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Xu X, Xiao C, Yi M, Yang J, Liao M, Zhou K, Hu L, Ouyang F, Lan L, Fan Y. Cerebral Perfusion Characteristics and Dynamic Brain Structural Changes in Stroke-Prone Renovascular Hypertensive Rats: A Preclinical Model for Cerebral Small Vessel Disease. Transl Stroke Res 2024:10.1007/s12975-024-01239-8. [PMID: 38443727 DOI: 10.1007/s12975-024-01239-8] [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: 12/15/2023] [Revised: 02/08/2024] [Accepted: 02/29/2024] [Indexed: 03/07/2024]
Abstract
Hypertension is a leading cause of cerebral small vessel disease (CSVD) and vascular dementia in elderly individuals. We aimed to assess cerebral perfusion and dynamic changes in brain structure in stroke-prone renovascular hypertensive rats (RHRSPs) with different durations of hypertension and to investigate whether they have pathophysiological features similar to those of humans with CSVD. The RHRSP model was established using the two-kidney, two-clip (2k2c) method, and the Morris water maze (MWM) test, MRI, immunohistochemistry, and biochemical analysis were performed at multiple time points for up to six months following the 2k2c operation. Systolic blood pressure was significantly greater in the RHRSP group than in the sham-operated group at week 4 post-surgery and continued to increase over time, leading to cognitive decline by week 20. Arterial spin labeling revealed cerebral hypoperfusion in the RHRSP group at 8 weeks, accompanied by vascular remodeling and decreased vessel density. Diffusion tensor imaging and Luxol fast blue staining indicated that white matter disintegration and demyelination gradually progressed in the corpus callosum and that myelin basic protein levels decreased. Eight weeks after surgery, blood-brain barrier (BBB) leakage into the corpus callosum was observed. The albumin leakage area was negatively correlated with the myelin sheath area (r=-0.88, p<0.001). RNA-seq analysis revealed downregulation of most angiogenic genes and upregulation of antiangiogenic genes in the corpus callosum of RHRSPs 24 weeks after surgery. RHRSPs developed cerebral hypoperfusion, BBB disruption, spontaneous white matter damage, and cognitive impairment as the duration of hypertension increased. RHRSPs share behavioral and neuropathological characteristics with CSVD patients, making them suitable animal models for preclinical trials related to CSVD.
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Affiliation(s)
- Xiangming Xu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Chi Xiao
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Ming Yi
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Jing Yang
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Mengshi Liao
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Kun Zhou
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Liuting Hu
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Fubing Ouyang
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Linfang Lan
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China
| | - Yuhua Fan
- Department of Neurology, The First Affiliated Hospital, Sun Yat-sen University; Guangdong Provincial Key Laboratory of Diagnosis and Treatment of Major Neurological Diseases; National Key Clinical Department and Key Discipline of Neurology, No.58 Zhongshan Road 2, Guangzhou, 510080, China.
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Keller JA, Sigurdsson S, Klaassen K, Hirschler L, van Buchem MA, Launer LJ, van Osch MJ, Gudnason V, de Bresser J. White matter hyperintensity shape is associated with long-term dementia risk. Alzheimers Dement 2023; 19:5632-5641. [PMID: 37303267 PMCID: PMC10713858 DOI: 10.1002/alz.13345] [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: 11/17/2022] [Revised: 04/11/2023] [Accepted: 05/05/2023] [Indexed: 06/13/2023]
Abstract
INTRODUCTION We aimed to investigate the association between white matter hyperintensity (WMH) shape and volume and the long-term dementia risk in community-dwelling older adults. METHODS Three thousand seventy-seven participants (mean age: 75.6 ± 5.2 years) of the Age Gene/Environment Susceptibility (AGES)-Reykjavik study underwent baseline 1.5T brain magnetic resonance imaging and were followed up for dementia (mean follow-up: 9.9 ± 2.6 years). RESULTS More irregular shape of periventricular/confluent WMH (lower solidity (hazard ratio (95% confidence interval) 1.34 (1.17 to 1.52), p < .001) and convexity 1.38 (1.28 to 1.49), p < .001); higher concavity index 1.43 (1.32 to 1.54), p < .001) and fractal dimension 1.45 (1.32 to 1.58), p < .001)), higher total WMH volume (1.68 (1.54 to 1.87), p < .001), higher periventricular/confluent WMH volume (1.71 (1.55 to 1.89), p < .001), and higher deep WMH volume (1.17 (1.08 to 1.27), p < .001) were associated with an increased long-term dementia risk. DISCUSSION WMH shape markers may in the future be useful in determining patient prognosis and may aid in patient selection for future preventive treatments in community-dwelling older adults.
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Affiliation(s)
- Jasmin A. Keller
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | | | - Kelly Klaassen
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Lydiane Hirschler
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Mark A. van Buchem
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Lenore J. Launer
- Laboratory of Epidemiology and Population Science, National Institute on Aging, Bethesda, MD 20898, United States
| | - Matthias J.P. van Osch
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Vilmundur Gudnason
- Icelandic Heart Association, 201 Kopavogur, Iceland
- Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
| | - Jeroen de Bresser
- Department of Radiology, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
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Delgardo M, Rabin G, Tudor T, Tang AJ, Reeves G, Connolly ES. Monitoring risk and preventing ischemic stroke in the very old. Expert Rev Neurother 2023; 23:791-801. [PMID: 37540092 DOI: 10.1080/14737175.2023.2244674] [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: 04/29/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/05/2023]
Abstract
INTRODUCTION Stroke is a significant cause of death, and the leading cause of severe long-term disability for individuals over 80 (the very old), yet few studies of such risk factors for ischemic stroke, or the known mitigation techniques, in this population, and the evidence base regarding risk modification strategies in this susceptible population can be inconsistent and incomplete. This article examines current guidelines and evidence regarding medical management, lifestyle changes, and psychosocial interactions that can contribute to the primary and secondary prevention of ischemic stroke in the very old. AREAS COVERED The authors conducted a literature search for ischemic stroke prevention and risk assessment in the elderly via PubMed. Furthermore, they describe current strategies for monitoring risk and preventing ischemic stroke in the elderly population. EXPERT OPINION Ischemic stroke poses a significant health risk to the elderly, with prevention relying on managing modifiable risk factors such as hypertension, atrial fibrillation, diabetes, and high cholesterol, as well as promoting healthy lifestyle choices like quitting smoking, regular physical activity and a heart-healthy diet. Healthcare providers must adopt a multifaceted approach, addressing individual and population-level factors while remaining vigilant in monitoring and managing risk factors to reduce the incidence and impact of stroke in older adults.
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Affiliation(s)
- Mychael Delgardo
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - Grant Rabin
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - Thilan Tudor
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - Anthony J Tang
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - Geoffrey Reeves
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
| | - E Sander Connolly
- Department of Neurological Surgery, Columbia University Medical Center, New York, NY, USA
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Tang ECH, Lau AYL, AU D, Ju Y, Lam BYK, Wong A, Au L, Mok VCT. Effects of Acupuncture upon cerebral hemodynamics in cerebral small vessel disease: A pilot study. CEREBRAL CIRCULATION - COGNITION AND BEHAVIOR 2023; 4:100168. [PMID: 37397268 PMCID: PMC10313857 DOI: 10.1016/j.cccb.2023.100168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 02/20/2023] [Accepted: 05/09/2023] [Indexed: 07/04/2023]
Abstract
Background and aims Recent preclinical studies and meta-analysis of clinical trials suggested that acupuncture may improve cognition in cerebral small vessel disease (CSVD). We investigated the cerebral hemodynamics of acupuncture in subjects with CSVD and compared its impact upon the cerebral hemodynamics in normal elderly subjects. Methods 10 subjects with CSVD (CSVD group) and 10 aged-matched control subjects who had no or insignificant CSVD (control group) were recruited. A single session of acupuncture was applied for 30 min in both groups. We assessed the effect of our acupuncture intervention on cerebral hemodynamics by transcranial Doppler ultrasound (TCD). Peak systolic velocity (PSV) and pulsatility index (PI) of the middle cerebral artery (MCA) were assessed. Results We observed that PSV increased by a maximum of 39% at 20 min (p<0.05), while there was no significant change in PI in the CSVD group during the acupuncture session. In the control group, although we observed no significant change in PSV during the acupuncture session, there was a significant decrease in PI by a maximum of 22% at 20 min (p<0.05). No adverse events were reported during or after the procedure. Conclusion This study suggested that our acupuncture prescription was associated with an increase in cerebral blood flow in subjects with established moderate to severe CSVD yet without apparent impact on distal vascular resistance. While, in subjects with no or insignificant CSVD, it may reduce cerebral small vessel distal vascular resistance. A larger study is needed to confirm our findings.
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Affiliation(s)
- Endy-Chun-hung Tang
- Lau Tat-chuen Research Centre of Brain Degenerative Diseases in Chinese, Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Institute, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Alexander-Yuk-lun Lau
- Lau Tat-chuen Research Centre of Brain Degenerative Diseases in Chinese, Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Institute, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
- The Hong Kong Institute of Integrative Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Flat 4L, 4/F, Day Treatment Block, Shatin, Hong Kong SAR, China
| | - David AU
- The Hong Kong Institute of Integrative Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Flat 4L, 4/F, Day Treatment Block, Shatin, Hong Kong SAR, China
| | - Yanli Ju
- The Hong Kong Institute of Integrative Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Flat 4L, 4/F, Day Treatment Block, Shatin, Hong Kong SAR, China
| | - Bonnie-Yin-Ka Lam
- Lau Tat-chuen Research Centre of Brain Degenerative Diseases in Chinese, Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Institute, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
- The Hong Kong Institute of Integrative Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Flat 4L, 4/F, Day Treatment Block, Shatin, Hong Kong SAR, China
| | - Adrian Wong
- Lau Tat-chuen Research Centre of Brain Degenerative Diseases in Chinese, Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Institute, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Lisa Au
- Lau Tat-chuen Research Centre of Brain Degenerative Diseases in Chinese, Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Institute, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
| | - Vincent-Chung-tong Mok
- Lau Tat-chuen Research Centre of Brain Degenerative Diseases in Chinese, Margaret K.L. Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia, Gerald Choa Neuroscience Institute, Lui Che Woo Institute of Innovative Medicine, Li Ka Shing Institute of Health Sciences, Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
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Yin F, He QD, Chen J, Gui TJ, Cai RJ, Wang Y, Xue QX, Li LY, Tian XK, Wang T, Zhe XW. Benign prostatic hyperplasia associated with white matter hyperintensities in men. Clin Neurol Neurosurg 2023; 229:107738. [PMID: 37116223 DOI: 10.1016/j.clineuro.2023.107738] [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: 03/06/2023] [Revised: 04/18/2023] [Accepted: 04/20/2023] [Indexed: 04/30/2023]
Abstract
PURPOSE Benign prostatic hyperplasia (BPH) describes common noncancerous prostate enlargement. BPH is usually associated with lower urinary tract symptoms and an increased risk of cerebrovascular diseases, such as stroke and its recurrence. White matter hyperintensities (WMHs), markers of cerebral injury, increase the risk of stroke, cognitive impairment, dementia, and death. The relationship between BPH and WMHs remains unclear. This study aimed to determine the association between BPH and WMHs. METHODS A total of 788 male patients from the First Affiliated Hospital of Kunming Medical University from July 2019 to September 2021 were enrolled in this cross-sectional study. BPH was assessed by abdominal ultrasound, and three independent neuroradiologists rated the presence or absence of WMHs. Multiple imputations of chained equations were used to handle missing data. Logistic regression was used to assess the relationship between BPH and WMHs. RESULTS Patients with BPH presented an increased risk of WMHs with a crude odds ratio (OR) of 2.76 (95% CI, 2.02-3.79) and an adjusted OR of 1.75 (95% CI, 1.24-2.48) after controlling for potential confounding factors in the multivariate logistic regression. CONCLUSION We found that BPH was closely associated with WMHs in male Chinese individuals.
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Affiliation(s)
- Fang Yin
- Division of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Qi-Da He
- Department of Epidemiology and Biostatistics, School of Public Health, Medical College of Soochow University, Suzhou, Jiangsu Province, PR China
| | - Jing Chen
- Department of Pathophysiology, School of Basic Medicine, Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Teng-Juan Gui
- Division of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Ren-Jiao Cai
- Division of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Yue Wang
- Division of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Qiu-Xia Xue
- Division of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Li-Yun Li
- Information Centre, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China
| | - Xin-Kui Tian
- Division of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Tao Wang
- Division of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Xing-Wei Zhe
- Division of Nephrology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China.
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Antiplatelet therapy for secondary prevention of lacunar stroke: a systematic review and network meta-analysis. Eur J Clin Pharmacol 2023; 79:63-70. [PMID: 36342528 DOI: 10.1007/s00228-022-03413-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/29/2022] [Indexed: 11/09/2022]
Abstract
PURPOSE To comprehensively compare the efficacy of different antiplatelet therapies for secondary prevention of lacunar stroke (LS). METHODS The relevant studies were identified by searching PubMed, EMBASE, Web of Science, and Cochrane Collaboration Database up to May 2022. Cardiovascular and cerebrovascular events were chosen to evaluate the efficacy of antiplatelet therapy for secondary prevention. Loop-specific approach and node-splitting analysis were used to evaluate consistency and inconsistency, respectively. The value of the surface under the cumulative ranking (SUCRA) was calculated and ranked. Funnel-plot symmetry was used to evaluate publication bias. The meta-analysis was performed by using STATA 16.0. RESULTS Thirteen studies with a total of 33,011 subjects were included in this network meta-analysis. Compared with placebo, aspirin, clopidogrel, cilostazol, ticlopidine, aspirin plus dipyridamole, and aspirin plus clopidogrel were associated with reducing cardiovascular and cerebrovascular events. The SUCRA estimated relative ranking of treatments showed that cilostazol may be the most effective (RR 0.56, 95% CI 0.42-0.74, SUCRA 95.8). No significant inconsistency or publication bias was found in the study. CONCLUSIONS This meta-analysis suggests that cilostazol may be a priority option for secondary prevention of patients with LS. These findings still need further study in the future.
