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Autonomic nervous system

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https://www.readbyqxmd.com/read/28812268/oxytocin-and-human-evolution
#1
C Sue Carter
A small, but powerful neuropeptide, oxytocin coordinates processes that are central to both human reproduction and human evolution. Also embedded in the evolution of the human nervous system are unique pathways necessary for modern human sociality and cognition. Oxytocin is necessary for facilitating the birth process, especially in light of anatomical restrictions imposed by upright human locomotion, which depends on a fixed pelvis. Oxytocin, by facilitating birth, allowed the development of a large cortex and a protective bony cranium...
August 16, 2017: Current Topics in Behavioral Neurosciences
https://www.readbyqxmd.com/read/28809834/quantifying-infra-slow-dynamics-of-spectral-power-and-heart-rate-in-sleeping-mice
#2
Laura M J Fernandez, Sandro Lecci, Romain Cardis, Gil Vantomme, Elidie Béard, Anita Lüthi
Three vigilance states dominate mammalian life: wakefulness, non-rapid eye movement (non-REM) sleep, and REM sleep. As more neural correlates of behavior are identified in freely moving animals, this three-fold subdivision becomes too simplistic. During wakefulness, ensembles of global and local cortical activities, together with peripheral parameters such as pupillary diameter and sympathovagal balance, define various degrees of arousal. It remains unclear the extent to which sleep also forms a continuum of brain states-within which the degree of resilience to sensory stimuli and arousability, and perhaps other sleep functions, vary gradually-and how peripheral physiological states co-vary...
August 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28807522/orthostatic-hypotension-a-practical-approach-to-investigation-and-management
#3
Amy C Arnold, Satish R Raj
The maintenance of blood pressure upon the assumption of upright posture depends on rapid cardiovascular adaptations driven primarily by the autonomic nervous system. Failure of these compensatory mechanisms can result in orthostatic hypotension (OH), defined as sustained reduction in systolic blood pressure > 20 mm Hg or diastolic blood pressure > 10 mm Hg within 3 minutes of standing or > 60° head-up tilt. OH is a common finding, particularly in elderly populations, associated with cardiovascular and cerebrovascular morbidity and mortality...
May 17, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28806623/retroperitoneal-paraganglioma-is-pre-operative-embolization-useful
#4
Natalia Apentchenko Eriutina, Camilo J Castellón Pavón, Carlos García Vásquez, Irene Gonzalo Montesinos, Santos Jiménez de Los Galanes, Pedro A Pacheco Martínez, Juan Gómez Patiño
INTRODUCTION: Paragangliomas (PG) are rare tumors derived from chromaffin cells that are located outside the adrenal gland and are capable of producing catecholamines. The treatment is based on a surgical resection, and there is controversy regarding the usefulness of previously carrying out an embolization and what is the most adequate surgical approach. CLINICAL CASE: We will present a 17-year-old woman with a retroperitoneal tumour in contact with the aorta and the inferior vena cava, treated with embolization prior to the surgical resection via laparotomy...
August 5, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28802920/neuropathology-of-nonmotor-symptoms-of-parkinson-s-disease
#5
Kurt A Jellinger
Parkinson's disease (PD), a multiorgan neurodegenerative disorder associated with α-synuclein deposits throughout the nervous system and many organs, is clinically characterized by motor and nonmotor features, many of the latter antedating motor dysfunctions by 20 or more years. The causes of the nonmotor manifestations such as olfactory, autonomic, sensory, neuropsychiatric, visuospatial, sleep, and other disorders are unlikely to be related to single lesions. They are mediated by the involvement of both dopaminergic and nondopaminergic systems, and diverse structures outside the nigrostriatal system that is mainly responsible for the motor features of PD...
