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Autonomic dysfunction

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https://www.readbyqxmd.com/read/29141501/transient-hypertension-after-spinal-cord-injury-leads-to-cerebrovascular-endothelial-dysfunction-and-fibrosis
#1
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/29140276/clinical-profile-associated-with-adverse-childhood-experiences-the-advent-of-nervous-system-dysregulation
#2
Jorina Elbers, Cynthia R Rovnaghi, Brenda Golianu, Kanwaljeet J S Anand
BACKGROUND: We report the prevalence of children with multiple medical symptoms in a pediatric neurology clinic, describe their symptom profiles, and explore their association with adverse childhood experiences (ACEs). METHODS: We retrospectively reviewed 100 consecutive patients from an outpatient pediatric neurology clinic. Patients were included if they were ≥5 years old and reported ≥4 symptoms that were unexplained for ≥3-months. Symptom profiles across six functional domains were recorded: (1) executive dysfunction, (2) sleep disturbances, (3) autonomic dysregulation, (4) somatization, (5) digestive symptoms, and (6) emotional dysregulation...
November 15, 2017: Children
https://www.readbyqxmd.com/read/29133708/demonstration-of-autonomic-dysfunction-in-traumatic-brachial-plexus-injury-using-quantitative-sudomotor-axon-reflex-test-preliminary-results
#3
Satyakam Baruah, Akhil Deepika, Dhaval Shukla, Bhagavatula Indira Devi, Veeramani Preethish-Kumar, Talakad N Sathyaprabha
OBJECTIVE: To objectively document autonomic dysfunction in the affected arm with traumatic brachial plexus injury (TBPI) using quantitative sudomotor axon reflex test (QSART). MATERIALS AND METHODS: Patients with TBPI presenting to the neurosurgical outpatient department from August 2013 to November 2014 were included in the study. The QSART was administered to each patient with prior informed consent detailing the procedure. A total of 20 patients with TBPI were included in the study...
November 2017: Neurology India
https://www.readbyqxmd.com/read/29133688/assessment-of-autonomic-dysfunction-in-traumatic-brachial-plexus-injury-a-regional-pain-management-strategy-or-merely-a-research-tool
#4
Manish Singh Sharma
No abstract text is available yet for this article.
November 2017: Neurology India
https://www.readbyqxmd.com/read/29133687/demonstration-of-autonomic-dysfunction-in-traumatic-brachial-plexus-injury-using-quantitative-sudomotor-axon-reflex-test
#5
Vanessa Sammons, Rajiv Midha
No abstract text is available yet for this article.
November 2017: Neurology India
https://www.readbyqxmd.com/read/29133412/cell-autonomous-adiposity-through-increased-cell-surface-glut4-due-to-ankyrin-b-deficiency
#6
Damaris N Lorenzo, Vann Bennett
Obesity typically is linked to caloric imbalance as a result of overnutrition. Here we propose a cell-autonomous mechanism for adiposity as a result of persistent cell surface glucose transporter type 4 (GLUT4) in adipocytes resulting from impaired function of ankyrin-B (AnkB) in coupling GLUT4 to clathrin-mediated endocytosis. Adipose tissue-specific AnkB-KO mice develop obesity and progressive pancreatic islet dysfunction with age or high-fat diet (HFD). AnkB-deficient adipocytes exhibit increased lipid accumulation associated with increased glucose uptake and impaired endocytosis of GLUT4...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29131019/utility-of-autonomic-function-tests-to-differentiate-dementia-with-lewy-bodies-and-parkinson-disease-with-dementia-from-alzheimer-disease
#7
Shuta Toru, Tadashi Kanouchi, Takanori Yokota, Yosuke Yagi, Akira Machida, Takayoshi Kobayashi
OBJECTIVE: We studied autonomic disturbance in patients with dementia with Lewy bodies (DLB), Parkinson disease with dementia (PDD), Alzheimer disease (AD), to determine whether autonomic function tests can be used to distinguish these disorders. METHODS: Autonomic function was tested in 56 patients with DLB, 37 patients with PDD, and 59 patients with AD by using the sympathetic skin response, coefficient of variation in R-R interval, the head-up tilt test, serum norepinephrine concentration, and 123I-meta-iodobenzylguanidine cardiac scintigraphy...
November 13, 2017: European Neurology
https://www.readbyqxmd.com/read/29128905/down-syndrome-ipsc-derived-astrocytes-impair-neuronal-synaptogenesis-and-the-mtor-pathway-in-vitro
#8
Bruno H S Araujo, Carolini Kaid, Janaina S De Souza, Sérgio Gomes da Silva, Ernesto Goulart, Luiz C J Caires, Camila M Musso, Laila B Torres, Adriano Ferrasa, Roberto Herai, Mayana Zatz, Oswaldo K Okamoto, Esper A Cavalheiro
Several methods have been used to study the neuropathogenesis of Down syndrome (DS), such as mouse aneuploidies, post mortem human brains, and in vitro cell culture of neural progenitor cells. More recently, induced pluripotent stem cell (iPSC) technology has offered new approaches in investigation, providing a valuable tool for studying specific cell types affected by DS, especially neurons and astrocytes. Here, we investigated the role of astrocytes in DS developmental disease and the impact of the astrocyte secretome in neuron mTOR signaling and synapse formation using iPSC derived from DS and wild-type (WT) subjects...
