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Heart physiology

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https://www.readbyqxmd.com/read/29168250/the-effect-of-skin-to-skin-care-on-cerebral-oxygenation-during-nasogastric-feeding-of-preterm-infants
#1
A Marulli, C O F Kamlin, J A Dawson, S M Donath, P G Davis, L Lorenz
AIM: To describe cerebral oxygenation during gavage feeding of preterm infants during incubator and skin-to-skin care. METHODS: Further analysis of data from two crossover studies comparing cerebral oxygenation, heart rate and oxygen saturation during skin-to-skin care with incubator care. Data were analysed in three epochs; 10 mins pre-feed, during-feed, and 10 mins post-feed. Measurements from infants fed during incubator care were compared with those obtained during skin-to-skin care...
November 23, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/29167119/revisiting-the-physiological-effects-of-exercise-training-on-autonomic-regulation-and-chemoreflex-control-in-heart-failure-does-ejection-fraction-matter
#2
David Cristobal Andrade, Alexis Arce-Alvarez, Camilo Toledo, Hugo S Diaz, Claudia Lucero, Rodrigo Quintanilla, Harold D Schultz, Noah J Marcus, Markus Amman, Rodrigo Del Rio
Heart failure (HF) is a global public health problem that, independent of its etiology (reduced (HFrEF) or preserved ejection fraction (HFpEF)), is characterized by functional impairments of cardiac function, chemoreflex hypersensitivity, baroreflex sensitivity (BRS) impairment, and abnormal autonomic regulation, all of which contribute to increased morbidity and mortality. Exercise training (ExT) has been identified as a nonpharmacological therapy capable of restoring normal autonomic function and improving survival in patients with HFrEF...
November 22, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29166265/selection-of-reference-genes-for-quantitative-real-time-rt-pcr-on-gene-expression-in-golden-pompano-trachinotus-ovatus
#3
X J Chen, X Q Zhang, S Huang, Z J Cao, Q W Qin, W T Hu, Y Sun, Y C Zhou
Golden pompano (Trachinotus ovatus) is an important economically fish species. In this study, with an aim to identify reliable reference genes for quantitative real-time PCR (qRT-PCR) in golden pompano, we evaluated the expression stability of eight housekeeping genes in the presence and absence of poly I:C stimulation in eight tissues. The PCR data was analyzed by geNorm and NormFinder algorithms. The results showed that the expression of all the examined genes exhibited tissue-dependent variations. When under normal physiological condition, geNorm and NormFinder identified B2M and 18S as suitable genes...
September 26, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/29166194/the-effects-of-music-therapy-on-the-physiological-response-of-asthmatic-children-receiving-inhalation-therapy
#4
Riau Roslita, Nani Nurhaeni, Dessie Wanda
The clinical manifestation of asthma in children can interfere with their daily activities. Music therapy may become one of the alternative approaches to making children feel comfortable during inhalation therapy. The aim of the study was to identify the effects of music therapy on the physiological response of asthmatic preschool and school-age children receiving inhalation therapy. This study used a quasi-experimental, nonequivalent control group with a pre-test-post-test design. The 44 respondents consisted of preschool and school-age children assigned to intervention and control groups...
2017: Compr Child Adolesc Nurs
https://www.readbyqxmd.com/read/29165757/clinical-effects-of-ascending-colon-patching-ileorectal-heart-shaped-anastomosis-on-total-colonic-aganglionosis
#5
S-X Li, H-W Zhang, H Cao, H-X Zou, Y-Y Yin, F Sui, X Zhang
OBJECTIVE: We studied the clinical effects of ascending colon patching ileorectal heart-shaped anastomosis in treating total colonic aganglionosis. PATIENTS AND METHODS: From June 2006 to June 2013, 15 children with severe abdominal distension, low small intestine obstruction and intestinal perforation in the neonatal period, were enrolled in this study. In phase I, patients received emergency terminal ileum stoma plus multi-site colonic biopsy and 6 to 12 months later, ascending colon patching ileorectal heart-shaped anastomosis was conducted in phase II...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29165006/effect-of-non-steroidal-anti-inflammatory-drugs-on-postoperative-respiratory-and-heart-rate-in-cats-subjected-to-ovariohysterectomy
#6
Odd V Höglund, Barbara Dyall, Victoria Gräsman, Anna Edner, Ulf Olsson, Katja Höglund
Objectives The use of physiological parameters such as respiratory rate and heart rate to assess pain has long been discussed. The aim of the study was to compare postoperative respiratory rate and heart rate in cats subjected to flank ovariohysterectomy treated with a preoperative non-steroidal anti-inflammatory drug (NSAID) or no NSAID, and determine whether these parameters are suitable for postoperative pain assessment in cats. We hypothesised that cats without an NSAID would experience more postoperative pain, which may increase heart rate and respiratory rate...
