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cerebrovascular reserve

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https://www.readbyqxmd.com/read/28808603/aneurysm-treatment-practice-patterns-for-newly-appointed-dual-trained-cerebrovascular-endovascular-neurosurgeons-comparison-of-open-surgical-to-neuroendovascular-procedures-in-the-first-2-years-of-academic-practice
#1
Bowen Jiang, Matthew T Bender, Bima Hasjim, Frank P K Hsu, Rafael J Tamargo, Judy Huang, Geoffrey P Colby, Alexander L Coon, Li-Mei Lin
BACKGROUND: The practice patterns of a hybrid open cerebrovascular/neuroendovascular (CVNV) neurosurgeon in early academic practice is unknown. METHODS: We performed a multi-institutional retrospective cohort study of patients with cerebral aneurysms that were treated within the first 24 months of the neurosurgeon's practice. RESULTS: A total of 533 aneurysms were treated by the three senior authors within the first 24 months of their academic practice...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28798906/cerebral-sinovenous-thrombosis
#2
REVIEW
Rebecca Ichord
Cerebral sinovenous thrombosis (CSVT) is a rare but serious cerebrovascular disorder affecting children from the newborn period through childhood and adolescence. The incidence is estimated at 0.6/100,000/year, with 30-50% occurring in newborns. Causes are diverse and are highly age dependent. Acute systemic illness is the dominant risk factor among newborns. In childhood CSVT, acute infections of the head and neck such as mastoiditis are most common, followed by chronic underlying diseases such as nephrotic syndrome, cancer, and inflammatory bowel disease...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28796925/neurological-comorbidity-in-children-with-neurofibromatosis-type-1
#3
Keiko Hirabaru, Muneaki Matsuo
OBJECTIVE: To determine the frequency of central nervous system comorbidities in children with neurofibromatosis type 1 (NF1). METHODS: We performed a nationwide survey to investigate neurological comorbidities in 3-15-year-old children with NF1 in Japan by sending questionnaires to pediatricians and pediatric neurologists. A secondary questionnaire was sent to the parents of identified NF1 patients to assess neurological comorbidities including headache, attention deficit hyperactivity disorder (ADHD)-Rating Scale (RS), and the Social Responsiveness Scale -2...
August 10, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28767806/extracranial-carotid-stenosis-evidence-based-review
#4
Carolina Dutra Queiroz Flumignan, Ronald Luiz Gomes Flumignan, Túlio Pinho Navarro
Extracranial cerebrovascular disease is one of the most important causes of death and disability worldwide and its treatment is based on clinical and surgical strategies, the latter being performed by conventional or endovascular techniques. The management of stenosis of the carotid bifurcation is mainly aimed at preventing stroke and has been the subject of extensive investigation. The role of clinical treatment has been re-emphasized, but carotid endarterectomy remains the first-line treatment for symptomatic patients with 50% to 99% stenosis and for asymptomatic patients with 60% to 99% stenosis...
May 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/28762565/influence-of-lung-volume-on-the-interaction-between-cardiac-output-and-cerebrovascular-regulation-during-extreme-apnoea
#5
Mike Stembridge, Ryan L Hoiland, Anthony R Bain, Otto F Barak, Ivan Drvis, David B MacLeod, Douglas M MacLeod, Dennis Madden, Tonci Batinic, Peter O'Donoghue, Rob Shave, Zeljko Dujic, Philip N Ainslie
We investigated the role of lung volume-induced changes in cardiac output (Q̇) on cerebrovascular regulation during prolonged apnoea. Fifteen elite apnoea divers (1F; 185 ± 7 cm, 82 ± 12 kg, 29 ± 7 years) attended the laboratory on two separate occasions and completed maximal breath-holds at total lung capacity (TLC) and functional residual capacity (FRC) to elicit disparate cardiovascular responses. Mean arterial pressure (MAP), internal jugular venous pressure (IJVP) and arterial blood gases were measured via cannulation, global cerebral blood flow (gCBF) was quantified by ultrasound and cardiac output via photoplethysmography...
