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Oge DD, Topcuoglu MA, Gultekin Zaim OB, Gumeler E, Arsava EM. The relationship between bone health and type of intracranial internal carotid calcifications in patients with ischemic stroke. Clin Neurol Neurosurg 2024; 243:108360. [PMID: 38833808 DOI: 10.1016/j.clineuro.2024.108360] [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: 02/13/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 06/06/2024]
Abstract
INTRODUCTION Vascular calcifications, primarily in the aorta and its proximal branches, are commonly observed among subjects with impaired bone health. In this study, we sought to determine if a comparable association holds true for the calcifications in the intracranial internal carotid arteries (IICA), in general and also for particular calcification patterns. METHODS A consecutive series of ischemic stroke patients were prospectively enrolled into the study, where computed tomography angiography source images were used to determine the presence and type of IICA calcifications, and dual-energy X-ray absorptiometry was used to determine the bone mineral density in the left femoral neck region. IICA calcifications were categorized as none, intimal, medial, and mixed types based on previously validated classification schemes. Their relationships with femoral bone T-scores were evaluated by bivariate and multivariate analyses. RESULTS Femoral neck T-score was highest among patients without any vascular calcifications (n=65), when compared to the bone density measures among patients with any type of calcification (n=185) (p<0.001). After adjustment for age, gender, vascular risk factors, and serum biomarkers related to bone health, the T-score remained significantly associated only with the pattern of intimal calcification [OR 0.63 (0.42 - 0.95), p=0.028]. CONCLUSIONS Our findings suggest that the intracranial vasculature, in particular the internal carotid arteries, is not immune to the interplay between suboptimal bone health and vascular calcifications. This association was most robust for an intimal type of IICA calcification pattern, while no such relationship could be demonstrated for other types of vascular calcifications.
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Affiliation(s)
- Dogan Dinc Oge
- Department of Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | | | | | - Ekim Gumeler
- Department of Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ethem Murat Arsava
- Department of Neurology, Faculty of Medicine, Hacettepe University, Ankara, Turkey.
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2
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Nelson J, Vaddi A, Tadinada A. Can convolutional neural networks identify external carotid artery calcifications? Oral Surg Oral Med Oral Pathol Oral Radiol 2024; 138:142-148. [PMID: 37633789 DOI: 10.1016/j.oooo.2023.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/26/2022] [Accepted: 01/31/2023] [Indexed: 08/28/2023]
Abstract
OBJECTIVE We developed and evaluated the accuracy and reliability of a convolutional neural network (CNN) in detecting external carotid artery calcifications (ECACs) in cone beam computed tomography scans. STUDY DESIGN Using TensorFlow, we developed a program to identify calcification in 427 cone beam computed tomography scans evaluated to determine the presence of ECACs. We compared the results to the findings of a human evaluator. Using an 80:20 training-to-validation ratio, we calculated the k-fold cross-validation accuracy of the initial dataset and extrapolated the F1 score and Matthews Correlation Coefficient. RESULTS We calculated a k-fold cross-validation accuracy of 76%, with a recall and precision of 66% and 79%, respectively, and a combined F1 score of 0.72. We extrapolated a Matthews correlation coefficient of 0.53, showing a strong balance between confusion matrix categories. CONCLUSION Our CNN model can reliably identify ECACs in cone beam computed tomography scans.
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Affiliation(s)
- John Nelson
- Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA
| | - Anusha Vaddi
- Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA
| | - Aditya Tadinada
- Section of Oral and Maxillofacial Radiology, Division of Oral and Maxillofacial Diagnostic Sciences, UConn School of Dental Medicine, UConn Health, Farmington, CT, USA.
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Dulam V, Katta S, Nakka VP. Stroke and Distal Organ Damage: Exploring Brain-Kidney Crosstalk. Neurochem Res 2024; 49:1617-1627. [PMID: 38376748 DOI: 10.1007/s11064-024-04126-8] [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: 12/17/2023] [Revised: 02/11/2024] [Accepted: 02/13/2024] [Indexed: 02/21/2024]
Abstract
Stroke and kidney dysfunction represent significant public health challenges, yet the precise mechanisms connecting these conditions and their severe consequences remain unclear. Individuals experiencing chronic kidney disease (CKD) and acute kidney injury (AKI) are at heightened susceptibility to experiencing repeated strokes. Similarly, a reduced glomerular filtration rate is associated with an elevated risk of suffering a stroke. Prior strokes independently contribute to mortality, end-stage kidney disease, and cardiovascular complications, underscoring the pathological connection between the brain and the kidneys. In cases of AKI, various mechanisms, such as cytokine signaling, leukocyte infiltration, and oxidative stress, establish communication between the brain and the kidneys. The bidirectional relationship between stroke and kidney pathologies involves key factors such as uremic toxins, proteinuria, inflammatory responses, decreased glomerular filtration, impairment of the blood-brain barrier (BBB), oxidative stress, and metabolites produced by the gut microbiota. This review examines potential mechanisms of brain-kidney crosstalk underlying stroke and kidney diseases. It holds significance for comprehending multi-organ dysfunction associated with stroke and for formulating therapeutic strategies to address stroke-induced kidney dysfunction and the bidirectional pathological connection between the kidney and stroke.
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Affiliation(s)
- Vandana Dulam
- Department of Biochemistry, Acharya Nagarjuna University, Andhra Pradesh, 522510, India
| | - Sireesha Katta
- Department of Biochemistry, Acharya Nagarjuna University, Andhra Pradesh, 522510, India
| | - Venkata Prasuja Nakka
- Department of Biochemistry, Acharya Nagarjuna University, Andhra Pradesh, 522510, India.
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Huang Y, Feng X, Fan H, Luo J, Wang Z, Yang Y, Yang W, Zhang W, Zhou J, Yuan Z, Xiong Y. Circulating miR-423-5p levels are associated with carotid atherosclerosis in patients with chronic kidney disease. Nutr Metab Cardiovasc Dis 2024; 34:1146-1156. [PMID: 38220508 DOI: 10.1016/j.numecd.2023.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 12/12/2023] [Accepted: 12/20/2023] [Indexed: 01/16/2024]
Abstract
BACKGROUND AND AIMS Carotid atherosclerosis is associated with an elevated risk of stroke in patients with chronic kidney disease. However, the molecular basis for the incidence of carotid atherosclerosis in patients with CKD is poorly understood. Here, we investigated whether circulating miR-423-5p is a crucial link between CKD and carotid atherosclerosis. METHODS AND RESULTS We recruited 375 participants for a cross-sectional study to examine the occurrence of carotid plaque and plaque thicknesses. Levels of miR-423-5p were determined by qPCR analysis. We found that non-dialysis CKD patients had higher circulating exosomal and plasma miR-423-5p levels, and dialysis-dependent patients had lower miR-423-5p levels than non-dialysis CKD patients. After excluding for the influence of dialysis patients, linear regression analysis indicated that levels of circulating miR-423-5p are negatively correlated with eGFR (P < 0.001). Higher plasma miR-423-5p levels were associated with the incidence and severity of carotid plaques. In parallel, we constructed a murine model of CKD with a 5/6 nephrectomy protocol and performed RNA sequencing studies of aortic tissues. Consistent with these findings in CKD patients, circulating exosomal miR-423-5p levels in CKD mice were elevated. Furthermore, our RNA-seq studies indicated that the putative target genes of miR-423-5p were related to oxidative stress functions for aorta of CKD mice. CONCLUSION Levels of miR-423-5p are associated with the presence and severity of carotid plaque in CKD. Data from our mouse model suggests that miR-423-5p likely influences gene expression programs related to oxidative stress in aorta of CKD mice.
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Affiliation(s)
- Yuzhi Huang
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Xueying Feng
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Heze Fan
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Jian Luo
- Health Management Center, Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, Shaanxi, China
| | - Zihao Wang
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Yuxuan Yang
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Wenbo Yang
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Wenjiao Zhang
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Juan Zhou
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China
| | - Zuyi Yuan
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China.
| | - Ying Xiong
- Cardiovascular Department, First Affiliated Hospital of Xi'an Jiao Tong University, Xi'an, 710061, China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, 710061, China.
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Richerson WT, Meier TB, Cohen AD, Wang Y, Goodman MJ, Schmit BD, Wolfgram DF. Cerebrovascular Function is Altered in Hemodialysis Patients. KIDNEY360 2023; 4:1717-1725. [PMID: 37962988 PMCID: PMC10758518 DOI: 10.34067/kid.0000000000000292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/19/2023] [Indexed: 11/16/2023]
Abstract
Key Points Hemodialysis patients have impaired cerebrovascular reactivity. Hemodialysis patients have cerebral structural deficits. Background Hemodialysis patients have declines in cerebral blood flow (CBF) and cerebral oxygenation during hemodialysis that may lead to ischemic brain injury. Cerebrovascular reactivity (CVR) may indicate which individuals are more susceptible to intradialytic hypoperfusion and ischemia. We hypothesized that hemodialysis patients would have decreased CVR and increased CBF relative to controls and deficits in CVR would be related to brain structural deficits. Methods We measured cortical thickness and white matter hyperintensity (WMH) volume from T1 and T2 fluid attenuation inversion recovery images, respectively; CVR from a breath hold blood oxygen level–dependent CVR functional magnetic resonance imaging (fMRI); and arterial transit time and CBF from arterial spin labeling. Cerebrovascular and structural deficits in gray matter and white matter (GM and WM) were tested by averaging across the tissue and with a pothole analysis. Finally, we correlated cortical thickness and WMH volume with GM and WM cerebrovascular variables to assess the relationship between brain structure and cerebrovascular health. Results In ten hemodialysis patients, cortical thickness was found to be decreased (P = 0.002), WMH volume increased (P = 0.004), and WM CBF increased (P = 0.02) relative to ten controls. Pothole analysis indicated a higher number of increased GM and WM CBF voxels (P = 0.03, P = 0.02) and a higher number of decreased GM and WM CVR voxels (P = 0.02, P = 0.01). Conclusions This pilot study demonstrates that hemodialysis patients have decreased CVR and increased CBF relative to controls, along with reduced brain integrity. Further investigation is required to fully understand whether these cerebrovascular deficits may lead to structural changes.