November 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29164443/child-autism-spectrum-disorder-traits-and-parenting-stress-the-utility-of-using-a-physiological-measure-of-parental-stress
#7
Reina S Factor, Deanna M Swain, Angela Scarpa
Caregivers of children with autism spectrum disorder (ASD) report greater stress due to unique parenting demands (e.g.; Estes et al. in Brain Dev 35(2):133-138, 2013). Stress is often studied through self-report and has not been extensively studied using physiological measures. This study compared parenting stress in mothers of children with and without ASD traits. Twenty-seven mother-child dyads participated in an interaction task while measuring mother's heart rate variability (HRV) and mothers self-reported stress levels...
November 21, 2017: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/29163642/potential-role-of-exosomes-in-mending-a-broken-heart-nanoshuttles-propelling-future-clinical-therapeutics-forward
#8
REVIEW
Julie A Dougherty, Muhamad Mergaye, Naresh Kumar, Chun-An Chen, Mark G Angelos, Mahmood Khan
Stem cell transplantation therapy is a promising adjunct for regenerating damaged heart tissue; however, only modest improvements in cardiac function have been observed due to poor survival of transplanted cells in the ischemic heart. Therefore, there remains an unmet need for therapies that can aid in attenuating cardiac damage. Recent studies have demonstrated that exosomes released by stem cells could serve as a potential cell-free therapeutic for cardiac repair. These exosomes/nanoshuttles, once thought to be merely a method of waste disposal, have been shown to play a crucial role in physiological functions including short- and long-distance intercellular communication...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29163357/a-journey-through-the-gonadotropin-inhibitory-hormone-system-of-fish
#9
REVIEW
José A Muñoz-Cueto, José A Paullada-Salmerón, María Aliaga-Guerrero, Mairi E Cowan, Ishwar S Parhar, Takayoshi Ubuka
Gonadotropin-inhibitory hormone (GnIH) is a hypothalamic neuropeptide that belongs to the RFamide peptide family and was first identified in the quail brain. From the discovery of avian GnIH, orthologous GnIH peptides have been reported in a variety of vertebrates, including mammals, amphibians, teleosts and agnathans, but also in protochordates. It has been clearly established that GnIH suppresses reproduction in avian and mammalian species through its inhibitory actions on brain GnRH and pituitary gonadotropins...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29163312/a-new-standardized-emotional-film-database-for-asian-culture
#10
Yaling Deng, Meng Yang, Renlai Zhou
Researchers interested in emotions have endeavored to elicit emotional responses in the laboratory and have determined that films were one of the most effective ways to elicit emotions. The present study presented the development of a new standardized emotional film database for Asian culture. There were eight kinds of emotion: fear, disgust, anger, sadness, neutrality, surprise, amusement, and pleasure. Each kind included eight film clips, and a total of 64 emotional films were viewed by 110 participants. We analyzed both the subjective experience (valence, arousal, motivation, and dominance) and physiological response (heart rate and respiration rate) to the presentation of each film...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29163202/comparison-of-peak-oxygen-uptake-and-test-retest-reliability-of-physiological-parameters-between-closed-end-and-incremental-upper-body-poling-tests
#11
Julia K Baumgart, Knut Skovereng, Øyvind Sandbakk
Objective: To compare peak oxygen uptake (VO2peak) and the test-retest reliability of physiological parameters between a 1-min and a 3-min closed-end and an incremental open-end upper-body poling test. Methods: On two separate test days, 24 healthy, upper-body trained men (age: 28.3 ± 9.3 years, body mass: 77.4 ± 8.9 kg, height: 182 ± 7 cm) performed a 1-min, a 3-min and an incremental test to volitional exhaustion in the same random order. Respiratory parameters, heart rate (HR), blood lactate concentration (BLa), rating of perceived exertion (RPE), and power output were measured...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29163016/session-rpe-method-for-training-load-monitoring-validity-ecological-usefulness-and-influencing-factors
#12
REVIEW
Monoem Haddad, Georgios Stylianides, Leo Djaoui, Alexandre Dellal, Karim Chamari
Purpose: The aim of this review is to (1) retrieve all data validating the Session-rating of perceived exertion (RPE)-method using various criteria, (2) highlight the rationale of this method and its ecological usefulness, and (3) describe factors that can alter RPE and users of this method should take into consideration. Method: Search engines such as SPORTDiscus, PubMed, and Google Scholar databases in the English language between 2001 and 2016 were consulted for the validity and usefulness of the session-RPE method...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29162941/aerobic-performance-in-tinamous-is-limited-by-their-small-heart-a-novel-hypothesis-in-the-evolution-of-avian-flight
#13
Jordi Altimiras, Isa Lindgren, Lina María Giraldo-Deck, Alberto Matthei, Álvaro Garitano-Zavala
Some biomechanical studies from fossil specimens suggest that sustained flapping flight of birds could have appeared in their Mesozoic ancestors. We challenge this idea because a suitable musculoskeletal anatomy is not the only requirement for sustained flapping flight. We propose the "heart to fly" hypothesis that states that sustained flapping flight in modern birds required an enlargement of the heart for the aerobic performance of the flight muscles and test it experimentally by studying tinamous, the living birds with the smallest hearts...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29162504/checks-and-balances-between-autophagy-and-the-inflammasomes-during-infection
#14
REVIEW
Stephanie Seveau, Joanne Turner, Mikhail A Gavrilin, Jordi B Torrelles, Luanne Hall-Stoodley, Jacob Yount, Amal O Amer
Autophagy and inflammasome complex assembly are physiological processes that control homeostasis, inflammation, and immunity. Autophagy is a ubiquitous pathway that degrades cytosolic macromolecules or organelles, as well as intracellular pathogens. Inflammasomes are multi-protein complexes that assemble in the cytosol of cells upon detection of pathogen- or danger-associated molecular patterns. A critical outcome of inflammasome assembly is the activation of the serine protease caspase-1, which activates the pro-inflammatory cytokine precursors pro-IL-1β and pro-IL-18...
