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https://www.readbyqxmd.com/read/29737432/assessment-of-sudomotor-function
#1
REVIEW
Sylvia J Buchmann, Ana Isabel Penzlin, Marie Luise Kubasch, Ben Min-Woo Illigens, Timo Siepmann
PURPOSE: To review the currently available literature on clinical autonomic tests of sudomotor function. METHODS: We searched PubMED/MEDLINE for articles on technical principles and clinical applications of sudomotor tests with a focus on their drawbacks and perspectives in order to provide a narrative review. RESULTS: The quantitative sudomotor axon reflex sweat test (QSART) is the most widely used test of sudomotor function. The technique captures pathology with low intra- and inter-subject variability but is limited by technical demands...
May 8, 2018: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29702257/verbal-instruction-can-induce-extinction-of-fear-of-movement-related-pain
#2
Yoshiki Maeda, Shigeyuki Kan, Yuji Fujino, Masahiko Shibata
The fear avoidance model of chronic musculoskeletal pain highlights the importance of pain-related fear in chronification of pain. Although several interventions have been developed based on this model, the following issues remain unresolved: first, whether movement conditioned to pain can evoke fear responses particularly sympathetic activation; second, whether verbal instructions can attenuate conditioned fear of movement-related pain as with direct experience. To investigate these issues, we induced proprioceptive conditioning (learning the relationship between proprioceptive sensations and an aversive event) and extinction learning in healthy volunteers, and we compared psychophysiological and subjective indices of fear between an Instructed and a Normal extinction group...
April 24, 2018: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/29696497/cerebellar-ataxia-neuropathy-vestibular-areflexia-syndrome-canvas-with-chronic-cough-and-preserved-muscle-stretch-reflexes-evidence-for-selective-sparing-of-afferent-ia-fibres
#3
Jon Infante, Antonio García, Karla M Serrano-Cárdenas, Rocío González-Aguado, José Gazulla, Enrique M de Lucas, José Berciano
The aim of this study was to describe five patients with cerebellar ataxia, neuropathy and vestibular areflexia syndrome (CANVAS) with chronic cough and preserved limb muscle stretch reflexes. All five patients were in the seventh decade of age, their gait imbalance having been initiated in the fifth decade. In four patients cough antedated gait imbalance between 15 and 29 years; cough was spasmodic and triggered by variable factors. Established clinical picture included severe hypopallesthesia predominating in the lower limbs with postural imbalance, and variable degree of cerebellar axial and appendicular ataxia, dysarthria and horizontal gaze-evoked nystagmus...
April 25, 2018: Journal of Neurology
https://www.readbyqxmd.com/read/29623047/sympathetic-metabolic-adaptations-and-oxidative-stress-in-autism-spectrum-disorders-how-far-from-physiology
#4
Antonietta Messina, Vincenzo Monda, Francesco Sessa, Anna Valenzano, Monica Salerno, Ilaria Bitetti, Francesco Precenzano, Rosa Marotta, Francesco Lavano, Serena M Lavano, Margherita Salerno, Agata Maltese, Michele Roccella, Lucia Parisi, Roberta I Ferrentino, Gabriele Tripi, Beatrice Gallai, Giuseppe Cibelli, Marcellino Monda, Giovanni Messina, Marco Carotenuto
Autism spectrum disorders (ASD) is a complex and multifaceted neurobehavioral syndrome with no specific cause still identified, despite the worldwide increasing (prevalence for 1,000 children from 6.7 to 14.6, between 2000 and 2012). Many biological and instrumental markers have been suggested as potential predictive factors for the precocious diagnosis during infancy and/or pediatric age. Many studies reported structural and functional abnormalities in the autonomic system in subjects with ASD. Sleep problems in ASD are a prominent feature, having an impact on the social interaction of the patient...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29621927/skin-conduction-levels-differentiate-frontotemporal-dementia-from-alzheimer-s-disease
#5
Mario F Mendez, Sylvia S Fong, Mark M Ashla, Elvira E Jimenez, Andrew R Carr
Patients with behavioral variant frontotemporal dementia (bvFTD) and Alzheimer's disease (AD) differ in basic emotional tone. Skin conduction levels (SCLs), a measure of sympathetic tone, may be a sensitive test for discriminating these two dementias early in their course. Previous research has shown differences in resting SCLs between patients with bvFTD and AD, but no study has evaluated the discriminability of SCLs during different environmental conditions. The authors compared bvFTD patients (N=8), AD patients (N=10), and healthy control subjects (N=9) on SCL measures pertaining to real-life vignettes or scenarios differing in valence and emotional intensity...
