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Cerebrovascular Dysfunction

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https://www.readbyqxmd.com/read/29222909/an-emerging-role-of-astrocytes-in-vascular-contributions-to-cognitive-impairment-and-dementia-vcid
#1
REVIEW
Brittani R Price, Christopher M Norris, Pradoldej Sompol, Donna M Wilcock
Vascular contributions to cognitive impairment and dementia (VCID) is understood to be the second most common cause of dementia after Alzheimer's disease (AD), and is also a frequent co-morbidity with AD. While VCID is widely acknowledged as a key contributor to dementia, the mechanistic underpinnings of VCID remain poorly understood. In this review, we address the potential role of astrocytes in the pathophysiology of VCID. The vast majority of the blood vessels in the brain are surrounded by astrocytic end-feet...
December 9, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/29221748/hydroxyethyl-starch-is-associated-with-early-postoperative-delirium-in-patients-undergoing-esophagectomy
#2
Dae Myung Jung, Hyun Joo Ahn, Mikyung Yang, Jie Ae Kim, Duck Kyung Kim, Sangmin Maria Lee, Joo Hyun Park
OBJECTIVE: Postoperative delirium is associated with longer hospital stay and increased morbidities. Patients undergoing esophagectomy have a high chance of developing postoperative delirium because of their advanced age, comorbidities, and intensive care unit care. In this study, we investigated the risk factors of early postoperative delirium in patients undergoing esophagectomy, focusing on perioperative fluid type to test the hypothesis that colloids with high oncotic pressure and anti-inflammatory action would decrease the incidence of postoperative delirium compared with crystalloids...
December 5, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29219755/mitochondrial-abnormalities-related-to-the-dysfunction-of-circulating-endothelial-colony-forming-cells-in-moyamoya-disease
#3
Jung Won Choi, Sung Min Son, Inhee Mook-Jung, Youn Joo Moon, Ji Yeoun Lee, Kyu-Chang Wang, Hyun-Seung Kang, Ji Hoon Phi, Seung Ah Choi, Sangjoon Chong, Jayoung Byun, Seung-Ki Kim
OBJECTIVE Moyamoya disease (MMD) is a unique cerebrovascular disorder characterized by the progressive occlusion of the bilateral internal carotid arteries. Endothelial colony-forming cells (ECFCs), previously termed "endothelial progenitor cells," play an important role in the pathogenesis of MMD. In this study, the authors performed morphological and functional studies of the mitochondria of ECFCs from patients with MMD to present new insights into the pathogenesis of the disease. METHODS The morphology of ECFCs from 5 MMD patients and 5 healthy controls was examined under both a transmission electron microscope and a confocal laser scanning microscope...
December 8, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29215310/apolipoprotein-e4-mediates-insulin-resistance-associated-cerebrovascular-dysfunction-and-the-post-prandial-response
#4
Lance A Johnson, Eileen Ruth Torres, Sydney Weber Boutros, Esha Patel, Tunde Akinyeke, Nabil J Alkayed, Jacob Raber
Metabolic dysfunction, commonly a result of diets high in saturated fats and sugar, is associated with impaired cognitive function and an increased risk of age-related cognitive decline (ACD) and Alzheimer's disease (AD). Compared to the E3 isoform of apolipoprotein (apoE), the E4 isoform is a major genetic risk factor for ACD, AD, and for developing cognitive impairments following various environmental challenges, including dietary challenges such as a high-fat diet (HFD). Both insulin resistance (IR) and E4 are associated with metabolic and vascular impairments...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29209923/plasma-microparticles-in-alzheimer-s-disease-the-role-of-vascular-dysfunction
#5
Soheila Hosseinzadeh, Maryam Noroozian, Esmaeil Mortaz, Kazem Mousavizadeh
Cerebrovascular lesions, a potent stimulus for endothelial cell activation, trigger cognitive and degenerative changes and contribute to pathology of Alzheimer's disease (AD). Circulating microparticles (MPs) are actively involved in the pathogenesis of AD and cerebrovascular diseases, which share common vascular risk factors. We examined the plasma changes of endothelial MPs (EMPs) and platelet MPs (PMPs) in AD patients with vascular risk factors. The plasma Annexin V+ CD 41a- CD144+ EMPs and Annexin V+ CD41a+ CD144- PMPs of 37 patients with AD, with or without vascular risk factors (hypertension, diabetes, dyslipidemia, stroke, coronary artery disease, and smoking), and 10 age-matched controls were quantified by flow cytometry...
