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Rinaldo L, Arturo Larco JL, Kadirvel R, Kallmes DF. Aneurysm healing after endovascular treatment in the Helsinki sidewall aneurysm model: a systematic review. J Neurointerv Surg 2023; 15:298-302. [PMID: 36220336 DOI: 10.1136/jnis-2022-019448] [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: 07/29/2022] [Accepted: 09/19/2022] [Indexed: 11/03/2022]
Abstract
AIMS Intracranial aneurysms are treated with a variety of endovascular devices including coils, stents, and flow diverters. The mechanisms by which these devices result in aneurysm occlusion and subsequent healing have been the subject of significant research using various animal models. The murine Helsinki aneurysm model is a sidewall aneurysm created by the end-to-side anastomosis of a donor aortic graft onto the abdominal aorta of a recipient animal. The aim of this systematic review is to assess the efficacy of different endovascular devices for the treatment of the Helsinki model aneurysm. METHODS We performed a systematic review of Pubmed in accordance with PRISMA guidelines, yielding eight studies detailing the results of endovascular treatment of this preclinical aneurysm model. Studies were included if they provided rates of complete aneurysm occlusion after treatment. RESULTS In these studies, aneurysms were treated with coiling (n=81, 7 studies), stenting (n=67, 3 studies), stent-coiling (n=13, 1 study), and flow diversion (n=49, 2 studies). The results of each individual study are discussed with the goal of providing a measure of the relative efficacy of different endovascular devices for the treatment of this particular model aneurysm. We also pay special attention to insights into the mechanisms underlying aneurysm healing after different forms of endovascular therapy. CONCLUSION The data presented here may be useful to investigators attempting to demonstrate superiority of novel endovascular devices relative to previous device iterations using this preclinical model.
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Affiliation(s)
- Lorenzo Rinaldo
- Department of Neurosurgery, Mayo Clinic, Rochester, New York, USA .,Department of Neurosurgery, University of California San Francisco, San Francisco, Northern California, USA
| | | | - Ramanathan Kadirvel
- Department of Neurosurgery, Mayo Clinic, Rochester, New York, USA.,Radiology, Mayo Clinic, Rochester, Minnesota, USA
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Qin Q, Liu Y, Yang Z, Aimaijiang M, Ma R, Yang Y, Zhang Y, Zhou Y. Hypoxia-Inducible Factors Signaling in Osteogenesis and Skeletal Repair. Int J Mol Sci 2022; 23:ijms231911201. [PMID: 36232501 PMCID: PMC9569554 DOI: 10.3390/ijms231911201] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/10/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Sufficient oxygen is required to maintain normal cellular and physiological function, such as a creature’s development, breeding, and homeostasis. Lately, some researchers have reported that both pathological hypoxia and environmental hypoxia might affect bone health. Adaptation to hypoxia is a pivotal cellular event in normal cell development and differentiation and in pathological settings such as ischemia. As central mediators of homeostasis, hypoxia-inducible transcription factors (HIFs) can allow cells to survive in a low-oxygen environment and are essential for the regulation of osteogenesis and skeletal repair. From this perspective, we summarized the role of HIF-1 and HIF-2 in signaling pathways implicated in bone development and skeletal repair and outlined the molecular mechanism of regulation of downstream growth factors and protein molecules such as VEGF, EPO, and so on. All of these present an opportunity for developing therapies for bone regeneration.