2017: International Review of Neurobiology
https://www.readbyqxmd.com/read/28802636/cardiac-neuroanatomy-imaging-nerves-to-define-functional-control
#6
REVIEW
Peter Hanna, Pradeep S Rajendran, Olujimi A Ajijola, Marmar Vaseghi, J Andrew Armour, Jefrrey L Ardell, Kalyanam Shivkumar
The autonomic nervous system regulates normal cardiovascular function and plays a critical role in the pathophysiology of cardiovascular disease. Further understanding of the interplay between the autonomic nervous system and cardiovascular system holds promise for the development of neuroscience-based cardiovascular therapeutics. To this end, techniques to image myocardial innervation will help provide a basis for understanding the fundamental underpinnings of cardiac neural control. In this review, we detail the evolution of gross and microscopic anatomical studies for functional mapping of cardiac neuroanatomy...
July 29, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28802308/vitreous-amyloidosis-with-autonomic-neuropathy-of-the-digestive-tract-associated-with-a-novel-transthyretin-p-gly87arg-variant-in-a-bangladeshi-patient-a-case-report
#7
Benjamin Terrier, Magali Colombat, Caroline Beugnet, Astrid Quéant, Jonathan London, Jean-Baptiste Daudin, Claire Le Jeunne, Luc Mouthon, Dominique Monnet, Cécile Cauquil, Catherine Lacroix, David Adams, Antoine Brézin, Sophie Valleix
BACKGROUND: Hereditary transthyretin amyloidosis is an autosomal dominant inherited disorder, first described in families with sensorimotor and autonomic neuropathy. Since its first description, more than 120 amyloidogenic transthyretin mutations have been reported with various geographic distributions and associated with a wide range of phenotypes involving the peripheral nerve, the heart, the gastrointestinal tract, the eyes, the central nervous system, or the kidneys. In some cases of transthyretin amyloidosis, the first clinical manifestation is vitreous opacity...
August 13, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28800884/ionic-mechanisms-of-the-action-of-anaesthetics-on-sinoatrial-node-automaticity
#8
REVIEW
Akiko Kojima, Hiroshi Matsuura
Although various general anaesthetics affect the heart rate in clinical settings, their precise mechanisms remain to be fully elucidated. Because the heart rate is determined by automaticity of the cardiac pacemaker sinoatrial node and its regulation by autonomic nervous system, it is important to clarify the effect of anaesthetics on sinoatrial node automaticity. The spontaneous electrical activity of sinoatrial node is generated by a complex but coordinated interaction of multiple ionic currents, such as the hyperpolarisation-activated cation current (If), T-type and L-type Ca(2+) currents (ICa,T and ICa,L), Na(+)/Ca(2+) exchange current (INCX), and rapidly and slowly activating delayed rectifier K(+) currents (IKr and IKs)...
August 8, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28800081/autonomic-dysfunction-after-mild-traumatic-brain-injury
#9
Dmitry Esterov, Brian D Greenwald
A mild traumatic brain injury (mTBI) is a complex pathophysiologic process that has a systemic effect on the body aside from solely an impairment in cognitive function. Dysfunction of the autonomic nervous system (ANS) has been found to induce abnormalities in organ systems throughout the body, and may contribute to cardiovascular dysregulation and increased mortality. Autonomic dysfunction, also known as dysautonomia, has been studied in moderate and severe TBI, and has emerged as a major contributing factor in the symptomatology in mTBI as well...
August 11, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28799558/intermittent-mydriasis-associated-with-carotid-vascular-occlusion
#10
P D Chamberlain, A Sadaka, S Berry, A G Lee
PurposeTo describe two cases of stereotyped, intermittent, neurologically isolated, unilateral mydriasis in patients with a history of acquired internal carotid artery (ICA) occlusive disease on the ipsilateral side.PatientsTwo patients with intermittent mydriasis.MethodsCase Series.ResultsCase one: A 78-year-old man experienced 10 episodes of intermittent, unilateral, and painless mydriasis in the left eye and had 100% occlusion of the left ICA artery due to atherosclerotic disease. Case two: A 26-year-old woman with history of migraine developed new painless, intermittent episodes of unilateral mydriasis after sustaining chest trauma and was diagnosed with subsequent dissection and 65% occlusion of the ipsilateral ICA...
