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https://www.readbyqxmd.com/read/28340380/the-origin-and-evolution-of-the-term-clone
#1
David P Steensma
In biology, the term "clone" is most widely used to designate genetically identical cells or organisms that are asexually descended from a common progenitor. The concept of clonality in hematology-oncology has received much attention in recent years, as the advent of next-generation sequencing platforms has provided new tools for detection of clonal populations in patients, and experiments on primary cells have provided fascinating new insights into the clonal architecture of human malignancies. The term "clone" is used more loosely by the general public to mean any close or identical copy...
March 4, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28340309/analytical-techniques-in-lipidomics-state-of-the-art
#2
Kamil Jurowski, Kamila Kochan, Justyna Walczak, Małgorzata Barańska, Wojciech Piekoszewski, Bogusław Buszewski
Current studies related to lipid identification and determination, or lipidomics in biological samples, are one of the most important issues in modern bioanalytical chemistry. There are many articles dedicated to specific analytical strategies used in lipidomics in various kinds of biological samples. However, in such literature, there is lack of articles dedicated to a comprehensive review of the actual analytical methodologies used in lipidomics. The aim of this article is to characterize the lipidomics methods used in modern bioanalysis according to the methodological point of view: 1) chromatography/separation methods, 2) spectroscopic methods and 3) mass spectrometry and also hyphenated methods...
March 24, 2017: Critical Reviews in Analytical Chemistry
https://www.readbyqxmd.com/read/28334681/fluorescent-proteins-such-as-egfp-lead-to-catalytic-oxidative-stress-in-cells
#3
Douglas Ganini, Fabian Leinisch, Ashutosh Kumar, JinJie Jiang, Erik J Tokar, Christine C Malone, Robert M Petrovich, Ronald P Mason
Fluorescent proteins are an important tool that has become omnipresent in life sciences research. They are frequently used for localization of proteins and monitoring of cells [1,2]. Green fluorescent protein (GFP) was the first and has been the most used fluorescent protein. Enhanced GFP (eGFP) was optimized from wild-type GFP for increased fluorescence yield and improved expression in mammalian systems [3]. Many GFP-like fluorescent proteins have been discovered, optimized or created, such as the red fluorescent protein TagRFP [4]...
March 10, 2017: Redox Biology
https://www.readbyqxmd.com/read/28333392/the-biosynthesis-of-nitrous-oxide-in-the-green-alga-chlamydomonas-reinhardtii
#4
Maxence Plouviez, David Wheeler, Andy Shilton, Michael A Packer, Patricia A McLenachan, Emanuel Sanz-Luque, Francisco Ocaña-Calahorro, Emilio Fernández, Benoit Guieysse
Over the last decades, several studies have reported emissions of nitrous oxide (N2 O) from microalgae cultures and aquatic ecosystems characterized by a high level of algal activity (e.g. eutrophic lakes). As N2 O is a potent greenhouse gas (GHG) and an ozone depleting pollutant, these findings suggest that large scale microalgae cultivation (and possibly, natural eutrophic ecosystems) could have significant environmental impacts. Using the model unicellular microalga Chlamydomonas reinhardtii, this study was conducted to investigate the molecular basis of microalgal N2 O synthesis...
March 23, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28333195/genome-wide-genetic-analyses-highlight-mitogen-activated-protein-kinase-mapk-signaling-in-the-pathogenesis-of-endometriosis
#5
Outi Uimari, Nilufer Rahmioglu, Dale R Nyholt, Katy Vincent, Stacey A Missmer, Christian Becker, Andrew P Morris, Grant W Montgomery, Krina T Zondervan
STUDY QUESTION: Do genome-wide association study (GWAS) data for endometriosis provide insight into novel biological pathways associated with its pathogenesis? SUMMARY ANSWER: GWAS analysis uncovered multiple pathways that are statistically enriched for genetic association signals, analysis of Stage A disease highlighted a novel variant in MAP3K4, while top pathways significantly associated with all endometriosis and Stage A disease included several mitogen-activated protein kinase (MAPK)-related pathways...
February 9, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28330912/statistical-model-specification-and-power-recommendations-on-the-use-of-test-qualified-pooling-in-analysis-of-experimental-data
#6
Nick Colegrave, Graeme D Ruxton
A common approach to the analysis of experimental data across much of the biological sciences is test-qualified pooling. Here non-significant terms are dropped from a statistical model, effectively pooling the variation associated with each removed term with the error term used to test hypotheses (or estimate effect sizes). This pooling is only carried out if statistical testing on the basis of applying that data to a previous more complicated model provides motivation for this model simplification; hence the pooling is test-qualified...
