539,742 results match your criteria Evolution & Development [Journal]


Functional expansion of a TCA cycle operon mRNA by a 3' end-derived small RNA.

Nucleic Acids Res 2018 Dec 12. Epub 2018 Dec 12.

RNA Biology Group, Institute for Molecular Infection Biology, University of Würzburg, D-97080 Würzburg, Germany.

Global RNA profiling studies in bacteria have predicted the existence of many of small noncoding RNAs (sRNAs) that are processed off mRNA 3' ends to regulate other mRNAs via the RNA chaperones Hfq and ProQ. Here, we present targets of SdhX (RybD), an Hfq-dependent sRNA that is generated by RNase E mediated 3' processing of the ∼10 000-nt mRNA of the TCA cycle operon sdhCDAB-sucABCD in enteric bacteria. An in silico search predicted ackA mRNA, which encodes acetate kinase, as a conserved primary target of SdhX. Read More

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December 2018

Galapagos Islands Endemic Vertebrates: A Population Genetics Perspective.

Authors:
Philip W Hedrick

J Hered 2018 Dec 12. Epub 2018 Dec 12.

School of Life Sciences, Arizona State University, Tempe, AZ.

The organisms of the Galapagos Islands played a central role in the development of the theory of evolution by Charles Darwin. Examination of the population genetics factors of many of these organisms with modern molecular methods have expanded our understanding of their evolution. Here I provide a perspective on how selection, gene flow, genetic drift, mutation, and inbreeding have contributed to the evolution of six of the iconic Galapagos species; flightless cormorant, pink iguana, marine iguana, Galapagos hawk, giant tortoises, and Darwin's finches. Read More

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December 2018

Characterization of the Inner and Outer Fiber Layers in the Developing Cerebral Cortex of Gyrencephalic Ferrets.

Cereb Cortex 2018 Dec 12. Epub 2018 Dec 12.

Department of Medical Neuroscience, Graduate School of Medical Sciences, Kanazawa University, Ishikawa, Japan.

Changes in the cerebral cortex of mammals during evolution have been of great interest. Ferrets, monkeys, and humans have more developed cerebral cortices compared with mice. Although the features of progenitors in the developing cortices of these animals have been intensively investigated, those of the fiber layers are still largely elusive. Read More

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December 2018

ModL: exploring and restoring regularity when testing for positive selection.

Bioinformatics 2018 Dec 12. Epub 2018 Dec 12.

Department of Mathematics and Statistics, Dalhousie University, Halifax, NS, Canada.

Motivation: Likelihood ratio tests are commonly used to test for positive selection acting on proteins. They are usually applied with thresholds for declaring a protein under positive selection determined from a chi-square or mixture of chi-square distributions. While it is known that such distributions are not strictly justified due to the statistical irregularity of the problem, the hope has been that the resulting tests are conservative and do not lose much power in comparison with the same test using the unknown, correct threshold. Read More

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December 2018

Widespread co-occurrence of multiple ploidy levels in fragile ferns (Cystopteris fragilis complex; Cystopteridaceae) probably stems from similar ecology of cytotypes, their efficient dispersal and inter-ploidy hybridization.

Ann Bot 2018 Dec 12. Epub 2018 Dec 12.

Department of Botany, Faculty of Science, University of South Bohemia, Branišovská, Ceské Budejovice, Czech Republic.

Background And Aims: Polyploidy has played an important role in the evolution of ferns. However, the dearth of data on cytotype diversity, cytotype distribution patterns and ecology in ferns is striking in comparison with angiosperms and prevents an assessment of whether cytotype coexistence and its mechanisms show similar patterns in both plant groups. Here, an attempt to fill this gap was made using the ploidy-variable and widely distributed Cystopteris fragilis complex. Read More

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December 2018

Functionally distinct assembly of vascular plants colonizing alpine cushions suggests their vulnerability to climate change.

Ann Bot 2018 Dec 12. Epub 2018 Dec 12.

Institute of Botany, The Czech Academy of Sciences, Průhonice, Czech Republic.

Background And Aims: Alpine cushion plants can initially facilitate other species during ecological succession, but later on can be negatively affected by their development, especially when beneficiaries possess traits allowing them to overrun their host. This can be reinforced by accelerated warming favouring competitively strong species over cold-adapted cushion specialists. However, little empirical research has addressed the trait-based mechanisms of these interactions. Read More

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December 2018

Sequential transmission electron microscopy observation of the shape change of gold nanorods under pulsed laser light irradiation.

