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bilateral carotide artery stenosis

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https://www.readbyqxmd.com/read/28798352/soluble-epoxide-hydrolase-inhibition-promotes-white-matter-integrity-and-long-term-functional-recovery-after-chronic-hypoperfusion-in-mice
#1
Yuxue Chen, Hao Tian, Ensheng Yao, Yeye Tian, Huaqiu Zhang, Li Xu, Zhiyuan Yu, Yongkang Fang, Wei Wang, Peng Du, Minjie Xie
Chronic cerebral hypoperfusion induced cerebrovascular white matter lesions (WMLs) are closely associated with cognitive impairment and other neurological deficits. The mechanism of demyelination in response to hypoperfusion has not yet been fully clarified. Soluble epoxide hydrolase (sEH) is an endogenous key enzyme in the metabolic conversion and degradation of P450 eicosanoids called epoxyeicosatrienoic acids. Inhibition of sEH has been suggested to represent a prototype "combination therapy" targeting multiple mechanisms of stroke injury with a single agent...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28781891/vascular-occlusions-following-ocular-surgical-procedures-a-clinical-observation-of-vascular-complications-after-ocular-surgery
#2
Charlotte Fischer, Anne Bruggemann, Annette Hager, Josep Callizo Planas, Johann Roider, Hans Hoerauf
BACKGROUND: Ocular vascular occlusions following intraocular procedures are a rare complication. We report a case series of patients with retinal vascular occlusions or anterior ischemic optic neuropathy (AION) after anterior and posterior segment surgery and demonstrate possible risk factors. METHODS: Observational case series. RESULTS: In ten patients, vascular occlusions were observed within ten weeks after intraocular surgery: branch retinal arterial occlusion (BRAO) (n = 2), central retinal artery occlusion (CRAO) (n = 2), central retinal vein occlusion (CRVO) (n = 1), branch retinal vein occlusion (BRVO) (n = 1), anterior ischemic optic neuropathy (AION) (n = 3), and combined central artery and vein occlusion (n = 1)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28755277/chronic-remote-ischemic-conditioning-is-cerebroprotective-and-induces-vascular-remodeling-in-a-vcid-model
#3
Mohammad Badruzzaman Khan, Sherif Hafez, Md Nasrul Hoda, Babak Baban, Jesse Wagner, Mohamed E Awad, Hasith Sangabathula, Stephen Haigh, Mohammed Elsalanty, Jennifer L Waller, David C Hess
Vascular contributions to cognitive impairment and dementia (VCID) make up 50% of the cases of dementia. The purpose of this study was to determine the effect of chronic remote ischemic conditioning (C-RIC) on improving long-term (6 months) outcomes and cerebral blood flow (CBF) and collateral formation in a mouse model of VCID. Adult C57BL/6J male mice (10 weeks) were randomly assigned to four different groups: (1) sham-bilateral carotid artery stenosis (BCAS), (2) BCAS + sham RIC, (3) BCAS+C-RIC for 1 month (1MO), and (4) BCAS+C-RIC-4 months (4MO)...
July 28, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28745664/-predictors-of-cerebral-complications-during-carotid-endarterectomy
#4
O V Kamenskaya, I Yu Loginova, V V Lomivorotov
AIM: To evaluate the prognostic value of parameters of cerebral oxygenation in estimation of the risk of ischemic stroke (IS) in perioperative and early postoperative phase of carotid endarterectomy (CEE). MATERIAL AND METHODS: Four hundred and sixty-six patients with hemodynamically significant atherosclerotic lesion of arteries of the brachiocephalic system, who underwent CEE with bilateral monitoring of cerebral oxygenation (rSO2), were enrolled. The end-point of the study was cerebral complications in perioperative and early postoperative phase...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28716303/early-results-of-endovascular-treatment-of-patients-with-bilateral-stenoses-of-the-internal-carotid-arteries-using-proximal-protection-systems-at-30-day-follow-up
#5
Paweł Latacz, Marian Simka, Tadeusz Popiela, Marek Kazibudzki, Tomasz Mrowiecki
BACKGROUND: Although surgical endarterectomy remains the treatment of choice for carotid artery stenosis, carotid artery stenting (CAS) with use of proximal protection systems (PPS) plays an very important role as alternative treatment modality, especially in patients with critical, symptomatic lesions. This study was single-centre study to evaluate the technical and clinical success of proximal protection devices as the first choice for embolic protection in symptomatic and asymptomatic carotid stenosis in patients with bilateral, advanced lesions of carotid arteries (bilateral stenoses or stenosis and occlusion)...
