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https://www.readbyqxmd.com/read/29142986/cardiac-autonomic-neuropathy-predicts-all-cause-and-cardiovascular-mortality-in-patients-with-end-stage-renal-failure-a%C3%A2-5-year-prospective-study
#1
Dimitrios Doulgerakis, Ioannis Moyssakis, Chris J Kapelios, Ioanna Eleftheriadou, Stamatia Chorepsima, Spyridon Michail, Nikolaos Tentolouris
Introduction: Chronic renal disease is associated with increased cardiovascular (CV) mortality. Cardiac autonomic neuropathy (CAN) is predictive of mortality for diseases that affect the autonomic nervous system. We prospectively evaluated the prognostic value of indexes of left ventricular (LV) function and CAN in all-cause and CV mortality of patients with end-stage renal failure (ESRF). Methods: A total of 133 patients with ESRF were recruited. LV function was evaluated by echocardiography, whereas cardiac autonomic function was assessed using the battery of the 4 standardized tests proposed by Ewing...
July 2017: KI Reports
https://www.readbyqxmd.com/read/29141871/potential-approaches-to-prevent-hypoglycemia-associated-autonomic-failure
#2
REVIEW
Eric Lontchi-Yimagou, Jee Young You, Michelle Carey, Ilan Gabriely, Harry Shamoon, Meredith Hawkins
Clear health benefits are associated with intensive glucose control in type 1 diabetes mellitus (T1DM). However, maintaining near-normal glycemia remains an elusive goal for many patients, in large part owing to the risk of severe hypoglycemia. In fact, recurrent episodes of hypoglycemia lead to 'hypoglycemia-associated autonomic failure' (HAAF), characterized by defective counter-regulatory responses to hypoglycemia. Extensive studies to understand the mechanisms underlying HAAF have revealed multiple potential etiologies, suggesting various approaches to prevent the development of HAAF...
November 14, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/29138216/autonomic-regulation-of-the-immune-system-in-cardiovascular-diseases
#3
François M Abboud, Madhu V Singh
The autonomic nervous system is a powerful regulator of circulatory adjustments to acute hemodynamic stresses. Here we focus on new concepts that emphasize the chronic influence of the sympathetic and parasympathetic systems on cardiovascular pathology. The autonomic neurohumoral system can dramatically influence morbidity and mortality from cardiovascular disease through newly discovered influences on the innate and adaptive immune systems. Specifically, the end-organ damage in heart failure or hypertension may be worsened or alleviated by pro- or anti-inflammatory pathways of the immune system, respectively, that are activated through neurohumoral transmitters...
December 1, 2017: Advances in Physiology Education
https://www.readbyqxmd.com/read/29136558/autonomous-vehicles-disengagements-trends-triggers-and-regulatory-limitations
#4
Francesca Favarò, Sky Eurich, Nazanin Nader
Autonomous Vehicle (AV) technology is quickly becoming a reality on US roads. Testing on public roads is currently undergoing, with many AV makers located and testing in Silicon Valley, California. The California Department of Motor Vehicles (CA DMV) currently mandates that any vehicle tested on California public roads be retrofitted to account for a back-up human driver, and that data related to disengagements of the AV technology be publicly available. Disengagements data is analyzed in this work, given the safety-critical role of AV disengagements, which require the control of the vehicle to be handed back to the human driver in a safe and timely manner...
November 11, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29114876/translating-carotid-body-function-into-clinical-medicine
#5
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/29111419/diagnosis-of-multiple-system-atrophy
#6
REVIEW
Jose-Alberto Palma, Lucy Norcliffe-Kaufmann, Horacio Kaufmann
Multiple system atrophy (MSA) may be difficult to distinguish clinically from other disorders, particularly in the early stages of the disease. An autonomic-only presentation can be indistinguishable from pure autonomic failure. Patients presenting with parkinsonism may be misdiagnosed as having Parkinson disease. Patients presenting with the cerebellar phenotype of MSA can mimic other adult-onset ataxias due to alcohol, chemotherapeutic agents, lead, lithium, and toluene, or vitamin E deficiency, as well as paraneoplastic, autoimmune, or genetic ataxias...
October 23, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29109181/achievements-of-an-eradication-program-against-caprine-arthritis-encephalitis-virus-in-south-tyrol-italy
#7
Alexander Tavella, Astrid Bettini, Marco Ceol, Paolo Zambotto, Ernst Stifter, Natashia Kusstatscher, Rosalba Lombardi, Stefano Nardeli, Maria Serena Beato, Katia Capello, Giuseppe Bertoni
Small ruminant lentivirus infections in goats affect both production and animal welfare. This represents a threat to the qualitative and quantitative growth of goat farming, recently observed in mountainous regions such as the Autonomous Province of Bolzano - South Tyrol (Italy). To monitor and eradicate the caprine arthritis encephalitis virus in this goat population, a compulsory eradication campaign was launched, based on a strict census of small ruminants and yearly serological testing of all animals, followed by the consequent culling of seropositive individuals...
