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Biology pacing

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https://www.readbyqxmd.com/read/28815588/the-tooth-the-whole-tooth-and-nothing-but-the-tooth-tooth-shape-and-ontogenetic-shift-dynamics-in-the-white-shark-carcharodon-carcharias
#1
G C A French, M Stürup, S Rizzuto, J H van Wyk, D Edwards, R W Dolan, S P Wintner, A V Towner, W O H Hughes
Results from this study of the white shark Carcharodon carcharias include measurements obtained using a novel photographic method that reveal significant differences between the sexes in the relationship between tooth cuspidity and shark total length, and a novel ontogenetic change in male tooth shape. Males exhibit broader upper first teeth and increased distal inclination of upper third teeth with increasing length, while females do not present a consistent morphological change. Substantial individual variation, with implications for pace of life syndrome, was present in males and tooth polymorphism was suggested in females...
August 17, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28813554/association-between-purpose-in-life-and-objective-measures-of-physical-function-in-older-adults
#2
Eric S Kim, Ichiro Kawachi, Ying Chen, Laura D Kubzansky
Importance: Higher purpose in life is hypothesized to reduce the likelihood of developing weak grip strength and slow walking speed because purpose has been linked with a range of positive health behaviors and biological processes that are potentially protective against declining physical function. However, the association between purpose in life and objective physical function has not been examined. Objective: To assess whether higher purpose in life among adequately functioning older adults is associated with lower risk of developing weak grip strength and slow walking speed over time...
August 16, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/28804678/capacitively-coupled-arrays-of-multiplexed-flexible-silicon-transistors-for-long-term-cardiac-electrophysiology
#3
Hui Fang, Ki Jun Yu, Christopher Gloschat, Zijian Yang, Chia-Han Chiang, Jianing Zhao, Sang Min Won, Siyi Xu, Michael Trumpis, Yiding Zhong, Enming Song, Seung Won Han, Yeguang Xue, Dong Xu, Gert Cauwenberghs, Matthew Kay, Yonggang Huang, Jonathan Viventi, Igor R Efimov, John A Rogers
Advanced capabilities in electrical recording are essential for the treatment of heart-rhythm diseases. The most advanced technologies use flexible integrated electronics; however, the penetration of biological fluids into the underlying electronics and any ensuing electrochemical reactions pose significant safety risks. Here, we show that an ultrathin, leakage-free, biocompatible dielectric layer can completely seal an underlying layer of flexible electronics while allowing for electrophysiological measurements through capacitive coupling between tissue and the electronics, and thus without the need for direct metal contact...
2017: Nature biomedical engineering
https://www.readbyqxmd.com/read/28800196/furthering-knowledge-of-seaweed-growth-and-development-to-facilitate-sustainable-aquaculture
#4
Bénédicte Charrier, Maria Helena Abreu, Rita Araujo, Annette Bruhn, Juliet C Coates, Olivier De Clerck, Christos Katsaros, Rafael R Robaina, Thomas Wichard
Macroalgae (seaweeds) are the subject of increasing interest for their potential as a source of valuable, sustainable biomass in the food, feed, chemical and pharmaceutical industries. Compared with microalgae, the pace of knowledge acquisition in seaweeds is slower despite the availability of whole-genome sequences and model organisms for the major seaweed groups. This is partly a consequence of specific hurdles related to the large size of these organisms and their slow growth. As a result, this basic scientific field is falling behind, despite the societal and economic importance of these organisms...
August 11, 2017: New Phytologist
https://www.readbyqxmd.com/read/28795492/treatment-of-alk-rearranged-non-small-cell-lung-cancer-a-review-of-the-landscape-and-approach-to-emerging-patterns-of-treatment-resistance-in-the-australian-context
#5
M Itchins, P L Chia, S A Hayes, V M Howell, A J Gill, W A Cooper, T John, P Mitchell, M Millward, S J Clarke, B Solomon, N Pavlakis
Since the identification of anaplastic lymphoma kinase (ALK) gene rearrangements in non-small cell lung cancer (NSCLC) in 2005, the treatment of ALK-rearranged NSCLC (ALK+ NSCLC) has evolved at a rapid pace. This molecularly distinct subset of NSCLC has uniquely important biology, clinicopathologic features and mechanisms of drug resistance which impact on the choice of treatment for a patient with this disease. There are multiple ALK tyrosine kinase inhibitors now available in clinical practice with efficacy data continuing to emerge and guide the optimal treatment algorithm...
