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https://www.readbyqxmd.com/read/27915413/resource-partitioning-by-evergreen-and-deciduous-species-in-a-tropical-dry-forest
#1
Juan C Álvarez-Yépiz, Alberto Búrquez, Angelina Martínez-Yrízar, Mark Teece, Enrico A Yépez, Martin Dovciak
Niche differentiation can lead to coexistence of plant species by partitioning limiting resources. Light partitioning promotes niche differentiation in tropical humid forests, but it is unclear how niche partitioning occurs in tropical dry forests where both light and soil resources can be limiting. We studied the adult niche of four dominant evergreen (cycad, palm) and drought-deciduous (legume, oak) species co-occurring along environmental gradients. We analyzed light intensity and soil fertility effects on key functional traits related to plant carbon and water economy, how these traits determine species' functional strategies, and how these strategies relate to relative species abundance and spatial patterns...
December 3, 2016: Oecologia
https://www.readbyqxmd.com/read/27915284/dna-extraction-protocols-may-influence-biodiversity-detected-in-the-intestinal-microbiome-a-case-study-from-wild-prussian-carp-carassius-gibelio
#2
Elena N Kashinskaya, Karl B Andree, Evgeniy P Simonov, Mikhail M Solovyev
In this investigation, we examined the influence of different DNA extraction protocols on results obtained for intestinal microbiota of Prussian carp. We showed that significant differences were observed in numbers of reads, OTU's, Shannon index and taxonomic composition between two different DNA extraction protocols for intestine of Prussian carp (Carassius gibelio), and differences were also evident between microbial communities in the intestinal mucosa and intestinal content. Statistical analyses of 25 published articles also revealed a significant relationship between methods of DNA extraction and bacterial diversity in fish intestine of freshwater species...
December 2, 2016: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/27915251/identification-of-a-campylobacter-coli-methyltransferase-targeting-adenines-at-gatc-sites
#3
Vikrant Dutta, Eric Altermann, Maria D Crespo, Jonathan W Olson, Robin M Siletzky, Sophia Kathariou
Campylobacter coli can infect humans and colonize multiple other animals but its host-associated genes or adaptations are poorly understood. Adenine methylation at GATC sites, resulting in MboI resistance of genomic DNA, was earlier frequently detected among C. coli from swine but not among turkey-derived isolates. The underlying genetic basis has remained unknown. Comparative genome sequence analyses of C. coli 6461, a swine-derived strain with MboI-resistant DNA, revealed two chromosomal ORFs, 0059 and 0060, encoding a putative DNA methyltransferase and a conserved hypothetical protein, respectively, which were lacking from the genome of the turkey-derived C...
December 2, 2016: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/27915212/rapid-detection-and-evolutionary-analysis-of-legionella-pneumophila-serogroup-1-sequence-type-47
#4
M Mentasti, P Cassier, S David, C Ginevra, L Gomez-Valero, A Underwood, B Afshar, J Etienne, J Parkhill, V Chalker, C Buchrieser, T G Harrison, S Jarraud
OBJECTIVES: Legionella pneumophia serogroup 1 (Lp1) sequence type 47 is the leading cause of legionellosis in North-Western Europe but surprisingly it is rarely isolated from environmental samples. Comparative genomics was applied to develop a PCR assay and to better understand the evolution of this strain. METHODS: Comparative analysis of 36 genomes representative of the Lp species was used to identify specific PCR targets which were then evaluated in silico on 545 sequenced genomes, and in vitro on 436 Legionella strains, 106 respiratory samples and three environmental samples from proven ST47 sources...
November 30, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27915203/adjuvant-radiation-therapy-and-survival-for-adenoid-cystic-carcinoma-of-the-breast
#5
Jia-Yuan Sun, San-Gang Wu, Shan-Yu Chen, Feng-Yan Li, Huan-Xin Lin, Yong-Xiong Chen, Zhen-Yu He
PURPOSE: The assess the clinical value of different types of surgical procedures and further analyze the effect of adjuvant radiation therapy (RT) for adenoid cystic carcinoma (ACC) of the breast. METHODS: Patients with ACC of the breast were identified using a population-based national registration database (Surveillance, Epidemiology, and End Results, SEER). The Kaplan-Meier method and Cox regression models were performed to determine the impact of the surgical procedures and adjuvant RT associated with cause-specific survival (CSS) and overall survival (OS)...