December 5, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29208342/pediatric-stroke-related-to-lyme-neuroborreliosis-data-from-the-swiss-neuropaediatric-stroke-registry-and-literature-review
#6
O Monteventi, M Steinlin, M Regényi, E Roulet-Perez, P Weber, J Fluss
BACKGROUND: Cerebrovascular complications of Lyme neuroborreliosis (LNB) are poorly documented in the paediatric population. METHODS: We performed a retrospective analysis from prospectively registered cases of acute ischemic stroke (AIS) from the Swiss NeuroPaediatric Stroke Registry (SNPSR) from 2000 to 2015. Only cases with serologically confirmed LNB were included. In addition, a literature review on paediatric stroke cases secondary to Lyme neuroborreliosis in the same time frame was performed...
November 24, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29205668/cerebrovascular-blood-pressure-autoregulation-monitoring-and-postoperative-transient-ischemic-attack-in-pediatric-moyamoya-vasculopathy
#7
Jennifer K Lee, Monica Williams, Michael Reyes, Edward S Ahn
BACKGROUND: Children with moyamoya vasculopathy are at high risk of perioperative cerebral ischemia or hyperperfusion. Maintaining blood pressure within the range of functional cerebrovascular blood pressure autoregulation might reduce the risk of perioperative neurologic injury. AIMS: We tested whether blood pressure autoregulation is associated with postoperative transient ischemic attack in a study of patients with pediatric moyamoya vasculopathy. METHODS: We conducted an observational study of 15 pediatric patients undergoing surgical revascularization with pial synangiosis...
December 5, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29204249/dietary-polyphenols-in-the-prevention-of-stroke
#8
REVIEW
A Tressera-Rimbau, S Arranz, M Eder, A Vallverdú-Queralt
Polyphenols have an important protective role against a number of diseases, such as atherosclerosis, brain dysfunction, stroke, cardiovascular diseases, and cancer. Cardiovascular diseases are the number one cause of death worldwide: more people die annually from cardiovascular diseases than from any other cause. The most important behavioural risk factors of heart disease and stroke are unhealthy diet, physical inactivity, tobacco use, and excess alcohol intake. The dietary consumption of polyphenols has shown to be inversely associated with morbidity and mortality by cardio- and cerebrovascular diseases...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29201555/background-and-distribution-of-lobar-microbleeds-in-cognitive-dysfunction
#9
Hirofumi Matsuyama, Yuichiro Ii, Masayuki Maeda, Maki Umino, Yukito Ueda, Ken-Ichi Tabei, Hirotaka Kida, Masayuki Satoh, Akihiro Shindo, Akira Taniguchi, Ryosuke Takahashi, Hidekazu Tomimoto
Objectives: Cerebral microbleeds (CMBs) are often observed in memory clinic patients. It has been generally accepted that deep CMBs (D-CMBs) result from hypertensive vasculopathy (HV), whereas strictly lobar CMBs (SL-CMBs) result from cerebral amyloid angiopathy (CAA) which frequently coexists with Alzheimer's disease (AD). Mixed CMBs (M-CMBs) have been partially attributed to HV and also partially attributed to CAA. The aim of this study was to elucidate the differences between SL-CMBs and M-CMBs in terms of clinical features and regional distribution...
November 2017: Brain and Behavior
https://www.readbyqxmd.com/read/29199410/non-alcoholic-fatty-liver-disease-the-emerging-burden-in-cardiometabolic-and-renal-diseases
#10
REVIEW
Eugene Han, Yong Ho Lee
As the number of individuals with non-alcoholic fatty liver disease (NAFLD) has increased, the influence of NAFLD on other metabolic diseases has been highlighted. Accumulating epidemiologic evidence indicates that NAFLD not only affects the liver but also increases the risk of extra-hepatic diseases such as type 2 diabetes mellitus, metabolic syndrome, dyslipidemia, hypertension, cardiovascular or cerebrovascular diseases, and chronic kidney disease. Non-alcoholic steatohepatitis, an advanced type of NAFLD, can aggravate these inter-organ relationships and lead to poorer outcomes...
