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https://www.readbyqxmd.com/read/28324900/infant-guided-co-regulated-feeding-in-the-neonatal-intensive-care-unit-part-ii-interventions-to-promote-neuroprotection-and-safety
#1
Catherine S Shaker
Feeding skills of preterm neonates in a neonatal intensive care unit are in an emergent phase of development and require careful support to minimize stress. The underpinnings that influence and enhance both neuroprotection and safety were discussed in Part I. An infant-guided, co-regulated approach to feeding can protect the vulnerable neonate's neurologic development, support the parent-infant relationship, and prevent feeding problems that may endure. Contingent interventions are used to maintain subsystem stability and enhance self-regulation, development, and coping skills...
April 2017: Seminars in Speech and Language
https://www.readbyqxmd.com/read/28324503/visualization-of-human-telomerase-localization-by-fluorescence-microscopy-techniques
#2
Eladio Abreu, Rebecca M Terns, Michael P Terns
Human telomerase is a ribonucleoprotein (RNP) that synthesizes DNA repeats at the ends of chromosomes and maintains telomere length and genome stability. The enzyme is comprised of telomerase RNA (hTR) (which provides the template for telomere addition) and several protein subunits including telomerase reverse transcriptase (hTERT) (the catalytic component). Intracellular trafficking of the enzyme has emerged as an important factor in the regulation of telomerase activity. Telomerase trafficking between nuclear Cajal bodies (proposed sites of telomerase biogenesis and regulation) and telomeres (sites of action) is regulated by the cell cycle in concordance with telomere synthesis during S phase...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28323674/emergency-presentation-of-esophagogastric-cancer-predictors-and-long-term-prognosis
#3
Sheraz R Markar, Hugh Mackenzie, Sara Jemal, Omar Faiz, David Cunningham, George B Hanna
OBJECTIVE: To identify patient factors that are associated with emergency presentation of esophageal and gastric cancer, and further to evaluate long-term prognosis in this cohort. BACKGROUND: The incidence of emergency presentation is variable, with the prognosis of patients stabilized and discharged to return for elective surgery unknown. METHODS: The primary admission of patients with esophageal or gastric cancer within the Hospital Episode Statistics database (1997-2012) was used to classify as emergency or elective diagnosis...
March 20, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28319811/protein-epitope-mimetic-macrocycles-as-biopharmaceuticals
#4
REVIEW
Anatol Luther, Kerstin Moehle, Eric Chevalier, Glenn Dale, Daniel Obrecht
Fully synthetic medium-sized macrocyclic peptides mimicking the key β-hairpin and α-helical protein epitopes relevant in many protein-protein interactions have emerged as a novel class of drugs with the potential to fill an important gap between small molecules and proteins. Conformationally stabilized macrocyclic scaffolds represent ideal templates for medicinal chemists to incorporate bioactive peptide and protein pharmacophores in order to generate novel drugs to treat diseases with high unmet medical need...
March 5, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/28319485/recent-trends-in-the-prevalence-of-chronic-kidney-disease-not-the-same-old-song
#5
Raymond K Hsu, Neil R Powe
PURPOSE OF REVIEW: We aim to review recent updates on the epidemiology of chronic kidney disease (CKD). RECENT FINDINGS: Recent analyses from the National Health and Nutritional Examination survey describe the temporal trend in CKD prevalence in US adults. The overall prevalence of estimated glomerular filtration rate less than 60 ml/min/1.73 m increased from 4.8% in 1988-1994 to 6.9% in 2003-2004, but has since stabilized at 6.4-6.9% up to 2011-2012. Prevalence of CKD stages 1-4 has also stabilized at ∼14% of adults since 2003-2004...
