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Ji H, Li Y, Sun H, Chen R, Zhou R, Yang Y, Wang R, You C, Xiao A, Yi L. Decoding the Cell Atlas and Inflammatory Features of Human Intracranial Aneurysm Wall by Single-Cell RNA Sequencing. J Am Heart Assoc 2024; 13:e032456. [PMID: 38390814 PMCID: PMC10944067 DOI: 10.1161/jaha.123.032456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/26/2024] [Indexed: 02/24/2024]
Abstract
BACKGROUND Intracranial aneurysm (IA) is common and occasionally results in life-threatening hemorrhagic strokes. However, the cell architecture and inflammation in the IA dome remain less understood. METHODS AND RESULTS Single-cell RNA sequencing was performed on ruptured and unruptured human IA domes for delineating the cell atlas, gene expression perturbations, and inflammation features. Two external bulk mRNA sequencing-based data sets and serological results of 126 patients were collected for validation. As a result, a total of 21 332 qualified cells were captured. Vascular cells, including endothelial cells, smooth muscle cells, fibroblasts, and pericytes, were assigned in extremely sparse numbers (4.84%), and were confirmed by immunofluorescence staining. Pericytes, characterized by ABCC9 and HIGD1B, were identified in the IA dome for the first time. Abundant immune cells were identified, with the proportion of monocytes/macrophages and neutrophils being remarkably higher in ruptured IA. The lymphocyte compartment was also thoroughly categorized. By leveraging external data sets and machine learning algorithms, macrophages were robustly associated with IA rupture, irrespective of their polarization status. The single nucleotide polymorphism rs2280543, which is identified in East Asian populations, was associated with macrophage metabolic reprogramming through regulating TALDO1 expression. CONCLUSIONS This study provides insights into the cellular architecture and inflammatory features in the IA dome and may enlighten novel therapeutics for unruptured IA.
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Affiliation(s)
- Hang Ji
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
| | - Yue Li
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
| | - Haogeng Sun
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
| | - Ruiqi Chen
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
| | - Ran Zhou
- Department of Neurosurgery, State Key Laboratory of Biotherapy and Cancer Center, West China HospitalSichuan UniversityChengduChina
| | - Yongbo Yang
- Department of Neurosurgery, Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjingChina
| | - Rong Wang
- Department of Neurosurgery, Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
| | - Chao You
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
| | - Anqi Xiao
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
| | - Liu Yi
- Department of Neurosurgery, West China HospitalSichuan UniversityChengduChina
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Khan D, Li X, Hashimoto T, Tanikawa R, Niemela M, Lawton M, Muhammad S. Current Mouse Models of Intracranial Aneurysms: Analysis of Pharmacological Agents Used to Induce Aneurysms and Their Impact on Translational Research. J Am Heart Assoc 2024; 13:e031811. [PMID: 38258667 PMCID: PMC11056163 DOI: 10.1161/jaha.123.031811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 12/06/2023] [Indexed: 01/24/2024]
Abstract
Intracranial aneurysms (IAs) are rare vascular lesions that are more frequently found in women. The pathophysiology behind the formation and growth of IAs is complex. Hence, to date, no single pharmacological option exists to treat them. Animal models, especially mouse models, represent a valuable tool to explore such complex scientific questions. Genetic modification in a mouse model of IAs, including deletion or overexpression of a particular gene, provides an excellent means for examining basic mechanisms behind disease pathophysiology and developing novel pharmacological approaches. All existing animal models need some pharmacological treatments, surgical interventions, or both to develop IAs, which is different from the spontaneous and natural development of aneurysms under the influence of the classical risk factors. The benefit of such animal models is the development of IAs in a limited time. However, clinical translation of the results is often challenging because of the artificial course of IA development and growth. Here, we summarize the continuous improvement in mouse models of IAs. Moreover, we discuss the pros and cons of existing mouse models of IAs and highlight the main translational roadblocks and how to improve them to increase the success of translational IA research.
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Affiliation(s)
- Dilaware Khan
- Department of NeurosurgeryMedical Faculty and University Hospital Düsseldorf, Heinrich‐Heine‐Universität DüsseldorfDüsseldorfGermany
| | - Xuanchen Li
- Department of NeurosurgeryMedical Faculty and University Hospital Düsseldorf, Heinrich‐Heine‐Universität DüsseldorfDüsseldorfGermany
| | - Tomoki Hashimoto
- Department of Neurosurgery and NeurobiologyBarrow Neurological InstitutePhoenixAZUSA
| | - Rokuya Tanikawa
- Department of Neurosurgery, Stroke CenterSapporo Teishinkai HospitalSapporoHokkaidoJapan
| | - Mika Niemela
- Department of NeurosurgeryUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
| | - Michael Lawton
- Department of Neurological SurgeryBarrow Neurological Institute, St. Joseph’s Hospital and Medical CenterPhoenixAZUSA
| | - Sajjad Muhammad
- Department of NeurosurgeryMedical Faculty and University Hospital Düsseldorf, Heinrich‐Heine‐Universität DüsseldorfDüsseldorfGermany
- Department of NeurosurgeryUniversity of Helsinki and Helsinki University HospitalHelsinkiFinland
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Klepinowski T, Skonieczna-Żydecka K, Pala B, Stachowska E, Sagan L. Gut microbiome in intracranial aneurysm growth, subarachnoid hemorrhage, and cerebral vasospasm: a systematic review with a narrative synthesis. Front Neurosci 2023; 17:1247151. [PMID: 37928732 PMCID: PMC10620726 DOI: 10.3389/fnins.2023.1247151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 09/22/2023] [Indexed: 11/07/2023] Open
Abstract
Intracranial aneurysms (IA) are the most common cerebral vascular pathologies. Their rupture leads to the most dangerous subtype of stroke-aneurysmal subarachnoid hemorrhage (aSAH), which may be followed by cerebral vasospasm and ischemic sequelae. Recently, an imbalance within the intestinal microbiota, referred to as dysbiosis, was suggested to play a role in the formation, progression, and rupture of IA. As no systematic review on this topic exists, considering the significance of this matter and a lack of effective prophylaxis against IA or cerebral vasospasm, we aim to sum up the current knowledge regarding their associations with intestinal microbiome, identify the gaps, and determine future prospects. Scientific databases were systematically and independently searched by two authors from inception to 1st May 2023 for original articles regarding the role of intestinal microbiota in intracranial aneurysmal growth, aSAH occurrence, as well as in cerebral vasospasm following aSAH. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) checklist was followed in an abstraction process. The STROBE tool was applied to assess the risk of bias. This research was funded by the National Science Centre, Poland (grant number 2021/41/N/NZ2/00844). Of 302 records, four studies were included that fully met eligibility criteria. Studies reported (1) that the relative abundance of Hungatella hathewayi is a protective factor against aneurysm growth and rupture, resulting from the reduced inflammation and extracellular matrix remodeling in the cerebral arterial wall and from reduced metalloproteinase-mediated degradation of smooth muscle cells in cerebral vessels. (2) Relative abundance of Campylobacter ureolyticus is associated with aSAH. (3) No article has evaluated microbiota in relation to cerebral vasospasm following aSAH although there is an ongoing study. We concluded that intestinal microbiota might be a potential target for diagnostic and therapeutic tools to improve the management of cerebral aneurysms. However, more studies of prospective design are needed.
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Affiliation(s)
- Tomasz Klepinowski
- Department of Neurosurgery, Pomeranian Medical University, Szczecin, Poland
| | | | - Bartłomiej Pala
- Department of Neurosurgery, Pomeranian Medical University, Szczecin, Poland
| | - Ewa Stachowska
- Department of Human Nutrition and Metabolomics, Pomeranian Medical University, Szczecin, Poland
| | - Leszek Sagan
- Department of Neurosurgery, Pomeranian Medical University, Szczecin, Poland
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Hong EP, Cho SM, Rhim JK, Park JJ, Ahn JH, Youn DH, Kim JT, Park CH, Lee Y, Jeon JP. Updated Trans-Ethnic Meta-Analysis of Associations between Inflammation-Related Genes and Intracranial Aneurysm. J Korean Neurosurg Soc 2023; 66:525-535. [PMID: 37068789 PMCID: PMC10483160 DOI: 10.3340/jkns.2023.0001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 04/19/2023] Open
Abstract
OBJECTIVE We performed an expanded multi-ethnic meta-analysis to identify associations between inflammation-related loci with intracranial aneurysm (IA) susceptibility. This meta-analysis possesses increased statistical power as it is based on the most data ever evaluated. METHODS We searched and reviewed relevant literature through electronic search engines up to August 2022. Overall estimates were calculated under the fixed- or random-effect models using pooled odds ratio (OR) and 95% confidence intervals (CIs). Subgroup analyses were performed according to ethnicity. RESULTS Our meta-analysis enrolled 15 studies and involved 3070 patients and 5528 controls including European, Asian, Hispanic, and mixed ethnic populations. Of 17 inflammation-related variants, the rs1800796 locus (interleukin [IL]-6) showed the most significant genome-wide association with IA in East-Asian populations, including 1276 IA patients and 1322 controls (OR, 0.65; 95% CI, 0.56-0.75; p=3.24×10-9) under a fixed-effect model. However, this association was not observed in the European population (OR, 1.09; 95% CI, 0.80-1.47; p=0.5929). Three other variants, rs16944 (IL-1β), rs2195940 (IL-12B), and rs1800629 (tumor necrosis factor-α) showed a statistically nominal association with IA in both the overall, as well as East-Asian populations (0.01 CONCLUSION Our updated meta-analysis with increased statistical power highlights that rs1800796 which maps on the IL-6 gene is associated with IA, and in particular confers a protective effect against occurrence of IA in the East-Asian population.
