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Funabashi S, Kataoka Y, Hori M, Ogura M, Doi T, Morita Y, Kiyoshige E, Nishimura K, Noguchi T, Harada-Shiba M. Asymptomatic Intracranial Artery Stenosis/Occlusion in Heterozygous Familial Hypercholesterolemia: Its Frequency and Implications for Cerebrovascular and Cardiovascular Events. J Am Heart Assoc 2024; 13:e033972. [PMID: 39011964 DOI: 10.1161/jaha.123.033972] [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: 02/10/2024] [Accepted: 05/23/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND The atherogenic characteristics of heterozygous familial hypercholesterolemia (HeFH) increase the risk of premature atherosclerotic cardiovascular disease including not only coronary artery disease but ischemic stroke. Asymptomatic intracranial artery stenosis/occlusion (IASO) is a major cause of ischemic stroke, but it has not yet been fully characterized in patients with HeFH. METHODS AND RESULTS This study analyzed 147 clinically diagnosed subjects with HeFH who underwent magnetic resonance imaging/magnetic resonance angiography imaging for evaluation of IASO (≥50% diameter stenosis). Major adverse cerebrovascular and cardiovascular events (cardiac death, ischemic stroke, and acute coronary syndrome) were compared in patients with HeFH with and without asymptomatic IASO. Asymptomatic IASO was observed in 13.6% of patients with HeFH. The untreated low-density lipoprotein cholesterol level (240±95 versus 244±75 mg/dL; P=0.67) did not differ between the 2 groups. Despite the use of lipid-lowering therapies (statin, P=0.71; high-intensity statin, P=0.81; ezetimibe, P=0.33; proprotein convertase subxilisin/kexin type 9 inhibitor, P=0.39; low-density lipoprotein apheresis, P=0.14), on-treatment low-density lipoprotein cholesterol level in patients with both HeFH and IASO was still suboptimally controlled (97±62 versus 105±50 mg/dL; P=0.17), accompanied by a higher triglyceride level (median, 109 versus 79 mg/dL; P=0.001). During the 12.4-year observational period (interquartile range, 6.2-24.6 years), asymptomatic IASO exhibited a 4.04-fold greater likelihood of experiencing a major adverse cardiovascular event (95% CI, 1.71-9.55; P=0.001) in patients with HeFH. This increased risk of a major adverse cardiovascular event was consistently observed in a multivariate Cox proportional hazards model adjusting clinical characteristics (hazard ratio, 4.32 [95% CI, 1.71-10.9]; P=0.002). CONCLUSIONS A total of 13.6% of Japanese subjects with HeFH presented with asymptomatic IASO. Despite lipid-lowering therapies, patients with both HeFH and IASO more likely had elevated risk of cerebrovascular and cardiovascular events. Our findings highlight asymptomatic IASO as a phenotypic feature of HeFH-related atherosclerosis, which ultimately affects future outcomes.
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Affiliation(s)
- Sayaka Funabashi
- Department of Cardiovascular Medicine National Cerebral and Cardiovascular Center Suita Japan
- Department of Cardiovascular Medicine Kyorin University Faculty of Medicine Mitaka Japan
| | - Yu Kataoka
- Department of Cardiovascular Medicine National Cerebral and Cardiovascular Center Suita Japan
| | - Mika Hori
- Department of Molecular Innovation in Lipidology, National Cerebral and Cardiovascular Center Research Institute Suita Japan
- Department of Endocrinology Research Institute of Environmental Medicine Nagoya University Nagoya Japan
| | - Masatsune Ogura
- Department of Molecular Innovation in Lipidology, National Cerebral and Cardiovascular Center Research Institute Suita Japan
- Department of Clinical Laboratory Technology, Faculty of Medical Science Juntendo University Urayasu Japan
| | - Takahito Doi
- Department of Cardiovascular Medicine National Cerebral and Cardiovascular Center Suita Japan
| | - Yoshiaki Morita
- Department of Radiology National Cerebral and Cardiovascular Center Suita Japan
| | - Eri Kiyoshige
- Department of Preventive Medicine and Epidemiology National Cerebral and Cardiovascular Center Suita Japan
| | - Kunihiro Nishimura
- Department of Preventive Medicine and Epidemiology National Cerebral and Cardiovascular Center Suita Japan
| | - Teruo Noguchi
- Department of Cardiovascular Medicine National Cerebral and Cardiovascular Center Suita Japan
| | - Mariko Harada-Shiba
- Cardiovascular Center Osaka Medical and Pharmaceutical University Takatsuki Japan
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Qureshi AI, Lodhi A, Ma X, Ahmed R, Kwok CS, Maqsood H, Liaqat J, Hassan AE, Siddiq F, Gomez CR, Suri MFK. Self-expanding versus balloon expandable stent for intracranial arterial stenosis: A systematic review and meta-analysis. J Neuroimaging 2024; 34:295-307. [PMID: 38225680 DOI: 10.1111/jon.13188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/12/2023] [Accepted: 12/22/2023] [Indexed: 01/17/2024] Open
Abstract
BACKGROUND AND PURPOSE There are limited data regarding the comparison of balloon expandable stents (BES) and self-expanding stents (SES) for the treatment of intracranial arterial stenosis. METHODS We conducted a systematic review to identify studies that compared SES and BES in patients with symptomatic intracranial arterial stenosis. Data were extracted from relevant studies found through a search of PubMed, Scopus, and Web of Science until from January 1, 2010 to September 28, 2023. Statistical pooling with random-effects meta-analysis was undertaken to compare the rates/severity of postprocedure stenosis, technical success, 30-day stroke and/or death, cumulative clinical endpoints, and restenosis rates. RESULTS A total of 20 studies were included. The standardized mean difference (SMD) for postprocedure stenosis (%) was significantly lower (SMD: -0.52, 95% confidence interval [CI]: -0.79 to -0.24, p < .001, 10 studies involving 1515 patients) with BES. The odds for 30-day stroke and/or death were significantly lower (odds ratio [OR] 0.68, 95% CI: 0.50-0.94, p = .019, 15 studies involving 2431 patients), and cumulative clinical endpoints on follow-up were nonsignificantly lower (OR 0.64, 95% CI: 0.30-1.37, p = .250, 10 studies involving 947 patients) with BES. The odds for restenosis during follow-up were significantly lower (OR 0.50, 95% CI: 0.31-0.80, p = .004, 13 studies involving 1115 patients) with BES. CONCLUSIONS Compared with SES, BES were associated with lower rates of postprocedure 30-day stroke and/or death with lower rates of restenosis during follow up and the treatment of symptomatic intracranial arterial stenosis.
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Affiliation(s)
- Adnan I Qureshi
- Zeenat Qureshi Stroke Institutes and Department of Neurology, University of Missouri, Columbia, Missouri, USA
| | - Abdullah Lodhi
- Zeenat Qureshi Stroke Institutes and Department of Neurology, University of Missouri, Columbia, Missouri, USA
| | - Xiaoyu Ma
- Department of Biostatistics, University of Missouri, Columbia, Missouri, USA
| | - Rehan Ahmed
- Zeenat Qureshi Stroke Institutes and Department of Neurology, University of Missouri, Columbia, Missouri, USA
| | - Chun Shing Kwok
- Department of Cardiology, Queen Elizabeth Hospital Birmingham, University Hospitals of Birmingham NHS Trust, Birmingham, UK
| | - Hamza Maqsood
- Zeenat Qureshi Stroke Institutes and Department of Neurology, University of Missouri, Columbia, Missouri, USA
| | - Jahanzeb Liaqat
- Department of Neurology, Pak Emirates Military Hospital Rawalpindi, Rawalpindi, Pakistan
| | - Ameer E Hassan
- Department of Neurology, University of Texas Rio Grande Valley School of Medicine, Harlingen, Texas, USA
| | - Farhan Siddiq
- Department of Neurosurgery, University of Missouri, Columbia, Missouri, USA
| | - Camilo R Gomez
- Zeenat Qureshi Stroke Institutes and Department of Neurology, University of Missouri, Columbia, Missouri, USA
| | - M Fareed K Suri
- Stroke Program, St. Cloud Hospital, Minneapolis, Minnesota, USA
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Huang B, Huang C, Alok K, Chen AY. Superficial Temporal Artery-to-Middle Cerebral Artery Bypass in Ischemic Stroke With Blood Pressure-Dependent Symptoms. Cureus 2024; 16:e56236. [PMID: 38618338 PMCID: PMC11016294 DOI: 10.7759/cureus.56236] [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] [Accepted: 03/14/2024] [Indexed: 04/16/2024] Open
Abstract
The efficacy of extracranial-intracranial (EC-IC) bypass in preventing ischemic stroke progression and recurrence is controversial. As per the current hypothesis, EC-IC bypass is most beneficial for patients with persistent hemodynamic insufficiency. Hence, various approaches have been used to evaluate hemodynamic insufficiency, including repeated single photon emission CT (SPECT) imaging or continuous monitoring of cerebral flow with transcranial Doppler ultrasound (TCD). However, both modalities are time- and resource-intensive. In this report, we discuss how EC-IC bypass turned out to be beneficial for a patient presenting with blood pressure-dependent severe aphasia and right hemiparesis due to middle cerebral artery (MCA) occlusion that failed thrombectomy. CT perfusion (CTP) scan at admission demonstrated a persistent volume of delayed perfusion without core infarct. Following the superficial temporal artery-to-middle cerebral artery (STA-MCA) bypass, the patient's National Institute of Health Stroke Scale (NIHSS) score improved from 12 to 1. Ischemic penumbra, as seen on CTP imaging, also improved after the STA-MCA bypass. Our case suggests that persistent volume of delayed perfusion and blood pressure-dependent neurological deficits can be used in tandem as selection criteria for EC-IC bypass.
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Affiliation(s)
| | | | - Khaled Alok
- Neurosurgery, Northwell Health, Manhasset, USA
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Nguyen VN, Motiwala M, Parikh K, Miller LE, Barats M, Nickele CM, Inoa V, Elijovich L, Goyal N, Hoit DA, Arthur AS, Morcos JJ, Khan NR. Extracranial-Intracranial Cerebral Revascularization for Atherosclerotic Vessel Occlusion: An Updated Systematic Review of the Literature. World Neurosurg 2023; 173:199-207.e8. [PMID: 36758795 DOI: 10.1016/j.wneu.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023]
Abstract
BACKGROUND Atherosclerotic steno-occlusive cerebrovascular disease includes extracranial carotid occlusive and intracranial atherosclerotic disease. Despite the negative findings in Carotid Occlusion Surgery Study (COSS), many large centers continue to report favorable results for revascularization surgery in select groups of patients. The aim of our study was to perform an updated systematic review to investigate the role of revascularization surgery for atherosclerotic steno-occlusive patients in the modern era. METHODS Five independent reviewers performed Preferred Reporting Items for Systematic Reviews and Meta-Analyses-guided literature searches in October 2022 to identify articles reporting clinical outcomes in adult patients undergoing bypass for atherosclerotic steno-occlusive disease. Primary endpoints used were perioperative and long-term ischemic strokes, intracerebral hemorrhage, bypass patency, and favorable clinical outcomes. Study quality was evaluated with Newcastle-Ottawa, JADAD, and the Oxford Center for Evidence-Based Medicine scales. RESULTS A total of 6709 articles were identified in the initial search. Of these articles, 50 met the inclusion criteria and were included in the systematic review. A notable increase in the proportion of articles published over the past 10 years was observed. There were 6046 total patients with 4447 bypasses performed over the period from 1978 to 2022. The average length of follow-up was 2.75 ± 2.71 years. The average Newcastle-Ottawa was 6.23 out of 9 stars. There was a significant difference in perioperative stroke (odds ratio [OR], 0.65 [0.48-0.87]; P = 0.004), long-term ischemia (OR, 0.32 [0.23-0.44]; P < 0.0001), overall ischemia (OR, 0.36 [0.28-0.44]; P < 0.0001), and favorable outcomes (OR, 3.63 [2.84-4.64]; P < 0.0001) when comparing pre-COSS to post-COSS time frames in favor of post-COSS. CONCLUSIONS Based on a systematic review of 50 articles, the existing literature indicates that long-term stroke rates and favorable outcomes for surgical revascularization for steno-occlusive disease have improved over time and are lower than previously reported. Improved patient selection, perioperative care, and surgical techniques may contribute to improved outcomes.
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Affiliation(s)
- Vincent N Nguyen
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Mustafa Motiwala
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Kara Parikh
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - L Erin Miller
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Michael Barats
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA
| | - Christopher M Nickele
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Violiza Inoa
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; University of Tennessee Health Sciences Center Department of Neurology, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Lucas Elijovich
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; University of Tennessee Health Sciences Center Department of Neurology, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Nitin Goyal
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; University of Tennessee Health Sciences Center Department of Neurology, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Daniel A Hoit
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Adam S Arthur
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA
| | - Jacques J Morcos
- University of Miami Department of Neurosurgery, Miami, Florida, USA
| | - Nickalus R Khan
- University of Tennessee Health Sciences Center Department of Neurosurgery, Memphis, Tennessee, USA; Department of Neurosurgery, Semmes Murphey Clinic, Memphis, Tennessee, USA.