November 11, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/29124537/pathogenetic-mechanisms-of-outbreak-and-development-of-cardiac-autonomic-neuropathy-in-patients-with-metabolic-syndrome
#9
S I Kseneva, E V Borodulina, O Yu Trifonova, M S Timofeev, V V Udut
A cross-sectional study of universe sample of patients (N=135; mean age -49.7±0.8 years) with metabolic syndrome yielded the incidence of cardiac autonomic neuropathy of 37.5%. The pathogenetic peculiarities were revealed for the onset and development of this neuropathy. At the early stages, the progress of cardiac autonomic neuropathy closely correlated with elevation of blood glucose, while endothelial dysfunction progressing at the later period against the background of persistent hyperglycemia is viewed as an extra factor contributing to the development of this disease...
November 10, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29120410/molecular-analysis-of-axonal-intrinsic-and-glial-associated-co-regulation-of-axon-degeneration
#10
Alejandra Catenaccio, Maica Llavero Hurtado, Paula Diaz, Douglas J Lamont, Thomas M Wishart, Felipe A Court
Wallerian degeneration is an active program tightly associated with axonal degeneration, required for axonal regeneration and functional recovery after nerve damage. Here we provide a functional molecular foundation for our undertstanding of the complex non-cell autonomous role of glial cells in the regulation of axonal degeneration. To shed light on the complexity of the molecular machinery governing axonal degeneration we employ a multi-model, unbiased, in vivo approach combining morphological assesment and quantitative proteomics with in silico-based higher order functional clustering to genetically uncouple the intrinsic and extrinsic processes governing Wallerian degeneration...
November 9, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/29117509/heart-rate-variability-mediates-the-link-between-rumination-and-depressive-symptoms-a-longitudinal-study
#11
Luca Carnevali, Julian F Thayer, Jos F Brosschot, Cristina Ottaviani
Ruminative thinking about negative feelings has been prospectively associated with increases in depressive symptoms and heightened risk for new onsets of major depression. One putative pathophysiological mechanism underlying this link might be represented by autonomic nervous system dysfunction. The objective of this longitudinal study was to evaluate the interplay between rumination, autonomic function (as revealed by heart rate variability (HRV) analysis), and depressive symptoms in healthy young subjects, over a three-year period...
November 5, 2017: International Journal of Psychophysiology
https://www.readbyqxmd.com/read/29114876/translating-carotid-body-function-into-clinical-medicine
#12
Rodrigo Iturriaga
The carotid body (CB) is considered the main O2 chemoreceptor, which contributes to the cardiorespiratory homeostasis and ventilatory acclimatization. In clinical medicine, the most common pathology associated with the CB are tumours. However, a growing body of evidences supports the novel idea that an enhanced CB chemosensory discharge contributes to the autonomic dysfunction and pathological consequences in obstructive sleep apnoea (OSA), hypertension, systolic heart failure (HF) and cardiometabolic diseases...
November 8, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29114536/short-term-combined-exercise-training-improves-cardiorespiratory-fitness-and-autonomic-modulation-in-cancer-patients-receiving-adjuvant-therapy
#13
Cristiano Mostarda, Jurema Castro-Filha, Andréa Dias Reis, Mário Sevílio, Carlos José Dias, Antonio Carlos Silva-Filho, João Batista Silva Garcia, Maria do Desterro Nascimento, Hélio José Coelho-Junior, Bruno Rodrigues
The present study aimed to investigate the impact of a short-term exercise training (ET) on the cardiorespiratory fitness and autonomic modulation of women with breast cancer who were receiving adjuvant radiotherapy, chemotherapy or hormonotherapy. Eighteen women previously diagnosed with breast cancer receiving adjuvant radiotherapy, chemotherapy or hormone therapy were randomly allocated into breast cancer nonexercise (BC) and exercise groups (BC+Ex). Moreover, nine healthy physically inactive volunteers were recruited to compose the noncancer control group (CG)...
October 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29114197/low-levels-of-vitamin-d-an-emerging-risk-for-cardiovascular-diseases-a-review
#14
REVIEW
Farrukh Majeed
Sunlight is regarded among greatest gifts that are presented in abundance to the human beings from the God. Sunlight is also a rich source of Vitamin D (Vit D) that prevents us from numerous ailments such as autoimmune disorders, various types of cancer, and the above all cardiovascular diseases (CVD). Evident from recent research that Vit D deficiency may be the cause for hypertension, cardiac autonomic imbalance, vascular endothelial dysfunction, metabolic syndrome, and even diabetes. Concurrently, many studies present research outcomes that are contradictory to earlier results and also raised a concern not for general public but also among their treating physicians...
