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https://www.readbyqxmd.com/read/28917178/adaptive-management-in-the-context-of-barriers-in-european-freshwater-ecosystems
#1
Kim Birnie-Gauvin, Jeroen S Tummers, Martyn C Lucas, Kim Aarestrup
Many natural habitats have been modified to accommodate for the presence of humans and their needs. Infrastructures - such as hydroelectric dams, weirs, culverts and bridges - are now a common occurrence in streams and rivers across the world. As a result, freshwater ecosystems have been altered extensively, affecting both biological and geomorphological components of the habitats. Many fish species rely on these freshwater ecosystems to complete their lifecycles, and the presence of barriers has been shown to reduce their ability to migrate and sustain healthy populations...
September 13, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28916768/dynamics-of-necklace-beams-in-nonlinear-colloidal-suspensions
#2
Wiktor Walasik, Salih Z Silahli, Natalia M Litchinitser
Recently, we have predicted that the modulation instability of optical vortex solitons propagating in nonlinear colloidal suspensions with exponential saturable nonlinearity leads to formation of necklace beams (NBs). Here, we investigate the dynamics of NB formation and propagation, and demonstrate a variety of optical beam structures emerging upon vortex beam propagation in engineered nonlinear colloidal medium. In particular, we show that the distance at which the NB is formed depends on the input power of the vortex beam...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28916343/the-role-of-a-new-class-of-long-noncoding-rnas-transcribed-from-ultraconserved-regions-in-cancer
#3
REVIEW
Daniela Terracciano, Sara Terreri, Filomena de Nigris, Valerio Costa, George A Calin, Amelia Cimmino
Ultraconserved regions (UCRs) represent a relatively new class of non-coding genomic sequences highly conserved between human, rat and mouse genomes. These regions can reside within exons of protein-coding genes, despite the vast majority of them localizes within introns or intergenic regions. Several studies have undoubtedly demonstrated that most of these regions are actively transcribed in normal cells/tissues, where they contribute to regulate many cellular processes. Interestingly, these non-coding RNAs exhibit aberrant expression levels in human cancer cells and their expression profiles have been used as prognostic factors in human malignancies, as well as to unambiguously distinguish among distinct cancer types...
September 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28916253/the-place-of-transanal-endoscopic-surgery-in-the-treatment-of-recto-urethral-fistula
#4
X Serra-Aracil, M Labro-Ciurans, L Mora-Lopez, J Muñoz-Rodriguez, R Martos-Calvo, J Prats-López, S Navarro-Soto
OBJECTIVES: To assess the role of TEO/TEM in recto-urethral fistulas (RUF). RUF may appear after radical prostatectomy. Their treatment represents a challenge; many therapies have been proposed, from conservative to aggressive surgical approaches. Transanal endoscopic surgery (TEO/TEM) is a minimally invasive technique to access the site of the RUF to perform repair. METHODS: Observational study with prospective data collection, conducted between September 2006 and December 2015...
September 12, 2017: Urology
https://www.readbyqxmd.com/read/28915859/the-fto-gene-polymorphism-is-associated-with-metabolic-syndrome-risk-in-egyptian-females-a-case-control-study
#5
Mina S Khella, Nadia M Hamdy, Ashraf I Amin, Hala O El-Mesallamy
BACKGROUND: Variations within fat mass and obesity associated (FTO) gene had crosstalk with obesity risk in European and some Asian populations. This study was designed to investigate FTO rs9939609 association with metabolic syndrome (MetS) as well as biochemical parameters as plasma glucose, serum triacylglycerol (TAG), total cholesterol (TC) and transaminases enzymes in Arab female population from Egypt. METHODS: In order to achieve that, FTO gene rs9939609 (A < T) was genotyped using TaqMan SNP Genotyping Assay in a total of 197 females which were enrolled in this study...
September 16, 2017: BMC Medical Genetics
https://www.readbyqxmd.com/read/28915788/morphogenesis-along-the-animal-vegetal-axis-fates-of-primary-quartet-micromere-daughters-in-the-gastropod-crepidula-fornicata
#6
Deirdre C Lyons, Kimberly J Perry, Jonathan Q Henry
BACKGROUND: The Spiralia are a large, morphologically diverse group of protostomes (e.g. molluscs, annelids, nemerteans) that share a homologous mode of early development called spiral cleavage. One of the most highly-conserved features of spiralian development is the contribution of the primary quartet cells, 1a-1d, to the anterior region of the embryo (including the brain, eyes, and the anterior ciliary band, called the prototroch). Yet, very few studies have analyzed the ultimate fates of primary quartet sub-lineages, or examined the morphogenetic events that take place in the anterior region of the embryo...