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Affiliation(s)
- Wesley T. Richerson
- Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Timothy B. Meier
- Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Alexander D. Cohen
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Yang Wang
- Department of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | | | - Brian D. Schmit
- Department of Biomedical Engineering, Marquette University and Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Dawn F. Wolfgram
- Department of Medicine, Medical College of Wisconsin, Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin
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Fanadka F, Rozenberg I, Nacasch N, Einbinder Y, Benchetrit S, Wand O, Hod T, Cohen-Hagai K. Intra-Cranial Arterial Calcifications in Hemodialysis Patients. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1706. [PMID: 37893424 PMCID: PMC10608215 DOI: 10.3390/medicina59101706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/06/2023] [Accepted: 09/20/2023] [Indexed: 10/29/2023]
Abstract
Background and objectives: Vascular calcification is an integral part of atherosclerosis and has been reported to be an independent risk factor for cardiovascular diSsease. Intra Cranial Arterial Calcifications (ICAC) in maintenance hemodialysis (MHD) is highly prevalent. Materials and Methods: The aim of this retrospective study was to assess the predictors and outcomes of ICAC in MHD patients compared to a control group without kidney disease. A blinded neuroradiologist graded ICAC in brain imaging (computerized tomography) of MHD patients. Age- and sex-matched patients with normal kidney function served as the control group. Results: A total of 280 patients were included in the cohort; 140 of them were MHD patients with a mean ICAC score of 2.3 ± 0.2 versus a mean ICAC score of 1.4 ± 0.2 in the control group (p < 0.01). More than 90% of hemodialysis patients in our study had some degree of ICAC. Lower albumin and higher phosphorus and CRP levels were associated with increased ICACs. The multivariate analysis model for predictors of 1-year mortality demonstrated an increased odds ratio for mortality as the ICAC score increased. Conclusions: ICAC is very prevalent among MHD patients and results not simply from passive deposition of calcium and phosphate but rather from complex and active processes involving inflammation and structural changes in blood vessels. ICAC independently predicted all-cause mortality and may help with risk stratification of this high-risk population.
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Affiliation(s)
- Feda Fanadka
- Department of Radiology, Meir Medical Center, Kfar Saba 4428164, Israel;
| | - Ilan Rozenberg
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba 4428164, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Naomi Nacasch
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba 4428164, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Yael Einbinder
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba 4428164, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Sydney Benchetrit
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba 4428164, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Ori Wand
- Pulmonary Division, Barzilai Medical Center, Ashkelon 7830604, Israel
| | - Tammy Hod
- Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
- Department of Nephrology and Hypertension, Sheba Medical Center, Ramat Gan 5262000, Israel
| | - Keren Cohen-Hagai
- Department of Nephrology and Hypertension, Meir Medical Center, Kfar Saba 4428164, Israel
- Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
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Adarsh KM, Pavithra H, Abdul Rasheed V. Vertebrobasilar Artery Calcification as a Risk Factor for the Development of Stroke: Case-Control Study From a Tertiary Care Center, Southern India. Cureus 2023; 15:e42196. [PMID: 37605701 PMCID: PMC10440145 DOI: 10.7759/cureus.42196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/20/2023] [Indexed: 08/23/2023] Open
Abstract
Background Stroke is an important cause of morbidity and mortality in developing countries. Many risk factors are well-established for the development of stroke. Atherosclerosis involving the media and intima layer of vertebrobasilar arteries has not been studied well as a risk factor for stroke. Objective To assess the degree of calcification of vertebrobasilar arteries among patients with stroke (cases), age- and gender-matched controls, and the risk of the development of stroke. Methods This was a hospital record-based case-control study with individuals with stroke as cases and age- and gender-matched individuals without stroke as controls, who underwent computed tomography imaging. The degree of calcification of vertebrobasilar arteries was assessed among cases and controls. Various other risk factors for the development of stroke such as the presence of hypertension, diabetes mellitus, and impaired lipid profile were also assessed. Results Among the 150 cases and their age- and gender-matched controls, the mean age of the subjects was 58.38 (±14.06) years. Forty percent of the individuals were males. Among the cases, right vertebral, left vertebral, and basilar artery calcifications were observed among 114 (76%), 102 (68%), and 52 (34.7%), respectively. Among controls, 71 (47.3%), 77 (51.3%), and 29 (19.3%) individuals had right vertebral, left vertebral, and basilar artery calcifications, respectively. The degree of calcification was higher among the cases in the right and left vertebral arteries than the controls (adjusted odds (aOR) of 6.61 and 2.32 and p-value <0.001 and 0.032, respectively). The risk of stroke increased with higher degrees of calcification, the presence of diabetes mellitus, and raised cholesterol levels (aOR of 9.98, 2.32, and 4 and p-value <0.001, 0.007, and 0.001, respectively). The risk of stroke increases with the presence of multiple risk factors. Conclusion The presence of higher grades of calcifications in the vertebrobasilar arteries is a major risk factor for stroke. Hence, its presence in asymptomatic individuals needs to be taken as a warning sign for the development of stroke.
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Affiliation(s)
- Kibballi M Adarsh
- Radiodiagnosis and Medical Imaging, Yenepoya Medical College Hospital, Mangaluru, IND
| | - H Pavithra
- Community Medicine, Yenepoya Medical College, Mangaluru, IND
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Jahansooz JR, Ko A, Hiroi R, Matsunaga M, Carrazana E, Viereck J. Correlation Between Intracranial Calcification and Extracranial Stenosis of the Internal Carotid Artery. Cureus 2023; 15:e40234. [PMID: 37435270 PMCID: PMC10332851 DOI: 10.7759/cureus.40234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2023] [Indexed: 07/13/2023] Open
Abstract
Intracranial artery calcification is a marker of vascular atherosclerosis and has a high prevalence worldwide. Both atherosclerosis of the internal carotid artery at the carotid sinus in the neck and intracranial calcification have been associated with ischemic stroke. The relationship between the two has not been well studied. The present study investigated how carotid sinus narrowing could relate to calcification located in the distal intracranial artery at the cavernous carotid. We examined a population not selected for cerebral disease. This retrospective study contained 179 subjects aged 18 years and older from the Hawaii Diagnostic Radiology database. Extracranial internal carotid artery stenosis was determined using the absolute diameter, North American Symptomatic Carotid Endarterectomy Trial, and common carotid artery methods. Calcification was scored using the modified Woodcock method. A positive correlation between intracranial calcification and extracranial carotid stenosis was found using all three methods. Individuals with intracranial calcification were more likely to be older, have a smaller internal carotid artery diameter, and have a greater percent stenosis at the internal carotid artery than those without intracranial artery calcification (p<0.001 for all). These results may help refocus interest in calcification in studies of cerebral vasculature and its correlation with extracranial carotid stenosis.
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Affiliation(s)
- Julia R Jahansooz
- Neurology, John A. Burns School of Medicine, Honolulu, USA
- Brain Research, Innovation & Translation Laboratory, Hawaii Pacific Neuroscience, Honolulu, USA
| | - Andrew Ko
- Neurology, John A. Burns School of Medicine, Honolulu, USA
- Brain Research, Innovation & Translation Laboratory, Hawaii Pacific Neuroscience, Honolulu, USA
| | - Ryoko Hiroi
- Neurology, John A. Burns School of Medicine, Honolulu, USA
- Brain Research, Innovation & Translation Laboratory, Hawaii Pacific Neuroscience, Honolulu, USA
| | - Masako Matsunaga
- Quantitative Health Sciences, John A. Burns School of Medicine, Honolulu, USA
| | - Enrique Carrazana
- Neurology, John A. Burns School of Medicine, Honolulu, USA
- Brain Research, Innovation & Translation Laboratory, Hawaii Pacific Neuroscience, Honolulu, USA
| | - Jason Viereck
- Brain Research, Innovation & Translation Laboratory, Hawaii Pacific Neuroscience, Honolulu, USA
- Quantitative Health Sciences, John A. Burns School of Medicine, Honolulu, USA
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Li X, Du H, Li J, Li X, Gao Q, Chen X. Cerebral Arterial Stiffness as Measured Based on the Pulse Wave Velocity is Associated With Intracranial Artery Calcification in Patients With Acute Stroke. J Clin Neurol 2023:19.e24. [PMID: 36929059 DOI: 10.3988/jcn.2022.0209] [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: 05/28/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 03/15/2023] Open
Abstract
BACKGROUND AND PURPOSE By measuring a newly defined parameter, the carotid-cerebral pulse wave velocity (ccPWV), this study aimed to determine the association of intracranial artery calcification (IAC) with arterial stiffness as reflected by the pulse wave velocity between the carotid and middle cerebral arteries using transcranial Doppler sonography in patients with acute stroke. METHODS We recruited 146 patients with ischemic stroke from our stroke center. Computed tomography of the head was used to assess the presence and severity of IAC. Arterial stiffness was evaluated using ccPWV. Data are presented as quartiles of ccPWV. A multivariable logistic regression model was used to assess the independent relationship between ccPWV and IAC. RESULTS The IAC prevalence increased with the ccPWV quartile, being 54%, 76%, 83%, and 89% for quartiles 1, 2, 3, and 4, respectively (p<0.001) as did IAC scores, with median [interquartile range] values of 0 [0-2], 3 [2-4], 4 [2-5], and 5 [4-6], respectively (p<0.001). After additionally adjusting for age and hypertension, a significant correlation was only found between quartiles 3 and 4 of ccPWV and IAC scores. The odds ratio (95% confidence interval) for the IAC scores was 1.78 (1.28-2.50) (p=0.001) in quartile 4 of ccPWV and 1.45 (1.07-1.95) (p=0.015) in quartile 3 compared with quartile 1. CONCLUSIONS We found that in patients with acute ischemic stroke, ccPWV was positively related to the degree of IAC. Future longitudinal cohort studies may help to identify the potential role of IAC in the progression of cerebral arterial stiffness.
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Affiliation(s)
- Xuelong Li
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| | - Heng Du
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China
| | - Jia Li
- Department of Neurology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xianliang Li
- Institute of Neuroscience, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Qingchun Gao
- Institute of Neuroscience, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, China
| | - Xiangyan Chen
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR, China.
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Fang C, Magaki SD, Kim RC, Kalaria RN, Vinters HV, Fisher M. Arteriolar neuropathology in cerebral microvascular disease. Neuropathol Appl Neurobiol 2023; 49:e12875. [PMID: 36564356 DOI: 10.1111/nan.12875] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 11/14/2022] [Accepted: 12/13/2022] [Indexed: 12/25/2022]
Abstract
Cerebral microvascular disease (MVD) is an important cause of vascular cognitive impairment. MVD is heterogeneous in aetiology, ranging from universal ageing to the sporadic (hypertension, sporadic cerebral amyloid angiopathy [CAA] and chronic kidney disease) and the genetic (e.g., familial CAA, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy [CADASIL] and cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy [CARASIL]). The brain parenchymal consequences of MVD predominantly consist of lacunar infarcts (lacunes), microinfarcts, white matter disease of ageing and microhaemorrhages. MVD is characterised by substantial arteriolar neuropathology involving ubiquitous vascular smooth muscle cell (SMC) abnormalities. Cerebral MVD is characterised by a wide variety of arteriolar injuries but only a limited number of parenchymal manifestations. We reason that the cerebral arteriole plays a dominant role in the pathogenesis of each type of MVD. Perturbations in signalling and function (i.e., changes in proliferation, apoptosis, phenotypic switch and migration of SMC) are prominent in the pathogenesis of cerebral MVD, making 'cerebral angiomyopathy' an appropriate term to describe the spectrum of pathologic abnormalities. The evidence suggests that the cerebral arteriole acts as both source and mediator of parenchymal injury in MVD.