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Dysregulation of Serum MicroRNA after Intracerebral Hemorrhage in Aged Mice. Biomedicines 2023; 11:biomedicines11030822. [PMID: 36979801 PMCID: PMC10044892 DOI: 10.3390/biomedicines11030822] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/01/2023] [Accepted: 02/06/2023] [Indexed: 03/12/2023] Open
Abstract
Stroke is one of the most common diseases that leads to brain injury and mortality in patients, and intracerebral hemorrhage (ICH) is the most devastating subtype of stroke. Though the prevalence of ICH increases with aging, the effect of aging on the pathophysiology of ICH remains largely understudied. Moreover, there is no effective treatment for ICH. Recent studies have demonstrated the potential of circulating microRNAs as non-invasive diagnostic and prognostic biomarkers in various pathological conditions. While many studies have identified microRNAs that play roles in the pathophysiology of brain injury, few demonstrated their functions and roles after ICH. Given this significant knowledge gap, the present study aims to identify microRNAs that could serve as potential biomarkers of ICH in the elderly. To this end, sham or ICH was induced in aged C57BL/6 mice (18–24 months), and 24 h post-ICH, serum microRNAs were isolated, and expressions were analyzed. We identified 28 significantly dysregulated microRNAs between ICH and sham groups, suggesting their potential to serve as blood biomarkers of acute ICH. Among those microRNAs, based on the current literature, miR-124-3p, miR-137-5p, miR-138-5p, miR-219a-2-3p, miR-135a-5p, miR-541-5p, and miR-770-3p may serve as the most promising blood biomarker candidates of ICH, warranting further investigation.
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Luo J, Wang T, Yang K, Wang X, Xu R, Gong H, Zhang X, Wang J, Yang R, Gao P, Ma Y, Jiao L. Endovascular therapy versus medical treatment for symptomatic intracranial artery stenosis. Cochrane Database Syst Rev 2023; 2:CD013267. [PMID: 36738471 PMCID: PMC9897029 DOI: 10.1002/14651858.cd013267.pub3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Intracranial artery stenosis (ICAS) is an arterial narrowing in the brain that can cause stroke. Endovascular therapy (ET) and conventional medical treatment (CMT) may prevent recurrent ischaemic stroke caused by ICAS. However, there is no consensus on the best treatment for people with ICAS. OBJECTIVES To evaluate the safety and efficacy of endovascular therapy plus conventional medical treatment compared with conventional medical treatment alone for the management of symptomatic intracranial artery stenosis. SEARCH METHODS We searched the Cochrane Stroke Group Trials Register, CENTRAL, MEDLINE, Embase, four other databases, and three trials registries on 16 August 2022. We contacted study authors and researchers when we required additional information. SELECTION CRITERIA We included randomised controlled trials (RCTs) comparing ET plus CMT with CMT alone for the treatment of symptomatic ICAS. ET modalities included angioplasty alone, balloon-mounted stent, and angioplasty followed by placement of a self-expanding stent. CMT included antiplatelet therapy in addition to control of risk factors such as hypertension, hyperlipidaemia, and diabetes. DATA COLLECTION AND ANALYSIS Two review authors independently screened the records to select eligible RCTs, then extracted data from them. We resolved any disagreements through discussion, reaching consensus decisions among the full team. We assessed risk of bias and applied the GRADE approach to assess the certainty of the evidence. The primary outcome was death by any cause or non-fatal stroke of any type within three months of randomisation. Secondary outcomes included all-cause death or non-fatal stroke of any type occurring more than three months after randomisation, ipsilateral stroke, transient ischaemic attack, ischaemic stroke, haemorrhagic stroke, death, restenosis, dependency, and health-related quality of life. MAIN RESULTS We included four RCTs with 989 participants who had symptomatic ICAS, with an age range of 18 to 85 years. We identified two ongoing RTCs. All trials had high risk of performance bias, as it was impossible to blind participants and personnel to the intervention. Three trials were terminated early. One trial was at high risk of attrition bias because of substantial loss to follow-up after one year and a high proportion of participants transferring from ET to CMT. The certainty of evidence ranged from low to moderate; we downgraded for imprecision. Compared to CMT alone, ET plus CMT probably increases the risk of short-term death or stroke (risk ratio (RR) 2.93, 95% confidence interval (CI) 1.81 to 4.75; 4 RCTs, 989 participants; moderate certainty), short-term ipsilateral stroke (RR 3.26, 95% CI 1.94 to 5.48; 4 RCTs, 989 participants; moderate certainty), short-term ischaemic stroke (RR 2.24, 95% CI 1.30 to 3.87; 4 RCTs, 989 participants; moderate certainty), and long-term death or stroke (RR 1.49, 95% CI 1.12 to 1.99; 4 RCTs, 970 participants; moderate certainty). Compared to CMT alone, ET plus CMT may increase the risk of short-term haemorrhagic stroke (RR 13.49, 95% CI 2.59 to 70.15; 4 RCTs, 989 participants; low certainty), short-term death (RR 5.43, 95% CI 1.21 to 24.40; 4 RCTs, 989 participants; low certainty), and long-term haemorrhagic stroke (RR 7.81, 95% CI 1.43 to 42.59; 3 RCTs, 879 participants; low certainty). It is unclear if ET plus CMT compared with CMT alone has an effect on the risk of short-term transient ischaemic attack (RR 0.79, 95% CI 0.30 to 2.07; 3 RCTs, 344 participants; moderate certainty), long-term transient ischaemic attack (RR 1.05, 95% CI 0.50 to 2.19; 3 RCTs, 335 participants; moderate certainty), long-term ipsilateral stroke (RR 1.78, 95% CI 1.00 to 3.17; 4 RCTs, 970 participants; moderate certainty), long-term ischaemic stroke (RR 1.56, 95% CI 0.77 to 3.16; 4 RCTs, 970 participants; moderate certainty), long-term death (RR 1.61, 95% CI 0.77 to 3.38; 4 RCTs, 951 participants; moderate certainty), and long-term dependency (RR 1.51, 95% CI 0.93 to 2.45; 4 RCTs, 947 participants; moderate certainty). No subgroup analyses significantly modified the effect of ET plus CMT versus CMT alone. The trials included no data on restenosis or health-related quality of life. AUTHORS' CONCLUSIONS This review provides moderate-certainty evidence that ET plus CMT compared with CMT alone increases the risk of short-term stroke and death in people with recent symptomatic severe ICAS. This effect was still apparent at long-term follow-up but appeared to be due to the early risks of ET; therefore, there may be no clear difference between the interventions in terms of their effects on long-term stroke and death. The impact of delayed ET intervention (more than three weeks after a qualifying event) warrants further study.
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Affiliation(s)
- Jichang Luo
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Tao Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Kun Yang
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xue Wang
- Medical Library of Xuanwu Hospital, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ran Xu
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Haozhi Gong
- China International Neuroscience Institute (China-INI), Beijing, China
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiao Zhang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Jie Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Renjie Yang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Peng Gao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Yan Ma
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
| | - Liqun Jiao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
- China International Neuroscience Institute (China-INI), Beijing, China
- Department of Interventional Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China
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Ota Y, Shah G. Imaging of Normal Brain Aging. Neuroimaging Clin N Am 2022; 32:683-698. [PMID: 35843669 DOI: 10.1016/j.nic.2022.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Understanding normal brain aging physiology is essential to improving healthy human longevity, differentiation, and early detection of diseases, such as neurodegenerative diseases, which are an enormous social and economic burden. Functional decline, such as reduced physical activity and cognitive abilities, is typically associated with brain aging. The authors summarize the aging brain mechanism and effects of aging on the brain observed by brain structural MR imaging and advanced neuroimaging techniques, such as diffusion tensor imaging and functional MR imaging.
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Affiliation(s)
- Yoshiaki Ota
- Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 East Medical Center Drive, UH B2, Ann Arbor, MI 48109, USA
| | - Gaurang Shah
- Division of Neuroradiology, Department of Radiology, University of Michigan, 1500 East Medical Center Drive, UH B2, Ann Arbor, MI 48109, USA.
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Li J, Fan Y, Zhang J, Xing S, Tang S, Li X, Dang C, Zeng J. Silent brain infarction is associated with carotid siphon calcification in ischemic stroke patients. Neuroimage Clin 2022; 35:103050. [PMID: 35644109 PMCID: PMC9157544 DOI: 10.1016/j.nicl.2022.103050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/04/2022] [Accepted: 05/15/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Silent brain infarction (SBI) had a higher prevalence in ischemic stroke patients than healthy population. Intracranial artery calcification, as the important component of atherosclerosis, is a known risk factor of ischemic stroke. Whether it is also the risk factor of SBI is uncertain. We aimed to assess the association between SBI and carotid siphon calcification (CSC) in ischemic stroke patients. METHODS We retrospectively collected consecutive data of acute ischemic stroke patients with and without SBI by Magnetic Resonance Imaging (MRI) and calcification using non-contrast Computerized Tomography (NCCT). We used a histopathologically validated method to score the circularity, thickness, and morphology of calcification. Clinical characteristics, prevalence and pattern (intimal and medial) of CSC were compared between patients with and without SBI. The association of CSC and SBI was investigated by logistic regression analysis. RESULTS Totally, 303 acute ischemic stroke patients were enrolled, of whom 260 (85.8%) had CSC. Patients with SBI were older (64.5 ± 10.4 years vs. 61.3 ± 12.1 years, P = 0.032), had a higher proportion of hypertension (77.5% vs. 65.7%, P = 0.035). Of the 260 CSC patients, there's no significant difference except for hyperlipidemia between patients with SBI and without SBI. The prevalence of intimal pattern of CSC was higher in those with SBI (adjusted odds ratio 2.42, 95% CI 1.219-4.794). CONCLUSIONS Patients with SBI at acute phase of ischemic stroke have more risk factors than mentioned previously. SBI associated with the intimal pattern of CSC which relate to the atherosclerosis process in symptomatic ischemic stroke patients.
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Affiliation(s)
- Jingjing Li
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Yuhua Fan
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Jian Zhang
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Shihui Xing
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Shujin Tang
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Xiaoshuang Li
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Chao Dang
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China
| | - Jinsheng Zeng
- Department of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department and Key Discipline of Neurology, Guangzhou 510080, China.
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Sakuta K, Yaguchi H, Kida H, Sato T, Miyagawa S, Mitsumura H, Fuga M, Ishibashi T, Okuno K, Murayama Y, Iguchi Y. The meaning of non-culprit stenosis in hyperacute stroke with large vessel occlusion. J Neurol Sci 2022; 436:120247. [DOI: 10.1016/j.jns.2022.120247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/13/2022] [Accepted: 03/28/2022] [Indexed: 10/18/2022]
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Nguyen L, Maingard J, Jhamb A, Brooks M, Barras C, Kok HK, Asadi H. Intracranial atherosclerotic disease and acute ischaemic stroke: A review of diagnosis and management. J Med Imaging Radiat Oncol 2021; 66:391-403. [PMID: 34894071 DOI: 10.1111/1754-9485.13366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 11/23/2021] [Indexed: 11/29/2022]
Abstract
Intracranial atherosclerotic disease is highly prevalent and a common cause of ischaemic stroke globally. With the increasing use of endovascular treatment for acute stroke management, computed tomography and magnetic resonance imaging have become an essential part of patient selection. In this review, we present the typical imaging findings of intracranial atherosclerosis and an overview of management as relevant to diagnostic and interventional radiologists.
