S, Brennan P, Alderson J, Nagy A, Vadász Á, Psychogios K, Szikora I, Tatlisumak T, Rentzos A, Thornton J, Doyle KM. Per-pass analysis of acute ischemic stroke clots: impact of stroke etiology on extracted clot area and histological composition. J Neurointerv Surg 2020; 13:1111-1116. [PMID: 33298510 PMCID: PMC8606448 DOI: 10.1136/neurintsurg-2020-016966] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 01/09/2023]
Abstract
Background Initial studies investigating correlations between stroke etiology and clot composition are conflicting and do not account for clot size as determined by area. Radiological studies have shown that cardioembolic strokes are associated with shorter clot lengths and lower clot burden than non-cardioembolic clots. Objective To report the relationship between stroke etiology, extracted clot area, and histological composition at each procedural pass. Methods As part of the multi-institutional RESTORE Registry, the Martius Scarlett Blue stained histological composition and extracted clot area of 612 per-pass clots retrieved from 441 patients during mechanical thrombectomy procedures were quantified. Correlations with clinical and procedural details were investigated. Results Clot composition varied significantly with procedural passes; clots retrieved in earlier passes had higher red blood cell content (H4=11.644, p=0.020) and larger extracted clot area (H4=10.730, p=0.030). Later passes were associated with significantly higher fibrin (H4=12.935, p=0.012) and platelets/other (H4=15.977, p=0.003) content and smaller extracted clot area. Large artery atherosclerotic (LAA) clots were significantly larger in the extracted clot area and more red blood cell-rich than other etiologies in passes 1–3. Cardioembolic and cryptogenic clots had similar histological composition and extracted clot area across all procedural passes. Conclusion LAA clots are larger and associated with a large red blood cell-rich extracted clot area, suggesting soft thrombus material. Cardioembolic clots are smaller in the extracted clot area, consistent in composition and area across passes, and have higher fibrin and platelets/other content than LAA clots, making them stiffer clots. The per-pass histological composition and extracted clot area of cryptogenic clots are similar to those of cardioembolic clots, suggesting similar formation mechanisms.
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Affiliation(s)
- Seán Fitzgerald
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Rosanna Rossi
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM - SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Oana Madalina Mereuta
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM - SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Duaa Jabrah
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Adaobi Okolo
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
| | - Andrew Douglas
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM - SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Sara Molina Gil
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM - SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Abhay Pandit
- CÚRAM - SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Ray McCarthy
- Cerenovus, Galway Neuro Technology Centre, Johnson and Johnson Medical Devices, Galway, Ireland
| | - Michael Gilvarry
- Cerenovus, Galway Neuro Technology Centre, Johnson and Johnson Medical Devices, Galway, Ireland
| | - Dennis Dunker
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Radiology, University of Gothenburg Institute of Clinical Sciences, Göteborg, Sweden
| | - Annika Nordanstig
- Department of Neurology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Clinical Neuroscience, University of Gothenburg Institute of Neuroscience and Physiology, Göteborg, Sweden
| | - Erik Ceder
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Radiology, University of Gothenburg Institute of Clinical Sciences, Göteborg, Sweden
| | - Petra Redfors
- Department of Neurology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Clinical Neuroscience, University of Gothenburg Institute of Neuroscience and Physiology, Göteborg, Sweden
| | - Katarina Jood
- Department of Neurology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Clinical Neuroscience, University of Gothenburg Institute of Neuroscience and Physiology, Göteborg, Sweden
| | - Niclas Dehlfors
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Radiology, University of Gothenburg Institute of Clinical Sciences, Göteborg, Sweden
| | - Georgios Magoufis
- Department of Interventional Neuroradiology, Metropolitan Hospital Athens, Piraeus, Greece
| | - Georgios Tsivgoulis
- Second Department of Neurology, "Attikon" Hospital, School of Medicine, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | | | - David F Kallmes
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Alan O'Hare
- Interventional Neuroradiology Service, Department of Radiology, Beaumont Hospital, Dublin, Ireland
| | - Sarah Power
- Interventional Neuroradiology Service, Department of Radiology, Beaumont Hospital, Dublin, Ireland
| | - Paul Brennan
- Interventional Neuroradiology Service, Department of Radiology, Beaumont Hospital, Dublin, Ireland
| | - Jack Alderson
- Interventional Neuroradiology Service, Department of Radiology, Beaumont Hospital, Dublin, Ireland
| | - András Nagy
- Department of Neurointerventions, National Institute of Clinical Neurosciences, Budapest, Hungary
| | - Ágnes Vadász
- Department of Neurointerventions, National Institute of Clinical Neurosciences, Budapest, Hungary
| | - Klearchos Psychogios
- Department of Interventional Neuroradiology, Metropolitan Hospital Athens, Piraeus, Greece
- Second Department of Neurology, "Attikon" Hospital, School of Medicine, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
| | - Istvan Szikora
- Department of Neurointerventions, National Institute of Clinical Neurosciences, Budapest, Hungary
| | - Turgut Tatlisumak
- Department of Neurology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Clinical Neuroscience, University of Gothenburg Institute of Neuroscience and Physiology, Göteborg, Sweden
| | - Alexandros Rentzos
- Department of Interventional and Diagnostic Neuroradiology, Sahlgrenska University Hospital, Göteborg, Sweden
- Department of Radiology, University of Gothenburg Institute of Clinical Sciences, Göteborg, Sweden
| | - John Thornton
- Interventional Neuroradiology Service, Department of Radiology, Beaumont Hospital, Dublin, Ireland
| | - Karen M Doyle
- Department of Physiology, National University of Ireland Galway, Galway, Ireland
- CÚRAM - SFI Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
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Donnerstag F, Götz F, Dadak M, Raab P, Iglesias EC, Werlein C, Lanfermann H, Jonigk D. Interventional stroke treatment - Is it also safe for arteries? Looking at thrombectomy wall damage through clot histology. Interv Neuroradiol 2020; 27:404-410. [PMID: 33269973 DOI: 10.1177/1591019920976673] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE The aim of this study was to investigate whether morphological evidence of intracranial vascular injury can be found in the occluding thrombi of patients with ischemic stroke. METHODS From 2015 until 2018 specimens of thrombi from patients with large vessel occlusion treated either by stent-assisted aspiration thrombectomy (TE) or by aspiration thrombectomy were prospectively collected. Thrombus specimens were formalin-fixed, paraffin-embedded and stained. Architectural features, presence of parts of vessel wall or atheromatous material, organisation of the thrombi, technique and number of thrombectomy manoeuvers were evaluated. RESULTS Thrombus specimens from 302 patients were analyzed. 238 (80%) patients were treated with stent-assisted aspiration TE and 64 (20%) patients with aspiration TE only. 286 (95%) had fresh thrombi, 14 (4.6%) showed initial/complete thrombus organisation and multi-staged thrombi were found in 2 (<1%) patients. In 8 patients (2.6%) we found atypical thrombus content after a time interval longer 6 hours after onset and final thrombectomy manoeuvre: 4 with atheromatous material and 4 with parts of a vessel wall. In 1 patient with parts of vessel wall angiographically a dissection was detected. No parts of the vessel wall were found after sole aspiration thrombectomy. CONCLUSIONS The overall risk of arterial vessel wall injury aspiration thrombectomy was low in our study. Aspiration thrombectomy and the procedure related with a retrieving device together with an ischemia time longer than 6 hours may increase the risk of vessel injury through the thrombectomy procedure. Further investigations are necessary to elucidate the influence of the mentioned aspects.
