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https://www.readbyqxmd.com/read/28735096/lipid-droplet-functions-beyond-energy-storage
#1
REVIEW
Michael A Welte, Alex P Gould
Lipid droplets are cytoplasmic organelles that store neutral lipids and are critically important for energy metabolism. Their function in energy storage is firmly established and increasingly well characterized. However, emerging evidence indicates that lipid droplets also play important and diverse roles in the cellular handling of lipids and proteins that may not be directly related to energy homeostasis. Lipid handling roles of droplets include the storage of hydrophobic vitamin and signaling precursors, and the management of endoplasmic reticulum and oxidative stress...
July 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28735095/regulation-of-lipid-droplet-associated-proteins-by-peroxisome-proliferator-activated-receptors
#2
REVIEW
Montserrat A de la Rosa Rodriguez, Sander Kersten
Excess fatty acids are stored in cells as triglycerides in specialized organelles called lipid droplets (LD). LD can be found in nearly all cell types and may expand during certain (patho)physiological conditions. The synthesis and breakdown of triglycerides and their deposition in LD is governed by a diverse set of enzymes and LD-associated proteins. These proteins serve structural roles in and around LD and regulate the activity of key lipogenic and lipolytic enzymes. The LD-associated proteins are subject to multiple regulatory mechanisms at the protein and gene expression level...
July 19, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28728997/sepsis-reconsidered-identifying-novel-metrics-for-behavioral-landscape-characterization-with-a-high-performance-computing-implementation-of-an-agent-based-model
#3
Chase Cockrell, Gary An
OBJECTIVES: Sepsis affects nearly 1 million people in the United States per year, has a mortality rate of 28-50% and requires more than $20 billion a year in hospital costs. Over a quarter century of research has not yielded a single reliable diagnostic test or a directed therapeutic agent for sepsis. Central to this insufficiency is the fact that sepsis remains a clinical/physiological diagnosis representing a multitude of molecularly heterogeneous pathological trajectories. Advances in computational capabilities offered by High Performance Computing (HPC) platforms call for an evolution in the investigation of sepsis to attempt to define the boundaries of traditional research (bench, clinical and computational) through the use of computational proxy models...
July 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28728060/clinical-neurophysiology-of-prolonged-disorders-of-consciousness-from-diagnostic-stimulation-to-therapeutic-neuromodulation
#4
REVIEW
Aldo Ragazzoni, Massimo Cincotta, Fabio Giovannelli, Damian Cruse, G Bryan Young, Carlo Miniussi, Simone Rossi
The identification of signs of awareness in patients with prolonged disorders of consciousness (DoC) after severe brain injury is a challenging task for clinicians. Differentiating on behavioural examination the vegetative state (VS) from the minimally conscious state (MCS) can lead to a high misdiagnosis rate. Advanced neuroimaging and neurophysiological techniques can supplement clinical evaluation by providing physiological evidence of brain activity. However, an open issue remains whether these empirical results are directly or indirectly associated with covert consciousness and limitations emerge for their diagnostic application at the single-patient level...
June 29, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28727963/going-in-many-right-directions-all-at-once
#5
Susan T Fiske
When asked whether the field is going in the right direction, my answer is "yes, mostly." Policymakers' respect and the public's interest put us in the spotlight for our intrinsic strengths-but they also draw attention to our weaknesses as reflected by the replication crisis, about which reasonable opinions differ. Among other concerns, civility and mutual tolerance have sometimes been an issue in these debates. As an example of a constructive debate, our lab's recent experience with mutually respectful engagement has advanced solving one scientific puzzle...
July 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28726962/recent-advances-in-functional-mesoporous-graphitic-carbon-nitride-mpg-c3n4-polymers
#6
REVIEW
Shaodong Sun, Shuhua Liang
Mesoporous micro-/nanostructures acting as supports for catalysts or used directly in catalysis reactions generally show fascinating performances that could lead to great potential for application. In the past few decades, extensive efforts have been devoted to the exploration and enrichment of graphitic carbon nitride (g-C3N4) based research. Especially, mesoporous g-C3N4 (mpg-C3N4) with controllable porosity and electronic/atomic structure can bring to bear unique physicochemical properties and has been widely applied in the fields of photocatalysis, adsorbents, sensors and chemical templates...
July 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28717017/modulation-of-lipid-biosynthesis-by-stress-in-diatoms
#7
REVIEW
Olga Sayanova, Virginie Mimouni, Lionel Ulmann, Annick Morant-Manceau, Virginie Pasquet, Benoît Schoefs, Johnathan A Napier
Diatoms are responsible for up to 40% of the carbon fixation in our oceans. The fixed carbon is moved through carbon metabolism towards the synthesis of organic molecules that are consumed through interlocking foodwebs, and this process is strongly impacted by the abiotic environment. However, it has become evident that diatoms can be used as 'platform' organisms for the production of high valuable bio-products such as lipids, pigments and carbohydrates where stress conditions can be used to direct carbon metabolism towards the commercial production of these compounds...