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Li X, Wei Z, Chen Y. CXCL12 regulates bone marrow–derived endothelial progenitor cells to promote aortic aneurysm recovery. Tissue Cell 2022; 77:101810. [DOI: 10.1016/j.tice.2022.101810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/13/2022] [Accepted: 04/24/2022] [Indexed: 11/28/2022]
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Therapeutic Potential of Heme Oxygenase-1 in Aneurysmal Diseases. Antioxidants (Basel) 2020; 9:antiox9111150. [PMID: 33228202 PMCID: PMC7699558 DOI: 10.3390/antiox9111150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 12/15/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) and intracranial aneurysm (IA) are serious arterial diseases in the aorta and brain, respectively. AAA and IA are associated with old age in males and females, respectively, and if rupture occurs, they carry high morbidity and mortality. Aneurysmal subarachnoid hemorrhage (SAH) due to IA rupture has a high rate of complication and fatality. Despite these severe clinical outcomes, preventing or treating these devastating diseases remains an unmet medical need. Inflammation and oxidative stress are shared pathologies of these vascular diseases. Therefore, therapeutic strategies have focused on reducing inflammation and reactive oxygen species levels. Interestingly, in response to cellular stress, the inducible heme oxygenase-1 (HO-1) is highly upregulated and protects against tissue injury. HO-1 degrades the prooxidant heme and generates molecules with antioxidative and anti-inflammatory properties, resulting in decreased oxidative stress and inflammation. Therefore, increasing HO-1 activity is an attractive option for therapy. Several HO-1 inducers have been identified and tested in animal models for preventing or alleviating AAA, IA, and SAH. However, clinical trials have shown conflicting results. Further research and the development of highly selective HO-1 regulators may be needed to prevent the initiation and progression of AAA, IA, or SAH.
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Yu G, Li S, Liu P, Shi Y, Liu Y, Yang Z, Fan Z, Zhu W. LncRNA TUG1 functions as a ceRNA for miR-6321 to promote endothelial progenitor cell migration and differentiation. Exp Cell Res 2020; 388:111839. [DOI: 10.1016/j.yexcr.2020.111839] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 12/18/2022]
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Abstract
Objective: Recent studies have shown the important influence of various micro factors on the general biological activity and function of endothelial cells (ECs). Vascular endothelial growth factor (VEGF) and angiogenin (ANG) are classic micro factors that promote proliferation, differentiation, and migration of ECs. The underlying pathophysiological mechanisms and related pathways of these micro factors remain the focus of current research. Data sources: An extensive search was undertaken in the PubMed database by using keywords including “micro factors” and “endothelial cell.” This search covered relevant research articles published between January 1, 2007 and December 31, 2018. Study selection: Original articles, reviews, and other articles were searched and reviewed for content on micro factors of ECs. Results: VEGF and ANG have critical functions in the occurrence, development, and status of the physiological pathology of ECs. Other EC-associated micro factors include interleukin 10, tumor protein P53, nuclear factor kappa B subunit, interleukin 6, and tumor necrosis factor. The results of Gene Ontology analysis revealed that variations were mainly enriched in positive regulation of transcription by the RNA polymerase II promoter, cellular response to lipopolysaccharides, negative regulation of apoptotic processes, external side of the plasma membrane, cytoplasm, extracellular regions, cytokine activity, growth factor activity, and identical protein binding. The results of the Kyoto Encyclopedia of Genes and Genomes analysis revealed that micro factors were predominantly enriched in inflammatory diseases. Conclusions: In summary, the main mediators, factors, or genes associated with ECs include VEGF and ANG. The effect of micro factors on ECs is complex and multifaceted. This review summarizes the correlation between ECs and several micro factors.
