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Brain heart interaction

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https://www.readbyqxmd.com/read/28154104/heart-brain-axis-effects-of-neurologic-injury-on-cardiovascular-function
#1
Pouya Tahsili-Fahadan, Romergryko G Geocadin
A complex interaction exists between the nervous and cardiovascular systems. A large network of cortical and subcortical brain regions control cardiovascular function via the sympathetic and parasympathetic outflow. A dysfunction in one system may lead to changes in the function of the other. The effects of cardiovascular disease on the nervous system have been widely studied; however, our understanding of the effects of neurological disorders on the cardiovascular system has only expanded in the past 2 decades...
February 3, 2017: Circulation Research
https://www.readbyqxmd.com/read/28144278/altered-sympathovagal-balance-and-pain-hypersensitivity-in-tnbs-induced-colitis
#2
Katarzyna Ciesielczyk, Agata Furgała, Łukasz Dobrek, Kajetan Juszczak, Piotr Thor
INTRODUCTION: Pain hypersensitivity, abnormal motility and autonomic dysfunction contribute to functional symptoms of inflammatory bowel disease (IBD). MATERIAL AND METHODS: The aim of this study was to assess: nociceptive thresholds for mechanical allodynia (MA) and thermal hyperalgesia (TH), intestinal motility (distal colonic transit and emptying), and cardiac autonomic neuropathy (indices of heart rate variability - HRV) in male Wistar rats with experimental trinitrobenzene sulfonic acid (TNBS) induced colitis...
February 1, 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28138526/a-conducting-polymer-with-enhanced-electronic-stability-applied-in-cardiac-models
#3
Damia Mawad, Catherine Mansfield, Antonio Lauto, Filippo Perbellini, Geoffrey W Nelson, Joanne Tonkin, Sean O Bello, Damon J Carrad, Adam P Micolich, Mohd M Mahat, Jennifer Furman, David Payne, Alexander R Lyon, J Justin Gooding, Sian E Harding, Cesare M Terracciano, Molly M Stevens
Electrically active constructs can have a beneficial effect on electroresponsive tissues, such as the brain, heart, and nervous system. Conducting polymers (CPs) are being considered as components of these constructs because of their intrinsic electroactive and flexible nature. However, their clinical application has been largely hampered by their short operational time due to a decrease in their electronic properties. We show that, by immobilizing the dopant in the conductive scaffold, we can prevent its electric deterioration...
November 2016: Science Advances
https://www.readbyqxmd.com/read/28101763/mir-126-affects-brain-heart-interaction-after-cerebral-ischemic-stroke
#4
Jieli Chen, Chengcheng Cui, Xiaoping Yang, Jiang Xu, Poornima Venkat, Alex Zacharek, Peng Yu, Michael Chopp
Cardiovascular diseases are approximately three times higher in patients with neurological deficits than in patients without neurological deficits. MicroRNA-126 (MiR-126) facilitates vascular remodeling and decreases fibrosis and is emerging as an important factor in the pathogenesis of cardiovascular diseases and cerebral stroke. In this study, we tested the hypothesis that decreased miR-126 after ischemic stroke may play an important role in regulating cardiac function. Wild-type (WT), specific conditional-knockout endothelial cell miR-126 (miR-126(EC-/-)), and miR-126 knockout control (miR-126(fl/fl)) mice were subjected to distal middle cerebral artery occlusion (dMCAo) (n = 10/group)...
January 19, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28077708/dynamic-shifts-in-large-scale-brain-network-balance-as-a-function-of-arousal
#5
Christina B Young, Gal Raz, Daphne Everaerd, Christian F Beckmann, Indira Tendolkar, Talma Hendler, Guillén Fernández, Erno J Hermans
: The ability to temporarily prioritize rapid and vigilant reactions over slower higher-order cognitive functions is essential for adaptive responding to threat. This reprioritization is believed to reflect shifts in resource allocation between large-scale brain networks that support these cognitive functions, including the salience and executive control networks. However, how changes in communication within and between such networks dynamically unfold as a function of threat-related arousal remains unknown...
