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Faber JE, Zhang H, Xenakis JG, Bell TA, Hock P, Pardo-Manuel de Villena F, Ferris MT, Rzechorzek W. Large differences in collateral blood vessel abundance among individuals arise from multiple genetic variants. J Cereb Blood Flow Metab 2023; 43:1983-2004. [PMID: 37572089 PMCID: PMC10676139 DOI: 10.1177/0271678x231194956] [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: 05/02/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/14/2023]
Abstract
Collateral blood flow varies greatly among humans for reasons that remain unclear, resulting in significant differences in ischemic tissue damage. A similarly large variation has also been found in mice that is caused by genetic background-dependent differences in the extent of collateral formation, termed collaterogenesis-a unique angiogenic process that occurs during development and determines collateral number and diameter in the adult. Previous studies have identified several quantitative trait loci (QTL) linked to this variation. However, understanding has been hampered by the use of closely related inbred strains that do not model the wide genetic variation present in the "outbred" human population. The Collaborative Cross (CC) multiparent mouse genetic reference panel was developed to address this limitation. Herein we measured the number and average diameter of cerebral collaterals in 60 CC strains, their 8 founder strains, 8 F1 crosses of CC strains selected for abundant versus sparse collaterals, and 2 intercross populations created from the latter. Collateral number evidenced 47-fold variation among the 60 CC strains, with 14% having poor, 25% poor-to-intermediate, 47% intermediate-to-good, and 13% good collateral abundance, that was associated with large differences in post-stroke infarct volume. Collateral number in skeletal muscle and intestine of selected high- and low-collateral strains evidenced the same relative abundance as in brain. Genome-wide mapping demonstrated that collateral abundance is a highly polymorphic trait. Subsequent analysis identified: 6 novel QTL circumscribing 28 high-priority candidate genes harboring putative loss-of-function polymorphisms (SNPs) associated with low collateral number; 335 predicted-deleterious SNPs present in their human orthologs; and 32 genes associated with vascular development but lacking protein coding variants. Six additional suggestive QTL (LOD > 4.5) were also identified in CC-wide QTL mapping. This study provides a comprehensive set of candidate genes for future investigations aimed at identifying signaling proteins within the collaterogenesis pathway whose variants potentially underlie genetic-dependent collateral insufficiency in brain and other tissues.
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Affiliation(s)
- James E Faber
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, NC, USA
- Curriculum in Neuroscience, University of North Carolina, Chapel Hill, NC, USA
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA
| | - Hua Zhang
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, NC, USA
| | - James G Xenakis
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
| | - Timothy A Bell
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
| | - Pablo Hock
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
| | - Fernando Pardo-Manuel de Villena
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
- Carolina Institute for Developmental Disabilities, University of North Carolina, Chapel Hill, NC, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC, USA
| | - Martin T Ferris
- Department of Genetics, University of North Carolina, Chapel Hill, NC, USA
| | - Wojciech Rzechorzek
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, NC, USA
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Faber JE, Zhang H, Xenakis JG, Bell TA, Hock P, de Villena FPM, Ferris MT, Rzechorzek W. Large differences in collateral blood vessel abundance among individuals arise from multiple genetic variants. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.28.542633. [PMID: 37398475 PMCID: PMC10312463 DOI: 10.1101/2023.05.28.542633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Collateral blood flow varies greatly among humans for reasons that remain unclear, resulting in significant differences in ischemic tissue damage. A similarly large variation has also been found in mice that is caused by genetic background-dependent differences in the extent of collateral formation, termed collaterogenesis-a unique angiogenic process that occurs during development and determines collateral number and diameter in the adult. Previous studies have identified several quantitative trait loci (QTL) linked to this variation. However, understanding has been hampered by the use of closely related inbred strains that do not model the wide genetic variation present in the "outbred" human population. The Collaborative Cross (CC) multiparent mouse genetic reference panel was developed to address this limitation. Herein we measured the number and average diameter of cerebral collaterals in 60 CC strains, their 8 founder strains, 8 F1 crosses of CC strains selected for abundant versus sparse collaterals, and 2 intercross populations created from the latter. Collateral number evidenced 47-fold variation among the 60 CC strains, with 14% having poor, 25% poor-to-intermediate, 47% intermediate-to-good, and 13% good collateral abundance, that was associated with large differences in post-stroke infarct volume. Genome-wide mapping demonstrated that collateral abundance is a highly polymorphic trait. Subsequent analysis identified: 6 novel QTL circumscribing 28 high-priority candidate genes harboring putative loss-of-function polymorphisms (SNPs) associated with low collateral number; 335 predicted-deleterious SNPs present in their human orthologs; and 32 genes associated with vascular development but lacking protein coding variants. This study provides a comprehensive set of candidate genes for future investigations aimed at identifying signaling proteins within the collaterogenesis pathway whose variants potentially underlie genetic-dependent collateral insufficiency in brain and other tissues.