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Affiliation(s)
- Frank Donnerstag
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Friedrich Götz
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Mete Dadak
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany.,Clinic of Diagnostic and Interventional Radiology and Neuroradiology, St. Vincenz-Hospital, Paderborn, Germany
| | - Peter Raab
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Enrico Calvino Iglesias
- Biomedical Research in End-stage and Obstructive Lung Disease Hannover (BREATH) of the German Center for Lung Research (DZL), Hannover, Germany
| | | | - Heinrich Lanfermann
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Danny Jonigk
- Biomedical Research in End-stage and Obstructive Lung Disease Hannover (BREATH) of the German Center for Lung Research (DZL), Hannover, Germany.,Institute for Pathology, Hannover Medical School, Hannover, Germany
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74
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Tosun H, Kamışlı S, Tecellioğlu M, Alan S, Tecellioğlu FS, Öztanır MN, Kablan Y. Red and White Thrombus Characteristics in Patients Undergoing Carotid Endarterectomy. J Stroke Cerebrovasc Dis 2020; 30:105451. [PMID: 33278805 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105451] [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: 05/14/2020] [Revised: 10/12/2020] [Accepted: 10/31/2020] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE The study aimed to compare the characteristics of red and white thrombi in patients undergoing carotid endarterectomy. MATERIAL AND METHODS The study was conducted in 81 patients with ischemic stroke who underwent carotid endarterectomy for carotid artery stenosis. Carotid plaques were graded by two pathologists. Thrombus materials were divided into two groups: white and red. The parameters of assessment were plaque rupture, lipid core, fibrous cap thickness, inflammation, intraplaque hemorrhage, calcification, necrotic core, and neovascularization. Normally distributed data were evaluated using Mann-Whitney U and Chi-squared tests. RESULTS The ratio of white and red thrombus was 19.8% and 80.2%, respectively. Lipid core, plaque rupture, necrotic core, neovascularization, intraplaque hemorrhage, obstruction, and inflammation were observed more in red thrombus, which were statistically significant. Calcification and fibrous cap thickness were not statistically significant in the two groups. Moreover, intimal smooth muscle cells were present in all thrombus types. CONCLUSION In our study, we found that red thrombi had more unstable characteristics than white thrombi. Thus, the risk for ischemic cerebrovascular events is more in red thrombi. However, this finding cannot be generalized due to the small number of patients in this study. Therefore, studies involving more patients are needed.
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Affiliation(s)
| | | | | | - Saadet Alan
- Turgut Özal Medical Center, Malatya, Turkey.
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75
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Ding YH, Abbasi M, Michalak G, Leng S, Dai D, Fitzgerald S, Kadirvel R, Kallmes DF, Brinjikji W. Characterization of thrombus composition with multimodality CT-based imaging: an in-vitro study. J Neurointerv Surg 2020; 13:738-740. [PMID: 33115814 DOI: 10.1136/neurintsurg-2020-016799] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 11/04/2022]
Abstract
BACKGROUND CT is the most commonly used imaging modality for acute ischemic stroke evaluation. There is growing interest to use pre-operative imaging to characterize clot composition in stroke. We performed an in-vitro study examining the ability of various CT techniques in differentiation between different clot types. METHODS Five clot types with varying fibrin and red blood cells (RBCs) densities (5% RBC and 95% fibrin; 25% RBC and 75% fibrin; 50% RBC and 50% fibrin; 75% RBC and 25% fibrin; 95% RBC and 5% fibrin) were prepared and scanned using various CT scanning protocols (single-energy, dual-energy, photon-counting detector CT, mixed images, and virtual monoenergetic images). Martius Scarlett Blue trichrome staining was performed to confirm the composition of each clot. Mean CT values of each type of clot under different scanning protocol were calculated and compared. RESULTS Mean CT values of the CT numbers in the five clot specimens for 5%, 25%, and 50% RBC clot were similar across modalities, and increased significantly for 75% and 95% RBC clots (P<0.0001). Mean CT values are highest in the Mono +50 keV images in each type of clot, and they were also significantly higher than all other imaging protocols (P<0.001). Dual-energy CT with Mono +50 keV images showed the greatest difference between attenuation in each type of clot. CONCLUSION Mono +50 keV dual-energy CT scan may be helpful for differentiating between RBC-rich and fibrin-rich thrombi seen in large-vessel occlusion patients.
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Affiliation(s)
- Yong-Hong Ding
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Mehdi Abbasi
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Shuai Leng
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Daying Dai
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Seán Fitzgerald
- CÚRAM-Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - Ram Kadirvel
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - David F Kallmes
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Waleed Brinjikji
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA .,Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA
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Khismatullin RR, Nagaswami C, Shakirova AZ, Vrtková A, Procházka V, Gumulec J, Mačák J, Litvinov RI, Weisel JW. Quantitative Morphology of Cerebral Thrombi Related to Intravital Contraction and Clinical Features of Ischemic Stroke. Stroke 2020; 51:3640-3650. [PMID: 33040705 DOI: 10.1161/strokeaha.120.031559] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND AND PURPOSE The purpose was to assess quantitatively and qualitatively the composition and structure of cerebral thrombi and correlate them with the signs of intravital clot contraction (retraction), as well as with etiology, severity, duration, and outcomes of acute ischemic stroke. METHODS We quantified high-resolution scanning electron micrographs of 41 cerebral thrombi for their detailed cellular and noncellular composition and analyzed histological images for the overall structure with the emphasis on red blood cell compression, fibrin age, and the signs of inflammation. RESULTS Cerebral thrombi were quite compact and had extremely low porosity. The prevailing cell type was polyhedral compressed erythrocytes (polyhedrocytes) in the core, and fibrin-platelet aggregates were concentrated at the periphery; both findings are indicative of intravital contraction of the thrombi. The content of polyhedrocytes directly correlated with the stroke severity. The prevalence of fibrin bundles was typical for more severe cases, while the content of fibrin sponge prevailed in cases with a more favorable course. The overall platelet content in cerebral thrombi was surprisingly small, while the higher content of platelet aggregates was a marker of stroke severity. Fibrillar types of fibrin prevailed in atherothrombogenic thrombi. Older fibrin prevailed in thrombi from the patients who received thrombolytics, and younger fibrin dominated in cardioembolic thrombi. Alternating layers of erythrocytes and fibrin mixed with platelets were common for thrombi from the patients with more favorable outcomes. Thrombi with a higher number of leukocytes were associated with fatal cases. CONCLUSIONS Most cerebral thrombi undergo intravital clot contraction (retraction) that may be of underestimated clinical importance. Despite the high variability of the composition and structure of cerebral thrombi, the content of certain types of blood cells and fibrin structures combined with the morphological signs of intravital contraction correlate with the clinical course and outcomes of acute ischemic stroke.
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Affiliation(s)
- Rafael R Khismatullin
- Department of General Pathology, Kazan State Medical University (R.R.K., A.Z.S.), Russian Federation.,Institute of Fundamental Medicine and Biology, Kazan Federal University (R.R.K., A.Z.S., R.I.L.), Russian Federation.,Department of Cell and Developmental Biology, University of Pennsylvania School of Medicine, Philadelphia (R.R.K., C.N., R.I.L., J.W.W.)
| | - Chandrasekaran Nagaswami
- Department of Cell and Developmental Biology, University of Pennsylvania School of Medicine, Philadelphia (R.R.K., C.N., R.I.L., J.W.W.)
| | - Asia Z Shakirova
- Department of General Pathology, Kazan State Medical University (R.R.K., A.Z.S.), Russian Federation.,Institute of Fundamental Medicine and Biology, Kazan Federal University (R.R.K., A.Z.S., R.I.L.), Russian Federation
| | - Adéla Vrtková
- Department of Applied Mathematics, VSB- Technical University of Ostrava, Czech Republic (A.V.)
| | - Václav Procházka
- Department of Radiology (V.P.), University Hospital Ostrava and Faculty of Medicine, University of Ostrava, Czech Republic
| | - Jaromír Gumulec
- Department of Hematooncology (J.G.), University Hospital Ostrava and Faculty of Medicine, University of Ostrava, Czech Republic
| | - Jiří Mačák
- Department of Pathology (J.M.), University Hospital Ostrava and Faculty of Medicine, University of Ostrava, Czech Republic
| | - Rustem I Litvinov
- Institute of Fundamental Medicine and Biology, Kazan Federal University (R.R.K., A.Z.S., R.I.L.), Russian Federation.,Department of Cell and Developmental Biology, University of Pennsylvania School of Medicine, Philadelphia (R.R.K., C.N., R.I.L., J.W.W.)
| | - John W Weisel
- Department of Cell and Developmental Biology, University of Pennsylvania School of Medicine, Philadelphia (R.R.K., C.N., R.I.L., J.W.W.)
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Essig F, Kollikowski AM, Pham M, Solymosi L, Stoll G, Haeusler KG, Kraft P, Schuhmann MK. Immunohistological Analysis of Neutrophils and Neutrophil Extracellular Traps in Human Thrombemboli Causing Acute Ischemic Stroke. Int J Mol Sci 2020; 21:ijms21197387. [PMID: 33036337 PMCID: PMC7582743 DOI: 10.3390/ijms21197387] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/02/2020] [Accepted: 10/04/2020] [Indexed: 12/28/2022] Open
Abstract
Ischemic stroke caused by thromboembolic occlusion of large cerebral arteries, such as the internal carotid (ICA) and/or the middle cerebral artery (MCA), is treated by mechanical thrombectomy (MT). MT allows salvage of the vessel-occluding thrombemboli, which most frequently originate from the left atrium or the left ventricle of the heart or from sites of plaque rupture within large arteries above the heart. Clot composition may influence the efficacy of (intravenous) thrombolysis and MT, respectively. We analyzed 37 human thrombemboli obtained from acute ischemic stroke patients during MT with special emphasis on histological staining of neutrophils and neutrophil extracellular traps (NETs). We found neutrophils as the main cellular component of cerebral thrombemboli but encountered considerable morphological heterogeneity. Neutrophils accumulated in the border region of fibrin-rich structures indicating possible interaction of neutrophils with distinct structural thrombembolus components. Web-like NETs were found in 35 of 37 thrombemboli in varying amounts. NETs were almost exclusively found within fibrin-rich areas. Importantly, stroke etiology, age and present oral anticoagulation was associated with morphological patterns and the amount of neutrophils. Correlation of histological data and imaging data revealed that relative Hounsfield units of cerebral thrombemboli positively correlated with the amount of red blood cells. In summary, our results demonstrate that neutrophils and NETs are substantial constituents of cerebral thrombemboli and contribute to their structural complexity.
