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Hernandez I, Hayward JJ, Brockman JA, White ME, Mouttham L, Wilcox EA, Garrison S, Castelhano MG, Loftus JP, Gomes FE, Balkman C, Brooks MB, Fiani N, Forman M, Kern T, Kornreich B, Ledbetter EC, Peralta S, Struble AM, Caligiuri L, Corey E, Lin L, Jordan J, Sack D, Boyko AR, Lyons LA, Todhunter RJ. Complex Feline Disease Mapping Using a Dense Genotyping Array. Front Vet Sci 2022; 9:862414. [PMID: 35782544 PMCID: PMC9244801 DOI: 10.3389/fvets.2022.862414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/29/2022] [Indexed: 11/13/2022] Open
Abstract
The current feline genotyping array of 63 k single nucleotide polymorphisms has proven its utility for mapping within breeds, and its use has led to the identification of variants associated with Mendelian traits in purebred cats. However, compared to single gene disorders, association studies of complex diseases, especially with the inclusion of random bred cats with relatively low linkage disequilibrium, require a denser genotyping array and an increased sample size to provide statistically significant associations. Here, we undertook a multi-breed study of 1,122 cats, most of which were admitted and phenotyped for nine common complex feline diseases at the Cornell University Hospital for Animals. Using a proprietary 340 k single nucleotide polymorphism mapping array, we identified significant genome-wide associations with hyperthyroidism, diabetes mellitus, and eosinophilic keratoconjunctivitis. These results provide genomic locations for variant discovery and candidate gene screening for these important complex feline diseases, which are relevant not only to feline health, but also to the development of disease models for comparative studies.
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Affiliation(s)
- Isabel Hernandez
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Jessica J. Hayward
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
- *Correspondence: Jessica J. Hayward
| | - Jeff A. Brockman
- Pet Nutrition Center, Hill's Pet Nutrition, Topeka, KS, United States
| | - Michelle E. White
- Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, MA, United States
- Vertebrate Genomics Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Lara Mouttham
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Elizabeth A. Wilcox
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Susan Garrison
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Marta G. Castelhano
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - John P. Loftus
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Filipe Espinheira Gomes
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Cheryl Balkman
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Marjory B. Brooks
- Department of Population Medicine and Diagnostic Services, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Nadine Fiani
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Marnin Forman
- Cornell University Veterinary Specialists, Stamford, CT, United States
| | - Tom Kern
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Bruce Kornreich
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Eric C. Ledbetter
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Santiago Peralta
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Angela M. Struble
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Lisa Caligiuri
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Elizabeth Corey
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Lin Lin
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Julie Jordan
- Cornell Veterinary Biobank, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Danny Sack
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Adam R. Boyko
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
| | - Leslie A. Lyons
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO, United States
| | - Rory J. Todhunter
- Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY, United States
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Hostettler IC, O'Callaghan B, Bugiardini E, O'Connor E, Vandrovcova J, Davagnanam I, Alg V, Bonner S, Walsh D, Bulters D, Kitchen N, Brown MM, Grieve J, Werring DJ, Houlden H. ANGPTL6 Genetic Variants Are an Underlying Cause of Familial Intracranial Aneurysms. Neurology 2020; 96:e947-e955. [PMID: 33106390 PMCID: PMC8105901 DOI: 10.1212/wnl.0000000000011125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 10/08/2020] [Indexed: 01/16/2023] Open
Abstract
Purpose To understand the role of the angiopoietin-like 6 gene (ANGPTL6) in intracranial aneurysms (IAs), we investigated its role in a large cohort of familial IAs. Methods Individuals with family history of IA were recruited to the Genetic and Observational Subarachnoid Haemorrhage (GOSH) study. The ANGPTL6 gene was sequenced using Sanger sequencing. Identified genetic variants were compared to a control population. Results We found 6 rare ANGPTL6 genetic variants in 9/275 individuals with a family history of IA (3.3%) (5 missense mutations and 1 nonsense mutation leading to a premature stop codon), none present in controls. One of these had been previously reported: c.392A>T (p.Glu131Val) on exon 2; another was very close: c.332G>A (p.Arg111His). Two further genetic variants lie within the fibrinogen-like domain of the ANGPTL6 gene, which may influence function or level of the ANGPTL6 protein. The last 2 missense mutations lie within the coiled-coil domain of the ANGPTL6 protein. All genetic variants were well conserved across species. Conclusion ANGPTL6 genetic variants are an important cause of IA. Defective or lack of ANGPTL6 protein is therefore an important factor in blood vessel proliferation leading to IA; dysfunction of this protein is likely to cause abnormal proliferation or weakness of vessel walls. With these data, not only do we emphasize the importance of screening familial IA cases for ANGPTL6 and other genes involved in IA, but also highlight the ANGPTL6 pathway as a potential therapeutic target. Classification of Evidence This is a Class III study showing some specificity of presence of the ANGPTL6 gene variant as a marker of familial intracranial aneurysms in a small subset of individuals with familial aneurysms.