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Fischer C, Schaub S, Büttner K, Hartmann K, Schmidt MJ. Dilated perivascular spaces can present incidental CSF-isointense foci within the ventral forebrain of dogs and cats in transverse MR images. Front Vet Sci 2022; 9:1002836. [PMID: 36299637 PMCID: PMC9590410 DOI: 10.3389/fvets.2022.1002836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/23/2022] [Indexed: 11/04/2022] Open
Abstract
Objective Virchow-Robin-Spaces (VRS) are cerebrospinal fluid (CSF)-containing perivascular spaces encompassing brain vessels while coursing through the parenchyma. VRS can enlarge and become visible in magnetic resonance imaging (MRI). While dilatated VRS are mostly incidental findings, they were associated with degenerative brain disease in humans. This study aimed to evaluate their occurrence and MRI morphology within the ventral forebrain of structurally normal canine and feline brains and physiological cerebrospinal fluid analysis. Sample Retro- and prospective, observational study reviewing medical records of client-owned dogs and cats which underwent MRI brain scans for unrelated reasons between 2011 and 2021. We comprised studies with various magnetic field strengths (1 Tesla/3 Tesla). Out of 2500 brain scans, three hundred thirty-five patients (293 dogs, 42 cats) presented with absent intracranial pathology and physiological CSF analysis and were included. Procedure The ventral forebrain of the included animals was assessed for bi- or unilateral CSF-isointense foci in the transverse plane. Statistical correlations were evaluated between dilated VRS presence, field strength, age, gender, weight, and cranium conformation. Additionally, a post-mortem histopathologic analysis of one dog and one cat showing dilated VRS on MRI was performed to confirm perforating arteries in the gray matter of the ventral forebrain. Results 57% of patients presented dilated VRS (N = 191: 170 dogs, 21 cats). 43% did not display dilated VRS (control group; N = 144: 123 dogs, 21 cats). A significant relation between increased magnetic field strength and detection of dilated VRS was observed in dogs; there was a 2.4 increase (p = 0.0001) in detection using 3 Tesla vs. 1 Tesla. There was a 2.4-fold increase in dilated VRS occurrence in male dogs compared to female dogs. Detection also increased with the rise of body weight. We detected no statistically significant difference between dilated VRS and the control group in age, species or cranium conformation. Conclusion and Clinical Relevance Dilated VRS can be seen within the ventral forebrain at the level of the rostral commissure on transverse MR images as symmetrical or unilateral, dot-like, CSF-isointense areas. Understanding their signal intensity features and localization prevents misinterpretation and helps differentiate them from various pathological conditions.
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Affiliation(s)
- Carolin Fischer
- Department of Veterinary Clinical Sciences, Clinic for Small Animals, Surgery, Justus-Liebig-University Giessen, Giessen, Germany,*Correspondence: Carolin Fischer
| | - Sebastian Schaub
- Department of Veterinary Clinical Sciences, Clinic for Small Animals, Surgery, Justus-Liebig-University Giessen, Giessen, Germany
| | - Kathrin Büttner
- Department for Biomathematics and Data Processing, Justus-Liebig-University Giessen, Giessen, Germany
| | | | - Martin Jürgen Schmidt
- Department of Veterinary Clinical Sciences, Clinic for Small Animals, Neurosurgery, Neuroradiology and Clinical Neurology, Justus-Liebig-University Giessen, Giessen, Germany
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Factors associated with two different stroke mechanisms in perforator infarctions regarding the shape of arteries. Sci Rep 2022; 12:16752. [PMID: 36202949 PMCID: PMC9537294 DOI: 10.1038/s41598-022-21329-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 09/26/2022] [Indexed: 11/08/2022] Open
Abstract
Two different stroke mechanisms are involved in small vessel disease: branch atheromatous disease (BAD) and lipohyalinotic degeneration (LD). We compared mechanisms of stroke in lenticulostriate arteries (LSA) vs. anterior pontine arteries (APA) and verified factors associated with stroke mechanisms, including shape of middle cerebral artery (MCA) and basilar artery (BA). We retrospectively reviewed patients with acute ischemic stroke with penetrating artery territory confirmed by MRI. The mechanisms of stroke were categorized based on diffusion-weighted imaging; BAD was defined as lesion larger than 10 mm in LSA and lesions involving basal pontine in APA. Other lesions were classified as LD. The shapes of MCA and BA were classified as straight, with one angle, or with two angles (U, C or S shape, respectively) using anterior-posterior view. The study included 221 patients. LD was more common in LSA infarcts, but BAD was more common in APA infarcts (p < 0.001). Low initial National Institutes of Health Stroke Scale [Adjusted Odds ratio (aOR) = 0.78; p < 0.001], absence of hyperlipidemia [aOR = 0.31; p = 0.002], previous statin use [aOR = 4.35; p = 0.028] LSA infarcts [reference = APA territory; aOR = 11.07; p < 0.001], and S-shaped vessels (reference = straight shaped vessels; aOR = 3.51; p = 0.004) were independently associated with LD. Angulations in the mother vessels may be more associated with true small vessel disease more with LD than BAD.
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Mechanisms of Stroke in Patients with Fetal Posterior Cerebral Artery. J Stroke Cerebrovasc Dis 2022; 31:106518. [DOI: 10.1016/j.jstrokecerebrovasdis.2022.106518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/31/2022] [Accepted: 04/13/2022] [Indexed: 11/18/2022] Open
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Kwan J, Hafdi M, Chiang LLW, Myint PK, Wong LS, Quinn TJ. Antithrombotic therapy to prevent cognitive decline in people with small vessel disease on neuroimaging but without dementia. Cochrane Database Syst Rev 2022; 7:CD012269. [PMID: 35833913 PMCID: PMC9281623 DOI: 10.1002/14651858.cd012269.pub2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Cerebral small vessel disease is a progressive disease of the brain's deep perforating blood vessels. It is usually diagnosed based on lesions seen on brain imaging. Cerebral small vessel disease is a common cause of stroke but can also cause a progressive cognitive decline. As antithrombotic therapy is an established treatment for stroke prevention, we sought to determine whether antithrombotic therapy might also be effective in preventing cognitive decline in people with small vessel disease. OBJECTIVES To assess the effects of antithrombotic therapy for prevention of cognitive decline in people with small vessel disease on neuroimaging but without dementia. SEARCH METHODS We searched ALOIS, the Cochrane Dementia and Cognitive Improvement Review Group's Specialised Register, and the Cochrane Stroke Group's Specialised Register; the most recent search was on 21 July 2021. We also searched MEDLINE, Embase, four other databases and two trials registries. We searched the reference lists of the articles retrieved from these searches. As trials with a stroke focus may include relevant subgroup data, we complemented these searches with a focussed search of all antithrombotic titles in the Cochrane Stroke Group database. SELECTION CRITERIA: We included randomised controlled trials (RCT) of people with neuroimaging evidence of at least mild cerebral small vessel disease (defined here as white matter hyperintensities, lacunes of presumed vascular origin and subcortical infarcts) but with no evidence of dementia. The trials had to compare antithrombotic therapy of minimum 24 weeks' duration to no antithrombotic therapy (either placebo or treatment as usual), or compare different antithrombotic treatment regimens. Antithrombotic therapy could include antiplatelet agents (as monotherapy or combination therapy), anticoagulants or a combination. DATA COLLECTION AND ANALYSIS Two review authors independently screened all the titles identified by the searches. We assessed full texts for eligibility for inclusion according to our prespecified selection criteria, extracted data to a proforma and assessed risk of bias using the Cochrane tool for RCTs. We evaluated the certainty of evidence using GRADE. Due to heterogeneity across included participants, interventions and outcomes of eligible trials, it was not possible to perform meta-analyses. MAIN RESULTS We included three RCTs (3384 participants). One study investigated the effect of antithrombotic therapy in participants not yet on antithrombotic therapy; two studies investigated the effect of additional antithrombotic therapy, one in a population already taking a single antithrombotic agent and one in a mixed population (participants on an antithrombotic drug and antithrombotic-naive participants). Intervention and follow-up durations varied from 24 weeks to four years. Jia 2016 was a placebo-controlled trial assessing 24 weeks of treatment with DL-3-n-butylphthalide (a compound with multimodal actions, including a putative antiplatelet effect) in 280 Chinese participants with vascular cognitive impairment caused by subcortical ischaemic small vessel disease, but without dementia. There was very low-certainty evidence for a small difference in cognitive test scores favouring treatment with DL-3-n-butylphthalide, as measured by the 12-item Alzheimer's Disease Assessment Scale-Cognitive subscale (adjusted mean difference -1.07, 95% confidence interval (CI) -2.02 to -0.12), but this difference may not be clinically relevant. There was also very low-certainty evidence for greater proportional improvement measured with the Clinician Interview-Based Impression of Change-Plus Caregiver Input (57% with DL-3-n-butylphthalide versus 42% with placebo; P = 0.01), but there was no difference in other measures of cognition (Mini-Mental State Examination and Clinical Dementia Rating) or function. There was no evidence of a difference in adverse events between treatment groups. The SILENCE RCT compared antithrombotic therapy (aspirin) and placebo during four years of treatment in 83 participants with 'silent brain infarcts' who were on no prior antithrombotic therapy. There was very low-certainty evidence for no difference between groups across various measures of cognition and function, rates of stroke or adverse events. The Secondary Prevention of Subcortical Stroke Study (SPS3) compared dual antiplatelet therapy (clopidogrel plus aspirin) to aspirin alone in 3020 participants with recent lacunar stroke. There was low-certainty evidence of no effect on cognitive outcomes as measured by the Cognitive Abilities Screening Instruments (CASI) assessed annually over five years. There was also low-certainty evidence of no difference in the annual incidence of mild cognitive decline between the two treatment groups (9.7% with dual antiplatelet therapy versus 9.9% with aspirin), or the annual stroke recurrence rate (2.5% with dual antiplatelet therapy versus 2.7% with aspirin). Bleeding risk may be higher with dual antiplatelet therapy (hazard ratio (HR) 2.15, 95% CI 1.49 to 3.11; low certainty evidence), but there may be no significant increase in intracerebral bleeding risk (HR 1.52, 95% CI 0.79 to 2.93; low-certainty evidence). None of the included trials assessed the incidence of new dementia. AUTHORS' CONCLUSIONS We found no convincing evidence to suggest any clinically relevant cognitive benefit of using antithrombotic therapy in addition to standard treatment in people with cerebral small vessel disease but without dementia, but there may be an increased bleeding risk with this approach. There was marked heterogeneity across the trials and the certainty of the evidence was generally poor.
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Affiliation(s)
- Joseph Kwan
- Department of Brain Sciences, Imperial College London, London, UK
| | - Melanie Hafdi
- Department of Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, Netherlands
| | - Lorraine L W Chiang
- Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Phyo K Myint
- Institute of Applied Health Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Li Siang Wong
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
| | - Terry J Quinn
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, UK
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11
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Su C, Yang X, Wei S, Zhao R. Association of Cerebral Small Vessel Disease With Gait and Balance Disorders. Front Aging Neurosci 2022; 14:834496. [PMID: 35875801 PMCID: PMC9305071 DOI: 10.3389/fnagi.2022.834496] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 06/14/2022] [Indexed: 12/27/2022] Open
Abstract
Cerebral small vessel disease (CSVD) is a common cerebrovascular disease and an important cause of gait and balance disorders. Gait and balance disorders can further lead to an increased risk of falls and a decreased quality of life. CSVD can damage gait and balance function by affecting cognitive function or directly disrupting motor pathways, and different CSVD imaging features have different characteristics of gait and balance impairment. In this article, the correlation between different imaging features of sporadic CSVD and gait and balance disorders has been reviewed as follows, which can provide beneficial help for standardized management of CSVD.
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12
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Cho BJ, Lee M, Han J, Kwon S, Oh MS, Yu KH, Lee BC, Kim JH, Kim C. Prediction of White Matter Hyperintensity in Brain MRI Using Fundus Photographs via Deep Learning. J Clin Med 2022; 11:jcm11123309. [PMID: 35743380 PMCID: PMC9224833 DOI: 10.3390/jcm11123309] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/31/2022] [Accepted: 06/06/2022] [Indexed: 02/05/2023] Open
Abstract
Purpose: We investigated whether a deep learning algorithm applied to retinal fundoscopic images could predict cerebral white matter hyperintensity (WMH), as represented by a modified Fazekas scale (FS), on brain magnetic resonance imaging (MRI). Methods: Participants who had undergone brain MRI and health-screening fundus photography at Hallym University Sacred Heart Hospital between 2010 and 2020 were consecutively included. The subjects were divided based on the presence of WMH, then classified into three groups according to the FS grade (0 vs. 1 vs. 2+) using age matching. Two pre-trained convolutional neural networks were fine-tuned and evaluated for prediction performance using 10-fold cross-validation. Results: A total of 3726 fundus photographs from 1892 subjects were included, of which 905 fundus photographs from 462 subjects were included in the age-matched balanced dataset. In predicting the presence of WMH, the mean area under the receiver operating characteristic curve was 0.736 ± 0.030 for DenseNet-201 and 0.724 ± 0.026 for EfficientNet-B7. For the prediction of FS grade, the mean accuracies reached 41.4 ± 5.7% with DenseNet-201 and 39.6 ± 5.6% with EfficientNet-B7. The deep learning models focused on the macula and retinal vasculature to detect an FS of 2+. Conclusions: Cerebral WMH might be partially predicted by non-invasive fundus photography via deep learning, which may suggest an eye–brain association.
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Affiliation(s)
- Bum-Joo Cho
- Department of Ophthalmology, Hallym University Sacred Heart Hospital, Anyang 14068, Korea; (B.-J.C.); (S.K.)
