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https://www.readbyqxmd.com/read/28350994/the-reduction-of-chlorella-vulgaris-concentrations-through-uv-c-radiation-treatments-a-nature-based-solution-nbs
#1
Erika S Chen, Thomas B Bridgeman
Algal blooms have become a pressing issue in inland freshwater systems on local and global scales. A plausible approach to reducing algae without the use of chemical/biological agents is through the use of UV-C radiation from lamps potentially powered by in situ solar panels to eliminate algae. Yet, the quantitative scientific base has not been established. Our objective is to conduct a controlled experiment to quantify the effectiveness of UV-C radiation on the reduction of Chlorella vulgaris, a common algal species in the Great Lakes region...
March 25, 2017: Environmental Research
https://www.readbyqxmd.com/read/28350815/-the-evil-virus-cell-students-knowledge-and-beliefs-about-viruses
#2
Uwe K Simon, Sonja M Enzinger, Andreas Fink
Education about virus biology at school is of pivotal interest to raise public awareness concerning means of disease transmission and, thus, methods to prevent infection, and to reduce unnecessary antibiotic treatment due to patient pressure on physicians in case of viral diseases such as influenza. This study aimed at making visible the knowledge of Austrian high school and university students with respect to virus biology, virus structure and health-education issues. The data presented here stem from comprehensive questionnaire analyses, including the task to draw a virus, from a cross-sectional study with 133 grade 7 and 199 grade 10 high school students, and 133 first-year biology and 181 first-year non-biology university students...
2017: PloS One
https://www.readbyqxmd.com/read/28350811/sampling-and-detection-of-airborne-influenza-virus-towards-point-of-care-applications
#3
Laila Ladhani, Gaspard Pardon, Hanne Meeuws, Liesbeth van Wesenbeeck, Kristiane Schmidt, Lieven Stuyver, Wouter van der Wijngaart
Airborne transmission of the influenza virus contributes significantly to the spread of this infectious pathogen, particularly over large distances when carried by aerosol droplets with long survival times. Efficient sampling of virus-loaded aerosol in combination with a low limit of detection of the collected virus could enable rapid and early detection of airborne influenza virus at the point-of-care setting. Here, we demonstrate a successful sampling and detection of airborne influenza virus using a system specifically developed for such applications...
2017: PloS One
https://www.readbyqxmd.com/read/28350496/fundamental-theorems-of-evolution
#4
David C Queller
Evolutionary biology is undergirded by an extensive and impressive set of mathematical models. Yet only one result, Fisher's theorem about selection and fitness, is generally accorded the status of a fundamental theorem. I argue that although its fundamental status is justified by its simplicity and scope, there are additional results that seem similarly fundamental. I suggest that the most fundamental theorem of evolution is the Price equation, both because of its simplicity and broad scope and because it can be used to derive four other familiar results that are similarly fundamental: Fisher's average-excess equation, Robertson's secondary theorem of natural selection, the breeder's equation, and Fisher's fundamental theorem...
April 2017: American Naturalist
https://www.readbyqxmd.com/read/28346882/determination-of-prodrug-treosulfan-and-its-biologically-active-monoepoxide-in-rat-plasma-liver-lungs-kidneys-muscle-and-brain-by-hplc-esi-ms-ms-method
#5
Michał Romański, Anna Kasprzyk, Artur Teżyk, Agnieszka Widerowska, Czesław Żaba, Franciszek Główka
A prodrug treosulfan (TREO) is currently investigated in clinical trials for conditioning prior to hematopoietic stem cell transplantation. Bioanalysis of TREO and its active derivatives, monoepoxide (S,S-EBDM) and diepoxide, in plasma and urine underlay the pharmacokinetic studies of these compounds but cannot explain an organ pharmacological action or toxicity. Recently, distribution of TREO and S,S-EBDM into brain, cerebrospinal fluid, and aqueous humor of the eye has been investigated in animal models and the obtained results presented clinical relevance...