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Zeng K, Zhou X, Liu W, Nie C, Zhang Y. Determination of endogenous sphingolipid content in stroke rats and HT22 cells subjected to oxygen-glucose deprivation by LC‒MS/MS. Lipids Health Dis 2023; 22:13. [PMID: 36698123 PMCID: PMC9878918 DOI: 10.1186/s12944-022-01762-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/20/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Stroke is the leading cause of death in humans worldwide, and its incidence increases every year. It is well documented that lipids are closely related to stroke. Analyzing the changes in lipid content in the stroke model after absolute quantification and investigating whether changes in lipid content can predict stroke severity provides a basis for the combination of clinical stroke and quantitative lipid indicators. METHODS This paper establishes a rapid, sensitive, and reliable LC‒MS/MS analytical method for the detection of endogenous sphingolipids in rat serum and brain tissue and HT22 cells and quantifies the changes in sphingolipid content in the serum and brain tissue of rats from the normal and pMCAO groups and in cells from the normal and OGD/R groups. Using sphingosine (d17:1) as the internal standard, a chloroform: methanol (9:1) mixed system was used for protein precipitation and lipid extraction, followed by analysis by reversed-phase liquid chromatography coupled to triple quadrupole mass spectrometry. RESULTS Based on absolute quantitative analysis of lipids in multiple biological samples, our results show that compared with those in the normal group, the contents of sphinganine (d16:0), sphinganine (d18:0), and phytosphingosine were significantly increased in the model group, except sphingosine-1-phosphate, which was decreased in various biological samples. The levels of each sphingolipid component in serum fluctuate with time. CONCLUSION This isotope-free and derivatization-free LC‒MS/MS method can achieve absolute quantification of sphingolipids in biological samples, which may also help identify lipid biomarkers of cerebral ischemia.
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Affiliation(s)
- Keqi Zeng
- grid.411866.c0000 0000 8848 7685Department of Pharmaceutics, College of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangdong 51006 Guangzhou, China
| | - Xin Zhou
- grid.411866.c0000 0000 8848 7685Department of Pharmaceutics, College of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangdong 51006 Guangzhou, China
| | - Wanyi Liu
- grid.411866.c0000 0000 8848 7685Department of Pharmaceutics, College of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangdong 51006 Guangzhou, China
| | - Cong Nie
- grid.411866.c0000 0000 8848 7685Department of Pharmaceutics, College of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangdong 51006 Guangzhou, China
| | - Yingfeng Zhang
- grid.411866.c0000 0000 8848 7685Department of Pharmaceutics, College of Chinese Materia Medica, Guangzhou University of Chinese Medicine, Guangdong 51006 Guangzhou, China
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Tao S, Xiao X, Li X, Na F, Na G, Wang S, Zhang P, Hao F, Zhao P, Guo D, Liu X, Yang D. Targeted metabolomics reveals serum changes of amino acids in mild to moderate ischemic stroke and stroke mimics. Front Neurol 2023; 14:1153193. [PMID: 37122289 PMCID: PMC10140586 DOI: 10.3389/fneur.2023.1153193] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/28/2023] [Indexed: 05/02/2023] Open
Abstract
Background The pathophysiological processes linked to an acute ischemic stroke (IS) can be reflected in the circulating metabolome. Amino acids (AAs) have been demonstrated to be one of the most significant metabolites that can undergo significant alteration after a stroke. Methods We sought to identify the potential biomarkers for the early detection of IS using an extensive targeted technique for reliable quantification of 27 different AAs based on ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). A cohort with 216 participants was enrolled, including 70 mild to moderate ischemic stroke patients (National Institutes of Health Stroke Scale < 15, MB group), 76 stroke mimics (MM group) and 70 healthy controls (NC group). Results It was found that upon comparing MB and MM to control patients, AAs shifts were detected via partial least squares discrimination analysis (PLS-DA) and pathway analysis. Interestingly, MB and MM exhibited similar AAs pattern. Moreover, ornithine, asparagine, valine, citrulline, and cysteine were identified for inclusion in a biomarker panel for early-stage stroke detection based upon an AUC of 0.968 (95% CI 0.924-0.998). Levels of ornithine were positively associated with infract volume, 3 months mRS score, and National Institutes of Health Stroke Scale (NIHSS) score in MB. In addition, a metabolites biomarker panel, including ornithine, taurine, phenylalanine, citrulline, cysteine, yielded an AUC of 0.99 (95% CI 0.966-1) which can be employed to effectively discriminate MM patients from control. Conclusion Overall, alternations in serum AAs are characteristic metabolic features of MB and MM. AAs could serve as promising biomarkers for the early diagnosis of MB patients since mild to moderate IS patients were enrolled in the study. The metabolism of AAs can be considered as a key indicator for both the prevention and treatment of IS.