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Affiliation(s)
- Isabel C Hostettler
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Benjamin O'Callaghan
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Enrico Bugiardini
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Emer O'Connor
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Jana Vandrovcova
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Indran Davagnanam
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Varinder Alg
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Stephen Bonner
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Daniel Walsh
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Diederik Bulters
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Neil Kitchen
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Martin M Brown
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Joan Grieve
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - David J Werring
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust
| | - Henry Houlden
- From the Stroke Research Centre (I.C.H., V.A., M.M.B., D.J.W.), MRC Centre for Neuromuscular Diseases (B.O., E.B.), and Department of Neuromuscular Disorders (E.B., J.V.), UCL Queen Square Institute of Neurology; Neurogenetics Laboratory (I.C.H., B.O., E.O., H.H.) and Departments of Neuroradiology (I.D.) and Neurosurgery (N.K., J.G.), the National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, Queen Square, London; Department of Anaesthesia (S.B.), the James Cook University Hospital, Middlesbrough; Department of Neurosurgery (D.W.), King's College Hospital NHS Foundation Trust, London; and Department of Neurosurgery (D.B.), University Hospital Southampton NHS Foundation Trust.
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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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Meeuwsen JAL, van ´t Hof FNG, van Rheenen W, Rinkel GJE, Veldink JH, Ruigrok YM. Circulating microRNAs in patients with intracranial aneurysms. PLoS One 2017; 12:e0176558. [PMID: 28459827 PMCID: PMC5411042 DOI: 10.1371/journal.pone.0176558] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 04/12/2017] [Indexed: 12/31/2022] Open
Abstract
Introduction We compared circulating microRNA (miRNA) levels in plasma of patients with intracranial aneurysms (IA) to those of controls as a first step towards finding potential biomarkers for individuals at high risk of IA development and its subsequent rupture. Patients and methods Using a PCR array we measured 370 miRNAs in plasma of 15 patients with prior aneurysmal subarachnoid hemorrhage (aSAH), of whom 11 had an additional unruptured IA (UIA), and of 15 controls. MiRNAs with a difference in levels with an absolute fold change (FC) > 1.2 and p<0.01 were further tested using real-time (RT) PCR in an additional independent set of 15 aSAH patients, 15 untreated UIA patients and 15 controls for replication (absolute FC >1.2 and p<0.05). We used receiver operating characteristic (ROC) curves to illustrate the diagnostic potential of these miRNAs. Results Three of five miRNAs with a difference in levels in the PCR array study were replicated with miRNA-183-5p decreased in all patients (FC = -2.2, p = 1.7x10-3), miRNA-200a-3p increased in aSAH patients (FC = 1.8, p = 2.8x10-2) and miRNA-let7b-5p decreased in UIA patients (FC = -1.7, p = 1.27x10-3) as compared to controls. In distinguishing aSAH patients from controls, the area under the ROC curve (AUC) was 0.80 (95% confidence interval (95% CI) 0.63–0.97) for miRNA-183-5p, and 0.74 (95% CI 0.55–0.94) for miRNA-200a-3p. In distinguishing untreated UIA patients from controls, AUC was 0.83 (95% CI 0.69–0.98) for miRNA-183-5p and 0.92 (95% CI 0.81–1) for miRNA-let-7b. Discussion/Conclusions We identified three specific circulating miRNAs that are able to discriminate between IA patients and controls. Follow-up studies should assess if these miRNAs may be used biomarkers for identifying individuals at high risk of IA development and its subsequent rupture.