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Affiliation(s)
- Chuo Fang
- Department of Neurology, University of California, Irvine Medical Center, 101 The City Drive South Shanbrom Hall (Building 55), Room 121, Orange, 92868, California, USA
| | - Shino D Magaki
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Ronald C Kim
- Department of Pathology & Laboratory Medicine, University of California, Irvine, Orange, California, USA
| | - Raj N Kalaria
- Translational and Clinical Research Institute, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne, NE4 5PL, UK
| | - Harry V Vinters
- Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA.,Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Mark Fisher
- Department of Neurology, University of California, Irvine Medical Center, 101 The City Drive South Shanbrom Hall (Building 55), Room 121, Orange, 92868, California, USA.,Department of Pathology & Laboratory Medicine, University of California, Irvine, Orange, California, USA
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11
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Li X, Du H, Li J, Chen X. Intracranial artery calcification as an independent predictor of ischemic stroke: a systematic review and a meta-analysis. BMC Neurol 2023; 23:21. [PMID: 36647035 PMCID: PMC9841662 DOI: 10.1186/s12883-023-03069-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 01/13/2023] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND AND PURPOSE The association between intracranial artery calcification (IAC) and the risk of ischemic stroke occurrence or poor prognosis had not yet been fully understood. In this study, we conducted a meta-analysis of existing studies aimed to assess whether IAC can be used to predict future ischemic stroke and post-stroke mortality. METHODS Medline, Cochrane, Web of Science and Google Scholar databases were searched up to June 30, 2022. Studies were included if they reported risk ratio (RR) or odds ratios (OR) and corresponding 95% confidence intervals (CI) of stroke concerning the presence of IAC. Random or fixed effects model meta-analyses were performed. Meta-analysis was conducted by using Stata version 16.0. RESULTS Twelve studies involving 9346 participants were included. Compared with those without IAC, patients with IAC had a higher risk of stroke occurrence (adjusted OR 1.62, 95% CI 1.18-2.23, P = 0.001) and stroke recurrence (adjusted OR 1.77, 95% CI 1.25-2.51, P = 0.003). However, we did not find a significant correlation between IAC and post-stroke mortality (pooled OR 1.12, 95% CI 0.80-1.56, P = 0.504). CONCLUSIONS Our meta-analysis demonstrated that the presence of IAC was identified as an independent risk factor for ischemic stroke occurrence and recurrence but is not a predictor of post-stroke mortality.
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Affiliation(s)
- Xuelong Li
- grid.16890.360000 0004 1764 6123Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Heng Du
- grid.16890.360000 0004 1764 6123Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Jia Li
- grid.33199.310000 0004 0368 7223Department of Neurology, Wuhan No.1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei China
| | - Xiangyan Chen
- grid.16890.360000 0004 1764 6123Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
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12
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Amarin R, Alshalawi H, Zaghlol R, Price JB, Driscoll CF, Romberg E, Masri R. Incidental findings in cone beam computed tomography volumes: Calcified head-and-neck atheromas detected during dental evaluation. J Prosthodont 2022. [PMID: 36512480 DOI: 10.1111/jopr.13629] [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: 09/07/2022] [Revised: 11/05/2022] [Accepted: 12/06/2022] [Indexed: 12/15/2022] Open
Abstract
PURPOSE Atheromas can be detected incidentally in routine dental cone beam computed tomography (CBCT) images. This study aims to assess prevalence and risk factors associated with these vascular lesions. MATERIALS AND METHODS The maxillofacial CBCTs of 458 subjects were evaluated and divided into 4 groups based on the presence of calcified atheroma: subjects with no calcified atheroma, subjects with intracranial calcified atheroma (ICA), subjects with extracranial calcified atheroma (ECA), and subjects exhibiting combined lesions. Age, sex, medical conditions, family history, and size were documented. Analysis of variance followed by a multiple comparison test was used for data satisfying parametric test assumptions. Chi-squared tests were used to assess categorical data. The Spearman Rho test was used to assess the correlation between the incidence of calcified atheroma and subjects' medical condition. RESULTS Of the 458 CBCTs evaluated, 29.90% presented with calcified atheroma. Calcified atheroma prevalence was significantly higher in older patients versus younger patients (p = 0.004) and in males compared to females (p = 0.004). Males were more likely to have the combination of ICA and ECA, whereas females were more likely to have ICA alone (p ≤ 0.040). Patients with calcified atheroma were significantly more likely to have a history of hyperlipidemia (p = 0.001), hypertension (p = 0.001), and myocardial infarction/coronary artery diseases (p = 0.001). Overall, patients exhibiting both intracranial and extracranial lesions were more likely to have cardiovascular risk factors (p = 0.001). CONCLUSION Incidentally detected calcified atheromas in CBCTs are common. Subjects with combined atheroma lesions are at higher risk for cardiovascular disease. The diagnosis of incidental calcified atheromas in CBCT's warrants early referral to medical specialists, especially if there is no medical history of existing cardiovascular disease.
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Affiliation(s)
- Rula Amarin
- Department of Advanced Oral Sciences and Therapeutics, Division of Prosthodontics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
| | - Heba Alshalawi
- Department of Advanced Oral Sciences and Therapeutics, Division of Prosthodontics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
| | - Raja Zaghlol
- Division of Cardiovascular Disease, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Jeffrey B Price
- Department of Oncology and Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
| | - Carl F Driscoll
- Department of Advanced Oral Sciences and Therapeutics, Division of Prosthodontics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
| | - Elaine Romberg
- Department of Advanced Oral Sciences and Therapeutics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
| | - Radi Masri
- Department of Advanced Oral Sciences and Therapeutics, Division of Prosthodontics, School of Dentistry, University of Maryland, Baltimore, Maryland, USA
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13
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Fanadka F, Grumberg T, Topaz G, Benchetrit S, Zitman‐Gal T, Wand O, Cohen‐Hagai K. Intracranial and heart valve calcifications in hemodialysis patients-Interrelationship and clinical impact. Hemodial Int 2022; 26:527-532. [PMID: 35726583 PMCID: PMC9796181 DOI: 10.1111/hdi.13027] [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: 10/28/2021] [Revised: 01/27/2022] [Accepted: 03/25/2022] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Arterial calcification is an integral component of active atherosclerosis and is an independent risk factor for cardiovascular disease. Atherosclerosis is a systemic, life-threating disease that may occur at different sites and in various clinical presentations. Intracranial and valvular calcifications are common among dialysis patients and have been associated with poor cardiovascular outcomes. The aim of this study was to assess the clinical impact of valvular and intracranial arterial calcifications on mortality among chronic hemodialysis patients. METHODS A blinded neuroradiologist graded intracranial calcifications (ICC) of all hemodialysis patients who underwent brain computerized tomography (CT) from 2015 to 2017 in our institution. Valvular calcifications were assessed by echocardiography. Only hemodialysis patients with available echocardiography and brain CT were included. FINDINGS This study included 119 patients (mean age 70.6 ± 12.6 years, 57.1% men, and mean dialysis vintage 25.8 ± 42.6 months). Among the cohort, 19 (16%) had no cardiac or brain calcifications and 65 (54.6%) had both valvular and intracranial calcifications. Considering the patients with no calcification as the reference group yielded adjusted odds ratios for all-cause mortality of 3.68 (95%CI 1.55-8.75) among patients with any brain calcifications, p = 0.002. While valvular calcifications alone did not increase the 1-year mortality rate, ICC was the most important predictor of all-cause 1-year mortality in the study cohort. DISCUSSION We found an independent association between ICC and the risk of death among hemodialysis patients. Assessing ICC may contribute to the risk stratification of hemodialysis patients. These calcifications are no less important than valvular calcifications.
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Affiliation(s)
- Feda Fanadka
- Department of RadiologyMeir Medical CenterKfar SabaIsrael
| | - Tania Grumberg
- Department of AnesthesiologyMeir Medical CenterKfar SabaIsrael
| | - Guy Topaz
- Department of Internal Medicine CMeir Medical CenterKfar SabaIsrael
| | - Sydney Benchetrit
- Department of Nephrology and HypertensionMeir Medical CenterKfar SabaIsrael,Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - Tali Zitman‐Gal
- Department of Nephrology and HypertensionMeir Medical CenterKfar SabaIsrael,Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
| | - Ori Wand
- Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael,Faculty of Health SciencesBen‐Gurion University of the NegevBeer‐ShevaIsrael,Department of PulmonologyBarzilai Medical CenterAshkelonIsrael
| | - Keren Cohen‐Hagai
- Department of Nephrology and HypertensionMeir Medical CenterKfar SabaIsrael,Sackler Faculty of MedicineTel Aviv UniversityTel AvivIsrael
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14
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Fote GM, Raefsky S, Mock K, Chaudhari A, Shafie M, Yu W. Intracranial Arterial Calcifications: Potential Biomarkers of Stroke Risk and Outcome. Front Neurol 2022; 13:900579. [PMID: 36119671 PMCID: PMC9475140 DOI: 10.3389/fneur.2022.900579] [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: 03/20/2022] [Accepted: 06/24/2022] [Indexed: 11/30/2022] Open
Abstract
Intracranial artery calcifications (IAC), a common and easily identifiable finding on computed tomorgraphy angiography (CTA), has gained recognition as a possible risk factor for ischemic stroke. While atherosclerosis of intracranial arteries is believed to be a mechanism that commonly contributes to ischemic stroke, and coronary artery calcification is well-established as a predictor of both myocardial infarction (MI) and ischemic stroke risk, IAC is not currently used as a prognostic tool for stroke risk or recurrence. This review examines the pathophysiology and prevalence of IAC, and current evidence suggesting that IAC may be a useful tool for prediction of stroke incidence, recurrence, and response to acute ischemic stroke therapy.
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Affiliation(s)
- Gianna M. Fote
- School of Medicine, University of California, Irvine, Irvine, CA, United States
| | - Sophia Raefsky
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, United States
| | - Kelton Mock
- School of Medicine, University of California, Irvine, Irvine, CA, United States
| | - Amit Chaudhari
- Department of Neurology, University of California, Irvine, Irvine, CA, United States
- *Correspondence: Amit Chaudhari
| | - Mohammad Shafie
- Department of Neurology, University of California, Irvine, Irvine, CA, United States
| | - Wengui Yu
- Department of Neurology, University of California, Irvine, Irvine, CA, United States
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15
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Rroji M, Figurek A, Viggiano D, Capasso G, Spasovski G. Phosphate in the Context of Cognitive Impairment and Other Neurological Disorders Occurrence in Chronic Kidney Disease. Int J Mol Sci 2022; 23:ijms23137362. [PMID: 35806367 PMCID: PMC9266940 DOI: 10.3390/ijms23137362] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 02/01/2023] Open
Abstract
The nervous system and the kidneys are linked under physiological states to maintain normal body homeostasis. In chronic kidney disease (CKD), damaged kidneys can impair the central nervous system, including cerebrovascular disease and cognitive impairment (CI). Recently, kidney disease has been proposed as a new modifiable risk factor for dementia. It is reported that uremic toxins may have direct neurotoxic (astrocyte activation and neuronal death) and/or indirect action through vascular effects (cerebral endothelial dysfunction, calcification, and inflammation). This review summarizes the evidence from research investigating the pathophysiological effects of phosphate toxicity in the nervous system, raising the question of whether the control of hyperphosphatemia in CKD would lower patients’ risk of developing cognitive impairment and dementia.