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Affiliation(s)
- Shuxin Tao
- Department of Neurology, Liaocheng People’s Hospital, Liaocheng, Shandong, China
| | - Xinxing Xiao
- Department of Neurology, Liaocheng People’s Hospital, Liaocheng, Shandong, China
| | - Xin Li
- Department of Clinical Laboratory, Zibo Central Hospital, Zibo, Shandong, China
| | - Fan Na
- Zhong Yuan Academy of Biological Medicine, Liaocheng People’s Hospital, Liaocheng, China
| | - Guo Na
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Shuang Wang
- Zhong Yuan Academy of Biological Medicine, Liaocheng People’s Hospital, Liaocheng, China
| | - Pin Zhang
- Experimental Research Center, China Academy of Chinese Medical Sciences, Beijing, China
| | - Fang Hao
- Department of Neurology, Liaocheng People’s Hospital, Liaocheng, Shandong, China
| | - Peiran Zhao
- Zhong Yuan Academy of Biological Medicine, Liaocheng People’s Hospital, Liaocheng, China
| | - Dong Guo
- Department of Neurology, Liaocheng People’s Hospital, Liaocheng, Shandong, China
| | - Xuewu Liu
- Department of Neurology, Qilu Hospital of Shandong University, Institute of Epilepsy, Shandong University, Jinan, Shandong, China
- Xuewu Liu,
| | - Dawei Yang
- Zhong Yuan Academy of Biological Medicine, Liaocheng People’s Hospital, Liaocheng, China
- *Correspondence: Dawei Yang,
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Lu M, Liu Y, Xian Z, Yu X, Chen J, Tan S, Zhang P, Guo Y. VEGF to CITED2 ratio predicts the collateral circulation of acute ischemic stroke. Front Neurol 2022; 13:1000992. [PMID: 36247751 PMCID: PMC9563238 DOI: 10.3389/fneur.2022.1000992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/24/2022] [Indexed: 11/30/2022] Open
Abstract
Objective The research objective was to evaluate the predicting role of the vascular endothelial growth factor to CBP/P300-interacting transactivator with Glu/Asp-rich C-terminal domain 2 Ratio (VEGF/CITED2) from peripheral blood mononuclear cells (PBMCs) in the collateral circulation of acute ischemic stroke (AIS). Methods In an observational study of patients with AIS, the western blot was applied to test the protein expression of VEGF and CITED2. Then, we calculated the VEGF/CITED2 and collected other clinical data. Binary logistic regression analysis between collateral circulation and clinical data was performed. Finally, receiver operating characteristic (ROC) curve analysis was used to explore the predictive value of VEGF/CITED2. Results A total of 67 patients with AIS were included in the study. Binary logistic regression analysis indicated the VEGF/CITED2 (OR 165.79, 95%CI 7.25–3,791.54, P = 0.001) was an independent protective factor. The ROC analyses showed an area under the ROC curve of the VEGF/CITED2 was 0.861 (95%CI 0.761–0.961). The optimal cutoff value of 1.013 for VEGF/CITED2 had a sensitivity of 89.1% and a specificity of 85.7%. Conclusion In patients with AIS, the VEGF/CITED2 was related to the establishment of collateral circulation. The VEGF/CITED2 is a potentially valuable biomarker for predicting collateral circulation. Clinical trial registration ClinicalTrials.gov, identifier: NCT05345366.