August 2017: Asia-Pacific Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28765100/pacing-conventional-physical-activity-and-active-video-games-to-increase-physical-activity-for-adults-with-myalgic-encephalomyelitis-chronic-fatigue-syndrome-protocol-for-a-pilot-randomized-controlled-trial
#6
Katia Elizabeth Ferrar, Ashleigh E Smith, Kade Davison
BACKGROUND: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a serious illness of biological origin characterized by profound physical and cognitive exhaustion and postexertion malaise. Pacing is a common strategy used to manage available energy and complete activities of daily living; yet little research has investigated this as a strategy to increase physical activity levels. Typically, people living with ME/CFS are faced by unique barriers to physical activity participation and are less physically active than healthy peers...
August 1, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28755502/an-efficient-transformation-method-for-the-bioplastic-producing-knallgas-bacterium-ralstonia-eutropha-h16
#7
Kang Lan Tee, James Grinham, Arona Martin Othusitse, Miriam Gonzalez-Villanueva, Abayomi Oluwanbe Johnson, Tuck Seng Wong
Ralstonia eutropha H16 (also known as Cupriavidus necator H16) is a Gram-negative lithoautotrophic β-proteobacterium with increasing biotechnological applications, including carbon capture and utilization, biopolymer synthesis and biofuel production. Engineering of this organism is supported by the availability of its genome sequence and suitable plasmid systems. However, the lack of a simple and robust transformation method remains a challenge as it limits both the pace and ease of engineering this organism...
July 29, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28739936/gene-culture-coevolution-in-whales-and-dolphins
#8
Hal Whitehead
Whales and dolphins (Cetacea) have excellent social learning skills as well as a long and strong mother-calf bond. These features produce stable cultures, and, in some species, sympatric groups with different cultures. There is evidence and speculation that this cultural transmission of behavior has affected gene distributions. Culture seems to have driven killer whales into distinct ecotypes, which may be incipient species or subspecies. There are ecotype-specific signals of selection in functional genes that correspond to cultural foraging behavior and habitat use by the different ecotypes...
July 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28733909/genetics-molecular-and-proteomics-advances-in-filamentous-fungi
#9
REVIEW
Prakriti Sharma Ghimire, Cheng Jin
Filamentous fungi play a dynamic role in health and the environment. In addition, their unique and complex hyphal structures are involved in their morphogenesis, integrity, synthesis, and degradation, according to environmental and physiological conditions and resource availability. However, in biotechnology, it has a great value in the production of enzymes, pharmaceuticals, and food ingredients. The beginning of nomenclature of overall fungi started in early 1990 after which the categorization, interior and exterior mechanism, function, molecular and genetics study took pace...
July 22, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28726731/the-use-of-imaging-in-the-prediction-and-assessment-of-cancer-treatment-toxicity
#10
REVIEW
Hossein Jadvar
Multimodal imaging is commonly used in the management of patients with cancer. Imaging plays pivotal roles in the diagnosis, initial staging, treatment response assessment, restaging after treatment and the prognosis of many cancers. Indeed, it is difficult to imagine modern precision cancer care without the use of multimodal molecular imaging, which is advancing at a rapid pace with innovative developments in imaging sciences and an improved understanding of the complex biology of cancer. Cancer therapy often leads to undesirable toxicity, which can range from an asymptomatic subclinical state to severe end organ damage and even death...