November 18, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29161351/echoes-of-affective-stimulation-in-brain-connectivity-networks
#15
Viola Borchardt, Yan Fan, Marie Dietz, Ana Lucia Herrera Melendez, Malek Bajbouj, Matti Gärtner, Meng Li, Martin Walter, Simone Grimm
Affective experience has effects on subjective feelings, physiological indices, entails immediate activity changes in the brain, and even influences brain networks in a protracted manner. However, it is still unclear, how the functional connectivity (FC) interplay between major intrinsic connectivity networks upon affective stimulation depends on affective valence, and whether this is specific for affective experience, i.e., can be distinguished from cognitive task execution. Our study included fMRI scans during and after affective stimulation with sad and neutral movies and a working memory task complemented with measures of cardiovascular activity and mood...
November 17, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29160925/effects-of-swaddled-and-traditional-tub-bathing-methods-on-crying-and-physiological-responses-of-newborns
#16
Sinem Yalnızoğlu Çaka, Duygu Gözen
PURPOSE: The purpose of this study was to examine the effects of two bathing methods on crying duration and physiological measurements of newborns. DESIGN AND METHODS: A randomized trial design was used in this study. The sample consisted of newborns (n = 80) who were admitted to neonatal intensive care unit of a university hospital located in a large city. The groups were determined as swaddled bathing (SB) (n = 40) and traditional tub bathing (TTB) (n = 40) by using random number table...
November 21, 2017: Journal for Specialists in Pediatric Nursing: JSPN
https://www.readbyqxmd.com/read/29160828/parent-cardiac-response-in-the-context-of-their-child-s-completion-of-the-cold-pressor-task-a-pilot-study
#17
Kaytlin Constantin, Rachel L Moline, C Meghan McMurtry, Heidi N Bailey
Parents' ability to regulate their emotions is essential to providing supportive caregiving behaviours when their child is in pain. Extant research focuses on parent self-reported experience or observable behavioural responses. Physiological responding, such as heart rate (HR) and heart rate variability (HRV), is critical to the experience and regulation of emotions and provides a complementary perspective on parent experience; yet, it is scarcely assessed. This pilot study examined parent (n = 25) cardiac response (HR, HRV) at rest (neutral film clip), immediately before the cold pressor task (pre-CPT), and following the CPT (post-CPT)...
November 21, 2017: Children
https://www.readbyqxmd.com/read/29160176/impact-of-bedding-volume-on-physiological-and-behavioural-parameters-in-laboratory-mice
#18
Jennifer Freymann, Ping-Ping Tsai, Helge D Stelzer, Reinhard Mischke, Hansjoachim Hackbarth
The standard housing temperature in animal facilities is substantially below the lower critical temperature of mice. This does not only endanger animal welfare, it can also jeopardize scientific research as cold stress has a major impact on mouse physiology. There is some evidence that deep bedding, comparable to nesting material, can help mice to reduce heat loss. Whenever changes are applied to the cage environment, the potential impact on experimental results, including variation, needs to be assessed. An increased variation can result in a conflict between reduction and refinement, when more animals are needed for significance due to the housing design...
December 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29160002/a-randomized-double-blind-trial-of-needle-free-injected-lidocaine-versus-topical-anesthesia-for-infant-lumbar-puncture
#19
Ryan Caltagirone, Vidya R Raghavan, Kathleen Adelgais, Genie E Roosevelt
OBJECTIVES: Lumbar punctures (LPs) are commonly performed in febrile infants to evaluate for meningitis, and local anesthesia increases the likelihood of LP success. Traditional methods of local anesthesia require injection which may be painful or topical application which is not effective immediately. Recent advances in needle-free jet injection may offer a rapid alternative to these modalities. We compared a needle-free jet-injection system (J-Tip(™) ) with 1% buffered lidocaine to topical anesthetic (TA) cream for local anesthesia in infant LPs...
November 20, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29159682/physiological-and-biomechanical-responses-of-highly-trained-distance-runners-to-lower-body-positive-pressure-treadmill-running
#20
Kyle R Barnes, Jessica N Janecke
BACKGROUND: As a way to train at faster running speeds, add training volume, prevent injury, or rehabilitate after an injury, lower-body positive pressure treadmills (LBPPT) have become increasingly commonplace among athletes. However, there are conflicting evidence and a paucity of data describing the physiological and biomechanical responses to LBPPT running in highly trained or elite caliber runners at the running speeds they habitually train at, which are considerably faster than those of recreational runners...
November 21, 2017: Sports Medicine—Open
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