September 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28708343/-knowing-where-the-patients-would-like-to-die
#8
Karine Vantieghem, Françoise Laurent
The majority of the population wishes to die at home. However, most patients die in hospitals or nursing homes. What do health care professionals know about the choices of their patients in this matter? This study concerns persons who died from natural causes during the 1st semester of 2013 in 2 districts of the canton of Vaud. 241 of their health care professionals answered a questionnaire. Only 35.6 % knew their patient's wishes pertaining to where their death should take place. Despite the opportunity to speak about it with one's GP, the issue is not usually raised...
February 1, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28708339/-advance-directives-and-advance-care-planning
#9
Petra Vayne-Bossert, Christiane Vailloud, Dominique Ducloux, Caroline Matis, Laurence Déramé
Advance directives (AD) and Advance Care Planning (ACP) are two measures a person may undertake to assure that their treatment preferences will be respected until the end of his / her life. Anticipation is based on an open and honest communication between the patient, the durable medical power of attorney and the health care professionals. ADs and ACPs are based on a person's values and beliefs that are important to his quality of life. ACP is a continuing process, initiated by health care professionals and integrated into the health care plan of a person...
February 1, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28708182/multi-beam-pulsed-laser-patterning-of-plasmonic-films-using-broadband-diffractive-optical-elements
#10
A A Kuchmizhak, A P Porfirev, S A Syubaev, P A Danilov, A A Ionin, O B Vitrik, Yu N Kulchin, S N Khonina, S I Kudryashov
Multi-sector broadband diffractive optical elements (DOEs) were designed and fabricated from fused silica for high-efficiency multiplexing of femtosecond and nanosecond Gaussian laser beams into multiple (up to one 100) optically tunable microbeams with increased high-numerical aperture (NA) focal depths. Various DOE-related issues, such as high-NA laser focusing, laser pulsewidth, and DOE symmetry-dependent heat conduction effects, as well as the corresponding spatial resolution, were discussed in the context of high-throughput laser patterning...
July 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28701811/next-generation-agricultural-system-data-models-and-knowledge-products-introduction
#11
John M Antle, James W Jones, Cynthia E Rosenzweig
Agricultural system models have become important tools to provide predictive and assessment capability to a growing array of decision-makers in the private and public sectors. Despite ongoing research and model improvements, many of the agricultural models today are direct descendants of research investments initially made 30-40 years ago, and many of the major advances in data, information and communication technology (ICT) of the past decade have not been fully exploited. The purpose of this Special Issue of Agricultural Systems is to lay the foundation for the next generation of agricultural systems data, models and knowledge products...
July 2017: Agricultural Systems
https://www.readbyqxmd.com/read/28699524/biohybrid-membrane-systems-for-testing-molecules-and-stem-cell-therapy-in-neuronal-tissue-engineering
#12
Sabrina Morelli, Antonella Piscioneri, Simona Salerno, Enrico Drioli, Loredana De Bartolo
Current research in neural tissue-engineering is focused on the development of advanced biomaterials for the creation of sophisticated neuro-tissue analogues, showing that mimicking the in vivo tissue disposition and functions is a useful tool for the study of brain-related issues in normal and pathological states. In addition, the most common approach for developing new drug therapies is to carry out in vitro investigation before in vivo test, thus, it is increasingly important to develop valuable models that can predict the results of in vivo studies...
July 10, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28699365/activating-the-chromatin-by-non-coding-rnas
#13
Nihay Laham-Karam, Pia Laitinen, Tiia A Turunen, Seppo Ylä-Herttuala
SIGNIFICANCE: The extent and breadth of transcription has recently been uncovered and this has revealed an extensive array of non-coding RNAs (ncRNAs). The biological role and significance of these ncRNAs have been realised and to date it appears that ncRNA may have many important regulatory functions. ncRNAs are multifaceted and they induce a complexity of different types of transcriptional and post-transcriptional regulation including gene activation. Recent Advances: Association of ncRNAs with gene activation is an important finding...
July 12, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28695442/fistula-first-initiative-historical-impact-on-vascular-access-practice-patterns-and-influence-on-future-vascular-access-care
#14
Timmy Lee
The vascular access is the lifeline for the hemodialysis patient. In the United States, the Fistula First Breakthrough Initiative (FFBI) has been influential in improving use of arteriovenous fistulas (AVF) in prevalent hemodialysis patients. Currently, prevalent AVF rates are near the goal of 66% set forth by the original FFBI. However, central venous catheter (CVC) rates remain very high in the United States in patients initiating hemodialysis, nearly exceeding 80%. A new direction of the of the FFBI has focused on strategies to reduce CVC use, and subsequently the FFBI has now been renamed the "Fistula First-Catheter Last Initiative"...