July 8, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28697940/characterization-of-perioperative-contralateral-stroke-after-carotid-endarterectomy
#6
W Darrin Clouse, Emel A Ergul, Virendra I Patel, R Todd Lancaster, Glenn M LaMuraglia, Richard P Cambria, Mark F Conrad
OBJECTIVE: Contralateral stroke is an infrequent cause of perioperative stroke after carotid endarterectomy (CEA). Whereas the risks of ipsilateral stroke complicating CEA have been discriminated, factors that lead to contralateral stroke are poorly defined. The purpose of this study was to identify the risk of perioperative (30-day) contralateral stroke after CEA as well as predisposing preoperative and operative factors. Its specific effect on long-term survival was interrogated. METHODS: The Vascular Study Group of New England (VSGNE) was queried from April 1, 2003, to February 29, 2016, for all CEAs...
July 8, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28684367/endovascular-therapy-for-the-steal-phenomenon-due-to-the-innominate-artery-severe-stenosis-and-bilateral-internal-carotid-artery-severe-stenosis-case-report
#7
Shuta Aketa, Daisuke Wajima, Masahiro Kishi, Yudai Morisaki, Taiji Yonezawa, Ichiro Nakagawa, Hiroyuki Nakase
BACKGROUND: Symptomatic innominate artery stenosis as hemodynamic bilateral cerebral ischemia is uncommon. We present a rare case of an innominate artery origin severe stenosis and bilateral internal carotid artery (ICA) severe stenosis, inducing hemodynamic cerebral ischemia after ipsilateral axillary artery-bilateral femoral artery bypass, and treated with stent replacement of innominate artery and right ICA. CASE REPORT: A 64-year-old female, who had received previously right axillary artery-bilateral femoral artery anastomosis for abdominal aorta high obstruction, had been suffered from chronic dizziness, so visited our department...
July 3, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28670274/differentially-severe-cognitive-effects-of-compromised-cerebral-blood-flow-in-aged-mice-association-with-myelin-degradation-and-microglia-activation
#8
Gilly Wolf, Amit Lotan, Tzuri Lifschytz, Hagar Ben-Ari, Tirzah Kreisel Merzel, Pavel Tatarskyy, Michael Valitzky, Ben Mernick, Elad Avidan, Nickolay Koroukhov, Bernard Lerer
Bilateral common carotid artery stenosis (BCAS) models the effects of compromised cerebral blood flow on brain structure and function in mice. We compared the effects of BCAS in aged (21 month) and young adult (3 month) female mice, anticipating a differentially more severe effect in the older mice. Four weeks after surgery there was a significant age by time by treatment interaction on the radial-arm water maze (RAWM; p = 0.014): on the first day of the test, latencies of old mice were longer compared to the latencies of young adult mice, independent of BCAS...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28667120/chronic-cerebral-hypoperfusion-alters-amyloid-%C3%AE-peptide-pools-leading-to-cerebral-amyloid-angiopathy-microinfarcts-and-hemorrhages-in-tg-swdi-mice
#9
Natalia Salvadores, James L Searcy, Philip R Holland, Karen Horsburgh
Cerebral hypoperfusion is an early feature of Alzheimer's disease (AD) that influences the progression from mild cognitive impairment to dementia. Understanding the mechanism is of critical importance in the search for new effective therapies. We hypothesised that cerebral hypoperfusion promotes the accumulation of amyloid-β (Ab) and degenerative changes in the brain and is a potential mechanism contributing to development of dementia. To address this we studied the effects of chronic cerebral hypoperfusion induced by bilateral carotid artery stenosis on Ab peptide pools in a transgenic mouse model of AD (Tg-SwDI) at an age when fibrillar amyloid burden is minimal...
June 30, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28664013/erdheim-chester-disease-involving-the-central-nervous-system-with-the-unique-appearance-of-a-coated-vertebral-artery
#10
Hime Suzuki, Masahiko Wanibuchi, Katsuya Komatsu, Yukinori Akiyama, Takeshi Mikami, Shintaro Sugita, Tadashi Hasegawa, Mitsunori Kaya, Kohichi Takada, Nobuhiro Mikuni
Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis. It is characterized by multiple xanthogranulomatous masses throughout the body, predominantly in the tibia. One of the characteristic radiological findings of the lesions associated with ECD is a "coated artery," which is often observed in the aorta. Although approximately one-fourth of ECD cases involve the central nervous system (CNS), an intracranial-coated artery has only been reported in four cases. We report a case of ECD that involves the CNS and has the unique appearance of a coated vertebral artery (VA)...