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Sultanova RI, Khusainova RI, Lebedeva ER, Yankina MA, Gilev DV, Khusnutdinova EK. Association of vascular endothelial growth factor B (VEGFВ) gene polymorphisms with intracranial aneurysms. Vavilovskii Zhurnal Genet Selektsii 2019. [DOI: 10.18699/vj18.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Intracranial aneurysm (IA) is a complex disease resulting in subarachnoid hemorrhage (SAH) due to a rupture. The average worldwide prevalence of this disease is about 2–5 %, with 50 % of them ending in death or neurological disorders of varying severity, with a high probability of recurrence of hemorrhage during the frst half of the year after rupture. Subarachnoid hemorrhage is annually registered in at least 18 thousand people in Russia. Associations of polymorphic variantsrs594942andrs11603042of theVEGFBgene in intracranial aneurysm development in the Volga-Ural region of the Russian Federation with the presence of the symptom complex of undifferentiated connective tissue dysplasia (uDST) and arterial hypertension (AH) were investigated. TheC* allelers594942andrs11603042of theVEGFBgene is a marker of an increased risk of IA as a whole (p= 0.025; χ2 = 5.052; OR = 1.32) in women as a whole (p= 0.001; χ2 = 10.124; OR = 1.70) and in comorbid state with uDCT (p= 0.002; χ2 = 9.501; OR = 2.34) and AG (p= 0.006; χ2 = 7.385; OR = 2.109). We found that the genotype *C*Cof locusrs594942of theVEGFBgene is a marker of an increased risk of intracranial aneurysm in general (p= 0.017; χ2 = 5.702; OR = 1.49) and among women in general (p= 0.0005; χ2 = 12.078; OR = 2.25) and with the symptomatic complex uCTD (p= 0.007; χ2 = 7.173; OR = 2.67) and AH (p= 0.010; χ2 = 6.471; OR = 2.51). We have obtained new results on the role of polymorphic variants of theVEGFBgene in the formation of intracranial aneurysm, taking into account the presence of the symptom complex uDCT and AH among the residents of the Volga-Ural region of Russia. A burdened comorbid background and the presence of undifferentiated connective tissue dysplasia and arterial hypertension can contribute to an increased risk of intracranial aneurysm, as evidenced by the results of our study.
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Affiliation(s)
- R. I. Sultanova
- Bashkir State University; Republican Medical Genetics Center
| | - R. I. Khusainova
- Bashkir State University; Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS; Republican Medical Genetics Center
| | - E. R. Lebedeva
- Ural State Medical University; International Center for the Treatment of Headaches “Europe-Asia”
| | - M. A. Yankina
- Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS
| | | | - E. K. Khusnutdinova
- Bashkir State University; Institute of Biochemistry and Genetics – Subdivision of the Ufa Federal Research Centre, RAS; Republican Medical Genetics Center
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Yu G, Liu P, Shi Y, Li S, Liu Y, Zhu W. Sitagliptin Stimulates Endothelial Progenitor Cells to Induce Endothelialization in Aneurysm Necks Through the SDF-1/CXCR4/NRF2 Signaling Pathway. Front Endocrinol (Lausanne) 2019; 10:823. [PMID: 32038475 PMCID: PMC6988800 DOI: 10.3389/fendo.2019.00823] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 11/11/2019] [Indexed: 12/30/2022] Open
Abstract
Aneurysm (AN) embolization is an important treatment for cerebral aneurysms. The endothelialization of the aneurysm neck is crucial for preventing aneurysm recurrence. Sitagliptin is a therapeutic drug for diabetes that has been reported to have cardiovascular-protective effects. This study investigated the effect of sitagliptin on endothelial progenitor cell (EPC) function and endothelialization of aneurysm necks after embolization. The effect of sitagliptin on aneurysm neck endothelialization was examined using a rat aneurysm embolization model. We isolated EPCs and used CCK-8 (Cell Counting Kit-8) and annexin V/PI to analyze the effect of sitagliptin on the proliferation and apoptosis of EPCs. The effects of sitagliptin on the migration and invasion of EPCs were examined using scratch and Transwell assays. The effect of sitagliptin on the angiogenic ability of EPCs was examined using a sprouting assay. Western blot analysis and ELISA were used to analyze the effect of sitagliptin on the expression of proangiogenic factors in EPCs. The in vivo results indicated that sitagliptin promoted endothelialization of the aneurysm neck and increased circulating EPCs and expression levels of SDF-1 and VEGF in peripheral blood. Sitagliptin promoted the proliferation, migration, invasion, and angiogenic abilities of EPCs. Western blot analysis and ELISA showed that sitagliptin promoted the expression of SDF-1 and VEGF in progenitor endothelial cells. Western blot assays showed that sitagliptin activated the expression of NRF2, which is dependent on the function of CXCR4. Furthermore, sitagliptin promoted progenitor endothelial cell migration, invasion and angiogenesis through the SDF-1/CXCR4/NRF2 signaling pathway. Additionally, progenitor endothelial cells expressed SDF-1 and VEGF. The promotion of endothelialization by sitagliptin provides an additional therapeutic option for preventing the recurrence of AN.