April 6, 2018: Journal of Neuropsychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29600795/no-effect-of-abstinence-time-on-nerve-electrophysiological-test-in-premature-ejaculation-patients
#6
Bai-Bing Yang, Jia-Dong Xia, Zhi-Wei Hong, Zheng Zhang, You-Feng Han, Yun Chen, Yu-Tian Dai
The nerve electrophysiological tests may differentiate the treatment of primary premature ejaculation (PPE) in our previous studies. However, no study verifies if the results will be affected by abstinence time. From January to December in 2016, fifty PPE patients ejaculated within 2 min and 28 control subjects were enrolled. The nerve electrophysiological tests, including dorsal nerve somatosensory evoked potential (DNSEP), glans penis somatosensory evoked potential (GPSEP), and penile sympathetic skin response (PSSR), were recorded before and immediately after ejaculation...
March 30, 2018: Asian Journal of Andrology
https://www.readbyqxmd.com/read/29590555/activation-of-trpv1-in-nucleus-tractus-solitarius-reduces-brown-adipose-tissue-thermogenesis-arterial-pressure-and-heart-rate
#7
Mazher Mohammed, Christopher J Madden, Michael C Andresen, Shaun F Morrison
The sympathetic nerve activity (SNA) to brown adipose tissue (BAT) regulates BAT thermogenesis to defend body temperature in cold environments or to produce fever during immune responses. The vagus nerve contains afferents that inhibit the BAT SNA and BAT thermogenesis evoked by skin cooling. We sought to determine whether activation of TRPV1 channels in the nucleus tractus solitarius (NTS), which are prominently expressed in unmyelinated vagal afferents, would affect cold-evoked BAT thermogenesis, cardiovascular parameters, or their vagal afferent-evoked responses...
March 28, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29568686/transthyretin-familial-amyloid-polyneuropathy-ttr-fap-parameters-for-early-diagnosis
#8
Fabiola Escolano-Lozano, Ana Paula Barreiros, Frank Birklein, Christian Geber
Background: Familial transthyretin amyloidosis is a life-threatening disease presenting with sensorimotor and autonomic polyneuropathy. Delayed diagnosis has a detrimental effect on treatment and prognosis. To facilitate diagnosis, we analyzed data patterns of patients with transthyretin familial amyloid polyneuropathy (TTR-FAP) and compared them to polyneuropathies of different etiology for clinical and electrophysiological discriminators. Methods: Twenty-four patients with TTR-FAP and 48 patients with diabetic polyneuropathy (dPNP) were investigated (neurological impairment score NIS; neurological disability score NDS) in a cross-sectional design...
January 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29558039/analysis-of-peripheral-nerve-and-autonomic-nervous-system-function-and-the-stage-of-microangiopathy-in-patients-with-secondary-raynaud-s-phenomenon-in-the-course-of-connective-tissue-diseases
#9
Izabela Gosk-Bierska, Maria Misterska-Skóra, Marta Wasilewska, Małgorzata Bilińska, Jerzy Gosk, Rajmund Adamiec, Magdalena Koszewicz
BACKGROUND: The pathogenesis of secondary Raynaud's phenomenon (SRP) associated with connective tissue diseases (CTD) is not entirely understood. Nervous system dysfunction and microangiopathy are considered to be causes of this pathology. OBJECTIVES: Peripheral and autonomic nervous system function, the stage of microangiopathy, and the relationships between these in patients with SRP were analyzed. MATERIAL AND METHODS: In the study, 20 patients with CTD-related SRP and 30 healthy controls were subject to capillaroscopy, standard conduction velocity tests and conduction velocity distribution (CVD) tests in ulnar and peroneal nerves, heart rate variability (HRV), and sympathetic skin response (SSR) tests...