- Medical Artificial Intelligence Center, Hallym University Medical Center, Anyang 14068, Korea;
- Division of Biomedical Informatics, Seoul National University Biomedical Informatics (SNUBI), Seoul National University College of Medicine, Seoul 03080, Korea
| | - Minwoo Lee
- Department of Neurology, Hallym Neurological Institute, Hallym University Sacred Heart Hospital, Anyang 14068, Korea; (M.L.); (M.S.O.); (K.-H.Y.); (B.-C.L.)
| | - Jiyong Han
- Medical Artificial Intelligence Center, Hallym University Medical Center, Anyang 14068, Korea;
| | - Soonil Kwon
- Department of Ophthalmology, Hallym University Sacred Heart Hospital, Anyang 14068, Korea; (B.-J.C.); (S.K.)
| | - Mi Sun Oh
- Department of Neurology, Hallym Neurological Institute, Hallym University Sacred Heart Hospital, Anyang 14068, Korea; (M.L.); (M.S.O.); (K.-H.Y.); (B.-C.L.)
| | - Kyung-Ho Yu
- Department of Neurology, Hallym Neurological Institute, Hallym University Sacred Heart Hospital, Anyang 14068, Korea; (M.L.); (M.S.O.); (K.-H.Y.); (B.-C.L.)
| | - Byung-Chul Lee
- Department of Neurology, Hallym Neurological Institute, Hallym University Sacred Heart Hospital, Anyang 14068, Korea; (M.L.); (M.S.O.); (K.-H.Y.); (B.-C.L.)
| | - Ju Han Kim
- Division of Biomedical Informatics, Seoul National University Biomedical Informatics (SNUBI), Seoul National University College of Medicine, Seoul 03080, Korea
- Correspondence: (J.H.K.); (C.K.); Tel.: +82-2-740-8320 (J.H.K.); +82-33-240-5255 (C.K.); Fax: +82-2-3673-2167 (J.H.K.); +82-33-255-6244 (C.K.)
| | - Chulho Kim
- Department of Neurology, Chuncheon Sacred Heart Hospital, Chuncheon 24253, Korea
- Correspondence: (J.H.K.); (C.K.); Tel.: +82-2-740-8320 (J.H.K.); +82-33-240-5255 (C.K.); Fax: +82-2-3673-2167 (J.H.K.); +82-33-255-6244 (C.K.)
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13
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Cerebral small vessel disease alters neurovascular unit regulation of microcirculation integrity involved in vascular cognitive impairment. Neurobiol Dis 2022; 170:105750. [DOI: 10.1016/j.nbd.2022.105750] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/09/2022] [Accepted: 05/08/2022] [Indexed: 12/25/2022] Open
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14
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Feng X, Tang Q, Cheng C, Xu S. Low serum lipid levels, use of statin and cerebral microbleeds: A systematic review and meta-analysis. J Clin Neurosci 2021; 94:216-225. [PMID: 34863441 DOI: 10.1016/j.jocn.2021.10.032] [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: 04/21/2021] [Revised: 09/23/2021] [Accepted: 10/24/2021] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Previous studies have shown that low serum lipids and statins may be related to cerebral hemorrhage. We made the meta-analysis to evaluate the associations between serum lipid levels or statins treatment and cerebral microbleeds (CMBs) to identify whether the similar correlation also existed. METHOD We comprehensively searched the Medline, Embase, Cochrane library, Web of Science, only included English journal articles, and systematically collected the observational studies and randomized controlled trials (RCTs) from September 1975 to August 2021. Random-effects model was used to pool data. Statistical heterogeneity was assessed by I2 statistic and chi-square. 11 items checklists recommended by the Agency for Healthcare Research and Quality (AHRQ), Newcastle-Ottawa Scale (NOS), and Cochrane Risk of Bias tool (ROB) were used to evaluate the methodological quality of cross-sectional studies, cohort studies and randomized controlled trial, respectively. RESULTS Five cohort studies, two RCTs, and ten cross-sectional studies, including 16,637 subjects and 2663 CMBs patients, were included in our quantitative synthesis. Our study found that after adjusting the covariates, total cholesterol (TC) was significantly inversely correlated with the prevalent CMBs in any location, while total triglycerides (TG) and High-density lipoprotein (HDL) were significantly inversely associated with prevalent deep CMBs. Low-density lipoprotein (LDL) was negatively associated with incident CMBs after adjusted confounders. We did not found statistical differences between statin and CMBs after adjusted covariates. CONCLUSION Serum major lipid (TC TG HDL LDL) levels may be inversely associated with CMBs. Currently, no sufficient evidence proves that statin therapy is the risk factor of CMBs.
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Affiliation(s)
- Xiao Feng
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiaoqiao Tang
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chang Cheng
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shabei Xu
- Department of Neurology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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15
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Elyas S, Adingupu D, Aizawa K, Casanova F, Gooding K, Fulford J, Mawson D, Gates PE, Shore AC, Strain D. Cerebral small vessel disease, systemic vascular characteristics and potential therapeutic targets. Aging (Albany NY) 2021; 13:22030-22039. [PMID: 34550097 PMCID: PMC8507297 DOI: 10.18632/aging.203557] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 08/31/2021] [Indexed: 12/05/2022]
Abstract
Introduction: Cerebral small vessel disease (SVD) is prevalent in the elderly population and is associated with increased risk of dementia, stroke and disability. Currently there are no clear targets or strategies for the treatment of cerebral SVD. We set out to identify modifiable vascular treatment targets. Patients and Methods: 112 participants with and without a history of CVD underwent macrovascular, microvascular and endothelial function tests and an MRI head scan. Results: Increased carotid intima media thickness and carotid-femoral pulse wave velocity were associated with cerebral WMH (β=1·1 p=0·001 and β=1·66, p<0·0001 respectively). Adjusted cerebral resistance index (p=0·03) and brachial flow mediated dilation time to peak (p=0·001) were associated with the severity of cerebral WMH independent of age and sex. Post occlusive reactive hyperaemia time as a measure of microvascular reactivity was associated with WMH after adjustment for age and sex (p=0·03). Ankle Brachial Pressure Index and urinary albumin excretion rate predicted the severity of cerebral WMH (p=0·02 and 0·01 respectively). Age and hypertension were the most important risk factors for WMH severity (p< 0·0001). Discussion: In addition to hypertension, microalbuminuria, arterial stiffness, vascular reactivity and cerebrovascular resistance could be potential treatment targets to halt the development or progression of cerebral SVD.
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Affiliation(s)
- Salim Elyas
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK.,Academic Department of Healthcare for Older People, Royal Devon and Exeter NHS Foundation Trust, Exeter EX2 5DW, UK
| | - Damilola Adingupu
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Kunihiko Aizawa
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Francesco Casanova
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Kim Gooding
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Jonathan Fulford
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Dave Mawson
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Phillip E Gates
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - Angela C Shore
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK
| | - David Strain
- Institute of Biomedical and Clinical Science and NIHR Exeter Clinical Research Facility, University of Exeter Medical School, Exeter EX2 5AX, UK.,Academic Department of Healthcare for Older People, Royal Devon and Exeter NHS Foundation Trust, Exeter EX2 5DW, UK
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16
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Fang F, Cao R, Luo Q, Ge R, Lai M, Yang J, Ma M, Kang M, Zhang L, Wang Y, Peng Y. The silent occurrence of cerebral small vessel disease in nonelderly patients with type 2 diabetes mellitus. J Diabetes 2021; 13:735-743. [PMID: 33559402 DOI: 10.1111/1753-0407.13164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/22/2021] [Accepted: 02/03/2021] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND The prevalence of cerebral small vessel disease (SVD) increases in elderly patients with type 2 diabetes (T2DM), exacerbating cognitive decline. However, the prevalence and the severity of SVD in dementia-free nonelderly T2DM patients were largely unknown. Our primary aim is to investigate SVD in such patients, with a specific focus on the correlation between SVD and diabetic peripheral sensorimotor polyneuropathy (DSP). METHODS We recruited 180 young and middle-aged subjects without cognitive impairment (106 with T2DM, 74 controls). Signs of cerebral SVD on magnetic resonance image were investigated, and the overall SVD burden was evaluated by a combined score. Patients with T2DM underwent further detailed DSP assessment. Regression models were used to investigate the association of SVD with the presence of T2DM, and the associations of the prevalence and severity of SVD and DSP were also explored in patients with T2DM. RESULTS The prevalence of microbleeds and overall burden of SVD were significantly higher in T2DM patients than in the controls. Further, the presence of DSP related to an increased risk of SVD after adjustment in diabetic group. Moreover, Toronto Clinical Scoring System values were positively associated with the increased SVD scores, and bilateral sural sensory nerve conduction velocities were negatively associated with increasingly severity of SVD scores. CONCLUSION The current findings extended the increasing prevalence of SVD to dementia-free nonelderly patients with T2DM, suggesting that the time for cognitive screening and prevention might be moved forward in T2DM patients, especially for those with DSP.
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Affiliation(s)
- Fang Fang
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Rong Cao
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qian Luo
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Renbin Ge
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Mengyu Lai
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jiaying Yang
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Mingming Ma
- Department of Ophthalmology, National Clinical Research Center for Eye Disease, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Mei Kang
- Clinical Research Center, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Lei Zhang
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yufan Wang
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yongde Peng
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai, China
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17
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Hear me out: rethinking internal auditory meatus magnetic resonance imaging in primary care. A cohort evaluation. The Journal of Laryngology & Otology 2021; 136:37-44. [PMID: 34412715 DOI: 10.1017/s0022215121002243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Background
Imaging detects acoustic neuroma, a rare pathology associated with asymmetric sensorineural hearing loss and tinnitus, that is mostly managed conservatively. Scanning indication is debatable, without evaluation in primary care, despite the high burden of audiovestibular symptoms and commissioning of general practitioner imaging.
Method
Cohort evaluation of two years' internal auditory meatus magnetic resonance imaging in primary care.
Results
Of 200 scans requested by 77 general practitioners, only 33 per cent conformed to guideline indications. Most were referred to specialists, regardless of result. Only 10.5 per cent were appropriately imaged to rule out neuroma without specialist referral. One neuroma was detected (diagnostic yield 0.5 per cent) in a patient already referred. Incidental findings were shown in 44.5 per cent, triggering low-value cascades in 18 per cent. Whilst fewer than 1 in a 1000 imaged patients may improve through surgery, 1 in 5 can suffer negative imaging cascades.
Conclusion
Considering the bi-directional relationship between distress and audio-vestibular symptoms, anxiety-provoking imaging overuse should be minimised. In low-prevalence primary care, retrocochlear imaging could be limited to those with asymmetric sensorineural hearing loss. Alternatively, assessment and imaging could be shifted to audiologist-led settings, with a wider therapeutic offer, likely more beneficial and cost-effective than conventional surgical pathways.
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18
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Lee KP, Chang AYW, Sung PS. Association between Blood Pressure, Blood Pressure Variability, and Post-Stroke Cognitive Impairment. Biomedicines 2021; 9:773. [PMID: 34356837 PMCID: PMC8301473 DOI: 10.3390/biomedicines9070773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/23/2021] [Accepted: 06/29/2021] [Indexed: 12/18/2022] Open
Abstract
After stroke, dynamic changes take place from necrotic-apoptotic continuum, inflammatory response to poststroke neurogenesis, and remodeling of the network. These changes and baseline brain pathology such as small vessel disease (SVD) and amyloid burden may be associated with the occurrence of early or late poststroke cognitive impairment (PSCI) or dementia (PSD), which affect not only stroke victims but also their families and even society. We reviewed the current concepts and understanding of the pathophysiology for PSCI/PSD and identified useful tools for the diagnosis and the prediction of PSCI in serological, CSF, and image characteristics. Then, we untangled their relationships with blood pressure (BP) and blood pressure variability (BPV), important but often overlooked risk factors for PSCI/PSD. Finally, we provided evidence for the modifying effects of BP and BPV on PSCI as well as pharmacological and non-pharmacological interventions and life style modification for PSCI/PSD prevention and treatment.
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Affiliation(s)
- Kang-Po Lee
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Department of Neurology, E-DA Hospital, Kaohsiung 824, Taiwan
| | - Alice Y. W. Chang
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Pi-Shan Sung
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan;
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
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19
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El Nahas NM, Aref HM, Alloush TK, Fahmy NA, Ahmed KA, El Basiouny AA, Tork MA, Elbokl AM, Shokri HM. Borderzone Infarction and Small Vessel Disease in a Sample of Egyptian Stroke Patients: Differences and Similarities. Neurol India 2021; 69:670-675. [PMID: 34169866 DOI: 10.4103/0028-3886.317238] [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] [Indexed: 11/04/2022]
Abstract
Background The anatomical location of white matter hyperintense lesions in small vessel disease are apparently similar to those of borderzone infarction. The objective of this study is to find clinical and radiological points of differentiation between the two vascular disorders in a sample of Egyptian patients which might have an impact on primary and secondary prevention. Methods Ischemic stroke patients with white matter lesions were categorized into two groups: small vessel disease and borderzone infarctions. NIHSS was done on admission. Risk factor profile was reported, and investigations done including: HbA1C, lipid profile, CRP, ECG, echocardiography, carotid duplex, brain MRI, MRA and MR perfusion study. Results 46 patients completed the study, 29 with SVD and 17 with BZI. Smoking, hypertension and recurrent stroke were more common in borderzone infarctions, but only diabetes was significantly higher (p = 0.047). Limb shaking was more observed in borderzone infarctions (p = 0.049). Radiologically: lacunar pattern was observed more in small vessel disease, while rosary pattern was more in borderzone infarctions (p = 0.04). FLAIR symmetrical lesions and microbleeds were more significant in small vessel disease (p = <0.001; 0.048, respectively). Perfusion study time to peak denoted evidence of significant hypoperfusion in all regions of interest in borderzone infarctions. Conclusion Limb shaking, retinal claudication or syncope, with MRI showing rosary pattern of white matter hyperintensity, few microbleeds and markedly impaired perfusion favor the diagnosis of borderzone infarctions. On the other hand, presence of lacunae, FLAIR showing symmetrical WMH and microbleeds with minimal or no perfusion deficit suggests the diagnosis of small vessel disease.