Microscopy (Oxf) 2018 Dec 12. Epub 2018 Dec 12.

Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan.

In situ sequential high-resolution observations were performed on gold nanorods under near-infra-red pulsed laser irradiation using a high-voltage electron microscope attached to a pulsed laser illumination system. The original nanorods were single crystals; the longer axes were oriented along [001]. Under laser light irradiation with λ = 1064 nm with an average intensity per pulse of 980 or 490 J/m2, the shape of the nanorods changed from rod to barrel surrounded by the {111} and {001} facets, while the original single-crystalline structure was maintained. Read More

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December 2018

V2-Directed Vaccine-like Antibodies from HIV-1 Infection Identify an Additional K169-Binding Light Chain Motif with Broad ADCC Activity.

Cell Rep 2018 Dec;25(11):3123-3135.e6

National Institute for Communicable Diseases of the National Health Laboratory Service, Johannesburg 2131, South Africa; Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2000, South Africa; Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu Natal, Durban 4041, South Africa. Electronic address:

Antibodies that bind residue K169 in the V2 region of the HIV-1 envelope correlated with reduced risk of infection in the RV144 vaccine trial but were restricted to two ED-motif-encoding light chain genes. Here, we identify an HIV-infected donor with high-titer V2 peptide-binding antibodies and isolate two antibody lineages (CAP228-16H/19F and CAP228-3D) that mediate potent antibody-dependent cell-mediated cytotoxicity (ADCC). Both lineages use the IGHV5-51 heavy chain germline gene, similar to the RV144 antibody CH58, but one lineage (CAP228-16H/19F) uses a light chain without the ED motif. Read More

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December 2018

3D Quantification of the Facet Evolution of Pt Nanoparticles in a Variable Gaseous Environment.

Nano Lett 2018 Dec 12. Epub 2018 Dec 12.

Pt nanoparticles play an essential role in a wide variety of catalytic reactions. The activity of the particles strongly depends on their three-dimensional (3D) structure and exposed facets, as well as on the reactive environment. High resolution electron microscopy has often been used to characterize nanoparticle catalysts, but unfortunately, most observations so far have been either performed in vacuum and/or using conventional (2D) in situ microscopy. Read More

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December 2018

Characterization of grapevine leafroll-associated virus 3 genetic variants and application towards RT-qPCR assay design.

PLoS One 2018 12;13(12):e0208862. Epub 2018 Dec 12.

Department of Plant Pathology, University of California-Davis, Davis, California, United States of America.

Grapevine leafroll-associated virus 3 (GLRaV-3) is the most widely prevalent and economically important of the complex of RNA viruses associated with grapevine leafroll disease (GLD). Phylogenetic studies have grouped GLRaV-3 isolates into nine different monophyletic groups and four supergroups, making GLRaV-3 a genetically highly diverse virus species. In addition, new divergent variants have been discovered recently around the world. Read More

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December 2018

Disruption of the microbiota affects physiological and evolutionary aspects of insecticide resistance in the German cockroach, an important urban pest.

PLoS One 2018 12;13(12):e0207985. Epub 2018 Dec 12.

Apex Bait Technologies, Inc., Santa Clara, California, United States of America.

The German cockroach, Blatella germanica, is a common pest in urban environments and is among the most resilient insects in the world. The remarkable ability of the German cockroach to develop resistance when exposed to toxic insecticides is a prime example of adaptive evolution and makes control of this insect an ongoing struggle. Like many other organisms, the German cockroach is host to a diverse community of symbiotic microbes that play important roles in its physiology. Read More

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December 2018

Regional paleoclimates and local consequences: Integrating GIS analysis of diachronic settlement patterns and process-based agroecosystem modeling of potential agricultural productivity in Provence (France).

PLoS One 2018 12;13(12):e0207622. Epub 2018 Dec 12.

Schools of Sustainability and Human Evolution and Social Change, Arizona State University, Tempe, Arizona, United States of America.

