keyword
MENU ▼
Read by QxMD icon Read
search

Critical Rest

keyword
https://www.readbyqxmd.com/read/29151003/lung-ultrasound-in-the-critically-ill-luci-a-translational-discipline
#1
Daniel A Lichtenstein, Manu L N G Malbrain
In the early days of ultrasound, it was not a translational discipline. The heart was claimed by cardiologists, with others, such as gynaecologists, urologists and vascular surgeons claiming their part while the rest was given to radiologists. Only recently, ultrasound transgressed and crossed the usual borders between the different disciplines, such as emergency and critical care medicine. The advent of portable machines in the early 1980s, allowed the critical care physician to perform bedside ultrasound, and the development of whole body critical care ultrasound (CCUS) was born...
November 18, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29150838/gi-530159-a-novel-selective-mechano-sensitive-k2p-channel-opener-reduces-rat-dorsal-root-ganglion-drg-neuron-excitability
#2
Alexandre J C Loucif, Pierre-Philippe Saintot, Jia Liu, Brett M Antonio, Shannon G Zellmer, Katrina Yoger, Emma L Veale, Anna Wilbrey, Kiyoyuki Omoto, Lishuang Cao, Alex Gutteridge, Neil A Castle, Edward B Stevens, Alistair Mathie
BACKGROUND AND PURPOSE: TREK two pore domain potassium channels play a critical role in regulating the excitability of somatosensory nociceptive neurons and are important mediators of pain perception. An understanding of the roles of TREK channels in pain perception and, indeed, in other pathophysiological conditions, has been severely hampered by the lack of potent and/or selective activators and inhibitors. In this study we describe a new, selective opener of TREK channels, GI-530159 (4,4'-(Hexafluoroisopropylidene)bis(p-phenyleneoxy)dianiline)...
November 18, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/29149363/indications-for-extracorporeal-support-why-do-we-need-the-results-of-the-eolia-trial
#3
REVIEW
A Combes, N Bréchot, C-E Luyt, M Schmidt
Acute respiratory distress syndrome (ARDS) is a severe lung disease, with an associated mortality rate exceeding 60% for the most severe forms of the disease. In these situations, establishing an extracorporeal circuit, combining a centrifugal pump and a membrane oxygenator (extra-corporeal membrane oxygenation, ECMO), can ensure total pulmonary assistance and allow the lungs to rest under ultraprotective mechanical ventilation. Unfortunately, former trials of ECMO in ARDS were negative or highly criticized due to many technical and methodological shortcomings...
November 17, 2017: Medizinische Klinik, Intensivmedizin und Notfallmedizin
https://www.readbyqxmd.com/read/29147931/horses-for-courses-moving-india-towards-universal-health-coverage-through-targeted-policy-design
#4
Dayashankar Maurya, Altaf Virani, S Rajasulochana
The debate on how India's health system should move towards universal health coverage was (meant to be) put to rest by the recent National Health Policy 2017. However, the new policy is silent about tackling bottlenecks mentioned in the said policy proposal. It aims to provide universal access to free primary care by strengthening the public system, and to secondary and tertiary care through strategic purchasing from the private sector, to overcome deficiencies in public provisioning in the short run. Yet, in doing so, it ignores critical factors needed to replicate successful models of public healthcare delivery from certain states that it hopes to emulate...
November 16, 2017: Applied Health Economics and Health Policy
https://www.readbyqxmd.com/read/29143411/spontaneous-neural-activity-differences-in-posttraumatic-stress-disorder-a-quantitative-resting-state-meta-analysis-and-fmri-validation
#5
Seth G Disner, Craig A Marquardt, Bryon A Mueller, Philip C Burton, Scott R Sponheim
Identifying the pathophysiology of posttraumatic stress disorder (PTSD) is a critical step toward reducing its debilitating impact. Spontaneous neural activity, measured at rest using various neuroimaging techniques (e.g., regional homogeneity [ReHo], amplitude of low frequency fluctuations [ALFF]), can provide insight about baseline neurobiological factors influencing sensory, cognitive, or behavioral processes associated with PTSD. The present study used activation likelihood estimation (ALE) to conduct the largest-to-date quantitative meta-analysis of spontaneous neural activity in PTSD, including 457 PTSD cases, 292 trauma-exposed controls (TECs), and 293 non-traumatized controls (NTCs) across 22 published studies...