September 15, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28915712/formation-function-and-exhaustion-of-notochordal-cytoplasmic-vacuoles-within-intervertebral-disc-current-understanding-and-speculation
#7
REVIEW
Feng Wang, Zeng-Xin Gao, Feng Cai, Arjun Sinkemani, Zhi-Yang Xie, Rui Shi, Ji-Nan Wei, Xiao-Tao Wu
Notochord nucleus pulposus cells are characteristic of containing abundant and giant cytoplasmic vacuoles. This review explores the embryonic formation, biological function, and postnatal exhaustion of notochord vacuoles, aiming to characterize the signal network transforming the vacuolated nucleus pulposus cells into the vacuole-less chondrocytic cells. Embryonically, the cytoplasmic vacuoles within vertebrate notochord originate from an evolutionarily conserved vacuolation process during neurulation, which may continue to provide mechanical and signal support in constructing a mammalian intervertebral disc...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915542/comparative-susceptibility-of-two-neotropical-predators-eriopis-connexa-and-chrysoperla-externa-to-acetamiprid-and-pyriproxyfen-short-and-long-term-effects-after-egg-exposure
#8
Federico Rimoldi, Marilina N Fogel, Alicia E Ronco, Marcela I Schneider
Compatibility assessments between selective insecticides and the natural enemies of pests are essential for integrated-pest-management programs. Chrysoperla externa and Eriopis connexa are two principal Neotropical predators of agricultural pests whose conservation in agroecosystems requires a toxicity evaluation of pesticides to minimize the impact on those beneficial insects on the environment. The objective of this work was to evaluate the toxicity of the insecticides pyriproxyfen and acetamiprid on C. externa and E...
September 11, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28913836/female-reproductive-system-morphology-of-crab-eating-fox-cerdocyon-thous-and-cryopreservation-of-genetic-material-for-animal-germplasm-bank-enrichment
#9
L C Machado, K C S Roballo, F S Cury, C E Ambrósio
The sprawl of the urbanization and road network process without building ecological corridors contributes to the high mortality rates and a threat to the population decline of wild species such as the crab-eating fox. A strategy for the ex situ conservation is the study of the reproductive biology of the species and cryopreservation of their genetic heritage through the formation of an animal germplasm bank. This research is in accordance with the principles adopted by Brazilian College of Animal Experimentation...
September 15, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28913687/non-atherosclerotic-vascular-disease-in-women
#10
REVIEW
Lee Joseph, Esther S H Kim
Takayasu arteritis, fibromuscular dysplasia (FMD), spontaneous arterial dissection, Raynaud's phenomenon, and chilblains are vascular conditions that are associated with an increased predisposition in women and are often underdiagnosed. Takayasu arteritis has an incidence rate of 2.6 cases per million individuals per year in the USA and predominantly affects women of childbearing age. HLA-B5 genetic locus is linked with Takayasu arteritis susceptibility. Methods to determine active disease are limiting; currently utilized clinical and imaging findings and laboratory tests are of limited value for this purpose...
September 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28913654/discriminating-cirrnas-from-other-lncrnas-using-a-hierarchical-extreme-learning-machine-h-elm-algorithm-with-feature-selection
#11
Lei Chen, Yu-Hang Zhang, Guohua Huang, Xiaoyong Pan, ShaoPeng Wang, Tao Huang, Yu-Dong Cai
As non-coding RNAs, circular RNAs (cirRNAs) and long non-coding RNAs (lncRNAs) have attracted an increasing amount of attention. They have been confirmed to participate in many biological processes, including playing roles in transcriptional regulation, regulating protein-coding genes, and binding to RNA-associated proteins. Until now, the differences between these two types of non-coding RNAs have not been fully uncovered. It is still quite difficult to detect cirRNAs from other lncRNAs using simple techniques...
September 14, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28911322/sharing-fishers%C3%A2-ethnoecological-knowledge-of-the-european-pilchard-sardina-pilchardus-in-the-westernmost-fishing-community-in-europe
#12
Heitor de Oliveira Braga, Miguel Ângelo Pardal, Ulisses Miranda Azeiteiro
BACKGROUND: With the present difficulties in the conservation of sardines in the North Atlantic, it is important to investigate the local ecological knowledge (LEK) of fishermen about the biology and ecology of these fish. The ethnoecological data of European pilchard provided by local fishermen can be of importance for the management and conservation of this fishery resource. Thus, the present study recorded the ethnoecological knowledge of S. pilchardus in the traditional fishing community of Peniche, Portugal...
September 14, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/28911227/a-fluorescence-assay-for-ribonuclease-h-based-on-non-labeled-substrate-and-dnazyme-assisted-cascade-amplification
#13
Lanbo Wang, Hongyan Zhou, Bin Liu, Chuan Zhao, Jialong Fan, Wei Wang, Chunyi Tong
As a highly conserved damage repair protein, RNase H can specifically hydrolyze RNA in DNA-RNA chimeric strands. DNAzyme, a synthetic single-stranded DNA consisting of binding and catalytic sites, can cleave RNA in the presence of cofactors. In this study, we establish a highly sensitive RNase H assay assisted with DNAzyme's cleavage property. A DNA-RNA chimeric strand, which contains DNAzyme sequences, is used as the hydrolysis substrate of RNase H. The RNase H hydrolysis of the chimeric substrate results in the release of DNAzyme...