Holocene climate variability in the Mediterranean Basin is often cited as a potential driver of societal change, but the mechanisms of this putative influence are generally little explored. In this paper we integrate two tools-agro-ecosystem modeling of potential agricultural yields and spatial analysis of archaeological settlement pattern data-in order to examine the human consequences of past climatic changes. Focusing on a case study in Provence (France), we adapt an agro-ecosystem model to the modeling of potential agricultural productivity during the Holocene. Read More

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December 2018

New skeletal material sheds light on the palaeobiology of the Pleistocene marsupial carnivore, Thylacoleo carnifex.

PLoS One 2018 12;13(12):e0208020. Epub 2018 Dec 12.

Ecology and Evolution, College of Science and Engineering, Flinders University, Adelaide, South Australia, Australia.

The extinct marsupial 'lion' Thylacoleo carnifex was Australia's largest mammalian carnivore. Despite being the topic of more discussion than any other extinct Australian marsupial (excepting perhaps the Thylacine), basic aspects of its palaeobiology, including its locomotory repertoire, remain poorly understood. Recent discoveries allowed the first reconstruction of an entire skeleton including the first complete tail and hitherto-unrecognised clavicles. Read More

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December 2018

Decomposing the subclonal structure of tumors with two-way mixture models on copy number aberrations.

PLoS One 2018 12;13(12):e0206579. Epub 2018 Dec 12.

Institute of Statistics, National Tsing Hua University, Hsinchu, Taiwan, R.O.C.

Multistage tumorigenesis is a dynamic process characterized by the accumulation of mutations. Thus, a tumor mass is composed of genetically divergent cell subclones. With the advancement of next-generation sequencing (NGS), mathematical models have been recently developed to decompose tumor subclonal architecture from a collective genome sequencing data. Read More

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December 2018

[Primary gastric choriocarcinoma: case report].

Rev Gastroenterol Peru 2018 Jul-Sep;38(3):297-300

Hospital Guillermo Kaelin de la Fuente. Lima, Perú; Universidad San Ignacio de Loyola, Lima, Perú.

Primary gastric choriocarcinoma (PGC) is an extremely rare and highly invasive tumor with rapid hematogenous spread. We present the case of a 57-year-old female patient who started with hematemesis and progressive episodes of melena, weight loss and epigastralgia. It is derived from the National Institute of Neoplastic Diseases where gastroscopy and biopsy are performed. Read More

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December 2018

[Peritonitis treated by laparoscopy as an effective treatment].

Rev Gastroenterol Peru 2018 Jul-Sep;38(3):261-264

Universidad Cooperativa de Colombia. Pasto, Nariño, Colombia.

Peritonitis is one of the main complications of abdominal emergencies. Laparoscopy serves both for the diagnostic and therapeutic management of the acute abdomen; in expert hands the morbimortality of this method is minimal.

Objective: The objective is to verify the efficacy of laparoscopy in patients with secondary peritonitis performing a single surgery without the need for reinterventions, ensuring the least damage of the abdominal wall, avoiding laparotomy. Read More

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December 2018

Gaussian Process Surrogate Models for the CMA Evolution Strategy.

Evol Comput 2018 Dec 12:1-30. Epub 2018 Dec 12.

Institute of Computer Science, Czech Academy of Sciences, Pod Vodárenskou věží 2, 182 07 Prague, Czech Republic

This article deals with Gaussian process surrogate models for the Covariance Matrix Adaptation Evolutionary Strategy (CMA-ES)-several already existing and two by the authors recently proposed models are presented. The work discusses different variants of surrogate model exploitation and focuses on the benefits of employing the Gaussian process uncertainty prediction, especially during the selection of points for the evaluation with a surrogate model. The experimental part of the paper thoroughly compares and evaluates the five presented Gaussian process surrogate and six other state-of-the-art optimizers on the COCO benchmarks. Read More

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December 2018
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Phys-MAPS: a programmatic physiology assessment for introductory and advanced undergraduates.

Adv Physiol Educ 2019 Mar;43(1):15-27

Molecular, Cellular, and Developmental Biology, University of Colorado-Boulder , Boulder, Colorado.

We describe the development of a new, freely available, online, programmatic-level assessment tool, Measuring Achievement and Progress in Science in Physiology, or Phys-MAPS ( http://cperl.lassp.cornell. Read More

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Ultra-Small Abundant Metal-Based Clusters as Oxygen-Evolving Catalysts.

J Am Chem Soc 2018 Dec 12. Epub 2018 Dec 12.

