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https://www.readbyqxmd.com/read/28097372/the-role-of-neuropeptides-in-adverse-myocardial-remodeling-and-heart-failure
#1
REVIEW
Alexander Widiapradja, Prasad Chunduri, Scott P Levick
In addition to traditional neurotransmitters of the sympathetic and parasympathetic nervous systems, the heart also contains numerous neuropeptides. These neuropeptides not only modulate the effects of neurotransmitters, but also have independent effects on cardiac function. While in most cases the physiological actions of these neuropeptides are well defined, their contributions to cardiac pathology are less appreciated. Some neuropeptides are cardioprotective, some promote adverse cardiac remodeling and heart failure, and in the case of others their functions are unclear...
January 17, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28095501/birth-weight-and-its-relationship-with-the-cardiac-autonomic-balance-in-healthy-children
#2
Livia Victorino Souza, Vanessa Oliveira, Franciele De Meneck, Ana Paula Grotti Clemente, Maria Wany Louzada Strufaldi, Maria do Carmo Franco
Several studies indicate that the fetal environment plays a significant role in the development of cardiometabolic disease later in life. However, a few studies present conflicting data about the correlation between birth weight and the impairment of cardiac autonomic modulation. The purpose of the present study was to provide further knowledge to elucidate this contradictory relationship. One hundred children aged 5 and 14 years had anthropometric parameters, body composition and blood pressure levels determined...
2017: PloS One
https://www.readbyqxmd.com/read/28093795/the-natural-history-of-pure-autonomic-failure-a-u-s-prospective-cohort
#3
Horacio Kaufmann, Lucy Norcliffe-Kaufmann, Jose-Alberto Palma, Italo Biaggioni, Phillip A Low, Wolfgang Singer, David S Goldstein, Amanda C Peltier, Cyndia A Shibao, Christopher H Gibbons, Roy Freeman, David Robertson
OBJECTIVE: To define the clinical features and biomarkers that predict which patients with pure autonomic failure will develop Parkinson disease, dementia with Lewy bodies, or multiple system atrophy. METHODS: One hundred patients who presented with pure autonomic failure were recruited at 5 medical centers in the U.S. Seventy-four patients agreed to be followed prospectively. Patients underwent clinical evaluations including neurological rating scales, sleep questionnaires, smell test, and sympathetic and parasympathetic cardiovascular autonomic function tests...
January 17, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28091707/gastric-distension-causes-changes-in-heart-rate-and-arterial-blood-pressure-by-affecting-the-crosstalk-between-vagal-and-splanchnic-systems-in-anesthetised-rats
#4
Maurizio Sabbatini, Elena Grossini, Claudio Molinari, David A S G Mary, Giovanni Vacca, Mario Cannas
Various hindbrain nuclei have been demonstrated to be involved in the control of the cardiovascular reflexes elicited by both non-noxious and noxious gastric distension, through parasympathetic and sympathetic activation. The different role played by the branches of autonomic nervous system in exerting these effects and their crosstalk in relation to low-/high-pressure distension rate has not been examined yet. Therefore, in the present work, monolateral and bilateral vagotomy and splanchnicotomy were performed in anesthetised rats to analyse the involvement of hindbrain nuclei in haemodynamic changes caused by gastric distension at high (80 mmHg) and low (15 mmHg) pressure...
January 13, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28088468/hypothalamic-effects-of-thyroid-hormone
#5
Zhi Zhang, Anita Boelen, Peter H Bisschop, Andries Kalsbeek, Eric Fliers
Thyroid hormone (TH) is a key driver of metabolism in mammals. Plasma concentrations of TH are kept within a narrow range by negative feedback regulation in the hypothalamus-pituitary-thyroid (HPT) axis. Plasma TH concentrations are an important determinant of metabolic processes in liver and brown adipose tissue (BAT). In addition to endocrine effects of TH derived from the circulation, recent studies have demonstrated additional neural routes for intrahypothalamic thyroid hormone to regulate metabolism in liver and BAT via the sympathetic and parasympathetic branch of the autonomic nervous system (ANS)...