March 20, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29536783/effects-of-remifentanil-and-dexmedetomidine-on-the-mother-s-awareness-and-neonatal-apgar-scores-in-caesarean-section-under-general-anaesthesia
#10
Kenan Kart, Ayse Hanci
Objective This study aimed to compare the effects of remifentanil and dexmedetomidine on awareness during the induction of general anaesthesia. Material and Methods Ninety patients scheduled for elective caesarean section under general anaesthesia were included and randomly divided into three anaesthesia groups: 2 mg/kg propofol (control group); 2 mg/kg propofol and 1 µg/kg dexmedetomidine (dexmedetomidine group); and 2 mg/kg propofol and 1 µg/kg remifentanil (remifentanil group). All patients received routine monitoring, and Apgar scores at 1 and 5 minutes were recorded...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29500922/electrodermal-response-to-auditory-stimuli-in-relation-to-menopausal-transition-period
#11
Ashwini Kishan, Nikitha Marakur, Shailaja Moodithaya, Amrit M Mirajkar
BACKGROUND: Menopause-associated estrogen deficiency results in climacteric symptoms like vasomotor, psychological and sleep disturbances that cause a decline in the quality of life. Electrodermal activity (EDA), a psychophysiological measure, reflects sympathetic activity, which provides information associated with individual's emotions, phobias, arousal, cognition and stress. The study compared electrodermal response to auditory stimuli between postmenopausal and perimenopausal women with and without symptoms and also correlated the association of scores of the menopausal transition symptoms with indices of EDA...
March 28, 2018: Journal of Basic and Clinical Physiology and Pharmacology
https://www.readbyqxmd.com/read/29500655/cutaneous-neural-activity-and-endothelial-involvement-in-cold-induced-vasodilatation
#12
Gary J Hodges, Matthew M Mallette, Stephen S Cheung
Whether sympathetic withdrawal or endothelial dilators such as nitric oxide (NO) contributes to cold-induced vasodilation (CIVD) events is unclear. We measured blood flow and finger skin temperature (Tfinger ) of the index finger in nine participants during hand immersion in a water bath at 35 °C for 30 min, then at 8 °C for 30 min. Data were binned into 10 s averages for the entire 60 min protocol for laser-Doppler flux (LDF) and Tfinger . At baseline, Tfinger was 35.3 ± 0.2 °C and LDF was 227 ± 28 PU...
March 2, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29468632/autonomic-function-test-in-progressive-lacunar-infarction
#13
S Y Ha, K M Park, J Park, S E Kim, B I Lee, K J Shin
OBJECTIVE: Neurological progression is a major problem in managing the patients with acute lacunar infarction. The purpose of this was to investigate whether autonomic dysfunction is associated with neurological progression in patients with acute lacunar infarction. MATERIALS AND METHODS: The study comprised 60 patients with acute lacunar infarction. All enrolled subjects underwent autonomic function tests including the 30° head-up tilt test, Valsalva test, heart rate response to deep breathing, and sympathetic skin response...
February 21, 2018: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/29448083/sympathetic-arousal-but-not-disturbed-executive-functioning-mediates-the-impairment-of-cognitive-flexibility-under-stress
#14
Martin Marko, Igor Riečanský
Cognitive flexibility emerges from an interplay of multiple cognitive systems, of which lexical-semantic and executive are thought to be the most important. Yet this has not been addressed by previous studies demonstrating that such forms of flexible thought deteriorate under stress. Motivated by these shortcomings, the present study evaluated several candidate mechanisms implied to mediate the impairing effects of stress on flexible thinking. Fifty-seven healthy adults were randomly assigned to psychosocial stress or control condition while assessed for performance on cognitive flexibility, working memory capacity, semantic fluency, and self-reported cognitive interference...
May 2018: Cognition
https://www.readbyqxmd.com/read/29438680/ischemia-reperfusion-injury-alters-skin-microvascular-responses-to-local-heating-of-the-index-finger
#15
Gregory W McGarr, Gary J Hodges, Matthew M Mallette, Stephen S Cheung
BACKGROUND: Ischemia-reperfusion (IR) injury impairs microcirculatory function by reducing nitric oxide (NO) bioavailability and increasing sympathetic tone. This study non-invasively examined the effects of acute upper limb IR injury on local thermal hyperemia (LTH) in glabrous and non-glabrous finger skin. MATERIALS AND METHODS: In ten healthy males, LTH was examined twice (~7-10 d apart) for each skin type on the index finger using laser-Doppler flowmetry in a counterbalanced design with either 1) 20 min ischemia, followed by reperfusion (ISCH) or 2) time-matched control (SHAM)...