November 6, 2017: Veterinary Record
https://www.readbyqxmd.com/read/29107022/error-blindness-and-motivational-significance-shifts-in-networks-centering-on-anterior-insula-co-vary-with-error-awareness-and-pupil-dilation
#8
Helga A Harsay, Michael X Cohen, Marcus Spaan, Wouter D Weeda, Sander Nieuwenhuis, K Richard Ridderinkhof
This investigation aims to further our understanding of the brain mechanisms underlying the awareness of one's erroneous actions. While all errors are registered as such in the rostral cingulate zone, errors enter awareness only when the anterior insula cortex is activated. Aware but not unaware errors elicit autonomic nervous system reactivity. Our aim is to investigate the hypothesis that activation in the insula during error awareness is related to autonomic arousal and to inter-regional interactions with other areas of the brain...
October 26, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29104019/symptomatic-therapy-of-multiple-system-atrophy
#9
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
https://www.readbyqxmd.com/read/29102451/autonomic-dysfunction-in-cardiology-pathophysiology-investigation-and-management
#10
REVIEW
Amy C Arnold, Jessica Ng, Lucy Lei, Satish R Raj
Presyncope and syncope are common medical findings, with a > 40% estimated lifetime prevalence. These conditions are often elicited by postural stress and can be recurrent and accompanied by debilitating symptoms of cerebral hypoperfusion. Therefore, it is critical for physicians to become familiar with the diagnosis and treatment of common underlying causes of presyncope and syncope. In some patients, altered postural hemodynamic responses result from a failure of compensatory autonomic nervous system reflex mechanisms...
September 14, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/29101501/severe-hypernatraemic-dehydration-and-unconsciousness-in-a-care-dependent-inpatient-treated-with-empagliflozin
#11
Georg Gelbenegger, Nina Buchtele, Christian Schoergenhofer, Martin Roeggla, Michael Schwameis
A 66-year-old Caucasian male became unconscious 2 weeks after initiation of add-on therapy with empagliflozin for poorly controlled type 2 diabetes mellitus. The inpatient had recently suffered focal pontine stroke, rendering him bedridden and requiring increased nursing care, including assistance with drinking. The patient had received empagliflozin 10 mg once daily for glycaemic control. Investigations revealed hypernatraemia (164 mmol/l), a urine glucose level of 3935 mg/dl, and a creatinine level of 2...
November 3, 2017: Drug Safety—Case Reports
https://www.readbyqxmd.com/read/29095897/a-novel-experimental-model-of-erectile-dysfunction-in-rats-with-heart-failure-using-volume-overload
#12
Fábio Henrique Silva, Frederico José Reis Veiga, Aline Gonçalves Mora, Rodrigo Sader Heck, Caroline Candida De Oliveira, Alessandra Gambero, Carla Fernanda Franco-Penteado, Edson Antunes, Jason D Gardner, Fernanda Bruschi Marinho Priviero, Mário Angelo Claudino
BACKGROUND: Patients with heart failure (HF) display erectile dysfunction (ED). However, the pathophysiology of ED during HF remains poorly investigated. OBJECTIVE: This study aimed to characterize the aortocaval fistula (ACF) rat model associated with HF as a novel experimental model of ED. We have undertaken molecular and functional studies to evaluate the alterations of the nitric oxide (NO) pathway, autonomic nervous system and oxidative stress in the penis...
2017: PloS One
https://www.readbyqxmd.com/read/29079703/thioredoxin-1-overexpression-in-the-ventromedial-nucleus-of-the-hypothalamus-vmh-preserves-the-counterregulatory-response-to-hypoglycemia-during-type-1-diabetes-mellitus-in-male-rats
#13
Chunxue Zhou, Vanessa H Routh
We previously showed that the glutathione precursor, N-acetylcysteine (NAC), prevented hypoglycemia-associated autonomic failure (HAAF) and impaired activation of ventromedial hypothalamus (VMH) glucose-inhibited (GI) neurons by low glucose after recurrent hypoglycemia (RH) in non-diabetic rats. However, NAC does not normalize glucose sensing by VMH GI neurons when RH occurs during diabetes. We hypothesized that recruiting the thioredoxin (Trx) antioxidant defense system would prevent HAAF and normalize glucose sensing after RH in diabetes...
October 27, 2017: Diabetes
https://www.readbyqxmd.com/read/29076058/pharmacotherapy-of-cardiovascular-autonomic-dysfunction-in-parkinson-disease
#14
REVIEW
Cyndya A Shibao, Horacio Kaufmann
Cardiovascular autonomic dysfunctions, including neurogenic orthostatic hypotension, supine hypertension and post-prandial hypotension, are relatively common in patients with Parkinson disease. Recent evidence suggests that early autonomic impairment such as cardiac autonomic denervation and even neurogenic orthostatic hypotension occur prior to the appearance of the typical motor deficits associated with the disease. When neurogenic orthostatic hypotension develops, patients with Parkinson disease have an increased risk of mortality, falls, and trauma-related to falls...