November 15, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29143309/a-comparison-of-paternity-data-and-relative-testes-size-as-measures-of-level-of-sperm-competition-in-the-hominoidea
#6
R Robin Baker, Todd K Shackelford
OBJECTIVES: The phrase "level of sperm competition" is used only vaguely in the primate literature. There is also little distinction between the important elements of frequency and intensity of sperm competition, largely because the two current forms of measurement (socio-sexual system and relative testes size) are both proxies which allow neither precision nor fine distinctions. Both measures have critics, socio-sexual system in particular being branded subjective, misleading, and changeable...
November 16, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29142118/climate-and-foraging-mode-explain-interspecific-variation-in-snake-metabolic-rates
#7
Andréaz Dupoué, François Brischoux, Olivier Lourdais
The energy cost of self-maintenance is a critical facet of life-history strategies. Clarifying the determinant of interspecific variation in metabolic rate (MR) at rest is important to understand and predict ecological patterns such as species distributions or responses to climatic changes. We examined variation of MR in snakes, a group characterized by a remarkable diversity of activity rates and a wide distribution. We collated previously published MR data (n = 491 observations) measured in 90 snake species at different trial temperatures...
November 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29141973/energy-metabolism-profile-in-individuals-with-prader-willi-syndrome-and-implications-for-clinical-management-a-systematic-review
#8
REVIEW
Maha Alsaif, Sarah A Elliot, Michelle L MacKenzie, Carla M Prado, Catherine J Field, Andrea M Haqq
Prader-Willi syndrome (PWS) is a rare genetic disorder associated with excessive weight gain. Hyperphagia associated with PWS may result in higher energy intake, but alterations in energy expenditure may also contribute to energy imbalance. The purpose of this critical literature review is to determine the presence of alterations in energy expenditure in individuals with PWS. Ten studies that measured total energy expenditure (TEE), resting energy expenditure (REE), sleep energy expenditure (SEE), activity energy expenditure (AEE), and diet induced thermogenesis (DIT) were included in this review...
November 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/29140600/vegetation-cover-another-dominant-factor-in-determining-global-water-resources-in-forested-regions
#9
Xiaohua Wei, Qiang Li, Mingfang Zhang, Krysta Giles-Hansen, Wenfei Liu, Houbao Fan, Yi Wang, Guoyi Zhou, Shilong Piao, Shirong Liu
Forested catchments provide critically important water resources. Due to dramatic global forest change over the past decades, the importance of including forest or vegetation change in the assessment of water resources under climate change has been highly recognized by Intergovernmental Panel on Climate Change (IPCC); however, this importance has not yet been examined quantitatively across the globe. Here, we used four remote sensing-based indices to represent changes in vegetation cover in forest dominated regions, and then applied them to widely-used models: the Fuh model and the Choudhury-Yang model to assess relative contributions of vegetation and climate changes to annual runoff variations from 2000 to 2011 in forested landscape (forest coverage > 30%) across the globe...
November 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29138087/beyond-modularity-fine-scale-mechanisms-and-rules-for-brain-network-reconfiguration
#10
Ankit N Khambhati, Marcelo G Mattar, Nicholas F Wymbs, Scott T Grafton, Danielle S Bassett
The human brain is in constant flux, as distinct areas engage in transient communication to support basic behaviors as well as complex cognition. The collection of interactions between cortical and subcortical areas forms a functional brain network whose topology evolves with time. Despite the nontrivial dynamics that are germane to this networked system, experimental evidence demonstrates that functional interactions organize into putative brain systems that facilitate different facets of cognitive computation...