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Affiliation(s)
- Lauren Nguyen
- NeuroInterventional Radiology Unit, Monash Health, Melbourne, Victoria, Australia
| | - Julian Maingard
- NeuroInterventional Radiology Unit, Monash Health, Melbourne, Victoria, Australia.,Department of Imaging, Monash Health, Melbourne, Victoria, Australia.,School of Medicine, Deakin University, Geelong, Victoria, Australia
| | - Ashu Jhamb
- Interventional Neuroradiology Service, Austin Health, Melbourne, Victoria, Australia
| | - Mark Brooks
- School of Medicine, Deakin University, Geelong, Victoria, Australia.,Interventional Neuroradiology Service, Austin Health, Melbourne, Victoria, Australia
| | - Christen Barras
- South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.,The University of Adelaide, Adelaide, South Australia, Australia
| | - Hong Kuan Kok
- Department of Radiology, Northern Health, Melbourne, Victoria, Australia
| | - Hamed Asadi
- NeuroInterventional Radiology Unit, Monash Health, Melbourne, Victoria, Australia.,Department of Imaging, Monash Health, Melbourne, Victoria, Australia.,School of Medicine, Deakin University, Geelong, Victoria, Australia.,Interventional Neuroradiology Service, Austin Health, Melbourne, Victoria, Australia
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11
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Blinkouskaya Y, Caçoilo A, Gollamudi T, Jalalian S, Weickenmeier J. Brain aging mechanisms with mechanical manifestations. Mech Ageing Dev 2021; 200:111575. [PMID: 34600936 PMCID: PMC8627478 DOI: 10.1016/j.mad.2021.111575] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 09/09/2021] [Accepted: 09/22/2021] [Indexed: 12/14/2022]
Abstract
Brain aging is a complex process that affects everything from the subcellular to the organ level, begins early in life, and accelerates with age. Morphologically, brain aging is primarily characterized by brain volume loss, cortical thinning, white matter degradation, loss of gyrification, and ventricular enlargement. Pathophysiologically, brain aging is associated with neuron cell shrinking, dendritic degeneration, demyelination, small vessel disease, metabolic slowing, microglial activation, and the formation of white matter lesions. In recent years, the mechanics community has demonstrated increasing interest in modeling the brain's (bio)mechanical behavior and uses constitutive modeling to predict shape changes of anatomically accurate finite element brain models in health and disease. Here, we pursue two objectives. First, we review existing imaging-based data on white and gray matter atrophy rates and organ-level aging patterns. This data is required to calibrate and validate constitutive brain models. Second, we review the most critical cell- and tissue-level aging mechanisms that drive white and gray matter changes. We focuse on aging mechanisms that ultimately manifest as organ-level shape changes based on the idea that the integration of imaging and mechanical modeling may help identify the tipping point when normal aging ends and pathological neurodegeneration begins.
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Affiliation(s)
- Yana Blinkouskaya
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Andreia Caçoilo
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Trisha Gollamudi
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Shima Jalalian
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States
| | - Johannes Weickenmeier
- Department of Mechanical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, United States.
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12
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Factors affecting in-stent restenosis after angioplasty with the Enterprise stent for intracranial atherosclerotic diseases. Sci Rep 2021; 11:10479. [PMID: 34006896 PMCID: PMC8131349 DOI: 10.1038/s41598-021-89670-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 04/19/2021] [Indexed: 11/08/2022] Open
Abstract
This study investigated factors affecting the safety and in-stent restenosis after intracranial stent angioplasty using the Enterprise stent for symptomatic intracranial atherosclerotic stenosis. Between January 2017 and March 2019, patients with intracranial atherosclerotic stenosis treated with Enterprise stent angioplasty were enrolled, including 400 patients in the modeling group and 89 patients in the validation group. The clinical factors affecting in-stent restenosis after Enterprise stent angioplasty in the modeling group were analyzed, and a logistic regression model of these factors was established and validated in the validation group. The receiver operating characteristic (ROC) curve and the area under the ROC curve (AUC) were analyzed. In the modeling group with 400 patients, there were 410 lesions, including 360 stenotic lesions and 50 occluded lesions, with 176 (42.9%) lesions in the anterior circulation and 234 (57.1%) in the posterior circulation. Successful stenting was performed in 398 patients (99.5%). Stenosis was significantly (P < 0.05) improved after stenting compared with before stenting (27.7% ± 2.9% vs. 77.9% ± 8.0%). Periprocedural complications included ischemic stroke (3.25%), hemorrhagic stroke (0.75%), and death (0.50%), with a total periprocedural complication rate of 4.0%. The first follow-up angiography was performed in 348 (87.0%) patients with 359 lesions 3.5-14 months (mean 5.7 months) after stenting. In-stent restenosis occurred in 62 (17.3%) lesions, while the other 295 (82.7%) had no restenosis. Lesion location, calcification degree, balloon expansion pressure, residual stenosis, intraprocedural dissection, and cerebral blood flow TICI grade were significant (P < 0.05) risk factors for in-stent restenosis. The in-stent restenosis prediction model was established as follows: P = 1/[1 + e-(-6.070-1.391 location + 2.745 calcification + 4.117 balloon inflation pressure + 2.195 intraprocedural dissection + 1.163 residual stenosis + 1.174 flow TC grade)]. In the validation group, the AUC in the ROC curve analysis was 0.902 (95% CI: 0.836-0.969), and when the cutoff value was 0.50, the sensitivity and specificity of this model were shown to be 76.92% and 80.26%, respectively, in predicting in-stent restenosis at angiographic follow-up, with a total coincidence rate of 79.78%. In conclusion, in-stent restenosis after intracranial Enterprise stenting is affected by stenosis location, calcification, balloon inflation pressure, intraprocedural arterial dissection, residual stenosis, and cerebral flow grade, and establishment of a logistic model with these factors can effectively predict in-stent restenosis.
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13
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Leng X, Hurford R, Feng X, Chan KL, Wolters FJ, Li L, Soo YO, Wong KSL, Mok VC, Leung TW, Rothwell PM. Intracranial arterial stenosis in Caucasian versus Chinese patients with TIA and minor stroke: two contemporaneous cohorts and a systematic review. J Neurol Neurosurg Psychiatry 2021; 92:jnnp-2020-325630. [PMID: 33785575 PMCID: PMC8142447 DOI: 10.1136/jnnp-2020-325630] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/21/2020] [Accepted: 01/04/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND Intracranial arterial stenosis (ICAS) is an important cause of stroke worldwide. Separate reports in Caucasians and Asians with stroke/transient ischaemic attack (TIA) have suggested lower ICAS prevalence in Caucasians, but there has been no direct comparisons of the two ethnic groups with the same criteria to define ICAS. METHODS Acute minor stroke or TIA patients in two cohorts respectively recruiting patients in Oxford (2011-2018, predominantly Caucasians) and Hong Kong (2011-2015, predominantly Chinese) were compared. ICAS was defined as ≥50% stenosis/occlusion in any major intracranial artery in MR/CT angiography. Prevalence, distribution and risk factors of ICAS were compared between the two cohorts. We also systematically reviewed literature on ICAS prevalence in stroke/TIA patients in different populations. RESULTS Among 1287 patients from Oxford and 691 from Hong Kong (mean age 69 vs 66), ICAS prevalence was higher in Chinese than in Caucasians (43.0% vs 20.0%; OR 3.02; 95% CI 2.47 to 3.70; p<0.001), independent of age (age-adjusted OR 3.73; 95% CI 3.00 to 4.63; p<0.001) and vascular risk factors (multivariable-adjusted OR 3.21; 95% CI 2.56 to 4.02; p<0.001). This ethnic difference was greater (p interaction=0.005) at age <70 years (OR 5.33; 95% CI 3.79 to 7.50; p<0.001) than at ≥70 years (OR 2.81; 95% CI 2.11 to 3.74; p<0.001). ICAS prevalence increased with age and with vascular risk factors in both cohorts, with equivalent prevalence in Chinese aged <60 years and Caucasians aged ≥80, and in Chinese with no vascular risk factor and Caucasians with two vascular risk factors. ICAS locations also differed between Chinese and Caucasian patients. CONCLUSIONS Chinese are more susceptible to ICAS than Caucasians, with an earlier onset age and a higher prevalence, independent of vascular risk factors.
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Affiliation(s)
- Xinyi Leng
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Robert Hurford
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Xueyan Feng
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Ka Lung Chan
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Frank J Wolters
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Linxin Li
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
| | - Yannie Oy Soo
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Ka Sing Lawrence Wong
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Vincent Ct Mok
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Thomas W Leung
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong, China
| | - Peter M Rothwell
- Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, Oxfordshire, UK
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Zhang P, Xing Y, Li H, Yao Q, Shen J, Liu Y, Wei Y, Guo Y. Efficacy and safety of rescue angioplasty and/or stenting for acute large artery occlusion with underlying intracranial atherosclerosis: A systematic review and meta-analysis. Clin Neurol Neurosurg 2021; 203:106538. [PMID: 33607582 DOI: 10.1016/j.clineuro.2021.106538] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/25/2021] [Accepted: 01/28/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE Intracranial angioplasty and/or stenting implantation is an important rescue treatment for the management of intracranial atherosclerosis-related occlusion (ICAS-O) after mechanical thrombectomy failure, but its safety and efficacy remain unclear. We investigated the safety and efficacy of rescue intracranial angioplasty and/or stenting for emergent large artery occlusion (LAO) with underlying ICAS. METHODS We searched for relevant full-text articles in EMBASE, PubMed and the Cochrane Central Register of Controlled Trials from inception to March 1, 2020. We calculated the odds ratios (ORs) using random-effects models for symptomatic intracranial hemorrhage (sICH), mortality, recanalization rate and favorable clinical outcome at 90 days between ICAS-O group treated by rescue therapy and Non ICAS-O group. RStudio software 1.3.959 was used to perform this meta-analysis. RESULTS Ten studies were included with a total of 1639 patients, of which 450 (27.5 %) were in the ICAS-O group treated with intracranial angioplasty and/or stenting, and 1189 (72.5 %) were in the Non ICAS-O group. Overall, intracranial angioplasty and/or stenting did not improve the recanalization rate (OR, 0.67 [0.26-1.76]; p = 0.419) or favorable functional outcome (OR, 1.01 [0.64-1.58]; p = 0.97) in patients with underlying ICAS-O, and the risk of sICH (OR, 0.99 [0.59-1.68]; p = 0.983) and mortality (OR, 1.26 [0.87-1.83]; p = 0.225) did not significantly differ between ICAS-O and Non ICAS-O. CONCLUSIONS From these observational study results, rescue intracranial angioplasty and/or stenting seems safe in patients with emergent LAO after attempted thrombectomy, but further rigorous studies are warranted to confirm its efficacy.
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Affiliation(s)
- Pengfei Zhang
- Department of Neurosurgery, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Yongguo Xing
- Department of Neurosurgery, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Hongbin Li
- Department of Neurology, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Qingping Yao
- Department of Neurology, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Jie Shen
- Department of Neurology, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Yi Liu
- Department of Neurology, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Ying Wei
- Department of Neurology, Beichen Traditional Chinese Medical Hospital Tianjin, Tianjin, 300400, China
| | - Yanting Guo
- Department of Pediatrics, Tianjin First Central Hospital, Tianjin, 300192, China.
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Nyasa C, Mwakikunga A, Tembo L, Dzamalala C, Ihunwo AO. Distribution of variations in anatomy of the circle of Willis: results of a cadaveric study of the Malawian population and review of literature. Pan Afr Med J 2021; 38:11. [PMID: 34567338 PMCID: PMC8444123 DOI: 10.11604/pamj.2021.38.11.27126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 12/18/2020] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION the circle of Willis is an anatomical structure of clinical importance particularly in the evaluation of neurovascular diseases. Individuals show considerable variations in the anatomical configuration of the circle of Willis. A cross-sectional study was conducted to determine the distribution of morphological variations of the circle of Willis in Malawians and compare with other ethnic groups. METHODS brains were collected from twenty-four recently deceased black Malawians during autopsy at Queen Elizabeth Central Hospital, a referral teaching hospital in Blantyre, Malawi and fixed in 10% buffered formalin. Digital images of the interpeduncular region (exposing the circle of Willis) were taken with an 18.4 megapixels camera from the base of the brain. Whole-circle and segmental parameters of the circle of Willis were assessed using the Osiris computer programme and classified based on a 22-type classification scheme. RESULTS the following morphological variations were observed: hypoplasia, aplasia, asymmetry and accessory vessels. Typical circle of Willis was seen in 26% of the cases. Only six of the original twenty-two types were observed. Consistent with most previous studies, types 1, 3, 4, 6, 8 and 9 were common while types 10-22 were rare. Three variants not previously described in the original scheme (unilateral PcoA aplasia, AcoA duplication, and PcoA aplasia with contralateral PcoA hypoplasia) were observed in this study. CONCLUSION anatomical variations of the circle of Willis in Malawians seem to be distributed in similar frequencies and patterns as in other more-diverse populations. Circle of Willis variants with potential predilection for atherogenesis and aneurysm formation exist in the Malawian population. These should be considered in clinical practice.