The oxygen evolution reaction is a crucial step in water electrolysis to develop clean and renewable energy. Although noble metal-based catalysts have demonstrated high activity for oxygen evolution reaction, their application have been limited by their high costs and low availability. Here we report the use of a molecule-to-cluster strategy to prepare ultra-small trimetallic clusters by using polyoxometalate molecule as precursors. Read More

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December 2018

Approche centrée sur le patient et nouvelle gestion publique : confluence et paradoxe.

Sante Publique 2018 Oct;30(4):517-526

The search for efficiency and concentration on patient needs and satisfaction are at the topic of current conceptions in terms of the quality and organization of health services. There is indeed a relative consolidation of organizational approaches called Patient-Centered Care (e.g. Read More

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October 2018

[Aim: By means of a personalized consultation with a professional, the “Consultations Jeunes Consommateurs” (CJC) provide the opportunity to young people and their family to take stock of the consumption level and a potential addiction. A mass-media promotion campaign of this service was released twice in 2015. This article aims to evaluate the impact of this campaign on the visibility of the CJC among adolescents’ parents and on the access to CJC.Methods: Three sources were used: 1/ a study with three independent phases (before the campaign, after the first release, after the second one) by phone with 500, 500 and 531 parents and adolescents in order to evaluate the impact on the CJC visibility among the targets, 2/ the request data from the help line and web service (Drogues Info Service), connected to the campaign, to observe the evolution of profiles and numbers, 3/ a study of the CJC, gathering information from 3747 consultations, to compare profiles of consultants who came thanks to the campaign or not.Results: Before the campaign, 15.98% of parents had already heard of the CJC. After the releases, this part was unchanged among parents non-exposed to the campaign and greater than 60% among exposed parents. The other sources showed a greater implication of parents and a diversification of consultations’ reasons.Conclusion].

Sante Publique 2018 Oct;30(4):465-475

Aim: By means of a personalized consultation with a professional, the ?Consultations Jeunes Consommateurs? (CJC) provide the opportunity to young people and their family to take stock of the consumption level and a potential addiction. A mass-media promotion campaign of this service was released twice in 2015. This article aims to evaluate the impact of this campaign on the visibility of the CJC among adolescents' parents and on the access to CJC. Read More

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October 2018

Electroconvulsive therapy: historical construction of nursing care (1989-2002).

Rev Bras Enferm 2018 ;71(suppl 6):2743-2750

Universidade Federal do Rio de Janeiro, Anna Nery Nursing School. Rio de Janeiro, Rio de Janeiro, Brazil.

Objective: to describe the nursing care performed by the nursing team to the person with mental disorder submitted to ECT and to analyze the implications of the Psychiatric Reform in this care.

Method: socio-historical study, which uses the Thematic Oral History method.

Results: the nursing team is present in a continuous way in the monitoring of people submitted to ECT, performing care before, during and after the same, as well as visualizing the evolution of the technique and also of nursing care itself, however, does not recognize the Psychiatric Reform as agent for this change. Read More

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January 2018

"I would like to tatoo the illness on my arm". The Integrated Personalized Nursing Diagnosis (IPND).

Acta Biomed 2018 Dec 7;89(7-S):50-59. Epub 2018 Dec 7.

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Background And Aim: The nursing diagnosis can based on two different approaches: the standard diagnosis, searching for regularities that can fall within pre-existing categories identified by the nurse, as the expert of the disease; the narrative diagnosis, based on personal meaning attributed to the illness, of which only the patient is the expert. The aim of this work is to underline the usefulness of integration between standard diagnosis and narrative diagnosis, through the Integrated Personalized Nursing Diagnosis (IPND).

Methods: A 31 years old man, suffering from leukaemia, is welcomed at an Italian Oncological Day Hospital, by a nurse trained in the IPND approach. Read More

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December 2018

Effect of Functional Mitral Regurgitation on Outcome in Patients Receiving Cardiac Resynchronization Therapy for Heart Failure.

Am J Cardiol 2019 Jan 26;123(1):75-83. Epub 2018 Sep 26.

Department of Cardiology, Heart Lung Center, Leiden University Medical Center, Leiden, The Netherlands. Electronic address:

Functional mitral regurgitation (FMR) is common in heart failure (HF), and negatively impacts prognosis. Cardiac resynchronization therapy (CRT) can improve FMR, but the long-term changes in and impact of FMR after CRT are still unclear. The present study investigated the prevalence, evolution and impact on mortality of FMR before and after CRT in patients with HF. Read More

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January 2019

The impact of statin therapy on survival of patients with gastrointestinal cancer.