November 17, 2017: Diabetes & Metabolism Journal
https://www.readbyqxmd.com/read/29187557/the-assessment-of-neurovascular-coupling-with-the-addenbrooke-s-cognitive-examination-a-functional-transcranial-doppler-ultrasonographic-study
#11
Lucy C Beishon, Claire A L Williams, Ronney B Panerai, Thompson G Robinson, Victoria Joanna Haunton
Cerebrovascular dysfunction occurs early in dementia and can be identified by Transcranial Doppler ultrasonography (TCD). Few studies have examined cerebral blood flow velocity (CBFv) responses to a detailed cognitive battery. This study aimed to characterise all CBFv responses, and the effect of hemispheric dominance, to the Addenbrooke's Cognitive Examination (ACE-III) in healthy volunteers. Forty volunteers underwent continuous bilateral TCD, beat-to-beat blood pressure (MAP) (Finapres), heart rate (HR) (electrocardiogram), and end-tidal CO2 (ETCO2) (capnography) monitoring...
November 29, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29171501/-nitric-oxide-from-the-mechanism-of-action-to-pharmacological-effects-in-cerebrovascular-diseases
#12
V V Fateeva, O V Vorobyova
The article presents the data of studies of nitric oxide (NO) in the pathogenesis of cerebrovascular diseases. It is emphasized that endothelial dysfunction contributes to the formation of cerebrovascular diseases. Generalized data on preparations with endothelioprotective effect, as well as own data on the use of the preparation 'Divaza' in patients of middle and advanced age with chronic cerebrovascular disease are given.
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/29163755/uncoupling-protein-2-a-key-player-and-a-potential-therapeutic-target-in-vascular-diseases
#13
REVIEW
Giorgia Pierelli, Rosita Stanzione, Maurizio Forte, Serena Migliarino, Marika Perelli, Massimo Volpe, Speranza Rubattu
Uncoupling protein 2 (UCP2) is an inner mitochondrial membrane protein that belongs to the uncoupling protein family and plays an important role in lowering mitochondrial membrane potential and dissipating metabolic energy with prevention of oxidative stress accumulation. In the present article, we will review the evidence that UCP2, as a consequence of its roles within the mitochondria, represents a critical player in the predisposition to vascular disease development in both animal models and in humans, particularly in relation to obesity, diabetes, and hypertension...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29160141/effects-of-mild-blast-traumatic-brain-injury-on-cerebral-vascular-histopathological-and-behavioral-outcomes-in-rats
#14
Uylissa A Rodriguez, Yaping Zeng, Donald James Deyo, Margaret O Parsley, Bridget E Hawkins, Donald S Prough, Douglas DeWitt
To determine the effects of mild blast-induced traumatic brain injury (bTBI), several groups of rats were subjected to blast injury or sham injury in a compressed air-driven shock tube. The effects of bTBI on relative cerebral perfusion (laser Doppler flowmetry, LDF), mean arterial blood pressure (MAP) cerebral vascular resistance were measured for two hrs post-bTBI. Dilator responses to reduced intravascular pressure were measured in isolated middle cerebral arterial (MCA) segments, ex vivo, 30 and 60 min post-bTBI...
November 21, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29154389/latent-autoimmune-diabetes-and-limbic-encephalitis-with-antibodies-against-glutamic-acid-decarboxylase
#15
Stoyan Popkirov, Seena Sebastian, Fatme Seval Ismail, Jörg Wellmer
Antibodies against glutamic acid decarboxylase (GAD) are a hallmark of type 1 diabetes and its late-onset variant, latent autoimmune diabetes of the adult (LADA).(1) While cerebrovascular disease and dementia are common causes of cognitive dysfunction and neurological deficits in diabetic patients,(2,3) rare autoimmune disorders of the central nervous system such as stiff-person syndrom or limbic encephalits can also occur on the basis of shared GAD autoimmunity.(4,5).