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Affiliation(s)
- Fabian Essig
- Department of Neurology, University Hospital Würzburg, 97080 Würzburg, Germany; (F.E.); (G.S.); (K.G.H.); (P.K.)
| | - Alexander M. Kollikowski
- Department of Neuroradiology, University Hospital Würzburg, 97080 Würzburg, Germany; (A.M.K.); (M.P.); (L.S.)
| | - Mirko Pham
- Department of Neuroradiology, University Hospital Würzburg, 97080 Würzburg, Germany; (A.M.K.); (M.P.); (L.S.)
| | - László Solymosi
- Department of Neuroradiology, University Hospital Würzburg, 97080 Würzburg, Germany; (A.M.K.); (M.P.); (L.S.)
| | - Guido Stoll
- Department of Neurology, University Hospital Würzburg, 97080 Würzburg, Germany; (F.E.); (G.S.); (K.G.H.); (P.K.)
| | - Karl Georg Haeusler
- Department of Neurology, University Hospital Würzburg, 97080 Würzburg, Germany; (F.E.); (G.S.); (K.G.H.); (P.K.)
| | - Peter Kraft
- Department of Neurology, University Hospital Würzburg, 97080 Würzburg, Germany; (F.E.); (G.S.); (K.G.H.); (P.K.)
- Department of Neurology, Klinikum Main-Spessart, 97816 Lohr, Germany
| | - Michael K. Schuhmann
- Department of Neurology, University Hospital Würzburg, 97080 Würzburg, Germany; (F.E.); (G.S.); (K.G.H.); (P.K.)
- Correspondence: ; Tel.: +49-931-201-23653
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78
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Berndt M, Poppert H, Steiger K, Pelisek J, Oberdieck P, Maegerlein C, Zimmer C, Wunderlich S, Friedrich B, Boeckh-Behrens T, Ikenberg B. Thrombus Histology of Basilar Artery Occlusions : Are There Differences to the Anterior Circulation? Clin Neuroradiol 2020; 31:753-761. [PMID: 33006654 PMCID: PMC8463366 DOI: 10.1007/s00062-020-00964-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/05/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND For patients with acute vessel occlusions of the anterior circulation histopathology of retrieved cerebral thrombi has been reported to be associated to stroke etiology. Due to the relatively small incidence of posterior circulation stroke, exclusive histopathologic analyses are missing for this subgroup. The aim of the study was to investigate thrombus histology for patients with basilar artery occlusions and uncover differences to anterior circulation clots with respect to underlying etiology. METHODS A total of 59 basilar thrombi were collected during intracranial mechanical recanalization and quantitatively analyzed in terms of their relative fractions of the main constituents, e.g. fibrin/platelets (F/P), red (RBC) and white blood cells (WBC). Data were compared to histopathological analyses of 122 thrombi of the anterior circulation with respect to underlying pathogenesis. RESULTS The composition of basilar thrombi differed significantly to thrombi of the anterior circulation with an overall higher RBC amount (median fraction in % (interquartile range):0.48 (0.37-0.69) vs. 0.37 (0.28-0.50), p < 0.001) and lower F/P count (0.45 (0.21-0.58) vs. 0.57 (0.44-0.66), p < 0.001). Basilar thrombi composition did not differ between the different etiological stroke subgroups. CONCLUSION The results depict a differing thrombus composition of basilar thrombi in comparison to anterior circulation clots with an overall higher amount of RBC. This may reflect different pathophysiologic processes between anterior and posterior circulation thrombogenesis, e.g. a larger proportion of appositional thrombus growth in the posterior circulation.
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Affiliation(s)
- M Berndt
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany.
| | - H Poppert
- Helios Klinikum München West, Munich, Germany
- Department of Neurology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - K Steiger
- Institute of Pathology, School of Medicine, Technical University of Munich, Munich, Germany
| | - J Pelisek
- Department of Vascular and Endovascular Surgery, Klinikum rechts der School of Medicine, Technical University of Munich, Munich, Germany
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | | | - C Maegerlein
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
| | - C Zimmer
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
| | - S Wunderlich
- Department of Neurology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
| | - B Friedrich
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
| | - T Boeckh-Behrens
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine, Technical University of Munich, Munich, Germany
| | - B Ikenberg
- Department of Neurology, Klinikum rechts der Isar, School of Medicine, Technical University of Munich, Munich, Germany
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Kitano T, Sakaguchi M, Yamagami H, Ishikawa T, Ishibashi-Ueda H, Tanaka K, Okazaki S, Sasaki T, Kadono Y, Takagaki M, Nishida T, Nakamura H, Yanase M, Fukushima N, Shiozawa M, Toyoda K, Takahashi JC, Funatsu T, Ryu B, Yoshioka D, Toda K, Murayama S, Kawamata T, Kishima H, Sawa Y, Mochizuki H, Todo K. Mechanical thrombectomy in acute ischemic stroke patients with left ventricular assist device. J Neurol Sci 2020; 418:117142. [PMID: 32977225 DOI: 10.1016/j.jns.2020.117142] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/24/2020] [Accepted: 09/14/2020] [Indexed: 01/27/2023]
Abstract
OBJECTIVES As the number of patients with left ventricular assist device (LVAD) implantation has been increasing, treatment of LVAD-related ischemic stroke is becoming a critical issue. We sought to clarify the features of mechanical thrombectomy in LVAD-related stroke with large vessel occlusion. METHODS In a multi-center, retrospective case-control study, we compared 20 LVAD-related strokes with 33 non-LVAD strokes, all of which had large vessel occlusion in the anterior circulation treated with mechanical thrombectomy. A comparative histopathological examination of the retrieved thrombi was also performed. RESULTS Successful reperfusion was achieved in 75% of the LVAD-related strokes. The time from onset to reperfusion was similar to that of non-LVAD strokes, but the total number of device passes required for reperfusion (median, 2.5 versus 1, P = 0.01) and the incidences of post-procedural parenchymal and subarachnoid hemorrhage (25% versus 3%, P = 0.02 and 55% versus 15%, P = 0.01, respectively) were higher in LVAD-related strokes. Symptomatic intracranial hemorrhage occurred in 4 patients (20%) with LVAD-related strokes. The histopathological analysis revealed that the ratio of erythrocyte components was significantly lower in thrombi retrieved from patients with LVAD-related stroke than in those with non-LVAD stroke (19 ± 6% versus 41 ± 17%, P = 0.01). CONCLUSIONS Mechanical thrombectomy is feasible in patients with LVAD-related stroke. However, repetitive device passes are needed to achieve successful reperfusion mainly because of the structurally organized thrombi, and the higher risk of hemorrhagic complications should be considered, while offering this therapeutic alternative.
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Affiliation(s)
- Takaya Kitano
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Manabu Sakaguchi
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Yamagami
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Tatsuya Ishikawa
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | | | - Kanta Tanaka
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Shuhei Okazaki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tsutomu Sasaki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshinori Kadono
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masatoshi Takagaki
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takeo Nishida
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hajime Nakamura
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masanobu Yanase
- Department of Transplant Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Norihide Fukushima
- Department of Transplant Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Masayuki Shiozawa
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Kazunori Toyoda
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Jun C Takahashi
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Takayuki Funatsu
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Bikei Ryu
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Daisuke Yoshioka
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koichi Toda
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Shigeo Murayama
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takakazu Kawamata
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Haruhiko Kishima
- Department of Neurosurgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshiki Sawa
- Department of Cardiovascular Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hideki Mochizuki
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kenichi Todo
- Department of Neurology, Osaka University Graduate School of Medicine, Osaka, Japan.