August 1, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28737253/circulating-leukocytes-perpetuate-stroke-induced-aortic-dysfunction
#6
Shinichi Asano, Grant C O'Connell, Kent C Lemaster, Evan R DeVallance, Kayla W Branyan, James W Simpkins, Jefferson C Frisbee, Taura L Barr, Paul D Chantler
Post-stroke inflammation has been linked to poor stroke outcomes. The vascular endothelium senses and responds to circulating factors, in particular inflammatory cytokines. Although stroke associated local cerebrovascular dysfunction is well reported, the effects of a stroke on conduit artery function are not fully understood. We tested the hypothesis that stroke patients' serum triggers leukocyte-dependent aortic endothelial dysfunction that is associated with elevated cytokines levels. Total leukocytes were isolated from healthy individuals and cells were incubated in control and stroke patients' serum for 6 h...
July 24, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28734077/integrative-studies-implicate-matrix-metalloproteinase-12-as-a-culprit-gene-for-large-artery-atherosclerotic-stroke
#7
Hovsep Mahdessian, Ljubica Perisic Matic, Mariette Lengquist, Karl Gertow, Bengt Sennblad, Damiano Baldassarre, Fabrizio Veglia, Steve E Humphries, Rainer Rauramaa, Ulf de Faire, Andries J Smit, Philippe Giral, Sudhir Kurl, Elmo Mannarino, Elena Tremoli, Anders Hamsten, Per Eriksson, Ulf Hedin, Anders Mälarstig
BACKGROUND: Ischemic stroke and coronary heart disease are important contributors to the global disease burden and share atherosclerosis as the main underlying cause. Recent evidence from a genome-wide association study (GWAS) suggested that single nucleotide polymorphisms (SNP) near the MMP12 gene at chromosome 11q22.3 were associated with large-vessel ischemic stroke. Here we evaluated and extended these results by examining the relationship between MMP12 and atherosclerosis in clinical and experimental studies...
July 22, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28729429/brain-perfusion-imaging-under-acetazolamide-challenge-for-detection-of-impaired-cerebrovascular-reserve-capacity-positive-findings-with-o-15-water-pet-in-patients-with-negative-tc-99m-hmpao-spect
#8
Güliz Acker, Catharina Lange, Imke Schatka, Andreas Pfeifer, Marcus A Czabanka, Peter Vajkoczy, Ralph Buchert
Cerebrovascular reserve capacity (CVRC) is an important parameter for treatment decisions in chronic cerebrovascular diseases. It can be assessed by measuring the acetazolamide-induced change of regional cerebral blood flow using single photon emission computed tomography (SPECT) with Tc-99m-labeled hexamethylpropyleneamine oxime (HMPAO) or positron emission tomography (PET) with O-15-water. Methods: Our database was searched for patients with moyamoya vasculopathy (MMV) or atherosclerotic cerebrovascular disease who had underwent O-15-water PET after normal Tc-99m-HMPAO SPECT with respect to CVRC...
July 20, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28724339/influence-of-cerebrovascular-reactivity-on-outcome-of-the-patients-with-%C3%A2-50-symptomatic-unilateral-middle-cerebral-artery-stenosis
#9
Weiqing Zhang, Yanwei Yin, Yingqian Zhang, Fen Yang, Wenqian Shi, Dawei Chen, Chen Song, Huiping Shi, Xuanzhu Zhao, Jin Shi
Cerebrovascular reactivity (CVR) reflects the vasodilatory reserve of cerebral resistance vessels, which is an important marker for assessing cerebrovascular disease. The present study is to investigate whether CVR impairment increases adverse long-term outcome risk of patients with ≥ 50% symptomatic unilateral middle cerebral artery (MCA) stenosis (ischemic stroke (IS) or transient ischemic attack (TIA)). Digital subtraction angiography (DSA) was used to assess the degree of stenosis, and perfusion CT and 5% CO2 inhalation were adopted to evaluate CVR...