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Affiliation(s)
- John A. L. Meeuwsen
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
| | - Femke N. G. van ´t Hof
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
| | - Wouter van Rheenen
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
| | - Gabriel J. E. Rinkel
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
| | - Jan H. Veldink
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
| | - Ynte M. Ruigrok
- Department of Neurology and Neurosurgery, Brain Center Rudolf Magnus, University Medical Center Utrecht, The Netherlands
- * E-mail:
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Arning A, Jeibmann A, Köhnemann S, Brokinkel B, Ewelt C, Berger K, Wellmann J, Nowak-Göttl U, Stummer W, Stoll M, Holling M. ADAMTS genes and the risk of cerebral aneurysm. J Neurosurg 2016; 125:269-74. [PMID: 26745484 DOI: 10.3171/2015.7.jns154] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Cerebral aneurysms (CAs) affect 2%-5% of the population, and familial predisposition plays a significant role in CA pathogenesis. Several lines of evidence suggest that genetic variations in matrix metalloproteinase genes (MMP) are involved in the etiopathology of CAs. The authors performed a case-control study to investigate the effect of 4 MMP variants from the ADAMTS family on the pathogenesis of CAs. METHODS To identify susceptible genetic variants, the authors investigated 8 single nucleotide polymorphisms (SNPs) in 4 genes from the ADAMTS family (ADAMTS2, -7, -12, and -13) known to be associated with vascular diseases. The study included 353 patients with CAs and 1055 healthy adults. RESULTS The authors found significant associations between CA susceptibility and genetic variations in 3 members of the ADAMTS family. The largest risk for CA (OR 1.32, p = 0.006) was observed in carriers of the ADAMTS2 variant rs11750568, which has been previously associated with pediatric stroke. Three SNPs under investigation are associated with a protective effect in CA pathogenesis (ADAMTS12 variant rs1364044: OR 0.65, p = 0.0001; and ADAMTS13 variants rs739469 and rs4962153: OR 0.77 and 0.63, p = 0.02 and 0.0006, respectively), while 2 other ADAMTS13 variants may confer a significant risk (rs2301612: OR 1.26, p = 0.011; rs2285489: OR 1.24, p = 0.02). CONCLUSIONS These results suggest that reduced integrity of the endothelial wall, as conferred by ADAMTS variants, together with inflammatory processes and defective vascular remodeling plays an important role in CA pathogenesis, although the mechanism of action remains unknown. The authors' findings may lead to specific screening of at-risk populations in the future.
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Affiliation(s)
| | | | | | | | - Christian Ewelt
- Department of Neurosurgery, University Hospital Münster; and
| | - Klaus Berger
- Institute of Epidemiology and Social Medicine, University of Münster
| | - Jürgen Wellmann
- Institute of Epidemiology and Social Medicine, University of Münster
| | - Ulrike Nowak-Göttl
- Institute of Clinical Chemistry, Thrombosis and Hemostasis Treatment Center, Kiel, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Walter Stummer
- Department of Neurosurgery, University Hospital Münster; and
| | - Monika Stoll
- Institute of Human Genetics, Genetic Epidemiology
| | - Markus Holling
- Department of Neurosurgery, University Hospital Münster; and
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Abstract
Pituitary apoplexy, a rare clinical syndrome secondary to abrupt hemorrhage or infarction, complicates 2%-12% of pituitary adenomas, especially nonfunctioning tumors. Headache of sudden and severe onset is the main symptom, sometimes associated with visual disturbances or ocular palsy. Signs of meningeal irritation or altered consciousness may complicate the diagnosis. Precipitating factors (increase in intracranial pressure, arterial hypertension, major surgery, anticoagulant therapy or dynamic testing, etc) may be identified. Corticotropic deficiency with adrenal insufficiency may be life threatening if left untreated. Computed tomography or magnetic resonance imaging confirms the diagnosis by revealing a pituitary tumor with hemorrhagic and/or necrotic components. Formerly considered a neurosurgical emergency, pituitary apoplexy always used to be treated surgically. Nowadays, conservative management is increasingly used in selected patients (those without important visual acuity or field defects and with normal consciousness), because successive publications give converging evidence that a wait-and-see approach may also provide excellent outcomes in terms of oculomotor palsy, pituitary function and subsequent tumor growth. However, it must be kept in mind that studies comparing surgical approach and conservative management were retrospective and not controlled.