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Affiliation(s)
- Eun Pyo Hong
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Sung Min Cho
- Department of Neurosurgery, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Jong Kook Rhim
- Department of Neurosurgery, Jeju National University College of Medicine, Jeju, Korea
| | - Jeong Jin Park
- Department of Neurology, Konkuk University Medical Center, Seoul, Korea
| | - Jun Hyong Ahn
- Department of Neurosurgery, Kangwon National University Hospital, Chuncheon, Korea
| | - Dong Hyuk Youn
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Jong-Tae Kim
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Chan Hum Park
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Younghyurk Lee
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
| | - Jin Pyeong Jeon
- Department of Neurosurgery, Hallym University College of Medicine, Chuncheon, Korea
| | - on behalf of the First Korean Stroke Genetics Association Research (The FirstKSGAR) Study
- Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea
- Department of Neurosurgery, Yonsei University Wonju College of Medicine, Wonju, Korea
- Department of Neurosurgery, Jeju National University College of Medicine, Jeju, Korea
- Department of Neurology, Konkuk University Medical Center, Seoul, Korea
- Department of Neurosurgery, Kangwon National University Hospital, Chuncheon, Korea
- Department of Neurosurgery, Hallym University College of Medicine, Chuncheon, Korea
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Manole S, Rancea R, Vulturar R, Simon SP, Molnar A, Damian L. Frail Silk: Is the Hughes-Stovin Syndrome a Behçet Syndrome Subtype with Aneurysm-Involved Gene Variants? Int J Mol Sci 2023; 24:ijms24043160. [PMID: 36834577 PMCID: PMC9968083 DOI: 10.3390/ijms24043160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/21/2023] [Accepted: 01/31/2023] [Indexed: 02/08/2023] Open
Abstract
Hughes-Stovin syndrome is a rare disease characterized by thrombophlebitis and multiple pulmonary and/or bronchial aneurysms. The etiology and pathogenesis of HSS are incompletely known. The current consensus is that vasculitis underlies the pathogenic process, and pulmonary thrombosis follows arterial wall inflammation. As such, Hughes-Stovin syndrome may belong to the vascular cluster with lung involvement of Behçet syndrome, although oral aphtae, arthritis, and uveitis are rarely found. Behçet syndrome is a multifactorial polygenic disease with genetic, epigenetic, environmental, and mostly immunological contributors. The different Behçet syndrome phenotypes are presumably based upon different genetic determinants involving more than one pathogenic pathway. Hughes-Stovin syndrome may have common pathways with fibromuscular dysplasias and other diseases evolving with vascular aneurysms. We describe a Hughes-Stovin syndrome case fulfilling the Behçet syndrome criteria. A MYLK variant of unknown significance was detected, along with other heterozygous mutations in genes that may impact angiogenesis pathways. We discuss the possible involvement of these genetic findings, as well as other potential common determinants of Behçet/Hughes-Stovin syndrome and aneurysms in vascular Behçet syndrome. Recent advances in diagnostic techniques, including genetic testing, could help diagnose a specific Behçet syndrome subtype and other associated conditions to personalize the disease management.
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Affiliation(s)
- Simona Manole
- Department of Radiology, “Niculae Stăncioiu” Heart Institute, 19-21 Calea Moților Street, 400001 Cluj-Napoca, Romania
- Department of Radiology, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Raluca Rancea
- Cardiology Department, Heart Institute “Niculae Stăncioiu”, 19-21 Calea Moților Street, 400001 Cluj-Napoca, Romania
| | - Romana Vulturar
- Department of Molecular Sciences, “Iuliu Hatieganu” University of Medicine and Pharmacy 6, Pasteur, 400349 Cluj-Napoca, Romania
- Cognitive Neuroscience Laboratory, University Babes-Bolyai, 30, Fântânele Street, 400294 Cluj-Napoca, Romania
- Correspondence:
| | - Siao-Pin Simon
- Department of Rheumatology, Emergency Clinical County Hospital Cluj, Centre for Rare Autoimmune and Autoinflammatory Diseases (ERN-ReCONNET), 2-4 Clinicilor Street, 400347 Cluj-Napoca, Romania
- Discipline of Rheumatology, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400347 Cluj-Napoca, Romania
| | - Adrian Molnar
- Department of Cardiovascular Surgery, Heart Institute “Niculae Stăncioiu”, 19-21 Calea Moților Street, 400001 Cluj-Napoca, Romania
- Department of Cardiovascular and Thoracic Surgery, “Iuliu Hatieganu” University of Medicine and Pharmacy, 8 Victor Babes Street, 400012 Cluj-Napoca, Romania
| | - Laura Damian
- Department of Rheumatology, Emergency Clinical County Hospital Cluj, Centre for Rare Autoimmune and Autoinflammatory Diseases (ERN-ReCONNET), 2-4 Clinicilor Street, 400347 Cluj-Napoca, Romania
- CMI Reumatologie Dr. Damian, 6-8 Petru Maior Street, 400002 Cluj-Napoca, Romania
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Snigdha M, Akter A, Amin MA, Islam MZ. Bioinformatics approach to analyse COVID-19 biomarkers accountable for generation of intracranial aneurysm in COVID-19 patients. INFORMATICS IN MEDICINE UNLOCKED 2023; 39:101247. [PMID: 37159621 PMCID: PMC10141791 DOI: 10.1016/j.imu.2023.101247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/17/2023] [Accepted: 04/17/2023] [Indexed: 05/11/2023] Open
Abstract
COVID-19 became a health emergency on January 30, 2020. SARS-CoV-2 is the causative agent of the coronavirus disease known as COVID-19 and can develop cardiometabolic and neurological disorders. Intracranial aneurysm (IA) is considered the most significant reason for hemorrhagic stroke,and it accounts for approximately 85% of all subarachnoid hemorrhages (SAH). Retinoid signaling abnormalities may explain COVID-19's pathogenesis with inhibition of AEH2, from which COVID-19 infection may enhance aneurysm formation and rupture due to abrupt blood pressure changes, endothelial cell injury, and systemic inflammation. The objective of this study was to investigate the potential biomarkers, differentially expressed genes (DEGs), and metabolic pathways associated with both COVID-19 and intracranial aneurysm (IA) using simulation databases like DIsGeNET. The purpose was to confirm prior findings and gain a comprehensive understanding of the underlying mechanisms that contribute to the development of these conditions. We combined the regulated genes to describe intracranial aneurysm formation in COVID-19. To determine DEGs in COVID-19 and IA patient tissues, we compared gene expression transcriptomic datasets from healthy and diseased individuals. There were 41 differentially expressed genes (DEGs) shared by both the COVID-19 and IA datasets (27 up-regulated genes and 14 down-regulated genes). Using protein-protein interaction analysis, we were able to identify hub proteins (C3, NCR1, IL10RA, OXTR, RSAD2, CD38, IL10RB, MX1, IL10, GFAP, IFIT3, XAF1, USP18, OASL, IFI6, EPSTI1, CMPK2, and ISG15), which were not described as key proteins for both COVID-19 and IA before. We also used Gene Ontology analysis (6 significant ontologies were validated), Pathway analysis (the top 20 were validated), TF-Gene interaction analysis, Gene miRNA analysis, and Drug-Protein interaction analysis methods to comprehend the extensive connection between COVID-19 and IA. In Drug-Protein interaction analysis, we have gotten the following three drugs: LLL-3348, CRx139, and AV41 against IL10 which was both common for COVID-19 and IA disease. Our study with different cabalistic methods has showed the interaction between the proteins and pathways with drug analysis which may direct further treatment development for certain diseases.