January 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28074902/a-reduced-mechanical-model-for-camp-modulated-gating-in-hcn-channels
#6
Stephanie Weißgraeber, Andrea Saponaro, Gerhard Thiel, Kay Hamacher
We developed an in silico mechanical model to analyze the process of cAMP-induced conformational modulations in hyperpolarization-activated cyclic nucleotide-gated (HCN) channels, which conduct cations across the membrane of mammalian heart and brain cells. The structural analysis reveals a quaternary twist in the cytosolic parts of the four subunits in the channel tetramer. This motion augments the intrinsic dynamics of the very same protein structure. The pronounced differences between the cAMP bound and unbound form include a mutual interaction between the C-linker of the cyclic nucleotide binding domain (CNBD) and the linker between the S4 and S5 transmembrane domain of the channel...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28069685/associations-of-body-mass-index-with-laboratory-and-biomarkers-in-patients-with-acute-heart-failure
#7
Koen W Streng, Jozine M Ter Maaten, John G Cleland, Christopher M O'Connor, Beth A Davison, Marco Metra, Michael M Givertz, John R Teerlink, Piotr Ponikowski, Daniel M Bloomfield, Howard C Dittrich, Hans L Hillege, Dirk J van Veldhuisen, Adriaan A Voors, Peter van der Meer
BACKGROUND: Plasma concentrations of natriuretic peptides decline with obesity in patients with heart failure. Whether this is true for other biomarkers is unknown. We investigated a wide range of biomarker profiles in acute heart failure across the body mass index (BMI) spectrum. METHODS AND RESULTS: A total of 48 biomarkers, assessing multiple pathophysiological pathways, were measured in 2033 patients included in PROTECT (Placebo-Controlled Randomized Study of the Selective A1 Adenosine Receptor Antagonist Rolofylline for Patients Hospitalized With Acute Decompensated Heart Failure and Volume Overload to Assess Treatment Effect on Congestion and Renal Function), a trial comparing the effects of rolofylline to placebo in patients with acute heart failure...
January 2017: Circulation. Heart Failure
https://www.readbyqxmd.com/read/28018896/factors-influencing-neurodevelopment-after-cardiac-surgery-during-infancy
#8
REVIEW
Hedwig Hubertine Hövels-Gürich
Short- and long-term neurodevelopmental (ND) disabilities with negative impact on psychosocial and academic performance, quality of life, and independence in adulthood are known to be the most common sequelae for surviving children after surgery for congenital heart disease (CHD). This article reviews influences and risk factors for ND impairment. For a long time, the search for independent risk factors was focused on the perioperative period and modalities of cardiopulmonary bypass (CPB). CPB operations to ensure intraoperative vital organ perfusion and oxygen supply with or without circulatory arrest or regional cerebral perfusion bear specific risks...
2016: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28011172/wake-sleep-and-cardiovascular-regulatory-changes-in-rats-made-obese-by-a-high-fat-diet
#9
Marco Luppi, Abed A Al-Jahmany, Flavia Del Vecchio, Matteo Cerri, Alessia Di Cristoforo, Timna Hitrec, Davide Martelli, Emanuele Perez, Giovanni Zamboni, Roberto Amici
Obesity is known to be associated with alterations in wake-sleep (WS) architecture and cardiovascular parameters. This study was aimed at assessing the possible influence of diet-induced obesity (DIO) on sleep homeostasis and on the WS state-dependent levels of arterial pressure (AP) and heart rate in the rat. Two groups of age-matched Sprague-Dawley rats were fed either a high-fat hypercaloric diet, leading to DIO, or a normocaloric standard diet (lean controls) for 8 weeks. While under general anesthesia, animals were implanted with instrumentation for the recording of electroencephalogram, electromyogram, arterial pressure, and deep brain temperature...