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Affiliation(s)
- Nevine M El Nahas
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Hany M Aref
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Taha K Alloush
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Nagia A Fahmy
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Khaled A Ahmed
- Department Radiology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ahmed A El Basiouny
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Mohamed A Tork
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ahmed M Elbokl
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Hossam M Shokri
- Department Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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20
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Zee B, Wong Y, Lee J, Fan Y, Zeng J, Lam B, Wong A, Shi L, Lee A, Kwok C, Lai M, Mok V, Lau A. Machine-learning method for localization of cerebral white matter hyperintensities in healthy adults based on retinal images. Brain Commun 2021; 3:fcab124. [PMID: 34222872 PMCID: PMC8249101 DOI: 10.1093/braincomms/fcab124] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 03/26/2021] [Accepted: 04/14/2021] [Indexed: 11/12/2022] Open
Abstract
Retinal vessels are known to be associated with various cardiovascular and cerebrovascular disease outcomes. Recent research has shown significant correlations between retinal characteristics and the presence of cerebral small vessel disease as measured by white matter hyperintensities from cerebral magnetic resonance imaging. Early detection of age-related white matter changes using retinal images is potentially helpful for population screening and allow early behavioural and lifestyle intervention. This study investigates the ability of the machine-learning method for the localization of brain white matter hyperintensities. All subjects were age 65 or above without any history of stroke and dementia and recruited from local community centres and community networks. Subjects with known retinal disease or disease influencing vessel structure in colour retina images were excluded. All subjects received MRI on the brain, and age-related white matter changes grading was determined from MRI as the primary endpoint. The presence of age-related white matter changes on each of the six brain regions was also studied. Retinal images were captured using a fundus camera, and the analysis was done based on a machine-learning approach. A total of 240 subjects are included in the study. The analysis of various brain regions included the left and right sides of frontal lobes, parietal–occipital lobes and basal ganglia. Our results suggested that data from both eyes are essential for detecting age-related white matter changes in the brain regions, but the retinal parameters useful for estimation of the probability of age-related white matter changes in each of the brain regions may differ for different locations. Using a classification and regression tree approach, we also found that at least three significant heterogeneous subgroups of subjects were identified to be essential for the localization of age-related white matter changes. Namely those with age-related white matter changes in the right frontal lobe, those without age-related white matter changes in the right frontal lobe but with age-related white matter changes in the left parietal–occipital lobe, and the rest of the subjects. Outcomes such as risks of severe grading of age-related white matter changes and the proportion of hypertension were significantly related to these subgroups. Our study showed that automatic retinal image analysis is a convenient and non-invasive screening tool for detecting age-related white matter changes and cerebral small vessel disease with good overall performance. The localization analysis for various brain regions shows that the classification models on each of the six brain regions can be done, and it opens up potential future clinical application.
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Affiliation(s)
- Benny Zee
- Centre for Clinical Research and Biostatistics, Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Clinical Trials and Biostatistics Lab, CUHK Shenzhen Research Institute, Shenzhen, China
| | - Yanny Wong
- Margaret KL Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia and Gerald Choa Neuroscience Centre, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Jack Lee
- Centre for Clinical Research and Biostatistics, Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Clinical Trials and Biostatistics Lab, CUHK Shenzhen Research Institute, Shenzhen, China
| | - Yuhua Fan
- Department of Neurology, First Affiliated Hospital of Sun Yat-Sen University, Guangdong, China.,Key Laboratory for Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department, National Key Discipline, Guangzhou 510080, China
| | - Jinsheng Zeng
- Department of Neurology, First Affiliated Hospital of Sun Yat-Sen University, Guangdong, China.,Key Laboratory for Diagnosis and Treatment of Major Neurological Diseases, National Key Clinical Department, National Key Discipline, Guangzhou 510080, China
| | - Bonnie Lam
- Margaret KL Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia and Gerald Choa Neuroscience Centre, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Adrian Wong
- Margaret KL Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia and Gerald Choa Neuroscience Centre, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Lin Shi
- BrainNow Research Institute, Shenzhen, Guangdong Province, China.,Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Allen Lee
- Department of Psychiatry, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Chloe Kwok
- Centre for Clinical Research and Biostatistics, Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Maria Lai
- Centre for Clinical Research and Biostatistics, Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Vincent Mok
- Margaret KL Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia and Gerald Choa Neuroscience Centre, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
| | - Alexander Lau
- Margaret KL Cheung Research Centre for Management of Parkinsonism, Therese Pei Fong Chow Research Centre for Prevention of Dementia and Gerald Choa Neuroscience Centre, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China.,Division of Neurology, Department of Medicine and Therapeutics, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, China
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21
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Despa F, Goldstein LB. Amylin Dyshomeostasis Hypothesis: Small Vessel-Type Ischemic Stroke in the Setting of Type-2 Diabetes. Stroke 2021; 52:e244-e249. [PMID: 33947210 PMCID: PMC8154741 DOI: 10.1161/strokeaha.121.034363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Recent histological analyses of human brains show that small vessel-type injuries in the setting of type-2 diabetes colocalize with deposits of amylin, an amyloid-forming hormone secreted by the pancreas. Amylin inclusions are also identified in circulating red blood cells in people with type-2 diabetes and stroke or cardiovascular disease. In laboratory models of type-2 diabetes, accumulation of aggregated amylin in blood and the cerebral microvasculature induces brain microhemorrhages and reduces cerebral blood flow leading to white matter ischemia and neurological deficits. At the cellular level, aggregated amylin causes cell membrane lipid peroxidation injury, downregulation of tight junction proteins, and activation of proinflammatory signaling pathways which, in turn, induces macrophage activation and macrophage infiltration in vascular areas positive for amylin deposition. We review each step of this cascade based on experimental and clinical evidence and propose the hypothesis that systemic amylin dyshomeostasis may underlie the disparity between glycemic control and stroke risk and may be a therapeutic target to reduce the risk of small vessel ischemic stroke in patients with type-2 diabetes.
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Affiliation(s)
- Florin Despa
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, USA,Department of Neurology, University of Kentucky, Lexington, KY, USA
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22
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Kim JS. Role of Blood Lipid Levels and Lipid-Lowering Therapy in Stroke Patients with Different Levels of Cerebral Artery Diseases: Reconsidering Recent Stroke Guidelines. J Stroke 2021; 23:149-161. [PMID: 34102752 PMCID: PMC8189863 DOI: 10.5853/jos.2021.01249] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/19/2021] [Indexed: 01/13/2023] Open
Abstract
Hyperlipidemia is an important risk factor for ischemic stroke; the Stroke Prevention by Aggressive Reduction in Cholesterol Level and Treat Stroke to Target studies have shown that statins are beneficial for patients with stroke and that a low target for low-density lipoprotein cholesterol (LDL-C) concentration may maximize this benefit. Based on these results, recent guidelines have emphasized the application of "high-intensity statins" and "low LDL-C target" strategies in patients with stroke. However, it should be kept in mind that the role of blood lipids as a risk factor and benefit of lipid-lowering therapy are different among patients with different levels of cerebral arterial diseases. Studies have suggested that hypolipidemia, but not hyperlipidemia, is a risk factor for small vessel diseases (SVDs) such as intracerebral hemorrhages, microbleeds, white matter hyperintensities, and perhaps, lacunar infarction. Although lipid-lowering agents might benefit certain patients with SVD, high-intensity statin and low LDL-C target strategies cannot be applied. In contrast, these strategies are important in patients with extracranial atherosclerosis, such as internal carotid disease, considering ample evidence of the benefits of lipid-lowering agents. Imaging studies have shown that statins stabilize vulnerable plaques in these patients. Although lipid-lowering agents are likely to benefit patients with intracranial atherosclerosis, the degree of their benefit and appropriate target LDL-C level for these patients remain unclear. More studies are needed to elucidate the appropriate lipid-modifying strategies in patients with stroke with different levels of cerebral artery disease.
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Affiliation(s)
- Jong S Kim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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23
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Zheng K, Zhou Y, Qian Y, Wang H, Han F, Ni J, Hou B, You H, Chen L, Zhu Y, Feng F, Cui L, Li X. Increased Premature Cerebral Small Vessel Diseases in Dialysis Patients: A Retrospective Cross-Sectional Study. Nephron Clin Pract 2021; 145:330-341. [PMID: 33915538 DOI: 10.1159/000513121] [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: 08/15/2020] [Accepted: 11/16/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Growing data indicate a higher prevalence of cerebrovascular diseases in patients with ESRD. Cerebral small-vessel disease (CSVD) is an important risk factor of stroke and dementia. A comprehensive assessment of CSVD in a dialysis population is needed. METHODS In this retrospective cross-sectional study, we enrolled 179 dialysis patients and 351 controls matched by sex and age with normal serum creatinine. The presence and locations of 3 main features of CSVD in dialysis patients, including lacunes, cerebral microbleeds (CMBs), and white matter hyperintensities (WMHs), were evaluated with brain magnetic resonance imaging and compared with controls. Univariate and multivariate analyses were performed to identify risk factors. RESULTS Compared with controls, the prevalence of CSVD was significantly increased in dialysis patients (odds ratio [OR] 2.66, 95% confidence interval [CI] 1.26-5.62). Among them, risks of CMBs and WMHs were increased in dialysis (OR 4.01, 95% CI 1.78-9.42; 3.91, 95% CI 1.67-9.15), except for lacunes. The age of subjects with CSVD detected was significantly younger in the dialysis group (p = 0.002). Unlike controls, basal ganglia were most affected by lacunes and CMBs in dialysis patients. In dialysis patients, multivariate analysis further revealed that aging, smoking, and hyperlipidemia were significantly associated with CSVD, while dialysis modality was not significant. CONCLUSION We demonstrated a higher prevalence and early-onset tendency of CSVD in dialysis patients, especially for CMBs and WMHs. Dialysis patients showed different patterns and associated factors for CSVD.
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Affiliation(s)
- Ke Zheng
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Yangzhong Zhou
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Yujun Qian
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Haiyun Wang
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Fei Han
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Jun Ni
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Bo Hou
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Hui You
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Limeng Chen
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Yicheng Zhu
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Feng Feng
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Liying Cui
- Department of Neurology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Xuemei Li
- Department of Nephrology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
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24
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Thomassen JQ, Tolstrup JS, Nordestgaard BG, Tybjærg-Hansen A, Frikke-Schmidt R. Plasma Concentrations of Magnesium and Risk of Dementia: A General Population Study of 102 648 Individuals. Clin Chem 2021; 67:899-911. [PMID: 33846733 DOI: 10.1093/clinchem/hvab041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 02/18/2021] [Indexed: 01/13/2023]
Abstract
BACKGROUND Low and high concentrations of plasma magnesium are associated with increased risk of future all-cause dementia; however, the underlying reasons remain elusive. The magnesium ion is an important electrolyte serving as a cofactor in many enzymatic processes in the human organism. Magnesium affects both neuronal and vascular functions. We investigated the associations of plasma concentrations of magnesium associate with common subtypes of dementia as Alzheimer dementia and non-Alzheimer dementia, and potential pathways by which magnesium may affect risk of dementia. METHODS Plasma concentrations of magnesium were measured in 102 648 individuals from the Copenhagen General Population Study. Cox regression and natural effects mediation analyses evaluated associations with either Alzheimer dementia or non-Alzheimer dementia. RESULTS Multifactorially adjusted hazard ratios for non-Alzheimer dementia were 1.50(95% confidence interval (CI):1.21-1.87) for the lowest and 1.34(1.07-1.69) for the highest vs the fourth quintile (reference) of plasma magnesium concentrations. Diabetes, cumulated smoking, stroke, and systolic blood pressure mediated 10.4%(3.1-22.8%), 6.8%(1.2-14.0%), 1.3%(0.1-3.6%), and 1.0%(0.2-2.6%), respectively, in the lowest quintile, whereas stroke mediated 3.2%(0.4-11.9%) in the highest quintile. No associations were observed for Alzheimer dementia. CONCLUSIONS Low and high plasma magnesium concentrations were associated with high risk of vascular-related non-Alzheimer dementia, with the lowest risk observed at a concentration of 2.07 mg/dL (0.85 mmol/L). No association was observed for Alzheimer dementia. Mediation analysis suggested that diabetes may be in the causal pathway between low plasma magnesium concentrations and high risk of non-Alzheimer dementia, while cumulated smoking, stroke, and systolic blood pressure played minor mediating roles.
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Affiliation(s)
| | - Janne S Tolstrup
- National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
| | - Børge G Nordestgaard
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Herlev, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Herlev, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Anne Tybjærg-Hansen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Herlev, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Ruth Frikke-Schmidt
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Herlev, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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25
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Abstract
Age-related sporadic cerebral small vessel disease (CSVD) has gained increasing attention over the past decades because of its increasing prevalence associated with an aging population. The widespread application of and advances in brain magnetic resonance imaging in recent decades have significantly increased researchers’ understanding in the in vivo evolution of CSVD, its impact upon the brain, its risk factors, and the mechanisms that explain the various clinical manifestation associated with sporadic CSVD. In this review, we aimed to provide an update on the pathophysiology, risk factors, biomarkers, and the determinants and spectrum of the clinical manifestation of sporadic CSVD.