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80
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Wu BC, Hu MH, Wang V. The resolution of carotid arterial thrombus by oral anticoagulation after IV thrombolysis for chemotherapy-induced stroke: A case report. Medicine (Baltimore) 2020; 99:e21922. [PMID: 32871929 PMCID: PMC7458174 DOI: 10.1097/md.0000000000021922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE Cancer-related stroke has been regarded as an emerging subtype of ischemic event. Acute treatment for this subtype may include the antiplatelet agents, anticoagulants, or endovascular intervention. PATIENT CONCERNS A 63-year-old woman with sudden-onset right hemiparesis and conscious change was sent to our emergency department. The patient had underlying sigmoid adenocarcinoma and received chemotherapy FOLFIRI (FOL, folinic acid; F, fluorouracil; and IRI, irinotecan) with targeted therapy cetuximab following lower anterior resection since the diagnosis was made. DIAGNOSES Brain magnetic resonance angiography revealed a filling defect in left carotid bulb, and neurosonography showed a thick atherosclerotic plaque (size 4.9 mm) in the left internal carotid artery on day 5 after the onset of stroke. INTERVENTIONS During the first three hours after onset, administration of IV tissue plasminogen activator did not resolve the thrombus. Dabigatran (110 mg bid) started on day 7. OUTCOMES The atherosclerotic plaque dissolved on day 24. The patient recovered her muscle strength but still had nonfluent speech in mild extent. LESSONS Thrombolytic and anticoagulant medications in this patient suggested the thrombus formation with fibrin-rich content which may be attributable to both cancer and chemotherapy. Dabigatran, an oral anticoagulant, had a benefit for this subtype of ischemic stroke among patients with cancer.
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Affiliation(s)
- Bo-Chang Wu
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City
| | - Ming-Hung Hu
- Division of Hematology and Oncology, Department of Medicine, Taipei Municipal Wangfang Hospital
- Taipei Cancer Center, Taipei Medical University, Taipei
| | - Vinchi Wang
- School of Medicine, College of Medicine, Fu-Jen Catholic University, New Taipei City
- Department of Neurology, Cardinal Tien Hospital
- Medical Quality Management Center, Cardinal Tien Hospital, New Taipei City, Taiwan
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81
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Liu Y, Reddy AS, Cockrum J, Ajulufoh MC, Zheng Y, Shih AJ, Pandey AS, Savastano LE. Standardized Fabrication Method of Human-Derived Emboli with Histologic and Mechanical Quantification for Stroke Research. J Stroke Cerebrovasc Dis 2020; 29:105205. [PMID: 33066901 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105205] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 07/01/2020] [Accepted: 07/23/2020] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND As access to patient emboli is limited, embolus analogs (EAs) have become critical to the research of large vessel occlusion (LVO) stroke and the development of thrombectomy technology. To date, techniques for fabricating standardized human blood-derived EAs are limited in the variety of compositions, and the mechanical properties relevant to thrombectomy are not quantified. METHODS EAs were made by mixing human banked red blood cells (RBCs), plasma, and platelet concentrate in 10 different volumetric percentage combinations to mimic the broad range of patient emboli causing LVO strokes. The samples underwent histologic analysis and tensile testing to mimic the pulling action of thrombectomy devices, and were compared to patient emboli. RESULTS EAs had histologic compositions of 0-96% RBCs, 0.78%-92% fibrin, and 2.1%-22% platelets, which can be correlated with the ingredients using a regression model. At fracture, EAs elongated from 81% to 136%, and the ultimate tensile stress ranged from 16 to 949 kPa. These EAs' histologic compositions and tensile properties showed great similarity to those of emboli retrieved from LVO stroke patients, indicating the validity of such EA fabrication methods. EAs with lower RBC and higher fibrin contents are more extensible and can withstand higher tensile stress. CONCLUSIONS EAs fabricated and tested using the proposed new methods provide a platform for stroke research and pre-clinical development of thrombectomy devices.
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Affiliation(s)
- Yang Liu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA.
| | - Adithya S Reddy
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.
| | - Joshua Cockrum
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.
| | | | - Yihao Zheng
- Mechanical Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA.
| | - Albert J Shih
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, USA.
| | - Aditya S Pandey
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.
| | - Luis E Savastano
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA; Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA.
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82
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Liao Y, Guan M, Liang D, Shi Y, Liu J, Zeng X, Huang S, Xie X, Yuan D, Qiao H, Huang L. Differences in Pathological Composition Among Large Artery Occlusion Cerebral Thrombi, Valvular Heart Disease Atrial Thrombi and Carotid Endarterectomy Plaques. Front Neurol 2020; 11:811. [PMID: 32849244 PMCID: PMC7427050 DOI: 10.3389/fneur.2020.00811] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/29/2020] [Indexed: 12/26/2022] Open
Abstract
Background and Purpose: Acute ischemic stroke (AIS) with large artery occlusion (LAO) may lead to severe disability or death if not promptly treated. To determine the source of cerebral artery occlusion thrombosis, we studied the pathological components of cerebral artery thrombosis with different etiological classifications to guide clinical formulation of preventive treatment. Materials and Methods: Eighty-eight thrombi from AIS patients with LAO, 12 atrial thrombi from patients with valvular heart disease (VHD), and 11 plaques obtained by carotid endarterectomy (CEA) from patients with carotid artery stenosis were included in this retrospective study. The hematoxylin and eosin–stained specimens were quantitatively analyzed for erythrocytes, white blood cells (WBCs) and fibrin; platelets were shown by immunohistochemistry for CD31. Results: The thrombi of VHD showed the highest percentage of fibrin, followed by those of cardioembolism (CE) and stroke of undetermined etiology (SUE), and these values were higher than those of the other groups. Plaques obtained by CEA showed the highest erythrocyte number, followed by the large artery atherosclerosis (LAA) thrombi, and showed significantly noticeable differences between other stroke subtypes. The proportions of fibrin and erythrocytes in the thrombi of CE and SUE were most similar to those in the thrombi of VHD, and the LAA thrombi were the closest to those obtained by CEA. CE thrombi and CEA plaques had a higher percentage of WBCs than thrombi of other stroke thrombus subtypes and VHD. Conclusions: CE and most cryptogenic thrombi may originate from the heart, and the formation of carotid atherosclerotic plaques may be related to atherosclerotic cerebral embolism. Inflammation may be involved in their formation.
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Affiliation(s)
- Yu Liao
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China.,Department of Pathology, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Min Guan
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Dan Liang
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Yingying Shi
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Jialin Liu
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Xiuli Zeng
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Shengming Huang
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Xiaomei Xie
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Dingxin Yuan
- Department of Neurology, Beijiao Hospital, Foshan, China
| | - Hongyu Qiao
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Li'an Huang
- Department of Neurology, Clinical Neuroscience Institute, The First Affiliated Hospital, Jinan University, Guangzhou, China
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83
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A Convolutional Neural Network for Anterior Intra-Arterial Thrombus Detection and Segmentation on Non-Contrast Computed Tomography of Patients with Acute Ischemic Stroke. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10144861] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The aim of this study was to develop a convolutional neural network (CNN) that automatically detects and segments intra-arterial thrombi on baseline non-contrast computed tomography (NCCT) scans. We retrospectively collected computed tomography (CT)-scans of patients with an anterior circulation large vessel occlusion (LVO) from the Multicenter Randomized Clinical Trial of Endovascular Treatment for Acute Ischemic Stroke in the Netherlands trial, both for training (n = 86) and validation (n = 43). For testing we included patients with (n = 58) and without (n = 45) an LVO from our comprehensive stroke center. Ground truth was established by consensus between two experts using both CT angiography and NCCT. We evaluated the CNN for correct identification of a thrombus, its location and thrombus segmentation and compared these with the results of a neurologist in training and expert neuroradiologist. Sensitivity of the CNN thrombus detection was 0.86, vs. 0.95 and 0.79 for the neuroradiologists. Specificity was 0.65 for the network vs. 0.58 and 0.82 for the neuroradiologists. The CNN correctly identified the location of the thrombus in 79% of the cases, compared to 81% and 77% for the neuroradiologists. The sensitivity and specificity for thrombus identification and the rate for correct thrombus location assessment by the CNN were similar to those of expert neuroradiologists.