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Affiliation(s)
- Claire Briet
- Service d'Endocrinologie et des Maladies de la Reproduction and Centre de Référence des Maladies Endocriniennes Rares de la Croissance (C.B., S.S., P.C.), Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicêtre F94275, France; Service d'Endocrinologie (C.B.), Centre Hospitalier Universitaire d'Angers, Angers 49000, France; Service d'Endocrinologie (J.-F.B.), Centre Hospitalier Universitaire de Liège, Liège B4000, Belgium; Unité Mixte de Recherche S1185 (P.C.), Université Paris-Saclay, Université Paris-Sud; and Institut National de la Santé et de la Recherche Médicale Unité 1185, Faculté de Médecine Paris-Sud, Le Kremlin-Bicêtre F94276, France; and Neurosurgery, Harvard Medical School, Brigham and Women's Hospital (E.R.L.), Boston, Massachusetts 02115
| | - Sylvie Salenave
- Service d'Endocrinologie et des Maladies de la Reproduction and Centre de Référence des Maladies Endocriniennes Rares de la Croissance (C.B., S.S., P.C.), Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicêtre F94275, France; Service d'Endocrinologie (C.B.), Centre Hospitalier Universitaire d'Angers, Angers 49000, France; Service d'Endocrinologie (J.-F.B.), Centre Hospitalier Universitaire de Liège, Liège B4000, Belgium; Unité Mixte de Recherche S1185 (P.C.), Université Paris-Saclay, Université Paris-Sud; and Institut National de la Santé et de la Recherche Médicale Unité 1185, Faculté de Médecine Paris-Sud, Le Kremlin-Bicêtre F94276, France; and Neurosurgery, Harvard Medical School, Brigham and Women's Hospital (E.R.L.), Boston, Massachusetts 02115
| | - Jean-François Bonneville
- Service d'Endocrinologie et des Maladies de la Reproduction and Centre de Référence des Maladies Endocriniennes Rares de la Croissance (C.B., S.S., P.C.), Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicêtre F94275, France; Service d'Endocrinologie (C.B.), Centre Hospitalier Universitaire d'Angers, Angers 49000, France; Service d'Endocrinologie (J.-F.B.), Centre Hospitalier Universitaire de Liège, Liège B4000, Belgium; Unité Mixte de Recherche S1185 (P.C.), Université Paris-Saclay, Université Paris-Sud; and Institut National de la Santé et de la Recherche Médicale Unité 1185, Faculté de Médecine Paris-Sud, Le Kremlin-Bicêtre F94276, France; and Neurosurgery, Harvard Medical School, Brigham and Women's Hospital (E.R.L.), Boston, Massachusetts 02115
| | - Edward R Laws
- Service d'Endocrinologie et des Maladies de la Reproduction and Centre de Référence des Maladies Endocriniennes Rares de la Croissance (C.B., S.S., P.C.), Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicêtre F94275, France; Service d'Endocrinologie (C.B.), Centre Hospitalier Universitaire d'Angers, Angers 49000, France; Service d'Endocrinologie (J.-F.B.), Centre Hospitalier Universitaire de Liège, Liège B4000, Belgium; Unité Mixte de Recherche S1185 (P.C.), Université Paris-Saclay, Université Paris-Sud; and Institut National de la Santé et de la Recherche Médicale Unité 1185, Faculté de Médecine Paris-Sud, Le Kremlin-Bicêtre F94276, France; and Neurosurgery, Harvard Medical School, Brigham and Women's Hospital (E.R.L.), Boston, Massachusetts 02115
| | - Philippe Chanson
- Service d'Endocrinologie et des Maladies de la Reproduction and Centre de Référence des Maladies Endocriniennes Rares de la Croissance (C.B., S.S., P.C.), Hôpital de Bicêtre, Assistance Publique-Hôpitaux de Paris, Le Kremlin-Bicêtre F94275, France; Service d'Endocrinologie (C.B.), Centre Hospitalier Universitaire d'Angers, Angers 49000, France; Service d'Endocrinologie (J.-F.B.), Centre Hospitalier Universitaire de Liège, Liège B4000, Belgium; Unité Mixte de Recherche S1185 (P.C.), Université Paris-Saclay, Université Paris-Sud; and Institut National de la Santé et de la Recherche Médicale Unité 1185, Faculté de Médecine Paris-Sud, Le Kremlin-Bicêtre F94276, France; and Neurosurgery, Harvard Medical School, Brigham and Women's Hospital (E.R.L.), Boston, Massachusetts 02115