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26
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Masjuan J, Gállego J, Aguilera J, Arenillas J, Castellanos M, Díaz F, Portilla J, Purroy F. Use of cardiovascular polypills for the secondary prevention of cerebrovascular disease. NEUROLOGÍA (ENGLISH EDITION) 2021. [DOI: 10.1016/j.nrleng.2017.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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27
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Leung TW, Wang L, Zou X, Soo Y, Pu Y, Ip HL, Chan A, Au LWC, Fan F, Ma SH, Ip B, Ma K, Lau AYL, Leung H, Hui KF, Li R, Li SH, Fu M, Fong WC, Liu J, Mok V, Wong KSL, Miao Z, Ma N, Yu SCH, Leng X. Plaque morphology in acute symptomatic intracranial atherosclerotic disease. J Neurol Neurosurg Psychiatry 2020; 92:jnnp-2020-325027. [PMID: 33239439 PMCID: PMC7958085 DOI: 10.1136/jnnp-2020-325027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/19/2020] [Accepted: 11/06/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND Intracranial atherosclerotic disease (ICAD) is globally a major ischaemic stroke subtype with high recurrence. Understanding the morphology of symptomatic ICAD plaques, largely unknown by far, may help identify vulnerable lesions prone to relapse. METHODS We prospectively recruited patients with acute ischaemic stroke or transient ischaemic attack attributed to high-grade ICAD (60%-99% stenosis). Plaque morphological parameters were assessed in three-dimensional rotational angiography, including surface contour, luminal stenosis, plaque length/thickness, upstream shoulder angulation, axial/longitudinal plaque distribution and presence of adjoining branch atheromatous disease (BAD). We compared morphological features of smooth, irregular and ulcerative plaques and correlated them with cerebral ischaemic lesion load downstream in MRI. RESULTS Among 180 recruited patients (median age=60 years; 63.3% male; median stenosis=75%), plaque contour was smooth (51 (28.3%)), irregular (101 (56.1%)) or ulcerative (28 (15.6%)). Surface ulcers were mostly at proximal (46.4%) and middle one-third (35.7%) of the lesions. Most (84.4%) plaques were eccentric, and half had their maximum thickness over the distal end. Ulcerative lesions were thicker (medians 1.6 vs 1.3 mm; p=0.003), had steeper upstream shoulder angulation (56.2° vs 31.0°; p<0.001) and more adjoining BAD (83.3% vs 57.0%; p=0.033) than non-ulcerative plaques. Ulcerative plaques were significantly associated with coexisting acute and chronic infarcts downstream (35.7% vs 12.5%; adjusted OR 4.29, 95% CI 1.65 to 11.14, p=0.003). Sensitivity analyses in patients with anterior-circulation ICAD lesions showed similar results in the associations between the plaque types and infarct load. CONCLUSIONS Ulcerative intracranial atherosclerotic plaques were associated with vulnerable morphological features and had a higher cumulative infarct load downstream.
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Affiliation(s)
- Thomas W Leung
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Li Wang
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xinying Zou
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China
| | - Yannie Soo
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Yuehua Pu
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China
| | - Hing Lung Ip
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Anne Chan
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Lisa Wing Chi Au
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Florence Fan
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Sze Ho Ma
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Bonaventure Ip
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Karen Ma
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Alexander Yuk-Lun Lau
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Howan Leung
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kwok Fai Hui
- Department of Medicine and Geriatrics, The United Christian Hospital, Hong Kong SAR, China
| | - Richard Li
- Department of Medicine, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China
| | - Siu Hung Li
- Department of Medicine, North District Hospital, Hong Kong SAR, China
| | - Michael Fu
- Department of Medicine and Geriatric, Tuen Mun Hospital, Hong Kong SAR, China
| | - Wing Chi Fong
- Department of Medicine, The Queen Elizabeth Hospital, Hong Kong SAR, China
| | - Jia Liu
- Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences, Shenzhen, Guangdong, China
| | - Vincent Mok
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Ka Sing Lawrence Wong
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Zhongrong Miao
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Beijing, China
| | - Ning Ma
- Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Beijing, China
| | - Simon C H Yu
- Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xinyi Leng
- Department of Medicine & Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China
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28
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Abstract
White matter hyperintensities (WMHs) have been associated with neurological complications including cognitive impairment. WMHs have been often described in HIV positive subjects and they have been linked to neurocognitive impairment, cerebrospinal fluid (CSF) residual viral replication and biomarkers of monocyte activation. Aim of this study was to grade WMHs in HIV-positive individuals using a simple visual scale and to explore their severity with clinical, neurocognitive and biomarker characteristics. Brain MRIs were retrospectively evaluated by two reviewers who rated WMHs following the "age-related white matter changes (ARWMC)" scale. 107 adult HIV-positive patients receiving lumbar punctures for clinical reasons were included. 70 patients (66.6%) were diagnosed with WMHs. Average WMH scores were higher in treated [7 (1-11)] vs. naïve individuals [3 (0-6)] (p = 0.008). Higher WHMs scores were observed in patients with chronic renal impairment along with chronic hepatitis (naïve) and longer HIV duration (treated participants). No consistent associations between plasma, CSF biomarkers and WMHs scores were found. 45 patients underwent full neurocognitive tests and WMHs scores were non-significantly higher in patients diagnosed with HAND [6.5 (0.5-8.3) vs. 1.5 (0-7), p = 0.165]; screening (IHDS and FAB), visuo-spatial (Corsi's) and auditory-verbal memory (disillabic words repetition) tests scored worse in patients with higher WMHs. In our population of HIV-positive patients with low CD4 nadir and partial CD4 cell recovery the burden of WMHs was associated with the duration of HIV infection and with commonly observed comorbidities (such as renal and hepatic impairment). Given the association with worse neurocognition, further studies on tailored interventions are needed.
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29
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Abstract
Elevated cholesterol is a major risk factor in the development of cardiovascular disease. Statins have proven to be effective in lowering low-density lipoprotein cholesterol as well as the incidence of cardiovascular events. As a result, statins are widely prescribed in the United States, with an estimated 35 million patients on statins. Many of these patients are older than age 65 and suffer from various comorbidities, including mild to severe cognitive impairment. Early studies looking at the effects of statins on cognition have shown that statin use may lead to mild reversible cognitive decline, although long-term studies have shown inconclusive findings. In recent years, studies have shown that the use of statins in certain groups of patients may lead to a reduction in the rate of cognitive decline. One hypothesis for this finding is that statin use can reduce the risk of cerebrovascular disease which may, in turn, reduce the risk of mild cognitive decline and dementia. With numerous patients currently prescribed statins and the likelihood that more patients will be prescribed the medication in the coming years, it is important to review the current literature to determine the association between statin use and cognitive decline, as well as determine how statins may be beneficial in preventing cognitive decline.
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Affiliation(s)
- Bhawneet Chadha
- From the Department of Medicine, Tufts Medical Center, Boston, MA
| | - William H Frishman
- Department of Medicine, New York Medical College/Westchester Medical Center, Valhalla, NY
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30
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Dadar M, Gee M, Shuaib A, Duchesne S, Camicioli R. Cognitive and motor correlates of grey and white matter pathology in Parkinson's disease. Neuroimage Clin 2020; 27:102353. [PMID: 32745994 PMCID: PMC7399172 DOI: 10.1016/j.nicl.2020.102353] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/25/2020] [Accepted: 07/15/2020] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Previous studies have found associations between grey matter atrophy and white matter hyperintensities (WMH) of vascular origin with cognitive and motor deficits in Parkinson's disease (PD). Here we investigate these relationships in a sample of PD patients and age-matched healthy controls. METHODS Data included 50 PD patients and 45 age-matched controls with T1-weighted and FLAIR scans at baseline, 18-months, and 36-months follow-up. Deformation-based morphometry was used to measure grey matter atrophy. SNIPE (Scoring by Nonlocal Image Patch Estimator) was used to measure Alzheimer's disease-like textural patterns in the hippocampi. WMHs were segmented using T1-weighted and FLAIR images. The relationship between MRI features and clinical scores was assessed using mixed-effects models. The motor subscore of the Unified Parkinson's Disease Rating Scale (UPDRSIII), number of steps in a walking trial, and Dementia Rating Scale (DRS) were used respectively as measures of motor function, gait, and cognition. RESULTS Substantia nigra atrophy was significantly associated with motor deficits, with a greater impact in PDs (p < 0.05). Hippocampal SNIPE scores were associated with cognitve decline in both PD and controls (p < 0.01). WMH burden was significantly associated with cognitive decline and increased motor deficits in the PD group, and gait deficits in both PD and controls (p < 0.03). CONCLUSION While substantia nigra atrophy and WMH burden were significantly associated with additional motor deficits, WMH burden and hippocampal atrophy were associated with cognitive deficits in PD patients. These results suggest an additive contribution of both grey and white matter damage to the motor and cognitive deficits in PD.
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Affiliation(s)
- Mahsa Dadar
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Laval University, Canada.
| | - Myrlene Gee
- Department of Medicine, Division of Neurology, University of Alberta, Canada.
| | - Ashfaq Shuaib
- Department of Medicine, Division of Neurology, University of Alberta, Canada.
| | - Simon Duchesne
- Department of Radiology and Nuclear Medicine, Faculty of Medicine, Laval University, Canada.
| | - Richard Camicioli
- Department of Medicine, Division of Neurology, University of Alberta, Canada.
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31
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Manukjan N, Ahmed Z, Fulton D, Blankesteijn WM, Foulquier S. A Systematic Review of WNT Signaling in Endothelial Cell Oligodendrocyte Interactions: Potential Relevance to Cerebral Small Vessel Disease. Cells 2020; 9:cells9061545. [PMID: 32630426 PMCID: PMC7349551 DOI: 10.3390/cells9061545] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/19/2020] [Accepted: 06/23/2020] [Indexed: 12/21/2022] Open
Abstract
Key pathological features of cerebral small vessel disease (cSVD) include impairment of the blood brain barrier (BBB) and the progression of white matter lesions (WMLs) amongst other structural lesions, leading to the clinical manifestations of cSVD. The function of endothelial cells (ECs) is of major importance to maintain a proper BBB. ECs interact with several cell types to provide structural and functional support to the brain. Oligodendrocytes (OLs) myelinate axons in the central nervous system and are crucial in sustaining the integrity of white matter. The interplay between ECs and OLs and their precursor cells (OPCs) has received limited attention yet seems of relevance for the study of BBB dysfunction and white matter injury in cSVD. Emerging evidence shows a crosstalk between ECs and OPCs/OLs, mediated by signaling through the Wingless and Int-1 (WNT)/β-catenin pathway. As the latter is involved in EC function (e.g., angiogenesis) and oligodendrogenesis, we reviewed the role of WNT/β-catenin signaling for both cell types and performed a systematic search to identify studies describing a WNT-mediated interplay between ECs and OPCs/OLs. Dysregulation of this interaction may limit remyelination of WMLs and render the BBB leaky, thereby initiating a vicious neuroinflammatory cycle. A better understanding of the role of this signaling pathway in EC-OL crosstalk is essential in understanding cSVD development.
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Affiliation(s)
- Narek Manukjan
- Department of Pharmacology and Toxicology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands; or (W.M.B.)
- CARIM—School for Cardiovascular Diseases, Maastricht University Medical Center+, PO Box 616, 6200 MD Maastricht, The Netherlands
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK; (Z.A.); (D.F.)
| | - Zubair Ahmed
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK; (Z.A.); (D.F.)
| | - Daniel Fulton
- Neuroscience and Ophthalmology, Institute of Inflammation and Ageing, University of Birmingham, Birmingham B15 2TT, UK; (Z.A.); (D.F.)
| | - W. Matthijs Blankesteijn
- Department of Pharmacology and Toxicology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands; or (W.M.B.)
- CARIM—School for Cardiovascular Diseases, Maastricht University Medical Center+, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - Sébastien Foulquier
- Department of Pharmacology and Toxicology, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands; or (W.M.B.)
- CARIM—School for Cardiovascular Diseases, Maastricht University Medical Center+, PO Box 616, 6200 MD Maastricht, The Netherlands
- Department of Neurology, MHeNs—School for Mental Health and Neuroscience, Maastricht University Medical Center+, PO Box 616, 6200 MD Maastricht, The Netherlands
- Correspondence: ; Tel.: +31-43-3881409
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32
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Huang J, Tang J, Zhang Y, Zhang J, Tan Z, Shi S. Association between Ankle Brachial Index, Brachial-Ankle Pulse Wave Velocity, and Mild Cognitive Impairment in Patients with Acute Lacunar Infarction. Eur Neurol 2020; 83:147-153. [PMID: 32570253 DOI: 10.1159/000504844] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 11/15/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND The link between arterial stiffness and mild cognitive impairment (MCI) is receiving increasing attention, and the goal of this study was to explore the relationship among the ankle brachial index (ABI), brachial-ankle pulse wave velocity (Ba-PWV), and MCI in patients with acute lacunar infarction (ALI). METHODS A total of 103 hospitalized patients with ALI were divided into a non-MCI group (n = 41) and an MCI group (n = 62) according to their Montreal Cognitive Assessment (MoCA) scores. A binary logistic regression model was used to assess the association among ABI, Ba-PWV, and MCI after adjusting for confounding factors. Spearman correlation was utilized to analyse the correlations between ABI, Ba-PWV, and MoCA total scores and sub-scores in ALI patients. RESULTS Participants with cognitive impairment had significantly higher Ba-PWV and lower ABI than those with normal cognition. Correlation analysis suggested that Ba-PWV (r = -0.854, p < 0.05) and ABI (r = 0.734, p < 0.05) were correlated with MoCA total scores; of all MoCA sub-scores, visuospatial/executive function was the most strongly correlated with the vascular variables. In the binary logistic regression analysis, Ba-PWV (odds ratio [OR] = 4.507, 95% confidence interval [CI] = 2.152-9.441) and ABI (OR = 1.124, 95% CI = 1.015-1.254) were significantly associated with MCI, even after adjusting for lipoprotein (a) and systolic and diastolic blood pressure. CONCLUSION The present study suggested that a higher Ba-PWV and a lower ABI were independent risk factors for MCI in patients with ALI.