August 11, 2017: Eye
https://www.readbyqxmd.com/read/28799254/sex-specific-factors-regulating-pressure-and-flow
#11
Jill N Barnes
Over the last decade, there have been many published reports on sex differences in blood pressure regulation between young men and young women. The autonomic nervous system is a primary contributor to both acute and long-term blood pressure regulation. Sex differences in blood pressure regulation likely have effects that extend beyond mean arterial pressure, and which can affect blood flow and tissue function. This short review will include recent literature from our laboratory focusing on autonomic control of the circulation, specifically age and sex hormone related differences in central hemodynamics and cerebral blood flow, and discuss potential clinical implications...
August 11, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28798990/myocardial-123-i-metaiodobenzylguanidine-imaging-in-hypertension-and-left-ventricular-hypertrophy
#12
Riccardo Liga, Alessia Gimelli, Paolo Marzullo, Giuseppe Ambrosio, Matteo Cameli, Elisabetta Cerbai, Stefano Coiro, Michele Emdin, Rossella Marcucci, Doralisa Morrone, Alberto Palazzuoli, Anna Sonia Petronio, Ketty Savino, Luigi Padeletti, Roberto Pedrinelli
Sympathetic nervous system plays a pivotal role in essential hypertension and in the development of left ventricular hypertrophy. Moreover, cardiac sympathetic dys-regulation has been demonstrated as a key con-causal factor in the genesis and progression of pathologic conditions such as congestive heart failure and ischemic heart disease to which hypertension predisposes as a risk factor. However, despite its fundamental role in cardiac pathophysiology, the evaluation of cardiac sympathetic nervous system has never gained a wide clinical application, remaining mostly a research tool...
August 10, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28795616/the-effects-of-glial-cell-line-derived-neurotrophic-factor-after-spinal-cord-injury
#13
Konstantin Rosich, Bishoy Hanna, Rami K Ibrahim, Daniel Joseph Hellenbrand, Amgad Hanna
Spinal cord injury (SCI) is a devastating condition affecting 270,000 people in the United States. The use of growth factors is a potential treatment for reducing secondary damage, promoting axon growth and restoring some of the lost function after SCI. Glial cell line-derived neurotrophic factor (GDNF) is an important growth factor, because it can affect both neurons and support cells. Here, we give an in depth review of the previously published literature where GDNF was used to treat SCI. The effects of GDNF have been shown to decrease lesion size, improve allodynia, and regenerate axons in the central nervous system and peripheral nervous system...
August 10, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28792445/effects-of-short-forest-bathing-program-on-autonomic-nervous-system-activity-and-mood-states-in-middle-aged-and-elderly-individuals
#14
Chia-Pin Yu, Chia-Min Lin, Ming-Jer Tsai, Yu-Chieh Tsai, Chun-Yu Chen
The present study investigated changes in autonomic nervous system activity and emotions after a short (2 h) forest bathing program in the Xitou Nature Education Area (XNEA), Taiwan. One hundred and twenty-eight (60.0 ± 7.44 years) middle-aged and elderly participants were recruited. Physiological responses, pulse rate, systolic and diastolic blood pressure, heart rate variability (HRV), and psychological indices were measured before and after the program. We observed that pulse rate, systolic and diastolic blood pressure were significantly lower after the program, which indicated physiological benefits from stress recovery...
August 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28791857/antiarrhythmic-properties-of-atrial-pacing
#15
REVIEW
Magdalena Kliś, Agnieszka Sławuta, Jacek Gajek
Bradycardia, atrial stretch and dilatation, autonomic nervous system disorders, and the presence of triggers such as atrial premature contractions, are factors which predispose a person to paroxysmal AF. Atrial pacing not only eliminates bradycardia but also prevents atrial premature contractions and dispersion of refractoriness, which are a substrate for atrial fibrillation. As the prolonged duration of atrial activation during pacing, especially from locations changing the physiological pattern of this activation (right atrium lateral wall, right atrium appendage), negatively influences both a mechanical and an electrical function of the atria, the atrial pacing site affects an atrial arrhythmogenesis...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28791596/automated-respiratory-sinus-arrhythmia-measurement-demonstration-using-executive-function-assessment
#16
Meghan Hegarty-Craver, Kristin H Gilchrist, Cathi B Propper, Gregory F Lewis, Samuel J DeFilipp, Jennifer L Coffman, Michael T Willoughby
Respiratory sinus arrhythmia (RSA) is a quantitative metric that reflects autonomic nervous system regulation and provides a physiological marker of attentional engagement that supports cognitive and affective regulatory processes. RSA can be added to executive function (EF) assessments with minimal participant burden because of the commercial availability of lightweight, wearable electrocardiogram (ECG) sensors. However, the inclusion of RSA data in large data collection efforts has been hindered by the time-intensive processing of RSA...