Curr Drug Targets 2018 Dec 11. Epub 2018 Dec 11.

Metabolic syndrome Research center, Mashhad University of Medical Sciences, Mashhad. Iran.

Statins are 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitors that may play an important role in the evolution of cancers, due to their effects on cancer cell metabolism. Statins effect several potential pathways, including: cell proliferation, angiogenesis, apoptosis and metastasis. The number of trials assessing the putative clinical benefits of statins in cancer is increasing. Read More

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December 2018
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Effect of interfacial water structure on the Hydrogen evolution Reaction on Pt(111) modified with different Nickel Hydroxide coverages in alkaline media.

ACS Appl Mater Interfaces 2018 Dec 12. Epub 2018 Dec 12.

The hydrogen evolution reaction (HER) constitutes one of the most important reactions in electrochemistry due to the value of hydrogen as a vector for energy storage and transport. Therefore, understanding the mechanism of this reaction in relation to its pH-dependence is of crucial importance. While the HER on Pt(111) works efficiently in acid media, in alkaline media the reaction is impeded and considerably larger applied overpotentials are necessary. Read More

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December 2018

[Science and nursing science: What links, what issues and what future development for the discipline of nursing?]

Rech Soins Infirm 2018 09(134):6-15

This article examines the terms science, discipline and knowledge from the perspective of the use and advancement of knowledge in the discipline of nursing. It views the notion of organized knowledge as the foundation of a science as well as considering the use of scientific methods as imperative in any discipline that aims to contribute to the world of ideas by relying on rationality. This paper aims to trace the link between science and nursing science, to clarify scientific issues for nursing, and to begin thinking about understanding the concept of diversity and the effective contribution of doctoral training in nursing as a guarantee of the future evolution of this discipline. Read More

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September 2018

Single-Molecule Analysis of RNA Dynamics in Living Cells Using Molecular Beacons.

Methods Mol Biol 2019 ;1870:23-39

Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, China.

Over the past decade, emerging evidence has indicated that long intergenic noncoding RNAs (lincRNAs), a class of RNA transcripts greater than 200 nt in length, function as key regulators of gene expression in cellular physiology and pathogenesis. Greater understanding of lincRNA activities, particularly in the context of subcellular localization and dynamic regulation at the single-molecule level, is expected to provide in-depth understanding of molecular mechanisms that regulate cell behavior and disease evolution. We have recently developed a fluorescence-imaging approach to investigate RNA dynamics in living cells at the single-molecule level. Read More

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January 2019
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The methylation and telomere landscape in two families of marsupials with different rates of chromosome evolution.

Chromosome Res 2018 Dec 12. Epub 2018 Dec 12.

Institute for Applied Ecology, University of Canberra, Canberra, ACT, 2617, Australia.

Two marsupial families exemplify divergent rates of karyotypic change. The Dasyurid family has an extremely conserved karyotype. In contrast, there is significant chromosomal variation within the Macropodidae family, best exemplified by members of the genus Petrogale (rock-wallabies). Read More

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December 2018

Consecutive ligand-based PCET processes affording a doubly reduced nickel pyrazinedithiolate which transforms into a metal hydride required to evolve H.

Dalton Trans 2018 Dec 12. Epub 2018 Dec 12.

Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan. and International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan and Center for Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.

Our DFT results demonstrate that hydrogen evolution from water catalyzed by a nickel pyradinedithiolate (dcpdt) molecular hydrogen evolution catalyst [NiII(dcpdt)2]2- proceeds via the formation of a square-planar nickel(ii) hydride intermediate which is given by unprecedented structural transformation of a doubly reduced triply protonated species [NiII(dcpdtH2)(dcpdtH)]-, afforded as a result of two consecutive ligand-based reductions of [NiII(dcpdt)(dcpdtH)]- through proton-coupled electron transfer (PCET) pathways. Read More

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December 2018

A bio-inspired 3D quasi-fractal nanostructure for an improved oxygen evolution reaction.

Chem Commun (Camb) 2018 Dec 12. Epub 2018 Dec 12.

