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Liou JW, Liou M, Cheng PE. Modeling Categorical Variables by Mutual Information Decomposition. ENTROPY (BASEL, SWITZERLAND) 2023; 25:e25050750. [PMID: 37238505 DOI: 10.3390/e25050750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023]
Abstract
This paper proposed the use of mutual information (MI) decomposition as a novel approach to identifying indispensable variables and their interactions for contingency table analysis. The MI analysis identified subsets of associative variables based on multinomial distributions and validated parsimonious log-linear and logistic models. The proposed approach was assessed using two real-world datasets dealing with ischemic stroke (with 6 risk factors) and banking credit (with 21 discrete attributes in a sparse table). This paper also provided an empirical comparison of MI analysis versus two state-of-the-art methods in terms of variable and model selections. The proposed MI analysis scheme can be used in the construction of parsimonious log-linear and logistic models with a concise interpretation of discrete multivariate data.
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Affiliation(s)
- Jiun-Wei Liou
- Department of Electrical Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan
| | - Michelle Liou
- Institute of Statistical Science, Academia Sinica, Taipei 115, Taiwan
| | - Philip E Cheng
- Institute of Statistical Science, Academia Sinica, Taipei 115, Taiwan
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2
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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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3
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Taoussi R, Khattab H, Jadib A, Daki A, Bendahou H, Sabiri M, Manjra SE, Lezar S, Essodegui F. Transient ischemic attack due to multiple spontaneous calcified embolus of the cerebral arteries on a calcified mitral and aortic stenosis. Radiol Case Rep 2022; 17:2899-2901. [PMID: 35733951 PMCID: PMC9207546 DOI: 10.1016/j.radcr.2022.05.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/17/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Reda Taoussi
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Hajar Khattab
- Department of Neurology, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Abdelhamid Jadib
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
- Corresponding author.
| | - Anouar Daki
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Hajar Bendahou
- Department of Cardiology, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Mouna Sabiri
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Samia El Manjra
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Samira Lezar
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
| | - Fatiha Essodegui
- Central Imaging Department, Ibn Rochd University Hospital, 1 quartier des hopitaux, Casablanca, Morocco
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Wang X, Chen X, Chen Z, Zhang M. Arterial Calcification and Its Association With Stroke: Implication of Risk, Prognosis, Treatment Response, and Prevention. Front Cell Neurosci 2022; 16:845215. [PMID: 35634461 PMCID: PMC9130460 DOI: 10.3389/fncel.2022.845215] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 02/28/2022] [Indexed: 01/07/2023] Open
Abstract
Stroke is a leading cause of death worldwide. Vascular calcification (VC), defined as deposition of calcium-phosphate complexes in the vessels, is considered as the characteristic of vascular aging. Calcifications at different vessel layers have different implications. Intimal calcification is closely related to atherosclerosis and affects plaque stability, while medial calcification can cause arterial stiffening and reduce compliance. Accumulating evidence suggested that arterial calcifications, including calcifications in the intracranial artery, coronary artery, and carotid artery, are associated with the risk, prognosis, and treatment response of stroke. VC can not only serve as a marker of atherosclerosis, but cause cerebral hemodynamic impairment. In addition, calcifications in large arteries are associated with cerebral small vessel disease. In this review, we summarize the findings of recently published studies focusing on the relationship between large artery calcification and the risk, prognosis, treatment response, and prevention of stroke and also discuss possible mechanisms behind those associations.