March 17, 2017: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/28319368/comparative-analysis-reveals-furoyl-in-vivo-shape-rea-gents-form-stable-ribosyl-ester-adducts
#6
Dalen Chan, Chao Feng, Yuran Zhen, Ryan Flynn, Robert C Spitale
RNA molecules depend on structural elements which are critical for cellular function. Chemical methods to probe RNA structure have emerged as a necessary component of characterizing RNA function. As such, understanding the limitations and idiosyncrasies of such methods are essential for their utility. Selective hydroxyl acylation has emerged as a common method for analyzing RNA structure. Ester products as a result from 2'-hydroxyl acylation can then be identified through reverse transcription or mutational enzyme profiling...
March 20, 2017: Biochemistry
https://www.readbyqxmd.com/read/28319187/the-impact-of-high-grade-glial-neoplasms-on-human-cortical-electrophysiology
#7
S Kathleen Bandt, Jarod L Roland, Mrinal Pahwa, Carl D Hacker, David T Bundy, Jonathan D Breshears, Mohit Sharma, Joshua S Shimony, Eric C Leuthardt
OBJECTIVE: The brain's functional architecture of interconnected network-related oscillatory patterns in discrete cortical regions has been well established with functional magnetic resonance imaging (fMRI) studies or direct cortical electrophysiology from electrodes placed on the surface of the brain, or electrocorticography (ECoG). These resting state networks exhibit a robust functional architecture that persists through all stages of sleep and under anesthesia. While the stability of these networks provides a fundamental understanding of the organization of the brain, understanding how these regions can be perturbed is also critical in defining the brain's ability to adapt while learning and recovering from injury...
2017: PloS One
https://www.readbyqxmd.com/read/28319066/nucleus-accumbens-associated-protein-1-promotes-glycolysis-and-survival-of-hypoxic-tumor-cells-via-the-hdac4-hif-1%C3%AE-axis
#8
Y Zhang, Y-J Ren, L-C Guo, C Ji, J Hu, H-H Zhang, Q-H Xu, W-D Zhu, Z-J Ming, Y-S Yuan, X Ren, J Song, J-M Yang
Nucleus accumbens-associated protein-1 (NAC1), a nuclear factor of the BTB/POZ gene family, has emerging roles in cancer. In this study, we identified the NAC1-HDAC4-HIF-1α axis as an important pathway in regulating glycolysis and hypoxic adaptation in tumor cells. We show that nuclear NAC1 binds to histone deacetylase type 4 (HDAC4), hindering phosphorylation of HDAC4 at Ser(246) and preventing its nuclear export that leads to cytoplasmic degradation of the deacetylase. Accumulation of HDAC4 in the nuclei results in an attenuation of HIF-1α acetylation, enhancing the stabilization and transcriptional activity of HIF-1α and strengthening adaptive response of cells to hypoxia...
March 20, 2017: Oncogene
https://www.readbyqxmd.com/read/28318990/junctional-hemorrhage-control-for-tactical-combat-casualty-care
#9
REVIEW
Russ S Kotwal, Frank K Butler
During historic, as well as more recent, conflicts, most combat casualties who die from their injuries do so in the prehospital setting. Although many of the injuries incurred by these casualties are nonsurvivable, a number of injuries are still potentially survivable. Of those injuries that are potentially survivable, the majority are truncal, junctional, and extremity hemorrhage. Novel and effective approaches directed toward prehospital hemorrhage control have emerged in recent years, some of which can prove useful in the management of junctional hemorrhage whether in a military or civilian setting...
March 16, 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28315716/critical-material-attributes-cmas-of-strip-films-loaded-with-poorly-water-soluble-drug-nanoparticles-iii-impact-of-drug-nanoparticle-loading
#10
Scott M Krull, Jacqueline Moreno, Meng Li, Ecevit Bilgili, Rajesh N Davé
Polymer strip films have emerged as a robust platform for poorly water-soluble drug delivery. However, the common conception is that films cannot exceed low drug loadings, mainly due to poor drug stability, slow release, and film brittleness. This study explores the ability to achieve high loadings of poorly water-soluble drug nanoparticles in strip films while retaining good mechanical properties and enhanced dissolution rate. Aqueous suspensions containing up to 30wt% griseofulvin nanoparticles were prepared via wet stirred media milling and incorporated into hydroxypropyl methylcellulose (HPMC) films...