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Affiliation(s)
- Junling Huang
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jian Tang
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Yueling Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jian Zhang
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhong Tan
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Shengliang Shi
- Department of Neurology, The Second Affiliated Hospital of Guangxi Medical University, Nanning, China,
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Papadopoulos A, Palaiopanos K, Protogerou AP, Paraskevas GP, Tsivgoulis G, Georgakis MK. Left Ventricular Hypertrophy and Cerebral Small Vessel Disease: A Systematic Review and Meta-Analysis. J Stroke 2020; 22:206-224. [PMID: 32635685 PMCID: PMC7341009 DOI: 10.5853/jos.2019.03335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/06/2020] [Indexed: 12/30/2022] Open
Abstract
Background and Purpose Left ventricular hypertrophy (LVH) is associated with the risk of stroke and dementia independently of other vascular risk factors, but its association with cerebral small vessel disease (CSVD) remains unknown. Here, we employed a systematic review and meta-analysis to address this gap. Methods Following the MOOSE guidelines (PROSPERO protocol: CRD42018110305), we systematically searched the literature for studies exploring the association between LVH or left ventricular (LV) mass, with neuroimaging markers of CSVD (lacunes, white matter hyperintensities [WMHs], cerebral microbleeds [CMBs]). We evaluated risk of bias and pooled association estimates with random-effects meta-analyses. Results We identified 31 studies (n=25,562) meeting our eligibility criteria. In meta-analysis, LVH was associated with lacunes and extensive WMHs in studies of the general population (odds ratio [OR]lacunes, 1.49; 95% confidence interval [CI], 1.12 to 2.00) (ORWMH, 1.73; 95% CI, 1.38 to 2.17) and studies in high-risk populations (ORlacunes: 2.39; 95% CI, 1.32 to 4.32) (ORWMH, 2.01; 95% CI, 1.45 to 2.80). The results remained stable in general population studies adjusting for hypertension and other vascular risk factors, as well as in sub-analyses by LVH assessment method (echocardiography/electrocardiogram), study design (cross-sectional/cohort), and study quality. Across LV morphology patterns, we found gradually increasing ORs for concentric remodelling, eccentric hypertrophy, and concentric hypertrophy, as compared to normal LV geometry. LVH was further associated with CMBs in high-risk population studies. Conclusions LVH is associated with neuroimaging markers of CSVD independently of hypertension and other vascular risk factors. Our findings suggest LVH as a novel risk factor for CSVD and highlight the link between subclinical heart and brain damage.
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Affiliation(s)
| | | | - Athanasios P Protogerou
- Cardiovascular Prevention and Research Unit, Department of Pathophysiology, National and Kapodistrian University of Athens, Athens, Greece
| | - George P Paraskevas
- Cognitive and Movement Disorders Unit and Unit of Neurochemistry and Biological Markers, First Department of Neurology, Eginition University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Georgios Tsivgoulis
- Second Department of Neurology, Attikon Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.,Department of Neurology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Marios K Georgakis
- Institute for Stroke and Dementia Research, LMU University Hospital, Ludwig-Maximilians-University (LMU), Munich, Germany
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Sasikumar S, Strafella AP. Imaging Mild Cognitive Impairment and Dementia in Parkinson's Disease. Front Neurol 2020; 11:47. [PMID: 32082250 PMCID: PMC7005138 DOI: 10.3389/fneur.2020.00047] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/14/2020] [Indexed: 12/11/2022] Open
Abstract
Cognitive dysfunction is a significant non-motor feature of Parkinson's disease, with the risk of dementia increasing with prolonged disease duration. Multiple cognitive domains are affected, and the pathophysiology cannot be explained by dopaminergic loss alone. Sophisticated neuroimaging techniques can detect the nature and extent of extra-nigral involvement by targeting neurotransmitters, abnormal protein aggregates and tissue metabolism. This review identifies the functional and anatomical imaging characteristics that predict cognitive impairment in PD, the limitations that challenge this process, and the avenues of potential research.
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Affiliation(s)
| | - Antonio P Strafella
- Division of Neurology, University of Toronto, Toronto, ON, Canada.,Morton and Gloria Shulman Movement Disorder Unit & E. J. Safra Parkinson Disease Program, Neurology Division, Department of Medicine, Toronto Western Hospital, UHN, University of Toronto, Toronto, ON, Canada.,Research Imaging Centre, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute, University of Toronto, Toronto, ON, Canada.,Division of Brain, Imaging and Behaviour - Systems Neuroscience, Krembil Research Institute, UHN, University of Toronto, Toronto, ON, Canada
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Scarapicchia V, Garcia-Barrera M, MacDonald S, Gawryluk JR. Resting State BOLD Variability Is Linked to White Matter Vascular Burden in Healthy Aging but Not in Older Adults With Subjective Cognitive Decline. Front Hum Neurosci 2019; 13:429. [PMID: 31920589 PMCID: PMC6936515 DOI: 10.3389/fnhum.2019.00429] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 11/18/2019] [Indexed: 12/16/2022] Open
Abstract
Background: Alzheimer's disease (AD) is the leading cause of dementia. A lack of curative treatments and a rapidly aging global population have amplified the need for early biomarkers of the disease process. Recent advances suggest that subjective cognitive decline (SCD) may be one of the earliest symptomatic markers of the AD cascade. Previous studies have identified changes in variability in the blood-oxygen-level-dependent (BOLD) signal in patients with AD, with a possible association between BOLD variability and cerebrovascular factors in the aging brain. The objective of the current study was to determine whether changes in BOLD variability can be identified in individuals with SCD, and whether this signal may be associated with markers of cerebrovascular integrity in SCD and older adults without memory complaints. Method: Data were obtained from the Alzheimer's Disease Neuroimaging Initiative (ADNI) database from 19 participants with SCD and 19 similarly-aged controls. For each participant, a map of BOLD signal variability (SDBOLD) was computed as the standard deviation of the BOLD time-series at each voxel. Group comparisons were performed to examine differences in resting-state SDBOLD in SCD vs. healthy controls. Relationships were then examined between participant SDBOLD maps and neuroimaging markers of white matter vascular infarcts in each group separately. Results: Between-group comparisons showed no significant differences in whole-brain SDBOLD in individuals with SCD and controls. In the healthy aging group, higher white matter hyperintensity (WMH) burden was associated with greater SDBOLD in right temporal regions (p < 0.05), and lower scores on a measure of global executive functioning. These associations were not identified in individuals with SCD. Conclusion: The current study underscores previous evidence for a relationship between SDBOLD and white matter vascular infarcts in the healthy aging brain. The findings also provide evidence for a dissociable relationship between healthy aging and SCD, such that in healthy controls, increased WMH is associated with declines in executive function that is not observed in older adults who present with memory complaints. Further multimodal work is needed to better understand the contributions of vascular pathology to the BOLD signal, and its potential relationship with pathological aging.
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Affiliation(s)
- Vanessa Scarapicchia
- Department Psychology, University of Victoria, Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, Victoria, BC, Canada
| | - Mauricio Garcia-Barrera
- Department Psychology, University of Victoria, Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, Victoria, BC, Canada
| | - Stuart MacDonald
- Department Psychology, University of Victoria, Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, Victoria, BC, Canada
| | - Jodie R. Gawryluk
- Department Psychology, University of Victoria, Victoria, BC, Canada
- Institute on Aging and Lifelong Health, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
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Bandera A, Taramasso L, Bozzi G, Muscatello A, Robinson JA, Burdo TH, Gori A. HIV-Associated Neurocognitive Impairment in the Modern ART Era: Are We Close to Discovering Reliable Biomarkers in the Setting of Virological Suppression? Front Aging Neurosci 2019; 11:187. [PMID: 31427955 PMCID: PMC6687760 DOI: 10.3389/fnagi.2019.00187] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/10/2019] [Indexed: 11/24/2022] Open
Abstract
The prevalence of the most severe forms of HIV-associated neurocognitive disorders (HAND) is decreasing due to worldwide availability and high efficacy of antiretroviral treatment (ART). However, several grades of HIV-related cognitive impairment persist with effective ART and remain a clinical concern for people with HIV (PWH). The pathogenesis of these cognitive impairments has yet to be fully understood and probably multifactorial. In PWH with undetectable peripheral HIV-RNA, the presence of viral escapes in cerebrospinal fluid (CSF) might explain a proportion of cases, but not all. Many other mechanisms have been hypothesized to be involved in disease progression, in order to identify possible therapeutic targets. As potential indicators of disease staging and progression, numerous biomarkers have been used to characterize and implicate chronic inflammation in the pathogenesis of neuronal injuries, such as certain phenotypes of activated monocytes/macrophages, in the context of persistent immune activation. Despite none of them being disease-specific, the correlation of several CSF cellular biomarkers to HIV-induced neuronal damage has been investigated. Furthermore, recent studies have been evaluating specific microRNA (miRNA) profiles in the CSF of PWH with neurocognitive impairment (NCI). The aim of the present study is to review the body of evidence on different biomarkers use in research and clinical settings, focusing on PWH on ART with undetectable plasma HIV-RNA.
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Affiliation(s)
- Alessandra Bandera
- Infectious Disease Unit, Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milano, Milan, Italy
| | - Lucia Taramasso
- Infectious Disease Unit, Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Infectious Diseases Clinic, Department of Health Sciences, School of Medical and Pharmaceutical Sciences, Policlinico Hospital San Martino, University of Genova (DISSAL), Genova, Italy
| | - Giorgio Bozzi
- Infectious Disease Unit, Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Antonio Muscatello
- Infectious Disease Unit, Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Jake A Robinson
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Tricia H Burdo
- Department of Neuroscience, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, United States
| | - Andrea Gori
- Infectious Disease Unit, Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milano, Milan, Italy
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Low A, Mak E, Rowe JB, Markus HS, O'Brien JT. Inflammation and cerebral small vessel disease: A systematic review. Ageing Res Rev 2019; 53:100916. [PMID: 31181331 DOI: 10.1016/j.arr.2019.100916] [Citation(s) in RCA: 202] [Impact Index Per Article: 40.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/23/2019] [Accepted: 06/05/2019] [Indexed: 12/13/2022]
Abstract
Inflammation is increasingly implicated as a risk factor for dementia, stroke, and small vessel disease (SVD). However, the underlying mechanisms and causative pathways remain unclear. We systematically reviewed the existing literature on the associations between markers of inflammation and SVD (i.e., white matter hyperintensities (WMH), lacunes, enlarged perivascular spaces (EPVS), cerebral microbleeds (CMB)) in cohorts of older people with good health, cerebrovascular disease, or cognitive impairment. Based on distinctions made in the literature, markers of inflammation were classified as systemic inflammation (e.g. C-reactive protein, interleukin-6, fibrinogen) or vascular inflammation/endothelial dysfunction (e.g. homocysteine, von Willebrand factor, Lp-PLA2). Evidence from 82 articles revealed relatively robust associations between SVD and markers of vascular inflammation, especially amongst stroke patients, suggesting that alterations to the endothelium and blood-brain barrier may be a driving force behind SVD. Conversely, cross-sectional findings on systemic inflammation were mixed, although longitudinal investigations demonstrated that elevated levels of systemic inflammatory markers at baseline predicted subsequent SVD severity and progression. Importantly, regional analysis revealed that systemic and vascular inflammation were differentially related to two distinct forms of SVD. Specifically, markers of vascular inflammation tended to be associated with SVD in areas typical of hypertensive arteriopathy (e.g., basal ganglia), while systemic inflammation appeared to be involved in CAA-related vascular damage (e.g., centrum semiovale). Nonetheless, there is insufficient data to establish whether inflammation is causal of, or secondary to, SVD. Findings have important implications on interventions, suggesting the potential utility of treatments targeting the brain endothelium and blood brain barrier to combat SVD and associated neurodegenerative diseases.
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Affiliation(s)
- Audrey Low
- Department of Psychiatry, University of Cambridge, United Kingdom
| | - Elijah Mak
- Department of Psychiatry, University of Cambridge, United Kingdom
| | - James B Rowe
- Department of Clinical Neurosciences, University of Cambridge, United Kingdom
| | - Hugh S Markus
- Department of Clinical Neurosciences, University of Cambridge, United Kingdom
| | - John T O'Brien
- Department of Psychiatry, University of Cambridge, United Kingdom.
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de Havenon A, Meyer C, McNally JS, Alexander M, Chung L. Subclinical Cerebrovascular Disease: Epidemiology and Treatment. Curr Atheroscler Rep 2019; 21:39. [PMID: 31350593 DOI: 10.1007/s11883-019-0799-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE OF REVIEW Subclinical cerebrovascular disease (sCVD) is highly prevalent in older adults. The main neuroimaging findings of sCVD include white matter hyperintensities and silent brain infarcts on T2-weighted MRI and cerebral microbleeds on gradient echo or susceptibility-weighted MRI. In this paper, we will review the epidemiology of sCVD, the current evidence for best medical management, and future directions for sCVD research. RECENT FINDINGS Numerous epidemiologic studies show that sCVD, in particular WMH, is an important risk factor for the development of dementia, stroke, worse outcomes after stroke, gait instability, late-life depression, and death. Effective treatment of sCVD could have major consequences for the brain health of a substantial portion of older Americans. Despite the link between sCVD and many vascular risk factors, such as hypertension or hyperlipidemia, the optimal medical treatment of sCVD remains uncertain. Given the clinical equipoise about the risk versus benefit of aggressive medical management for sCVD, clinical trials to examine pragmatic, evidence-based approaches to management of sCVD are needed. Such a trial could provide much needed guidance on how to manage a common clinical scenario facing internists and neurologists in practice.