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8
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Kwong Y, Cartmill M, Jaspan T, Suri M. Fetal MRI demonstrating vein of Galen malformations in two successive pregnancies--a previously unreported occurrence. Childs Nerv Syst 2015; 31:1033-5. [PMID: 25985841 DOI: 10.1007/s00381-015-2750-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 05/13/2015] [Indexed: 12/22/2022]
Abstract
PURPOSE Vein of Galen malformations are rare and are usually detected in utero using ultrasonography. No definite genetic predisposition has been described in the literature. We present a case with two successive pregnancies complicated by vein of Galen malformations, which were assessed using fetal MRI. The putative role of genetic mutations is also discussed. METHODS A 30-year-old primigravida presented in the third trimester with a fetus diagnosed with vein of Galen malformation on sonography. MRI and MR angiography were performed for further assessment. The subsequent pregnancy was again complicated by vein of Galen malformation. In addition to MRI, genetic analysis was carried out on both fetuses and on the parents. RESULTS MR angiography revealed that both fetuses suffered from the choroidal sub-type of vein of Galen malformation, with multiple arterial feeders fistulating onto a midline venous pouch. The visualised anatomy obtained was far superior than on sonography and allowed categorisation of vein of Galen malformation sub-type. Genetic analysis on the mother and both fetuses showed variant RASA1 gene mutation. CONCLUSIONS This case demonstrates that fetal MRI is a powerful tool in the investigation of in utero neurovascular malformations. A genetic mutation was identified, but this was of uncertain significance.
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Affiliation(s)
- Yune Kwong
- Regional Imaging, 3 Ramsay Place, West Albury, NSW, 2640, Australia,
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9
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Thompson BG, Brown RD, Amin-Hanjani S, Broderick JP, Cockroft KM, Connolly ES, Duckwiler GR, Harris CC, Howard VJ, Johnston SCC, Meyers PM, Molyneux A, Ogilvy CS, Ringer AJ, Torner J. Guidelines for the Management of Patients With Unruptured Intracranial Aneurysms: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association. Stroke 2015; 46:2368-400. [PMID: 26089327 DOI: 10.1161/str.0000000000000070] [Citation(s) in RCA: 599] [Impact Index Per Article: 66.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE The aim of this updated statement is to provide comprehensive and evidence-based recommendations for management of patients with unruptured intracranial aneurysms. METHODS Writing group members used systematic literature reviews from January 1977 up to June 2014. They also reviewed contemporary published evidence-based guidelines, personal files, and published expert opinion to summarize existing evidence, indicate gaps in current knowledge, and when appropriate, formulated recommendations using standard American Heart Association criteria. The guideline underwent extensive peer review, including review by the Stroke Council Leadership and Stroke Scientific Statement Oversight Committees, before consideration and approval by the American Heart Association Science Advisory and Coordinating Committee. RESULTS Evidence-based guidelines are presented for the care of patients presenting with unruptured intracranial aneurysms. The guidelines address presentation, natural history, epidemiology, risk factors, screening, diagnosis, imaging and outcomes from surgical and endovascular treatment.