March 15, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28315464/a-novel-nanosuspension-of-andrographolide-preparation-characterization-and-passive-liver-target-evaluation-in-rats
#11
Ligang Guo, Le Kang, Xinrong Liu, Xiangyun Lin, Donghua Di, Yong Wu, Dexian Kong, Yihui Deng, Yanzhi Song
Andrographolide (Andro) is an excellent anti-inflammatory bicyclic diterpene γ-lactone. However, the poor solubility limits its application as injection for the treatment of acute inflammation. To meet the clinical needs for emergency, the Andro nanosuspensions injection was first prepared by the wet milling technique. The Andro nanosuspensions were composed of 3% Andro, 5% poloxamer 188 as the non-ionic stabilizer, 0.05% sodium deoxycholate or 0.1% sodium tauroursodeoxy cholate as the ionic stabilizer, and prepared by 350rpm speed and 12cycles of grinding with 0...
March 14, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28315173/ricolinostat-a-selective-hdac6-inhibitor-shows-anti-lymphoma-cell-activity-alone-and-in-combination-with-bendamustine
#12
Maria Cosenza, Monica Civallero, Luigi Marcheselli, Stefano Sacchi, Samantha Pozzi
Histone deacetylase inhibitors (HDACis) have emerged as a new class of anticancer agents, targeting the biological process including cell cycle and apoptosis. We investigated and explained the anticancer effects of an HDAC6 inhibitor, ricolinostat alone and in combination with bendamustine in lymphoma cell lines. Cell viability was measured by MTT assay. Apoptosis, reactive oxygen species (ROS) generation, Bcl-2 protein expression, cell cycle progression and tubuline expression were determined by flow cytometry...
March 17, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28306670/innovations-in-cardiac-transplantation
#13
Reema Hasan, Ashraf Abou El Ela, Daniel Goldstein
PURPOSE OF REVIEW: As the number of people living with heart failure continues to grow, future treatments will focus on efficient donor organ donation and ensuring safe and durable outcomes. This review will focus on organ procurement, graft surveillance and emerging therapies. RECENT FINDINGS: Preliminary studies into donation after cardiac death have indicated that this may be an effective means to increase the donor pool. Novel preservation techniques that include ex-vivo perfusion to improve donor metabolic stabilization prior to implantation may also expand the donor pool...
March 16, 2017: Current Opinion in Cardiology
https://www.readbyqxmd.com/read/28306279/light-induced-metastable-magnetic-texture-uncovered-by-in%C3%A2-situ-lorentz-microscopy
#14
Tim Eggebrecht, Marcel Möller, J Gregor Gatzmann, Nara Rubiano da Silva, Armin Feist, Ulrike Martens, Henning Ulrichs, Markus Münzenberg, Claus Ropers, Sascha Schäfer
Magnetic topological defects, such as vortices and Skyrmions, can be stabilized as equilibrium structures in nanoscale geometries and by tailored intrinsic magnetic interactions. Here, employing rapid quench conditions, we report the observation of a light-induced metastable magnetic texture, which consists of a dense nanoscale network of vortices and antivortices. Our results demonstrate the emergence of ordering mechanisms in quenched optically driven systems, which may give a general access to novel magnetic structures on nanometer length scales...
March 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28306166/noncentrosymmetric-magnets-hosting-magnetic-skyrmions
#15
REVIEW
Naoya Kanazawa, Shinichiro Seki, Yoshinori Tokura
The concept of a skyrmion, which was first introduced by Tony Skyrme in the field of particle physics, has become widespread in condensed matter physics to describe various topological orders. Skyrmions in magnetic materials have recently received particular attention; they represent vortex-like spin structures with the character of nanometric particles and produce fascinating physical properties rooted in their topological nature. Here, a series of noncentrosymmetric ferromagnets hosting skyrmions is reviewed: B20 metals, Cu2 OSeO3 , Co-Zn-Mn alloys, and GaV4 S8 , where Dzyaloshinskii-Moriya interaction plays a key role in the stabilization of skyrmion spin texture...