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Affiliation(s)
- Adam de Havenon
- Department of Neurology, University of Utah, Salt Lake City, UT, USA.
| | - Chelsea Meyer
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - J Scott McNally
- Department of Radiology, University of Utah, Salt Lake City, UT, USA
| | - Matthew Alexander
- Department of Radiology, University of Utah, Salt Lake City, UT, USA
| | - Lee Chung
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
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Wei Y, Sun Z, Wang Y, Xie Z, Xu S, Xu Y, Zhou X, Bi J, Zhu Z. Methylation in the TP53 promoter is associated with ischemic stroke. Mol Med Rep 2019; 20:1404-1410. [PMID: 31173230 DOI: 10.3892/mmr.2019.10348] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 03/06/2019] [Indexed: 11/05/2022] Open
Abstract
Cerebral ischemic stroke (IS) is a disease presenting high morbidity and mortality rates worldwide. Understanding of the pathogenesis underlying IS may facilitate the development of effective clinical therapeutic strategies and improve the prevention of this disease, decreasing its occurrence rate. Epigenetic alterations have recently attracted attention as possible mechanisms underlying IS. Additionally, tumor protein p53 (TP53) was identified to be involved in the pathophysiology of cerebral stroke. In the present study, the methylation status of the TP53 promoter was investigated in patients with IS and in age‑matched healthy controls. The methylation status of the promoter of TP53 was significantly increased in patients with IS compared with healthy subjects. Additionally, the methylation level of the TP53 promoter was identified to be associated with carotid intima‑media thickness, the degree of carotid atherosclerosis and the circulating levels of homocysteine in peripheral blood. The present findings may improve the understanding of the role of the epigenetic modifications of the TP53 promoter in IS pathogenesis.
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Affiliation(s)
- Yan Wei
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Zhongzheng Sun
- Department of Neurosurgery, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Yun Wang
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Zhaohong Xie
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Shunliang Xu
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Yingying Xu
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Xiaoyan Zhou
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Jianzhong Bi
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Zhengyu Zhu
- Department of Neurology Medicine, Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
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Cannistraro RJ, Badi M, Eidelman BH, Dickson DW, Middlebrooks EH, Meschia JF. CNS small vessel disease: A clinical review. Neurology 2019; 92:1146-1156. [PMID: 31142635 DOI: 10.1212/wnl.0000000000007654] [Citation(s) in RCA: 314] [Impact Index Per Article: 62.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 03/13/2019] [Indexed: 11/15/2022] Open
Abstract
CNS small vessel disease (CSVD) causes 25% of strokes and contributes to 45% of dementia cases. Prevalence increases with age, affecting about 5% of people aged 50 years to almost 100% of people older than 90 years. Known causes and risk factors include age, hypertension, branch atheromatous disease, cerebral amyloid angiopathy, radiation exposure, immune-mediated vasculitides, certain infections, and several genetic diseases. CSVD can be asymptomatic; however, depending on location, lesions can cause mild cognitive dysfunction, dementia, mood disorders, motor and gait dysfunction, and urinary incontinence. CSVD is diagnosed on the basis of brain imaging biomarkers, including recent small subcortical infarcts, white matter hyperintensities, lacunes, cerebral microbleeds, enlarged perivascular spaces, and cerebral atrophy. Advanced imaging modalities can detect signs of disease even earlier than current standard imaging techniques. Diffusion tensor imaging can identify altered white matter connectivity, and blood oxygenation level-dependent imaging can identify decreased vascular reactivity. Pathogenesis is thought to begin with an etiologically specific insult, with or without genetic predisposition, which results in dysfunction of the neurovascular unit. Uncertainties regarding pathogenesis have delayed development of effective treatment. The most widely accepted approach to treatment is to intensively control well-established vascular risk factors, of which hypertension is the most important. With better understanding of pathogenesis, specific therapies may emerge. Early identification of pathologic characteristics with advanced imaging provides an opportunity to forestall progression before emergence of symptoms.
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Affiliation(s)
- Rocco J Cannistraro
- From the Department of Neurology (R.J.C., M.B., B.H.E., J.F.M.), Department of Laboratory Medicine and Pathology (D.W.D.), Department of Neuroscience (D.W.D.), and Department of Radiology (E.H.M.), Mayo Clinic, Jacksonville, FL
| | - Mohammed Badi
- From the Department of Neurology (R.J.C., M.B., B.H.E., J.F.M.), Department of Laboratory Medicine and Pathology (D.W.D.), Department of Neuroscience (D.W.D.), and Department of Radiology (E.H.M.), Mayo Clinic, Jacksonville, FL
| | - Benjamin H Eidelman
- From the Department of Neurology (R.J.C., M.B., B.H.E., J.F.M.), Department of Laboratory Medicine and Pathology (D.W.D.), Department of Neuroscience (D.W.D.), and Department of Radiology (E.H.M.), Mayo Clinic, Jacksonville, FL
| | - Dennis W Dickson
- From the Department of Neurology (R.J.C., M.B., B.H.E., J.F.M.), Department of Laboratory Medicine and Pathology (D.W.D.), Department of Neuroscience (D.W.D.), and Department of Radiology (E.H.M.), Mayo Clinic, Jacksonville, FL
| | - Erik H Middlebrooks
- From the Department of Neurology (R.J.C., M.B., B.H.E., J.F.M.), Department of Laboratory Medicine and Pathology (D.W.D.), Department of Neuroscience (D.W.D.), and Department of Radiology (E.H.M.), Mayo Clinic, Jacksonville, FL
| | - James F Meschia
- From the Department of Neurology (R.J.C., M.B., B.H.E., J.F.M.), Department of Laboratory Medicine and Pathology (D.W.D.), Department of Neuroscience (D.W.D.), and Department of Radiology (E.H.M.), Mayo Clinic, Jacksonville, FL.
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Cross-sectional and longitudinal associations between total and regional white matter hyperintensity volume and cognitive and motor function in Parkinson's disease. NEUROIMAGE-CLINICAL 2019; 23:101870. [PMID: 31150958 PMCID: PMC6543018 DOI: 10.1016/j.nicl.2019.101870] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 05/15/2019] [Accepted: 05/20/2019] [Indexed: 11/21/2022]
Abstract
Background White matter hyperintensities (WMH) are frequently observed on T2-weighted brain magnetic resonance imaging studies of healthy older adults and have been linked with impairments in balance, gait, and cognition. Nonetheless, few studies have investigated the longitudinal effects of comorbid WMH on cognition and motor function in Parkinson's disease. Methods The Lesion Segmentation Tool for Statistical Parametric Mapping was used to obtain total lesion volume and map regional WMH probabilities in 29 PD and 42 control participants at two study visits 18 months apart. Both cross-sectional and longitudinal comparisons were made between composite scores in the domains of executive function, memory, and language, and Unified Parkinson's Disease Rating Scale (UPDRS) scores. Results We found no difference between disease and control groups in total WMH volume or progression during the study. Greater regional and global WMH at baseline was more strongly associated with lower executive function in PD subjects than in controls. Increased regional WMH was also more strongly associated with impaired memory performance in PD relative to controls. Longitudinally, no associations between cognitive change and total or regional WMH progression were detected in either group. A positive relationship between baseline regional WMH and total UPDRS scores was present in the control group, but not PD. However, greater WMH increase was associated with a greater increase in UPDRS motor sub-scores in PD. Conclusions These findings suggest that although PD patients do not experience greater mean WMH load than normal aged adults, comorbid WMH do exacerbate cognitive and motor symptoms in PD. PD patients did not demonstrate greater white matter lesion burden at baseline. PD patients did not have increased white matter lesion accumulation over 18 months. Lesion burden was related to lower executive function and memory in PD patients. Greater total lesion accumulation was associated to worsening motor scores in PD.
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Nam KW, Kwon HM, Kim HL, Lee YS. Left ventricular ejection fraction is associated with small vessel disease in ischaemic stroke patients. Eur J Neurol 2019; 26:747-753. [PMID: 30565350 DOI: 10.1111/ene.13883] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 12/06/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE The purpose was to evaluate the association between the left ventricular ejection fraction (LVEF) and cerebral small vessel disease (cSVD) in ischaemic stroke patients. METHODS Consecutive first-ever ischaemic stroke patients between 2010 and 2013 were included. White matter hyperintensity (WMH) volumes were rated using both the Fazekas score and quantitative methods on fluid-attenuated inversion recovery images. As spectra of cSVD, lacunes, cerebral microbleeds (CMBs) and enlarged perivascular spaces (EPVSs) were also evaluated. To assess the dose-response relationship between LVEF and cSVD, the burdens of each radiological marker and the total cSVD score were rated. RESULTS A total of 841 patients were included [median WMH volume 2.98 (1.22-10.50) ml; the frequencies of lacunes, CMBs and moderate to severe EPVSs were 38%, 31% and 35%, respectively]. In the multivariate analysis about predictors of WMH volumes, the LVEF (B = -0.052, P < 0.001) remained significant after adjusting for confounders. LVEF was also a predictor of lacunes [adjusted odds ratio (aOR) 0.978, P = 0.012], CMBs (aOR = 0.96, P < 0.001) and moderate to severe EPVSs (aOR = 0.94, P < 0.001) after adjusting for their confounders. The LVEF values were negatively correlated with the burdens of lacunes (P = 0.026), CMBs (P < 0.001) and EPVSs (P = 0.002). The total cSVD score also showed a negative association with LVEF in a dose-response manner (P < 0.001). CONCLUSIONS The burden of cSVD is negatively correlated with the LVEF in a dose-response manner. Our results suggest clues for further studies about determining the pathophysiology of cSVD.
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Affiliation(s)
- K-W Nam
- Department of Neurology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea.,Seoul National University College of Medicine, Seoul, Korea
| | - H-M Kwon
- Department of Neurology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea.,Seoul National University College of Medicine, Seoul, Korea
| | - H-L Kim
- Division of Cardiology, Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Y-S Lee
- Department of Neurology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea.,Seoul National University College of Medicine, Seoul, Korea
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Liu Y, Dong YH, Lyu PY, Chen WH, Li R. Hypertension-Induced Cerebral Small Vessel Disease Leading to Cognitive Impairment. Chin Med J (Engl) 2018; 131:615-619. [PMID: 29483399 PMCID: PMC5850681 DOI: 10.4103/0366-6999.226069] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Objective: Alzheimer's disease and vascular dementia are responsible for more than 80% of dementia cases. These two conditions share common risk factors including hypertension. Cerebral small vessel disease (CSVD) is strongly associated with both hypertension and cognitive impairment. In this review, we identify the pathophysiological changes in CSVD that are caused by hypertension and further explore the relationship between CSVD and cognitive impairment. Data Sources: We searched and scanned the PubMed database for recently published literatures up to December 2017. We used the keywords of “hypertension”, “cerebral small vessel disease”, “white matter lesions”, “enlarged perivascular spaces”, “lacunar infarcts”, “cerebral microbleeds”, and “cognitive impairment” in the database of PubMed. Study Selection: Articles were obtained and reviewed to analyze the hypertension-induced pathophysiological changes that occur in CSVD and the correlation between CSVD and cognitive impairment. Results: In recent years, studies have demonstrated that hypertension-related changes (e.g., small vascular lesions, inflammatory reactions, hypoperfusion, oxidative stress, damage to autoregulatory processes and the blood-brain barrier, and cerebral amyloid angiopathy) can occur over time in cerebral small vessels, potentially leading to lower cognitive function when blood pressure (BP) control is poor or lacking. Both isolated and co-occurrent CSVD can lead to cognitive deterioration, and this effect may be attributable to a dysfunction in either the cholinergic system or the functionality of cortical and subcortical tracts. Conclusions: We explore the currently available evidence about the hypertensive vasculopathy and inflammatory changes that occur in CSVD. Both are vital prognostic indicators of the development of cognitive impairment. Future studies should be performed to validate the relationship between BP levels and CSVD progression and between the numbers, volumes, and anatomical locations of CSVD and cognitive impairment.
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Affiliation(s)
- Yang Liu
- Graduate School, Hebei Medical University, Shijiazhuang, Hebei 050017; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei 050051, China
| | - Yan-Hong Dong
- Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei 050051, China
| | - Pei-Yuan Lyu
- Graduate School, Hebei Medical University, Shijiazhuang, Hebei 050017; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei 050051, China
| | - Wei-Hong Chen
- Graduate School, Hebei Medical University, Shijiazhuang, Hebei 050017; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei 050051, China
| | - Rui Li
- Graduate School, Hebei Medical University, Shijiazhuang, Hebei 050017; Department of Neurology, Hebei General Hospital, Shijiazhuang, Hebei 050051, China
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Brown R, Benveniste H, Black SE, Charpak S, Dichgans M, Joutel A, Nedergaard M, Smith KJ, Zlokovic BV, Wardlaw JM. Understanding the role of the perivascular space in cerebral small vessel disease. Cardiovasc Res 2018; 114:1462-1473. [PMID: 29726891 PMCID: PMC6455920 DOI: 10.1093/cvr/cvy113] [Citation(s) in RCA: 189] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/18/2018] [Accepted: 05/02/2018] [Indexed: 12/17/2022] Open
Abstract
Small vessel diseases (SVDs) are a group of disorders that result from pathological alteration of the small blood vessels in the brain, including the small arteries, capillaries and veins. Of the 35-36 million people that are estimated to suffer from dementia worldwide, up to 65% have an SVD component. Furthermore, SVD causes 20-25% of strokes, worsens outcome after stroke and is a leading cause of disability, cognitive impairment and poor mobility. Yet the underlying cause(s) of SVD are not fully understood. Magnetic resonance imaging has confirmed enlarged perivascular spaces (PVS) as a hallmark feature of SVD. In healthy tissue, these spaces are proposed to form part of a complex brain fluid drainage system which supports interstitial fluid exchange and may also facilitate clearance of waste products from the brain. The pathophysiological signature of PVS and what this infers about their function and interaction with cerebral microcirculation, plus subsequent downstream effects on lesion development in the brain has not been established. Here we discuss the potential of enlarged PVS to be a unique biomarker for SVD and related brain disorders with a vascular component. We propose that widening of PVS suggests presence of peri-vascular cell debris and other waste products that form part of a vicious cycle involving impaired cerebrovascular reactivity, blood-brain barrier dysfunction, perivascular inflammation and ultimately impaired clearance of waste proteins from the interstitial fluid space, leading to accumulation of toxins, hypoxia, and tissue damage. Here, we outline current knowledge, questions and hypotheses regarding understanding the brain fluid dynamics underpinning dementia and stroke through the common denominator of SVD.