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Affiliation(s)
- Charles Nyasa
- Biomedical Sciences Department, Anatomy Division, College of Medicine, University of Malawi, Blantyre, Malawi
- Malawi-Liverpool Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | - Anthony Mwakikunga
- Biomedical Sciences Department, Anatomy Division, College of Medicine, University of Malawi, Blantyre, Malawi
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Lackson Tembo
- Biomedical Sciences Department, Anatomy Division, College of Medicine, University of Malawi, Blantyre, Malawi
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
| | - Charles Dzamalala
- Pathology Department, College of Medicine, University of Malawi, Blantyre, Malawi
| | - Amadi Ogonda Ihunwo
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Parktown, Johannesburg, South Africa
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Qin Y, Qian X, Luo X, Li Y, Wang D, Jiang J, Zhang Q, Liu M, Xiao J, Zhang Y, Diao S, Zhao H. Association Between Plasma Lipoprotein-Associated Phospholipase A2 and Plaque Vulnerability in TIA Patients With Unilateral Middle Cerebral Artery Stenosis. Front Neurol 2020; 11:574036. [PMID: 33178116 PMCID: PMC7596647 DOI: 10.3389/fneur.2020.574036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 09/02/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Plasma lipoprotein-associated phospholipase A2 (Lp-PLA2) has emerged as a novel biomarker for coronary atherosclerosis. However, the association between Lp-PLA2 and plaque vulnerability in atherosclerosis of cervicocerebral arteries remains poorly defined, especially for intracranial atherosclerotic stenosis (ICAS). We aimed to investigate the association between Lp-PLA2 and plaque vulnerability in transient ischemic attack (TIA) patients with unilateral middle cerebral artery stenoses (MCAs). Methods: In this study, a total of 207 patients were enrolled from April 2017 to April 2020. Clinical data were collected, and MCA plaques were examined with high-resolution magnetic resonance imaging (HRMRI). Baseline characteristics of patients were collected during hospitalization. Statistical comparisons were performed using Pearson's chi-squared test, Mann–Whitney U test, and the Breslow–Day/Tarone's test for the determination of heterogeneity in different age strata. Multivariate binary logistic analysis was used to investigate the potential independent predictors that were highly correlated to plaque vulnerability. Results: The results showed that a high Lp-PLA2 level (>221 ng/ml) was associated with plaque vulnerability in TIA patients with unilateral MCAs. High Lp-PLA2 was independently associated with plaque vulnerability in patients ≤ 60 years old [multivariate adjusted odds ratio (OR) = 9.854; 95% CI, 2.458–39.501] but not in patients >60 years old (multivariate adjusted OR = 1.901; 95% CI, 0.640–5.650). Predictors of plaque vulnerability in different age strata were also different. Conclusion: Lp-PLA2 levels may be correlated to plaque vulnerability in TIA patients with unilateral MCAs and might be a diagnostic biomarker for plaque vulnerability in this kind of patients, especially for ones aged ≤ 60 years old.
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Affiliation(s)
- Yiren Qin
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaoyan Qian
- Department of Neurology, The First People's Hospital of Kunshan, Kunshan, China
| | - Xue Luo
- Department of Neurology, Shiqian County People's Hospital, Tongren, China
| | - Yuanfang Li
- Department of Neurology, Shiqian County People's Hospital, Tongren, China
| | - Dapeng Wang
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jianhua Jiang
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Quanquan Zhang
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Meirong Liu
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Junhua Xiao
- Department of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yan Zhang
- Department of Neurology, The First People's Hospital of Kunshan, Kunshan, China
| | - Shanshan Diao
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hongru Zhao
- Department of Neurology, The First Affiliated Hospital of Soochow University, Suzhou, China
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Wang T, Luo J, Wang X, Yang K, Jadhav V, Gao P, Ma Y, Zhao N, Jiao L. Endovascular therapy versus medical treatment for symptomatic intracranial artery stenosis. Cochrane Database Syst Rev 2020; 8:CD013267. [PMID: 32789891 PMCID: PMC7437396 DOI: 10.1002/14651858.cd013267.pub2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Intracranial atherosclerotic stenosis (ICAS) is an arterial narrowing in the brain that can cause stroke. Endovascular therapy and medical management may be used to prevent recurrent ischaemic stroke caused by ICAS. However, there is no consensus on the best treatment for people with ICAS. OBJECTIVES To compare the safety and efficacy of endovascular therapy (ET) plus conventional medical treatment (CMT) with CMT alone for the management of symptomatic ICAS. SEARCH METHODS We searched the Cochrane Stroke Group Trials Register (30 August 2019), Cochrane Central Register of Controlled Trials (CENTRAL: to 30 August 2019), MEDLINE Ovid (1946 to 30 August 2019), Embase Ovid (1974 to 30 August 2019), Scopus (1960 to 30 August 2019), Science Citation Index Web of Science (1900 to 30 July 2019), Academic Source Complete EBSCO (ASC: 1982 to 30 July 2019), and China Biological Medicine Database (CBM: 1978 to 30 July 2019). We also searched the following trial registers: ClinicalTrials.gov, WHO International Clinical Trials Registry Platform, and Stroke Trials Registry. We also contacted trialists and researchers where additional information was required. SELECTION CRITERIA Randomised controlled trials (RCTs) comparing ET plus CMT with CMT alone for the treatment of symptomatic ICAS. ET modalities included angioplasty alone, balloon-mounted stent, and angioplasty followed by placement of a self-expanding stent. CMT included antiplatelet therapy in addition to control of risk factors such as hypertension, hyperlipidaemia, and diabetes. DATA COLLECTION AND ANALYSIS Two review authors independently screened trials to select potentially eligible RCTs and extracted data. Any disagreements were resolved by discussing and reaching consensus decisions with the full team. We assessed risk of bias and applied the GRADE approach to assess the quality of the evidence. The primary outcome was death of any cause or non-fatal stroke of any type within three months of randomisation. Secondary outcomes included any-cause death or non-fatal stroke of any type more than three months of randomisation, ipsilateral stroke, type of recurrent event, death, restenosis, dependency, and health-related quality of life. MAIN RESULTS We included three RCTs with 632 participants who had symptomatic ICAS with an age range of 18 to 85 years. The included trials had high risks of performance bias and other potential sources of bias due to the impossibility of blinding of the endovascular intervention and early termination of the trials. Moreover, one trial had a high risk of attrition bias because of the high rate of loss of one-year follow-up and the high proportion of participants transferred from endovascular therapy to medical management. The quality of evidence ranged from low to moderate, downgraded for imprecision. Compared to CMT, ET probably results in a higher rate of 30-day death or stroke (risk ratio (RR) 3.07, 95% confidence interval (CI) 1.80 to 5.24; 3 RCTs, 632 participants, moderate-quality evidence), 30-day ipsilateral stroke (RR 3.54, 95% CI 1.98 to 6.33; 3 RCTs, 632 participants, moderate-quality evidence), 30-day ischaemic stroke (RR 2.52, 95% CI 1.37 to 4.62; 3 RCTs, 632 participants, moderate-quality evidence), and 30-day haemorrhagic stroke (RR 15.53, 95% CI 2.10 to 115.16; 3 RCTs, 632 participants, low-quality evidence). ET was also likely associated with a worse outcome in one-year death or stroke (RR 1.69, 95% CI 1.21 to 2.36; 3 RCTs, 632 participants, moderate-quality evidence), one-year ipsilateral stroke (RR 2.28, 95% CI 1.52 to 3.42; 3 RCTs, 632 participants, moderate-quality evidence), one-year ischaemic stroke (RR 2.07, 95% CI 1.37 to 3.13; 3 RCTs, 632 participants, moderate-quality evidence), and one-year haemorrhagic stroke (RR 10.13, 95% CI 1.31 to 78.51; 2 RCTs, 521 participants, low-quality evidence). There were no significant differences between ET and CMT in 30-day transient ischaemic attacks (TIA) (RR 0.52, 95% CI 0.11 to 2.35, P = 0.39; 2 RCTs, 181 participants, moderate-quality evidence), 30-day death (RR 5.53, 95% CI 0.98 to 31.17, P = 0.05; 3 RCTs, 632 participants, low-quality evidence), one-year TIA (RR 0.82, 95% CI 0.32 to 2.12; 2 RCTs, 181 participants, moderate-quality evidence), one-year death (RR 1.20, 95% CI 0.50 to 2.86, P = 0.68; 3 RCTs, 632 participants, moderate-quality evidence), and one-year dependency (RR 1.90, 95% CI 0.91 to 3.97, P = 0.09; 3 RCTs, 613 participants, moderate-quality evidence). No data on restenosis and health-related quality of life for meta-analysis were available from the included trials. Two RCTs are ongoing. AUTHORS' CONCLUSIONS This systematic review provides moderate-quality evidence showing that ET, compared with CMT, in people with recent symptomatic severe intracranial atherosclerotic stenosis probably does not prevent recurrent stroke and appears to carry an increased hazard. The impact of delayed ET intervention (more than three weeks after a qualifying event) is unclear and may warrant further study.
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Affiliation(s)
- Tao Wang
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Jichang Luo
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xue Wang
- Medical Library of Xuanwu Hospital, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kun Yang
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Vikram Jadhav
- Neurosciences, Essentia Health, St Mary's Medical Center, Duluth, Minnesota, USA
- Neurosciences, Stroke and Cerebrovascular, CentraCare Health System, St Cloud, Minnesota, USA
| | - Peng Gao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yan Ma
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Na Zhao
- Department of Anesthesiology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Liqun Jiao
- Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
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Jia L, Zhang N, Kukun H, Ren L, Zhang L, Lyu J, Liang D, Li Y, Zheng H, Jia W, Liu X. Three-dimensional intra- and extracranial arterial vessel wall joint imaging in patients with cerebrovascular disease. Eur J Radiol 2020; 126:108921. [DOI: 10.1016/j.ejrad.2020.108921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 01/22/2020] [Accepted: 02/24/2020] [Indexed: 11/16/2022]
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Association of Newly Found Asymptomatic Intracranial Artery Stenosis and Ideal Cardiovascular Health Metrics in Chinese Community Population. Sci Rep 2020; 10:7200. [PMID: 32350306 PMCID: PMC7190703 DOI: 10.1038/s41598-020-63927-3] [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: 12/04/2018] [Accepted: 03/25/2020] [Indexed: 12/28/2022] Open
Abstract
In the general population, there is a strong inverse relationship between the number of ideal cardiovascular health (CVH) metrics and the total incidence of cardiovascular diseases and stroke. However, the prevalence of ideal CVH is extremely low and there are few studies on its association with newly found asymptomatic intracranial arterial stenosis (AICAS). Therefore, we performed this prospective study to assess the relationship between the newly found AICAS and ideal CVH metrics in the Chinese community population. Seven ideal CVH metrics of 3,475 participants in the Asymptomatic Polyvascular Abnormalities Community study (APAC) conducted in China (1,962 men and 1,513 women between the ages of 45 and 75 years) were collected. Based on the occurrence of newly found AICAS, all participants were divided into the AICAS group and non-ICAS group. Prevalence of ideal CVH metrics was compared between the two groups. Logistic regression was used to estimate the association of newly found AICAS with ideal CVH metrics. The result was the number of ideal CVH metrics was strongly associated with age, gender, education levels and family income (each P < 0.0001). Among the seven CVH metrics total cholesterol (TC) was the only one showing significant difference between the newly found AICAS group and non-ICAS group in our 2 years observation. Participants with less ideal CVH metrics (≤3) were associated with significantly higher prevalence of AICAS than those with more (>3) ideal CVH metrics (OR, 1.27; P = 0.045). Furthermore, less (≤3) ideal CVH metrics was markedly associated with higher incidence of AICAS for all participants, younger participants (<60 years) (OR, 1.34; P = 0.046) and men participants (OR, 1.53; P = 0.032) after adjustment for gender, age, education level, family income and stroke history. Thus we conclude that participants with newly found AICAS have high prevalence of total cholesterol status, and Individuals with low ideal CVH metrics (≤3) are associated with significantly higher prevalence of asymptomatic ICAS, especially in high-risk population of young and men participants. Therefore, primordial prevention of stroke should also focus on those high-risk populations.
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Sun X, Luo M, Li J, Lai R, Lin J, Wang Y, Xu X, Wu S, Sheng W. Prevalence of RNF213 variants in symptomatic intracranial arterial stenosis/occlusion in China. Mol Genet Genomics 2020; 295:635-643. [PMID: 32020275 DOI: 10.1007/s00438-020-01650-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 01/18/2020] [Indexed: 10/25/2022]
Abstract
The ring finger protein 213 gene (RNF213) rs112735431 was significantly associated with intracranial artery stenosis/occlusion disease (ICASO) in Japan and Korea and to a lesser degree in China. We conducted a case-control study to examine the prevalence and correlates of the RNF213 rare variants in Chinese patients with symptomatic ICASO. A total of 503 cases including 390 ischemic stroke patients (ICASO-IS), 113 intracranial hemorrhage patients (ICASO-ICH) and 227 control subjects were recruited. The snapshot technique was used for RNF213 rare variants analysis, including rs112735431, rs148731719, rs37144111 and rs138130613. Moreover, a meta-analysis was performed to explore the relationship between RNF213 variants and ICASO in Asian. In our case-control study, we found that the rs138130613 variant was significantly associated with ICASO-IS (OR = 9.92, 95% CI 1.24-79.19, p = 0.03). The mean age of first ischemic stroke onset of variant carriers was earlier than the noncarriers (51.3 ± 18.0 versus 66.0 ± 12.9 years old, p = 0.02), but the conventional atherosclerotic risk factors and the characteristics of artery stenosis did not differ between them. In addition, the meta-analysis showed significant association between the rs112735431 polymorphism and the ICASO or ICASO-IS, and this variant was found more often in women and young-onset patients in Asia. This study suggests that the RNF213 rs112735431 and rs138130613 are genetic risk variants for ischemic stroke with intracranial artery stenosis/occlusion in China and rs112735431 is also associated with the high risk of ICASO in Asia. Further large-scale investigation of the RNF213 gene will provide new insights into pathogenetic mechanisms of symptomatic ICASO.