October 26, 2017: CNS Drugs
https://www.readbyqxmd.com/read/29071466/cardiovascular-autonomic-effects-of-vagus-nerve-stimulation
#15
REVIEW
Iñigo Garamendi-Ruiz, Juan Carlos Gómez-Esteban
The vagus nerve is responsible for the parasympathetic innervation of the major thoracic and abdominal organs. It also carries sensory afferent fibres from these viscera and reaches different brain structures. These connections have proven useful in the treatment of different diseases. Afferent stimulation of the left vagus nerve is used to treat epilepsy and major depression, and stimulation of the right vagus nerve is being tried for the treatment of heart failure. The device used for the therapy delivers intermittent stimuli...
October 25, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29065950/indices-of-heart-rate-variability-as-potential-early-markers-of-metabolic-stress-and-compromised-regulatory-capacity-in-dried-off-high-yielding-dairy-cows
#16
S Erdmann, E Mohr, M Derno, A Tuchscherer, C Schäff, S Börner, U Kautzsch, B Kuhla, H M Hammon, M Röntgen
High performing dairy cows experience distinct metabolic stress during periods of negative energy balance. Subclinical disorders of the cow's energy metabolism facilitate failure of adaptational responses resulting in health problems and reduced performance. The autonomic nervous system (ANS) with its sympathetic and parasympathetic branches plays a predominant role in adaption to inadequate energy and/or fuel availability and mediation of the stress response. Therefore, we hypothesize that indices of heart rate variability (HRV) that reflect ANS activity and sympatho-vagal balance could be early markers of metabolic stress, and possibly useful to predict cows with compromised regulatory capacity...
October 25, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29058089/evidence-based-treatment-of-neurogenic-orthostatic-hypotension-and-related-symptoms
#17
REVIEW
Sabine Eschlböck, Gregor Wenning, Alessandra Fanciulli
Neurogenic orthostatic hypotension, postprandial hypotension and exercise-induced hypotension are common features of cardiovascular autonomic failure. Despite the serious impact on patient's quality of life, evidence-based guidelines for non-pharmacological and pharmacological management are lacking at present. Here, we provide a systematic review of the literature on therapeutic options for neurogenic orthostatic hypotension and related symptoms with evidence-based recommendations according to the Grading of Recommendations Assessment, Development and Evaluation (GRADE)...
October 22, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29054751/ng2-cspg4-and-progranulin-in-the-posttraumatic-glial-scar
#18
REVIEW
Michael K E Schäfer, Irmgard Tegeder
Traumatic injury of the central nervous system is one of the leading causes of death and disability in young adults. Failure of regeneration is caused by autonomous neuronal obstacles and by formation of the glial scar, which is essential to seal the injury but also constitutes a barrier for regrowing axons. The scar center is highly inflammatory and populated by NG2+ glia, whereas astrocytes form the sealing border and trap regrowing axons, suggesting that the non-permissive environment of activated astrocytes and extracellular matrix components is one of the reasons for the regenerative failure...
October 17, 2017: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/29053742/are-current-chronic-fatigue-syndrome-criteria-diagnosing-different-disease-phenotypes
#19
Laura Maclachlan, Stuart Watson, Peter Gallagher, Andreas Finkelmeyer, Leonard A Jason, Madison Sunnquist, Julia L Newton
IMPORTANCE: Chronic fatigue syndrome (CFS) is characterised by a constellation of symptoms diagnosed with a number of different polythetic criteria. Heterogeneity across these diagnostic criteria is likely to be confounding research into the as-yet-unknown pathophysiology underlying this stigmatised and debilitating condition and may diagnose a disease spectrum with significant implications for clinical management. No studies to date have objectively investigated this possibility using a validated measure of CFS symptoms-the DePaul Symptom Questionnaire (DSQ)...
2017: PloS One
https://www.readbyqxmd.com/read/29052077/beat-to-beat-blood-pressure-and-heart-rate-responses-to-the-valsalva-maneuver
#20
REVIEW
David S Goldstein, William P Cheshire
Measurement of beat-to-beat blood pressure and heart rate responses to the Valsalva maneuver is the basis for a highly informative autonomic function test. Whereas in the past this measurement required intra-arterial cannulation, the development of finger cuff devices that acquire arterial pressure waveforms indistinguishable from those recorded intra-arterially has made it possible to obtain accurate measurements noninvasively. In a patient with orthostatic hypotension, the pattern of blood pressure responses during and after the release of the maneuver can identify a neurogenic basis: sympathetic neurocirculatory failure...
December 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
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