November 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/29111021/differences-in-clinical-characteristics-when-rem-sleep-behavior-disorder-precedes-or-comes-after-the-onset-of-parkinson-s-disease
#15
Takashi Nomura, Masafumi Kishi, Kenji Nakashima
OBJECTIVE: Rapid eye movement (REM) sleep behavior disorder (RBD) is important not only as a preclinical symptom of Parkinson's disease (PD), but also as an aggravating symptom of PD. However, it is not known whether the onset of RBD in relation to PD affects the clinical characteristics of PD. A cross-sectional study comparing clinical characteristics of PD between patients with RBD occurring before and after the onset of PD was conducted. METHODS: Interviews regarding RBD symptoms were conducted and polysomnography was performed on 136 patients with PD...
November 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29110883/linear-and-nonlinear-parameters-of-heart-rate-variability-in-ischemic-stroke-patients
#16
V Constantinescu, D Matei, V Costache, D Cuciureanu, C Arsenescu-Georgescu
INTRODUCTION: Cardiovascular system presents cortical modulation. Post-stroke outcome can be highly influenced by autonomic nervous system disruption. Heart rate variability (HRV) analysis is a simple non-invasive method to assess sympatho-vagal balance. OBJECTIVES: The purpose of this study was to investigate cardiac autonomic activity in ischemic stroke patients and to asses HRV nonlinear parameters beside linear ones. METHODS: We analyzed HRV parameters in 15 right and 15 left middle cerebral artery ischemic stroke patients, in rest condition and during challenge (standing and deep breathing)...
October 11, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29109881/hypothermia-with-extreme-bradycardia-following-spinal-cord-infarction-of-septic-origin
#17
Philippe Hantson, Thierry Duprez
Among other autonomic dysfunctions complicating acute spinal cord injury, deep hypothermia is rare but may induce serious cardiovascular complications. There are few pharmacological options to influence hypothermia. A 66-year-old woman was transferred to the intensive care unit (ICU) for serious cardiac arrhythmias (atrial fibrillation and asystole) in the context of a deep hypothermia (axillary temperature below 32°C). She had been admitted to the hospital two months before for an acute L4-L5 infectious spondylodiscitis without any initial neurological deficit...
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/29107952/hereditary-angioedema-assessing-the-hypothesis-for-underlying-autonomic-dysfunction
#18
Maddalena A Wu, Francesco Casella, Francesca Perego, Chiara Suffritti, Nada Afifi Afifi, Eleonora Tobaldini, Andrea Zanichelli, Chiara Cogliati, Nicola Montano, Marco Cicardi
BACKGROUND: Attacks of Hereditary Angioedema due to C1-inhibitor deficiency (C1-INH-HAE)are often triggered by stressful events/hormonal changes. OBJECTIVE: Our study evaluates the relationship between autonomic nervous system (ANS) and contact/complement system activation. METHODS: Twenty-three HAE patients (6 males, mean age 47.5±11.4 years) during remission and 24 healthy controls (8 males, mean age 45.3±10.6 years) were studied. ECG, beat-by-beat blood pressure, respiratory activity were continuously recorded during rest (10') and 75-degrees-head-up tilt (10')...
2017: PloS One
https://www.readbyqxmd.com/read/29107740/autonomic-function-testing-compliance-and-consequences
#19
Thorsten Kamlarczyk Rasmussen, John Hansen, Phillip A Low, Paola Sandroni, Wolfgang Singer, Troels Staehelin Jensen, Astrid Juhl Terkelsen
BACKGROUND: The deep breathing test (DB) and Valsalva maneuver (VM) are used to detect autonomic dysfunction. The VM induces sympathetically mediated changes in blood pressure (phase II late, phase IV, and recovery time) and both tests induce vagally mediated heart rate changes. There is limited information on effects of key variables, compliance with testing and the effects of non-compliance This study has twin goals of evaluating compliance with standard instructions and the effects of changes in key variables...
October 18, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29104019/symptomatic-therapy-of-multiple-system-atrophy
#20
REVIEW
Guido Rohrer, Günter U Höglinger, Johannes Levin
Multiple system atrophy is a progressive neurodegenerative disease characterized by the association of autonomic failure and a movement disorder that consist of either a hypokinetic movement disorder or a cerebellar syndrome or both. In addition to these core characteristics other movement disorders (e.g. dystonia, myoclonus, spasticity), and neuropsychiatric symptoms (e.g. depression, cognitive dysfunction) may occur in the course of the disease and can severely impair patients' quality of live. To date no causal therapy is available and therefore symptomatic treatment plays a pivotal role in patient care...
October 27, 2017: Autonomic Neuroscience: Basic & Clinical
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