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Affiliation(s)
- Xunsha Sun
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Man Luo
- Department of Neurology, The First Affiliated Hospital, Guangxi Medical University, Nanning, China
| | - Jiaoxing Li
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Rong Lai
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jing Lin
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yufang Wang
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaowei Xu
- Department of Neurology, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, China
| | - Shaoqing Wu
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
| | - Wenli Sheng
- Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.
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Nam KW, Kwon HM, Jeong HY, Park JH, Kwon H, Jeong SM. Intracranial Atherosclerosis and Stage 1 Hypertension Defined by the 2017 ACC/AHA Guideline. Am J Hypertens 2020; 33:92-98. [PMID: 31433051 DOI: 10.1093/ajh/hpz138] [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] [Received: 07/28/2019] [Revised: 08/04/2019] [Accepted: 08/14/2019] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND In 2017, the American College of Cardiology (ACC)/American Heart Association (AHA) released a new, stricter definition of stage 1 hypertension which was previously considered prehypertension. However, impacts of the novel stage 1 hypertension on deleterious target-organ outcomes are still controversial. In this study, we evaluated the relationship between this newly defined stage 1 hypertension and the presence of intracranial atherosclerosis (ICAS) lesions in neurologically healthy participants. METHODS We assessed consecutive participants in routine health checkups between January 2006 and December 2013. Blood pressure (BP) was classified according to the 2017 ACC/AHA hypertension guideline, and ICAS was defined as occlusion or ≥50% stenosis of intracranial vessels on flight magnetic resonance angiography. RESULTS Among 3,111 healthy participants (mean age: 56 years, sex: 54% men), 85 (3%) had ICAS lesions. In multivariate analysis, stage 1 hypertension (adjusted odds ratio: 2.46, 95% confidence interval: 1.10-5.51, P = 0.029) remained an independent predictor of ICAS after adjustment for confounders. Stage 2 hypertension showed a higher odds ratio and a lower P value, indicating a dose-response effect. Age and HbA1c level were also significantly associated with ICAS, independent of the BP categories. The ICAS lesion burden showed a dose-response effect across the BP categories (P for trend <0.001), whereas ICAS lesion location did not (P for trend = 0.699). CONCLUSIONS We demonstrated that stage 1 hypertension, defined according to the 2017 ACC/AHA guideline, was associated with a higher prevalence and burden of ICAS lesions in a neurologically healthy population.
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Affiliation(s)
- Ki-Woong Nam
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Hospital, Seoul, South Korea
| | - Hyung-Min Kwon
- Department of Neurology, Seoul National University College of Medicine and Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, South Korea
| | - Han-Yeong Jeong
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Hospital, Seoul, South Korea
| | - Jin-Ho Park
- Department of Family Medicine, Seoul National University College of Medicine and Seoul National University Hospital, Seoul, South Korea
| | - Hyuktae Kwon
- Department of Family Medicine, Seoul National University College of Medicine and Seoul National University Hospital, Seoul, South Korea
| | - Su-Min Jeong
- Department of Family Medicine, Seoul National University College of Medicine and Seoul National University Hospital, Seoul, South Korea
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Yang M, Wang A, Li J, Zhao X, Liu L, Meng X, Jing J, Zhang N, Johnston SC, Wang Y, Wang Y. Lp-PLA2 and dual antiplatelet agents in intracranial arterial stenosis. Neurology 2019; 94:e181-e189. [DOI: 10.1212/wnl.0000000000008733] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 07/08/2019] [Indexed: 11/15/2022] Open
Abstract
ObjectiveTo evaluate the interaction effect of lipoprotein-associated phospholipase A2 (Lp-PLA2) activity on the efficacy and safety of dual/single antiplatelet therapy in patients with and without intracranial arterial stenosis (ICAS) by the Clopidogrel in High-Risk Patients with Acute Non-disabling Cerebrovascular Events trial.MethodsPatients with both MRI analysis and Lp-PLA2 testing results were included in the current subanalysis. The interaction of Lp-PLA2 activity with the effects of dual and single antiplatelet therapy were analyzed through Cox proportional hazards regressions model.ResultsAmong the 797 patients, the mean age was 63.1 ± 10.8 years, 518 (65%) were men, 356 (44.7%) had ICAS, and 441 (55.3%) did not. There were significantly more patients with elevated Lp-PLA2 activity in the ICAS group than in the non-ICAS group (43.8% vs 35.4%, p = 0.02). There was significant interaction between Lp-PLA2 activity levels and the 2 antiplatelet therapies for prevention of stroke recurrences and combined vascular events even after adjustment for confounding factors exclusively for patients with ICAS (p = 0.017, 0.017, respectively), but not for those without (p = 0.332, 0.674, respectively). Compared with aspirin alone, dual antiplatelet therapy significantly reduced the risk of stroke recurrences and combined vascular events (adjusted hazard ratio 0.33 [0.12–0.89], p = 0.028; 0.33 [0.12–0.89], p = 0.028, respectively) for patients with ICAS and nonelevated Lp-PLA2 activity.ConclusionsPresence of both ICAS and nonelevated Lp-PLA2 activity may predict better response to dual antiplatelet therapy in prevention of recurrent strokes and combined vascular events for patients with minor stroke or high-risk TIA.Clinicaltrials.gov identifierNCT00979589.
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Ilyas A, Chen CJ, Ironside N, Buell TJ, Chagoya G, Schmalz PG, Stetler WR, Andaluz N, James RF, Ding D. Medical Management Versus Surgical Bypass for Symptomatic Intracranial Atherosclerotic Disease: A Systematic Review. World Neurosurg 2019; 129:62-71. [DOI: 10.1016/j.wneu.2019.05.223] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 05/25/2019] [Accepted: 05/27/2019] [Indexed: 11/15/2022]
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Chen HX, Wang LJ, Yang Y, Yue FX, Chen LM, Xing YQ. The prevalence of intracranial stenosis in patients at low and moderate risk of stroke. Ther Adv Neurol Disord 2019; 12:1756286419869532. [PMID: 31447935 PMCID: PMC6693021 DOI: 10.1177/1756286419869532] [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: 05/19/2018] [Accepted: 07/22/2019] [Indexed: 01/05/2023] Open
Abstract
Background: Previous studies assessing the risk of stroke in the general population
performed screening with Doppler ultrasonography only for high-risk patients
and neglected low- and moderate-risk patients. The aims of this study were
to explore the current prevalence of intracranial arterial stenosis (ICAS)
and analyze its association with different levels of stroke risk and risk
factors based on the risk assessment scale for stroke used in China. Methods: A total of 3654 participants who underwent transcranial Doppler ultrasound
(TCD) were eligible for inclusion. Information regarding demographic
characteristics and risk factors such as alcohol consumption and
hypertension was collected through interviews and questionnaires and used to
analyze the association of ICAS with different levels of stroke risk and
risk factors. Results: The mean age of 501 subjects diagnosed with at least one ICAS was higher than
that of participants without ICAS (57.13 ± 9.56 years and
55.52 ± 9.35 years, respectively). After adjusting for confounding factors,
gender, education, residence, hypertension and personal history of stroke
were associated with ICAS. The odds ratios for ICAS in patients with
hypertension and a personal history of stroke were 1.655 [95% confidence
interval (CI): 1.341–2.043] and 1.854 (95% CI: 1.371–2.508), respectively.
In addition, participants in the low- and moderate-risk stroke groups
accounted for an unexpectedly high proportion of individuals with ICAS (up
to 38.3%). Results from multivariate analyses indicated that the adjusted
odds ratios for ICAS in patients with moderate and high stroke risks
versus those with a low stroke risk were 1.603 (95% CI:
1.171–2.195) and 1.612 (95% CI: 1.272–2.042), respectively. Conclusion: The prevalence of ICAS is high in northeast China and increases with the
level of stroke risk. However, the proportion of patients with ICAS among
those with low and moderate stroke risks should also be noted.
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Affiliation(s)
- Hong-Xiu Chen
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Li-Juan Wang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Yi Yang
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Fei-Xue Yue
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Li-Min Chen
- Department of Neurology, The First Hospital of Jilin University, Changchun, China
| | - Ying-Qi Xing
- Department of Neurology, The First Hospital of Jilin University, Xinmin Street 71, Changchun 130021, China
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Sayad A, Akbari MT, Inoko H, Khazaei M, Mehdizadeh B, Taheri M, Ghafouri-Fard S. Association between human leucocyte antigen alleles and risk of stroke in Iranian population. Int J Immunogenet 2019; 46:179-191. [PMID: 30884125 DOI: 10.1111/iji.12421] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/11/2019] [Accepted: 02/18/2019] [Indexed: 11/30/2022]
Abstract
Previous studies have demonstrated associations between human leucocyte antigen (HLA) and some types of ischaemic stroke. In the present study, we genotyped HLA-A,-B and -DRB1 alleles in 140 Iranian patients with history of ischaemic stroke and 140 age-/sex-matched healthy subjects. No significant difference has been found in the distribution of HLA-A and B alleles between cases and controls. The DRB1*16 allele was significantly over-represented in patient group compared with control group (Adjusted p value = 0.048). Other HLA-DRB1 alleles were not associated with stroke risk. The HLA-B*35,B*52 genotype was significantly more prevalent among patients compared with controls (Adjusted p value = 0.03, OR [95% CI] = 9.3 [1.3, 407.2]). Several HLA haplotypes were associated with risk of stroke in the assessed population. The current study provides further evidences for participation of HLA in conferring risk of ischaemic stroke.
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Affiliation(s)
- Arezou Sayad
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taghi Akbari
- Department of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hidetoshi Inoko
- Division of Molecular Life Science, Department of Genetic Information, Tokai University School of Medicine, Tokyo, Japan
| | - Mojtaba Khazaei
- Neurophysiology Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Bijan Mehdizadeh
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Wang T, Yang K, Wang X, Luo J, Gao P, Ma Y, Jadhav V, Zhao N, Jiao L. Endovascular therapy versus medical treatment for symptomatic intracranial artery stenosis. Hippokratia 2019. [DOI: 10.1002/14651858.cd013267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tao Wang
- Xuanwu Hospital, Capital Medical University; Department of Neurosurgery; No. 45 Changchun Street Beijing China 100053
| | - Kun Yang
- Xuanwu Hospital, Capital Medical University; Department of Evidence-based Medicine; No. 45 Changchun Street Beijing China 100053
| | - Xue Wang
- Xuanwu Hospital, Capital Medical University; Medical Library of Xuanwu Hospital; No. 45 Changchun Street Beijing China 100053
| | - Jichang Luo
- Xuanwu Hospital, Capital Medical University; Department of Neurosurgery; No. 45 Changchun Street Beijing China 100053
| | - Peng Gao
- Xuanwu Hospital, Capital Medical University; Department of Neurosurgery; No. 45 Changchun Street Beijing China 100053
| | - Yan Ma
- Xuanwu Hospital, Capital Medical University; Department of Neurosurgery; No. 45 Changchun Street Beijing China 100053
| | - Vikram Jadhav
- CentraCare Health System; Neurosciences - Stroke and Cerebrovascular; 1406 Sixth Ave North St Cloud Minnesota USA
| | - Na Zhao
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University; Department of Anesthesiology; Beijing China
| | - Liqun Jiao
- Xuanwu Hospital, Capital Medical University; Department of Neurosurgery; No. 45 Changchun Street Beijing China 100053
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Chen L, Mossa-Basha M, Sun J, Hippe DS, Balu N, Yuan Q, Pimentel K, Hatsukami TS, Hwang JN, Yuan C. Quantification of morphometry and intensity features of intracranial arteries from 3D TOF MRA using the intracranial artery feature extraction (iCafe): A reproducibility study. Magn Reson Imaging 2018; 57:293-302. [PMID: 30580079 DOI: 10.1016/j.mri.2018.12.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/22/2018] [Accepted: 12/19/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Accurate and reliable vascular features extracted from 3D time-of-flight (TOF) magnetic resonance angiography (MRA) can help evaluate cerebral vascular diseases and conditions. The goal of this study was to evaluate the reproducibility of an intracranial artery feature extraction (iCafe) algorithm for quantitative analysis of intracranial arteries from TOF MRA. METHODS Twenty-four patients with known intracranial artery stenosis were recruited and underwent two separate MRA scans within 2 weeks of each other. Each dataset was blinded to associated imaging and clinical data and then processed independently using iCafe. Inter-scan reproducibility analysis was performed on the 24 pairs of scans while intra-/inter-operator reproducibility and stenosis detection were assessed on 8 individual MRA scans. After tracing the vessels visualized on TOF MRA, iCafe was used to automatically extract the locations with stenosis and eight other vascular features. The vascular features included the following six morphometry and two signal intensity features: artery length (total, distal, and proximal), volume, number of branches, average radius of the M1 segment of the middle cerebral artery, and average normalized intensity of all arteries and large vertical arteries. A neuroradiologist independently reviewed the images to identify locations of stenosis for the reference standard. Reproducibility of stenosis detection and vascular features was assessed using Cohen's kappa, the intra-class correlation coefficient (ICC), and within-subject coefficient of variation (CV). RESULTS The segment-based sensitivity of iCafe for stenosis detection ranged from 83.3-91.7% while specificity was 97.4%. Kappa values for inter-scan and intra-operator reproducibility were 0.73 and 0.77, respectively. All vascular features demonstrated excellent inter-scan and intra-operator reproducibility (ICC = 0.91-1.00, and CV = 1.21-8.78% for all markers), and good to excellent inter-operator reproducibility (ICC = 0.76-0.99, and CV = 3.27-15.79% for all markers). CONCLUSION Intracranial artery features can be reliably quantified from TOF MRA using iCafe to provide both clinical diagnostic assistance and facilitate future investigative quantitative analyses.