December 21, 2016: Behavioural Brain Research
https://www.readbyqxmd.com/read/27979044/serum-brain-derived-neurotrophic-factor-and-risk-of-atrial-fibrillation
#10
Faisal Rahman, Jayandra J Himali, Xiaoyan Yin, Alexa S Beiser, Patrick T Ellinor, Steven A Lubitz, Ramachandran S Vasan, Jared W Magnani, David D McManus, Sudha Seshadri, Emelia J Benjamin
: Brain-derived neurotrophic factor (BDNF) is expressed by endothelial cells and can affect cardiovascular function. We examined if serum BDNF was associated with risk of incident atrial fibrillation (AF) in the Framingham Heart Study. METHODS: We studied individuals without an AF diagnosis at baseline from the Framingham original and offspring cohorts. We used age- and sex-adjusted, and multivariable-adjusted Cox proportional hazards regression models to examine the association of serum BDNF concentrations with 10-year risk of incident AF...
January 2017: American Heart Journal
https://www.readbyqxmd.com/read/27929741/cerebral-microvascular-dysfunction-and-inflammation-are-improved-by-centrally-acting-antihypertensive-drugs-in-metabolic-syndrome
#11
Vanessa Estato, Alessandro Nascimento, Barbara Antunes, Fabiana Gomes, Laura Coelho, Raquel Rangel, Luciana Garzoni, Anissa Daliry, Pascal Bousquet, Eduardo Tibiriçá
BACKGROUND: We aimed to investigate the effects of chronic oral treatment with centrally acting antihypertensive drugs, such as clonidine (CLO), an α2-adrenoceptor agonist, or LNP599, a selective I1 imidazoline receptor agonist, on brain microvascular function in rats with high-fat diet (HFD)-induced metabolic syndrome. METHODS: Male Wistar Kyoto rats were maintained on a normal diet (CON) or a HFD for 20 weeks. After this period, the HFD group received oral CLO (0...
February 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/27912172/brain-heart-communication-evidence-for-central-pacemaker-oscillations-with-a-dominant-frequency-at-0-1hz-in-the-cingulum
#12
Gert Pfurtscheller, Andreas R Schwerdtfeger, Annemarie Seither-Preisler, Clemens Brunner, Christoph Stefan Aigner, Joana Brito, Marciano P Carmo, Alexandre Andrade
OBJECTIVES: In the brain and heart, oscillations at about 0.1Hz are conspicuous. It is therefore worthwhile to study the interaction between intrinsic BOLD oscillations (0.1Hz) and slow oscillations in heart rate interval (RRI) signals and differentiate between their neural and vascular origin. METHODS: We studied the phase-coupling with a 3T scanner with high scanning rate between BOLD signals in 22 regions and simultaneously recorded RRI oscillations in 23 individuals in two resting states...
January 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27911380/method-for-identifying-small-molecule-inhibitors-of-the-protein-protein-interaction-between-hcn1-and-trip8b
#13
Ye Han, Kyle A Lyman, Matt Clutter, Gary E Schiltz, Quratul-Ain Ismail, Xiangying Cheng, Chi-Hao Luan, Dane M Chetkovich
Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels are expressed ubiquitously throughout the brain, where they function to regulate the excitability of neurons. The subcellular distribution of these channels in pyramidal neurons of hippocampal area CA1 is regulated by tetratricopeptide repeat-containing Rab8b interacting protein (TRIP8b), an auxiliary subunit. Genetic knockout of HCN pore forming subunits or TRIP8b, both lead to an increase in antidepressant-like behavior, suggesting that limiting the function of HCN channels may be useful as a treatment for Major Depressive Disorder (MDD)...
November 11, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27909095/dynamic-shifts-in-large-scale-brain-network-balance-as-a-function-of-arousal
#14
Christina B Young, Gal Raz, Daphne Everaerd, Christian F Beckmann, Indira Tendolkar, Talma Hendler, Guillén Fernández, Erno J Hermans
: The ability to temporarily prioritize rapid and vigilant reactions over slower higher-order cognitive functions is essential for adaptive responding to threat. This reprioritization is believed to reflect shifts in resource allocation between large-scale brain networks that support these cognitive functions, including the salience and executive control networks. How changes in communication within and between such networks dynamically unfold as a function of threat-related arousal, however, remains unknown...
