keyword
MENU ▼
Read by QxMD icon Read
search

Functional rise

keyword
https://www.readbyqxmd.com/read/27906520/construction-of-the-human-forebrain
#1
REVIEW
Terry L Jernigan, Joan Stiles
The adult human brain is arguably the most complex of biological systems. It contains 86 billion neurons (the information processing cells of the brain) and many more support cells. The neurons, with the assistance of the support cells, form trillions of connections creating complex, interconnected neural networks that support all human thought, feeling, and action. A challenge for modern neuroscience is to provide a model that accounts for this exquisitely complex and dynamic system. One fundamental part of this model is an account of how the human brain develops...
December 1, 2016: Wiley Interdisciplinary Reviews. Cognitive Science
https://www.readbyqxmd.com/read/27906037/integrated-therapy-for-hiv-and-cryptococcosis
#2
REVIEW
Sirawat Srichatrapimuk, Somnuek Sungkanuparph
Cryptococcosis has been one of the most common opportunistic infections and causes of mortality among HIV-infected patients, especially in resource-limited countries. Cryptococcal meningitis is the most common form of cryptococcosis. Laboratory diagnosis of cryptococcosis includes direct microscopic examination, isolation of Cryptococcus from a clinical specimen, and detection of cryptococcal antigen. Without appropriate treatment, cryptococcosis is fatal. Early diagnosis and treatment is the key to treatment success...
November 29, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27904930/micrornas-in-bone-diseases
#3
REVIEW
L Gennari, S Bianciardi, D Merlotti
MicroRNAs are small, noncoding single-stranded RNAs that have emerged as important posttranscriptional regulators of gene expression, with an essential role in vertebrate development and different biological processes. This review highlights the recent advances in the function of miRNAs and their roles in bone remodeling and bone diseases. MicroRNAs (miRNAs) are a class of small (∼22 nt), noncoding single-stranded RNAs that have emerged as important posttranscriptional regulators of gene expression. They are essential for vertebrate development and play critical roles in different biological processes related to cell differentiation, activity, metabolism, and apoptosis...
November 30, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27903734/deviations-from-critical-dynamics-in-interictal-epileptiform-activity
#4
Oshrit Arviv, Mordekhay Medvedovsky, Liron Sheintuch, Abraham Goldstein, Oren Shriki
: The framework of criticality provides a unifying perspective on neuronal dynamics from in vitro cortical cultures to functioning human brains. Recent findings suggest that a healthy cortex displays critical dynamics, giving rise to scale-free spatiotemporal cascades of activity, termed neuronal avalanches. Pharmacological manipulations of the excitation-inhibition balance (EIB) in cortical cultures were previously shown to result in deviations from criticality and from the power law scaling of avalanche size distribution...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27903719/the-segregation-and-integration-of-distinct-brain-networks-and-their-relationship-to-cognition
#5
Jessica R Cohen, Mark D'Esposito
: A critical feature of the human brain that gives rise to complex cognition is its ability to reconfigure its network structure dynamically and adaptively in response to the environment. Existing research probing task-related reconfiguration of brain network structure has concluded that, although there are many similarities in network structure during an intrinsic, resting state and during the performance of a variety of cognitive tasks, there are meaningful differences as well. In this study, we related intrinsic, resting state network organization to reconfigured network organization during the performance of two tasks: a sequence tapping task, which is thought to probe motor execution and likely engages a single brain network, and an n-back task, which is thought to probe working memory and likely requires coordination across multiple networks...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27903008/brightness-in-human-rod-vision-depends-on-slow-neural-adaptation-to-quantum-statistics-of-light
#6
Michael E Rudd, Fred Rieke
In human rod-mediated vision, threshold for small, brief flashes rises in proportion to the square root of adapting luminance at all but the lowest and highest adapting intensities. A classical signal detection theory from Rose (1942, 1948) and de Vries (1943) attributed this rise to the perceptual masking of weak flashes by Poisson fluctuations in photon absorptions from the adapting field. However, previous work by Brown and Rudd (1998) demonstrated that the square-root law also holds for suprathreshold brightness judgments, a finding that supports an alternative explanation of the square-root sensitivity changes as a consequence of physiological adaptation (i...