August 8, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28782880/adaptive-changes-of-telocytes-in-the-urinary-bladder-of-patients-affected-by-neurogenic-detrusor-overactivity
#17
Chiara Traini, Maria-Simonetta Fausssone-Pellegrini, Daniele Guasti, Giulio Del Popolo, Jacopo Frizzi, Sergio Serni, Maria-Giuliana Vannucchi
Urinary bladder activity involves central and autonomic nervous systems and bladder wall. Studies on the pathogenesis of voiding disorders such as the neurogenic detrusor overactivity (NDO) due to suprasacral spinal cord lesions have emphasized the importance of an abnormal handling of the afferent signals from urothelium and lamina propria (LP). In the LP (and detrusor), three types of telocytes (TC) are present and form a 3D-network. TC are stromal cells able to form the scaffold that contains and organizes the connective components, to serve as guide for tissue (re)-modelling, to produce trophic and/or regulatory molecules, to share privileged contacts with the immune cells...
August 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28782142/influence-of-gestational-diabetes-on-the-fetal-autonomic-nervous-system-a-study-using-phase-rectified-signal-averaging-analysis
#18
Silvia M Lobmaier, Javier U Ortiz, Maria Sewald, Alexander Müller, Georg Schmidt, Bernhard Haller, Renate Oberhoffer, Karl T M Schneider, Dino A Giussani, Annette Wacker-Gußmann
OBJECTIVES: Maternal gestational diabetes (GDM) is known to influence fetal physiology. Phase-rectified signal averaging (PRSA), an innovative signal processing technique, can be used to investigate signals obtained from fetal heart. The PRSA calculated variables "average acceleration capacity" (AAC) and "average deceleration capacity" (ADC) are established indices of autonomic nervous system (ANS) function. The aim of this study was to evaluate the influence of gestational diabetes on the fetal ANS in human pregnancy using PRSA...
August 7, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28782130/left-atrial-phasic-function-and-heart-rate-variability-in-patients-with-systemic-sclerosis-a-new-part-of-the-old-puzzle
#19
Marijana Tadic, Maja Zlatanovic, Cesare Cuspidi, Ana Stevanovic, Vesna Kocijancic, Sinisa U Pavlovic, Nemanja Damjanov, Vera Celic
OBJECTIVE: We aimed to research left atrial (LA) phasic function and heart rate variability (HRV), as well as their relationship, in subjects with uncomplicated systemic sclerosis (SSc). METHODS: The investigation involved 44 SSc patients and 33 age-matched healthy controls. All participants underwent clinical examination, serological tests, 24-hours Holter monitoring, and echocardiographic examination including strain analysis. RESULTS: Maximum, minimum, and pre-A LA volumes and volume indices were higher in the SSc patients than in the controls...
August 7, 2017: Echocardiography
https://www.readbyqxmd.com/read/28782091/infant-parasympathetic-and-sympathetic-activity-during-baseline-stress-and-recovery-interactions-with-prenatal-adversity-predict-physical-aggression-in-toddlerhood
#20
J Suurland, K B van der Heijden, S C J Huijbregts, S H M van Goozen, H Swaab
Exposure to prenatal adversity is associated with aggression later in life. Individual differences in autonomic nervous system (ANS) functioning, specifically nonreciprocal activation of the parasympathetic (PNS) and sympathetic (SNS) nervous systems, increase susceptibility to aggression, especially in the context of adversity. Previous work examining interactions between early adversity and ANS functioning in infancy is scarce and has not examined interaction between PNS and SNS. This study examined whether the PNS and SNS moderate the relation between cumulative prenatal risk and early physical aggression in 124 children (57% male)...
August 7, 2017: Journal of Abnormal Child Psychology
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