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Affiliation(s)
- Mahajabin Snigdha
- Department of Pharmacy, Islamic University, Kushtia, 7003, Bangladesh
| | - Azifa Akter
- Department of Pharmacy, Islamic University, Kushtia, 7003, Bangladesh
| | - Md Al Amin
- Department of Computer Science & Engineering, Prime University, Dhaka, 1216, Bangladesh
| | - Md Zahidul Islam
- Department of Information & Communication Technology, Islamic University, Kushtia, 7003, Bangladesh
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Sunderland K, Jiang J, Zhao F. Disturbed flow's impact on cellular changes indicative of vascular aneurysm initiation, expansion, and rupture: A pathological and methodological review. J Cell Physiol 2022; 237:278-300. [PMID: 34486114 PMCID: PMC8810685 DOI: 10.1002/jcp.30569] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/06/2021] [Accepted: 08/16/2021] [Indexed: 01/03/2023]
Abstract
Aneurysms are malformations within the arterial vasculature brought on by the structural breakdown of the microarchitecture of the vessel wall, with aneurysms posing serious health risks in the event of their rupture. Blood flow within vessels is generally laminar with high, unidirectional wall shear stressors that modulate vascular endothelial cell functionality and regulate vascular smooth muscle cells. However, altered vascular geometry induced by bifurcations, significant curvature, stenosis, or clinical interventions can alter the flow, generating low stressor disturbed flow patterns. Disturbed flow is associated with altered cellular morphology, upregulated expression of proteins modulating inflammation, decreased regulation of vascular permeability, degraded extracellular matrix, and heightened cellular apoptosis. The understanding of the effects disturbed flow has on the cellular cascades which initiate aneurysms and promote their subsequent growth can further elucidate the nature of this complex pathology. This review summarizes the current knowledge about the disturbed flow and its relation to aneurysm pathology, the methods used to investigate these relations, as well as how such knowledge has impacted clinical treatment methodologies. This information can contribute to the understanding of the development, growth, and rupture of aneurysms and help develop novel research and aneurysmal treatment techniques.
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Affiliation(s)
- Kevin Sunderland
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931
| | - Jingfeng Jiang
- Department of Biomedical Engineering, Michigan Technological University, Houghton, MI 49931,Corresponding Authors: Feng Zhao, 101 Bizzell Street, College Station, TX 77843-312, Tel : 979-458-1239, , Jingfeng Jiang, 1400 Townsend Dr., Houghton, MI 49931, Tel: 906-487-1943
| | - Feng Zhao
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843,Corresponding Authors: Feng Zhao, 101 Bizzell Street, College Station, TX 77843-312, Tel : 979-458-1239, , Jingfeng Jiang, 1400 Townsend Dr., Houghton, MI 49931, Tel: 906-487-1943
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8
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Zhang Y, Xu G, Wang P. Smoking, Hypertension, and GG Genotype of the IL-6 rs1800796 Polymorphism are Independent Risk Factors for Abdominal Aortic Aneurysm in Han Population. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2021; 14:1115-1121. [PMID: 34522122 PMCID: PMC8434934 DOI: 10.2147/pgpm.s328894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 08/20/2021] [Indexed: 11/23/2022]
Abstract
Background Recent researches have investigated the link between the rs1800796 polymorphism (−572G/C) in the interleukin-6 (IL-6) gene and the risk of abdominal aortic aneurysm (AAA). However, no Chinese studies have addressed the association between the risk of AAA and this polymorphism. Methods This case-control study included 153 AAA patients and 205 controls. Diabetes mellitus, hypertension, dyslipidemia, and coronary artery disease (CAD) status were collected. The AAA and control groups were 69.20 ± 7.56 and 68.50 ± 7.12 years old, respectively. Results The analysis revealed that the G allele and GG genotype of the IL-6 rs1800796 polymorphism were remarkedly correlated with an elevated risk of AAA. The GG genotype displayed an association with the risk of AAA after adjustment for gender, body mass index, age, drinking, and smoking. Subgroup analyses indicated that this polymorphism elevated the risk of AAA among males, individuals aged ≥70 years, smokers, drinkers, individuals with a body mass index (BMI) ≥25 kg/m2, patients without diabetes, and patients with hypertension. Univariate and multivariate analyses indicated that smoking, hypertension, and the GG genotype (rs1800796 polymorphism) were independently related with the risk of AAA. Conclusion The IL-6 rs1800796 polymorphism increases the risk of AAA. In addition, smoking, hypertension, and the GG genotype of the rs1800796 polymorphism are independent risk factors for AAA. Further studies of Chinese populations are needed to validate these findings.
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Affiliation(s)
- Yuchao Zhang
- Department of Vascular Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian City, 223300, People's Republic of China
| | - Gang Xu
- Department of Vascular Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian City, 223300, People's Republic of China
| | - Ping Wang
- Department of Vascular Surgery, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huaian City, 223300, People's Republic of China
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RNA Sequencing Data from Human Intracranial Aneurysm Tissue Reveals a Complex Inflammatory Environment Associated with Rupture. Mol Diagn Ther 2021; 25:775-790. [PMID: 34403136 DOI: 10.1007/s40291-021-00552-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Intracranial aneurysm (IA) rupture leads to deadly subarachnoid hemorrhages. However, the mechanisms leading to rupture remain poorly understood. Altered gene expression within IA tissue is linked to the pathobiology of aneurysm development and progression. Here, we analyzed expression patterns of control tissue samples and compared them to those of unruptured and ruptured IA tissue samples using data from the Gene Expression Omnibus (GEO). METHODS FASTQ files for 21 ruptured IAs, 21 unruptured IAs, and 16 control tissue samples were accessed from the GEO database. DESeq2 was used for differential expression analysis in three comparisons: unruptured IA versus control, ruptured IA versus control, and ruptured versus unruptured IA. Genes that were differentially expressed in multiple comparisons were evaluated to find those progressively increasing/decreasing from control to unruptured to ruptured. Significance was tested by either analysis of variance/Gabriel or Brown-Forsythe/Games Howell (p < 0.05 was considered significant). We used additional RNA sequencing and proteomics datasets to evaluate if our differentially expressed genes (DEGs) were present in other studies. Bioinformatics analyses were performed with g:Profiler and Ingenuity Pathway Analysis. RESULTS In total, we identified 1768 DEGs, of which 318 were found in multiple comparisons. Unruptured versus control reflected vascular remodeling processes, while ruptured versus control reflected inflammatory responses and cell activation/signaling. When comparing ruptured to unruptured IAs, we found massive activation of inflammation, inflammatory responses, and leukocyte responses. Of the 318 genes in multiple comparisons, 127 were found to be significant in the multi-cohort correlation analysis. Those that progressively increased (70 genes) were associated with immune system processes, while those that progressively decreased (38 genes) did not return any gene ontology terms. Many of our DEGs were also found in the other IA tissue sequencing studies. CONCLUSIONS We found unruptured IAs relate more to remodeling processes, while ruptured IAs reflect more inflammatory and immune responses.
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Muhammad S, Chaudhry SR, Dobreva G, Lawton MT, Niemelä M, Hänggi D. Vascular Macrophages as Therapeutic Targets to Treat Intracranial Aneurysms. Front Immunol 2021; 12:630381. [PMID: 33763073 PMCID: PMC7982735 DOI: 10.3389/fimmu.2021.630381] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/11/2021] [Indexed: 01/08/2023] Open
Abstract
Aneurysmal subarachnoid hemorrhage (aSAH) is a highly fatal and morbid type of hemorrhagic strokes. Intracranial aneurysms (ICAs) rupture cause subarachnoid hemorrhage. ICAs formation, growth and rupture involves cellular and molecular inflammation. Macrophages orchestrate inflammation in the wall of ICAs. Macrophages generally polarize either into classical inflammatory (M1) or alternatively-activated anti-inflammatory (M2)-phenotype. Macrophage infiltration and polarization toward M1-phenotype increases the risk of aneurysm rupture. Strategies that deplete, inhibit infiltration, ameliorate macrophage inflammation or polarize to M2-type protect against ICAs rupture. However, clinical translational data is still lacking. This review summarizes the contribution of macrophage led inflammation in the aneurysm wall and discuss pharmacological strategies to modulate the macrophageal response during ICAs formation and rupture.