November 1, 2016: Journal of Vision
https://www.readbyqxmd.com/read/27902530/cardiac-troponin-release-is-associated-with-biomarkers-of-inflammation-and-ventricular-dilatation-during-critical-illness
#7
Marlies Ostermann, Salma Ayis, Emma Tuddenham, Jessica Lo, Katie Lei, John Smith, Barnaby Sanderson, Carl Moran, Paul Collinson, Janet Peacock, Andrew Rhodes, David Treacher
INTRODUCTION: Troponin release is common during critical illness. We hypothesized that there was an association between cardiac troponin T (cTnT) and biomarkers of systemic inflammation and ventricular dilatation. METHODS: In an observational prospective cohort study, we enrolled consecutive adult patients admitted for non-cardiac reasons to the Intensive Care Unit (ICU) in 2 tertiary care centers. We measured cTnT, C-reactive protein (CRP), Interleukin-6 (IL-6), procalcitonin (PCT) and N-terminal pro brain natriuretic peptide (NT-proBNP) daily in the first week, and on alternate days in the second week...
November 29, 2016: Shock
https://www.readbyqxmd.com/read/27901162/molecular-dynamics-simulations-and-kelvin-probe-force-microscopy-to-study-of-cholesterol-induced-electrostatic-nanodomains-in-complex-lipid-mixtures
#8
E Drolle, W F D Bennett, K Hammond, E Lyman, M Karttunen, Z Leonenko
The molecular arrangement of lipids and proteins within biomembranes and monolayers gives rise to complex film morphologies as well as regions of distinct electrical surface potential, topographical and electrostatic nanoscale domains. To probe these nanodomains in soft matter is a challenging task both experimentally and theoretically. This work addresses the effects of cholesterol, lipid composition, lipid charge, and lipid phase on the monolayer structure and the electrical surface potential distribution...
November 30, 2016: Soft Matter
https://www.readbyqxmd.com/read/27899482/transient-receptor-potential-canonical-3-trpc3-channels-are-required-for-hypothalamic-glucose-detection-and-energy-homeostasis
#9
Chloé Chrétien, Claire Fenech, Fabienne Liénard, Sylvie Grall, Charlène Chevalier, Sylvie Chaudy, Xavier Brenachot, Raymond Berges, Katie Louche, Romana Stark, Emmanuelle Nédélec, Amélie Laderrière, Zane B Andrews, Alexandre Benani, Veit Flockerzi, Jean Gascuel, Jana Hartmann, Cédric Moro, Lutz Birnbaumer, Corinne Leloup, Luc Pénicaud, Xavier Fioramonti
The medio-basal hypothalamus (MBH) contains neurons capable of directly detecting metabolic signals such as glucose to control energy homeostasis. Among them, glucose-excited (GE) neurons increase their electrical activity when glucose rises. In view of previous work, we hypothesized that Transient Receptor Potential Canonical type-3 (TRPC3) channels are involved in hypothalamic glucose detection and the control of energy homeostasis.To investigate the role of TRPC3, we used constitutive and conditional TRPC3-deficient mice models...
November 29, 2016: Diabetes
https://www.readbyqxmd.com/read/27899129/a-community-based-study-on-prevalence-and-correlates-of-erectile-dysfunction-among-kinondoni-district-residents-dar-es-salaam-tanzania
#10
Pedro Pallangyo, Paulina Nicholaus, Peter Kisenge, Henry Mayala, Noel Swai, Mohamed Janabi
BACKGROUND: Globally, erectile dysfunction burden (ED) is rising appreciably and it is projected to affect about 332 million men by the year 2025. This rise is attributable to the rising incidence of conditions associated with ED including obesity, diabetes, hypertension, coronary artery disease and depression. We conducted this community-based screening to elucidate on the prevalence of ED and its associated factors among men residing in an urban community in Tanzania. METHODS: We conducted a cross-sectional community-based study and interviewed 441 men aged at least 18 years...
November 29, 2016: Reproductive Health
https://www.readbyqxmd.com/read/27898521/pathogenesis-and-heterogeneity-of-ovarian-cancer
#11
Paul T Kroeger, Ronny Drapkin
PURPOSE OF REVIEW: The most common type of ovarian cancer, high-grade serous ovarian carcinoma (HGSOC), was originally thought to develop from the ovarian surface epithelium. However, recent data suggest that the cells that undergo neoplastic transformation and give rise to the majority of HGSOC are from the fallopian tube. This development has impacted both translational research and clinical practice, revealing new opportunities for early detection, prevention, and treatment of ovarian cancer...