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Affiliation(s)
- Guo Yu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
- Neurosurgery Institute of Fudan University, Shanghai, China
| | - Peixi Liu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
- Neurosurgery Institute of Fudan University, Shanghai, China
| | - Yuan Shi
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
- Neurosurgery Institute of Fudan University, Shanghai, China
| | - Sichen Li
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
- Neurosurgery Institute of Fudan University, Shanghai, China
| | - Yingjun Liu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
- Neurosurgery Institute of Fudan University, Shanghai, China
| | - Wei Zhu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
- Neurosurgery Institute of Fudan University, Shanghai, China
- *Correspondence: Wei Zhu
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Liu P, Liu Y, Li P, Zhou Y, Song Y, Shi Y, Feng W, Mo X, Gao H, An Q, Zhu W. Rosuvastatin- and Heparin-Loaded Poly(l-lactide- co-caprolactone) Nanofiber Aneurysm Stent Promotes Endothelialization via Vascular Endothelial Growth Factor Type A Modulation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41012-41018. [PMID: 30403126 DOI: 10.1021/acsami.8b11714] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study explored a new rosuvastatin calcium- and heparin-loaded poly(l-lactide- co-caprolactone) (PLCL) scaffold for covered stents for treating aneurysms. The mechanism of rosuvastatin-induced endothelialization via vascular endothelial growth factor (VEGF)-A elevation was further explored. Rosu50, Rosu75, Rosu100, and phosphate-buffered saline (PBS) nanofibrous scaffolds were fabricated by coaxial electrospinning and observed by electron microscopy. Anticoagulation and pro-endothelialization properties were tested. Sixteen rabbits were selected for an in vivo assay and underwent microsurgery to establish a carotid aneurysm model. The animals were treated with covered stents and followed for 4 months using digital subtraction angiography (DSA), electron microscopy, and histology. Rosuvastatin-treated human umbilical vein endothelial cell (HUVEC) viability, function, and VEGF-A modulation were further studied to elucidate the pro-endothelialization mechanism of rosuvastatin. Our study demonstrates that rosuvastatin and heparin can be incorporated into PLCL nanofibers via electrospinning. Rosu100 nanofiber scaffolds exhibited significant anticoagulation properties. The viability of HUVECs transferred to Rosu100 nanofiber scaffolds was increased significantly. In vivo, DSA revealed that the Rosu100 group had better outcomes than the PBS group. In addition, the Rosu100 stents induced more integrated endothelialization. Further study demonstrated that rosuvastatin promoted HUVEC viability and function in vitro. The effects of rosuvastatin may be attributed to an elevation in VEGF-A. We demonstrated that rosuvastatin- and heparin-loaded PLCL-covered stents show favorable anticoagulation and pro-endothelialization properties in vitro and in vivo in a rabbit aneurysm model. VEGF-A elevation played a crucial role in rosuvastatin-promoted endothelialization. This work provides an additional option for treating cerebral aneurysms with covered stents.