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10
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Yan J, Hitomi T, Takenaka K, Kato M, Kobayashi H, Okuda H, Harada KH, Koizumi A. Genetic study of intracranial aneurysms. Stroke 2015; 46:620-6. [PMID: 25649796 DOI: 10.1161/strokeaha.114.007286] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND AND PURPOSE Rupture of intracranial aneurysms (IAs) causes subarachnoid hemorrhage, leading to immediate death or severe disability. Identification of the genetic factors involved is critical for disease prevention and treatment. We aimed to identify the susceptibility genes for IAs. METHODS Exome sequencing was performed in 12 families with histories of multiple cases of IA (number of cases per family ≥3), with a total of 42 cases. Various filtering strategies were used to select the candidate variants. Replicate association studies of several candidate variants were performed in probands of 24 additional IA families and 426 sporadic IA cases. Functional analysis for the mutations was conducted. RESULTS After sequencing and filtering, 78 variants were selected for the following reasons: allele frequencies of variants in 42 patients was significantly (P<0.05) larger than expected; variants were completely shared by all patients with IA within ≥1 family; variants predicted damage to the structure or function of the protein by PolyPhen-2 (Polymorphism Phenotyping V2) and SIFT (Sorting Intolerance From Tolerant). We selected 10 variants from 9 genes (GPR63, ADAMST15, MLL2, IL10RA, PAFAH2, THBD, IL11RA, FILIP1L, and ZNF222) to form 78 candidate variants by considering commonness in families, known disease genes, or ontology association with angiogenesis. Replicate association studies revealed that only p.E133Q in ADAMTS15 was aggregated in the familial IA cases (odds ratio, 5.96; 95% confidence interval, 2.40-14.82; P=0.0001; significant after the Bonferroni correction [P=0.05/78=0.0006]). Silencing ADAMTS15 and overexpression of ADAMTS15 p.E133Q accelerated endothelial cell migration, suggesting that ADAMTS15 may have antiangiogenic activity. CONCLUSIONS ADAMTS15 is a candidate gene for IAs.
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Affiliation(s)
- Junxia Yan
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Toshiaki Hitomi
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Katsunobu Takenaka
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Masayasu Kato
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Hatasu Kobayashi
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Hiroko Okuda
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Kouji H Harada
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.)
| | - Akio Koizumi
- From the Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Hunan, China (J.Y.); Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan (J.Y., H.K., H.O., T.H., K.H.H, A.K.); and Department of Neurosurgery, Takayama Red Cross Hospital, Takayama, Japan (K.T., M.K.).
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11
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Abstract
Stroke represents a clinical syndrome rather than a single disease. A number of stroke subtypes can be distinguished based on careful phenotyping, with each of these having distinct and overlapping risk factor profiles. Recent evidence has suggested that genetics plays an important part in stroke risk, with at least 2 genes specific to stroke risk directly now having been identified. This review will explore our current understanding of the genetics underlying stroke risk and whether this information is currently useful in a clinical setting for patient benefit.
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Affiliation(s)
- Steve Bevan
- Stroke and Dementia Research Centre, St George's, University of London, Cranmer Terrace, Tooting, London, SW17 0RE, UK.
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12
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Klingler JH, Krüger MT, Lemke JR, Jilg C, Van Velthoven V, Zentner J, Neumann HPH, Gläsker S. Sequence variations in the von Hippel-Lindau tumor suppressor gene in patients with intracranial aneurysms. J Stroke Cerebrovasc Dis 2013; 22:437-43. [PMID: 23434161 DOI: 10.1016/j.jstrokecerebrovasdis.2013.01.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/23/2013] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND The rupture of intracranial aneurysms leads to subarachnoid hemorrhage, which is often associated with poor outcome. Preventive treatment of unruptured intracranial aneurysms is possible and recommended. However, the lack of candidate genes precludes identifying patients at risk by genetic analyses. We observed intracranial aneurysms in 2 patients with von Hippel-Lindau (VHL) disease and the known disease-causing mutation c.292T > C (p.Tyr98His) in the VHL tumor suppressor gene. This study investigates whether the VHL gene is a possible candidate gene for aneurysm formation. METHODS Patients with intracranial aneurysms admitted to our department between 2006 and 2009 were enrolled. The peripheral leukocyte DNA of 200 patients was investigated for sequence variations in the VHL gene using denaturing high performance liquid chromatography. Peripheral leukocyte DNA of 100 randomly sampled probands was investigated as a control group. The allelic frequencies of sequence variations between both groups were compared using the Fisher exact test. RESULTS Fourteen of 200 patients with intracranial aneurysms had sequence variations at 6 different loci in the VHL gene. In contrast, no sequence variations were identified in 100 probands in the control group (P = 0.0062). However, none of the single-sequence variations had a statistically significant difference in the allelic frequencies compared to the control group. CONCLUSIONS There is accumulating evidence for a genetic basis of aneurysm development. Our investigations lead to the conclusion that the VHL gene is potentially involved in the formation of intracranial aneurysms in a subset of patients. Additional candidate genes need to be identified in order to develop sensitive genetic screening for at-risk patients.