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Affiliation(s)
- Sajjad Muhammad
- Department of Neurosurgery, Faculty of Medicine, Heinrich-Heine-University, Düsseldorf, Germany.,Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland.,Department of Anatomy and Developmental Biology, Medical Faculty Mannheim and European Center for Angioscience (ECAS), University of Heidelberg, Mannheim, Germany
| | - Shafqat Rasul Chaudhry
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Gergana Dobreva
- Department of Anatomy and Developmental Biology, Medical Faculty Mannheim and European Center for Angioscience (ECAS), University of Heidelberg, Mannheim, Germany
| | - Michael T Lawton
- Department of Neurosurgery, Barrow Brain and Spine, Barrow Neurological Institute, Phoenix, AZ, United States
| | - Mika Niemelä
- Department of Neurosurgery, Helsinki University Hospital, University of Helsinki, Helsinki, Finland
| | - Daniel Hänggi
- Department of Neurosurgery, Faculty of Medicine, Heinrich-Heine-University, Düsseldorf, Germany
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11
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Associations between Inflammatory Cytokine Gene Polymorphisms and Susceptibilities to Intracranial Aneurysm in Chinese Population. BIOMED RESEARCH INTERNATIONAL 2021; 2021:8865601. [PMID: 33511216 PMCID: PMC7826207 DOI: 10.1155/2021/8865601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 12/08/2020] [Accepted: 12/23/2020] [Indexed: 02/07/2023]
Abstract
Intracranial aneurysm (IA) is a complex disease caused by genetic and environmental factors. Evidence indicates that inflammation plays an important role in IA occurrence. We aimed to explore the associations between inflammatory cytokine gene polymorphisms and IA in a Chinese population. This study enrolled 768 participants of Han ethnicity, including 384 patients with IA and 384 healthy individuals. Sixteen single nucleotide polymorphisms (SNPs) of IL1, IL6, IL12, and TNF-α genes were genotyped using the Sequenom MassARRAY platform. Univariate and multivariate logistic regression analyses were used to analyze the associations. We found IL12B rs3181216 was significantly associated with IA in the recessive and additive models (OR = 0.46, 95% CI = 0.23–0.89, P = 0.022; OR = 0.74, 95% CI = 0.56–0.98, P = 0.034, respectively). TNF-α rs1799964 was associated with IA in dominant and additive models (OR = 0.67, 95% CI = 0.46–0.98, P = 0.041; OR = 0.71, 95% CI = 0.51–0.98, P = 0.034, respectively). IL1A rs17561 was associated with single IA susceptibility (dominant model: OR = 0.52, 95% CI = 0.31–0.85, P = 0.040). The IL12B rs3181216 polymorphism was associated with single IA susceptibility in the recessive model (OR = 0.41, 95% CI = 0.18–0.93, P = 0.033). The IL12B rs2195940 polymorphism was associated with multiple IAs susceptibility (dominant model: OR = 0.28, 95% CI = 0.09–0.89, P = 0.031; additive model: OR = 0.28, 95% CI = 0.09–0.90, P = 0.032). TNF-α rs1799964 was associated with multiple IAs susceptibility in the dominant model (OR = 0.54, 95% CI = 0.30–0.97, P = 0.040). No associations were found between other polymorphisms and IA susceptibility. Therefore, IL1A, IL12B, and TNF-α gene polymorphisms are associated with IA susceptibility in a Chinese population.
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Polymorphisms in the IL-6 and TNF-α gene are associated with an increased risk of abdominal aortic aneurysm. Int J Cardiol 2021; 329:192-197. [PMID: 33359288 DOI: 10.1016/j.ijcard.2020.12.051] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/20/2020] [Accepted: 12/14/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND An abdominal aortic aneurysm (AAA) is a complex disease of the aging population that is associated with inflammation and the cellular immune response. To investigate the influence of interleukin (IL)-6 and tumor necrosis factor (TNF)-α single nucleotide polymorphisms (SNPs) on the risk of AAA formation and progression, the frequency of AAA and its associated risk factors were determined. METHOD Four SNPs in the IL-6 (-174G/C, rs1800795; -572G/C, rs1800796) and TNF-α (-238G/A, rs361525; -308G/A, rs1800629) genes were studied by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in patients with AAA and healthy volunteers. The mRNA expression and plasma IL-6 and TNF-α levels were also determined. RESULTS A mutation detected in at least one allele of the IL-6 -174G/C SNP was associated with a 2-fold increased risk of AAA occurrence (OR: 2.08; 95% CI: 1.15-3.76; p = 0.014, in the dominant model). An increased risk of AAA incidence among heterozygous carriers of the TNF-α - 308G/A genotype was observed (OR: 2.06; 95% CI: 1.17-3.62; p = 0.011, in the overdominant model). The wild-type genotypes of the IL-6 -174G/C and the TNF-α -308G/A SNPs coexisted more frequently in healthy subjects than in AAA patients and was associated with decreased risk of AAA (p < 0.001). Moreover, elevated levels of IL-6 and TNF-α were associated with an increased risk of hypertension (p < 0.001 and p = 0.022, respectively). CONCLUSIONS The IL-6 -174G/C and the TNF-α -238G/A gene polymorphisms are associated with an increased risk of abdominal aortic aneurysm development.
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Giotta Lucifero A, Baldoncini M, Brambilla I, Rutigliano M, Savioli G, Galzio R, Campero A, Lawton MT, Luzzi S. Gene Polymorphisms Increasing the Risk of Intracranial Aneurysms: Interleukin-6 -174G>C and -572G>C (Part II). ACTA BIO-MEDICA : ATENEI PARMENSIS 2021; 92:e2021420. [PMID: 35441611 PMCID: PMC9179066 DOI: 10.23750/abm.v92is4.12669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/27/2022] [Indexed: 11/25/2022]
Abstract
Introduction The interleukin-6 (IL-6), a proinflammatory cytokine, supports the adaptive immune response and regulates inflammatory processes. The -174 G>C and -572 G>C promoter polymorphisms of the IL-6 gene take part in the pathogenesis of intracranial aneurysms (IAs) and influence the clinical presentation of subarachnoid hemorrhage. This meta-analysis purposes to evaluate whether and which IL-6 allelic variations are related to a risk of IAs formation. Methods A PRISMA-based literature search was performed on the PubMed/Medline and Web of Science databases. The keywords used were "interleukin-6," "IL-6," "polymorphism," "interleukin-6 genotype," combined with "intracranial aneurysms" and "subarachnoid hemorrhage." Only human case-control studies, with a study (IAs) and a control group, written in English, and published in the last 15 years were selected. A meta-analysis was performed, estimating odds ratios and 95% confidence intervals in fixed- or random-effects models, as applicable. Statistical analysis was conducted with RevMan 5.0 software. Results 9 studies were eligible. No associations were found between -174 G>C polymorphisms and IAs susceptibility. Notable results were reported by the analysis of -572G>C polymorphisms. -572GG/GC/CC genotypes were strongly related to IAs occurrence with a statistical significance of p=0.03, p=0.0009, and p=0.00001, respectively. Conclusion A higher incidence of -572G>C promoter polymorphisms were demonstrated in the IAs group, highlighting the pivotal role of inflammatory genes in the natural history of brain aneurysms. Additional studies are required considering the racial heterogenicity and the need to widen the population sample.
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Affiliation(s)
- Alice Giotta Lucifero
- Neurosurgery Unit, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Matias Baldoncini
- Department of Neurological Surgery, Hospital San Fernando, Buenos Aires, Argentina
| | - Ilaria Brambilla
- Pediatric Clinic, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy
| | - Monica Rutigliano
- Department of Emergency and Organ Transplantation, Urology, Andrology and Kidney Transplantation Unit, University of Bari, Bari, Italy
| | - Gabriele Savioli
- Emergency Medicine and Surgery, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
| | - Renato Galzio
- Neurosurgery Unit, Maria Cecilia Hospital, Cotignola, Italy
| | - Alvaro Campero
- Servicio de Neurocirugia, Universidad Nacional de Tucuman, Argentina,Department of Neurosurgery, Hospital Padilla, San Miguel de Tucuman, Tucuman, Argentina
| | - Michael T. Lawton
- Department of Neurosurgery, Barrow Neurological Institute (BNI), United States
| | - Sabino Luzzi
- Neurosurgery Unit, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy,Neurosurgery Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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Giotta Lucífero A, Baldoncini M, Foiadelli T, Brambilla I, Savioli G, Galzio R, Campero A, Lawton MT, Luzzi S. Gene Polymorphisms Increasing the Risk of Intracranial Aneurysms: Interleukin-1β -511C>T (Part I). ACTA BIO-MEDICA : ATENEI PARMENSIS 2021; 92:e2021419. [PMID: 35441612 PMCID: PMC9179052 DOI: 10.23750/abm.v92is4.12668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 01/27/2022] [Indexed: 11/22/2022]
Abstract
Introduction Intracranial aneurysms (IAs) are devastating cerebrovascular diseases with multifactorial etiology. The role of inflammation is indisputable, and interleukins are pivotal in supporting local inflammatory pathways and endothelial dysfunction at the aneurysm wall. In the light of insufficient evidence reported in the literature, this meta-analysis was aimed to investigate the genetic linkage between IL-1β (rs16944) -511C>T polymorphisms and IAs susceptibility. Methods A comprehensive online literature review was completed using the PubMed/Medline and Web of Science databases in accordance with the PRISMA guidelines. "Interleukin-1β," "IL-1β," "polymorphism," "intracranial aneurysm," and "subarachnoid hemorrhage" were the main keywords. Only human case-control studies, published from 2005 to 2021, written in English or translated, were screened. In the statistical analysis, we applied the fixed- and random-effect models, according to the level of heterogeneity, to assess the odds ratios (ORs) and 95% confidence intervals (CIs). RevMan 5.0 software was used for the statistics. Results Only 4 studies were eligible, with a total of 2070 patients, 1050 of which were assigned to the study group. Combined results showed a statistically significant association between the risk of IAs and -511CC (OR=0.79, 95% CI [0.65-0.95], p=0.01), and CT (OR=0.69, 95% CI [0.58-0.82], p<0.0001; OR=0.71, 95% CI [0.55-0.93], p=0.01) allele variations, both in the fixed- and random- models. No correlation was identified for the -511TT genotype (p=0.42; p=0.78). All the texts showed a low level of publication bias. Conclusion The present meta-analysis proved a potential role of IL-1β -511CC/CT genotypes in the pathogenesis of IAs. Additional studies are imperative to explain the underlying neuroimmune mechanisms, also allowing tailoring the potential inflammatory-target therapies for IAs.