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Affiliation(s)
- Li Chen
- Department of Electrical Engineering, University of Washington, Seattle, WA 98195, USA.
| | - Mahmud Mossa-Basha
- Department of Radiology, University of Washington, Seattle, WA 98195, USA.
| | - Jie Sun
- Department of Radiology, University of Washington, Seattle, WA 98195, USA.
| | - Daniel S Hippe
- Department of Radiology, University of Washington, Seattle, WA 98195, USA.
| | - Niranjan Balu
- Department of Radiology, University of Washington, Seattle, WA 98195, USA.
| | - Quan Yuan
- Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Kristi Pimentel
- Department of Radiology, University of Washington, Seattle, WA 98195, USA.
| | - Thomas S Hatsukami
- Department of Surgery, University of Washington, Seattle, WA 98195, USA.
| | - Jenq-Neng Hwang
- Department of Electrical Engineering, University of Washington, Seattle, WA 98195, USA.
| | - Chun Yuan
- Department of Radiology, University of Washington, Seattle, WA 98195, USA.
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Gruber P, Braun C, Kahles T, Hlavica M, Anon J, Diepers M, Nedeltchev K, Berberat J, Remonda L. Percutaneous transluminal angioplasty using the novel drug-coated balloon catheter SeQuent Please NEO for the treatment of symptomatic intracranial severe stenosis: feasibility and safety study. J Neurointerv Surg 2018; 11:719-722. [DOI: 10.1136/neurintsurg-2018-014378] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/16/2018] [Accepted: 10/19/2018] [Indexed: 11/03/2022]
Abstract
ObjectivesIntracranial arteriosclerotic disease is a relevant cause of ischemic stroke worldwide with a high recurrence rate despite best medical treatment. Following the SAMMPRIS trial, endovascular treatment has remained a second-line therapy. Meanwhile, there has been significant advances in device technology. SeQuent Please NEO is a novel polymer-free, drug-coated (paclitaxel/iopromide) balloon (DCB) primarily designed for cardiology. Because of its high flexibility and pushability, it may also be suitable for intracranial use. The aim of this study was to assess the feasibility and safety of SeQuent Please NEO DCB in symptomatic intracranial severe stenosis.MethodsA single-center retrospective cohort study of patients with symptomatic intracranial severe stenosis treated with SeQuent Please NEO DCB was performed at a tertiary stroke center.ResultsTen patients (all men, median age 73 years (IQR 69–77)) were included. Median pre-treatment stenosis grade was 78% (IQR 75–80%) with four internal carotid artery, two mid-basilar artery, and four vertebral artery lesions. Median post-treatment stenosis grade was 50% (IQR 45–53%). Successful angioplasty was achieved in all cases without technical failure. There were no cases of peri-procedural reocclusion and no deaths at median follow-up of 3 months (IQR 2–3).ConclusionIn this pilot study, SeQuent Please NEO DCB was feasible and safe in the treatment of symptomatic intracranial severe stenosis. It might represent a promising alternative to medical treatment in selected cases.
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Ueda T, Takada T, Nogoshi S, Yoshie T, Takaishi S, Fukano T. Long-Term Outcome of Balloon Angioplasty Without Stenting for Symptomatic Middle Cerebral Artery Stenosis. J Stroke Cerebrovasc Dis 2018. [DOI: 10.1016/j.jstrokecerebrovasdis.2018.02.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Li J, Wang A, Zhao X, Liu L, Meng X, Lin J, Jing J, Zou X, Wang Y, Wang Y. High-sensitive C-reactive protein and dual antiplatelet in intracranial arterial stenosis. Neurology 2018; 90:e447-e454. [DOI: 10.1212/wnl.0000000000004928] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 10/12/2017] [Indexed: 11/15/2022] Open
Abstract
ObjectiveTo determine the relationship of high-sensitive C-reactive protein (hsCRP) and the efficacy and safety of dual antiplatelet therapy in patients with and without intracranial arterial stenosis (ICAS) in the Clopidogrel in High-Risk Patients with Acute Non-disabling Cerebrovascular Events (CHANCE) trial.MethodsA subgroup of 807 patients with both magnetic resonance angiography images and hsCRP measurement was analyzed. Cox proportional hazards models were used to assess the interaction of hsCRP levels with the effects of dual and single antiplatelet therapy.ResultsA total of 358 (44.4%) patients had ICAS and 449 (55.6%) did not. The proportion of patients with elevated hsCRP levels was higher in the ICAS group than in the non-ICAS group (40.2% vs 30.1%, p = 0.003). There was significant interaction between hsCRP and the 2 antiplatelet therapy groups in their effects on recurrent stroke after adjustment for confounding factors in the patients with ICAS (p = 0.012), but not in those without (p = 0.256). Compared with aspirin alone, clopidogrel plus aspirin significantly reduced the risk of recurrent stroke only in the patients with ICAS and nonelevated hsCRP levels (adjusted hazard ratio 0.27; 95% confidence interval 0.11 to 0.69; p = 0.006). Similar results were observed for composite vascular events. No significant difference in bleeding was found.ConclusionsPresence of both ICAS and nonelevated hsCRP levels may predict better response to dual antiplatelet therapy in reducing new stroke and composite vascular events in minor stroke or high-risk TIA patients. Further large-scale randomized and controlled clinical trials are needed to confirm this finding.
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Kim JS, Bang OY. Medical Treatment of Intracranial Atherosclerosis: An Update. J Stroke 2017; 19:261-270. [PMID: 29037012 PMCID: PMC5647642 DOI: 10.5853/jos.2017.01830] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/07/2017] [Accepted: 09/14/2017] [Indexed: 12/13/2022] Open
Abstract
For patients with symptomatic intracranial atherosclerosis (ICAS), antithrombotic agents are the mainstay of therapy. Anticoagulation (warfarin) is not widely used since it is not more effective than aspirin and carries a high risk of bleeding. New oral anticoagulants are showing promise, but their use has not been investigated in appropriate clinical trials. Since the recurrent stroke risk is high with aspirin monotherapy, dual antiplatelets are considered in the early stage of symptomatic ICAS. Based on the Clopidogrel in High-Risk Patients with Acute Nondisabling Cerebrovascular Events (CHANCE) and Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS) results, aspirin plus clopidogrel has been recommended. However, this combination was not superior to aspirin monotherapy in patients with ICAS in the CHANCE substudy. Progression of ICAS is common, and it is associated with recurrent strokes. In the Trial of Cilostazol in Symptomatic Intracranial Arterial Stenosis (TOSS) study, aspirin plus cilostazol was more effective than aspirin monotherapy in preventing progression. The TOSS II trial showed that the overall change in stenosis was better with aspirin plus cilostazol than with aspirin plus clopidogrel. Aside from antithrombotic therapy, risk factor management is critical for secondary prevention, and high blood pressure is clearly linked to recurrent stroke. However, blood pressure may have to be cautiously managed in the early stage of stroke. Considering that ICAS is the major cause of stroke worldwide, further investigations are needed to establish optimal management strategies for patients with ICAS.
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Affiliation(s)
- Jong S Kim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Oh Young Bang
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Yang WJ, Wong KS, Chen XY. Intracranial Atherosclerosis: From Microscopy to High-Resolution Magnetic Resonance Imaging. J Stroke 2017; 19:249-260. [PMID: 28877564 PMCID: PMC5647638 DOI: 10.5853/jos.2016.01956] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/26/2017] [Accepted: 03/31/2017] [Indexed: 12/22/2022] Open
Abstract
Intracranial atherosclerosis is one of the leading causes of ischemic stroke and occurs more commonly in patients of Asian, African or Hispanic origin than in Caucasians. Although the histopathology of intracranial atherosclerotic disease resembles extracranial atherosclerosis, there are some notable differences in the onset and severity of atherosclerosis. Current understanding of intracranial atherosclerotic disease has been advanced by the high-resolution magnetic resonance imaging (HRMRI), a novel emerging imaging technique that can directly visualize the vessel wall pathology. However, the pathological validation of HRMRI signal characteristics remains a key step to depict the plaque components and vulnerability in intracranial atherosclerotic lesions. The purpose of this review is to describe the histological features of intracranial atherosclerosis and to state current evidences regarding the validation of MR vessel wall imaging with histopathology.
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Affiliation(s)
- Wen-Jie Yang
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, Hong Kong
| | - Ka-Sing Wong
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, Hong Kong
| | - Xiang-Yan Chen
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Sha Tin, Hong Kong
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Zhang DF, Chen YC, Chen H, Zhang WD, Sun J, Mao CN, Su W, Wang P, Yin X. A High-Resolution MRI Study of Relationship between Remodeling Patterns and Ischemic Stroke in Patients with Atherosclerotic Middle Cerebral Artery Stenosis. Front Aging Neurosci 2017; 9:140. [PMID: 28536522 PMCID: PMC5422497 DOI: 10.3389/fnagi.2017.00140] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 04/26/2017] [Indexed: 11/13/2022] Open
Abstract
Purpose: Recently, high-resolution magnetic resonance imaging (HR-MRI) has been used to depict the wall characteristics of the intracranial arteries. The aim of this study was to explain the relationship between the remodeling patterns and acute ischemic stroke in patients with atherosclerotic middle cerebral artery (MCA) stenosis using HR-MRI. Materials and Methods: From August 2015 to May 2016, we prospectively screened 33 consecutive patients with unilateral MCA stenosis using time-to-flight MR angiography, including 15 patients with symptomatic MCA stenosis and 18 patients with asymptomatic MCA stenosis. Among them, 14 patients were diagnosed as positive remodeling (PR) and 19 as negative remodeling or non-remodeling. The cross-sectional images of the stenotic MCA wall on HR-MRI including T1WI, T2WI, and PDWI were compared between the symptomatic group and the asymptomatic group as well as the PR group and the non-PR group, based on the vessel area, lumen area, wall area, plaque area, degree of stenosis, remodeling index, and NIHSS score. Results: The symptomatic group had larger wall area (P = 0.040), plaque area (P<0.001), degree of stenosis (P = 0.038), remodeling index (P < 0.001), and NIHSS score (P = 0.003) as well as smaller lumen area (P = 0.001) than the asymptomatic group. In addition, more PR patients were observed in symptomatic group. The PR group had larger plaque area (P = 0.014) and NIHSS score (P = 0.037) than the non-PR group. Demographic and clinical characteristics between the symptomatic group and the asymptomatic group, the PR group and the non-PR group showed no statistical difference. Conclusion: The current study suggests that the HR-MRI has emerged as a promising tool to detect the characteristics of intracranial arteries wall and reveal the relationship between remodeling patterns and ischemic stroke. The PR is an unsafe remodeling way and is prone to cause acute ischemic stroke.