December 1, 2016: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/27915200/effects-of-prophylactic-indomethacin-on-vasopressor-dependent-hypotension-in-extremely-preterm-infants
#6
Melissa Liebowitz, Jane Koo, Andrea Wickremasinghe, Isabel Elaine Allen, Ronald I Clyman
OBJECTIVE: To determine whether a moderate-to-large patent ductus arteriosus (PDA) is responsible for vasopressor-dependent hypotension, occurring at the end of the first postnatal week. STUDY DESIGN: We performed a retrospective, double cohort controlled study of infants delivered at ≤27(+6) weeks' gestation (n = 313). From January 2004 through April 2011, all infants were treated with prophylactic indomethacin ([PINDO] epoch). From May 2011 through December 2015, no infant was treated with indomethacin until at least 8 postnatal days (conservative epoch)...
December 1, 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27915176/mining-identification-and-function-analysis-of-micrornas-and-target-genes-in-peanut-arachis-hypogaea-l
#7
Tingting Zhang, Shuhao Hu, Caixia Yan, Chunjuan Li, Xiaobo Zhao, Shubo Wan, Shihua Shan
In the present investigation, a total of 60 conserved peanut (Arachis hypogaea L.) microRNA (miRNA) sequences, belonging to 16 families, were identified using bioinformatics methods. There were 392 target gene sequences, identified from 58 miRNAs with Target-align software and BLASTx analyses. Gene Ontology (GO) functional analysis suggested that these target genes were involved in mediating peanut growth and development, signal transduction and stress resistance. There were 55 miRNA sequences, verified employing a poly (A) tailing test, with a success rate of up to 91...
November 24, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27915153/room-temperature-structure-of-human-igg4-fc-from-crystals-analysed-in-situ
#8
Anna M Davies, Theo Rispens, Pleuni Ooijevaar-de Heer, Rob C Aalberse, Brian J Sutton
The Fc region of IgG antibodies (Cγ2 and Cγ3 domains) is responsible for effector functions such as antibody-dependent cell-mediated cytotoxicity and phagocytosis, through engagement with Fcγ receptors, although the ability to elicit these functions differs between the four human IgG subclasses. A key determinant of Fcγ receptor interactions is the FG loop in the Cγ2 domain. High resolution cryogenic IgG4-Fc crystal structures have revealed a unique conformation for this loop, which could contribute to the particular biological properties of this subclass...
December 1, 2016: Molecular Immunology
https://www.readbyqxmd.com/read/27915045/in-vivo-selection-of-heterotypically-interacting-transmembrane-helices-complementary-helix-surfaces-rather-than-conserved-interaction-motifs-drive-formation-of-transmembrane-hetero-dimers
#9
Dominik Steindorf, Dirk Schneider
Single pass transmembrane proteins make up almost half of the whole transmembrane proteome. Contacts between such bitopic transmembrane proteins are common, and oligomerization of their single transmembrane helix is involved in triggering and regulation of signal transduction across cell membranes. In several recent analyses the distribution of amino acids at helix-helix contact sides has been analyzed, and e.g. a preference of amino acids with small side chains has been identified. Here we select amino acids, amino acid pairings and amino acid motifs, which mediate strong interactions of single-span transmembrane α-helices...
November 30, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27915037/quantification-of-pea-enation-mosaic-virus-1-and-2-during-infection-of-pisum-sativum-by-one-step-real-time-rt-pcr
#10
Juliette Doumayrou, Melissa Sheber, Bryony C Bonning, W Allen Miller
Pea enation mosaic virus 1 (PEMV1) and Pea enation mosaic virus 2 (PEMV2) are two viruses in an obligate symbiosis that cause pea enation mosaic disease mainly in plants in the Fabaceae family. This virus system is a valuable model to investigate plant virus replication, movement and vector transmission. Thus, here we describe growth conditions, virus detection methods, and virus accumulation behavior. To measure the accumulation and movement of PEMV1 and PEMV2 in plants during the course of infection, we developed a quantitative real-time one-step reverse transcription PCR procedure using the SYBR-green(®) technology...