November 26, 2016: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27898247/challenges-for-the-maintenance-and-cryopreservation-of-multiple-isolates-of-model-microorganisms-an-example-using-the-marine-diatom-skeletonema-marinoi
#12
John G Day, Simon Tytor, Jenny Egardt, Monica Applegren, Cecilia Rad-Menéndez, Olga Chepurnova, Wim Vyverman, Anna Godhe
Modern genomic and metabolomic tools have provided the possibility of generating and interrogating large datasets that can provide answers to previously imponderable taxonomic, evolutionary, ecological, and physiological questions. However, the curatorial tools needed to provide and maintain the relevant biological resources on which new knowledge can be built have not kept pace with this meteoric rise in scientific capacity, its associated activity, or the huge increase in published science. The availability of biological material of guaranteed identity and quality in Biological Resource Centers is fundamental for scientific research, but it crucially depends on there being adequate preservation/maintenance methods that are capable of ensuring phenotypic, genotypic, and functional security of the biological material(s)...
November 29, 2016: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/27897139/influence-of-electromechanical-coupling-on-optical-properties-of-ingan-quantum-dot-based-light-emitting-diodes
#13
Daniele Barettin, Matthias Auf der Maur, Aldo di Carlo, Alessandro Pecchia, Andrei F Tsatsulnikov, Alexei V Sakharov, Wsevolod V Lundin, Andrei E Nikolaev, Sergey O Usov, Nikolay Cherkashin, Martin J Hÿtch, Sergey Yu Karpov
The impact of electromechanical coupling on optical properties of light-emitting diodes (LEDs) with InGaN/GaN quantum-dot (QD) active regions is studied by numerical simulations. The structure, i.e. the shape and the average In content of the QDs, has been directly derived from experimental data on out-of-plane strain distribution obtained from the geometric-phase analysis of a high-resolution transmission electron microscopy image of an LED structure grown by metalorganic vapor-phase epitaxy. Using continuum [Formula: see text] calculations, we have studied first the lateral and full electromechanical coupling between the QDs in the active region and its impact on the emission spectrum of a single QD located in the center of the region...
November 29, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27897008/tracing-co-regulatory-network-dynamics-in-noisy-single-cell-transcriptome-trajectories
#14
Pablo Cordero, Joshua M Stuart
The availability of gene expression data at the single cell level makes it possible to probe the molecular underpinnings of complex biological processes such as differentiation and oncogenesis. Promising new methods have emerged for reconstructing a progression 'trajectory' from static single-cell transcriptome measurements. However, it remains unclear how to adequately model the appreciable level of noise in these data to elucidate gene regulatory network rewiring. Here, we present a framework called Single Cell Inference of MorphIng Trajectories and their Associated Regulation (SCIMITAR) that infers progressions from static single-cell transcriptomes by employing a continuous parametrization of Gaussian mixtures in high-dimensional curves...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27895629/genome-wide-discovery-of-putative-srnas-in-paracoccus-denitrificans-expressed-under-nitrous-oxide-emitting-conditions
#15
Hannah Gaimster, Lisa Chalklen, Mark Alston, John T Munnoch, David J Richardson, Andrew J Gates, Gary Rowley
Nitrous oxide (N2O) is a stable, ozone depleting greenhouse gas. Emissions of N2O into the atmosphere continue to rise, primarily due to the use of nitrogen-containing fertilizers by soil denitrifying microbes. It is clear more effective mitigation strategies are required to reduce emissions. One way to help develop future mitigation strategies is to address the currently poor understanding of transcriptional regulation of the enzymes used to produce and consume N2O. With this ultimate aim in mind we performed RNA-seq on a model soil denitrifier, Paracoccus denitrificans, cultured anaerobically under high N2O and low N2O emitting conditions, and aerobically under zero N2O emitting conditions to identify small RNAs (sRNAs) with potential regulatory functions transcribed under these conditions...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27895434/bay-41-2272-treatment-improves-acetylcholine-induced-aortic-relaxation-in-l-name-hypertensive-rats