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Affiliation(s)
- Xiang Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Xinghang Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zhuohui Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Mengqi Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Mengqi Zhang,
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5
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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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Hui X, Wang M, Zhang L, Liu J, Wang M, Hu W, Zhang T, Zhao S, Geng S, Wang X, Zheng Z. Conditioned Media of Choroid Plexus Epithelium Cells Attenuates High Pi-Induced Calcification of MOVAS Cells by Inhibiting ROS-Mediated Signal Pathways. Front Physiol 2021; 12:607739. [PMID: 33613308 PMCID: PMC7892975 DOI: 10.3389/fphys.2021.607739] [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: 10/01/2020] [Accepted: 01/11/2021] [Indexed: 11/23/2022] Open
Abstract
Vascular calcification was an independent risk of cardiovascular and cerebrovascular diseases (CCDs). Studies reported that conditioned media of choroid plexus epithelium cells (CPECs-CM) showed potential neuroprotective effects. However, the protective effect of CPECs-CM against vascular calcification (VC) has not been reported yet. Herein, high phosphate (HPi)-induced calcification model in mouse aortic vascular smooth muscle cells (MOVAS) was established, and the protective effects and underlying mechanism of CPECs-CM against HPi-induced calcification were explored. The results indicated that CPEC cells were successfully isolated and cultured, and CPECs-CM co-treatment significantly inhibited HPi-induced calcification of MOVAS cells through blocking alkaline phosphatase activity and expression. CPECs-CM co-treatment also suppressed reactive oxide species-mediated DNA damage in HPi-treated MOVAS cells. Moreover, dysfunction of MAPKs and PI3K/AKT pathways both contributed to HPi-induced calcification of MOVAS cells, and CPECs-CM co-treatment attenuated HPi-induced calcification by normalizing MAPKs and PI3K/AKT expression. Taken together, our findings provide evidence that CPECs-CM had the potential to inhibit vascular calcification with potent application in chemoprevention and chemotherapy of human CCD.
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Affiliation(s)
- Xin Hui
- Department of Neurology, Linyi People’s Hospital, Linyi, China
| | - Mei Wang
- Department of Ultrasonography, Taian City Central Hospital, Tai’an, China
| | - Lijun Zhang
- Department of Neurology, Linyi People’s Hospital, Linyi, China
| | - Ji Liu
- Department of Neurology, Linyi People’s Hospital, Linyi, China
| | - Mengen Wang
- Department of Neurology, Linyi People’s Hospital, Linyi, China
| | - Weiwei Hu
- Department of Ultrasonography, Taian City Central Hospital, Tai’an, China
| | - Tongtong Zhang
- Department of Neurology, Linyi People’s Hospital, Linyi, China
| | - Shijun Zhao
- Department of Neurology, Baotou Central Hospital, Baotou, China
| | - Shangyong Geng
- Department of Neurology, Baotou Central Hospital, Baotou, China
| | - Xianjun Wang
- Department of Neurology, Linyi People’s Hospital, Linyi, China
| | - Zuncheng Zheng
- Department of Rehabilitation, Tai’an City Central Hospital, Tai’an, China
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Bartstra JW, van den Beukel TC, Van Hecke W, Mali WPTM, Spiering W, Koek HL, Hendrikse J, de Jong PA, den Harder AM. Intracranial Arterial Calcification: Prevalence, Risk Factors, and Consequences: JACC Review Topic of the Week. J Am Coll Cardiol 2021; 76:1595-1604. [PMID: 32972537 DOI: 10.1016/j.jacc.2020.07.056] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/09/2020] [Accepted: 07/20/2020] [Indexed: 02/07/2023]
Abstract
Intracranial large and small arterial calcifications are a common incidental finding on computed tomography imaging in the general population. Here we provide an overview of the published reports on prevalence of intracranial arterial calcifications on computed tomography imaging and histopathology in relation to risk factors and clinical outcomes. We performed a systematic search in Medline, with a search filter using synonyms for computed tomography scanning, (histo)pathology, different intracranial arterial beds, and calcification. We found that intracranial calcifications are a frequent finding in all arterial beds with the highest prevalence in the intracranial internal carotid artery. In general, prevalence increases with age. Longitudinal studies on calcification progression and intervention studies are warranted to investigate the possible causal role of calcification on clinical outcomes. This might open up new therapeutic directions in stroke and dementia prevention and the maintenance of the healthy brain.
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Affiliation(s)
- Jonas W Bartstra
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
| | - Tim C van den Beukel
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Wim Van Hecke
- Department of Pathology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Willem P T M Mali
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Wilko Spiering
- Department of Vascular Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Huiberdina L Koek
- Department of Geriatrics, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Jeroen Hendrikse
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Pim A de Jong
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Annemarie M den Harder
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
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Erratum: Middle Cerebral Artery Calcification: Association With Ischemic Stroke: Erratum. Medicine (Baltimore) 2016; 95:e7493. [PMID: 31265607 PMCID: PMC5017254 DOI: 10.1097/01.md.0000479907.99874.93] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
[This corrects the article DOI: 10.1097/MD.0000000000002311.].
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