July 20, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28716984/the-risk-of-ischemic-events-increased-in-patients-with-asymptomatic-carotid-stenosis-with-decreased-cerebrovascular-reserve
#10
Shulan Liu, Jing Cai, Fugui Ge, Wei Yue
Identifying high-risk patients with asymptomatic carotid stenosis (ACS) is necessary regardless of whether intensive medical therapy or aggressive treatment is applied. In order to assess the relationship between cerebrovascular reserve (CVR) measured by perfusion CT with inhalation of CO2 and the risk of ischemic events in ACS, this long-term follow-up study was conducted. Forty-five patients with ACS who underwent the examination of CVR measured by perfusion CT with inhalation of CO2 were collected and followed-up for at least 5 years...
July 17, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28712815/asymptomatic-carotid-stenosis-is-associated-with-cognitive%C3%A2-impairment
#11
Brajesh K Lal, Moira C Dux, Siddhartha Sikdar, Carly Goldstein, Amir A Khan, John Yokemick, Limin Zhao
BACKGROUND: Cerebrovascular risk factors (eg, hypertension, coronary artery disease) and stroke can lead to vascular cognitive impairment. The Asymptomatic Carotid Stenosis and Cognitive Function study evaluated the isolated impact of asymptomatic carotid stenosis (no prior ipsilateral or contralateral stroke or transient ischemic attack) on cognitive function. Cerebrovascular hemodynamic and carotid plaque characteristics were analyzed to elucidate potential mechanisms affecting cognition...
July 13, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28681964/a-shared-comparison-of-diabetes-mellitus-and-neurodegenerative-disorders
#12
Mahmoud Morsi, Ahmed Maher, Ahmed Metwally, Omnia Abo-Elmagd, Dina Johar, Larry Bernstein
Diabetes Mellitus (DM) is one of the most common diseases in the world population, associated with obesity, pancreatic endocrine changes, cardiovascular disease, renal glomerular disease, cerebrovascular disease, peripheral neuropathy, neurodegenerative disease, retinal disease, sleep apnea, some of which are bundled into the metabolic syndrome. The main characteristic of this disease is hyperglycemia, and often with albuminuria. Nevertheless, the classic features, with ketoacidosis in the extreme, are only a first layer of description of this condition...
July 6, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28677172/neurological-and-psychiatric-associations-in-bullous-pemphigoid-more-than-skin-deep
#13
REVIEW
Anna-Kaisa Försti, Laura Huilaja, Enno Schmidt, Kaisa Tasanen
In elderly patients, bullous pemphigoid (BP) is associated with several comorbidities; the strongest association occurs between BP and neurological diseases. Different types of dementia, Parkinson's disease, cerebrovascular disorders and epilepsy all have a significant association with BP but patients with multiple sclerosis have the highest risk of BP. An existing neurological disorder appears to increase the risk for subsequent BP, but an increased risk for developing some neurological diseases has also been reported following BP diagnosis...
July 4, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28677160/risk-factors-for-the-incidence-of-delirium-in-cerebrovascular-patients-in-a-neurosurgery-intensive-care-unit-icu-a-prospective-study
#14
Jun Wang, Yuanyuan Ji, Ning Wang, Wenjin Chen, Yuehong Bao, Qinpu Qin, Qian Xiao, Shulan Li
AIMS AND OBJECTIVES: To explore the incidence of delirium in cerebrovascular patients admitted in our Neurosurgery Intensive Care Unit (NICU) and analyze the risk factors leading to delirium. BACKGROUND: Delirium is one of the most common mental disorders in general hospitals, but the incidence of different kinds of diseases and studies varies. Cerebrovascular patients in our NICU are high-risk groups for delirium; identifying risk factors for delirium and taking early interventions are crucial for patient prognosis...
July 5, 2017: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/28646892/effect-of-acupuncture-on-cerebrovascular-reserve-in-patients-with-acute-cerebral-infarction-protocol-for-a-randomized-controlled-pilot-study
#15
Shaosong Wang, Tingting Ma, Linpeng Wang, Lu Liu, Huilin Liu, Bin Li, Yuanbo Fu
BACKGROUND: The incidence of cerebral infarction has been growing year by year in China and around the world. According to clinical observation, acupuncture utilizing the "waking up the spirit" needling method is widely used in patients with cerebral infarction, though the underlying mechanisms remain unclear. Additionally, a number of studies have begun to focus on the relationship between cerebrovascular reserve (CVR) and cerebral infarction. The present study aims to investigate whether CVR is one of potential mechanisms underpinning this effect of acupuncture on patients with cerebral infarction...