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Affiliation(s)
- Merita Rroji
- Department of Nephrology, Faculty of Medicine, University of Medicine Tirana, 1001 Tirana, Albania
- Correspondence:
| | - Andreja Figurek
- Department of Internal Medicine, Medical Faculty, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina;
- Institute of Anatomy, University of Zurich, 8057 Zurich, Switzerland
| | - Davide Viggiano
- Department of Translational Medical Sciences, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (D.V.); (G.C.)
- BioGeM, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Giovambattista Capasso
- Department of Translational Medical Sciences, University of Campania “L. Vanvitelli”, 80138 Naples, Italy; (D.V.); (G.C.)
- BioGeM, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Goce Spasovski
- University Clinic for Nephrology, Medical Faculty, University St. Cyril and Methodius, 1000 Skopje, North Macedonia;
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16
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Du H, Yang W, Chen X. Histology-Verified Intracranial Artery Calcification and Its Clinical Relevance With Cerebrovascular Disease. Front Neurol 2022; 12:789035. [PMID: 35140673 PMCID: PMC8818681 DOI: 10.3389/fneur.2021.789035] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 12/21/2021] [Indexed: 11/13/2022] Open
Abstract
Intracranial artery calcification (IAC) was regarded as a proxy for intracranial atherosclerosis (ICAS). IAC could be easily detected on routine computer tomography (CT), which was neglected by clinicians in the previous years. The evolution of advanced imaging technologies, especially vessel wall scanning using high resolution-magnetic resonance imaging (HR-MRI), has aroused the interest of researchers to further explore the characteristics and clinical impacts of IAC. Recent histological evidence acquired from the human cerebral artery specimens demonstrated that IAC could mainly involve two layers: the intima and the media. Accumulating evidence from histological and clinical imaging studies verified that intimal calcification is more associated with ICAS, while medial calcification, especially the internal elastic lamina, contributes to arterial stiffness rather than ICAS. Considering the highly improved abilities of novel imaging technologies in differentiating intimal and medial calcification within the large intracranial arteries, this review aimed to describe the histological and imaging features of two types of IAC, as well as the risk factors, the hemodynamic influences, and other clinical impacts of IAC occurring in intimal or media layers.
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Affiliation(s)
- Heng Du
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - Wenjie Yang
- Department of Diagnostic Radiology and Nuclear Medicine, School of Medicine, University of Maryland, Baltimore, MD, United States
| | - Xiangyan Chen
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
- *Correspondence: Xiangyan Chen
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17
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Premužić V, Gardijan D, Herega T, Perkov D, Jelaković B. High prevalence of middle cerebral artery calcification is associated with cardiovascular mortality in hemodialyzed patients: an overlooked part of arterial tree? Int Urol Nephrol 2022; 54:1995-2004. [PMID: 35031973 DOI: 10.1007/s11255-021-03092-2] [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: 07/05/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE We have analyzed markers of accelerated atherosclerosis like large artery stiffness, ankle-brachial index, carotid and vertebral duplex ultrasonography and their possible associations with the incidence of intracranial calcifications, clinical course of hemodialyzed patients, and cardiovascular mortality. METHODS A computed tomographic scan of the head was performed for any neurological indication on 100 hemodialyzed patients. Eleven intracranial arteries were analyzed for calcification score, while internal carotid arteries and vertebral arteries were excluded in cerebral artery calcification score. As a control group for assessing intracranial calcifications, we have analyzed computed tomographic scans from diabetic patients who had an acute stroke. RESULTS Deceased patients had significantly higher values of augmentation index and pulse wave velocity, lower ankle-brachial index, and higher internal carotid arteries peak systolic value than survived patients. Deceased patients had significantly higher number of calcified middle cerebral arteries as well as significantly higher intracranial artery calcification score and cerebral artery calcification score. Hemodialyzed patients had significantly higher both intracranial and cerebral artery calcification scores than diabetic control group. Age and calcified middle cerebral arteries had increased HR of 1.08 and 1.36 for cardiovascular mortality. CONCLUSION This study showed that large artery stiffness and not the presence of peripheral arterial disease or carotid artery stenosis have the prognostic role of middle cerebral arteries' calcifications and cardiovascular mortality in hemodialyzed patients. The presence of middle cerebral arteries' calcifications diagnosed by a non-invasive method should be considered a marker of middle-sized conduit arteries atherosclerosis, subclinical brain damage, and future fatal cardiovascular events.
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Affiliation(s)
- Vedran Premužić
- Department of Nephrology, Hypertension, Dialysis and Transplantation, School of Medicine, University Hospital Center Zagreb, 10000, Zagreb, Croatia.
| | - Danilo Gardijan
- Department of Radiology, School of Medicine, University Hospital Center Zagreb, Zagreb, Croatia
| | - Tomislav Herega
- Department of Radiology, School of Medicine, University Hospital Center Zagreb, Zagreb, Croatia
| | - Dražen Perkov
- Department of Radiology, School of Medicine, University Hospital Center Zagreb, Zagreb, Croatia
| | - Bojan Jelaković
- Department of Nephrology, Hypertension, Dialysis and Transplantation, School of Medicine, University Hospital Center Zagreb, 10000, Zagreb, Croatia
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18
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Ahmed M, McPherson R, Abruzzo A, Thomas SE, Gorantla VR. Carotid Artery Calcification: What We Know So Far. Cureus 2021; 13:e18938. [PMID: 34815892 PMCID: PMC8605497 DOI: 10.7759/cureus.18938] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/21/2021] [Indexed: 12/27/2022] Open
Abstract
Carotid artery calcification (CAC) is a well-known marker of atherosclerosis and is linked to a high rate of morbidity and mortality. CAC is divided into two types: intimal and medial calcifications, each with its own set of risk factors. Vascular calcification is now understood to be an active, enzymatically regulated process involving dystrophic calcification and endothelial dysfunction at an early stage. This causes a pathogenic inflammatory response, resulting in calcium phosphate deposition in the form of microcalcifications, which causes plaque formation, ultimately becoming unstable with sequelae of complications. If the inflammation goes away, hydroxyapatite crystal formation takes over, resulting in macro-calcifications that help to keep the plaque stable. As CAC can be asymptomatic, it is critical to identify it early using diagnostic imaging. The carotid artery calcification score is calculated using computed tomography angiography (CTA), which is a confirmatory test that enables the examination of plaque composition and computation of the carotid artery calcification score. Magnetic resonance angiography (MRA), which is sensitive as CTA, duplex ultrasound (DUS), positron emission tomography, and computed tomography (PET-CT) imaging with (18) F-Sodium Fluoride, and Optical Coherence Tomography (OCT) are some of the other diagnostic imaging modalities used. The current therapeutic method starts with the best medical care and is advised for all CAC patients. Carotid endarterectomy and carotid stenting are two treatment options that have mixed results in terms of effectiveness and safety. When patient age and anatomy, operator expertise, and surgical risk are all considered, the agreement is that both techniques are equally beneficial.
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Affiliation(s)
- Madeeha Ahmed
- Family Medicine, American University of Antigua College of Medicine, Antigua, ATG
| | - Regina McPherson
- Anatomical Sciences, American University of Antigua, St.John's, ATG
| | - Alexandra Abruzzo
- Anatomical Sciences, St. George's University School of Medicine, St. George's, GRD
| | - Sneha E Thomas
- Internal Medicine, University of Maryland Medical Center, Baltimore, USA
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19
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Nakayama S, Satoh M, Metoki H, Murakami T, Asayama K, Hara A, Hirose T, Kanno A, Inoue R, Tsubota-Utsugi M, Kikuya M, Mori T, Hozawa A, Imai Y, Ohkubo T. Lifetime risk of stroke stratified by chronic kidney disease and hypertension in the general Asian population: the Ohasama study. Hypertens Res 2021; 44:866-873. [PMID: 33742168 DOI: 10.1038/s41440-021-00635-z] [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: 08/29/2020] [Revised: 12/04/2020] [Accepted: 01/20/2021] [Indexed: 11/09/2022]
Abstract
Lifetime risk (LTR) evaluates the absolute risk of developing a disease during the remainder of one's life. It can be a useful tool, enabling the general public to easily understand their risk of stroke. No study has been performed to determine the LTR of cardiovascular disease in patients with chronic kidney disease (CKD) with or without hypertension; therefore, we performed this study in an Asian population. We followed 1525 participants (66.0% women; age 63.1 years) in the general population of Ohasama, Japan. We defined CKD as an estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m2 and/or proteinuria. Hypertension was defined as a systolic/diastolic blood pressure ≥140/≥90 mmHg and/or the use of antihypertensive medication. We calculated the sex-specific LTR of stroke adjusted for the competing risk of death. During the mean follow-up period of 16.5 years, a first stroke occurred in 238 participants. The 10-year risk of stroke at the age of 45 years was 0.0% for men and women. The LTRs of stroke at the index age of 45 years (men/women) were 20.9%/14.5% for participants without CKD and hypertension, 34.1%/29.8% for those with CKD but not hypertension, 37.9%/27.3% for those with hypertension but not CKD, and 38.4%/36.4% for those with CKD and hypertension. The LTRs of stroke tended to be higher in younger participants than in older participants with CKD and/or hypertension. CKD contributed to the LTR of stroke, as did hypertension. The prevention of CKD and hypertension can reduce the LTR of stroke, especially in young populations.