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84
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Rowlands GW, Antaki JF. High-speed visualization of ingested, ejected, adherent, and disintegrated thrombus in contemporary ventricular assist devices. Artif Organs 2020; 44:E459-E469. [PMID: 32530104 DOI: 10.1111/aor.13753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/31/2020] [Accepted: 06/04/2020] [Indexed: 01/01/2023]
Abstract
Biocompatibility of ventricular assist devices (VADs) has been steadily improving, yet the rate of neurological events remains unacceptably high. Recent speculation for elevated stroke rates centers on ingestion of thrombi originating upstream of the pump, such as in the ventricle or left atrial appendage. These thrombi may be ejected by the VAD or become deposited within the blood flow pathway, presenting serious complications to the patient. This study was performed to visualize and quantify the degree of disruption, adherence, and disintegration of thrombi that are ingested by the three most implanted VADs: the HeartMate II, HeartMate 3, and HVAD. Clot analogs of varying microstructure compositions (red, white) and sizes (0.5, 1, 2 cm3 ) were synthesized in vitro based on clinical explant data. These were introduced individually into an in vitro flow loop with a transparent replica of the HMII, HM3, and HVAD operated at nominal steady flow (2.3-4.0 L/min). High-speed videography (up to 10 000 fps) revealed the ingestion, disruption, ejection, and adherence of thrombus fragments. Thromboemboli of varying compositions and sizes were observed mechanically attaching to components in all 3 VAD models. In some instances, ingested thrombi physically obstructed portions of the blood flow path; 18% (3 of 17 total) of red thrombi adhered to the inflow straightener of the transparent HMII. In the HVAD model, fewer than 4% of clots were adherent or trapped within the pump, irrespective of microstructure or initial volume. In comparison, 100% (4 of 4 total) of 1-cm3 white (fibrin) clots became lodged within the transparent HM3 while, in contrast, less than 5% of macerated red clots (3 of 63 total) of the same volume were adherent inside the pump. A significant proportion of ingested thrombi were macerated into infinitesimal fragments; 84% and 74% of 2-cm3 red thrombi in the HVAD and HM3 models, respectively, were found to have disintegrated upon ingestion. However, large emboli were also discharged from both centrifugal VADs; these fragments, ranging from 0.01 to 0.29 cm3 regardless of microstructure and original volume, may be capable of occluding an intracranial vessel. Therefore, ingested thrombus may explain, in part, elevated stroke rates in contemporary blood pumps in the absence of adherent pump thrombosis.
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Affiliation(s)
- Grant W Rowlands
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
| | - James F Antaki
- Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY, USA
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85
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Stroke Etiology and Thrombus Computed Tomography Characteristics in Patients With Acute Ischemic Stroke. Stroke 2020; 51:1727-1735. [DOI: 10.1161/strokeaha.119.027749] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Purpose—
If a relationship between stroke etiology and thrombus computed tomography characteristics exists, assessing these characteristics in clinical practice could serve as a useful additional diagnostic tool for the identification of stroke subtype. Our purpose was to study the association of stroke etiology and thrombus computed tomography characteristics in patients with acute ischemic stroke due to a large vessel occlusion.
Methods—
For 1429 consecutive patients enrolled in the MR CLEAN Registry, we determined stroke cause as defined by the TOAST (Trial of ORG 10172 in Acute Stroke Treatment) criteria. The association of stroke etiology with the hyperdense artery sign, clot burden score, and thrombus location was estimated with univariable and multivariable binary and ordinal logistic regression. Additionally, for 367 patients with available thin-section imaging, we assessed the association of stroke etiology with absolute and relative thrombus attenuation, distance from internal carotid artery-terminus to thrombus, thrombus length, and thrombus attenuation increase with univariable and multivariable linear regression.
Results—
Compared with cardioembolic strokes, noncardioembolic strokes were associated with presence of hyperdense artery sign (odds ratio, 2.2 [95% CI, 1.6–3.0]), lower clot burden score (common odds ratio, 0.4 [95% CI, 0.3–0.6]), shift towards a more proximal thrombus location (common odds ratio, 0.2 [95% CI, 0.2–0.3]), higher absolute thrombus attenuation (β, 3.6 [95% CI, 0.9–6.4]), decrease in distance from the ICA-terminus (β, −5.7 [95% CI, −8.3 to −3.0]), and longer thrombi (β, 8.6 [95% CI, 6.5−10.7]), based on univariable analysis. Thrombus characteristics of strokes with undetermined cause were similar to those of cardioembolic strokes.
Conclusions—
Thrombus computed tomography characteristics of cardioembolic stroke are distinct from those of noncardioembolic stroke. Additionally, our study supports the general hypothesis that many cryptogenic strokes have a cardioembolic cause. Further research should focus on the use of thrombus computed tomography characteristics as a diagnostic tool for stroke cause in clinical practice.
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86
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Novotny J, Oberdieck P, Titova A, Pelisek J, Chandraratne S, Nicol P, Hapfelmeier A, Joner M, Maegdefessel L, Poppert H, Pircher J, Massberg S, Friedrich B, Zimmer C, Schulz C, Boeckh-Behrens T. Thrombus NET content is associated with clinical outcome in stroke and myocardial infarction. Neurology 2020; 94:e2346-e2360. [PMID: 32434865 DOI: 10.1212/wnl.0000000000009532] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 01/07/2020] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVE To investigate whether immune cell composition and content of neutrophil extracellular traps (NETs) in relation to clinical outcome are different between acute ischemic stroke (AIS) and acute myocardial infarction (AMI), we performed histologic analysis and correlated results with clinical and procedural parameters. METHODS We retrieved thrombi from patients with AIS (n = 71) and AMI (n = 72) during endovascular arterial recanalization and analyzed their immune cell composition and NET content by immunohistology. We then associated thrombus composition with procedural parameters and outcome in AIS and with cardiac function in patients with AMI. Furthermore, we compared AIS thrombi with AMI thrombi and differentiated Trial of Org 10172 in Acute Stroke Treatment classifications to address potential differences in thrombus pathogenesis. RESULTS Amounts of leukocytes (p = 0.133) and neutrophils (p = 0.56) were similar between AIS and AMI thrombi. Monocytes (p = 0.0052), eosinophils (p < 0.0001), B cells (p < 0.0001), and T cells (p < 0.0001) were more abundant in stroke compared with AMI thrombi. NETs were present in 100% of patients with AIS and 20.8% of patients with AMI. Their abundance in thrombi was associated with poor outcome scores in patients with AIS and with reduced ejection fraction in patients with AMI. CONCLUSION In our detailed histologic analysis of arterial thrombi, thrombus composition and especially abundance of leukocyte subsets differed between patients with AIS and AMI. The presence and amount of NETs were associated with patients' outcome after AIS and AMI, supporting a critical impact of NETs on thrombus stability in both conditions.
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Affiliation(s)
- Julia Novotny
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Paul Oberdieck
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Anna Titova
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Jaroslav Pelisek
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Sue Chandraratne
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Philipp Nicol
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Alexander Hapfelmeier
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Michael Joner
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Lars Maegdefessel
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Holger Poppert
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Joachim Pircher
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Steffen Massberg
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Benjamin Friedrich
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Claus Zimmer
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany
| | - Christian Schulz
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany.
| | - Tobias Boeckh-Behrens
- From the Medizinische Klinik und Poliklinik I (J.N., P.O., A.T., S.C., J. Pircher, S.M., C.S.), Klinikum der Universität München, Ludwig-Maximilians-Universität; DZHK (German Center for Cardiovascular Research) (J.N., P.N., M.J., L.M., J. Pircher, S.M., C.S.), Partner Site Munich Heart Alliance; Klinik und Poliklinik für Vaskuläre und Endovaskuläre Chirurgie (J. Pelisek, L.M.), Klinikum rechts der Isar, Technische Universität München; Deutsches Herzzentrum München (P.N., M.J.), Technische Universität München; Institute of Medical Informatics (A.H.), Statistics and Epidemiology, School of Medicine, Technische Universität München; Neurologische Klinik und Poliklinik (H.P.), Klinikum rechts der Isar, Technische Universität München; and Abteilung für Diagnostische und Interventionelle Neuroradiologie (B.F., C.Z., T.B.-B.), Klinikum rechts der Isar, Technische Universität München, Germany.
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87
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Abstract
The structure of stroke thrombi has gained an increasing amount of interest in recent years. The advent of endovascular thrombectomy has offered the unique opportunity to provide and analyze thrombi removed from ischemic stroke patients. It has become clear that the composition of ischemic stroke thrombi is relatively heterogenous and various molecular and cellular patterns become apparent. Good understanding of the histopathologic characteristics of thrombi is important to lead future advancements in acute ischemic stroke treatment. In this review, we give a brief overview of the main stroke thrombus components that have been recently characterized in this rapidly evolving field. We also summarize how thrombus heterogeneity can affect stroke treatment.