March 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28330277/classical-and-bayesian-predictions-applied-to-bacillus-toxin-production
#7
Karim Ennouri, Rayda Ben Ayed, Maura Mazzarello, Ennio Ottaviani, Fathi Hertelli, Hichem Azzouz
Bacillus thuringiensis is a bacterium with unusual properties that make it useful for pest control in ecoagriculture. It can form a parasporal crystal containing polypeptides (also called delta-endotoxins). These entomopathogenic toxins are made during the stationary phase of the bacterial growth cycle and were initially characterized as an insect pathogen. Nowadays, the use of saturated two-level designs is very popular. This method is especially used in industrial applications where the cost of experiments is expensive...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329028/non-equilibrium-assembly-of-microtubules-from-molecules-to-autonomous-chemical-robots
#8
REVIEW
H Hess, Jennifer L Ross
Biological systems have evolved to harness non-equilibrium processes from the molecular to the macro scale. It is currently a grand challenge of chemistry, materials science, and engineering to understand and mimic biological systems that have the ability to autonomously sense stimuli, process these inputs, and respond by performing mechanical work. New chemical systems are responding to the challenge and form the basis for future responsive, adaptive, and active materials. In this article, we describe a particular biochemical-biomechanical network based on the microtubule cytoskeletal filament - itself a non-equilibrium chemical system...
March 22, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28328315/analysis-of-protein-target-interactions-of-synthetic-mixtures-by-affinity-lc-ms
#9
Prachi Singh, Kalaipriya Madhaiyan, Minh-Dao Duong-Thi, Brian W Dymock, Sten Ohlson
Analysis of interactions between molecules is of fundamental importance in life science research. In this study, we applied weak affinity chromatography, based on high-performance liquid chromatography and mass spectrometry, as a powerful tool for direct analysis of the components of a chemical reaction mixture for their binding to a target protein. As a demonstration of the potential of this method, we analyzed the binding of the compounds of the reaction mixture to the chaperone heat shock protein 90 (Hsp90)...
April 2017: SLAS Discov
https://www.readbyqxmd.com/read/28328309/ibpro-a-novel-short-duration-teaching-course-in-advanced-physics-and-biology-underlying-cancer-radiotherapy
#10
Michael C Joiner, Monica W Tracey, Sara E Kacin, Jay W Burmeister
This article provides a summary and status report of the ongoing advanced education program IBPRO - Integrated course in Biology and Physics of Radiation Oncology. IBPRO is a five-year program funded by NCI. It addresses the recognized deficiency in the number of mentors available who have the required knowledge and skill to provide the teaching and training that is required for future radiation oncologists and researchers in radiation sciences. Each year, IBPRO brings together 50 attendees typically at assistant professor level and upwards, who are already qualified/certified radiation oncologists, medical physicists or biologists...
March 22, 2017: Radiation Research
https://www.readbyqxmd.com/read/28327567/quantum-locality-in-game-strategy
#11
Carlos A Melo-Luna, Cristian E Susa, Andrés F Ducuara, Astrid Barreiro, John H Reina
Game theory is a well established branch of mathematics whose formalism has a vast range of applications from the social sciences, biology, to economics. Motivated by quantum information science, there has been a leap in the formulation of novel game strategies that lead to new (quantum Nash) equilibrium points whereby players in some classical games are always outperformed if sharing and processing joint information ruled by the laws of quantum physics is allowed. We show that, for a bipartite non zero-sum game, input local quantum correlations, and separable states in particular, suffice to achieve an advantage over any strategy that uses classical resources, thus dispensing with quantum nonlocality, entanglement, or even discord between the players' input states...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28326228/innovations-from-the-ivory-tower-wilhelm-barthlott-and-the-paradigm-shift-in-surface-science
#12
Christoph Neinhuis
This article is mainly about borders that have tremendous influence on our daily life, although many of them exist and act mostly unrecognized. In this article the first objective will be to address more generally the relation between university and society or industry, borders within universities, borders in thinking and the huge amount of misunderstandings and losses resulting from these obvious or hidden borders. In the second part and in more detail, the article will highlight the impact of the research conducted by Wilhelm Barthlott throughout his scientific career during which not only one border was removed, shifted or became more penetrable...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28325940/one-pot-synthesis-of-four-coordinate-boron-iii-complexes-by-the-ligand-promoted-organic-group-migration-between-boronic-acids
#13
Venkata S Sadu, Hye-Rin Bin, Do-Min Lee, Kee-In Lee
Multidisciplinary applications of four-coordinate boron(III) complexes make them very attractive and challenging research field in chemistry, biology and material sciences. The dual role played by boron atom in stabilising the chelate ligand and enhancing the π-conjugation makes them very useful as luminescent materials for organic electronics and photonics, and sensing and imaging probes for biomedical purposes. The conventional methods involve the use of diarylborinic acids or anhydrides and triaryl boranes, which are made from organometallic reagents...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28324948/association-between-visuomotor-adaptation-and-mathematics-skills
#14
M N Anwar, R Rehman, U Hassan
Learning a new motor skill involves multiple cognitive aspects such as attention, planning, prioritizing, execution, and error correction. In current study, we examined whether the students opted for pure mathematics at their undergraduate level have enhanced motor skills as compared to those pursuing biological sciences at the same level of education. A total of twenty subjects participated in a visuomotor adaptation task. The results showed that the overall movement related errors in subjects with mathematics background were lower than the biosciences students (p = 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324134/-between-psyche-and-brain-state-of-the-art-in-psychiatry
#15
T Fuchs
Since its development around 1800 psychiatry has been oscillating between the poles of the sciences and the humanities, being directed towards subjective experience on the one hand and towards the neural substrate on the other hand. Today, this dualism seems to have been overcome by a naturalism, which identifies subjective experience with neural processes, according to Griesinger's frequently quoted statement "mental diseases are brain diseases". The progress achieved by the neurobiological paradigm on the level of a fundamental science is in contrast to the tendency to isolate mental illnesses from the patients' social relationships and to neglect subjectivity and intersubjectivity in their explanation...