January 11, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28080968/interoception-homeostatic-emotions-and-sympathovagal-balance
#6
Irina A Strigo, Arthur D Bud Craig
We briefly review the evidence for distinct neuroanatomical substrates that underlie interoception in humans, and we explain how they substantialize feelings from the body (in the insular cortex) that are conjoined with homeostatic motivations that guide adaptive behaviours (in the cingulate cortex). This hierarchical sensorimotor architecture coincides with the limbic cortical architecture that underlies emotions, and thus we regard interoceptive feelings and their conjoint motivations as homeostatic emotions We describe how bivalent feelings, emotions and sympathovagal balance can be organized and regulated efficiently in the bicameral forebrain as asymmetric positive/negative, approach/avoidance and parasympathetic/sympathetic components...
November 19, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28079874/cerebral-modulation-of-the-autonomic-nervous-system-in-term-infants
#7
N Schneebaum Sender, R B Govindan, M T Whitehead, A N Massaro, M Metzler, J Wang, Y I Cheng, A J du Plessis
OBJECTIVE: Central topography of autonomic nervous system (ANS) function has yet to be fully deciphered. In adults it has been shown to lateralize sympathetic and parasympathetic influence predominantly to the right and left cerebral hemispheres, respectively. We examined functional topography of central ANS in newborn subjects utilizing spectral analysis of heart rate variability (HRV), an established measure of ANS function. STUDY DESIGN: We studied newborns with hypoxic-ischemic encephalopathy participating in a prospective study undergoing a therapeutic hypothermia protocol...
January 12, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28078865/parasympathetic-nervous-system-involvement-in-food-allergy-description-of-a-paediatric-case
#8
G Vitaliti, P Pavone, G R Giugno, M Vecchio, S Cocuzza, A Serra, L Maiolino, P Di Mauro, R Lubrano, R Falsaperla
The latest research data emphasize the interaction between the nervous and the immune systems. It has been demonstrated that the central nervous system (CNS) can be involved secondarily due to blood brain barrier (BBB) disruption via pro-inflammatory cytokines released in allergy. More recently it was demonstrated that the parasympathetic nervous system (PNS) could also be equally involved in models of peripheral inflammation such as food allergy; although this last clinical presentation has rarely been described...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28070646/-efferent-pupillary-defects-anisocoria-and-impaired-light-reaction
#9
H Wilhelm, C Kelbsch
Efferent pupillary defects are caused by problems of sympathetic or parasympathetic innervation or structural iris changes presenting as anisocoria or impaired pupillary light reaction. This overview describes the diagnostic steps for evaluating efferent pupillary disorders and outlines further steps of work-up.
January 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28060443/depression-impacts-the-physiological-responsiveness-of-mother-daughter-dyads-during-social-interaction
#10
Marlissa C Amole, Jill M Cyranowski, Aidan G C Wright, Holly A Swartz
BACKGROUND: Maternal depression is associated with increased risk of psychiatric illness in offspring. While risk may relate to depressed mothers' difficulties regulating emotions in the context of interacting with offspring, physiological indicators of emotion regulation have rarely been examined during mother-child interactions-and never among mother-adolescent dyads in which both mother and adolescent have histories of major depressive disorder (MDD). METHODS: We examined changes in high-frequency heart rate variability (HF-HRV), an indicator of parasympathetic (vagal) function that has been related to depression, stress, social engagement, and emotion regulation, in 46 mother-daughter dyads (23 in which both mother and daughter had an MDD history and 23 never-depressed controls)...