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Affiliation(s)
- Senna Staessens
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - Simon F De Meyer
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
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88
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Heo JH, Nam HS, Kim YD, Choi JK, Kim BM, Kim DJ, Kwon I. Pathophysiologic and Therapeutic Perspectives Based on Thrombus Histology in Stroke. J Stroke 2020; 22:64-75. [PMID: 32027792 PMCID: PMC7005358 DOI: 10.5853/jos.2019.03440] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 01/23/2020] [Indexed: 01/04/2023] Open
Abstract
Recent advances in endovascular thrombectomy have enabled the histopathologic analysis of fresh thrombi in patients with acute stroke. Histologic analysis has shown that the thrombus composition is very heterogeneous between patients. However, the distribution pattern of each thrombus component often differs between patients with cardiac thrombi and those with arterial thrombi, and the efficacy of endovascular thrombectomy is different according to the thrombus composition. Furthermore, the thrombus age is related to the efficacy of reperfusion therapy. Recent studies have shown that neutrophils and neutrophil extracellular traps contribute to thrombus formation and resistance to reperfusion therapy. Histologic features of thrombi in patients with stroke may provide some clues to stroke etiology, which is helpful for determining the strategy of stroke prevention. Research on thrombus may also be helpful for improving reperfusion therapy, including the development of new thrombolytic agents.
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Affiliation(s)
- Ji Hoe Heo
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.,Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Hyo Suk Nam
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.,Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Young Dae Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.,Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Kyo Choi
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - Byung Moon Kim
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Korea.,Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - Dong Joon Kim
- Department of Radiology, Yonsei University College of Medicine, Seoul, Korea
| | - Il Kwon
- Integrative Research Center for Cerebrovascular and Cardiovascular Diseases, Yonsei University College of Medicine, Seoul, Korea
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89
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Serna Candel C, Hellstern V, Beitlich T, Aguilar Pérez M, Bäzner H, Henkes H. Management of a decompensated acute-on-chronic intracranial venous sinus thrombosis. Ther Adv Neurol Disord 2019; 12:1756286419895157. [PMID: 31903097 PMCID: PMC6931136 DOI: 10.1177/1756286419895157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 11/22/2019] [Indexed: 12/22/2022] Open
Abstract
A 34-year-old female patient presented during the 10th week of her second gravidity with headache, nausea and vomiting 2 weeks before admission. Her medical history was remarkable for a heterozygous factor V Leiden mutation, elevated lipoprotein A, and a cerebral venous thrombosis (CVT) after oral contraceptive intake 15 years before. Magnetic resonance imaging (MRI) suggested acute and massive intracranial sinus thrombosis. Despite full-dose anticoagulation, the patient deteriorated clinically and eventually became comatose. Now, MRI/magnetic resonance angiography revealed vasogenic edema of both thalami, of the left frontal lobe, and of the head of the caudate nucleus, with venous stasis and frontal petechial hemorrhage. She was referred for endovascular treatment. Diagnostic angiography confirmed a complete superficial and deep venous sinus occlusion. Endovascular access to the straight and superior sagittal sinus was possible, but neither rheolysis nor balloon angioplasty resulted in recanalization of the venous sinuses. Monitored heparinization was continued and antiaggregation was initiated. The patient remained comatose for another 5 days and MRI showed progress of the cytotoxic edema. On day 6, infusion of eptifibatide at body-weight-adapted dosage was started. The following day, the patient improved and slowly regained consciousness. MRI confirmed regression of the edema. The eptifibatide infusion was continued for a total of 14 days. Thereafter two doses of 180 mg ticagrelor per os (PO) daily were started. The patient remained on acetylsalicylic acid (ASA), ticagrelor, and enoxaparin on an unchanged dosage regimen. She was discharged home 26 days after the endovascular treatment without serious neurological deficit, with the pregnancy intact. At the 30th week of pregnancy the dosage of ASA was reduced to 300 mg once PO daily. Cesarian delivery was carried out at the 38th week of pregnancy. The newborn was completely healthy. Ultima ratio therapeutic options for severe intracranial venous sinus thrombosis refractory to anticoagulation are discussed, with an emphasis on platelet-function inhibition.
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Affiliation(s)
| | | | - Tania Beitlich
- Neurologsche Klinik, Klinikum Karlsruhe,
Karlsruhe, Germany
| | | | | | - Hans Henkes
- Neuroradiologische Klinik, Klinikum Stuttgart,
Kriegsbergstrasse 60, Stuttgart 70174, Germany
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90
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Khismatullin RR, Shakirova AZ, Weisel JW, Litvinov RI. Age-Dependent Differential Staining of Fibrin in Blood Clots and Thrombi. BIONANOSCIENCE 2019. [DOI: 10.1007/s12668-019-00701-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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91
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Douglas A, Fitzgerald S, Mereuta OM, Rossi R, O'Leary S, Pandit A, McCarthy R, Gilvarry M, Holmegaard L, Abrahamsson M, Jerndal M, Dehlfors N, Brennan P, Power S, O'Hare A, Griffin E, Kallmes DF, Brinjikji W, Szikora I, Tatlisumak T, Rentzos A, Thornton J, Doyle K. Platelet-rich emboli are associated with von Willebrand factor levels and have poorer revascularization outcomes. J Neurointerv Surg 2019; 12:557-562. [DOI: 10.1136/neurintsurg-2019-015410] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/18/2019] [Accepted: 10/20/2019] [Indexed: 01/07/2023]
Abstract
Background and aimsPlatelets and von Willebrand factor (vWF) are key factors in thrombosis and thus are likely key components of acute ischemic stroke (AIS) emboli. We aimed to characterize platelet and vWF levels in AIS emboli and to assess associations between their expression levels and clinical and procedural information.Materials and methodHistopathological and immunohistochemical analysis of emboli collected as part of the multi-institutional RESTORE registry was performed. The composition of the emboli was quantified using Orbit Image Analysis machine learning software. Correlations between clot components and clinical and procedural information were assessed using the χ2 test.ResultsNinety-one emboli samples retrieved from 63 patients were analyzed in the study. The mean platelet (CD42b) content of the clots was 33.9% and the mean vWF content of the clots was 29.8%. There was a positive correlation between platelet and vWF levels (ρ=0.564, p<0.001*, n=91). There was an inverse correlation between both platelets and vWF levels and percentage of red blood cells (RBCs) in the emboli (CD42b vs RBC: ρ=−0.535, p<0.001*, n=91; vWF vs RBC: ρ=−0.366, p<0.001*, n=91). Eighty-one percent of patients in the low platelet group had a good revascularization outcome (Thrombolysis in Cerebral Infarction 2c/3) compared with 58% in the high platelet group (χ2=5.856, p=0.016).ConclusionPlatelet and vWF levels in AIS emboli correlate with each other and both have an inverse relationship with RBC composition. Patients with platelet-rich clots have poorer revascularization outcomes.
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92
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Warny M, Helby J, Birgens HS, Bojesen SE, Nordestgaard BG. Arterial and venous thrombosis by high platelet count and high hematocrit: 108 521 individuals from the Copenhagen General Population Study. J Thromb Haemost 2019; 17:1898-1911. [PMID: 31309714 DOI: 10.1111/jth.14574] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 07/11/2019] [Indexed: 08/31/2023]
Abstract
BACKGROUND It is unclear whether high platelet count or high hematocrit predict risk of thrombosis in individuals from the general population. OBJECTIVES We tested the hypothesis that individuals from the general population with high platelet count or high hematocrit have high risk of arterial and venous thrombosis. METHODS We prospectively followed 108 521 individuals from The Copenhagen General Population Study for a median of 8 years. Platelet count and blood hematocrit were measured at study entry. RESULTS AND CONCLUSION Multivariable adjusted hazard ratios for individuals with platelet counts in the top 5 percentiles (>398 × 109 /L) vs in the 25th-75th percentiles (231-316 × 109 /L) were 1.77 (95% confidence interval [CI], 1.38-2.24) for arterial thrombosis in the brain (38 and 26 events/10 000 person-years) and 0.82 (95%, 0.61-1.11) for arterial thrombosis in the heart (23 and 28 events/10 000 person-years). For individuals with hematocrit values in the top 5 percentiles (women/men: >45/>48%) vs the 25th-75th percentiles (women/men: 38.1-42/41.1-45%), hazard ratios were 1.27 (95% CI, 0.91-1.75) for arterial thrombosis in the brain (40 and 26 events/10 000 person-years) and 1.46 (95% CI, 1.06-2.00) for arterial thrombosis in the heart (43 and 25 events/10 000 person-years). Neither high platelet count nor high hematocrit was associated with risk of venous thromboembolism. When excluding individuals with myeloproliferative neoplasia from the main analyses, results on risk of thrombosis were similar. In this prospective study, high platelet counts were associated with 1.8-fold risk of arterial thrombosis in the brain, whereas high hematocrit was associated with 1.5-fold risk of arterial thrombosis in the heart.