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Affiliation(s)
- Dan-Feng Zhang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Yu-Chen Chen
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China.,School of Medicine, Nanjing UniversityNanjing, China
| | - Huiyou Chen
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Wei-Dong Zhang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Jun Sun
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Cun-Nan Mao
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Wen Su
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Peng Wang
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Xindao Yin
- Department of Radiology, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
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Ram R, Kaul S, Alladi S, Afshan JS, Prabha TS, Kohat A, Tandra S, Rani JY. Risk Factors, Vascular Lesion Distribution, Outcome and Recurrence of Strokes Due to Intracranial Atherosclerosis: One Year Data from Hyderabad Stroke Registry. Ann Indian Acad Neurol 2017; 20:387-392. [PMID: 29184342 PMCID: PMC5682743 DOI: 10.4103/aian.aian_227_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background: Intracranial atherosclerotic stenosis (ICAS) is a common cause of ischemic stroke in Asian countries and probably in India. Aim: The aim of this study was to describe the risk factors, distribution of vascular lesions, recurrence and outcome of stroke due to ICAS. Methodology: A total of 100 consecutive patients of ischemic stroke due to ICAS were enrolled prospectively from January 1, 2015, to December 31, 2015, and followed for 1 year for treatment compliance and recurrence. The details about demographics, risk factors, and vascular lesions were noted. Results: There were 68 males and 32 females. Hypertension (HTN), diabetes, alcohol, smoking, hyperlipidemia, and hyperhomocysteinemia was present in 82%, 52%, 34%, 33%, 28%, and 23%, respectively. The number of arteries involved were middle cerebral artery, 53 (37.3%); posterior cerebral artery, 24 (16.9%); internal cerebral artery, 21 (14.8%); vertebral artery, 18 (12.7%); basilar artery, 6 (4.2%); and anterior cerebral artery, 6 (4.2%). Seventeen (17%) patients had a recurrent stroke during 1 year follow-up. The presence of uncontrolled HTN and diabetes mellitus after discharge were significantly associated with stroke recurrence (P < 0.05). The use of dual antiplatelet agents and statins was found to have a significant effect in the prevention of recurrent stroke (P < 0.05). Severe stroke at presentation and presence of hemiparesis were the predictors for unfavorable outcome at 3 months (P < 0.05). Conclusion: Risk factors, distribution of vascular lesions and high recurrence of stroke due to ICAS in this study is similar to that reported from other Asian countries. Aggressive medical management and risk factor control remains the best strategy for preventing recurrence.
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Affiliation(s)
- Raghu Ram
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Subhash Kaul
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Suvarna Alladi
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Jabeen S Afshan
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - T Surya Prabha
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Abhijeet Kohat
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Swetha Tandra
- Department of Neurology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
| | - Jyotsna Y Rani
- Department of Radiology, Nizams Institute of Medical Sciences, Hyderabad, Telangana, India
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van den Wijngaard IR, Holswilder G, van Walderveen MAA, Algra A, Wermer MJH, Zaidat OO, Boiten J. Treatment and imaging of intracranial atherosclerotic stenosis: current perspectives and future directions. Brain Behav 2016; 6:e00536. [PMID: 27843693 PMCID: PMC5102638 DOI: 10.1002/brb3.536] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 05/08/2016] [Accepted: 06/08/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Intracranial atherosclerosis is a common cause of stroke worldwide. It results in ischemic stroke due to different mechanisms including artery-to-artery embolism, in situ thrombo-occlusion, occlusion of perforating arteries, and hemodynamic failure. In this review, we present an overview of current treatment and imaging modalities in intracranial atherosclerotic stenosis. METHODS PubMed was searched for relevant articles in English that evaluated the treatment and imaging of intracranial atherosclerotic stenosis (ICAS). RESULTS Aggressive medical management, consisting of dual antiplatelet therapy and intensive risk factor management, is important in patients with ICAS because of a substantial risk of recurrent stroke, approximately 20% in the first year, in patients on aspirin or warfarin alone. Recent trials have suggested that, aggressive medical therapy results in better outcome as compared with intracranial stenting. However, the question remains what the optimal treatment strategy would be in patients with recurrent strokes in the setting of failed aggressive medical therapy. Moreover, controversy exists whether a subgroup of patients with symptomatic ICAS could benefit from intracranial stenting if selection is based on radiological evidence of hemodynamic failure. With regard to imaging, transcranial Doppler ultrasound and magnetic resonance angiography are useful screening tests for exclusion of ICAS, but need confirmation by other imaging modalities when stenosis is suggested. Computed tomography angiography has a high positive and negative predictive value for detection of intracranial luminal stenosis of 50% or higher, but performs worse than digital subtraction angiography with regard to establishing the exact degree of luminal stenosis. Novel imaging techniques including high-resolution CT and MRI better identify plaque characteristics than conventional imaging methods. CONCLUSIONS Currently, aggressive medical management remains the standard of care for patients with ICAS. Further research is needed to identify high-risk subgroups and to develop more effective treatments for ICAS patients.
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Affiliation(s)
- Ido R. van den Wijngaard
- Department of RadiologyLeiden University Medical CenterLeidenthe Netherlands
- Department of NeurologyMedical Center Haaglandenthe Haguethe Netherlands
| | | | | | - Ale Algra
- Department of Clinical EpidemiologyLeiden University Medical CenterLeidenthe Netherlands
- Department of Neurology and NeurosurgeryBrain Center Rudolf MagnusUniversity Medical Center UtrechtUtrechtthe Netherlands
| | | | - Osama O. Zaidat
- Department of NeurologyMedical College of Wisconsin/Froedtert HospitalMilwaukeeWIUSA
| | - Jelis Boiten
- Department of NeurologyMedical Center Haaglandenthe Haguethe Netherlands
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Lan L, Leng X, Abrigo J, Ip V, Soo YOY, Leung T, Chen X, Wong KS. Cerebral perfusion difference between hemispheres with symptomatic and asymptomatic intracranial arterial stenosis. Int J Stroke 2016; 12:NP19-NP20. [PMID: 27765898 DOI: 10.1177/1747493016676284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Linfang Lan
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Xinyi Leng
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Jill Abrigo
- Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Vincent Ip
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Yannie OY Soo
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Thomas Leung
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Xiangyan Chen
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Ka Sing Wong
- Division of Neurology, Department of Medicine and Therapeutics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
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Al Said Y, Kurdi K, Baeesa SS, Najjar A, Almekhlafi M, Hassan A. Outcome of intracranial arterial stenting of symptomatic atherosclerotic disease: A single center experience from Saudi Arabia. NEUROSCIENCES (RIYADH, SAUDI ARABIA) 2016; 21:366-371. [PMID: 27744470 PMCID: PMC5224437 DOI: 10.17712/nsj.2016.4.20160199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To present our local experience with intracranial angioplasty and stenting used for the treatment of symptomatic intracranial stenosis to assess its safety, efficacy, and outcome. METHODS This is a retrospective review of all the patients with symptomatic intracranial atherosclerotic disease who underwent endovascular treatment in King Faisal Specialist Hospital and research center, Jeddah, Kingdom of Saudi Arabia from January 2003 to December 2014. Clinical, procedural, and outcome variables were gathered. RESULTS We identified 22 patients who were referred for stenting of symptomatic intracranial atherosclerotic stenosis. In all but 3, the stents were deployed successfully (86% procedural success rate). The procedure was carried out under conscious sedation in 32%. Excellent flow was restored immediately in all successfully-stented cases. Post procedural strokes occurred in 4 patients (17.4%). One non-neurological death was identified in a patient who suffered a major post procedural stroke (4.3%). CONCLUSION Intracranial atherosclerotic disease is not uncommon in our population. Angioplasty and stenting might be a valid option for the treatment of patients with recurrent symptoms despite optimal medical treatment.
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Affiliation(s)
- Youssef Al Said
- Department of Neurosciences, King Faisal Specialist Hospital and Research Center, Jeddah, Kingdom of Saudi Arabia
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Plasma thrombin-cleaved osteopontin as a potential biomarker of acute atherothrombotic ischemic stroke. Hypertens Res 2016; 40:61-66. [PMID: 27558929 DOI: 10.1038/hr.2016.110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/17/2016] [Accepted: 07/13/2016] [Indexed: 12/28/2022]
Abstract
We investigated whether thrombin-cleaved osteopontin N-terminal is useful as a blood biomarker of acute atherothrombotic ischemic stroke. Acute ischemic stroke patients were prospectively evaluated with brain magnetic resonance imaging and cardiac evaluations for etiological diagnosis according to the Trial of Org 10172 in Acute Stroke Treatment classification. They were divided into the atherothrombotic and non-atherothrombotic groups. Thrombin-cleaved osteopontin N-terminal, osteopontin, matrix metalloproteinase-9, S100B, C-reactive protein and D-dimer levels were measured from blood samples collected at admission. After excluding patients who met the exclusion criteria or had stroke of other/undetermined etiology, 60 of the 100 patients initially enrolled were included in the final analysis. The ischemic stroke subtypes were atherothrombotic (n=28, 46.7%), cardioembolic (n=19, 31.7%) and lacunar (n=13, 21.7%). Thrombin-cleaved osteopontin N-terminal and matrix metalloproteinase-9 levels were significantly higher in the atherothrombotic than in the non-atherothrombotic group (median (interquartile range): 5.83 (0.0-8.6 ) vs. 0.0 (0.0-3.3) pmol l-1, P=0.03 and 544 (322-749 ) vs. 343 (254-485) ng ml-1, P=0.01, respectively). After adjustment for the prevalence of hypertension, diabetes and dyslipidemia, thrombin-cleaved osteopontin N-terminal levels of >5.47 pmol l-1 (odds ratio, 16.81; 95% confidence interval, 3.53-80.10) and matrix metalloproteinase-9 levels of >605.5 ng ml-1 (6.59; 1.77-24.60) were identified as independent predictors of atherothrombosis. Within 3 h from stroke onset, only thrombin-cleaved osteopontin N-terminal independently predicted atherothrombosis and thus may add valuable, time-sensitive diagnostic information in the early evaluation of ischemic stroke, especially the atherothrombotic subtype.
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Leng X, Wong KS, Leung TW. The contemporary management of intracranial atherosclerotic disease. Expert Rev Neurother 2016; 16:701-9. [PMID: 27082149 DOI: 10.1080/14737175.2016.1179111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Intracranial atherosclerotic disease is the most common cause of cerebral vasculopathy and an important stroke etiology worldwide, with a higher prevalence in Asian, Hispanic and African ethnicities. Symptomatic intracranial atherosclerotic disease portends a recurrent stroke risk as high as 18% at one year. The key to secondary prevention is an understanding of the underlying stroke mechanism and aggressive control of conventional cardiovascular risks. Contemporary treatment includes antiplatelet therapy, optimal glycemic and blood pressure control, statin therapy and lifestyle modifications. For patients with high-grade (70-99%) symptomatic steno-occlusion, short-term dual antiplatelet therapy with aspirin and clopidogrel followed by life-long single antiplatelet therapy may reduce the recurrent risk. Current evidence does not advocate percutaneous transluminal angioplasty and stenting as an initial treatment. External counterpulsation, encephaloduroarteriosynangiosis and remote limb ischemic preconditioning are treatments under investigation. Future studies should aim at predicting patients prone to recurrence despite of medical therapies and testing the efficacy of emerging therapies.
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Affiliation(s)
- Xinyi Leng
- a Department of Medicine & Therapeutics , The Chinese University of Hong Kong , Hong Kong SAR , China
| | - Ka Sing Wong
- a Department of Medicine & Therapeutics , The Chinese University of Hong Kong , Hong Kong SAR , China
| | - Thomas W Leung
- a Department of Medicine & Therapeutics , The Chinese University of Hong Kong , Hong Kong SAR , China
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Liu L, Wong KSL, Leng X, Pu Y, Wang Y, Jing J, Zou X, Pan Y, Wang A, Meng X, Wang C, Zhao X, Soo Y, Johnston SC, Wang Y. Dual antiplatelet therapy in stroke and ICAS: Subgroup analysis of CHANCE. Neurology 2016; 85:1154-62. [PMID: 26330567 DOI: 10.1212/wnl.0000000000001972] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 06/03/2015] [Indexed: 01/17/2023] Open
Abstract
UNLABELLED AB OBJECTIVE: We aimed to investigate whether the efficacy and safety of clopidogrel plus aspirin vs aspirin alone were consistent between patients with and without intracranial arterial stenosis (ICAS), in the Clopidogrel in High-Risk Patients with Acute Non-disabling Cerebrovascular Events (CHANCE) trial. METHODS We assessed the interaction of the treatment effects of the 2 antiplatelet therapies among patients with and without ICAS, identified by magnetic resonance angiography (MRA) in CHANCE (ClinicalTrials.gov identifier NCT00979589). RESULTS Overall, 1,089 patients with MRA images available in CHANCE were included in this subanalysis, 608 patients (55.8%) with ICAS and 481 (44.2%) without. Patients with ICAS had higher rates of recurrent stroke (12.5% vs 5.4%; p<0.0001) at 90 days than those without. But there was no statistically significant treatment by presence of ICAS interaction on either the primary outcome of any stroke (hazard ratio for clopidogrel plus aspirin vs aspirin alone: 0.79 [0.47-1.32] vs 1.12 [0.56-2.25]; interaction p=0.522) or the safety outcome of any bleeding event (interaction p=0.277). CONCLUSIONS The results indicated higher rate of recurrent stroke in minor stroke or high-risk TIA patients with ICAS than in those without. However, there was no significant difference in the response to the 2 antiplatelet therapies between patients with and without ICAS in the CHANCE trial. Classification of evidence: This study provides Class II evidence that for patients with acute minor stroke or TIA with and without ICAS identified by MRA, clopidogrel plus aspirin is not significantly different than aspirin alone in preventing recurrent stroke.