January 6, 2017: Depression and Anxiety
https://www.readbyqxmd.com/read/28057794/purinergic-signaling-in-the-cardiovascular-system
#11
REVIEW
Geoffrey Burnstock
There is nervous control of the heart by ATP as a cotransmitter in sympathetic, parasympathetic, and sensory-motor nerves, as well as in intracardiac neurons. Centers in the brain control heart activities and vagal cardiovascular reflexes involve purines. Adenine nucleotides and nucleosides act on purinoceptors on cardiomyocytes, AV and SA nodes, cardiac fibroblasts, and coronary blood vessels. Vascular tone is controlled by a dual mechanism. ATP, released from perivascular sympathetic nerves, causes vasoconstriction largely via P2X1 receptors...
January 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/28056816/optimization-of-pressure-settings-during-adaptive-servo-ventilation-support-using-real-time-heart-rate-variability-assessment-initial-case-report
#12
Teruhiko Imamura, Daisuke Nitta, Koichiro Kinugawa
BACKGROUND: Adaptive servo-ventilation (ASV) therapy is a recent non-invasive positive pressure ventilation therapy that was developed for patients with heart failure (HF) refractory to optimal medical therapy. However, it is likely that ASV therapy at relatively higher pressure setting worsens some of the patients' prognosis compared with optimal medical therapy. Therefore, identification of optimal pressure settings of ASV therapy is warranted. CASE PRESENTATION: We present the case of a 42-year-old male with HF, which was caused by dilated cardiomyopathy, who was admitted to our institution for evaluating his eligibility for heart transplantation...
January 5, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28055264/inos-inhibition-improves-autonomic-dysfunction-and-oxidative-status-in-hypertensive-obese-rats
#13
Natalia Veronez da Cunha, Fernanda Novi Cortegoso Lopes, Carolina Panis, Rubens Cecchini, Phileno Pinge-Filho, Marli Cardoso Martins-Pinge
It has been suggested that nitric oxide (NO) from iNOS source is involved in inflammation and oxidative stress, and hypertension in obese subjects involves an inflammatory process. However, no study evaluated the participation of iNOS inhibition on cardiovascular, autonomic, and inflammatory parameters in obese rats. Obesity was induced by the administration of 4 mg/g body weight of monosodium glutamate (MSG) or equimolar saline (CTR) in newborn rats. On the 60th day, treatment with aminoguanidine (Amino, 50 mg/kg), an iNOS inhibitor, or 0...
January 5, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28054752/opposite-modulatory-effects-of-selective-and-non-selective-cyclooxygenase-inhibition-on-cardiovascular-and-autonomic-consequences-of-cyclosporine-in-female-rats
#14
Karim S Ibrahim, Ahmed F El-Yazbi, Hanan M El-Gowelli, Mahmoud M El-Mas
Non-steroidal anti-inflammatory drugs (NSAIDs) and the immunosuppressant drug cyclosporine (CSA) are concurrently administered in arthritis. Here, we investigated whether diclofenac (non-selective inhibitor of cyclooxygenase-1 and 2, COX-1/COX-2), celecoxib (selective COX-2 inhibitor) or SC560 (selective COX-1 inhibitor) interact variably with hemodynamic effects of CSA in conscious female rats. Changes caused by CSA (10 mg/kg i.v.) in blood pressure (BP), heart rate (HR), HR variability (HRV) and myocardial contractility were assessed in absence and presence of individual NSAIDs (10 mg/kg each)...
January 5, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28051823/lumbar-sympathetic-chain-anatomical-variation-and-clinical-perspectives
#15
P Jain, K Raza, S Singh, C Kumari, S Kaler, N Rani
The sympathetic and parasympathetic nervous systems constitute the autonomic nervous system which controls the entropy of the body and maintain the equilibrium. The sympathetic chain forms a definitive anatomic entity which is quite variable with respect to its position and the number of ganglia. The sympathetic nervous system causes vasoconstriction and thus forms the basis of Lumbar sympathetic surgeries being performed in patients with peripheral vascular diseases. The anatomic variations in this region hence gains immense importance for the operating surgeons and consulting radiologists...