June 24, 2017: Trials
https://www.readbyqxmd.com/read/28646507/influences-of-placental-growth-factor-on-mouse-retinal-vascular-development
#16
Vanessa R Kay, Chandrakant Tayade, Peter Carmeliet, B Anne Croy
BACKGROUND: Placental growth factor (PGF) is important for wound-healing and vascular collaterogenesis. PGF deficiency is associated with preeclampsia, a hypertensive disease of human pregnancy. Offspring born to preeclamptic mothers display cognitive impairments and brain vascular and neurostructural deviations. Low PGF production during development may contribute to alterations in offspring cerebrovascular beds. Retina is a readily accessible part of the central nervous system with a well-described pattern of vascular development in mice...
June 24, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28643877/cerebral-haemodynamic-response-to-somatosensory-stimulation-in-neonatal-lambs
#17
Shinji Nakamura, David W Walker, Flora Y Wong
KEY POINTS: Cerebral haemodynamic response to neural stimulation has been extensively studied in adults, but little is known about cerebral haemodynamic response in the fetal and neonatal brain. The present study describes the cerebral haemodynamic response measured by near infrared spectroscopy to somatosensory stimulation in newborn lambs, in comparison to recent findings in fetal sheep. The cerebral haemodynamic responses in the newborn lamb brain can involve an increase in oxyhaemoglobin (oxyHb), or a decrease of oxyHb suggestive of reduced perfusion and oxygenation...
June 23, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28597991/lack-of-linear-correlation-between-dynamic-and-steady-state-cerebral-autoregulation
#18
Daan L K de Jong, Takashi Tarumi, Jie Liu, Rong Zhang, Jurgen A H R Claassen
KEY POINTS: For correct application and interpretation of cerebral autoregulation (CA) measurements in research and in clinical care, it is essential to understand differences and similarities between dynamic and steady-state CA. The present study found no correlation between dynamic and steady-state CA indices in healthy older adults. There was variability between individuals in all (steady-state and dynamic) autoregulatory indices, ranging from low (almost absent) to highly efficient CA in this healthy population...
June 9, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28544528/micellar-electrokinetic-capillary-chromatography-fingerprints-combined-with-multivariate-statistical-analyses-to-evaluate-the-quality-consistency-and-predict-the-fingerprint-efficacy-relationship-of-salviae-miltiorrhizae-radix-et-rhizoma-danshen
#19
Yujing Zhang, Lanping Yang, Jing Zhang, Min Shi, Guoxiang Sun
Micellar electrokinetic capillary chromatography fingerprinting combined with quantification was successfully established and applied to evaluate the quality consistency of Danshen, which is a medicinal herb used to treat various diseases, especially coronary cerebrovascular diseases. A background electrolyte composed of 20 mmol/L sodium tetraborate, 90 mmol/L orthoboric acid, 25 mmol/L sodium phosphate monobasic dehydrate, and 65 mmol/L sodium dodecyl sulfate was used to separate compounds. To optimize micellar electrokinetic capillary chromatography conditions, a response surface strategy was set up for orthogonal experimental design...
July 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28543703/self-rated-physical-fitness-and-estimated-maximal-oxygen-uptake-in-relation-to-all-cause-and-cause-specific-mortality
#20
Alina Solomon, Katja Borodulin, Tiia Ngandu, Miia Kivipelto, Tiina Laatikainen, Jenni Kulmala
This study investigated the longitudinal associations of self-rated physical fitness and estimated maximal oxygen uptake (VO2max) with all-cause and cause-specific mortality. A total of 59 741 participants in the Finnish National FINRISK Study Cohort had data on self-rated physical fitness and covariates. A subsample of 4 823 participants had estimated VO2max data. Follow-up ranged from 3 to 38 years. Associations of self-rated physical fitness and VO2max with mortality were analysed using multivariate Cox proportional hazard models...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
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