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Affiliation(s)
- Alice Giotta Lucífero
- Neurosurgery Unit, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy
| | - Matias Baldoncini
- Department of Neurological Surgery, Hospital San Fernando, Buenos Aires, Argentina
| | - Thomas Foiadelli
- Pediatric Clinic, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy
| | - Ilaria Brambilla
- Pediatric Clinic, IRCCS Policlinico San Matteo Foundation, University of Pavia, Pavia, Italy
| | - Gabriele Savioli
- Emergency Medicine and Surgery, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
| | - Renato Galzio
- Neurosurgery Unit, Maria Cecilia Hospital, Cotignola, Italy
| | - Alvaro Campero
- Servicio de Neurocirugía, Universidad Nacional de Tucumán; Argentina,Department of Neurosurgery, Hospital Padilla, San Miguel de Tucumán, Tucumán, Argentina
| | - Michael T. Lawton
- Department of Neurosurgery, Barrow Neurological Institute (BNI), United States
| | - Sabino Luzzi
- Neurosurgery Unit, Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Pavia, Italy,Neurosurgery Unit, Department of Surgical Sciences, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
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15
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Wang J, Wei L, Lu H, Zhu Y. Roles of inflammation in the natural history of intracranial saccular aneurysms. J Neurol Sci 2020; 424:117294. [PMID: 33799211 DOI: 10.1016/j.jns.2020.117294] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 12/15/2020] [Accepted: 12/23/2020] [Indexed: 12/18/2022]
Abstract
Aneurysmal subarachnoid hemorrhage is caused by intracranial aneurysm (IA) rupture and results in high rates of mortality and morbidity. Factors contributing to IA generation, growth and rupture can involve genetics, injury, hemodynamics, environmental factors, and inflammation, in which inflammatory factors are believed to play central roles in the whole natural history. Inflammatory reactions that contribute to IA development may involve synthesis of many functional proteins and expression of genes induced by changes of blood flow, external stimuli such as smoking, internal balance such as hormonal status changes, and blood pressure. Meanwhile, inflammatory reactions itself can evoke inflammatory cytokines release and aggregation such as MMPs, MCP-1, TNF-α and ZO-1, directly or indirectly promoting aneurysm growth and rupture. However, the details of these inflammatory reactions and their action on inflammatory chemokines are still unknown. Moreover, some agents with the function of anti-inflammation, lipid-lowering, antihypertension or inflammatory factor inhibition may have the potential benefit to reduce the risk of aneurysm development or rupture in a group of population despite the underlying mechanism remains unclear. Consequently, we reviewed the potential inflammatory responses and their mechanisms contributing to aneurysm development and rupture and sought intervention targets that may prevent IA rupture or generation.
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Affiliation(s)
- Jienan Wang
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road; Shanghai 200233, China
| | - Liming Wei
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road; Shanghai 200233, China
| | - Haitao Lu
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road; Shanghai 200233, China.
| | - Yueqi Zhu
- Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, No. 600, Yishan Road; Shanghai 200233, China.
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Long non-coding RNA TCONS_00000200 as a non-invasive biomarker in patients with intracranial aneurysm. Biosci Rep 2020; 39:221064. [PMID: 31710082 PMCID: PMC6879357 DOI: 10.1042/bsr20182224] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 10/30/2019] [Accepted: 11/08/2019] [Indexed: 12/12/2022] Open
Abstract
We performed long non-coding RNA (lncRNA) microarray assay to identify lncRNAs with differential expression between patients with intracranial aneurysm (IA) and healthy control individuals to evaluate their potential use as biomarkers of IA. Arraystar Human lncRNA Microarray v3.0 was performed to identify differentially expressed lncRNAs and mRNAs in plasma samples (4 ml). lncRNAs with the most pronounced differential expression were used to select gene markers, and results were validated by quantitative reverse-transcription polymerase chain reaction (qRT-PCR). Plasma levels of TCONS_00000200 (fold change: 2.28) and ENST00000511927 (fold change: 2.50) were significantly higher in IA patients than in healthy individuals (P<0.001), and plasma levels of ENST00000421997 (fold change: 0.45) and ENST00000538202 (fold change: 0.43) were significantly lower in IA patients than in healthy individuals (P<0.001). qRT-PCR confirmed the same trends of up- and down-regulation of these four lncRNAs. A receiver operating characteristic (ROC) curve for TCONS_00000200 showed that the area under the curve (AUC) was 0.963 (95% confidence interval, 0.919–1.000), optimal cut-off point was 0.0081, sensitivity was 90.0%, and specificity was 96.7%. These results indicate that the lncRNA TCONS_00000200 is differentially expressed in the plasma of IA patients and could serve as a biomarker of IA.
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Thiarawat P, Jahromi BR, Kozyrev DA, Intarakhao P, Teo MK, Choque-Velasquez J, Niemelä M, Hernesniemi J. Are Fetal-Type Posterior Cerebral Arteries Associated With an Increased Risk of Posterior Communicating Artery Aneurysms? Neurosurgery 2020; 84:1306-1312. [PMID: 29788502 DOI: 10.1093/neuros/nyy186] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 04/11/2018] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Fetal-type posterior cerebral arteries (F-PCAs) might result in alterations in hemodynamic flow patterns and may predispose an individual to an increased risk of posterior communicating artery aneurysms (PCoAAs). OBJECTIVE To determine the association between PCoAAs and the presence of ipsilateral F-PCAs. METHODS We retrospectively reviewed the radiographic findings from 185 patients harboring 199 PCoAAs that were treated at our institution between 2005 and 2015. Our study population consisted of 4 cohorts: (A) patients with 171 internal carotid arteries (ICAs) harboring unilateral PCoAAs; (B) 171 unaffected ICAs in the same patients from the first group; (C) 28 ICAs of 14 patients with bilateral PCoAAs; and (D) 180 ICAs of 90 patients with aneurysms in other locations. We then determined the presence of ipsilateral F-PCAs and recorded all aneurysm characteristics. RESULTS Group A had the highest prevalence of F-PCAs (42%) compared to 19% in group B, 3% in group C, and 14% in group D (odds ratio A : B = 3.041; A : C = 19.626; and A : D = 4.308; P < .001). PCoAAs were associated with larger diameters of the posterior communicating arteries (median value 1.05 vs 0.86 mm; P = .001). The presence of F-PCAs was associated with larger sizes of the aneurysm necks (median value 3.3 vs 3.0 mm; P = .02). CONCLUSION PCoAAs were associated with a higher prevalence of ipsilateral F-PCAs. This variant was associated with larger sizes of the aneurysm necks but was not associated with the sizes of the aneurysm domes or with their rupture statuses.