Institute for Advanced Materials, South China Academy of Advanced Optoelectronics and Guangdong Provincial Laboratory of Quantum Engineering and Quantum Materials, South China Normal University, Guangzhou, 510006, China.

We demonstrate a bio-inspired three-dimensional (3D) hierarchical catalyst, based on the Fe-doped nanoarrays of dendritic nickel trees, which provides large surface area, close to optimal electron transport, and large inter-branch open-channels for improving gas-bubble release, outperforming the benchmark catalyst of noble RuO2. Read More

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December 2018

Intraoral versus extraoral digital occlusal records: a pilot study.

Int J Comput Dent 2018 ;21(4):329-333

The aim of the present pilot study was to analyze the reliability of interocclusal contact records generated with an intraoral scanner (TRIOS Standard) and an extraoral scanner (Zfx Evolution). Ten patients were selected. The number of occlusal contacts was first determined with the conventional method using 8-µm articulating paper (gold standard) (control). Read More

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January 2018

Current Soccer Footwear, Its Role in Injuries and Potential for Improvement.

Sports Med Int Open 2018 Apr 25;2(2):E52-E61. Epub 2018 May 25.

Laboratoire de Biomécanique Appliquée, Aix-Marseille Univ, IFSTTAR, LBA UMR_T24, Marseille, France.

Soccer is the most popular sport in the world and generates great financial revenue. It is also a sport whose practice has evolved considerably in terms of intensity and commitment, and in which the intrinsic risk of injury (not directly related to an interaction with the environment) is particularly high. In this context, the cleated shoe as a major component of soccer equipment may play a key role in the overexposure to injury. Read More

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Molecular evolution and genomics of hepatitis B virus subgenotype C2 strain predominant in the chronic patients in Bangladesh.

Virusdisease 2018 Dec 17;29(4):486-490. Epub 2018 Oct 17.

Molecular Biotechnology Division, National Institute of Biotechnology, Savar, Dhaka, 1349 Bangladesh.

Evolution of hepatitis B virus (HBV) is a mystery and caused mainly by genomic mutations as well as recombination. Viral evolution may be responsible for increasing disease severity and render resistance to the existing treatment processes. HBV/C2 strain is associated with chronicity, which may progress to the liver cirrhosis and hepatocellular carcinoma. Read More

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December 2018

Implications of protein conformations to modifying novel inhibitor Oseltamivir for 2009 H1N1 influenza A virus by simulation and docking studies.

Virusdisease 2018 Dec 1;29(4):461-467. Epub 2018 Sep 1.

Department of Biological Science and Engineering, Maulana Azad National Institute of Technology, Bhopal, India.

Recently three FDA approved existing drugs, namely-Oseltamivir, Peramivir and Zanamivir, used against Neuraminidase (NA) for the inhibitory effect on the process of viral progeny release to inhibit infection. All NA subtypes has been divided into two groups (Group 1 and Group 2) based on phylogenetic study. Oseltamivir and Zanamivir drugs are designed for Group 2 NA but are also used against 2009 H1N1 NA that lies in Group 1. Read More

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December 2018

Complete genome sequence of sacbrood virus isolated from Asiatic honey bee in India.

Virusdisease 2018 Dec 27;29(4):453-460. Epub 2018 Sep 27.

2Molecular Virology Lab, Division of Crop Protection, ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchirappalli, Tamil Nadu 620102 India.

We determined the complete genome sequence of a sacbrood virus (SBV) infecting Indian honey bee () from Tamil Nadu, India named as AcSBV-IndTN1. The genome of AcSBV-IndTN1 comprised of 8740 nucleotides, encoding a single large ORF containing 2849 amino acids flanked by 5' and 3' untranslated regions. Results of phylogenetic tree analysis based on complete genomes of SBV isolates indicated that the virus isolates from India isolated from the Asiatic honey bee . Read More

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December 2018
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Structural Basis for the Limited Response to Oxidative and Thiol-Conjugating Agents by Triosephosphate Isomerase From the Photosynthetic Bacteria .

Front Mol Biosci 2018 27;5:103. Epub 2018 Nov 27.

Laboratorio Nacional de Genómica para la Biodiversidad, Centro de Investigación y de Estudios Avanzados del IPN, Guanajuato, Mexico.