November 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28051319/effects-of-yoga-on-heart-rate-variability-and-depressive-symptoms-in-women-a-randomized-controlled-trial
#16
I-Hua Chu, Wen-Lan Wu, I-Mei Lin, Yu-Kai Chang, Yuh-Jen Lin, Pin-Chen Yang
OBJECTIVES: The purpose of the study was to investigate the effects of a 12-week yoga program on heart rate variability (HRV) and depressive symptoms in depressed women. METHODS: This was a randomized controlled trial. Twenty-six sedentary women scoring ≥14 on the Beck Depression Inventory-II were randomized to either the yoga or the control group. The yoga group completed a 12-week yoga program, which took place twice a week for 60 min per session and consisted of breathing exercises, yoga pose practice, and supine meditation/relaxation...
January 4, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28045865/effects-of-aerobic-exercise-on-pain-sensitivity-heart-rate-recovery-and-health-related-quality-of-life-in-patients-with-chronic-musculoskeletal-pain
#17
Şeyda Öte Karaca, Nesrin Demirsoy, Zafer Günendi
We aimed to investigate the effects of aerobic exercise on pain perception, sensitivity, and health-related quality of life; to assess its effect on parasympathetic tonus by analysis of heart rate recovery; and to examine the effects of parasympathetic tone on pain sensitivity in patients with chronic musculoskeletal pain. Fifty patients with chronic musculoskeletal pain were randomized into two groups: control group (C group) and aerobic exercise group (AE group). Both groups received conventional physical therapy for 2 weeks; the AE group performed submaximal aerobic exercise on a treadmill for 30 min additionally...
December 29, 2016: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28045562/parasympathetic-baroreflexes-and-heart-rate-variability-during-acute-stage-of-sport-concussion-recovery
#18
Scott Bishop, Ryan Dech, Taylor Baker, Matthew Butz, Kaishan Aravinthan, J Patrick Neary
PRIMARY OBJECTIVE: To assess and compare the parasympathetic state of individuals in healthy vs concussion groups, by measuring cardiovascular metrics under resting and baroreflex conditions using a squat-stand manoeuvre. RESEARCH DESIGN: This was a retrospective mixed-method study, with participants who sustained a medically diagnosed sport concussion (n = 12), being tested within 72-hours post-injury. METHODS AND PROCEDURES: Participant's heart rate (Electrocardiogram, ECG) and blood pressure (finger plethysmography) data was collected during rest and during 10-second squat-stands (10SS, 0...
January 3, 2017: Brain Injury: [BI]
https://www.readbyqxmd.com/read/28045308/everyday-unfair-treatment-and-multisystem-biological-dysregulation-in-african-american-adults
#19
Anthony D Ong, David R Williams, Ujuonu Nwizu, Tara L Gruenewald
OBJECTIVE: Increasing evidence suggests that chronic exposure to unfair treatment or day-to-day discrimination increases risk for poor health, but data on biological stress mechanisms are limited. This study examined chronic experiences of unfair treatment in relation to allostatic load (AL), a multisystem index of biological dysregulation. METHOD: Data are from a sample of 233 African-American adults (37-85 years; 64% women). Perceptions of everyday unfair treatment were measured by questionnaire...
January 2017: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/28045306/examining-the-association-between-perceived-discrimination-and-heart-rate-variability-in-african-americans
#20
LaBarron K Hill, Lori S Hoggard, Ashley S Richmond, DeLeon L Gray, Dewayne P Williams, Julian F Thayer
OBJECTIVE: Previous research attempting to delineate the role of discrimination in racial/ethnic disparities in hypertension has focused largely on blood pressure, which is chiefly governed by the sympathetic branch of the autonomic nervous system. Consequently, few studies have considered the role of the parasympathetic branch and particularly its regulation of the heart via the vagus nerve. METHOD: In the present cross-sectional study, we employed hierarchical linear regressions to examine associations between perceived ethnic discrimination and resting heart rate variability (HRV), an important biomarker of parasympathetic cardiac modulation and overall health, in a sample (N = 103) of young, healthy African American participants (58% female, Mage = 19...
January 2017: Cultural Diversity & Ethnic Minority Psychology
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