November 30, 2016: Journal of Virological Methods
https://www.readbyqxmd.com/read/27915010/a-large-tumour-of-the-left-atrium-a-10-year-follow-up
#11
Agnieszka M Łebek-Szatańska, L Łebek Zbigniew, Marek J Dąbrowski, Piotr S Kardaszewicz
Benign myxomas are the most common among primary tumours in the left atrium of the heart and they usually require an urgent operative management. However, in times of constant ageing of the population and dealing with patients with severe concomitant diseases, an interesting question appears about the conservative approach. We present a case of 75-year-old woman, once diagnosed and operated on left atrium myxoma, with recurrent tumour in the site of resection found in control echocardiography 1,5 years later...
November 30, 2016: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/27914963/hypothermia-in-mouse-is-caused-by-adenosine-a1-and-a3-receptor-agonists-and-amp-via-three-distinct-mechanisms
#12
Jesse Lea Carlin, Shalini Jain, Elizabeth Gizewski, Tina C Wan, Dilip K Tosh, Cuiying Xiao, John A Auchampach, Kenneth A Jacobson, Oksana Gavrilova, Marc L Reitman
Small mammals have the ability to enter torpor, a hypothermic, hypometabolic state, allowing impressive energy conservation. Administration of adenosine or adenosine 5'-monophosphate (AMP) can trigger a hypothermic, torpor-like state. We investigated the mechanisms for hypothermia using telemetric monitoring of body temperature in wild type and receptor knock out (Adora1(-/-)-/-, Adora3(-/-)) mice. Confirming prior data, stimulation of the A3 adenosine receptor (AR) induced hypothermia via peripheral mast cell degranulation, histamine release, and activation of central histamine H1 receptors...
November 30, 2016: Neuropharmacology
https://www.readbyqxmd.com/read/27914921/polydeoxyribonucleotide-injection-in-the-treatment-of-chronic-supraspinatus-tendinopathy-a-case-controlled-retrospective-comparative-study-of-6-month-follow-up
#13
Young Chun Yoon, Doo-Hyung Lee, Michael Young Lee, Seung-Hyun Yoon
OBJECTIVE: To determine the efficacy of polydeoxyribonucleotide (PDRN) injection for rotator cuff disease (RCD). DESIGN: Case-controlled, retrospective, comparative study. SETTING: Outpatient clinic at university-affiliated tertiary care hospital. PARTICIPANTS: 106 patients with chronic non-traumatic refractory RCD who were unresponsive to at least 1 month of conservative treatment; 55 patients received PDRN injection (PDRN group) and 51 continued conservative treatment (control group)...
November 30, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27914912/identification-of-foxj1-effectors-during-ciliogenesis-in-the-foetal-respiratory-epithelium-and-embryonic-left-right-organiser-of-the-mouse
#14
Michael Stauber, Marina Weidemann, Oliver Dittrich-Breiholz, Katharina Lobschat, Leonie Alten, Michaela Mai, Anja Beckers, Michael Kracht, Achim Gossler
Formation of motile cilia in vertebrate embryos is essential for proper development and tissue function. Key regulators of motile ciliogenesis are the transcription factors FOXJ1 and NOTO, which are conserved throughout vertebrates. Downstream target genes of FOXJ1 have been identified in a variety of species, organs and cultured cell lines; in murine embryonic and foetal tissues, however, FOXJ1 and NOTO effectors have not been comprehensively analysed and our knowledge of the downstream genetic programme driving motile ciliogenesis in the mammalian lung and ventral node is fragmentary...
November 30, 2016: Developmental Biology
https://www.readbyqxmd.com/read/27914910/transoral-transcervical-oropharyngectomy-without-mandibulotomy-associated-to-fasciocutaneous-radial-forearm-free-flap-reconstruction-for-oropharyngeal-cancer-postoperative-course-oncologic-and-functional-results-and-prognostic-factors
#15
M Roux, O Dassonville, M Ettaiche, G Poissonnet, A Sudaka, A Bozec
OBJECTIVE: To analyze postoperative course, oncologic and functional results and prognostic factors of transoral-transcervical oropharyngeal cancer surgery without mandibulotomy, associated to radial forearm free-flap reconstruction. MATERIAL AND METHODS: Retrospective analysis of computerized medical records of all patients who underwent this type of surgery in our institution between 2004 and 2014. Predictive factors of oncologic and functional results were investigated on univariate and multivariate analyses...