July 20, 2017: Diagnostics
https://www.readbyqxmd.com/read/28725482/systems-biology-driving-drug-development-from-design-to-the-clinical-testing-of-the-anti-erbb3-antibody-seribantumab-mm-121
#11
REVIEW
Birgit Schoeberl, Art Kudla, Kristina Masson, Ashish Kalra, Michael Curley, Gregory Finn, Emily Pace, Brian Harms, Jaeyeon Kim, Jeff Kearns, Aaron Fulgham, Olga Burenkova, Viara Grantcharova, Defne Yarar, Violette Paragas, Jonathan Fitzgerald, Marisa Wainszelbaum, Kip West, Sara Mathews, Rachel Nering, Bambang Adiwijaya, Gabriela Garcia, Bill Kubasek, Victor Moyo, Akos Czibere, Ulrik B Nielsen, Gavin MacBeath
The ErbB family of receptor tyrosine kinases comprises four members: epidermal growth factor receptor (EGFR/ErbB1), human EGFR 2 (HER2/ErbB2), ErbB3/HER3, and ErbB4/HER4. The first two members of this family, EGFR and HER2, have been implicated in tumorigenesis and cancer progression for several decades, and numerous drugs have now been approved that target these two proteins. Less attention, however, has been paid to the role of this family in mediating cancer cell survival and drug tolerance. To better understand the complex signal transduction network triggered by the ErbB receptor family, we built a computational model that quantitatively captures the dynamics of ErbB signaling...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28725029/prominent-differences-in-left-ventricular-performance-and-myocardial-properties-between-right-ventricular-and-left-ventricular-based-pacing-modes-in-rats
#12
Wesam Mulla, Sharon Etzion, Sigal Elyagon, Roni Gillis, Michael Murninkas, Yuval Konstantino, Ingra Mannhardt, Thomas Eschenhagen, Noah Liel-Cohen, Yoram Etzion
Biventricular pacing is an important modality to improve left ventricular (LV) synchronization and long-term function. However, the biological effects of this treatment are far from being elucidated and existing animal models are limited and demanding. Recently, we introduced an implanted device for double-site epicardial pacing in rats and echocardiographically demonstrated favorable effects of LV and biventricular (LV-based) pacing modes typically observed in humans. Here, this new animal model was further characterized...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28717530/comparative-and-integrative-analysis-of-rna-structural-profiling-data-current-practices-and-emerging-questions
#13
Krishna Choudhary, Fei Deng, Sharon Aviran
BACKGROUND: Structure profiling experiments provide single-nucleotide information on RNA structure. Recent advances in chemistry combined with application of high-throughput sequencing have enabled structure profiling at transcriptome scale and in living cells, creating unprecedented opportunities for RNA biology. Propelled by these experimental advances, massive data with ever-increasing diversity and complexity have been generated, which give rise to new challenges in interpreting and analyzing these data...
March 2017: Quantitative Biology
https://www.readbyqxmd.com/read/28717316/induced-pluripotent-stem-cell-a-headway-in-reprogramming-with-promising-approach-in-regenerative-biology
#14
REVIEW
N Rawat, M K Singh
Since the embryonic stem cells have knocked the doorsteps, they have proved themselves in the field of science, research, and medicines, but the hovered restrictions confine their application in human welfare. Alternate approaches used to reprogram the cells to the pluripotent state were not up to par, but the innovation of induced pluripotent stem cells (iPSCs) paved a new hope for the researchers. Soon after the discovery, iPSCs technology is undergoing renaissance day by day, i.e., from the use of genetic material to recombinant proteins and now only chemicals are employed to convert somatic cells to iPSCs...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28714074/altered-metabolomic-genomic-signature-a-potential-noninvasive-biomarker-of-epilepsy
#15
Helen C Wu, Fabien Dachet, Farhad Ghoddoussi, Shruti Bagla, Darren Fuerst, Jeffrey A Stanley, Matthew P Galloway, Jeffrey A Loeb
OBJECTIVE: This study aimed to identify noninvasive biomarkers of human epilepsy that can reliably detect and localize epileptic brain regions. Having noninvasive biomarkers would greatly enhance patient diagnosis, patient monitoring, and novel therapy development. At the present time, only surgically invasive, direct brain recordings are capable of detecting these regions with precision, which severely limits the pace and scope of both clinical management and research progress in epilepsy...