September 15, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28911013/invited-commentary-integrating-genomics-and-social-epidemiology-analysis-of-late-life-low-socioeconomic-status-and-the-conserved-transcriptional-response-to-adversity
#14
Daniel W Belsky, Noah Snyder-Mackler
Socially disadvantaged children face increased morbidity and mortality as they age. Understanding mechanisms through which social disadvantage becomes biologically embedded and devising measurements that can track this embedding are critical priorities for research to address social gradients in health. The analysis by Levine et al. (Am J Epidemiol. 2017;186(5):503-509) of genome-wide gene expression in a subsample of US Health and Retirement Study participants suggests important new directions for the field...
September 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28911009/contemporaneous-social-environment-and-the-architecture-of-late-life-gene-expression-profiles
#15
Morgan E Levine, Eileen M Crimmins, David R Weir, Steve W Cole
Environmental or social challenges can stimulate a cascade of coordinated physiological changes in stress response systems. Unfortunately, chronic activation of these adaptations under conditions such as low socioeconomic status (SES) can have negative consequences for long-term health. While there is substantial evidence tying low SES to increased disease risk and reduced life expectancy, the underlying biology remains poorly understood. Using pilot data on 120 older adults from the Health and Retirement Study (United States, 2002-2010), we examined the associations between SES and gene expression levels in adulthood, with particular focus on a gene expression program known as the conserved transcriptional response to adversity...
September 1, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28910812/what-can-be-expected-from-prostate-cancer-biomarkers-a-clinical-perspective
#16
Piotr Zapała, Bartosz Dybowski, Sławomir Poletajew, Piotr Radziszewski
Along with significant advances in prostate cancer biology research, we also observe the rapid development of modern diagnostic tests. New biomarkers are derived to detect disease while it is organ-confined to stratify the risk and to aid clinical decision-making. Majority of these tools have already been validated clinically, but only a few have received premarket clearance and administration approval. Superiority of novel tests is visible not only in improved detection accuracy but predominantly in the assessment of tumour aggressiveness and selection of patients eligible for conservative management...
September 15, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/28910720/study-of-the-influence-of-physical-chemical-and-biological-conditions-that-influence-the-deterioration-and-protection-of-underwater-cultural-heritage
#17
Manuel Bethencourt, Tomás Fernández-Montblanc, Alfredo Izquierdo, Manuel María González-Duarte, Cristian Muñoz-Mas
Two wrecks related to the Battle of Trafalgar (1805) were studied. Following the guidelines of the UNESCO-2001 Convention for the Protection of the Underwater Cultural Heritage, a holistic and interdisciplinary approach based on the development of four of the thirty-six Rules of this international agreement was applied. A non-destructive survey technique was developed to obtain information from the scattered cannons and anchors without altering their condition (Rule 4). The work performed provided information about the origin of both wrecks, the Fougueux and the Bucentaure, two ships of the line of the French Navy, and allowed to characterize the state of conservation at each site without jeopardizing their future conservation in the marine environment...
September 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28910422/a-prolonged-chronological-lifespan-is-an-unexpected-benefit-of-the-psi-prion-in-yeast
#18
Kai Wang, Ronald Melki, Mehdi Kabani
Self-replicating 'proteinaceous infectious particles' or prions are responsible for complex heritable traits in the yeast Saccharomyces cerevisiae. Our current understanding of the biology of yeast prions stems from studies mostly done in the context of actively dividing cells in optimal laboratory growth conditions. Evidence suggest that fungal prions exist in the wild where most cells are in a non-dividing quiescent state, because of imperfect growth conditions, scarcity of nutrients and competition. We know little about the faithful transmission of yeast prions in such conditions and their physiological consequences throughout the lifespan of yeast cells...
2017: PloS One
https://www.readbyqxmd.com/read/28906063/models-of-convergent-extension-during-morphogenesis
#19
REVIEW
Asako Shindo
Convergent extension (CE) is a fundamental and conserved collective cell movement that forms elongated tissues during embryonic development. Thus far, studies have demonstrated two different mechanistic models of collective cell movements during CE. The first, termed the crawling mode, was discovered in the process of notochord formation in Xenopus laevis embryos, and has been the established model of CE for decades. The second model, known as the contraction mode, was originally reported in studies of germband extension in Drosophila melanogaster embryos and was recently demonstrated to be a conserved mechanism of CE among tissues and stages of development across species...
September 14, 2017: Wiley Interdisciplinary Reviews. Developmental Biology
https://www.readbyqxmd.com/read/28904791/brucellosis-in-livestock-and-wildlife-zoonotic-diseases-without-pandemic-potential-in-need-of-innovative-one-health-approaches
#20
Jacques Godfroid
Human brucellosis remains the commonest zoonotic disease worldwide with more than 500 000 new cases annually. Understanding the biology of Brucella infections and the transmission patterns at the wildlife/livestock/human interface is of paramount importance before implementing any brucellosis control or eradication program in animals, even more so should interventions be justified within One Health. In addition to calling for transdisciplinary collaboration, One Health formally aims to conserve the environment and to promote the well-being of animals...
2017: Archives of Public Health, Archives Belges de Santé Publique
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