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Affiliation(s)
- Marie Warny
- Department of Hematology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
| | - Jens Helby
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Department of Internal Medicine, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
| | - Henrik S Birgens
- Department of Hematology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Stig E Bojesen
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
| | - Børge G Nordestgaard
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
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93
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Alves HC, Treurniet KM, Jansen IGH, Yoo AJ, Dutra BG, Zhang G, Yo L, van Es ACGM, Emmer BJ, van den Berg R, van den Wijngaard IR, Lycklama À Nijeholt GJ, Vos JA, Roos YBWEM, Schonewille W, Marquering HA, Majoie CBLM. Thrombus Migration Paradox in Patients With Acute Ischemic Stroke. Stroke 2019; 50:3156-3163. [PMID: 31597552 PMCID: PMC6824579 DOI: 10.1161/strokeaha.119.026107] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Supplemental Digital Content is available in the text. The location of the thrombus as observed on first digital subtraction angiography during endovascular treatment may differ from the initial observation on initial noninvasive imaging. We studied the incidence of thrombus dynamics, its impact on patient outcomes, and its association with intravenous thrombolytics.
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Affiliation(s)
- Heitor C Alves
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands.,Biomedical Engineering and Physics (H.C.A., B.G.D., H.A.M.), Academic Medical Center, Amsterdam, the Netherlands.,Department of Radiology, Irmandade Santa Casa de Misericórdia de São Paulo, Brazil (H.C.A., B.G.D.)
| | - Kilian M Treurniet
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
| | - Ivo G H Jansen
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
| | - Albert J Yoo
- Division of Interventional Neuroradiology, Department of Radiology, Texas Stroke Institute, Plano (A.J.Y.)
| | - Bruna G Dutra
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands.,Biomedical Engineering and Physics (H.C.A., B.G.D., H.A.M.), Academic Medical Center, Amsterdam, the Netherlands.,Department of Radiology, Irmandade Santa Casa de Misericórdia de São Paulo, Brazil (H.C.A., B.G.D.)
| | - Guang Zhang
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
| | - Lonneke Yo
- Department of Radiology, Catharina Ziekenhuis, Eindhoven, the Netherlands (L.Y.)
| | - Adriaan C G M van Es
- Department of Radiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands (A.C.G.M.v.E.)
| | - Bart J Emmer
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
| | - René van den Berg
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
| | | | | | - Jan-Albert Vos
- Department of Radiology, St Antonius Ziekenhuis, Nieuwegein, the Netherlands (J.A.V)
| | - Yvo B W E M Roos
- Neurology (Y.B.W.E.M.R.), Academic Medical Center, Amsterdam, the Netherlands
| | - Wouter Schonewille
- Department of Neurology, University Medical Center, Utrecht, the Netherlands (W.S.)
| | - Henk A Marquering
- Biomedical Engineering and Physics (H.C.A., B.G.D., H.A.M.), Academic Medical Center, Amsterdam, the Netherlands
| | - Charles B L M Majoie
- From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
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94
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Semerano A, Strambo D, Genchi A, Bacigaluppi M. Letter by Semerano et al Regarding Article, “Platelet-Rich Emboli in Cerebral Large Vessel Occlusion Are Associated With a Large Artery Atherosclerosis Source”. Stroke 2019; 50:e297. [DOI: 10.1161/strokeaha.119.026662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Aurora Semerano
- Neurology and Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Hospital and Vita Salute San Raffaele University, Milano, Italy
| | - Davide Strambo
- Service of Neurology, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Angela Genchi
- Neurology and Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Hospital and Vita Salute San Raffaele University, Milano, Italy
| | - Marco Bacigaluppi
- Neurology and Neuroimmunology Unit, Institute of Experimental Neurology, IRCCS San Raffaele Hospital and Vita Salute San Raffaele University, Milano, Italy
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95
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Di Meglio L, Desilles JP, Ollivier V, Nomenjanahary MS, Di Meglio S, Deschildre C, Loyau S, Olivot JM, Blanc R, Piotin M, Bouton MC, Michel JB, Jandrot-Perrus M, Ho-Tin-Noé B, Mazighi M. Acute ischemic stroke thrombi have an outer shell that impairs fibrinolysis. Neurology 2019; 93:e1686-e1698. [PMID: 31541014 DOI: 10.1212/wnl.0000000000008395] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 05/29/2019] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVES Thrombi responsible for large vessel occlusion (LVO) in the setting of acute ischemic stroke (AIS) are characterized by a low recanalization rate after IV thrombolysis. To test whether AIS thrombi have inherent common features that limit their susceptibility to thrombolysis, we analyzed the composition and ultrastructural organization of AIS thrombi causing LVO. METHODS A total of 199 endovascular thrombectomy-retrieved thrombi were analyzed by immunohistology and scanning electron microscopy (SEM) and subjected to ex vivo thrombolysis assay. The relationship between thrombus organization and thrombolysis resistance was further investigated in vitro using thrombus produced by recalcification of citrated whole blood. RESULTS SEM and immunohistology analyses revealed that, although AIS thrombus composition and organization was highly heterogeneous, AIS thrombi shared a common remarkable structural feature in the form of an outer shell made of densely compacted thrombus components including fibrin, von Willebrand factor, and aggregated platelets. In vitro thrombosis experiments using human blood indicated that platelets were essential to the formation of the thrombus outer shell. Finally, in both AIS and in vitro thrombi, the thrombus outer shell showed a decreased susceptibility to tissue plasminogen activator-mediated thrombolysis as compared to the thrombus inner core. INTERPRETATION Irrespective of their etiology and despite their heterogeneity, intracranial thrombi causing LVO have a core shell structure that influences their susceptibility to thrombolysis.
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Affiliation(s)
- Lucas Di Meglio
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Jean-Philippe Desilles
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Véronique Ollivier
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Mialitiana Solo Nomenjanahary
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Sara Di Meglio
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Catherine Deschildre
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Stéphane Loyau
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Jean-Marc Olivot
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Raphaël Blanc
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Michel Piotin
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Marie-Christine Bouton
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Jean-Baptiste Michel
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Martine Jandrot-Perrus
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
| | - Benoît Ho-Tin-Noé
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France.
| | - Mikael Mazighi
- From U1148 Institut National de la Santé et de la Recherche Médicale (INSERM) (L.D.M., J.-P.D., V.O., M.S.N., S.D.M., C.D., S.L., M.-C.B., J.-B.M., M.J.-P., B.H.-T.-N., M.M.), Laboratory of Vascular Translational Science, Sorbonne Paris Cité, Université Paris Diderot; Department of Interventional Neuroradiology (J.-P.D., R.B., M.P., M.M.), Rothschild Foundation Hospital, Paris; and Toulouse University Medical Center (J.-M.O.), France
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96
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Duffy S, McCarthy R, Gilvarry M. Response by Duffy et al to Letter Regarding Article, "Per-Pass Analysis of Thrombus Composition in Patients With Acute Ischemic Stroke Undergoing Mechanical Thrombectomy". Stroke 2019; 50:e296. [PMID: 31514699 DOI: 10.1161/strokeaha.119.026621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Sharon Duffy
- CERENOVUS, Galway Neuro Technology Centre, Galway, Ireland
| | - Ray McCarthy
- CERENOVUS, Galway Neuro Technology Centre, Galway, Ireland
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97
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Horie N, Shobayashi K, Morofuji Y, Sadakata E, Iki Y, Matsunaga Y, Kanamoto T, Tateishi Y, Izumo T, Anda T, Morikawa M, Tsujino A, Matsuo T. Impact of Mechanical Thrombectomy Device on Thrombus Histology in Acute Embolic Stroke. World Neurosurg 2019; 132:e418-e422. [PMID: 31470156 DOI: 10.1016/j.wneu.2019.08.130] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/16/2019] [Accepted: 08/17/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND Although many studies have evaluated the retrieved thrombus to assess the cause of stroke after mechanical thrombectomy for acute large vessel occlusion, the results remain controversial. We investigated the hypothesis that histology of the retrieved thrombus is enhanced by mechanical thrombectomy devices. METHODS Thrombi were collected from consecutive patients who had undergone endovascular mechanical recanalization for large intracranial vessel occlusion. The mechanical thrombectomy device used was either an aspiration catheter or a stent retriever. The hematoxylin and eosin-stained specimens were quantitatively analyzed with respect to the relative fractions of the main constituents (erythrocytes and fibrin). Clinical and radiologic findings were also evaluated. RESULTS Of 65 patients, an aspiration catheter was used in 27, and a stent retriever was used in 38. The presence of a preoperative susceptibility vessel sign on magnetic resonance imaging was not correlated with the percentage of erythrocytes. Thrombus cross-sectional area was larger in the aspiration group than in the stent group (P < 0.01). Conversely, the percentage of the fibrin component was higher in the stent group (P < 0.001). Preoperative intravenous administration of recombinant tissue plasminogen activator reduced thrombus cross-sectional area with a trend of increased percentage of fibrin and reduced percentage of erythrocyte in the stent group. CONCLUSIONS Histologic differences in retrieved thrombi are enhanced by mechanical thrombectomy devices. Stent retrievers may crush the thrombus, which may have a synergistic effect with recombinant tissue plasminogen activator. Histology of the retrieved thrombi might be different from histology of the original thrombi.