October 2016: NMC Case Rep J
https://www.readbyqxmd.com/read/28655874/long-term-cilostazol-treatment-reduces-gliovascular-damage-and-memory-impairment-in-a-mouse-model-of-chronic-cerebral-hypoperfusion
#11
Akihiro Kitamura, Yasmina Manso, Jessica Duncombe, James Searcy, Juraj Koudelka, Margaret Binnie, Scott Webster, Ross Lennen, Maurits Jansen, Ian Marshall, Masafumi Ihara, Raj N Kalaria, Karen Horsburgh
Chronic cerebral hypoperfusion is a major cause of age-related vascular cognitive impairment. A well-characterised mouse model has shown that hypoperfusion results in gliovascular and white matter damage and impaired spatial working memory. In this study, we assessed whether cilostazol, a phosphodiesterase III inhibitor, could protect against these changes. Adult, male C57Bl/6J mice were subjected to bilateral common carotid artery stenosis or a sham operation and fed normal or cilostazol diet for three months...
June 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28641891/inter-arm-systolic-blood-pressure-differences-relations-with-future-vascular-events-and-mortality-in-patients-with-and-without-manifest-vascular-disease
#12
Guido Kranenburg, Wilko Spiering, Pim A de Jong, L Jaap Kappelle, Gert Jan de Borst, Maarten J Cramer, Frank L J Visseren, Victor Aboyans, Jan Westerink
BACKGROUND: Inter-arm systolic blood pressure difference (SBPD) is an easily obtained patient characteristic which relates to vascular disease. We aimed to identify determinants of large inter-arm SBPD and to investigate the relation between inter-arm SBPD and vascular events in patients with and without manifest vascular disease. METHODS: In a cohort of 7344 patients with manifest vascular disease or vascular risk factors alone enrolled in the Second Manifestations of ARTerial disease (SMART) study, single bilateral non-simultaneous blood pressure measurements were performed...
June 13, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28637413/early-phase-18f-av-45-pet-imaging-can-detect-crossed-cerebellar-diaschisis-following-carotid-artery-stenosis-and-cerebral-hypoperfusion
#13
Tsong-Hai Lee, Kuo-Lun Huang, Ting-Yu Chang, Meng-Yang Ho, Shiaw-Pyng Wey, Chia-Ju Hsieh, Tzu-Chen Yen, Kun-Ju Lin, Ing-Tsung Hsiao
Background Carotid artery stenosis (CAS) may induce cerebral hypoperfusion. Early-phase 18F-Florbetapir (AV-45/Amyvid, 18F-AV-45) positron emission tomography (PET) imaging can provide perfusion-like property (pAV-45) for the estimation of cerebral blood flow (CBF). Supra-tentorial lesions may cause decreased blood flow and metabolism in the contralateral cerebellum known as crossed cerebellar diaschisis (CCD). Objective To study the occurrence of CCD after CAS using pAV-45 PET. Methods Eleven healthy controls and 21 patients with unilateral CAS were studied...
June 21, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28625130/remote-ischemic-conditioning-improves-cognitive-function-during-cerebral-vascular-injury-through-the-induction-of-autophagy
#14
Hongjuan Wang, Qinglin Zhang, Yang Xu, Hetao Bian, Cuiping Si, Zhongrui Yan, Meijia Zhu
BACKGROUND: The most valid model for vascular cognitive impairment (VCI) is the mouse bilateral common carotid artery stenosis (BCAS), whose behavioral outcomes is supposedly affected by the remote ischemic conditioning (RIC) through the induction of autophgy. We hope to determine whether RIC contributes to the neuroprotection through the induction of autophagy.. METHODS: Wastar male mice were randomized into three groups including the Sham, the BCAS and the RIC+BCAS groups...