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Affiliation(s)
- Shingo Nakayama
- Division of Nephrology and Endocrinology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Michihiro Satoh
- Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan. .,Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Tohoku Institute for Management of Blood Pressure, Sendai, Japan.,Department of Community Medical Support, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Takahisa Murakami
- Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan.,Department of Community Medical Support, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Division of Aging and Geriatric Dentistry, Department of Rehabilitation Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Kei Asayama
- Tohoku Institute for Management of Blood Pressure, Sendai, Japan.,Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan
| | - Azusa Hara
- Division of Drug Development and Regulatory Science, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - Takuo Hirose
- Division of Nephrology and Endocrinology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Atsuhiro Kanno
- Division of Community Medicine, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Ryusuke Inoue
- Medical Information Technology Center, Tohoku University Hospital, Sendai, Japan
| | - Megumi Tsubota-Utsugi
- Department of Hygiene and Preventive Medicine, Iwate Medical University School of Medicine, Morioka, Japan
| | - Masahiro Kikuya
- Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan
| | - Takefumi Mori
- Division of Nephrology and Endocrinology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Atsushi Hozawa
- Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Yutaka Imai
- Tohoku Institute for Management of Blood Pressure, Sendai, Japan
| | - Takayoshi Ohkubo
- Tohoku Institute for Management of Blood Pressure, Sendai, Japan.,Department of Hygiene and Public Health, Teikyo University School of Medicine, Tokyo, Japan
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20
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Ghoshal S, Gomez J, Datar SV, Tegeler C, Sarwal A, Freedman BI. The impact of chronic kidney disease on cerebral hemodynamics: A transcranial Doppler study. J Cereb Blood Flow Metab 2020; 40:482-487. [PMID: 31842666 PMCID: PMC7026848 DOI: 10.1177/0271678x19893337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Chronic kidney disease (CKD) independently increases the risk of stroke and small vessel disease (SVD). This study compared SVD and a transcranial Doppler (TCD)-based marker of intracranial vascular resistance (pulsatility index, PI) in post-stroke patients with and without CKD. Between January 2015 and December 2017, 118 individuals with stable eGFR (50 with CKD) had cerebral MRI and TCD within three months of a stroke. The means of bilateral PI in anterior (anterior cerebral [ACA] and middle cerebral arteries [MCA]) and posterior vessels (posterior cerebral [PCA] and vertebral arteries [VA]) were computed. CKD strongly correlated with higher distal resistance (median CKD ACA PI 1.2, IQR 1.0 to 1.35 vs. controls 0.91 IQR 0.79 to 1.1 [p < 0.0001]; median MCA PI 1.14 IQR 1.03 to 1.39 vs. controls 0.93 IQR 0.79 to 1.1 [p < 0.0001]) and MRI SVD burden (median CKD SVD 4.98 × 104 IQR 2.66 to 7.76 × 104 voxels vs. controls median SVD 6.7 × 103 IQR 2.4 to 24.0 × 103 [p < 0.0001]). In conclusion, in patients with recent stroke, CKD is an independent determinant of increased intracranial vascular resistance in both anterior and posterior cerebral circulations. MRI SVD volume is significantly associated with anterior and posterior circulation PI.
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Affiliation(s)
- Shivani Ghoshal
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Jonathan Gomez
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Sudhir V Datar
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Charles Tegeler
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Aarti Sarwal
- Department of Neurology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Barry I Freedman
- Department of Internal Medicine, Section on Nephrology, Wake Forest School of Medicine, Winston-Salem, NC, USA
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21
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Clinical Profile and Outcome of Intracranial Bleeding in Patients Undergoing Hemodialysis at a Tertiary Hospital. Nephrourol Mon 2020. [DOI: 10.5812/numonthly.98242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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22
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Mutalik S, Tadinada A. Assessment of relationship between extracranial and intracranial carotid calcifications-a retrospective cone beam computed tomography study. Dentomaxillofac Radiol 2019; 48:20190013. [PMID: 31386560 DOI: 10.1259/dmfr.20190013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES Cone beam CT scans in current day dental practice are highly collimated yet involve areas along the course of the extracranial carotid artery. Detecting an extracranial carotid calcification on small volume scans leaves the dentist with two questions: whether the patient is likely to have intracranial carotid calcifications and whether the patient warrants further medical attention. This study aimed to assess the presence of intracranial carotid artery calcifications (ICAC) in the presence of extracranial carotid artery calcifications (ECAC). METHODS 450 CBCT scans were retrospectively evaluated for ECAC and ICAC. Erby et al's classification was modified to classify calcifications as mild, moderate, and severe. The presence of ICAC when ECAC were present was evaluated in all three orthogonal planes. The risk of ICAC in the presence of ECAC was calculated as odds ratio and the association between the two was calculated using a χ2 test. RESULTS The odds ratio for bilateral ICAC in the presence of bilateral ECAC was 15.09. The odds ratio for left ICAC/right ICAC in the presence of left/ right ECAC was 0.833 and 2.564, respectively. The number and severity of calcifications increased with age. The χ2 test showed that there was a strong association (p < 0.001) between bilateral ECAC with bilateral ICAC. CONCLUSIONS The results of this group of patients showed that there is an increased presence of ICAC in the presence of ECAC.
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Affiliation(s)
- Sunil Mutalik
- University of Connecticut, School of Dental Medicine, 263 Farmington Avenue, Farmington, CT
| | - Aditya Tadinada
- University of Connecticut, School of Dental Medicine, 263 Farmington Avenue, Farmington, CT
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Pathological Mineralization: The Potential of Mineralomics. MATERIALS 2019; 12:ma12193126. [PMID: 31557841 PMCID: PMC6804219 DOI: 10.3390/ma12193126] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/11/2019] [Accepted: 09/19/2019] [Indexed: 12/11/2022]
Abstract
Pathological mineralization has been reported countless times in the literature and is a well-known phenomenon in the medical field for its connections to a wide range of diseases, including cancer, cardiovascular, and neurodegenerative diseases. The minerals involved in calcification, however, have not been directly studied as extensively as the organic components of each of the pathologies. These have been studied in isolation and, for most of them, physicochemical properties are hitherto not fully known. In a parallel development, materials science methods such as electron microscopy, spectroscopy, thermal analysis, and others have been used in biology mainly for the study of hard tissues and biomaterials and have only recently been incorporated in the study of other biological systems. This review connects a range of soft tissue diseases, including breast cancer, age-related macular degeneration, aortic valve stenosis, kidney stone diseases, and Fahr’s syndrome, all of which have been associated with mineralization processes. Furthermore, it describes how physicochemical material characterization methods have been used to provide new information on such pathologies. Here, we focus on diseases that are associated with calcium-composed minerals to discuss how understanding the properties of these minerals can provide new insights on their origins, considering that different conditions and biological features are required for each type of mineral to be formed. We show that mineralomics, or the study of the properties and roles of minerals, can provide information which will help to improve prevention methods against pathological mineral build-up, which in the cases of most of the diseases mentioned in this review, will ultimately lead to new prevention or treatment methods for the diseases. Importantly, this review aims to highlight that chemical composition alone cannot fully support conclusions drawn on the nature of these minerals.
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Kong WY, Tan BYQ, Ellis ES, Ngiam NJH, Goh WGW, Sharma VK, Chan BPL, Yeo LLL. Intracranial Artery Calcium Burden Predicts Recurrent Cerebrovascular Events in Transient Ischaemic Attack Patients. J Stroke Cerebrovasc Dis 2019; 28:2332-2336. [DOI: 10.1016/j.jstrokecerebrovasdis.2019.05.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/30/2019] [Accepted: 05/24/2019] [Indexed: 10/26/2022] Open
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Hirunpattarasilp C, Attwell D, Freitas F. The role of pericytes in brain disorders: from the periphery to the brain. J Neurochem 2019; 150:648-665. [PMID: 31106417 DOI: 10.1111/jnc.14725] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/15/2019] [Accepted: 05/15/2019] [Indexed: 12/13/2022]
Abstract
It is becoming increasingly apparent that disorders of the brain microvasculature contribute to many neurological disorders. In recent years it has become clear that a major player in these events is the capillary pericyte which, in the brain, is now known to control the blood-brain barrier, regulate blood flow, influence immune cell entry and be crucial for angiogenesis. In this review we consider the under-explored possibility that peripheral diseases which affect the microvasculature, such as hypertension, kidney disease and diabetes, produce central nervous system (CNS) dysfunction by mechanisms affecting capillary pericytes within the CNS. We highlight how cellular messengers produced peripherally can act via signalling pathways within CNS pericytes to reshape blood vessels, restrict blood flow or compromise blood-brain barrier function, thus causing neuronal dysfunction. Increased understanding of how renin-angiotensin, Rho-kinase and PDGFRβ signalling affect CNS pericytes may suggest novel therapeutic approaches to reducing the CNS effects of peripheral disorders.
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Affiliation(s)
- Chanawee Hirunpattarasilp
- Department of Neuroscience, Andrew Huxley Building, University College London, Physiology & Pharmacology, Gower Street, London, UK
| | - David Attwell
- Department of Neuroscience, Andrew Huxley Building, University College London, Physiology & Pharmacology, Gower Street, London, UK
| | - Felipe Freitas
- Department of Neuroscience, Andrew Huxley Building, University College London, Physiology & Pharmacology, Gower Street, London, UK
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Mice Knocked Out for the Primary Brain Calcification–Associated Gene Slc20a2 Show Unimpaired Prenatal Survival but Retarded Growth and Nodules in the Brain that Grow and Calcify Over Time. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:1865-1881. [DOI: 10.1016/j.ajpath.2018.04.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 03/30/2018] [Accepted: 04/19/2018] [Indexed: 12/17/2022]
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Low serum phosphate is associated with ischemic stroke in hemodialysis patients. Clin Exp Nephrol 2018; 22:1182-1187. [DOI: 10.1007/s10157-018-1578-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/11/2018] [Indexed: 11/26/2022]
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28
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Gökçal E, Niftaliyev E, Özdemir T, Kolukısa M, Asil T. The association of vertebrobasilar calcification with etiological subtypes, stroke recurrence and outcome in acute brainstem ischemic stroke. Neurol Neurochir Pol 2018; 52:188-193. [DOI: 10.1016/j.pjnns.2017.09.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Revised: 09/22/2017] [Accepted: 09/27/2017] [Indexed: 10/18/2022]
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Cherng YG, Lin CS, Shih CC, Hsu YH, Yeh CC, Hu CJ, Chen TL, Liao CC. Stroke risk and outcomes in patients with chronic kidney disease or end-stage renal disease: Two nationwide studies. PLoS One 2018; 13:e0191155. [PMID: 29329323 PMCID: PMC5766135 DOI: 10.1371/journal.pone.0191155] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 11/29/2017] [Indexed: 12/11/2022] Open
Abstract
Background and aims Because the risk and outcomes of stroke in patients with chronic kidney disease (CKD) or end-stage renal disease (ESRD) were unclear, we evaluated these risks using a retrospective cohort study and a nested cohort study. Methods We used Taiwan’s National Health Insurance Research Database to identify 1378 patients aged ≥20 years who had ESRD in 2000–2004. An age- and sex-matched CKD cohort (n = 5512) and a control cohort (n = 11,024) were selected for comparison. Events of incident stroke were considered as outcome during the follow-up period in 2000–2013, and we calculated adjusted hazard ratios (HR) and 95% CIs of stroke associated with CKD or ESRD. We further used matching procedure with propensity score to estimate the risk of stroke for control group, CKD patients, and EDRD patients. A nested cohort study of 318,638 hospitalized stroke patients between 2000 and 2010 also was conducted to analyze the impact of CKD and ESRD on post-stroke mortality. Results Before propensity-score matching, the incidences of stroke for controls, CKD patients and ESRD patients were 6.57, 13.3, and 21.7 per 1000 person-years, respectively. Compared with control group, the adjusted HRs of stroke were 1.49 (95% CI, 1.32–1.68) and 2.39 (95% CI, 1.39–2.87) for people with CKD or ESRD respectively, and were significantly higher in both sexes and every age group. After propensity-score matching, the HRs of stroke for patients with CKD and ESRD were 1.51 (95% CI 1.24–1.85) and 2.08 (95% CI 1.32–3.26), respectively, during the follow-up period. Among hospitalized stroke patients, adjusted rate ratio (RR) of post-stroke mortality in CKD and ESRD cohorts were 1.44 (95% CI, 1.33–1.56) and 2.62 (95% CI, 2.43–2.82) respectively compared with control. Conclusions CKD and ESRD patient groups thus faced significantly higher risk of stroke and post-stroke mortality. Risk factor identification and preventive strategies are needed to minimize stroke risk and post-stroke mortality in these vulnerable patient groups.