November 20, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/29141501/transient-hypertension-after-spinal-cord-injury-leads-to-cerebrovascular-endothelial-dysfunction-and-fibrosis
#16
Aaron A Phillips, Nusrat Matin, Mengyao Jia, Jordan W Squair, Aaron Monga, Mei Mu Zi Zheng, Rahul Sachdeva, Andrew Yung, Shea Hocolaski, Stacy L Elliott, Piotr Kozlowski, Anne Dorrance, Ismail Laher, Phil Ainslie, Andrei V Krassioukov
We aimed to create a clinically-relevant preclinical model of transient hypertension, and then evaluate the pathophysiological cerebrovascular processes resulting from this novel stimulus, which has recently been epidemiologically linked to cerebrovascular disease. We first developed a clinically-relevant model of transient hypertension, secondary to induced autonomic dysreflexia after spinal cord injury, and demonstrated that in both patients and rats this stimulus leads to drastic acute cerebral hyper-perfusion...
November 15, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29138020/moyamoya-syndrome-in-a-pediatric-patient-with-congenital-human-immunodeficiency-virus-type-1-infection-resulting-in-intracranial-hemorrhage
#17
Junko Yamanaka, Ikuma Nozaki, Mizue Tanaka, Hideko Uryuu, Noriko Sato, Takeji Matsushita, Hiroyuki Shichino
In the era of Antiretroviral Therapy (ART) in which human immunodeficiency virus type 1 (HIV-1) infection affected children can expect a better prognosis, the importance of careful follow up of pediatric HIV-1 cases for neurological complications has been growing. We present a case of hemorrhagic Moyamoya syndrome in a child with congenital HIV-1 infection. A 10-year-old girl was referred to our hospital for the treatment of Pneumocystis Jirovecii Pneumonia (PCP: Pneumocystis pneumonia). Her HIV-1 control was poor and Moyamoya syndrome was found during the opportunistic infection screening at admission...
November 11, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29135346/cerebral-artery-myogenic-reactivity-the-next-frontier-in-developing-effective-interventions-for-subarachnoid-hemorrhage
#18
Darcy Lidington, Jeffrey T Kroetsch, Steffen-Sebastian Bolz
Aneurysmal subarachnoid hemorrhage (SAH) is a devastating cerebral event that kills or debilitates the majority of those afflicted. The blood that spills into the subarachnoid space stimulates profound cerebral artery vasoconstriction and consequently, cerebral ischemia. Thus, once the initial bleeding in SAH is appropriately managed, the clinical focus shifts to maintaining/improving cerebral perfusion. However, current therapeutic interventions largely fail to improve clinical outcome, because they do not effectively restore normal cerebral artery function...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29121743/profiling-of-cardiovascular-and-cerebrovascular-disease-associated-microrna-expression-in-umbilical-cord-blood-in-gestational-hypertension-preeclampsia-and-fetal-growth-restriction
#19
Ilona Hromadnikova, Katerina Kotlabova, Katarina Ivankova, Yulia Vedmetskaya, Ladislav Krofta
BACKGROUND AND METHODS: Gene expression of 29 cardiovascular and cerebrovascular disease associated microRNAs was assessed in whole umbilical cord blood, compared between groups [47 gestational hypertension (GH), 56 preeclampsia (PE), 37 fetal growth restriction (FGR) and 44 normal pregnancies] and correlated with the severity of the disease with respect to clinical signs (mild PE vs. severe PE), delivery date (before and after 34weeks of gestation), and Doppler ultrasound parameters [pulsatility index (PI) in the umbilical artery, PI in the middle cerebral artery and the cerebroplacental ratio]...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29119386/endovascular-ischemic-stroke-models-in-nonhuman-primates
#20
Di Wu, Ankush Chandra, Jian Chen, Yuchuan Ding, Xunming Ji
To bridge the gap between rodent and human studies, the Stroke Therapy Academic Industry Roundtable committee suggests that nonhuman primates (NHPs) be used for preclinical, translational stroke studies. Owing to the fact that vast majority of ischemic strokes are caused by transient or permanent occlusion of a cerebral blood vessel eventually leading to brain infarction, ischemia induced by endovascular methods closely mimics thromboembolic or thrombotic cerebrovascular occlusion in patients. This review will make a thorough summary of transient or permanent occlusions of a cerebral blood vessel in NHPs using endovascular methods...
November 8, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
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