In plants, the ancestral cyanobacterial triosephosphate isomerase (TPI) was replaced by a duplicated version of the cytosolic TPI. This isoform acquired a transit peptide for chloroplast localization and functions in the Calvin-Benson cycle. To gain insight into the reasons for this gene replacement in plants, we characterized the TPI from the photosynthetic bacteria (SyTPI). Read More

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November 2018

Sensitive Colorimetric Hg Detection via Amalgamation-Mediated Shape Transition of Gold Nanostars.

Front Chem 2018 27;6:566. Epub 2018 Nov 27.

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China.

Reliable and sensitive methods to monitor mercury levels in real samples are highly important for environment protection and human health. Herein, a label-free colorimetric sensor for Hg quantitation using gold nanostar (GNS) has been demonstrated, based on the formation of Au-Hg amalgamate that leads to shape-evolution of the GNS and changes in its absorbance. Addition of ascorbic acid (AA) to GNS solution is important for quantitation of Hg, mainly because it can reduce Hg to Hg to enhance amalgamation on the GNSs and stabilize GNSs. Read More

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November 2018

Maintenance and reappearance of extremely divergent intra-host HIV-1 variants.

Virus Evol 2018 Jul 4;4(2):vey030. Epub 2018 Dec 4.

Division of HIV/AIDS Prevention, Centers for Disease Control and Prevention, Atlanta, USA.

Understanding genetic variation in human immunodeficiency virus (HIV) is clinically and immunologically important for patient treatment and vaccine development. We investigated the longitudinal intra-host genetic variation of HIV in over 3,000 individuals in the US National HIV Surveillance System with at least four reported HIV-1 polymerase () sequences. In this population, we identified 149 putative instances of superinfection (i. Read More

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An overview on reproductive isolation in complex.

AoB Plants 2018 Dec 22;10(6):ply060. Epub 2018 Nov 22.

Rice Research Institute, Yunnan Agriculture University, Kunming, Yunnan, China.

Reproductive isolation is generally regarded as the essence of the speciation process. Studying closely related species is convenient for understanding the genetic basis of reproductive isolation. Therefore, the present review is restricted to the species and subspecies of the complex, which includes the two domestic rice cultivars and six wild species. Read More

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December 2018

Time Course of Upper Limb Function in Children with Unilateral Cerebral Palsy: A Five-Year Follow-Up Study.

Neural Plast 2018 14;2018:2831342. Epub 2018 Nov 14.

KU Leuven, University of Leuven, Department of Rehabilitation Sciences, Leuven, Belgium.

Knowledge on long-term evolution of upper limb function in children with unilateral cerebral palsy (CP) is scarce. The objective was to report the five-year evolution in upper limb function and identify factors influencing time trends. Eighty-one children (mean age 9 y and 11 mo, SD 3 y and 3 mo) were assessed at baseline with follow-up after 6 months, 1, and 5 years. Read More

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November 2018

Brain of the blind: transcriptomics of the golden-line cavefish brain.

Curr Zool 2018 Dec 12;64(6):765-773. Epub 2018 Jan 12.

Institute of Neuroscience, University of Oregon, Eugene, OR, USA.

The genus (golden-line barbel) includes 25 species of cave-dwelling blind fish (cavefish) and more than 30 surface-dwelling species with normal vision. Cave environments are dark and generally nutrient-poor with few predators. Cavefish of several genera evolved convergent morphological adaptations in visual, pigmentation, brain, olfactory, and digestive systems. Read More

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December 2018

Exposure to cuticular bacteria can alter host behavior in a funnel-weaving spider.

Curr Zool 2018 Dec 16;64(6):721-726. Epub 2017 Nov 16.

Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA.

Contact with environmental microbes are arguably the most common species interaction in which any animal participates. Studies have noted diverse relationships between hosts and resident microbes, which can have strong consequences for host development, physiology, and behavior. Many of these studies focus specifically on pathogens or beneficial microbes, while the benign microbes, of which the majority of bacteria could be described, are often ignored. Read More

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December 2018

Geography and Environment Shape Landscape Genetics of Mediterranean Alpine Species Poiret. (Caryophyllaceae).

Front Plant Sci 2018 27;9:1698. Epub 2018 Nov 27.

Área de Biodiversidad y Conservación, Escuela Superior de Ciencias Experimentales y Tecnología (ESCET), Universidad Rey Juan Carlos, Madrid, Spain.