June 18, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28620501/efficacy-of-lenvatinib-in-a-patient-with-anaplastic-thyroid-cancer
#15
Kazuyuki Oishi, Daisuke Takabatake, Yuichi Shibuya
We experienced a case of an 82-year-old woman who presented to our hospital with a 1-month history of dysphagia and dyspnea. Cervical contrast-enhanced computed tomography revealed diffuse thyroid neoplasms causing significant tracheal stenosis with tumors, particularly of the superior mediastinum, which were associated with an embolism of the brachiocephalic vein and suspected invasion to the bilateral common carotid arteries. Anaplastic thyroid cancer (ATC) was diagnosed by fine-needle aspiration; thus, emergency tracheostomy and gastrostomy were performed...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28606007/dimethyl-fumarate-improves-white-matter-function-following-severe-hypoperfusion-involvement-of-microglia-macrophages-and-inflammatory-mediators
#16
Jill H Fowler, Jamie McQueen, Philip R Holland, Yasmina Manso, Martina Marangoni, Fiona Scott, Emma Chisholm, Robert H Scannevin, Giles E Hardingham, Karen Horsburgh
The brain's white matter is highly vulnerable to reductions in cerebral blood flow via mechanisms that may involve elevated microgliosis and pro-inflammatory pathways. In the present study, the effects of severe cerebral hypoperfusion were investigated on white matter function and inflammation. Male C57Bl/6J mice underwent bilateral common carotid artery stenosis and white matter function was assessed at seven days with electrophysiology in response to evoked compound action potentials (CAPs) in the corpus callosum...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28599682/bilateral-ocular-ischemia-induced-blindness-as-a-presenting-manifestation-of-takayasu-arteritis-a-case-report
#17
Pedro Pallangyo, Emmanuel Epafra, Paulina Nicholaus, Frederick Lyimo, Parvina Kazahura, Mohamed Janabi
BACKGROUND: Takayasu arteritis is a granulomatous panarteritis that predominantly affects the aorta and its major branches. The initial manifestations of this large-vessel vasculitis are usually nonspecific; however, as the disease progresses, typical symptoms of arterial occlusion, aneurysmal formation, and vascular pain become evident. Ischemic ocular complications of Takayasu arteritis which could lead to complete loss of vision are not uncommon and depend on the obliterated portion(s) of carotid(s), the intensity and rate of progression of ocular vascular insufficiency, and sufficiency of the collateral blood supply to the eye...
June 10, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28587369/efficacy-and-indications-of-transradial-and-transfemoral-approaches-for-peripheral-artery-stent-implantation
#18
Peng Chen, Huijie Li, Chunyu Zeng, Yuqiang Fang, Weibin Shi, Xiaoqun Zhang, Chengming Yang
The transradial approach (TRA) has become an attractive alternative to the transfemoral approach (TFA) in percutaneous coronary intervention. To date, however, these two approaches have not been systematically compared in various percutaneous peripheral artery interventions (PPAIs). In the present study 258 patients with peripheral artery disease that underwent PPAI via the TRA (n=75) or the TFA (n=183) were analyzed. Clinical factors and outcomes in these two groups were compared. The puncture time was significantly longer (P<0...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28578987/chronic-cerebral-hypoperfusion-independently-exacerbates-cognitive-impairment-within-the-pathopoiesis-of-parkinson-s-disease-via-microvascular-pathologys
#19
Hongmei Tang, Yuyuan Gao, Qingxi Zhang, Kun Nie, Ruiming Zhu, Liang Gao, Shujun Feng, Limin Wang, Jiehao Zhao, Zhiheng Huang, Yuhu Zhang, Lijuan Wang
To date, the role of microvascular pathology and chronic cerebral hypoperfusion (CHH) in the development of mild cognitive impairment in Parkinson's disease (PD-MCI) is unclear. Here, we investigated how the combined injury through interaction of CHH and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) toxicity act as an exacerbating element to damagae cognitive fuction in a mouse model. In the present study, C57BL/6 mice underwent MPTP injection. Subjects were classified into a PD with normal cognitive performance (PDCN) group or a PD-MCI group using the Morris Water Maze test...
June 1, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28576626/carotid-artery-screening-at-the-time-of-coronary-artery-bypass-does-it-influence-neurological-outcomes
#20
P Narayan, Md W Khan, D Das, R Guha Biswas, M Das, E Rupert
OBJECTIVE: Patients undergoing coronary artery bypass graft (CABG) are recommended to undergo carotid duplex study in presence of risk factors. Aim of the study was to quantify the relationship between risk factors and presence of carotid disease and examine if screening influenced outcomes. METHODS: Over a four year period in a single institution, 4364 consecutive patients presenting for primary isolated CABG were enrolled to undergo carotid duplex scanning. Patients were grouped as no significant carotid artery stenosis (<50%), moderate stenosis (50%-70%) and severe stenosis (>70%)...
September 15, 2017: International Journal of Cardiology
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