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Affiliation(s)
- Jan-Helge Klingler
- Department of Neurosurgery, Freiburg University Medical Center, Freiburg, Germany
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13
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Kim CJ, Park SS, Lee HS, Chung HJ, Choi W, Chung JH, Kim JM, Hong ST. Identification of an autosomal dominant locus for intracranial aneurysm through a model-based family collection in a geographically limited area. J Hum Genet 2011; 56:464-6. [DOI: 10.1038/jhg.2011.27] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Shoja MM, Agutter PS, Tubbs RS, Payner TD, Ghabili K, Cohen-Gadol AA. The role of the renin—angiotensin system in the pathogenesis of intracranial aneurysms. J Renin Angiotensin Aldosterone Syst 2011; 12:262-73. [DOI: 10.1177/1470320310387845] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Introduction: Recent work has begun to elucidate the pathogenesis of intracranial aneurysms (IA) and has shown that many genes are involved in the risk for this condition. There has also been increasing research interest in the renin—angiotensin system (RAS) in the brain and its involvement in a range of cardiovascular and neurological disorders. The possibility that the RAS is implicated in the pathogenesis of IA merits further investigation. The aim of this article is to review the literature on the pathogenesis of IA and the pathophysiological significance of the brain RAS, and to identify directions for research into their association. Methods and results : A survey of the literature in these fields shows that although factors contributing to systemic hypertension predispose to IA, a large number of genes involved in endothelial cell adhesion, smooth muscle activity, extracellular matrix dynamics and the inflammatory and immune responses are also implicated. The brain RAS has a significant role in regulating blood pressure and in maintaining cerebrovascular autoregulation, but angiotensin II receptors are also involved in the maintenance of endothelial cell and vascular smooth muscle function and in the inflammatory response in the brain. Conclusions: There is strong, albeit largely circumstantial, evidence in the literature for a relationship between the brain RAS and the formation of IA. Research on the association between polymorphisms in RAS-related genes and the incidence of unruptured and ruptured IA is indicated.
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Affiliation(s)
- Mohammadali M Shoja
- Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Paul S Agutter
- Theoretical Medicine and Biology Group, Glossop, Derbyshire, UK
| | - R Shane Tubbs
- Section of Pediatric Neurosurgery, Children's Hospital, Birmingham, Alabama, USA
| | - Troy D Payner
- Clarian Neuroscience Institute, Indianapolis Neurosurgical Group and Indiana University Department of Neurosurgery, Indianapolis, USA
| | - Kamyar Ghabili
- Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aaron A Cohen-Gadol
- Clarian Neuroscience Institute, Indianapolis Neurosurgical Group and Indiana University Department of Neurosurgery, Indianapolis, USA,
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15
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Impact of LIMK1, MMP2 and TNF-α variations for intracranial aneurysm in Japanese population. J Hum Genet 2011; 56:211-6. [PMID: 21228795 DOI: 10.1038/jhg.2010.169] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Genetic factors are known to have an important role in intracranial aneurysm (IA) pathogenesis. The purpose of this study is to identify single-nucleotide polymorphisms (SNPs) that are associated with IA in Japanese population. A total of 2050 IA patients and 1835 controls recruited in Biobank Japan, The University of Tokyo were used in this study. In all, 45 SNPs in 24 genes encoding proteins, which have been considered to be possible risk factors to IA pathogenesis, were genotyped using multiplex PCR-invader assay. Association analysis was evaluated by logistic regression analysis before and after adjustment of age, smoking and hypertension status. This case-control association study revealed a SNP, rs6460071 located on LIMK1 gene (P = 0.00069) to be significantly associated with increased risk of IA. In addition, two SNPs, rs243847 (P = 0.00086) and rs243865 (P = 0.00090), on matrix metallopeptidase 2 (MMP2) gene and one SNP rs1799724 (P = 0.0026) on tumor necrosis factor-α (TNF-α) gene, are marginally associated with IA in male- and female-specific manner, respectively. In conclusion, a large-scale case-control association study was conducted to verify genetic variations associated with IA in Japanese population. This study gave insights on the importance of stratified analysis between genders, and suggested that the underlying mechanism of IA pathogenesis might differ between females and males.