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Affiliation(s)
- Minyi Lu
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Yuben Liu
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Zhiqiang Xian
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaoyao Yu
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Jian Chen
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Sheng Tan
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Peidong Zhang
- Department of Cardiology, Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Peidong Zhang
| | - Yang Guo
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Yang Guo
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Kaloss AM, Theus MH. Leptomeningeal anastomoses: Mechanisms of pial collateral remodeling in ischemic stroke. WIREs Mech Dis 2022; 14:e1553. [PMID: 35118835 PMCID: PMC9283306 DOI: 10.1002/wsbm.1553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/09/2022] [Accepted: 01/11/2022] [Indexed: 12/13/2022]
Abstract
Arterial collateralization, as determined by leptomeningeal anastomoses or pial collateral vessels, is a well‐established vital player in cerebral blood flow restoration and neurological recovery from ischemic stroke. A secondary network of cerebral collateral circulation apart from the Circle of Willis, exist as remnants of arteriole development that connect the distal arteries in the pia mater. Recent interest lies in understanding the cellular and molecular adaptations that control the growth and remodeling, or arteriogenesis, of these pre‐existing collateral vessels. New findings from both animal models and human studies of ischemic stroke suggest a multi‐factorial and complex, temporospatial interplay of endothelium, immune and vessel‐associated cell interactions may work in concert to facilitate or thwart arteriogenesis. These valuable reports may provide critical insight into potential predictors of the pial collateral response in patients with large vessel occlusion and may aid in therapeutics to enhance collateral function and improve recovery from stroke. This article is categorized under:Neurological Diseases > Molecular and Cellular Physiology
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Affiliation(s)
- Alexandra M Kaloss
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, USA
| | - Michelle H Theus
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, USA.,School of Neuroscience, Virginia Tech, Blacksburg, Virginia, USA.,Center for Regenerative Medicine, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia, USA
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Bonnin P, Kubis N, Charriaut-Marlangue C. Collateral Supply in Preclinical Cerebral Stroke Models. Transl Stroke Res 2021; 13:512-527. [PMID: 34797519 PMCID: PMC9232412 DOI: 10.1007/s12975-021-00969-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 02/01/2023]
Abstract
Enhancing the collateral blood supply during the acute phase of cerebral ischemia may limit both the extension of the core infarct, by rescuing the penumbra area, and the degree of disability. Many imaging techniques have been applied to rodents in preclinical studies, to evaluate the magnitude of collateral blood flow and the time course of responses during the early phase of ischemic stroke. The collateral supply follows several different routes at the base of the brain (the circle of Willis) and its surface (leptomeningeal or pial arteries), corresponding to the proximal and distal collateral pathways, respectively. In this review, we describe and illustrate the cerebral collateral systems and their modifications following pre-Willis or post-Willis occlusion in rodents. We also review the potential pharmaceutical agents for stimulating the collateral blood supply tested to date. The time taken to establish a collateral blood flow supply through the leptomeningeal anastomoses differs between young and adult animals and between different species and genetic backgrounds. Caution is required when transposing preclinical findings to humans, and clinical trials must be performed to check the added value of pharmacological agents for stimulating the collateral blood supply at appropriate time points. However, collateral recruitment appears to be a rapid, beneficial, endogenous mechanism that can be stimulated shortly after artery occlusion. It should be considered a treatment target for use in addition to recanalization strategies.
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Affiliation(s)
- Philippe Bonnin
- APHP, Physiologie Clinique - Explorations Fonctionnelles, Hôpital Lariboisiere, Université de Paris, 2 rue Ambroise Paré, F-75010, Paris, France. .,INSERM U1148, LVTS, Hôpital Bichat, Université de Paris, F-75018, Paris, France.
| | - Nathalie Kubis
- APHP, Physiologie Clinique - Explorations Fonctionnelles, Hôpital Lariboisiere, Université de Paris, 2 rue Ambroise Paré, F-75010, Paris, France.,INSERM U1148, LVTS, Hôpital Bichat, Université de Paris, F-75018, Paris, France
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