November 30, 2016: European Annals of Otorhinolaryngology, Head and Neck Diseases
https://www.readbyqxmd.com/read/27914758/fluid-therapy-in-lung-disease
#16
REVIEW
Elizabeth Rozanski, Alex Lynch
Fluid therapy is the cornerstone of supportive care in veterinary medicine. In dogs and cats with preexisting confirmed or suspected pulmonary disease, concerns may exist that the fluid therapy may impair gas exchange, either through increases in hydrostatic pressures or extravasation. Colloidal therapy is more likely to magnify lung injury compared with isotonic crystalloids. Radiographic evidence of fluid overload is a late-stage finding, whereas point-of-care ultrasound may provide earlier information that can also be assessed periodically at the patient side...
December 1, 2016: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/27914743/sequential-immunization-with-consensus-influenza-hemagglutinins-raises-cross-reactive-neutralizing-antibodies-against-various-heterologous-ha-strains
#17
Hui Zhou, Yang Huang, Songhua Yuan, Yuanyuan Li, Shuyan Wu, Jianqing Xu, Rui Huang
Seasonal and emerging epidemics caused by influenza virus remain as a public health concern and an economic burden. The weak immunogenicity of conserved epitopes on hemagglutinin that induces broad protective immune responses is the main obstacle to the development of universal vaccines. In the present report, we designed the cross-subtypic sequential vaccination strategy and evaluated its neutralizing antibody (nAb) activity by pseudovirus-based neutralization assays. The results clearly indicated that compared with traditional vaccines strategy, the cross-subtypic sequential immunization could significantly induce a broad serum cross-reactive nAb response in mice as well as against homologous strains, and provide protection from heterologous virus PR8 (H1N1) challenge...
November 30, 2016: Vaccine
https://www.readbyqxmd.com/read/27914651/individualised-functional-restoration-plus-guideline-based-advice-vs-advice-alone-for-non-reducible-discogenic-low-back-pain-a-randomised-controlled-trial
#18
Alexander Y P Chan, Jon J Ford, Luke D Surkitt, Matthew C Richards, Sarah L Slater, Megan Davidson, Andrew J Hahne
OBJECTIVES: To evaluate the effectiveness of individualised functional restoration plus guideline-based advice compared to advice alone in people with non-reducible discogenic pain (NRDP). DESIGN: Subgroup analysis within a multicentre, parallel group randomised controlled trial. SETTING: Fifteen primary care physiotherapy clinics. PARTICIPANTS: Ninety-six participants with clinical features indicative of NRDP (6 week to 6 month duration of injury)...
August 10, 2016: Physiotherapy
https://www.readbyqxmd.com/read/27914640/assessing-the-fugitive-emission-of-ch4-via-migration-along-fault-zones-comparing-potential-shale-gas-basins-to-non-shale-basins-in-the-uk
#19
I M Boothroyd, S Almond, F Worrall, R J Davies
This study considered whether faults bounding hydrocarbon-bearing basins could be conduits for methane release to the atmosphere. Five basin bounding faults in the UK were considered: two which bounded potential shale gas basins; two faults that bounded coal basins; and one that bounded a basin with no known hydrocarbon deposits. In each basin, two mobile methane surveys were conducted, one along the surface expression of the basin bounding fault and one along a line of similar length but not intersecting the fault...
September 24, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27914524/the-phenylalanine-ammonia-lyase-gene-family-in-isatis-indigotica-fort-molecular-cloning-characterization-and-expression-analysis
#20
Rui-Fang Ma, Qian-Zi Liu, Ying Xiao, Lei Zhang, Qing Li, Jun Yin, Wan-Sheng Chen
Phenolic compounds, metabolites of the phenylpropanoid pathway, play an important role in the growth and environmental adaptation of many plants. Phenylalanine ammonia-lyase (PAL) is the first key enzyme of the phenylpropanoid pathway. The present study was designed to investigate whether there is a multi-gene family in I. Indigotic and, if so, to characterize their properties. We conducted a comprehensive survey on the transcription profiling database by using tBLASTn analysis. Several bioinformatics methods were employed to perform the prediction of composition and physicochemical characters...
November 2016: Chinese Journal of Natural Medicines
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