March 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28303197/heterogeneous-tempo-and-mode-of-evolutionary-diversification-of-compounds-in-lizard-chemical-signals
#16
Roberto García-Roa, Manuel Jara, Pilar López, José Martín, Daniel Pincheira-Donoso
Important part of the multivariate selection shaping social and interspecific interactions among and within animal species emerges from communication. Therefore, understanding the diversification of signals for animal communication is a central endeavor in evolutionary biology. Over the last decade, the rapid development of phylogenetic approaches has promoted a stream of studies investigating evolution of communication signals. However, comparative research has primarily focused on visual and acoustic signals, while the evolution of chemical signals remains largely unstudied...
February 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28302108/confirmation-of-plasmodium-falciparum-in-vitro-resistance-to-monodesethylamodiaquine-and-chloroquine-in-dakar-senegal-in-2015
#17
Silman Diawara, Marylin Madamet, Mame Bou Kounta, Gora Lo, Khalifa Ababacar Wade, Aminata Nakoulima, Raymond Bercion, Rémy Amalvict, Mamadou Wague Gueye, Bécaye Fall, Bakary Diatta, Bruno Pradines
BACKGROUND: In response to increasing resistance to anti-malarial drugs, Senegal adopted artemisinin-based combination therapy (ACT) as the first-line treatment for uncomplicated malaria in 2006. However, resistance of Plasmodium falciparum parasites to artemisinin derivatives, characterized by delayed parasite clearance after treatment with ACT or artesunate monotherapy, has recently emerged and rapidly spread in Southeast Asia. After 10 years of stability with rates ranging from 5.6 to 11...
March 16, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28302038/current-application-of-quantum-dots-qd-in-cancer-therapy-a-review
#18
Lavanya Thilak Babu, Priyankar Paira
Semiconductor quantum dots proved themselves as an efficient fluorescent probes in cancer detection and treatment. Their size, high stability, non-photobleaching and water solubility made them a unique fluorophore in place of conventional organic dyes. Newly emerged theranoistic drug delivery system using quantum dots helped us in better understanding of the drug delivery mechanism inside the cells. Surface modified Quantum dots and their applications became wide in bioimaging, immunohistochemistry, tracking intracellular drug and intracellular molecules target...
March 15, 2017: Mini Reviews in Medicinal Chemistry
https://www.readbyqxmd.com/read/28302017/targeting-pyrimidine-pathway-of-plasmodium-knowlesi-new-strategies-towards-identification-of-novel-antimalarial-chemotherapeutic-agents
#19
Mayank Rashmi, Manoj Kumar Yadav, D Swati
Plasmodium knowlesi has been recently recognized as a human malarial parasite, particularly in the region of south-east Asia. The effective prevention and treatment of this disease is increasingly bound to fail due to the emergence of drug resistance. Hence, design of new drugs against known targets is gaining importance. Pyrimidine pathway is a crucial metabolic pathway in P. knowlesi, and the enzymes involved are also unique in terms of their structure and function as compared to its human counterpart. Thus targeting Dihydroorotase, an enzyme involved in the pyrimidine pathway, provides a promising route for novel drug development...
March 15, 2017: Combinatorial Chemistry & High Throughput Screening
https://www.readbyqxmd.com/read/28301766/biophysical-models-of-protein-evolution-understanding-the-patterns-of-evolutionary-sequence-divergence
#20
Julian Echave, Claus O Wilke
For decades, rates of protein evolution have been interpreted in terms of the vague concept of functional importance. Slowly evolving proteins or sites within proteins were assumed to be more functionally important and thus subject to stronger selection pressure. More recently, biophysical models of protein evolution, which combine evolutionary theory with protein biophysics, have completely revolutionized our view of the forces that shape sequence divergence. Slowly evolving proteins have been found to evolve slowly because of selection against toxic misfolding and misinteractions, linking their rate of evolution primarily to their abundance...
March 15, 2017: Annual Review of Biophysics
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