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Affiliation(s)
- Yih-Giun Cherng
- Department of Anesthesiology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of Anesthesiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chao-Shun Lin
- Department of Anesthesiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan
- Anesthesiology and Health Policy Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chun-Chuan Shih
- School of Chinese Medicine for Post-Baccalaureate, College of Medicine, I-Shou University, Kaohsiung, Taiwan
- Program for the Clinical Drug Discovery from Botanical Herbs, Taipei Medical University, Taipei, Taiwan
| | - Yung-Ho Hsu
- Department of Nephrology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of Nephrology, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chun-Chieh Yeh
- Department of Surgery, China Medical University Hospital, Taichung, Taiwan
- Department of Surgery, University of Illinois, Chicago, United States of America
| | - Chaur-Jong Hu
- Department of Neurology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Ta-Liang Chen
- Department of Anesthesiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan
- Anesthesiology and Health Policy Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chien-Chang Liao
- Department of Anesthesiology, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of Anesthesiology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan
- Anesthesiology and Health Policy Research Center, Taipei Medical University Hospital, Taipei, Taiwan
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
- * E-mail: ,
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Adams LC, Böker SM, Bender YY, Fallenberg EM, Wagner M, Liebig T, Hamm B, Makowski MR. Detection of vessel wall calcifications in vertebral arteries using susceptibility weighted imaging. Neuroradiology 2017; 59:861-872. [PMID: 28730268 DOI: 10.1007/s00234-017-1878-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 06/30/2017] [Indexed: 01/01/2023]
Abstract
PURPOSE Calcification of the brain supplying arteries has been linked to an increased risk for cerebrovascular disease. The purpose of this study was to test the potential of susceptibility weighted MR imaging (SWMR) for the detection of vertebral artery calcifications, based on CT as a reference standard. METHODS Four hundred seventy-four patients, who had received head CT and 1.5 T MR scans with SWMR, including the distal vertebral artery, between January 2014 and December 2016, were retrospectively evaluated and 389 patients were included. Sensitivity and specificity for the detection of focal calcifications and intra- and interobserver agreement were calculated for SWMR and standard MRI, using CT as a standard of reference. The diameter of vertebral artery calcifications was used to assess correlations between imaging modalities. Furthermore, the degree of vessel stenosis was determined in 30 patients, who had received an additional angiography. RESULTS On CT scans, 40 patients showed a total of 52 vertebral artery calcifications. While SWMR reached a sensitivity of 94% (95% CI 84-99%) and a specificity of 97% (95% CI 94-98%), standard MRI yielded a sensitivity of 33% (95% CI 20-46%), and a specificity of 93% (95% CI 90-96%). Linear regression analysis of size measurements confirmed a close correlation between SWMR and CT measurements (R 2 = 0.74, p < 0.001). Compared to standard MRI (ICC = 0.52; CI 0.45-0.59), SWMR showed a higher interobserver agreement for calcification measurements (ICC = 0.84; CI 0.81-0.87). CONCLUSIONS For detection of distal vertebral artery calcifications, SWMR demonstrates a performance comparable to CT and considerably higher than conventional MRI.
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Affiliation(s)
- Lisa C Adams
- Department of Radiology, Charité, Charitéplatz 1, 10117, Berlin, Germany.
| | - Sarah M Böker
- Department of Radiology, Charité, Charitéplatz 1, 10117, Berlin, Germany
| | - Yvonne Y Bender
- Department of Radiology, Charité, Charitéplatz 1, 10117, Berlin, Germany
| | - Eva M Fallenberg
- Department of Radiology, Charité, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Moritz Wagner
- Department of Radiology, Charité, Charitéplatz 1, 10117, Berlin, Germany
| | - Thomas Liebig
- Department of Neuroradiology, Charité, Charitéplatz 1, 10117, Berlin, Germany
| | - Bernd Hamm
- Department of Radiology, Charité, Charitéplatz 1, 10117, Berlin, Germany
| | - Marcus R Makowski
- Department of Radiology, Charité, Charitéplatz 1, 10117, Berlin, Germany
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Shen Z, Ruan Q, Yu Z, Sun Z. Chronic kidney disease-related physical frailty and cognitive impairment: a systemic review. Geriatr Gerontol Int 2017; 17:529-544. [PMID: 27240548 DOI: 10.1111/ggi.12758] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 01/12/2016] [Indexed: 11/28/2022]
Abstract
AIM The objective of this review was to assess chronic kidney disease-related frailty and cognitive impairment, as well as their probable causes, mechanisms and the interventions. METHODS Studies from 1990 to 2015 were reviewed to evaluate the relationship between chronic kidney disease and physical frailty and cognitive impairment. Of the 1694 studies from the initial search, longitudinal studies (n = 22) with the keywords "Cognitive and CKD" and longitudinal or cross-sectional studies (n = 5) with the keywords "Frailty and CKD" were included in final analysis. RESULTS By pooling current research, we show clear evidence for a relationship between chronic kidney disease and frailty and cognitive impairment in major studies. Vascular disease is likely an important mediator, particularly for cognitive impairment. However, non-vascular factors also play an important role. Many of the other mechanisms that contribute to impaired cognitive function and increased frailty in CKD remain to be elucidated. In limited studies, medication therapy did not obtain the ideal effect. There are limited data on treatment strategies, but addressing the vascular disease risk factors earlier in life might decrease the subsequent burden of frailty and cognitive impairment in this population. Multidimensional interventions, which address both microvascular health and other factors, may have substantial benefits for both the cognitive impairments and physical frailty in this vulnerable population. CONCLUSIONS Chronic kidney disease is a potential cause of frailty and cognitive impairment. Vascular and non-vascular factors are the possible causes. The mechanism of chronic kidney disease-induced physical frailty and cognitive impairment suggests that multidimensional interventions may be effective therapeutic strategies in the early stage of chronic kidney disease. Geriatr Gerontol Int 2017; 17: 529-544.
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Affiliation(s)
- Zhiyuan Shen
- Department of Urology, Huadong Hospital, Fudan University, 221 West Yan'an Road, Shanghai, China
| | - Qingwei Ruan
- Shanghai Institute of Geriatrics and Gerontology, Shanghai Key Laboratory of Clinical Geriatrics, Department of Geriatrics, Huadong Hospital, and Research Center of Aging and Medicine, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhuowei Yu
- Shanghai Institute of Geriatrics and Gerontology, Shanghai Key Laboratory of Clinical Geriatrics, Department of Geriatrics, Huadong Hospital, and Research Center of Aging and Medicine, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhongquan Sun
- Department of Urology, Huadong Hospital, Fudan University, 221 West Yan'an Road, Shanghai, China
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Cerebral disease in a nationwide Dutch pseudoxanthoma elasticum cohort with a systematic review of the literature. J Neurol Sci 2017; 373:167-172. [DOI: 10.1016/j.jns.2016.12.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/29/2016] [Accepted: 12/26/2016] [Indexed: 01/09/2023]
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Afsar B, Sag AA, Yalcin CE, Kaya E, Siriopol D, Goldsmith D, Covic A, Kanbay M. Brain-kidney cross-talk: Definition and emerging evidence. Eur J Intern Med 2016; 36:7-12. [PMID: 27531628 DOI: 10.1016/j.ejim.2016.07.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 07/29/2016] [Accepted: 07/31/2016] [Indexed: 12/12/2022]
Abstract
Cross-talk is broadly defined as endogenous homeostatic signaling between vital organs such as the heart, kidneys and brain. Kidney-brain cross-talk remains an area with excitingly few publications despite its purported clinical relevance in the management of currently undertreated conditions such as resistant hypertension. Therefore, this review aims to establish an organ-specific definition for kidney-brain cross-talk and review the available and forthcoming literature on this topic.
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Affiliation(s)
- Baris Afsar
- Department of Medicine, Division of Nephrology, Konya Numune State Hospital, Konya, Turkey
| | - Alan A Sag
- Department of Radiology, Division of Interventional Radiology, Koc University School of Medicine, Istanbul, Turkey
| | - Can Ege Yalcin
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Eren Kaya
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Dimitrie Siriopol
- Nephrology Clinic, Dialysis and Renal Transplant Center, 'C.I. PARHON' University Hospital, and 'Grigore T. Popa' University of Medicine, Iasi, Romania
| | - David Goldsmith
- Renal and Transplantation Department, Guy's and St Thomas' Hospitals, London, UK
| | - Adrian Covic
- Nephrology Clinic, Dialysis and Renal Transplant Center, 'C.I. PARHON' University Hospital, and 'Grigore T. Popa' University of Medicine, Iasi, Romania
| | - Mehmet Kanbay
- Department of Medicine, Division of Nephrology, Koc University School of Medicine, Istanbul, Turkey.
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Severity and presence of atherosclerosis signs within the segments of internal carotid artery: CBCT's contribution. Oral Surg Oral Med Oral Pathol Oral Radiol 2016; 122:89-97. [DOI: 10.1016/j.oooo.2016.03.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 03/07/2016] [Accepted: 03/18/2016] [Indexed: 11/21/2022]
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Wu XH, Chen XY, Wang LJ, Wong KS. Intracranial Artery Calcification and Its Clinical Significance. J Clin Neurol 2016; 12:253-61. [PMID: 27165425 PMCID: PMC4960208 DOI: 10.3988/jcn.2016.12.3.253] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/20/2015] [Accepted: 12/21/2015] [Indexed: 01/19/2023] Open
Abstract
Intracranial arterial calcification (IAC) is an easily identifiable entity on plain head computed tomography scans. Recent studies have found high prevalence rates for IAC worldwide, and this may be associated with ischemic stroke and cognitive decline. Aging, traditional cardiovascular risk factors, and chronic kidney disease have been found to be associated with IAC. The severity of IAC can be assessed using different visual grading scales or various quantitative methods (by measuring volume or intensity). An objective method for assessing IAC using consistent criteria is urgently required to facilitate comparisons between multiple studies involving diverse populations. There is accumulating evidence from clinical studies that IAC could be utilized as an indicator of intracranial atherosclerosis. However, the pathophysiology underlying the potential correlation between IAC and ischemic stroke-through direct arterial stenosis or plaque stability-remains to be determined. More well-designed clinical studies are needed to explore the predictive values of IAC in vascular events and the underlying pathophysiological mechanisms.