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Lee KY, Chen DYT, Hsu HL, Chen CJ, Tseng YC. Undersized angioplasty and stenting of symptomatic intracranial tight stenosis with Enterprise: Evaluation of clinical and vascular outcome. Interv Neuroradiol 2015; 22:187-95. [PMID: 26542728 DOI: 10.1177/1591019915609165] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/03/2015] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Severe intracranial arterial stenosis results in more than 10% incidence of stroke and transient ischemic attack. Using undersized angioplasty with off-label closed-cell Enterprise stent may be a feasible alternative option for treating patients with intracranial atherosclerotic disease who fail dual-antiplatelet medical therapy. The results of the authors' study are presented in this paper. MATERIALS AND METHODS Between January 2013 and July 2014, 24 symptomatic patients with a total of 30 intracranial arterial stenotic lesions refractory to medical therapy, who underwent undersized angioplasty and Enterprise stenting, were retrospectively reviewed in the authors' institution. The results evaluated include technical success rate, clinical outcome measured as modified Rankin Scale at presentation and follow-up, peri-procedural morbidity within 30 days and 1 year, and follow-up vessel patency. RESULTS Stent deployment was successfully achieved in all stenotic lesions (30/30). Mean pre-stent and post-stent diameter residual stenosis was 81% and 18%, respectively. The peri-procedural complication rate during 30 days after stenting was 10% per lesion (3/30), including intracranial hemorrhage, in-stent thrombosis and ischemic stroke. No further thromboembolic event or complication occurred in any patient more than 30 days after stenting. Modified Rankin scale ≤ 2 was observed in 64% and 83% of patients at initial presentation and follow-up (mean 15.8 months), respectively. Imaging follow-up was available in 17 of 24 patients (70.8%) and 20 of 30 treated lesions (66.6%) with a mean follow-up period of 15.4 months. Only one asymptomatic in-stent restenosis occurred in 20 available lesions (5.0%). CONCLUSION This preliminary study suggests that using undersized angioplasty and Enterprise stenting may effectively treat high-degree symptomatic intracranial arterial stenosis with favorable clinical and angiographic outcome.
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Affiliation(s)
- Kun-Yu Lee
- Department of Radiology, Shuang Ho Hospital, Taipei Medical University, Taiwan Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - David Yen-Ting Chen
- Department of Radiology, Shuang Ho Hospital, Taipei Medical University, Taiwan Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - Hui-Ling Hsu
- Department of Radiology, Shuang Ho Hospital, Taipei Medical University, Taiwan Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - Chi-Jen Chen
- Department of Radiology, Shuang Ho Hospital, Taipei Medical University, Taiwan Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - Ying-Chi Tseng
- Department of Radiology, Shuang Ho Hospital, Taipei Medical University, Taiwan Department of Radiology, School of Medicine, College of Medicine, Taipei Medical University, Taiwan
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Leng X, Scalzo F, Fong AK, Johnson M, Ip HL, Soo Y, Leung T, Liu L, Feldmann E, Wong KS, Liebeskind DS. Computational fluid dynamics of computed tomography angiography to detect the hemodynamic impact of intracranial atherosclerotic stenosis. ACTA ACUST UNITED AC 2015. [DOI: 10.1186/s40809-014-0001-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Xie D, Deng L, Liu XD, Li JM, Zhang YB. Role of high sensitivity C-reactive protein and other risk factors in intracranial and extracranial artery occlusion in patients with ischaemic stroke. J Int Med Res 2015; 43:711-7. [PMID: 26130785 DOI: 10.1177/0300060515586246] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 03/19/2015] [Indexed: 11/15/2022] Open
Abstract
Objective A retrospective case–control study to identify stroke-associated risk factors and quantify serum C-reactive protein in patients with ischaemic stroke, with or without intracranial and/or extracranial artery occlusion (IEAO). Methods Patients with ischaemic stroke and internal carotid artery occlusion (ICAO), middle cerebral artery occlusion (MCAO), ICAO + MCAO, or no IEAO (control patients) were retrospectively recruited. Data regarding stroke-associated risk factors were retrieved from medical records. High sensitivity (hs)-CRP was quantified within 3 days of hospital admission. Results Patients with ICAO ( n = 89), MCAO ( n = 74) and ICAO + MCAO ( n = 29) had significantly higher serum hs-CRP concentrations, and were significantly more likely to have coronary heart disease, a history of stroke, and more than three stroke-associated risk factors than control patients ( n = 84). Conclusions Coronary heart disease and a history of stroke are risk factors for ischaemic stroke with IEAO. Hs-CRP may be used as a marker for IEAO.
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Affiliation(s)
- Dan Xie
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Li Deng
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiao-dong Liu
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Ji-mei Li
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yong-bo Zhang
- Department of Neurology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Ryu WS, Park SS, Kim YS, Lee SH, Kang K, Kim C, Sohn CH, Lee SH, Yoon BW. Long-term natural history of intracranial arterial stenosis: an MRA follow-up study. Cerebrovasc Dis 2014; 38:290-6. [PMID: 25412772 DOI: 10.1159/000367587] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 08/11/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Intracranial arterial stenosis (ICAS) is a major cause of ischemic stroke in Asians. Despite the clinical importance of ICAS, the literature on the natural history of ICAS has been less enlightening. The aims of our study were to evaluate a long-term natural course of symptomatic and asymptomatic ICAS. METHODS 102 subjects (37 symptomatic and 65 asymptomatic) underwent follow-up MR angiography (MRA) with a median time interval between initial and follow-up MRA of 5.7 years (range 3.6-8.5 years). For each patient, the extent of stenosis of five arteries (both middle cerebral arteries, both intracranial internal carotid arteries, and basilar artery) was classified according to five grades, by consensus: normal, mild (signal reduction <50%), moderate (signal reduction ≥50%), severe (focal signal loss with the presence of a distal signal), and occlusion. Because the sample size was too small to adjust for multiple confounders, we applied the propensity score. RESULTS Mean (Standard deviation) age at initial MRA was 63.5 (9.6) and 54% were men. The progression rate of ICAS differed significantly between symptomatic and asymptomatic patients (22 vs. 8%, p < 0.01), indicating a 3-fold risk of progression for symptomatic stenosis compared with asymptomatic stenosis [odds ratio (OR) 3.27, 95% confidence interval (CI) 1.08-9.95]. After adjustment for propensity score, the OR was 4.84 (95% CI, 1.40-16.7). In the matched cohort, the relative risk of stenosis progression was 5.20 for symptomatic stenosis (95% CI 1.00-27.23) compared with asymptomatic stenosis. CONCLUSION We found a greater risk of progression for symptomatic stenosis compared with asymptomatic stenosis.
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Affiliation(s)
- Wi-Sun Ryu
- Department of Neurology, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
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Park KY, Kim BM, Kim DJ, Kim DI, Heo JH, Nam HS, Kim YD, Song D. Incidence and risk factors for diffusion-weighted imaging (+) lesions after intracranial stenting and its relationship with symptomatic ischemic complications. Stroke 2014; 45:3298-303. [PMID: 25300970 DOI: 10.1161/strokeaha.114.006182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Little is known about high-signal lesions in magnetic resonance diffusion-weighted imaging (DWI [+]) after stenting for intracranial atherosclerotic stenosis. This study aimed to evaluate the incidence, distribution, risk factors, and clinical implications of DWI (+) after intracranial stenting. METHODS A total of 123 patients (male:female=88:35, mean age, 64.1 years) with symptomatic intracranial atherosclerotic stenosis (mean stenosis, 76.1±7.7%) underwent both stenting and poststenting DWI. The incidence, distribution (embolic-alone versus stenosis-associated perforator/mixed), and risk factors of DWI (+) and its relationship with symptomatic ischemic complications (SIC, including stroke or transient ischemic attack) were retrospectively evaluated. RESULTS Forty-three patients (35.0%) had DWI (+). Middle cerebral artery, smaller distal parent artery, and treatment-related dissection were independent risk factors for DWI (+) (P<0.05). SIC occurred in 4 patients (3.3%), all of whom had DWI (+). Of the patients with DWI (+), neither the number nor the volume of DWI (+) differed significantly between SIC and asymptomatic patients: median number/patient, 3.5 (range, 2-11) versus 2.0 (range, 1-11) and median volume/patient, 329.8 mm(3) (range, 76-883.5 mm(3)) versus 119.5 mm(3) (range, 32.5-873.0 mm(3)). However, SIC occurred more frequently in the stenosis-associated perforator/mixed type (3/11, 27.3%) than in the embolic-alone type (1/32, 3.1%; P<0.05). CONCLUSIONS The incidence of DWI (+) after intracranial stenting for intracranial atherosclerotic stenosis was 35.0%. Middle cerebral artery, smaller distal parent artery, and treatment-related dissection were independent risk factors for DWI (+). SIC occurred more frequently in the stenosis-associated perforator/mixed type than in the embolic-alone type.
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Affiliation(s)
- Keun Young Park
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Byung Moon Kim
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea.
| | - Dong Joon Kim
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Dong Ik Kim
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji Hoe Heo
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyo Suk Nam
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Young Dae Kim
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Dongbeom Song
- From the Departments of Neurosurgery (K.Y.P.), Radiology (B.M.K., D.J.K., D.I.K.), and Neurology (J.H.H., H.S.N., Y.D.K., D.S.), Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
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Chaturvedi S, Bhattacharya P. Large artery atherosclerosis: carotid stenosis, vertebral artery disease, and intracranial atherosclerosis. Continuum (Minneap Minn) 2014; 20:323-34. [PMID: 24699484 PMCID: PMC10564048 DOI: 10.1212/01.con.0000446104.90043.a5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE OF REVIEW Large artery atherosclerosis is an important cause of ischemic stroke. Recent randomized clinical trials have helped clarify the treatment options for conditions such as carotid stenosis and intracranial atherosclerosis. This review outlines the primary findings of these trials and provides current recommendations for treatment. RECENT FINDINGS Carotid revascularization is preferred in patients with severe symptomatic carotid stenosis. Carotid endarterectomy achieves lower rates of stroke or death than carotid artery stenting. The risk of stroke or death with stenting is higher among older patients and women. Intensive medical therapy achieves low stroke and death rates in asymptomatic stenosis. Medical therapy and treatment of atherosclerotic risk factors are the mainstay of therapy for intracranial atherosclerosis, and medical therapy is recommended for patients with vertebral artery origin atherosclerosis. SUMMARY Contemporary medical therapy is paramount in large artery atherosclerosis. Patient demographics, comorbidities, and the periprocedural risks of stroke and death should be carefully weighed while choosing a revascularization procedure for carotid stenosis.
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Bang OY. Intracranial atherosclerosis: current understanding and perspectives. J Stroke 2014; 16:27-35. [PMID: 24741562 PMCID: PMC3961814 DOI: 10.5853/jos.2014.16.1.27] [Citation(s) in RCA: 153] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 10/12/2013] [Accepted: 10/14/2013] [Indexed: 01/08/2023] Open
Abstract
The importance of intracranial atherosclerotic disease (ICAD) as a cause of stroke is underscored as compared to that of extracranial carotid stenosis and nonvalvular atrial fibrillation. Recent large clinical trials of ICAD, which evaluated the effectiveness of anticoagulation and stenting to prevent thromboembolism and restore hemodynamic compromise, failed to reduce major vascular events in patients with ICAD. These trials showed the importance of optimal control of risk factors to reduce major vascular events in these patients. Recent advances in risk factors for ICAD are summarized, together with possible reasons for race-ethnic differences in the prevalence of ICAD. In addition, the failure of the major clinical trials of ICAD may be caused by limitations in the understanding of ICAD. Unlike in patients with extracranial carotid stenosis or atrial fibrillation, stroke associated with ICAD occurs in association with various stroke mechanisms such as in situ thrombotic occlusion, artery-to-artery embolism, hemodynamic insufficiency, and branch occlusion. In clinical trials of ICAD, patients with all these types of ICAD were included. However, treatment effects may differ among the different types of ICAD. Treatment strategies might be selected based on clinical features (including the time after onset) and serologic and neuroimaging biomarkers (including diffusion-weighted image pattern and plaque images). Additional clinical trials considering these features are needed.
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Affiliation(s)
- Oh Young Bang
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Jeng JS, Tang SC, Liu HM. Epidemiology, diagnosis and management of intracranial atherosclerotic disease. Expert Rev Cardiovasc Ther 2014; 8:1423-32. [DOI: 10.1586/erc.10.129] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Leng X, Wong KS, Liebeskind DS. Evaluating intracranial atherosclerosis rather than intracranial stenosis. Stroke 2014; 45:645-51. [PMID: 24399377 DOI: 10.1161/strokeaha.113.002491] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xinyi Leng
- From the Department of Medicine and Therapeutics, Chinese University of Hong Kong, Hong Kong SAR, China (X.L., K.S.W.); and UCLA Stroke Center, Los Angeles, CA (D.S.L.)
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Mansour O, Schumacher M, Farrag MA, Abd-Allah F. Intracranial Atherosclerosis: The Natural History and Management Strategies. WORLD JOURNAL OF CARDIOVASCULAR DISEASES 2014; 04:350-360. [DOI: 10.4236/wjcd.2014.47044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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