July 17, 2017: Epilepsia
https://www.readbyqxmd.com/read/28703295/expanding-career-pathways-in-conservation-science
#16
Erika Zavaleta, Clare Aslan, Wendy Palen, Tom Sisk, Maureen E Ryan, Brett Dickson
Since its inception, conservation biology has inspired thousands of students, spurred the creation of new initiatives, organizations and agencies, and informed conservation efforts worldwide. Nevertheless, global biodiversity loss is accelerating (Butchart et al. 2010), and our field needs to change to keep pace with mounting challenges. Conservation would benefit if scientists more enthusiastically pushed the institutional boundaries of our field through their efforts to expand their own and others' career options and professional opportunities...
July 13, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28693924/site-1-protease-and-lysosomal-homeostasis
#17
REVIEW
Renata Voltolini Velho, Raffaella De Pace, Sarah Klünder, Giorgia Di Lorenzo, Michaela Schweizer, Thomas Braulke, Sandra Pohl
The Golgi-resident site-1 protease (S1P) is a key regulator of cholesterol homeostasis and ER stress responses by converting latent transcription factors sterol regulatory element binding proteins (SREPBs) and activating transcription factor 6 (ATF6), as well as viral glycoproteins to their active forms. S1P is also essential for lysosome biogenesis by the proteolytic activation of the hexameric GlcNAc-1-phosphotransferase complex required for modification of newly synthesized lysosomal enzymes with the lysosomal targeting signal, mannose 6-phosphate...
July 7, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28679748/evolution-of-the-staphylococcus-argenteus-st2250-clone-in-northeastern-thailand-is-linked-with-the-acquisition-of-livestock-associated-staphylococcal-genes
#18
Danesh Moradigaravand, Dorota Jamrozy, Rafal Mostowy, Annaliesa Anderson, Emma K Nickerson, Janjira Thaipadungpanit, Vanaporn Wuthiekanun, Direk Limmathurotsakul, Sarunporn Tandhavanant, Chanthiwa Wikraiphat, Gumphol Wongsuvan, Nittaya Teerawattanasook, Yaowaruk Jutrakul, Nuttiya Srisurat, Prajuab Chaimanee, T Eoin West, Beth Blane, Julian Parkhill, Narisara Chantratita, Sharon J Peacock
Staphylococcus argenteus is a newly named species previously described as a divergent lineage of Staphylococcus aureus that has recently been shown to have a global distribution. Despite growing evidence of the clinical importance of this species, knowledge about its population epidemiology and genomic architecture is limited. We used whole-genome sequencing to evaluate and compare S. aureus (n = 251) and S. argenteus (n = 68) isolates from adults with staphylococcal sepsis at several hospitals in northeastern Thailand between 2006 and 2013...
July 5, 2017: MBio
https://www.readbyqxmd.com/read/28671948/stochasticity-in-the-enterococcal-sex-pheromone-response-revealed-by-quantitative-analysis-of-transcription-in-single-cells
#19
Rebecca J Breuer, Arpan Bandyopadhyay, Sofie A O'Brien, Aaron M T Barnes, Ryan C Hunter, Wei-Shou Hu, Gary M Dunny
In Enterococcus faecalis, sex pheromone-mediated transfer of antibiotic resistance plasmids can occur under unfavorable conditions, for example, when inducing pheromone concentrations are low and inhibiting pheromone concentrations are high. To better understand this paradox, we adapted fluorescence in situ hybridization chain reaction (HCR) methodology for simultaneous quantification of multiple E. faecalis transcripts at the single cell level. We present direct evidence for variability in the minimum period, maximum response level, and duration of response of individual cells to a specific inducing condition...
July 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28664386/novel-therapies-for-acute-myeloid-leukemia-are-we-finally-breaking-the-deadlock
#20
REVIEW
Maximilian Stahl, Benjamin Y Lu, Tae Kon Kim, Amer M Zeidan
Acute myeloid leukemia (AML) is one of the best studied malignancies, and significant progress has been made in understanding the clinical implications of its disease biology. Unfortunately, drug development has not kept pace, as the '7+3' induction regimen remains the standard of care for patients fit for intensive therapy 40 years after its first use. Temporal improvements in overall survival were mostly confined to younger patients and driven by improvements in supportive care and use of hematopoietic stem cell transplantation...
August 2017: Targeted Oncology
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