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Affiliation(s)
- Xiao Hong Wu
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Xiang Yan Chen
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China.
| | - Li Juan Wang
- Department of Neurology, The First Hospital of Jilin University, Jilin, China
| | - Ka Sing Wong
- Department of Medicine and Therapeutics, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
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Arnold J, Sims D, Ferro CJ. Modulation of stroke risk in chronic kidney disease. Clin Kidney J 2015; 9:29-38. [PMID: 26798458 PMCID: PMC4720212 DOI: 10.1093/ckj/sfv136] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 11/10/2015] [Indexed: 12/12/2022] Open
Abstract
Stroke is the second most common cause of death and the leading cause of neurological disability worldwide, with huge economic costs and tragic human consequences. Both chronic kidney disease (CKD) and end-stage kidney disease are associated with a significantly increased risk of stroke. However, to date this has generated far less interest compared with the better-recognized links between cardiac and renal disease. Common risk factors for stroke, such as hypertension, hypercholesterolaemia, smoking and atrial fibrillation, are shared with the general population but are more prevalent in renal patients. In addition, factors unique to these patients, such as disorders of mineral and bone metabolism, anaemia and its treatments as well as the process of dialysis itself, are all also postulated to further increase the risk of stroke. In the general population, advances in medical therapies mean that effective primary and secondary prevention therapies are available for many patients. The development of specialist stroke clinics and acute stroke units has also improved outcomes after a stroke. Emerging therapies such as thrombolysis and thrombectomy are showing increasingly beneficial results. However, patients with CKD and on dialysis have different risk profiles that must be taken into account when considering the potential benefits and risks of these treatments. Unfortunately, these patients are either not recruited or formally excluded from major clinical trials. There is still much work to be done to harness effective stroke treatments with an acceptable safety profile for patients with CKD and those on dialysis.
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Affiliation(s)
- Julia Arnold
- Department of Nephrology , Queen Elizabeth Hospital , Birmingham , UK
| | - Don Sims
- Department of Stroke Medicine , Queen Elizabeth Hospital , Birmingham , UK
| | - Charles J Ferro
- Department of Nephrology , Queen Elizabeth Hospital , Birmingham , UK
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The presence of calcifications along the course of internal carotid artery in Greek and Brazilian populations: a comparative and retrospective cone beam CT data analysis. Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 121:81-90. [PMID: 26679361 DOI: 10.1016/j.oooo.2015.10.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 10/06/2015] [Accepted: 10/09/2015] [Indexed: 01/21/2023]
Abstract
OBJECTIVES We aimed to retrospectively compare the prevalence of soft tissue calcifications (STCs) depicted incidentally along the extra- and intracranial course of the internal carotid artery (ICA) on cone beam computed tomography examinations in 2 different populations (Greeks and Brazilians). METHODS The cohort consisted of examinations of 232 Greeks and 174 Brazilians, for a total of 406 patients. The scans were evaluated for the presence of STCs along the course of the ICA, with data analyzed in each ethnic group according to gender and age criteria. RESULTS In total, 355 STCs were recorded; 78 (22.0% of all STCs) and 58 (16.3%) were extracranials, and 128 (36.1%) and 91 (25.6%) were intracranials for Greeks and Brazilians, respectively. The χ(2) test indicated no statistical differences between Greeks and Brazilians in the occurrence of STCs; however, their prevalence differed between genders in those populations. The presence of lesions, both extra- and intracranially, was found to increase with age (P < .05). The odds ratios were estimated at 2.23 (95% CI, 1.81-2.74) and 3.26 (95% CI, 2.56-4.16) for extracranial and intracranial lesions, respectively, with increasing age. CONCLUSIONS We found an equal distribution for both extra- and intracranial STCs among Greeks and Brazilians. The prevalence of lesions differed between genders within both populations. Aging was found to be a risk factor for STCs, as the odds ratio increased significantly.
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Kao HW, Liou M, Chung HW, Liu HS, Tsai PH, Chiang SW, Chou MC, Peng GS, Huang GS, Hsu HH, Chen CY. Middle Cerebral Artery Calcification: Association With Ischemic Stroke. Medicine (Baltimore) 2015; 94:e2311. [PMID: 26683969 PMCID: PMC5058941 DOI: 10.1097/md.0000000000002311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Calcification of the middle cerebral artery (MCA) is uncommon in the healthy elderly. Whether calcification of the MCA is associated with cerebral ischemic stroke remains undetermined. We intended to investigate the association using Agatston calcium scoring of the MCA. This study retrospectively included 354 subjects with ischemic stroke in the MCA territory and 1518 control subjects who underwent computed tomography (CT) of the brain. We recorded major known risk factors for ischemic stroke, including age, gender, hypertension, diabetes mellitus, smoking, hyperlipidemia, and obesity, along with the MCA calcium burden, measured with the Agatston calcium scoring method. Univariate and modified logistic regression analyses were performed to examine the association between the MCA calcification and ischemic stroke. The univariate analyses showed significant associations of ischemic stroke with age, hypertension, diabetes mellitus, smoking, total MCA Agatston score, and the presence of calcification on both or either side of the MCA. Subjects with the presence of MCA calcification on both or either side of the MCA were 8.46 times (95% confidence interval, 4.93-14.53; P < 0.001) more likely to have a cerebral infarct than subjects without MCA calcification after adjustment for the major known risk factors, including age, hypertension, diabetes mellitus, and smoking. However, a higher degree of MCA calcification reflected by the Agatston score was not associated with higher risk of MCA ischemic stroke after adjustment for the confounding factors and presence of MCA calcification. These results suggest that MCA calcification is associated with ischemic stroke in the MCA territory. Further prospective studies are required to verify the clinical implications of the MCA calcification.
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Affiliation(s)
- Hung-Wen Kao
- From the Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (H-WK, H-WC, S-WC, G-SH, H-HH, C-YC); Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan (H-WK); Institute of Statistical Science, Academia, Taipei, Taiwan Sinica (ML); Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan (H-WC, S-WC); Department of Medical Imaging, Taipei Medical University Hospital, Taipei, Taiwan (H-SL, P-HT, C-YC); Imaging Research Center, Taipei Medical University, Taipei, Taiwan (H-SL, P-HT, C-YC); Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei, Taiwan (H-SL, P-HT, C-YC); Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan (M-CC); and Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (G-SP)
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Lee SJ, Hong JM, Lee M, Huh K, Choi JW, Lee JS. Cerebral arterial calcification is an imaging prognostic marker for revascularization treatment of acute middle cerebral arterial occlusion. J Stroke 2015; 17:67-75. [PMID: 25692109 PMCID: PMC4325637 DOI: 10.5853/jos.2015.17.1.67] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/15/2014] [Accepted: 12/18/2014] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND AND PURPOSE To study the significance of intracranial artery calcification as a prognostic marker for acute ischemic stroke patients undergoing revascularization treatment after middle cerebral artery (MCA) trunk occlusion. METHODS Patients with acute MCA trunk occlusion, who underwent intravenous and/or intra-arterial revascularization treatment, were enrolled. Intracranial artery calcification scores were calculated by counting calcified intracranial arteries among major seven arteries on computed tomographic angiography. Patients were divided into high (HCB; score ≥3) or low calcification burden (LCB; score <3) groups. Demographic, imaging, and outcome data were compared, and whether HCB is a prognostic factor was evaluated. Grave prognosis was defined as modified Rankin Scale 5-6 for this study. RESULTS Of 80 enrolled patients, the HCB group comprised 15 patients, who were older, and more commonly had diabetes than patients in the LCB group. Initial National Institutes of Health Stroke Scale (NIHSS) scores did not differ (HCB 13.3±2.7 vs. LCB 14.6±3.8) between groups. The final good reperfusion after revascularization treatment (thrombolysis in cerebral infarction score 2b-3, HCB 66.7% vs. LCB 69.2%) was similarly achieved in both groups. However, the HCB group had significantly higher NIHSS scores at discharge (16.0±12.3 vs. 7.9±8.3), and more frequent grave outcome at 3 months (57.1% vs. 22.0%) than the LCB group. HCB was proven as an independent predictor for grave outcome at 3 months when several confounding factors were adjusted (odds ratio 4.135, 95% confidence interval, 1.045-16.359, P=0.043). CONCLUSIONS Intracranial HCB was associated with grave prognosis in patients who have undergone revascularization for acute MCA trunk occlusion.
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Affiliation(s)
- Seong-Joon Lee
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Korea
| | - Ji Man Hong
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Korea
| | - Manyong Lee
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Korea
| | - Kyoon Huh
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Korea
| | - Jin Wook Choi
- Department of Radiology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Korea
| | - Jin Soo Lee
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, Suwon, Korea
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Herrington W, Haynes R, Staplin N, Emberson J, Baigent C, Landray M. Evidence for the prevention and treatment of stroke in dialysis patients. Semin Dial 2014; 28:35-47. [PMID: 25040468 PMCID: PMC4320775 DOI: 10.1111/sdi.12281] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The risks of both ischemic and hemorrhagic stroke are particularly high in dialysis patients of any age and outcomes are poor. It is therefore important to identify strategies that safely minimize stroke risk in this population. Observational studies have been unable to clarify the relative importance of traditional stroke risk factors such as blood pressure and cholesterol in those on dialysis, and are affected by biases that usually make them an inappropriate source of data on which to base therapeutic decisions. Well-conducted randomized trials are not susceptible to such biases and can reliably investigate the causal nature of the association between a potential risk factor and the outcome of interest. However, dialysis patients have been under-represented in the cardiovascular trials which have proven net benefit of commonly used preventative treatments (e.g., antihypertensive treatments, low-dose aspirin, carotid revascularization, and thromboprophylaxis for atrial fibrillation), and there remains uncertainty about safety and efficacy of many of these treatments in this high-risk population. Moreover, the efficacy of renal-specific therapies that might reduce cardiovascular risk, such as modulators of mineral and bone disorder, online hemodiafiltration, and daily (nocturnal) hemodialysis, have not been tested in adequately powered trials. Recent trials have also demonstrated how widespread current practices could be causing stroke. Therefore, it is important that reliable information on the prevention and treatment of stroke (and other cardiovascular disease) in dialysis patients is generated by performing large-scale randomized trials of many current and future treatments.