March 21, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28323912/sex-hormones-and-cardiometabolic-health-role-of-estrogen-and-estrogen-receptors
#16
Deborah Clegg, Andrea L Hevener, Kerrie L Moreau, Eugenia Morselli, Alfredo Criollo, Rachael E Van Pelt, Victoria J Vieira-Potter
With increased life expectancy, women will spend over three decades of life post-menopause. The menopausal transition increases susceptibility to metabolic diseases such as obesity, diabetes, cardiovascular disease, and cancer. Thus, it is more important than ever to develop effective hormonal treatment strategies to protect aging women. Understanding the role of estrogens, and their biological actions mediated by estrogen receptors (ERs), in the regulation of cardiometabolic health is of paramount importance to discover novel targeted therapeutics...
February 17, 2017: Endocrinology
https://www.readbyqxmd.com/read/28322920/stem-cell-transplantation-therapy-for-multifaceted-therapeutic-benefits-after-stroke
#17
REVIEW
Ling Wei, Zheng Z Wei, Michael Qize Jiang, Osama Mohamad, Shan Ping Yu
One of the exciting advances in modern medicine and life science is cell-based neurovascular regeneration of damaged brain tissues and repair of neuronal structures. The progress in stem cell biology and creation of adult induced pluripotent stem (iPS) cells has significantly improved basic and pre-clinical research in disease mechanisms and generated enthusiasm for potential applications in the treatment of central nervous system (CNS) diseases including stroke. Endogenous neural stem cells and cultured stem cells are capable of self-renewal and give rise to virtually all types of cells essential for the makeup of neuronal structures...
March 16, 2017: Progress in Neurobiology
https://www.readbyqxmd.com/read/28322278/early-life-adversity-and-telomere-length-a-meta-analysis
#18
K K Ridout, M Levandowski, S J Ridout, L Gantz, K Goonan, D Palermo, L H Price, A R Tyrka
Early adversity, in the form of abuse, neglect, socioeconomic status and other adverse experiences, is associated with poor physical and mental health outcomes. To understand the biologic mechanisms underlying these associations, studies have evaluated the relationship between early adversity and telomere length, a marker of cellular senescence. Such results have varied in regard to the size and significance of this relationship. Using meta-analytic techniques, we aimed to clarify the relationship between early adversity and telomere length while exploring factors affecting the association, including adversity type, timing and study design...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28322169/potential-therapeutic-strategies-of-regenerative-medicine-for-renal-failure
#19
Monica Maribel Mata-Miranda, Raul Jacobo Delgado-Macuil, Marlon Rojas-Lopez, Ricardo Martinez-Flores, Gustavo Jesus Vazquez-Zapien
Kidney diseases are a public health problem worldwide; the mortality rate is between 50 and 80%. Available therapies include replacement function by dialysis or transplant, associated with a high morbidity and mortality; kidney transplantation is limited by the shortage of donor organs, immune rejection and lifelong treatment with immunosuppressive. Likewise, none of these treatments compensates all kidney functions. There is a great concern in developing more effective therapies with the ability to replace the wide range of renal functions, so that, new researches on developing therapeutic strategies have focused on regenerative medicine, science that includes artificial creation of tissues and organs, in order to repair or replace a tissue or organ function...
March 17, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28322094/diabetes-mellitus-and-the-risk-of-aneurysmal-subarachnoid-haemorrhage-a-systematic-review-and-meta-analysis-of-current-evidence
#20
Xi-Yang Yao, Cai-Qi Jiang, Gen-Lai Jia, Gang Chen
Objective This systematic review aimed to define the relationship between diabetes mellitus (DM) and the risk of aneurysmal subarachnoid haemorrhage (aSAH). Methods Studies associated with DM and aSAH published until March 2016 were retrieved from Pubmed, Embase, Web of Science, and Cochrane Library databases. A random-effects model was used to calculate the relative risks (RRs) with 95% confidence intervals (CIs). Results Eighteen observational studies were retrieved. The overall RRs for DM and aSAH were RRs = 0...
December 2016: Journal of International Medical Research
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