#16
Shahid Prawez, Azad Ahmad Ahanger, Thakur Uttam Singh, Santosh Kumar Mishra, Souvendra Nath Sarkar, Dinesh Kumar
Hypertension, an emerging problem of recent era, and many pathophysiological factors are participating to produce the disease. Nitric oxide (NO) is an important constituent to ameliorate hypertensive condition. Inhibition of endogenous NO synthase by L-N(G)-Nitroarginine methyl ester (L-NAME) was responsible for generating hypertension in rats. BAY 41-2272 (5-cyclopropyl-2-[1-(2-fluoro-benzyl)-1H-pyrazolo[3,4-b]pyridine-3-yl]-pyrimidin-4-ylamine), a soluble guanylyl cyclase activator, restricts rise of blood pressure and shows cardioprotective activity...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/27894329/efficacy-of-early-controlled-motion-of-the-ankle-compared-with-no-motion-after-non-operative-treatment-of-an-acute-achilles-tendon-rupture-study-protocol-for-a-randomized-controlled-trial
#17
Kristoffer Weisskirchner Barfod, Maria Swennergren Hansen, Per Holmich, Anders Troelsen, Morten Tange Kristensen
BACKGROUND: Early controlled ankle motion is widely used in the non-operative treatment of acute Achilles tendon rupture, though its safety and efficacy have never been investigated in a randomized setup. The objectives of this study are to investigate if early controlled motion of the ankle affects functional and patient-reported outcomes. METHODS/DESIGN: The study is performed as a blinded, randomized, controlled trial with patients allocated in a 1:1 ratio to one of two parallel groups...
November 29, 2016: Trials
https://www.readbyqxmd.com/read/27894119/trajectories-and-predictors-of-allograft-dysfunction-after-renal-transplantation-in-children
#18
Vandréa Carla de Souza, Muriel Rabilloud, Pierre Cochat, Mario Bernardes Wagner, Clotilde Druck Garcia, Bruno Ranchin, Jean Iwaz, Luciano Selistre, Laurence Dubourg
BACKGROUND: The survival rates of renal transplant children are indeed on the rise, but it is still important to ensure that there is optimal renal function in these children in all their future growing years. The number of functioning nephrons and the graft ability to adapt to an increasing demand during body growth seem to be the most important factors for long-term allograft function. This study examined the long-term change in the glomerular filtration rate in a pediatric kidney transplant cohort and the importance of the recipient and donor ages in predicting transplant outcome...
November 29, 2016: American Journal of Nephrology
https://www.readbyqxmd.com/read/27894055/indirect-effects-of-climate-changes-on-cadmium-bioavailability-and-biological-effects-in-the-mediterranean-mussel-mytilus-galloprovincialis
#19
Alessandro Nardi, Luana Fiorella Mincarelli, Maura Benedetti, Daniele Fattorini, Giuseppe d'Errico, Francesco Regoli
Despite the great interest in the consequences of climate change on the physiological functioning of marine organisms, indirect and interactive effects of rising temperature and pCO2 on bioaccumulation and responsiveness to environmental pollutants are still poorly explored, particularly in terms of cellular mechanisms. According to future projections of temperature and pH/pCO2, this study investigated the main cellular pathways involved in metal detoxification and oxidative homeostasis in Mediterranean mussels, Mytilus galloprovincialis, exposed for 4 weeks to various combinations of two levels of pH/pCO2 (8...
November 25, 2016: Chemosphere
https://www.readbyqxmd.com/read/27893995/combined-effects-of-cadmium-temperature-and-hypoxia-reoxygenation-on-mitochondrial-function-in-rainbow-trout-oncorhynchus-mykiss
#20
John O Onukwufor, Don Stevens, Collins Kamunde
Although aquatic organisms face multiple environmental stressors that may interact to alter adverse outcomes, our knowledge of stressor-stressor interaction on cellular function is limited. We investigated the combined effects of cadmium (Cd), hypoxia-reoxygenation (H-R) and temperature on mitochondrial function. Liver mitochondria from juvenile rainbow trout were exposed to Cd (0-20μM) and H-R (0 and 5min) at 5, 13 and 25°C followed by measurements of mitochondrial Cd load, volume, complex І active (A)↔deactive (D) transition, membrane potential, ROS release and ultrastructural changes...
November 18, 2016: Aquatic Toxicology
keyword
keyword
12968
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"