The study of the drivers that shape spatial genetic structure across heterogeneous landscapes is one of the main approaches used to understand population dynamics and responses in changing environments. While the Isolation-by-Distance model (IBD) assumes that genetic differentiation increases among populations with geographical distance, the Isolation-by-Resistance model (IBR) also considers geographical barriers and other landscape features that impede gene flow. On the other hand, the Isolation-by-Environment model (IBE) explains genetic differentiation through environmental differences between populations. Read More

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November 2018

Depth and Dissolved Organic Carbon Shape Microbial Communities in Surface Influenced but Not Ancient Saline Terrestrial Aquifers.

Front Microbiol 2018 27;9:2880. Epub 2018 Nov 27.

Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden.

The continental deep biosphere is suggested to contain a substantial fraction of the earth's total biomass and microorganisms inhabiting this environment likely have a substantial impact on biogeochemical cycles. However, the deep microbial community is still largely unknown and can be influenced by parameters such as temperature, pressure, water residence times, and chemistry of the waters. In this study, 21 boreholes representing a range of deep continental groundwaters from the Äspö Hard Rock Laboratory were subjected to high-throughput 16S rRNA gene sequencing to characterize how the different water types influence the microbial communities. Read More

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November 2018

A New Phylogenetic Framework for the Animal-Adapted Complex.

Front Microbiol 2018 27;9:2820. Epub 2018 Nov 27.

Swiss Tropical and Public Health Institute, Basel, Switzerland.

Tuberculosis (TB) affects humans and other animals and is caused by bacteria from the complex (MTBC). Previous studies have shown that there are at least nine members of the MTBC infecting animals other than humans; these have also been referred to as ecotypes. However, the ecology and the evolution of these animal-adapted MTBC ecotypes are poorly understood. Read More

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November 2018

Ancestrality and Mosaicism of Giant Viruses Supporting the Definition of the Fourth TRUC of Microbes.

Front Microbiol 2018 27;9:2668. Epub 2018 Nov 27.

Aix-Marseille Université, Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (AP-HM); Microbes, Evolution, Phylogeny and Infection (MEΦI); Institut Hospitalo-Universitaire (IHU) - Méditerranée Infection, Marseille, France.

Giant viruses of amoebae were discovered in 2003. Since then, their diversity has greatly expanded. They were suggested to form a fourth branch of life, collectively named 'TRUC' (for "Things Resisting Uncompleted Classifications") alongside , , and . Read More

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November 2018

Somatotropic Axis Regulation Unravels the Differential Effects of Nutritional and Environmental Factors in Growth Performance of Marine Farmed Fishes.

Front Endocrinol (Lausanne) 2018 27;9:687. Epub 2018 Nov 27.

Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (IATS-CSIC), Castellón, Spain.

The Gh/Prl/Sl family has evolved differentially through evolution, resulting in varying relationships between the somatotropic axis and growth rates within and across fish species. This is due to a wide range of endogenous and exogenous factors that make this association variable throughout season and life cycle, and the present minireview aims to better define the nutritional and environmental regulation of the endocrine growth cascade over precisely defined groups of fishes, focusing on Mediterranean farmed fishes. As a result, circulating Gh and Igf-i are revitalized as reliable growth markers, with a close association with growth rates of gilthead sea bream juveniles with deficiency signs in both macro- or micro-nutrients. Read More

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November 2018

The Functions of Prospection - Variations in Health and Disease.

Front Psychol 2018 27;9:2328. Epub 2018 Nov 27.

The University of Sydney, Brain and Mind Centre, School of Psychology, Sydney, NSW, Australia.

Much of human life revolves around anticipating and planning for the future. It has become increasingly clear that this capacity for is a core adaptive function of the mind. Here, we review the role of prospection in two key functional domains: goal-directed behavior and flexible decision-making. Read More

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November 2018

Esophageal Metallic-Stent Migration: a Rare Cause of Anal Pain in a Patient with Gastric Cancer.

Indian J Surg Oncol 2018 Dec 16;9(4):576-577. Epub 2018 May 16.

2Department of Surgery, Hospital General Tacuba, ISSSTE, Mexico City, Mexico.

Stents are a great development for esophageal fistula treatment; however, stent migration is a frequent complication. A stent migration that caused anal pain is presented. A 79-year-old man with poorly differentiated gastric carcinoma was submitted to a total gastrectomy with a Roux-en-Y esophagojejunostomy. Read More

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December 2018
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