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Affiliation(s)
- Peeraphong Thiarawat
- Department of Neurosurgery, Helsinki University Hospital, Helsinki, Finland.,De-partment of Surgery, Naresuan University, Phitsanulok, Thailand
| | | | - Danil A Kozyrev
- Department of Neurosurgery, Helsinki University Hospital, Helsinki, Finland.,Department of Paediatric Neurology and Neurosurgery, North-western State Medical University, St. Petersburg, Russia
| | - Patcharin Intarakhao
- Department of Neurosurgery, Helsinki University Hospital, Helsinki, Finland.,Department of Anesthesiology, Naresuan University, Phitsanulok, Thailand
| | - Mario K Teo
- Bristol Institute of Clinical Neurosciences, North Bristol University Hospital, Bristol, United Kingdom
| | | | - Mika Niemelä
- Department of Neurosurgery, Helsinki University Hospital, Helsinki, Finland
| | - Juha Hernesniemi
- Department of Neurosurgery, Helsinki University Hospital, Helsinki, Finland
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Chen L, Bai J, Li Y. The Change of Interleukin-6 Level-Related Genes and Pathways Induced by Exercise in Sedentary Individuals. J Interferon Cytokine Res 2020; 40:236-244. [PMID: 32401165 DOI: 10.1089/jir.2019.0169] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Sedentary behavior increases the risk of many chronic disorders, in addition, these chronic diseases are associated with elevated markers interleukin-6 (IL-6). Increasing evidence indicates that physical activity can prevent chronic inflammatory disease. However, the effect of exercise on sedentary individuals with disparate basal serum IL-6 level was not well elucidated. In this study, the gene expression profile of GES12384 was downloaded from the Gene Expression Omnibus (GEO) database. This data set contained 12 sedentary middle-aged men (6 high IL-6 and 6 low IL-6 level), and their blood samples were taken in the pre-exercise period and at the end of 24 weeks of exercise. The differentially expressed genes (DEGs) of 24 weeks group were identified, followed by functional enrichment analysis. Subsequently, protein-protein interaction (PPI) network and transcription factors (TFs)-DEGs network were constructed. A total of 193 DEGs were identified between high and low IL-6 level in the 24 weeks group. Functional enrichment analysis showed that DEGs were mainly involved in African trypanosomiasis pathway. PPI network revealed that the hub genes included C-C motif chemokine receptor 7 (CCR7), hemoglobin subunit delta (HBD), and interferon gamma (IFNG). Subnetworks analysis indicated that these genes were relevant to immune response, and participated in African trypanosomiasis pathway. The TF targets network found that myocyte enhancer factor 2A (MEF2A) was a key regulatory factor. In conclusion, the inflammation-related genes (CCR7, HBD, and IFNG) in sedentary individuals could be affected by exercise, and the identified DEGs and TFs in this study promoted our understanding of exercise inhibited the development of chronic disease. [Figure: see text].
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Affiliation(s)
- Lei Chen
- Department of Physical Education, Shanghai Jiao Tong University, Shanghai, China
| | - Jun Bai
- Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanfei Li
- Office of Academic Research, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
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Hu L, Li B, Liao X, Yan J. Polymorphisms of Inflammatory Cytokine Genes and Risk for Intracranial Aneurysm: A Systematic Review and Meta-Analysis. Yonsei Med J 2020; 61:391-399. [PMID: 32390362 PMCID: PMC7214114 DOI: 10.3349/ymj.2020.61.5.391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 03/20/2020] [Indexed: 01/21/2023] Open
Abstract
PURPOSE Inflammatory cytokines are thought to be involved in the pathogenesis of intracranial aneurysm (IA), although results among studies in the literature are inconsistent. This article sought to review studies on the associations among polymorphisms in inflammatory cytokine genes and IA risk and to provide recommendations for future research. MATERIALS AND METHODS A systematic search of PubMed, Embase, and Web of Science was conducted up to August 4, 2019. The associations between polymorphisms of inflammatory cytokine genes and IA risk were estimated by pooled odds ratios (ORs) and 95% confidence intervals (CIs). Subgroup analyses were performed according to race. Qualitative systematic review was conducted for variants that were studied in only one study. All analyses were performed using STATA 12.0. RESULTS 13 studies investigating the associations between polymorphisms in five inflammatory cytokine genes (TNF-α, IL-1α, IL-1β, IL6, and IL-12B) and IA were reviewed. Combined results showed that the A allele of TNF-α rs1800629 polymorphism has a protective effect against IA (dominant model: OR=0.65, 95% CI=0.47-0.89, p=0.007). No associations were identified between polymorphisms in IL-1α rs1800587, IL-1β rs16944, IL6 rs1800795 and rs1800796, or IL-12B rs3212227 and IA risk. CONCLUSION This review demonstrated an association between TNF-α rs1800629 polymorphism and IA in Caucasians, illustrating the potentially important role of genes involved in inflammation in IA.
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Affiliation(s)
- Liming Hu
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Changsha, China
| | - Bingyang Li
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Changsha, China
| | - Xin Liao
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Changsha, China
| | - Junxia Yan
- Department of Epidemiology and Health Statistics, XiangYa School of Public Health, Central South University, Changsha, China.
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Sindura KP, Banerjee M. An Immunological Perspective to Non-syndromic Sensorineural Hearing Loss. Front Immunol 2019; 10:2848. [PMID: 31921123 PMCID: PMC6919260 DOI: 10.3389/fimmu.2019.02848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 11/19/2019] [Indexed: 12/20/2022] Open
Abstract
Conventionally the etiology of congenital Non-Syndromic Hearing Loss has been attributed to mutations in the genes involved in ion homeostasis or the structural compartments of the inner ear. However, this contributes to only a part of the problem, as still the determinants for a large majority of the Non-Syndromic Hearing loss seems to be an enigma. Evidences indicate that pathogens like Rubella, Cytomegalovirus, and many other infections can also result in congenital hearing loss. Additionally, there are variety of factors other than the viral mediators, that can act as stressors to trigger an altered immune response, during the gestational period of the mother. It is also known that non-specific stimulation of the immune system can mimic an infection status. This indicates a strong role for environmental factors toward their contribution to the pathology, possibly by influencing the host immune response. These varieties of known or unknown environmental factors interact with the susceptible variants in immune response genes in defining the threshold for protection or infection in an individual. Considering this background we propose to present this perspective that threshold of the host immune response during the prenatal conditions, in response to environmental stimulus, might be determined by the susceptible variants in immune response genes. This in turn can directly or indirectly influence the genes involved in maintaining the structural components or ion homeostasis, resulting in hearing loss. The threshold of immune response alterations may be heavily dependent on the immunogenetic profile of the mother or the fetus.
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Affiliation(s)
- K P Sindura
- Neurobiology and Genetics Division, Rajiv Gandhi Center for Biotechnology, Thiruvananthapuram, India
| | - Moinak Banerjee
- Neurobiology and Genetics Division, Rajiv Gandhi Center for Biotechnology, Thiruvananthapuram, India
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21
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Liu L, Zhang Q, Xiong XY, Gong QW, Liao MF, Yang QW. TLR4 gene polymorphisms rs11536889 is associated with intracranial aneurysm susceptibility. J Clin Neurosci 2018; 53:165-170. [PMID: 29754966 DOI: 10.1016/j.jocn.2018.04.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 04/02/2018] [Accepted: 04/30/2018] [Indexed: 01/07/2023]
Abstract
Intracranial aneurysm (IA) is a common lesion which often present asymptomatic until the time of rupture and result in subarachnoid hemorrhage (SAH). The pathogenesis of IA formation is complex and is influenced by both genetic and environmental risk factors. For exploring the detailed molecular and cellular mechanisms involved in the pathogenesis of IA, recent studies indicated inflammatory pathways and their genetic variants may as potential biomarkers. In this study, functionally relevant polymorphisms in the toll-like receptor 4 (TLR4) were screened in 330 IA patients and 313 controls from a Han Chinese population. Eight single nucleotide gene polymorphisms (SNPs) genotyped by the Improved Multiple Ligase Detection Reaction (iMLDR) method. Our results indicated that the presence of the minor allele (C) of the TLR4 SNP rs11536889 was associated with a decreased risk of IA (C vs. G, OR = 0.731; 95% CI 0.567-0.943; P = 0.017). This association was also present at the genotype level in a codominant model (GC vs. GG, OR = 0.447; 95% CI 0.226-0.884; P = 0.020) and a recessive model (CC vs. GG + GC, OR = 0.489; 95% CI 0.250-0.955; P = 0.035). In summary, we firstly found that the TLR4 SNP rs11536889 was significantly associated with the susceptibility of IA. Our results indicated TLR4 SNP rs11536889 may be a marker for IA risk, though the exact functional roles of TLR4 SNP rs11536889 in IA formation are still not very clear.
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Affiliation(s)
- Liang Liu
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Qin Zhang
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Xiao-Yi Xiong
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Qiu-Wen Gong
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Mao-Fan Liao
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Qing-Wu Yang
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China.