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Affiliation(s)
- William Herrington
- Clinical Trial Service Unit and Epidemiological Studies Unit (CTSU), Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom; Oxford Kidney Unit, Churchill Hospital, Oxford University Hospitals NHS Trust, Oxford, United Kingdom
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41
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Kang K. Serum calcium and phosphate concentrations and intracranial atherosclerosis. Atherosclerosis 2014; 232:249-53. [DOI: 10.1016/j.atherosclerosis.2013.11.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 10/16/2013] [Accepted: 11/05/2013] [Indexed: 11/29/2022]
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Pikija S, Magdič J, Hojs-Fabjan T. Calcifications of vertebrobasilar arteries on CT: detailed distribution and relation to risk factors in 245 ischemic stroke patients. BIOMED RESEARCH INTERNATIONAL 2013; 2013:918970. [PMID: 23984421 PMCID: PMC3747337 DOI: 10.1155/2013/918970] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/07/2013] [Accepted: 07/08/2013] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Intracranial atherosclerosis is responsible for a substantial proportion of strokes worldwide but its detailed morphology in the vertebrobasilar arteries (VBA) is unknown. SUBJECT AND METHODS Cases with ischemic strokes were retrospectively sought from the hospital database. Native CT scans were assessed for vessel area and intracranial artery calcifications (ICACs) in VBA. The calcifications were classified as focal (FCs), crescent, and circular. RESULTS 245 patients (mean age: 77.1 ± 10.2 years, 57.6% females) had visible ICACs. Calcifications were found in 75.9%, 63.3%, and 17.1% in the left vertebral artery (LVA), the right vertebral artery (RVA), and the basilar artery (BA), respectively. FCs were present in 91.0%, 90.3%, and 100.0%; crescents in 30.3%, 29.0%, and 7.1%, and circulars in 6.4%, 4.8%, and 0.0% ) and 46 (27.4%) for RVA and LVA, respectively. Risk factors associated with vertical dispersion of ICACs were male gender (OR : 2.69, 1.38-5.28) and diabetes of the RVA, LVA, and BA, respectively. FCs in dorsolateral quadrant were least prevalent in both vertebral arteries (VAs): 46 (29.8%(OR : 2.28, 1.04-4.99). CONCLUSIONS FCs in VAs are least prevalent in dorsolateral quadrants. The vertical dispersion of ICACs seems to be associated with the male gender and diabetes.
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Affiliation(s)
- Slaven Pikija
- Department of Neurology, University Medical Centre Maribor, Ljubljanska Cesta 5, 2000 Maribor, Slovenia.
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Bugnicourt JM, Tchouata-Ngandjouc L, Beugre K, Chillon JM, Godefroy O. [A comparison of stroke patients' characteristics between a sub-Saharan Africa population (Abidjan) and a French stroke unit (Amiens): An observational study]. Rev Neurol (Paris) 2013; 169:258-65. [PMID: 23415159 DOI: 10.1016/j.neurol.2012.07.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 05/03/2012] [Accepted: 07/19/2012] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Stroke characteristics in Sub-Saharan Africa (SSA) differ from developed countries. However, SSA subjects undergo epidemiological and demographic transition and it appears that the prevalence of vascular risk factors (RF) increases in this population. Here we aimed to compare stroke patients' characteristics between a SSA hospital (Cocody University Hospital, Abidjan, Côte d'Ivoire) and a French stroke unit (Amiens University Hospital, Amiens, France). METHODS This retrospective study included all consecutive stroke patients admitted between January and May 2008 (Cocody University Hospital, Abidjan, Côte d'Ivoire) and between October and December 2008 (Amiens University Hospital, Amiens, France). We assessed each patient's demographic details, RF, and CT confirmed pathological stroke type. The glomerular filtration rate (GFR) was estimated using the four-component Modification of Diet in Renal Disease (MDRD) equation and CKD was defined as a GFR less than 60ml/min/1.73 m(2). RESULTS One hundred and ninety five patients were included (Amiens: 92; Abidjan: 103) with a mean age of 63±14 years. Patients in Amiens had more known vascular RF than African patients, whereas African patients had more RF discovered during hospitalisation. Furthermore, CKD was significantly more common in SSA patients (43% vs 24%, P=0.001). More African than European patients had cerebral hemorrhage (34% vs 8%, P<0.001) but acute stroke mortality and treatments at hospital discharge were similar between the two hospitals. Finally, a high proportion of patients in Abidjan suffered from cervical atherosclerosis, although it was significantly lower than patients in Amiens (37% vs 67%, P<0.001). CONCLUSION Although this was a hospital-based study, CKD appears to be very common in SSA acute stroke patients. These findings could partly explain the high prevalence of cervical atherosclerosis found in this population. These results warrant confirmation in prospective studies.
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Affiliation(s)
- J-M Bugnicourt
- Laboratoire de neurosciences fonctionnelles et pathologies, EA 4559, centre hospitalier universitaire d'Amiens, UFR de médecine, 3, rue des Louvels, 80054 Amiens cedex 1, France.
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Bugnicourt JM, Godefroy O, Chillon JM, Choukroun G, Massy ZA. Cognitive disorders and dementia in CKD: the neglected kidney-brain axis. J Am Soc Nephrol 2013; 24:353-63. [PMID: 23291474 DOI: 10.1681/asn.2012050536] [Citation(s) in RCA: 398] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Epidemiologic data suggest that individuals at all stages of CKD have a higher risk of developing cognitive disorders and dementia. This risk is generally explained by the high prevalence of both symptomatic and subclinical ischemic cerebrovascular lesions. However, other potential mechanisms, including direct neuronal injury by uremic toxins, could also be involved, especially in the absence of obvious cerebrovascular disease. We discuss the prevalence and characteristics of cognitive disorders and dementia in patients with CKD, brain imaging findings, and traditional and nontraditional risk factors. Understanding the pathophysiologic interactions between renal impairment and brain function is important in order to minimize the risk for future cognitive impairment.
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Affiliation(s)
- Jean-Marc Bugnicourt
- Service de Neurologie, CHU Amiens, Place Victor Pauchet F-80054, Amiens Cedex 1, France.
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Park KY, Chung PW, Kim YB, Moon HS, Suh BC, Yoon WT. Increased Pulsatility Index Is Associated with Intracranial Arterial Calcification. Eur Neurol 2013; 69:83-8. [DOI: 10.1159/000342889] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Accepted: 08/06/2012] [Indexed: 11/19/2022]
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Abstract
Poor renal function is associated with cardiovascular complications attributable to large-vessel diseases such as arterial calcification, heart failure, myocardial infarction, and cardiac mortality. The aim of this study was to evaluate the association between renal function and intracranial arterial stenosis (IAS). We analyzed the records of 283 stroke-free Korean adults (≥45 years of age) who underwent brain 3D time-of-flight magnetic resonance angiography as part of their voluntary health check. The presence of stenosis in the basilar artery and in the horizontal portion of the middle cerebral artery was defined as narrowing of the luminal diameter by 25% or more or occlusion on brain magnetic resonance angiography. We estimated the glomerular filtration rate using the Modification of Diet in Renal Disease equation. The subjects were 133 men and 150 women (mean age of 56 ± 7 years). One hundred sixty-six subjects (59 %) had IAS. The serum creatinine concentration in the highest quartile compared with the lowest quartile was associated with increased prevalence of IAS; the eGFR in the upper two quartiles compared with the lowest quartile were associated with decreased prevalence of IAS. The prevalence of subjects with a high eGFR decreased significantly with the severity of IAS. In conclusion, poor renal function is associated with the presence and the degree of IAS in stroke-free Korean adults.
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Acar A, Cevik MU, Arıkanoglu A, Evliyaoglu O, Basarılı MK, Uzar E, Ekici F, Yucel Y, Tasdemir N. Serum levels of calcification inhibitors in patients with intracerebral hemorrhage. Int J Neurosci 2012; 122:227-32. [PMID: 22115341 DOI: 10.3109/00207454.2011.642039] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The vascular calcification regulators and inflammatory markers including fetuin-A, osteopontin (OPN), and matrix Gla protein (MGP) may play an important role in the development of intracerebral hemorrhages (ICHs). So far, the relationship between these parameters and ICH has not been studied. Therefore, this study was designed to elucidate whether fetuin-A, MGP, and OPN are involved in the pathophysiology of ICH. The ICH group consisted of 27 consecutive patients with spontaneous ICH evaluated in the neurology intensive care unit within the first 24 hours from the onset of the stroke. The serum OPN levels were significantly increased in patients with ICH compared to the controls. On the other hand, the serum MGP and fetuin-A levels were significantly decreased in the patients with ICH in comparison to the controls. In the patients with ICH, the serum MGP levels of the nonsurvivors were statistically significantly lower than the MGP levels of the survivors. In conclusion, the change in serum fetuin-A, MGP, and OPN levels after ICH indicates that these parameters play a role in the pathophysiological processes leading to an ICH. Measurement of the serum MGP levels may also be of value to estimate mortality.
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Affiliation(s)
- Abdullah Acar
- Department of Neurology, School of Medicine, Dicle University, Diyarbakir, Turkey.
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Vogels SC, Emmelot-Vonk MH, Verhaar HJ, Koek H(DL. The association of chronic kidney disease with brain lesions on MRI or CT: A systematic review. Maturitas 2012; 71:331-6. [DOI: 10.1016/j.maturitas.2012.01.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/13/2012] [Accepted: 01/13/2012] [Indexed: 10/14/2022]
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Bugnicourt JM, Leclercq C, Chillon JM, Diouf M, Deramond H, Canaple S, Lamy C, Massy ZA, Godefroy O. Presence of intracranial artery calcification is associated with mortality and vascular events in patients with ischemic stroke after hospital discharge: a cohort study. Stroke 2011; 42:3447-53. [PMID: 21940971 DOI: 10.1161/strokeaha.111.618652] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND PURPOSE Although intracranial artery calcification (IAC) has been reported to be a risk factor for ischemic stroke, the prognostic implications of IAC in stroke outcome are unknown. The purpose of this study was to determine the association between IAC and risk of vascular events and death in patients with stroke after hospital discharge. METHODS All patients with ischemic stroke over a 1-year period were included (n=302). IAC, assessed by multidetector CT, was defined as hyperdense foci (peak density>130 Hounsfield units) and assessed in the 7 major cerebral arteries. The IAC scores ranged from 0 (no calcification) to 7. Follow-up information on major clinical events (including fatal or nonfatal ischemic stroke, cardiac and peripheral artery events, and all-cause death) was obtained by means of a structured phone interview. RESULTS IAC was present in 260 patients (83%). With a mean follow-up of 773±223 days, 88 major clinical events occurred in 67 patients (22%): 45 new ischemic vascular events (ischemic stroke: n=22; cardiac event: n=15; peripheral artery event: n=8) and 43 deaths from any cause. Patients with the highest IAC scores had significantly higher rates of death and vascular events than those with the lowest IAC scores (log rank test, P=0.029). In the Cox proportional hazards regression model, the IAC score was significantly associated with major clinical events (hazard ratio, 1.34; 95% CI, 1.11-1.61; P=0.002). CONCLUSIONS In patients with ischemic stroke, IAC detection may constitute a simple marker of a high risk of future major clinical events.
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Affiliation(s)
- Jean-Marc Bugnicourt
- Service de Neurologie, CHU Amiens, France, Place Victor Pauchet, F-80054 Amiens Cedex 1, France.
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Relation between intracranial artery calcifications and aortic atherosclerosis in ischemic stroke patients. J Neurol 2010; 257:1338-43. [DOI: 10.1007/s00415-010-5528-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 03/05/2010] [Indexed: 11/27/2022]
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