March 18, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28346470/relationship-of-microbial-communities-and-suppressiveness-of-trichoderma-fortified-composts-for-pepper-seedlings-infected-by-phytophthora-nicotianae
#6
Margarita Ros, Iulia Raut, Ana Belén Santisima-Trinidad, Jose Antonio Pascual
The understanding of the dynamic of soil-borne diseases is related to the microbial composition of the rhizosphere which is the key to progress in the field of biological control. Trichoderma spp. is commonly used as a biological control agent. The use of next generation sequencing approaches and quantitative PCR are two successful approaches to assess the effect of using compost as substrate fortified with two Trichoderma strains (Trichoderma harzianum or Trichoderma asperellum) on bacterial and fungal communities in pepper rhizosphere infected with Phytophthora nicotianae...
2017: PloS One
https://www.readbyqxmd.com/read/28345879/vibrational-probes-from-small-molecule-solvatochromism-theory-and-experiments-to-applications-in-complex-systems
#7
Bartosz Błasiak, Casey H Londergan, Lauren J Webb, Minhaeng Cho
The vibrational frequency of a chosen normal mode is one of the most accurately measurable spectroscopic properties of molecules in condensed phases. Accordingly, infrared absorption and Raman scattering spectroscopy have provided valuable information on both distributions and ensemble-average values of molecular vibrational frequencies, and these frequencies are now routinely used to investigate structure, conformation, and even absolute configuration of chemical and biological molecules of interest. Recent advancements in coherent time-domain nonlinear vibrational spectroscopy have allowed the study of heterogeneous distributions of local structures and thermally driven ultrafast fluctuations of vibrational frequencies...
March 27, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28345609/environmental-dna-in-subterranean-biology-range-extension-and-taxonomic-implications-for-proteus
#8
Špela Gorički, David Stanković, Aleš Snoj, Matjaž Kuntner, William R Jeffery, Peter Trontelj, Miloš Pavićević, Zlatko Grizelj, Magdalena Năpăruş-Aljančič, Gregor Aljančič
Europe's obligate cave-dwelling amphibian Proteus anguinus inhabits subterranean waters of the north-western Balkan Peninsula. Because only fragments of its habitat are accessible to humans, this endangered salamander's exact distribution has been difficult to establish. Here we introduce a quantitative real time polymerase chain reaction-based environmental DNA (eDNA) approach to detect the presence of Proteus using water samples collected from karst springs, wells or caves. In a survey conducted along the southern limit of its known range, we established a likely presence of Proteus at seven new sites, extending its range to Montenegro...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345454/genome-wide-profiling-of-micro-rna-expression-in-gefitinib-resistant-human-lung-adenocarcinoma-using-microarray-for-the-identification-of-mir-149-5p-modulation
#9
Yong Hu, Xiaobing Qin, Dali Yan, Haixia Cao, Leilei Zhou, Fan Fan, Jialan Zang, Jie Ni, Xiaoyue Xu, Huanhuan Sha, Siwen Liu, Shaorong Yu, Jianzhong Wu, Rong Ma, Jifeng Feng
To understand the mechanism involved in gefitinib resistance, we established gefitinib-resistant human HCC827/GR-8-1 cell line from the parental HCC827 cell line. We compared the micro-RNA expression profiles of the HCC827 cells HCC827/GR-8-1 using Agilent micro-RNA microarrays. The micro-RNAs, such as the miR-149-5p, were up- or downregulated and associated with acquired gefitinib resistance. Quantitative real-time polymerase chain reaction was then performed to verify the expression patterns of different micro-RNAs...
March 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28344110/toward-a-systematic-exploration-of-nano-bio-interactions
#10
REVIEW
Xue Bai, Fang Liu, Yin Liu, Cong Li, Shenqing Wang, Hongyu Zhou, Wenyi Wang, Hao Zhu, Dave Winkler, Bing Yan
Many studies of nanomaterials make non-systematic alterations of nanoparticle physicochemical properties. Given the immense size of the property space for nanomaterials, such approaches are not very useful in elucidating fundamental relationships between inherent physicochemical properties of these materials and their interactions with, and effects on, biological systems. Data driven artificial intelligence methods such as machine learning algorithms have proven highly effective in generating models with good predictivity and some degree of interpretability...