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Brotis AG, Tasiou A, Giannis T, Paschalis A, Fountas KN. Collagen type-I A2 gene polymorphisms and susceptibility to intracranial aneurysms: a meta-analysis of genetic association studies. Int J Neurosci 2017; 128:640-653. [PMID: 29164999 DOI: 10.1080/00207454.2017.1408616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND The development, evolution and rupture of intracranial aneurysms are in part related to genetic factors. The role of collagen type-I a2 genetic polymorphisms has not been clarified yet. MATERIAL AND METHODS A meta-analysis was realized by means of a genotype model-fitting process (allele contrast, recessive, dominant, additive and co-dominant), and a model-free approach using the generalized odds ratio. The latter was assessed in association to the degree of dominance (h-index). RESULTS No statistically significant association was documented between EX28 G>C collagen type-I a2 variant and intracranial aneurysms (generalized odds ratio = 1.23, 95% confidence interval = 0.57, 2.63). Significant associations between INT46 T>G collagen type I a2 variant and intracranial aneurysms were documented in three models, the dominant [0.52 (0.38, 069)], the co-dominant [0.50 (0.32, 0.78)] and the allele contrast models [0.63 (0.49, 0.82)]. The generalized odds ratio was estimated to be as high as 1.94 (1.23, 3.06). The degree of dominance (h-index = -1.54) indicated that the TG genotype was characterized by lower risk of developing intracranial aneurysms compared to the TT genotype. CONCLUSIONS The available literature data demonstrated that there is no association of collagen type-(2a) and intracranial aneurysms, through EX28 G>C (rs42524) polymorphism according to the model-fitting process and the model-free approach. Regarding the INT46 T>G (rs2621215) polymorphisms, the latter models indicated that there could be a protective effect of the G-allele against the development of intracranial aneurysms. However, the majority of studies are from East Asia, therefore the results are applicable primarily to that patient population.
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Affiliation(s)
- Alexandros G Brotis
- a Department of Neurosurgery , University Hospital of Larissa , Larissa , Greece
| | - Anastasia Tasiou
- a Department of Neurosurgery , University Hospital of Larissa , Larissa , Greece
| | - Theofanis Giannis
- a Department of Neurosurgery , University Hospital of Larissa , Larissa , Greece
| | - Athanasios Paschalis
- a Department of Neurosurgery , University Hospital of Larissa , Larissa , Greece
| | - Kostas N Fountas
- a Department of Neurosurgery , University Hospital of Larissa , Larissa , Greece
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23
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Association of TNF-α-3959T/C Gene Polymorphisms in the Chinese Population with Intracranial Aneurysms. J Mol Neurosci 2017; 63:349-354. [PMID: 29027627 DOI: 10.1007/s12031-017-0985-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/04/2017] [Indexed: 11/26/2022]
Abstract
Recent studies have demonstrated that cytokines play an important role in the pathogenesis of intracranial aneurysm (IA). Tumor necrosis factor-α (TNF-α) is an important proinflammatory cytokine, which was shown to influence the development of IA, but there is no research data from China. Hence, the purpose of this study was to explore the relationship between TNF-α polymorphisms and IA in China. The association of genetic variants of TNF-α gene expression was investigated in a Chinese population with IA. The TNF-α-3959T>C(rs1799964), 4127C>A(rs1800630), 4133C>T(rs1799724), 4184C>T(rs4248158), and 4752G>A(rs361525) gene polymorphisms in 192 IA cases and 112 controls were analyzed using polymerase chain reaction (PCR). Differences in genotype and allele frequencies between patients and controls were tested. There were no significant differences in 4127C>A (p = 0.072), 4133C>T (p = 0.373), 4184C>T (p = 0.749), and 4752G>A (p = 0.184) genotype frequencies between the IA group and the control group. But this case-control association study revealed that TNF-α-3959T>C (p < 0.001) was significantly associated with increased risk of IA. These results suggested that a novel TNF-α locus was found to be closely correlated with the occurrence of IA in Chinese.
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24
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Liao MF, Gong QW, Liu L, Xiong XY, Zhang Q, Gong CX, Yang QW. Association between polymorphism of SMAD3 gene and risk of sporadic intracranial arterial aneurysms in the Chinese Han population. J Clin Neurosci 2017; 47:269-272. [PMID: 28988651 DOI: 10.1016/j.jocn.2017.09.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 08/24/2017] [Accepted: 09/17/2017] [Indexed: 11/16/2022]
Abstract
Intracranial arterial aneurysms (IAAs) are locally abnormal dilations of the cerebral arteries and often result in subarachnoid hemorrhages (SAH). Genetic, molecular and cellular mechanisms of sporadic IAAs forms are poorly understood. In this study, we investigate the association between mothers against decapentaplegic homolog 3 (SMAD3) genotypes and the risk of sporadic intracranial arterial aneurysms among the Chinese Han population. A case-control study was conducted examining 330 IAA patients and 313 controls. There were eight single nucleotide polymorphisms of SMAD3 selected and genotyped using the polymerase chain reaction-ligase detection reaction (PCR-LDR) method. Our results indicated that SMAD3 rs1065080 polymorphism was associated with a risk of IAAs in a codominant model (GA vs GG, OR=1.433; 95% CI 1.030-1.994; P=0.032). In summary, we observed that SMAD3 rs1065080 single nucleotide gene polymorphisms were significantly associated with patient susceptibility to IAAs.
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Affiliation(s)
- Mao-Fan Liao
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Qiu-Wen Gong
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Liang Liu
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Xiao-Yi Xiong
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Qin Zhang
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Chang-Xiong Gong
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China
| | - Qing-Wu Yang
- Department of Neurology, Xinqiao Hospital, The Third Military Medical University, No. 183, Xinqiao Main Street, Shapingba District, Chongqing 400037, China.
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25
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Maekawa H, Tada Y, Yagi K, Miyamoto T, Kitazato KT, Korai M, Satomi J, Hashimoto T, Nagahiro S. Bazedoxifene, a selective estrogen receptor modulator, reduces cerebral aneurysm rupture in Ovariectomized rats. J Neuroinflammation 2017; 14:197. [PMID: 28969701 PMCID: PMC5625708 DOI: 10.1186/s12974-017-0966-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 09/18/2017] [Indexed: 12/11/2022] Open
Abstract
Background Estrogen deficiency is thought to be responsible for the higher frequency of aneurysmal subarachnoid hemorrhage in post- than premenopausal women. Estrogen replacement therapy appears to reduce this risk but is associated with significant side effects. We tested our hypothesis that bazedoxifene, a clinically used selective estrogen receptor (ER) modulator with fewer estrogenic side effects, reduces cerebral aneurysm rupture in a new model of ovariectomized rats. Methods Ten-week-old female Sprague-Dawley rats were subjected to ovariectomy, hemodynamic changes, and hypertension to induce aneurysms (ovariectomized aneurysm rats) and treated with vehicle or with 0.3 or 1.0 mg/kg/day bazedoxifene. They were compared with sham-ovariectomized rats subjected to hypertension and hemodynamic changes (HT rats). The vasoprotective effects of bazedoxifene and the mechanisms underlying its efficacy were analyzed. Results During 12 weeks of observation, the incidence of aneurysm rupture was 52% in ovariectomized rats. With no effect on the blood pressure, treatment with 0.3 or 1.0 mg/kg/day bazedoxifene lowered this rate to 11 and 17%, almost the same as in HT rats (17%). In ovariectomized rats, the mRNA level of ERα, ERβ, and the tissue inhibitor of metalloproteinase-2 was downregulated in the cerebral artery prone to rupture at 5 weeks after aneurysm induction; the mRNA level of interleukin-1β and the matrix metalloproteinase-9 was upregulated. In HT rats, bazedoxifene restored the mRNA level of ERα and ERβ and decreased the level of interleukin-1β and matrix metalloproteinase-9. These findings suggest that bazedoxifene was protective against aneurysmal rupture by alleviating the vascular inflammation and degradation exacerbated by the decrease in ERα and ERβ. Conclusions Our observation that bazedoxifene decreased the incidence of aneurysmal rupture in ovariectomized rats warrants further studies to validate this response in humans. Electronic supplementary material The online version of this article (10.1186/s12974-017-0966-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hidetsugu Maekawa
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan.
| | - Yoshiteru Tada
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Kenji Yagi
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Takeshi Miyamoto
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Keiko T Kitazato
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Masaaki Korai
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Junichiro Satomi
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Tomoki Hashimoto
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, 1001 Potrero Ave, SFGH 1, San Francisco, CA, 94110, USA
| | - Shinji Nagahiro
- Department of Neurosurgery, Institute of Biomedical Sciences, Tokushima University Graduate School, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
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26
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Garcia JM, Stillings SA, Leclerc JL, Phillips H, Edwards NJ, Robicsek SA, Hoh BL, Blackburn S, Doré S. Role of Interleukin-10 in Acute Brain Injuries. Front Neurol 2017; 8:244. [PMID: 28659854 PMCID: PMC5466968 DOI: 10.3389/fneur.2017.00244] [Citation(s) in RCA: 159] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 05/17/2017] [Indexed: 12/23/2022] Open
Abstract
Interleukin-10 (IL-10) is an important anti-inflammatory cytokine expressed in response to brain injury, where it facilitates the resolution of inflammatory cascades, which if prolonged causes secondary brain damage. Here, we comprehensively review the current knowledge regarding the role of IL-10 in modulating outcomes following acute brain injury, including traumatic brain injury (TBI) and the various stroke subtypes. The vascular endothelium is closely tied to the pathophysiology of these neurological disorders and research has demonstrated clear vascular endothelial protective properties for IL-10. In vitro and in vivo models of ischemic stroke have convincingly directly and indirectly shown IL-10-mediated neuroprotection; although clinically, the role of IL-10 in predicting risk and outcomes is less clear. Comparatively, conclusive studies investigating the contribution of IL-10 in subarachnoid hemorrhage are lacking. Weak indirect evidence supporting the protective role of IL-10 in preclinical models of intracerebral hemorrhage exists; however, in the limited number of clinical studies, higher IL-10 levels seen post-ictus have been associated with worse outcomes. Similarly, preclinical TBI models have suggested a neuroprotective role for IL-10; although, controversy exists among the several clinical studies. In summary, while IL-10 is consistently elevated following acute brain injury, the effect of IL-10 appears to be pathology dependent, and preclinical and clinical studies often paradoxically yield opposite results. The pronounced and potent effects of IL-10 in the resolution of inflammation and inconsistency in the literature regarding the contribution of IL-10 in the setting of acute brain injury warrant further rigorously controlled and targeted investigation.