July 10, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28693802/the-vicious-circle-of-treatment-induced-toxicities-in-locally-advanced-head-and-neck-cancer-and-the-impact-on-treatment-intensity
#15
REVIEW
Bossi Paolo, Cossu Rocca Maria, Corvò Renzo, Depenni Roberta, Guardamagna Vittorio, Marinangeli Franco, Miccichè Francesco, Trippa Fabio
The intensity of the available treatment approaches for locally-advanced head and neck cancer (HNC) is at the upper limit of tolerance of acute toxicities. Several factors including breakthrough cancer pain, mucositis, dysphagia, local and systemic infections, and nutritional problems are related to treatment intensity. Particularly, pain, as symptom directly associated with the disease or combined with other treatment-related factors, has a major impact on quality of life of HNC patients and ultimately can influence the efficacy of treatments in HNC...
August 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28692303/searching-for-biosignatures-in-exoplanetary-impact-ejecta
#16
Gianni Cataldi, Alexis Brandeker, Philippe Thébault, Kelsi Singer, Engy Ahmed, Bernard L de Vries, Anna Neubeck, Göran Olofsson
With the number of confirmed rocky exoplanets increasing steadily, their characterization and the search for exoplanetary biospheres are becoming increasingly urgent issues in astrobiology. To date, most efforts have concentrated on the study of exoplanetary atmospheres. Instead, we aim to investigate the possibility of characterizing an exoplanet (in terms of habitability, geology, presence of life, etc.) by studying material ejected from the surface during an impact event. For a number of impact scenarios, we estimate the escaping mass and assess its subsequent collisional evolution in a circumstellar orbit, assuming a Sun-like host star...
July 10, 2017: Astrobiology
https://www.readbyqxmd.com/read/28687135/advance-care-planning-within-survivorship-care-plans-for-older-cancer-survivors-a-systematic-review
#17
REVIEW
Rónán O'Caoimh, Nicola Cornally, Ronan O'Sullivan, Ruth Hally, Elizabeth Weathers, Amanda H Lavan, Tara Kearns, Alice Coffey, Ciara McGlade, D William Molloy
Advances in the medical treatment of cancer have increased the number of survivors, particularly among older adults, who now represent the majority of these. Survivorship care plans (SCPs) are documents that cancer patients receive summarising their care, usually at the end of treatment but preferably from initial diagnosis. These may increase patient satisfaction and represent an opportunity to initiate preventative strategies and address future care needs. Advance care planning (ACP), incorporating advance healthcare decision-making, including formal written directives, increases satisfaction and end-of-life care...
June 23, 2017: Maturitas
https://www.readbyqxmd.com/read/28683567/the-nad-dependent-family-of-sirtuins-in-cerebral-ischemia-and-preconditioning
#18
Nathalie Khoury, Kevin B Koronowski, Juan I Young, Miguel A Perez-Pinzon
Significance Sirtuins are an evolutionarily conserved family of NAD+-dependent lysine deacylases and ADP-ribosylases. Their requirement for NAD+ as a co-substrate allows them to act as metabolic sensors that couple changes in the energy status of the cell to changes in cellular physiological processes. NAD+ levels are affected by several NAD+-producing and -consuming pathways as well as by cellular respiration. Thus their intracellular levels are highly dynamic and become misregulated in a spectrum of metabolic disorders including cerebral ischemia...
July 6, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28679281/lipid-mediated-modulation-of-intracellular-ion-channels-and-redox-state-physio-pathological-implications
#19
Marisa Brini, Luigi Leanza, Ildiko Szabo
<i>Significance</i>: Ion channels play an important role in the regulation of organelle function within the cell, as proven by increasing evidence pointing to a link between altered function of intracellular ion channels and different pathologies ranging from cancer to neurodegenerative diseases, ischemic damage and lysosomal storage diseases. <i>Recent Advances</i>: A link between these pathologies and redox state as well as lipid homeostasis and ion channel function is in the focus of current research...
July 5, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28676293/attitudes-toward-advance-directives-among-patients-and-their-family-members-in-china
#20
Lin Kang, Xiao-Hong Liu, Jing Zhang, Pei-Yan Shan, Jie-Ping Wang, Ping Zhong, Xiao-Hong Du, Yu-Feng Du, Bao-Cheng Yu, Nan Wei, Hui-Ling Lou, Ou Bian, Huai-Hong Chen, Fan Lin, Hong-Lian Zhou, Wen He, Huai-Cong Long, Lu-Rong Hong, Hui Su, Jun-Nan Yang, Yong-Liang Jiang, Ye Shi, Jing Ning, Fang Liang, Zhong Wang, Ting Gong, Ming-Lei Zhu, Xiao-Hong Ning, Zhi-Jun Chen, Liang-Kung Chen
OBJECTIVES: Chinese people are generally unfamiliar with the concept of advance care planning or advance directives (ACP/ADs), which raises dilemmas in life-support choice and can even affect clinical decision making. To understand and address the issues involved better, we investigated the awareness of ACP/ADs in China, as well as people's attitudes toward medical autonomy and end-of-life care. DESIGN: A multicenter cross-sectional survey, conducted from August 1 to December 31, 2016...
July 1, 2017: Journal of the American Medical Directors Association
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