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Affiliation(s)
| | | | | | | | - Yaying Song
- Department of Neurology , Ruijin Hospital, Shanghai Jiao Tong University School of Medicine , Shanghai 200025 , China
| | | | - Wenhao Feng
- Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China
| | - Xiumei Mo
- Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , China
| | - Hongyang Gao
- Electron Microscopy Core Laboratory, School of Basic Medical Sciences , Fudan University , Shanghai 200433 , China
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Liu P, Shi Y, Fan Z, Zhou Y, Song Y, Liu Y, Yu G, An Q, Zhu W. Inflammatory Smooth Muscle Cells Induce Endothelial Cell Alterations to Influence Cerebral Aneurysm Progression via Regulation of Integrin and VEGF Expression. Cell Transplant 2018; 28:713-722. [PMID: 30497276 PMCID: PMC6686430 DOI: 10.1177/0963689718815824] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Cerebral aneurysm growth is characterized by vessel wall frailness, although the underlying cellular mechanisms are unclear. Here, we examined the relationship between inflammatory smooth muscle cells (SMCs) and endothelial cells (ECs) in cerebral aneurysms, including the mechanisms underlying inflammatory SMC-induced changes in ECs. Five saccular cerebral aneurysms were collected and five temporal artery samples were used as controls. Cells and cytokines were detected by immunohistochemistry and TUNEL (transferase dUTP nick end labeling) assays performed to evaluate apoptosis. Human umbilical vein endothelial cells (HUVECs) were seeded on collagen I, IV, and VI-coated plates for cell adhesion assays and inflammatory SMCs (iSMCs) were established by culture in flexible silicone chambers subjected to cyclic mechanical stretch. HUVECs were cultured in iSMC-conditioned medium, followed by evaluation of their viability, apoptosis, and function, and determination of VEGF (vascular endothelial growth factor) -A and integrin levels by western blotting. Aneurysm tissue contained fewer SMCs and lacked ECs. In aneurysm walls, more matrix metalloproteinase (MMP) -1, MMP-3, and apoptotic cells were detected, accompanied by decreased collagen IV and VI levels. Cell adhesion assays revealed that more HUVECs were attached in collagen IV and VI-coated plates compared with controls. iSMC-conditioned medium significantly reduced HUVEC viability and apoptosis showed an increased trend; however, the difference was not significant. iSMC medium also reduced tube formation and migration of HUVECs. Moreover, iSMC medium reduced HUVEC expression of VEGF-A, integrin α1, integrin α2, and integrin β. Our data demonstrate a lack of SMCs and ECs in aneurysm walls, accompanied by elevated MMP and decreased collagen levels. In vitro assays showed that iSMCs induced reduction in EC adhesion, and caused EC dysfunction. Understanding of the relationships among SMC, EC, and collagens during aneurysm progression provides an additional therapeutic option for prevention of cerebral aneurysm progression.
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Affiliation(s)
- Peixi Liu
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Yuan Shi
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Zhiyuan Fan
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Yingjie Zhou
- 2 Department of Hand surgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Yaying Song
- 3 Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yingjun Liu
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Guo Yu
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Qingzhu An
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
| | - Wei Zhu
- 1 Department of Neurosurgery, Huashan Hospital of Fudan University. Shanghai, China
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Song Y, Liu P, Li Z, Shi Y, Huang J, Li S, Liu Y, Zhang Z, Wang Y, Zhu W, Yang GY. The Effect of Myosin Light Chain Kinase on the Occurrence and Development of Intracranial Aneurysm. Front Cell Neurosci 2018; 12:416. [PMID: 30555299 PMCID: PMC6282066 DOI: 10.3389/fncel.2018.00416] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/24/2018] [Indexed: 12/26/2022] Open
Abstract
Myosin light chain kinase is a key enzyme in smooth muscle cell contraction. However, whether myosin light chain kinase plays a role in the occurrence or development of intracranial aneurysms is not clear. The present study explored the function of myosin light chain kinase in human intracranial aneurysm tissues. Five aneurysm samples and five control samples were collected, and smooth muscle cells (SMCs) were dissociated and cultured. A label-free proteomic analysis was performed to screen the differentially expressed proteins between aneurysm and control samples. The expression and function of myosin light chain kinase in aneurysms were examined. We found that 180 proteins were differentially expressed between the aneurysm and control samples, among which 88 were increased and 92 (including myosin light chain kinase) were decreased in aneurysms compared to control tissues. In a model of the inflammatory environment, contractility was weakened and apoptosis was increased in aneurysm SMCs compared to human brain SMCs (p < 0.05). The knock down of myosin light chain kinase in human brain SMCs caused effects similar to those observed in aneurysm SMCs. These results indicated that myosin light chain kinase plays an important role in maintaining smooth muscle contractility, cell survival and inflammation tolerance.