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Affiliation(s)
- Joshua M Garcia
- College of Medicine, University of Florida, Gainesville, FL, United States
| | | | - Jenna L Leclerc
- Department of Anesthesiology, College of Medicine, Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, United States.,Department of Neuroscience, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Harrison Phillips
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States
| | - Nancy J Edwards
- Department of Neurology, University of California, San Francisco, CA, United States.,Department of Neurosurgery, University of California, San Francisco, CA, United States
| | - Steven A Robicsek
- Department of Anesthesiology, University of Florida, Gainesville, FL, United States.,Department of Neurosurgery, University of Florida, Gainesville, FL, United States.,Department of Neuroscience, University of Florida, Gainesville, FL, United States
| | - Brian L Hoh
- Department of Neurosurgery, University of Florida, Gainesville, FL, United States
| | - Spiros Blackburn
- Department of Neurosurgery, University of Texas, Houston, TX, United States
| | - Sylvain Doré
- Department of Anesthesiology, College of Medicine, Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL, United States.,Department of Neuroscience, College of Medicine, University of Florida, Gainesville, FL, United States.,Department of Neurology, Center for Translational Research in Neurodegenerative Disease, McKnight Brain Institute, University of Florida, Gainesville, FL, United States.,Department of Psychology, Center for Translational Research in Neurodegenerative Disease, McKnight Brain Institute, University of Florida, Gainesville, FL, United States.,Department of Psychiatry, Center for Translational Research in Neurodegenerative Disease, McKnight Brain Institute, University of Florida, Gainesville, FL, United States.,Department of Pharmaceutics, Center for Translational Research in Neurodegenerative Disease, McKnight Brain Institute, University of Florida, Gainesville, FL, United States
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27
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Wang K, Wang X, Lv H, Cui C, Leng J, Xu K, Yu G, Chen J, Cong P. Identification of the miRNA-target gene regulatory network in intracranial aneurysm based on microarray expression data. Exp Ther Med 2017; 13:3239-3248. [PMID: 28587396 PMCID: PMC5450516 DOI: 10.3892/etm.2017.4378] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 01/26/2017] [Indexed: 01/02/2023] Open
Abstract
Intracranial aneurysm (IA) remains one of the most devastating neurological conditions. However, the pathophysiology of IA formation and rupture still remains unclear. The purpose of the present study was to identify the crucial microRNA (miRNA/miR) and genes involved in IAs and elucidate the mechanisms underlying the development of IAs. In the present study, novel miRNA regulation activities in IAs were investigated through the integration of public gene expression data of miRNA and mRNA using the Gene Expression Omnibus database, combined with bioinformatics prediction. A total of 15 differentially expressed miRNA and 1,447 differentially expressed mRNA between IAs and controls were identified. A number of miRNA-target gene pairs (770), whose expression levels were inversely correlated, were used to construct a regulatory network of miRNA-target genes in IAs. The biological functions and pathways of these target genes were revealed to be associated with IAs. Specific miRNA and genes, such as hsa-let-7f, hsa-let-7d, hsa-miR-7, RPS6KA3, TSC1 and IGF1 may possess key roles in the development of IAs. The integrated analysis in the present study may provide insights into the understanding of underlying molecular mechanisms of IAs and novel therapeutic targets.
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Affiliation(s)
- Kezhen Wang
- Department of Neurosurgery, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116033, P.R. China
| | - Xinmin Wang
- Department of Neurosurgery, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116033, P.R. China
| | - Hongzhu Lv
- Department of Neurosurgery, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116033, P.R. China
| | - Chengzhi Cui
- Department of Neurosurgery, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116033, P.R. China
| | - Jiyong Leng
- Department of Neurosurgery, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116033, P.R. China
| | - Kai Xu
- Dalian Medical University Graduate School, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Guosong Yu
- Dalian Medical University Graduate School, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Jianwei Chen
- Dalian Medical University Graduate School, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Peiyu Cong
- Department of Neurosurgery, Dalian Municipal Central Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116033, P.R. China
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28
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Sawyer DM, Pace LA, Pascale CL, Kutchin AC, O'Neill BE, Starke RM, Dumont AS. Lymphocytes influence intracranial aneurysm formation and rupture: role of extracellular matrix remodeling and phenotypic modulation of vascular smooth muscle cells. J Neuroinflammation 2016; 13:185. [PMID: 27416931 PMCID: PMC4946206 DOI: 10.1186/s12974-016-0654-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 07/06/2016] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND Intracranial aneurysms (IA) are increasingly recognized as a disease driven by chronic inflammation. Recent research has identified key mediators and processes underlying IA pathogenesis, but mechanistic understanding remains incomplete. Lymphocytic infiltrates have been demonstrated in patient IA tissue specimens and have also been shown to play an important role in abdominal aortic aneurysms (AAA) and related diseases such as atherosclerosis. However, no study has systematically examined the contribution of lymphocytes in a model of IA. METHODS Lymphocyte-deficient (Rag1) and wild-type (WT; C57BL/6 strain) mice were subjected to a robust IA induction protocol. Rates of IA formation and rupture were measured, and cerebral artery tissue was collected and utilized for histology and gene expression analysis. RESULTS At 2 weeks, the Rag1 group had significantly fewer IA formations and ruptures than the WT group. Histological analysis of unruptured IA tissue showed robust B and T lymphocyte infiltration in the WT group, while there were no differences in macrophage infiltration, IA diameter, and wall thickness. Significant differences in interleukin-6 (IL-6), matrix metalloproteinases 2 (MMP2) and 9 (MMP9), and smooth muscle myosin heavy chain (MHC) were observed between the groups. CONCLUSIONS Lymphocytes are key contributors to IA pathogenesis and provide a novel target for the prevention of IA progression and rupture in patients.
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Affiliation(s)
- David M Sawyer
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Ste. 1300, 8047, New Orleans, LA, 70112, USA
| | - Lauren A Pace
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Ste. 1300, 8047, New Orleans, LA, 70112, USA
| | - Crissey L Pascale
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Ste. 1300, 8047, New Orleans, LA, 70112, USA
| | - Alexander C Kutchin
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Ste. 1300, 8047, New Orleans, LA, 70112, USA
| | - Brannan E O'Neill
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Ste. 1300, 8047, New Orleans, LA, 70112, USA
| | - Robert M Starke
- Department of Neurosurgery, University of Miami, Miami, FL, USA
| | - Aaron S Dumont
- Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, 131 S. Robertson St. Ste. 1300, 8047, New Orleans, LA, 70112, USA.
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29
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Sathyan S, Koshy LV, Srinivas L, Easwer HV, Premkumar S, Nair S, Bhattacharya RN, Alapatt JP, Banerjee M. Erratum to: Pathogenesis of intracranial aneurysm is mediated by proinflammatory cytokine TNFA and IFNG and through stochastic regulation of IL10 and TGFB1 by comorbid factors. J Neuroinflammation 2015; 12:164. [PMID: 26373652 PMCID: PMC4570642 DOI: 10.1186/s12974-015-0383-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 08/12/2015] [Indexed: 11/10/2022] Open
Affiliation(s)
- Sanish Sathyan
- Human Molecular Genetics Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, , Kerala, India.
| | - Linda V Koshy
- Human Molecular Genetics Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, , Kerala, India.
| | - Lekshmy Srinivas
- Human Molecular Genetics Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, , Kerala, India.
| | - H V Easwer
- Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, Kerala, India.
| | - S Premkumar
- Department of Neurosurgery, Calicut Medical College, Calicut, Kerala, India.
| | - Suresh Nair
- Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, Kerala, India.
| | - R N Bhattacharya
- Department of Neurosurgery, Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram, Kerala, India.
| | - Jacob P Alapatt
- Department of Neurosurgery, Calicut Medical College, Calicut, Kerala, India.
| | - Moinak Banerjee
- Human Molecular Genetics Laboratory, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, 695014, , Kerala, India.
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