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Affiliation(s)
- Nobutaka Horie
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan.
| | | | - Yoichi Morofuji
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Eisaku Sadakata
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Yusuke Iki
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Yuki Matsunaga
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Tadashi Kanamoto
- Department of Neurology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Yohei Tateishi
- Department of Neurology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Tsuyoshi Izumo
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Takeo Anda
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Minoru Morikawa
- Department of Radiology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Akira Tsujino
- Department of Neurology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Takayuki Matsuo
- Department of Neurosurgery, Nagasaki University School of Medicine, Nagasaki, Japan
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98
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Bacigaluppi M, Semerano A, Gullotta GS, Strambo D. Insights from thrombi retrieved in stroke due to large vessel occlusion. J Cereb Blood Flow Metab 2019; 39:1433-1451. [PMID: 31213164 PMCID: PMC6681524 DOI: 10.1177/0271678x19856131] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The recent advances of endovascular procedures to treat stroke due to large cerebral vessel occlusion have made it possible to analyze the retrieved thrombus material. Analysis of cerebral thrombi is emerging as a relevant opportunity to complement the diagnostic workup of etiology, to develop new lytic approaches and to optimize the acute treatment of stroke due to large vessel occlusion. Nonetheless, retrieved thrombi are frequently discarded since their informative potential is often neglected and standards are missing. This review provides an overview of the current knowledge and expanding research relating to thrombus composition analysis in large vessel occlusions. We first discuss the heterogeneity of thrombogenic factors that underlie the thrombotic formation in stroke and its implications to identify stroke etiology and thrombus age. Further, we show that understanding structural characteristics of thrombus is pivotal for the development of new-targeted lytic therapies as well as to improve, through thrombus modeling, the development of thrombectomy devices. Finally, we discuss the on-going attempts to identify a signature of thrombus composition indirectly through imaging and peripheral blood biomarkers, which might in future assist treatment decision-making as well as secondary prevention. Thrombus analysis might contribute to the advancement and optimization of personalized stroke treatments.
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Affiliation(s)
- Marco Bacigaluppi
- 1 Neurology and Neuroimmunology Unit, Insititute of Experimental Neurology, San Raffaele Scientific Institute, Milano, Italy
| | - Aurora Semerano
- 1 Neurology and Neuroimmunology Unit, Insititute of Experimental Neurology, San Raffaele Scientific Institute, Milano, Italy
| | - Giorgia Serena Gullotta
- 1 Neurology and Neuroimmunology Unit, Insititute of Experimental Neurology, San Raffaele Scientific Institute, Milano, Italy
| | - Davide Strambo
- 1 Neurology and Neuroimmunology Unit, Insititute of Experimental Neurology, San Raffaele Scientific Institute, Milano, Italy.,2 Service of Neurology, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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99
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Shekhar H, Kleven RT, Peng T, Palaniappan A, Karani KB, Huang S, McPherson DD, Holland CK. In vitro characterization of sonothrombolysis and echocontrast agents to treat ischemic stroke. Sci Rep 2019; 9:9902. [PMID: 31289285 PMCID: PMC6616381 DOI: 10.1038/s41598-019-46112-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 06/12/2019] [Indexed: 12/30/2022] Open
Abstract
The development of adjuvant techniques to improve thrombolytic efficacy is important for advancing ischemic stroke therapy. We characterized octafluoropropane and recombinant tissue plasminogen activator (rt-PA)-loaded echogenic liposomes (OFP t-ELIP) using differential interference and fluorescence microscopy, attenuation spectroscopy, and electrozone sensing. The loading of rt-PA in OFP t-ELIP was assessed using spectrophotometry. Further, it was tested whether the agent shields rt-PA against degradation by plasminogen activator inhibitor-1 (PAI-1). An in vitro system was used to assess whether ultrasound (US) combined with either Definity or OFP t-ELIP enhances rt-PA thrombolysis. Human whole blood clots were mounted in a flow system and visualized using an inverted microscope. The perfusate consisted of either (1) plasma alone, (2) rt-PA, (3) OFP t-ELIP, (4) rt-PA and US, (5) OFP t-ELIP and US, (6) Definity and US, or (7) rt-PA, Definity, and US (n = 16 clots per group). An intermittent US insonation scheme was employed (220 kHz frequency, and 0.44 MPa peak-to-peak pressures) for 30 min. Microscopic imaging revealed that OFP t-ELIP included a variety of structures such as liposomes (with and without gas) and lipid-shelled microbubbles. OFP t-ELIP preserved up to 76% of rt-PA activity in the presence of PAI-1, whereas only 24% activity was preserved for unencapsulated rt-PA. The use of US with rt-PA and Definity enhanced lytic efficacy (p < 0.05) relative to rt-PA alone. US combined with OFP t-ELIP enhanced lysis over OFP t-ELIP alone (p < 0.01). These results demonstrate that ultrasound combined with Definity or OFP t-ELIP can enhance the lytic activity relative to rt-PA or OFP t-ELIP alone, respectively.
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Affiliation(s)
- Himanshu Shekhar
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH, USA.
| | - Robert T Kleven
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, USA
| | - Tao Peng
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Texas Health Science Center-Houston, Houston, TX, USA
| | - Arunkumar Palaniappan
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH, USA
| | - Kunal B Karani
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH, USA
| | - Shaoling Huang
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Texas Health Science Center-Houston, Houston, TX, USA
| | - David D McPherson
- Department of Internal Medicine, Division of Cardiovascular Medicine, University of Texas Health Science Center-Houston, Houston, TX, USA
| | - Christy K Holland
- Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH, USA.,Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, USA
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100
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Benson JC, Fitzgerald ST, Kadirvel R, Johnson C, Dai D, Karen D, Kallmes DF, Brinjikji W. Clot permeability and histopathology: is a clot's perviousness on CT imaging correlated with its histologic composition? J Neurointerv Surg 2019; 12:38-42. [PMID: 31239329 DOI: 10.1136/neurintsurg-2019-014979] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/24/2019] [Accepted: 05/25/2019] [Indexed: 11/04/2022]
Abstract
BACKGROUND Clot perviousness in large vessel occlusion has been shown to be associated with improved recanalization outcomes with mechanical thrombectomy and intravenous thrombolysis. OBJECTIVE To evaluate the association between clot perviousness based on thrombus attenuation increase (TAI) on CT, and histologic composition of clots in acute ischemic stroke (AIS). METHODS A retrospective review was completed of patients with AIS secondary to large vessel occlusion, non-contrast CT (NCCT) and CT angiography (CTA) images, and histologic analysis of the retrieved clot. TAI was measured by subtracting clot attenuation on NCCT from the attenuation on CTA. Up to 3 regions of interest (ROIs) were evaluated on each clot; the average attenuation was used for analysis if multiple ROIs were assessed. Pervious clots were defined as TAI ≥10 Hounsfield units (HUs); impervious clots had TAI <10 HU. Histopathologic analyses of clots were assessed for relative compositions of red blood cells (RBCs), white blood cells (WBCs), fibrin, and platelets/other. RESULTS 57 patients were included. Pervious clots were more likely to be RBC rich (p=0.04); impervious clots were more likely to be fibrin and WBC rich (p=0.01 for both). Pervious clots also had greater RBC density than impervious clots (49.8% and 33.0%, respectively; p=0.006); fibrin density of pervious clots was lower than that of impervious clots (17.8% and 23.2%, respectively; p=0.02). CONCLUSION Clot perviousness, assessed on NCCT and CTA imaging, is associated with higher RBC density and lower fibrin density, offering a possible explanation for the higher rates of successful thrombectomy and favorable clinical outcome seen in such patients.
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Affiliation(s)
| | - Sean T Fitzgerald
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA.,CURAM- Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | | | - Collin Johnson
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Daying Dai
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Doyle Karen
- CURAM- Centre for Research in Medical Devices, National University of Ireland Galway, Galway, Ireland
| | - David F Kallmes
- Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Waleed Brinjikji
- Department of Neuroradiology, Mayo Clinic, Rochester, Minnesota, USA
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