November 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/29137144/impact-of-labile-zinc-on-heart-function-from-physiology-to-pathophysiology
#11
REVIEW
Belma Turan, Erkan Tuncay
Zinc plays an important role in biological systems as bound and histochemically reactive labile Zn(2+). Although Zn(2+) concentration is in the nM range in cardiomyocytes at rest and increases dramatically under stimulation, very little is known about precise mechanisms controlling the intracellular distribution of Zn(2+) and its variations during cardiac function. Recent studies are focused on molecular and cellular aspects of labile Zn(2+) and its homeostasis in mammalian cells and growing evidence clarified the molecular mechanisms underlying Zn(2+)-diverse functions in the heart, leading to the discovery of novel physiological functions of labile Zn(2+) in parallel to the discovery of subcellular localization of Zn(2+)-transporters in cardiomyocytes...
November 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29134717/superior-colliculus-resting-state-networks-in-post-traumatic-stress-disorder-and-its-dissociative-subtype
#12
Isadora Olivé, Maria Densmore, Sherain Harricharan, Jean Théberge, Margaret C McKinnon, Ruth Lanius
OBJECTIVES: The innate alarm system (IAS) models the neurocircuitry involved in threat processing in posttraumatic stress disorder (PTSD). Here, we investigate a primary subcortical structure of the IAS model, the superior colliculus (SC), where the SC is thought to contribute to the mechanisms underlying threat-detection in PTSD. Critically, the functional connectivity between the SC and other nodes of the IAS remains unexplored. EXPERIMENTAL DESIGN: We conducted a resting-state fMRI study to investigate the functional architecture of the IAS, focusing on connectivity of the SC in PTSD (n = 67), its dissociative subtype (n = 41), and healthy controls (n = 50) using region-of-interest seed-based analysis...
November 13, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29128524/numerical-study-of-the-airflow-structures-in-an-idealized-mouth-throat-under-light-and-heavy-breathing-intensities-using-large-eddy-simulation
#13
Xinguang Cui, Wenwang Wu, Eva Gutheil
An excellent understanding of the airflow structures is critical to enhance the efficiency of drug delivery via the human oral airway. The present paper investigates the characteristics of both steady and unsteady airflow structures in an idealized mouth-throat using large eddy simulation (LES). Representative inhalation flow rates of 15L/min at rest and 60L/min in exercise are considered. The study shows that there are more secondary vortices in the pharynx and the laryngeal jet is much longer and more concave in the steady flow field at 15L/min compared to the higher inspiration rate, which decreases the possibility of drug impinging on the wall...
November 8, 2017: Respiratory Physiology & Neurobiology
https://www.readbyqxmd.com/read/29128351/drosophila-models-of-fop-provide-mechanistic-insight
#14
REVIEW
Viet Le, Edward Anderson, Takuya Akiyama, Kristi A Wharton
Fibrodysplasia ossificans progressiva (FOP) is a rare bone disease characterized by episodic events of heterotopic ossification (HO). All cases of FOP have been attributed to mutations in the ACVR1 gene that render the encoded BMP type I ALK2 receptor hypersensitive, resulting in the activation of BMP signaling, at inappropriate times in inappropriate locations. The episodic or sporadic nature of HO associated with FOP rests with the occurrence of specific 'triggers' that push the hypersensitive ALK2-FOP receptor into full signaling mode...
November 8, 2017: Bone
https://www.readbyqxmd.com/read/29122558/optimal-housing-temperatures-for-mice-to-mimic-the-thermal-environment-of-humans-an%C3%A2-experimental-study
#15
Alexander W Fischer, Barbara Cannon, Jan Nedergaard
OBJECTIVES: The laboratory mouse is presently the most common model for examining mechanisms of human physiology and disease. Housing temperatures can have a large impact on the outcome of such experiments and on their translatability to the human situation. Humans usually create for themselves a thermoneutral environment without cold stress, while laboratory mice under standard conditions (≈20° C) are under constant cold stress. In a well-cited, theoretical paper by Speakman and Keijer in Molecular Metabolism, it was argued that housing mice under close to standard conditions is the optimal way of modeling the human metabolic situation...