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16
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Zacharia BE, Hickman ZL, Grobelny BT, DeRosa P, Kotchetkov I, Ducruet AF, Connolly ES. Epidemiology of aneurysmal subarachnoid hemorrhage. Neurosurg Clin N Am 2010; 21:221-33. [PMID: 20380965 DOI: 10.1016/j.nec.2009.10.002] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Aneurysmal subarachnoid hemorrhage (aSAH) is a form of hemorrhagic stroke that affects up to 30,000 individuals per year in the United States. The incidence of aSAH has been shown to be associated with numerous nonmodifiable (age, gender, ethnicity, family history, aneurysm location, size) and modifiable (hypertension, body mass index, tobacco and illicit drug use) risk factors. Although early repair of ruptured aneurysms and aggressive postoperative management has improved overall outcomes, it remains a devastating disease, with mortality approaching 50% and less than 60% of survivors returning to functional independence. As treatment modalities change and the percentage of minority and elderly populations increase, it is critical to maintain an up-to-date understanding of the epidemiology of SAH.
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Affiliation(s)
- Brad E Zacharia
- Department of Neurological Surgery, Columbia University Medical Center, 630 West 168th Street, P&S Building 5-454, New York, NY 10032, USA
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17
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Nguyen TV, Chandrashekar K, Qin Z, Parent AD, Zhang J. Epidemiology of intracranial aneurysms of Mississippi: a 10-year (1997-2007) retrospective study. J Stroke Cerebrovasc Dis 2009; 18:374-80. [PMID: 19717022 DOI: 10.1016/j.jstrokecerebrovasdis.2008.12.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Revised: 11/25/2008] [Accepted: 12/16/2008] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Despite massive efforts, progress so far has been modest in isolating the genetic determinants for intracranial aneurysm (IA). More detailed epidemiology data might be essential for successful genome-wide association study. Here, we aimed to investigate epidemiology and identify the key risk factors associated with the pathogenesis of IA in a large specific population. METHODS We investigated the epidemiology and analyzed the risk factors of IA pathogenesis by using an International Classification of Diseases, Ninth Revision database search of the patients treated at the University of Mississippi Medical Center, Jackson, MS, within the past 10-year period (1998-2007). All recruited patients were interviewed to assess multiple risk factors and comorbidities (hypertension, tobacco abuse, females sex, diabetes mellitus, coronary artery disease, coronary obstructive pulmonary disease, alcohol abuse, stroke, hyperlipidemia, illicit drug use, and family history). RESULT In this retrospective study, we identified several significant risk factors among well-defined human subjects. The 3 major risk factors identified for our IA population are hypertension, tobacco abuse, and female sex. However, African American race was not a significant risk factor in our study. Furthermore, top two risk factors (hypertension, tobacco abuse) were found to be highly associated with familial cases. CONCLUSIONS In this study, using a specific and well-defined large population, we reported that some key risk factors were further confirmed to be strongly associated with the pathogenesis of IA whereas further investigation into racial factors is apparently needed. Our finding of the confounding effects of top risks with familial cases further complicated the genetic analysis of IA.
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Affiliation(s)
- Tuan V Nguyen
- Department of Neurosurgery, University of Mississippi Medical Center, Jackson, Mississippi 39216-4505, USA
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