March 24, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28343871/over-expression-of-circrna_100876-in-non-small-cell-lung-cancer-and-its-prognostic-value
#11
Jun-Tao Yao, Shu-Hong Zhao, Qiu-Ping Liu, Mo-Qi Lv, Dang-Xia Zhou, Zi-Jun Liao, Ke-Jun Nan
Circular RNAs (circRNAs) are a novel type of endogenous RNAs featuring stable structure and high tissue-specific expression. Recently, accumulating evidence has revealed that aberrant circRNAs expression plays important roles in carcinogenesis and tumor progression. However, the expression pattern and biological function of circRNAs in non small cell lung cancer (NSCLC) remain largely unknown. Therefore, the purpose of this study was to clarify the possible role of one of typical circRNAs, circRNA_100876 in NSCLC and to define its prognostic value in NSCLC...
February 22, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28343672/effect-of-titanium-and-zirconia-dental-implant-abutments-on-a-cultivable-polymicrobial-saliva-community
#12
Erica D de Avila, Carlos Eduardo Vergani, Francisco A Mollo Junior, Miguel Jafelicci Junior, Wenyuan Shi, Renate Lux
STATEMENT OF PROBLEM: Periimplantitis is considered the most important biological complication responsible for late implant failure. The physical chemical properties intrinsic to each material can affect the first step to biofilm development and is an important precursor to the adaptive behavior of pathogenic bacteria species. PURPOSE: The purpose of this in vitro study was to evaluate the effect of 2 commercially available implant abutment materials on the adhesion phase and biofilm formation...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28343571/a-method-to-transform-a-variable-thermal-regime-to-a-physiologically-equivalent-effective-temperature
#13
Charles Mitz, Christopher Thome, Jeroen Thompson, Richard G Manzon, Joanna Y Wilson, Douglas R Boreham
We present a method to characterize variable thermal regimes in terms of an equivalent or effective temperature. Our method is based on a first order exponential transformation of a time series of temperatures to yield an exponentially-weighted mean temperature characteristic of the regime and independent of any particular species or end point. The resulting effective temperature or exponential mean, Te¯, offers an improved method for summarizing mean temperature where biological response scales exponentially to temperature...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28343073/breviscapine-confers-a-neuroprotective-efficacy-against-transient-focal-cerebral-ischemia-by-attenuating-neuronal-and-astrocytic-autophagy-in-the-penumbra
#14
Zhang Pengyue, Guo Tao, He Hongyun, Yang Liqiang, Deng Yihao
Breviscapine is a flavonoid derived from a traditional Chinese herb Erigerin breviscapus (Vant.) Hand-Mazz, and has been extensively used in clinical treatment for cerebral stroke in China, but the underlying pharmacological mechanisms are still unclear. In present study, we investigated whether breviscapine could confer a neuroprotection against cerebral ischemia injury by targeting autophagy mechanisms. A cerebral stroke model in Sprague-Dawley rats was prepared by middle cerebral artery occlusion (MCAO), rats were then randomly divided into 5 groups: MCAO+Bre group, rats were treated with breviscapine; MCAO+Tat-Beclin-1 group, animals were administrated with specific autophagy inducer Tat-Beclin-1; MCAO+Bre+Tat-Beclin-1 group, rats were treated with both breviscapine and Tat-Beclin-1, MCAO+saline group, rats received the same volume of physiological saline, and Sham surgery group...
March 23, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28341462/asthma-management-in-a-specialist-setting-results-of-an-italian-respiratory-society-survey
#15
Fulvio Braido, Baiardini Ilaria, Pietro Alleri, Elena Bacci, Carlo Barbetta, Michela Bellocchia, Alida Benfante, Francesco Blasi, Caterina Bucca, Maria Teresa Busceti, Stefano Centanni, Maria Cristina Colanardi, Marco Contoli, Angelo Corsico, Maria D 'Amato, Fabiano Di Marco, Dottorini Marco, Marta Ferrari, Giovanni Florio, Alessandro Giuseppe Fois, Maria Pia Foschino Barbaro, Garuti Silvia, Giuseppe Girbino, Amelia Grosso, Manuela Latorre, Sara Maniscalco, Francesco Mazza, Carlo Mereu, Giorgia Molinengo, Josuel Ora, Pierluigi Paggiaro, Vincenzo Patella, Girolamo Pelaia, Pietro Pirina, Alfio Proietto, Paola Rogliani, Pierachille Santus, Nicola Scichilone, Francesca Simioli, Paolo Solidoro, Silvia Terraneo, Umberto Zuccon, Giorgio Walter Canonica
BACKGROUND: Asthma considerably impairs patients' quality of life and increases healthcare costs. Severity, morbidity, and degree of disease control are the major drivers of its clinical and economic impact. National scientific societies are required to monitor the application of international guidelines and to adopt strategies to improve disease control and better allocate resources. AIM: to provide a detailed picture of the characteristics of asthma patients and modalities of asthma management by specialists in Italy and to develop recommendations for the daily management of asthma in a specialist setting...