December 1, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27908653/molecular-changes-in-children-with-heart-failure-undergoing-left-ventricular-assist-device-therapy
#15
Elizabeth Medina, Carmen C Sucharov, Penny Nelson, Shelley D Miyamoto, Brian L Stauffer
OBJECTIVE: To determine whether left ventricular assist device (LVAD) treatment in children with heart failure would result in the modification of molecular pathways involved in heart failure pathophysiology. STUDY DESIGN: Forty-seven explanted hearts from children were studied (16 nonfailing control, 20 failing, and 11 failing post-LVAD implantation [F-LVAD]). Protein expression and phosphorylation states were determined by receptor binding assays and Western blots...
November 29, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27887735/influence-of-general-anaesthesia-on-the-brainstem
#16
L Bosch, J Fernández-Candil, A León, P L Gambús
The exact role of the brainstem in the control of body functions is not yet well known and the same applies to the influence of general anaesthesia on brainstem functions. Nevertheless in all general anaesthesia the anaesthesiologist should be aware of the interaction of anaesthetic drugs and brainstem function in relation to whole body homeostasis. As a result of this interaction there will be changes in consciousness, protective reflexes, breathing pattern, heart rate, temperature or arterial blood pressure to name a few...
November 22, 2016: Revista Española de Anestesiología y Reanimación
https://www.readbyqxmd.com/read/27884747/novel-function-of-%C3%AE-1d-l-type-calcium-channel-in-the-atria
#17
Ujala Srivastava, Ademuyiwa S Aromolaran, Frank Fabris, Deana Lazaro, John Kassotis, Yongxia Qu, Mohamed Boutjdir
Ca entry through atrial L-type Calcium channels (α1C and α1D) play an important role in muscular contraction, regulation of gene expression, and release of hormones including atrial natriuretic peptide (ANP), and brain natriuretic peptide (BNP). α1D Ca channel is exclusively expressed in atria, and has been shown to play a key role in the pathogenesis of atrial fibrillation. Recent data have shown that the small conductance calcium-activated potassium channel, SK4 is also atrial specific and also contributes prominently to the secretion of ANP and BNP...
January 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27881783/multivariate-brain-prediction-of-heart-rate-and-skin-conductance-responses-to-social-threat
#18
Hedwig Eisenbarth, Luke J Chang, Tor D Wager
: Psychosocial stressors induce autonomic nervous system (ANS) responses in multiple body systems that are linked to health risks. Much work has focused on the common effects of stress, but ANS responses in different body systems are dissociable and may result from distinct patterns of cortical-subcortical interactions. Here, we used machine learning to develop multivariate patterns of fMRI activity predictive of heart rate (HR) and skin conductance level (SCL) responses during social threat in humans (N = 18)...
November 23, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27871939/cell-cell-communication-mediated-by-the-car-subgroup-of-immunoglobulin-cell-adhesion-molecules-in-health-and-disease
#19
REVIEW
Claudia Matthäus, Hanna Langhorst, Laura Schütz, René Jüttner, Fritz G Rathjen
The immunoglobulin superfamily represents a diverse set of cell-cell contact proteins and includes well-studied members such as NCAM1, DSCAM, L1 or the contactins which are strongly expressed in the nervous system. In this review we put our focus on the biological function of a less understood subgroup of Ig-like proteins composed of CAR (coxsackievirus and adenovirus receptor), CLMP (CAR-like membrane protein) and BT-IgSF (brain and testis specific immunoglobulin superfamily). The CAR-related proteins are type I transmembrane proteins containing an N-terminal variable (V-type) and a membrane proximal constant (C2-type) Ig domain in their extracellular region which are implicated in homotypic adhesion...
November 18, 2016: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/27870441/sexual-divergence-in-activity-dependent-neuroprotective-protein-impacting-autism-schizophrenia-and-alzheimer-s-disease
#20
REVIEW
Illana Gozes
Discovered in our laboratory, activity-dependent neuroprotective protein (ADNP) interacts with key regulatory proteins, including the chromatin remodeling complex SWI/SNF, proteins associated with RNA splicing, RNA translation, microtubule dynamics, and autophagy. ADNP regulates > 400 genes during mouse embryonic development and is essential for neural tube closure. ADNP key functions extend from mice to men, with mutations causing ADNP-related ID/autism syndrome, also known as the Helsmoortel-Van der Aa syndrome...
January 2, 2017: Journal of Neuroscience Research
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