October 31, 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29122368/the-parietal-opercular-auditory-sensorimotor-network-in-musicians-a-resting-state-fmri-study
#16
Shoji Tanaka, Eiji Kirino
Auditory-sensorimotor coupling is critical for musical performance, during which auditory and somatosensory feedback signals are used to ensure desired outputs. Previous studies reported opercular activation in subjects performing or listening to music. A functional connectivity analysis suggested the parietal operculum (PO) as a connector hub that links auditory, somatosensory, and motor cortical areas. We therefore examined whether this PO network differs between musicians and non-musicians. We analyzed resting-state PO functional connectivity with Heschl's gyrus (HG), the planum temporale (PT), the precentral gyrus (preCG), and the postcentral gyrus (postCG) in 35 musicians and 35 non-musicians...
November 6, 2017: Brain and Cognition
https://www.readbyqxmd.com/read/29121332/frontostriatal-and-dopamine-markers-of-individual-differences-in-reinforcement-learning-a-multi-modal-investigation
#17
Roselinde H Kaiser, Michael T Treadway, Dustin W Wooten, Poornima Kumar, Franziska Goer, Laura Murray, Miranda Beltzer, Pia Pechtel, Alexis Whitton, Andrew L Cohen, Nathaniel M Alpert, Georges El Fakhri, Marc D Normandin, Diego A Pizzagalli
Prior studies have shown that dopamine (DA) functioning in frontostriatal circuits supports reinforcement learning (RL), as phasic DA activity in ventral striatum signals unexpected reward and may drive coordinated activity of striatal and orbitofrontal regions that support updating of action plans. However, the nature of DA functioning in RL is complex, in particular regarding the role of DA clearance in RL behavior. Here, in a multi-modal neuroimaging study with healthy adults, we took an individual differences approach to the examination of RL behavior and DA clearance mechanisms in frontostriatal learning networks...
October 31, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/29119262/role-of-cardiac-pet-in-clinical-practice
#18
REVIEW
Brian M Salata, Parmanand Singh
Early identification of atherosclerosis and at-risk lesions plays a critical role in reducing the burden of cardiovascular disease. While invasive coronary angiography serves as the gold standard for diagnosing coronary artery disease, non-invasive imaging techniques provide visualization of both anatomical and functional atherosclerotic processes prior to clinical presentation. The development of cardiac positron emission tomography (PET) has greatly enhanced our capability to diagnose and treat patients with early stages of atherosclerosis...
November 9, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29116599/the-class-a-gpcr-dopamine-d2-receptor-forms-transient-dimers-stabilized-by-agonists-detection-by-single-molecule-tracking
#19
Rinshi S Kasai, Shuichi V Ito, Ryo M Awane, Takahiro K Fujiwara, Akihiro Kusumi
Whether class-A G-protein coupled receptors (GPCRs) exist and work as monomers or dimers has drawn extensive attention. A class-A GPCR dopamine D2 receptor (D2R) is involved in many physiological and pathological processes and diseases, indicating its critical role in proper functioning of neuronal circuits. In particular, D2R homodimers might play key roles in schizophrenia development and amphetamine-induced psychosis. Here, using single-molecule imaging, we directly tracked single D2R molecules in the plasma membrane at a physiological temperature of 37 °C, and unequivocally determined that D2R forms transient dimers with a lifetime of 68 ms in its resting state...
November 7, 2017: Cell Biochemistry and Biophysics
https://www.readbyqxmd.com/read/29116174/activation-of-g-protein-gated-inwardly-rectifying-potassium-kir3-girk-channels-rescues-hippocampal-functions-in-a-mouse-model-of-early-amyloid-%C3%AE-pathology
#20
Irene Sánchez-Rodríguez, Sara Temprano-Carazo, Alberto Nájera, Souhail Djebari, Javier Yajeya, Agnès Gruart, José M Delgado-García, Lydia Jiménez-Díaz, Juan D Navarro-López
The hippocampus plays a critical role in learning and memory. Its correct performance relies on excitatory/inhibitory synaptic transmission balance. In early stages of Alzheimer's disease (AD), neuronal hyperexcitability leads to network dysfunction observed in cortical regions such as the hippocampus. G-protein-gated potassium (GirK) channels induce neurons to hyperpolarize, contribute to the resting membrane potential and could compensate any excesses of excitation. Here, we have studied the relationship between GirK channels and hippocampal function in a mouse model of early AD pathology...
November 7, 2017: Scientific Reports
keyword
keyword
45102
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"