February 10, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29435867/autonomic-function-testing-in-spinocerebellar-ataxia-type-2
#16
Elisabetta Indelicato, Alessandra Fanciulli, Jean Pierre Ndayisaba, Wolfgang Nachbauer, Roberta Granata, Julia Wanschitz, Michaela Wagner, Elke R Gizewski, Werner Poewe, Gregor K Wenning, Sylvia Boesch
PURPOSE: To assess whether autonomic failure belongs to the clinical spectrum of spinocerebellar ataxia type 2 (SCA2), an autosomal dominant genetic disorder showing progressive cerebellar and brainstem dysfunction. METHODS: We evaluated cardiovascular autonomic function in 8 patients with SCA2 and 16 age- and gender-matched healthy controls. Other autonomic domains were examined through standardized questionnaires and by testing the skin sympathetic reflex. RESULTS: Patients with SCA2 showed normal responses to cardiovascular autonomic function tests, with the exception of lower baroreflex sensitivity upon standing compared to controls...
February 12, 2018: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/29429224/-correlation-of-perceptive-temperature-threshold-of-oral-mucosa-and-sympathetic-skin-response
#17
Z G Wang, T Z Dong, J Li, G Chen
Objectives: To explore the critical values of temperature perception in various mucosa sites of oral cavity and to draw the perceptive temperature threshold maps in healthy volunteers. To observe the interrelationship between subjective cognitive perception and sympathetic skin response (SSR) under various levels of thermal stimuli. Methods: Forty-two healthy volunteers (recruited from the students of Tianjin Medical University, 16 females and 26 males) were enrolled in the present study. The whole oral mucosa of each subject was divided into multiple partitions according to the mucosa type as well as tooth position...
February 9, 2018: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/29353770/altered-autonomic-reactivity-in-korean-military-soldiers-with-adjustment-disorder
#18
Dae Jong Oh, Do Hyeong Lee, Eun Young Kim, Woo Jung Kim, Myung Jae Baik
Only few studies addressing the biological background of adjustment disorder (AD) exist. We examined the psychophysiological correlates indicative of autonomic regulation in AD. Heart rate variability (HRV), skin conductance, skin temperature, electromyography, and respiration were measured during serial stress tasks in 33 soldiers with AD and 60 healthy controls (HC). Patients with AD displayed lower relative power of high frequency (rHF) HRV and higher relative power of very low frequency (rVLF) HRV compared with HC at baseline...
March 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29330174/views-and-experiences-of-seeking-information-and-help-for-vitiligo-a-qualitative-study-of-written-accounts
#19
Emma Teasdale, Ingrid Muller, Amirah Abdullah Sani, Kim S Thomas, Beth Stuart, Miriam Santer
OBJECTIVES: Vitiligo is a relatively common autoimmune condition causing loss of skin pigment. Around 1 in 100 people in the UK develop vitiligo. It can have a significant impact on quality of life for many of those affected. How people access information and help for vitiligo may influence how they manage such impact. We aimed to explore people's views and experiences of seeking health information and help for vitiligo. DESIGN: Qualitative analysis of free-text responses to four open-ended questions in an online survey...
January 11, 2018: BMJ Open
https://www.readbyqxmd.com/read/29306355/neurophysiology-of-the-pelvic-floor-in-clinical-practice-a-systematic-literature-review
#20
REVIEW
Fiorella Bianchi, Giovanna M Squintani, M Osio, A Morini, C Bana, G Ardolino, S Barbieri, L Bertolasi, R Caramelli, F Cogiamanian, A Currà, G de Scisciolo, C Foresti, V Frasca, E Frasson, M Inghilleri, L Maderna, L Motti, E Onesti, M C Romano, U Del Carro
Neurophysiological testing of the pelvic floor is recognized as an essential tool to identify pathophysiological mechanisms of pelvic floor disorders, support clinical diagnosis, and aid in therapeutic decisions. Nevertheless, the diagnostic value of these tests in specific neurological diseases of the pelvic floor is not completely clarified. Seeking to fill this gap, the members of the Neurophysiology of the Pelvic Floor Study Group of the Italian Clinical Neurophysiology Society performed a systematic review of the literature to gather available evidence for and against the utility of neurophysiological tests...
October 2017: Functional Neurology
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