March 21, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28341396/beyond-d-arcy-thompson-future-challenges-for-quantitative-biology
#16
REVIEW
Thomas Gregor
The centennial of "On Growth and Form" is a good opportunity to reflect on the progress in the quantitative study of living systems and where we would like to see it heading. The era of the physical sciences being a mere vehicle for tool building for biological investigations is over. The approaches taken nowadays are analogous to those that physical scientists have taken within their respective fields for centuries, only that now they ask them about biological phenomena and function. Here I give a brief reflection on where we are and where we should head next, both from the perspective of the research endeavor as a whole, but also with respect to teaching the next generation of scientists joining the field...
March 21, 2017: Mechanisms of Development
https://www.readbyqxmd.com/read/28341216/effects-of-methimazole-on-drosophila-glucolipid-metabolism-in-vitro-and-in-vivo
#17
Qi Wei, Bo Hu, Yuan Xue, David Kibe Mburu, Xian Tao, Jianya Su
Methimazole (MMI) is an antithyroid agent widely used in the treatment of hyperthyroidism, and metabolized by cytochrome P450 enzymes and flavin-containing monooxygenases in mammals. However, drug overdose and the inadequate detoxification of the metabolite(s) are responsible for hepatocellular damage and organ dysfunction. Depending on the desired properties, Drosophila melanogaster has recently emerged as an ideal model organism for the study of human diseases. Here we investigated the changes in metabolic profiles and mRNA expressions related to glucolipid metabolism in response to treatment with MMI in Drosophila...
March 21, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28340945/plasma-levels-of-apolipoprotein-e-apoe-genotype-and-risk-of-dementia-and-ischemic-heart-disease-a-review
#18
REVIEW
Katrine Laura Rasmussen
Dementia is one of the major causes of disability in later life, and ischemic heart disease is a leading cause of morbidity and mortality. Apolipoprotein E (apoE) plays a pivotal role in lipoprotein metabolism in the brain and in the periphery, and is implicated in both dementia and ischemic heart disease. Peripherally, liver-derived apoE is the main source of plasma apoE. Approximately half of plasma apoE is associated with triglyceride-rich lipoproteins, where apoE serves as the main ligand for the low density lipoprotein (LDL) receptor and the LDL receptor Related Protein (LRP)...
December 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28340769/development-of-a-nano-sio2-based-enzyme-linked-ligand-binding-assay-for-the-determination-of-ibuprofen-in-human-urine
#19
Qian-Long Wang, Jing Xie, Xing-De Li, Li-Sheng Ding, Jian Liang, Pei Luo, Lin-Sen Qing
The application domains of classic enzyme-linked ligand binding assay (ELBA) is relatively narrow due to the high cost and hardly available binding receptor. In here, we described for the first time the possibility of developing a new ELBA based on silica nanoparticles (nano-SiO2) to assess the ibuprofen in human urine. Nano-SiO2 with a large surface area was introduced as stationary phase to improve the analytical performance. In the experiment, a competitively binding procedure with human serum albumin (HSA) was performed between the ibuprofen presented in sample and horseradish peroxidase labeled ibuprofen (HRP-ibuprofen) subsequently added...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340534/raman-spectroscopy-enabled-investigation-of-carbon-nanotubes-quality-upon-dispersion-in-aqueous-environments
#20
Yang Wang, Dzhuliya Vasileva, Silviya P Zustiak, Irma Kuljanishvili
Dispersion of high quality carbon nanotubes (CNTs) in aqueous solutions is of central importance for their potential biological and biomedical applications. Although it is now possible to obtain highly dispersed CNT solutions by means of surfactant assisted processing, organic functionalization, and mechanical mixing, a concern remains about preservation of CNTs' quality during these dispersion procedures. In this report, the authors demonstrate that by employing Raman spectroscopy, one can study changes in CNTs' quality post-dispersion...
March 24, 2017: Biointerphases
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