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Affiliation(s)
- Yaying Song
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peixi Liu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Zongwei Li
- Neuroscience and Neuroengineering Research Center, School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Shi
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Jun Huang
- Shanghai Key Laboratory of Hypertension, Department of Hypertension, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sichen Li
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Yingjun Liu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Zhijun Zhang
- Neuroscience and Neuroengineering Research Center, School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Yongting Wang
- Neuroscience and Neuroengineering Research Center, School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Zhu
- Department of Neurosurgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Guo-Yuan Yang
- Department of Neurology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Neuroscience and Neuroengineering Research Center, School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
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Overexpression of Angiopoietin-1 Potentiates Endothelial Progenitor Cells for the Treatment of Aneurysm. Ann Vasc Surg 2018; 48:214-221. [DOI: 10.1016/j.avsg.2017.10.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 10/15/2017] [Accepted: 10/24/2017] [Indexed: 11/24/2022]
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Kolumam Parameswaran P, Dai D, Ding YH, Gunderson T, Kallmes DF, Kadirvel R. Assessment of endothelialization of aneurysm wall over time in a rabbit model through CD31 scoring. J Neurointerv Surg 2017; 10:888-891. [PMID: 29288193 DOI: 10.1136/neurintsurg-2017-013381] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 11/30/2017] [Accepted: 12/01/2017] [Indexed: 01/27/2023]
Abstract
BACKGROUND Intracranial aneurysms represent a significant health concern and are poorly understood despite decades of research. Our study focused on understanding temporal patterns of endothelial cell distribution in different spatial locations within the aneurysm early after creation in a rabbit model. METHODS Elastase induced saccular aneurysms were created in rabbits and harvested on day 1 (n=3) and after 2 (n=5), 4 (n=4), 8 (n=5), and 12 (n=6) weeks. Sham operated controls (n=3) were harvested on the same day. Aneurysm and control tissue samples were subjected to en face whole mount CD31 staining for endothelial cells. Semiquantitative scoring was performed on the basis of endothelial coverage of the vessel wall (proximal, middle, and distal portions of the aneurysm dome). Mixed effects models were used to assess the effect of time and aneurysm section on endothelial coverage. RESULTS Aneurysmal segments were near completely de-endothelialized at 4 and 8 weeks but had re-endothelialized by 12 weeks. Compared with controls, aneurysms at all time points showed decreased endothelialization, but the difference was only significant compared with the 4 and 8 week groups. Both time (P=0.03) and aneurysm section (P=0.07) were significantly associated with the degree of endothelialization. Proximal locations showed increased endothelialization compared with distal locations (P=0.03). CONCLUSION In experimental aneurysms of rabbits, endothelial cells regress during the first month after creation, followed by ascending re-endothelialization that stays incomplete. These findings suggest that re-population of endothelial cells comes from resident cells in the adjacent parent artery and that deranged hemodynamics may affect full reconstitution of endothelial cells long term.
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Affiliation(s)
| | - Daying Dai
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Yong-Hong Ding
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Tina Gunderson
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | - David F Kallmes
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
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Zhang J, Liu C, Feng F, Wang D, Lu S, Wei G, Mo H, Qiao T. A PC–PU nanoparticle/PU/decellularized scaffold composite vascular patch: Synergistically optimized overall performance promotes endothelialization. Colloids Surf B Biointerfaces 2017; 160:192-200. [DOI: 10.1016/j.colsurfb.2017.09.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 08/30/2017] [Accepted: 09/04/2017] [Indexed: 01/08/2023]
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