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Affiliation(s)
- Rosalind Brown
- Centre for Clinical Brain Sciences, The University of Edinburgh, Chancellor's Building, Edinburgh, UK
| | - Helene Benveniste
- Department of Anesthesiology, Yale School of Medicine, New Haven, USA
| | - Sandra E Black
- LC Campbell Cognitive Neurology Research Unit, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
- Department of Medicine (Neurology), Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
- Hurvitz Brain Sciences Program, Sunnybrook Health Sciences Center, University of Toronto, Toronto, Canada
- Heart and Stroke Foundation Canadian Partnership for Stroke Recovery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
| | - Serge Charpak
- INSERM U1128, Laboratory of Neurophysiology and New Microscopies, Université Paris Descartes, Paris, France
| | - Martin Dichgans
- Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE, Munich), Munich, Germany
- Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Anne Joutel
- Genetics and Pathogenesis of Cerebrovascular Diseases, INSERM, Université Paris Diderot-Paris 7, Paris, France
- DHU NeuroVasc, Sorbonne Paris Cité, Paris, France
| | - Maiken Nedergaard
- Section for Translational Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Division of Glia Disease and Therapeutics, Center for Translational Neuromedicine, University of Rochester Medical School, Rochester, USA
| | - Kenneth J Smith
- Department of Neuroinflammation, UCL Institute of Neurology, London, UK
| | - Berislav V Zlokovic
- Zilkha Neurogenetic Institute, Keck School of Medicine, University of Southern California, Los Angeles, USA
- Department of Physiology and Neuroscience, Keck School of Medicine, University of Southern California, Los Angeles, USA
| | - Joanna M Wardlaw
- Centre for Clinical Brain Sciences, Chancellor's Building, Edinburgh, UK
- UK Dementia Research Institute at The University of Edinburgh, Chancellor's Building, Edinburgh, UK
- Row Fogo Centre for Research into Ageing and the Brain, The University of Edinburgh, Chancellor's Building, Edinburgh, UK
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Kwak MS, Kim KW, Seo H, Chung GE, Yim JY, Kim D. Non-obese fatty liver disease is associated with lacunar infarct. Liver Int 2018; 38:1292-1299. [PMID: 29220869 DOI: 10.1111/liv.13663] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 12/01/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND/AIMS Lacunar infarct, a small subcortical ischaemic lesion, is a known risk factor for future cognitive impairment, dementia and stroke. We evaluated the relationship between fatty liver disease (FLD) and lacunar infarct in a healthy general population. METHODS Subjects who underwent brain magnetic resonance imaging (MRI) and abdominal ultrasonography (US) during health check-ups from 2007 to 2009 were included. FLD was diagnosed by US. Subjects with a history of cerebrovascular disease, radiological findings consistent with cerebrovascular stenosis or cerebral small vessel disease were excluded. RESULTS Of the 1277 subjects, 54 (4.2%) exhibited lacunar infarct, and 514 (40.3%) had FLD. Subjects with lacunar infarct had a higher prevalence of FLD (59.3% vs 39.4%, P = .004). There was significant interaction between obesity (BMI < 25 kg/m2 vs ≥ 25 kg/m2 ) and FLD for lacunar infarct (P for interaction = .024). Subgroup analysis revealed that non-obese FLD was more common in the subjects with lacunar infarct than those without (51.7% vs 23.5%, P = .001). However, there was no significant difference in the obese FLD prevalence between these 2 groups. In multivariate models adjusted by age, sex, smoking, alcohol, hypertension and diabetes, FLD was significantly associated with lacunar infarct (odds ratio [OR] 1.97; 95% confidence interval [CI] 1.08-3.58; P = .027). Non-obese FLD was associated with lacunar infarct (OR 3.58; 95% CI 1.63-7.89; P = .002); however, this association remained insignificant in obese FLD. Instead, ageing and hypertension were independent risk factors for lacunar infarct in the obese population. CONCLUSIONS FLD is significantly associated with lacunar infarct, independent of traditional risk factors. This association was prominent in the non-obese population.
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Affiliation(s)
- Min-Sun Kwak
- Department of Internal Medicine, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - Kyung Won Kim
- Department of Internal Medicine, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - Hyobin Seo
- Department of Radiology, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.,Health Promotion Center, Korea University Anam Hospital, Seoul, Korea
| | - Goh-Eun Chung
- Department of Internal Medicine, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - Jeong Yoon Yim
- Department of Internal Medicine, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - Donghee Kim
- Department of Internal Medicine, Healthcare Research Institute, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.,Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, USA
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Heiss WD. The Additional Value of PET in the Assessment of Cerebral Small Vessel Disease. J Nucl Med 2018; 59:1660-1664. [DOI: 10.2967/jnumed.118.214270] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 06/11/2018] [Indexed: 11/16/2022] Open
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Xu X, Gao Y, Liu R, Qian L, Chen Y, Wang X, Xu Y. Progression of White Matter Hyperintensities Contributes to Lacunar Infarction. Aging Dis 2018; 9:444-452. [PMID: 29896432 PMCID: PMC5988599 DOI: 10.14336/ad.2017.0808] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 08/08/2017] [Indexed: 01/11/2023] Open
Abstract
Both white matter hyperintensities (WMHs) and lacunar infarctions (LIs) are magnetic resonance imaging (MRI) markers of cerebral small vessel disease (SVD). However, the association between WMH and LI remains unclear. In this study, we asked whether WMH progression is related to LI occurrence using retrospective data. Overall, 8475 WMH patients with at least two MRI images were screened, and 187 patients were included in the final study; 76 patients had WMH with LI (WL), and 111 patients had WMH without LI (WOL). The 187 patients were divided into three groups according to WMH progression: Group 1 (no progression), Group 2 (0-53.64% WMH progression) and Group 3 (≥53.64% WMH progression). We found that both WMH volumes and Fazekas scores were higher in WL patients compared with those in WOL patients according to the 1st and 2nd MRI images (P<0.001), whereas WMH progression was not significantly different between these two groups (P>0.05). Importantly, we found that the occurrence rates for LI were increased in Groups 2 and 3 compared with those in Group 1. Multiple logistic regression analysis demonstrated that the risk of LI occurrence was significantly increased in Group 2 versus that in Group 1 (odds ratio, 3.36; 95% CI, 1.48 to 7.67; P=0.004) after adjusting for the baseline patient characteristics and the interval between the two MRI scans. Additionally, with a stratification time of less than 24 months, the risk of LI occurrence was higher in Group 2 versus that in Group 1, after adjusting for baseline confounding factors (odds ratio, 3.68; 95% CI, 1.51 to 8.99; P=0.004). In conclusion, we found that WMH progression was significantly associated with LI occurrence, particularly within the first two years, and that this progression could serve as an independent indicator of LI development.
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Affiliation(s)
- Xin Xu
- 1Department of Neurology, Affiliated Drum Tower Hospital, and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing 210008, China.,2Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,3Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Yuanyuan Gao
- 1Department of Neurology, Affiliated Drum Tower Hospital, and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing 210008, China.,2Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,3Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Renyuan Liu
- 1Department of Neurology, Affiliated Drum Tower Hospital, and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing 210008, China.,2Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,3Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Lai Qian
- 1Department of Neurology, Affiliated Drum Tower Hospital, and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing 210008, China.,2Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,3Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Yan Chen
- 1Department of Neurology, Affiliated Drum Tower Hospital, and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing 210008, China.,2Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,3Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
| | - Xiaoying Wang
- 4Departments of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Yun Xu
- 1Department of Neurology, Affiliated Drum Tower Hospital, and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing 210008, China.,2Jiangsu Province Stroke Center for Diagnosis and Therapy, Nanjing 210008, China.,3Nanjing Neuropsychiatry Clinic Medical Center, Nanjing 210008, China
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Kim BJ, Lee EJ, Kwon SU, Park JH, Kim YJ, Hong KS, Wong LKS, Yu S, Hwang YH, Lee JS, Lee J, Rha JH, Heo SH, Ahn SH, Seo WK, Park JM, Lee JH, Kwon JH, Sohn SI, Jung JM, Navarro JC, Kang DW, Kwon SU, Lee J, Kang DW, Rha JH, Park JM, Lee YS, Lee JH, Kim YJ, Hong KS, Yu KH, Sohn SI, Ahn SH, Cha JK, Park MS, Kim JS, Yoon BW, Lee BC, Nam CM, Koo JS, Nam HS, Park KY, Park JM, Lee JH, Kim DH, Rha JH, Nah HW, Lee YS, Cho YJ, Kim DE, Han MK, Lee KB, Heo SH, Heo JH, Kim BJ, Cho KH, Kim HY, Kim YD, Cho AH, Lee KY, Lee JS, Park JH, Seo WK, Kim EG, Koh IS, Choi NC, Kwon JH, Lee J, Hwang YH, Song HJ, Shin BS, Kim JT, Lee SJ, Chung PW, Kim SH, Lee JH, Shin DI, Do JK, Lee SB, Lee YB, Yoo BG, Sung SM, Jung JM, Park JW, Lee TK, Navarro JC, San Jos MCZ, Roxas A, Mallarl-Alvarez RJ, Collantes MEV, WONG LK, Fong WC, Tsoi TH, Ng PW, Lee EJ, Lee JS. Prevention of cardiovascular events in Asian patients with ischaemic stroke at high risk of cerebral haemorrhage (PICASSO): a multicentre, randomised controlled trial. Lancet Neurol 2018; 17:509-518. [DOI: 10.1016/s1474-4422(18)30128-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/22/2018] [Accepted: 03/22/2018] [Indexed: 12/18/2022]
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Tsai HH, Kim JS, Jouvent E, Gurol ME. Updates on Prevention of Hemorrhagic and Lacunar Strokes. J Stroke 2018; 20:167-179. [PMID: 29886717 PMCID: PMC6007298 DOI: 10.5853/jos.2018.00787] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/16/2018] [Accepted: 05/23/2018] [Indexed: 12/22/2022] Open
Abstract
Intracerebral hemorrhage (ICH) and lacunar infarction (LI) are the major acute clinical manifestations of cerebral small vessel diseases (cSVDs). Hypertensive small vessel disease, cerebral amyloid angiopathy, and hereditary causes, such as Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL), constitute the three common cSVD categories. Diagnosing the underlying vascular pathology in these patients is important because the risk and types of recurrent strokes show significant differences. Recent advances in our understanding of the cSVD-related radiological markers have improved our ability to stratify ICH risk in individual patients, which helps guide antithrombotic decisions. There are general good-practice measures for stroke prevention in patients with cSVD, such as optimal blood pressure and glycemic control, while individualized measures tailored for particular patients are often needed. Antithrombotic combinations and anticoagulants should be avoided in cSVD treatment, as they increase the risk of potentially fatal ICH without necessarily lowering LI risk in these patients. Even when indicated for a concurrent pathology, such as nonvalvular atrial fibrillation, nonpharmacological approaches should be considered in the presence of cSVD. More data are emerging regarding the presentation, clinical course, and diagnostic markers of hereditary cSVD, allowing accurate diagnosis, and therefore, guiding management of symptomatic patients. When suspicion for asymptomatic hereditary cSVD exists, the pros and cons of prescribing genetic testing should be discussed in detail in the absence of any curative treatment. Recent data regarding diagnosis, risk stratification, and specific preventive approaches for both sporadic and hereditary cSVDs are discussed in this review article.
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Affiliation(s)
- Hsin-Hsi Tsai
- Department of Neurology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Neurology, National Taiwan University Hospital Bei-Hu Branch, Taipei, Taiwan
| | - Jong S Kim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Eric Jouvent
- Department of Neurology, University Paris Diderot, Paris, France
| | - M Edip Gurol
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Mimenza-Alvarado A, Aguilar-Navarro SG, Yeverino-Castro S, Mendoza-Franco C, Ávila-Funes JA, Román GC. Neuroimaging Characteristics of Small-Vessel Disease in Older Adults with Normal Cognition, Mild Cognitive Impairment, and Alzheimer Disease. Dement Geriatr Cogn Dis Extra 2018; 8:199-206. [PMID: 29928288 PMCID: PMC6006607 DOI: 10.1159/000488705] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 03/23/2018] [Indexed: 11/19/2022] Open
Abstract
Introduction Cerebral small-vessel disease (SVD) represents the most frequent type of vascular brain lesions, often coexisting with Alzheimer disease (AD). By quantifying white matter hyperintensities (WMH) and hippocampal and parietal atrophy, we aimed to describe the prevalence and severity of SVD among older adults with normal cognition (NC), mild cognitive impairment (MCI), and probable AD and to describe associated risk factors. Methods This study included 105 older adults evaluated with magnetic resonance imaging and clinical and neuropsychological tests. We used the Fazekas scale (FS) for quantification of WMH, the Scheltens scale (SS) for hippocampal atrophy, and the Koedam scale (KS) for parietal atrophy. Logistic regression models were performed to determine the association between FS, SS, and KS scores and the presence of NC, MCI, or probable AD. Results Compared to NC subjects, SVD was more prevalent in MCI and probable AD subjects. After adjusting for confounding factors, logistic regression showed a positive association between higher scores on the FS and probable AD (OR = 7.6, 95% CI 2.7–20, p < 0.001). With the use of the SS and KS (OR = 4.5, 95% CI 3.5–58, p = 0.003 and OR = 8.9, 95% CI 1–72, p = 0.04, respectively), the risk also remained significant for probable AD. Conclusions These results suggest an association between severity of vascular brain lesions and neurodegeneration.
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Affiliation(s)
- Alberto Mimenza-Alvarado
- Department of Geriatric Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Sara G Aguilar-Navarro
- Department of Geriatric Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - Sara Yeverino-Castro
- Department of Geriatric Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - César Mendoza-Franco
- Department of Geriatric Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - José Alberto Ávila-Funes
- Department of Geriatric Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico.,University of Bordeaux, Inserm, Bordeaux Population Health Research Center, UMR 1219, Bordeaux, France
| | - Gustavo C Román
- Department of Neurology, Methodist Neurological Institute, Houston Methodist Hospital, Houston, Texas, USA
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