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https://www.readbyqxmd.com/read/29786908/opposing-patterns-of-intraspecific-and-interspecific-differentiation-in-sex-chromosomes-and-autosomes
#1
Peter A Moran, Sonia Pascoal, Timothee Cezard, Judith E Risse, Michael G Ritchie, Nathan W Bailey
Linking intraspecific and interspecific divergence is an important challenge in speciation research. X chromosomes are expected to evolve faster than autosomes and disproportionately contribute to reproductive barriers, and comparing genetic variation on X and autosomal markers within and between species can elucidate evolutionary processes that shape genome variation. We performed RADseq on a 16-population transect of two closely-related Australian cricket species, Teleogryllus commodus and T. oceanicus, covering allopatry and sympatry...
May 22, 2018: Molecular Ecology
https://www.readbyqxmd.com/read/29786462/multi-institutional-study-of-the-variability-in-target-delineation-for-six-targets-commonly-treated-with-radiosurgery
#2
Helena Sandström, Hidefumi Jokura, Caroline Chung, Iuliana Toma-Dasu
BACKGROUND: Although accurate delineation of the target is a key factor of success in radiosurgery there are no consensus guidelines for target contouring. AIM: The aim of the present study was therefore to quantify the variability in target delineation and discuss the potential clinical implications, for six targets regarded as common in stereotactic radiosurgery. MATERIAL AND METHODS: Twelve Gamma Knife centers participated in the study by contouring the targets and organs at risks and performing the treatment plans...
May 22, 2018: Acta Oncologica
https://www.readbyqxmd.com/read/29786411/bad-transmission-and-sad-distribution-a-new-scenario-for-critical-limb-ischemia
#3
Roberto Ferraresi, Giovanni Mauri, Fabrizio Losurdo, Nicola Troisi, Diego Brancaccio, Carlo M Caravaggi, Luca Neri
BACKGROUND: Most of the studies on peripheral artery disease (PAD) focused on above-the-ankle artery disease, while less is known about foot artery disease. We hypothesize a scenario were two different diseases can be present in PAD patients, big artery disease (BAD) and small artery disease (SAD), overlapping at the foot level; the aim of this study is to evaluate their prevalence and their correlation with risk factors and critical limb ischemia (CLI) in a large cohort of patients with symptomatic PAD...
May 22, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29786180/-bartter-syndrome-severe-rare-orphan-kidney-disease-a-step-towards-therapy-through-pharmacogenetic-and-epidemiological-studies
#4
EDITORIAL
Elena Conte, Paola Imbrici, Dalila Sahbani, Antonella Liantonio, Diana Conte
Bartter syndromes (BS) types 1-5 are rare salt-losing tubulopathies presenting with overlapping clinical phenotypes including marked salt wasting and hypokalemia leading to polyuria, polydipsia, volume contraction, muscle weakness and growth retardation. These diseases are due to an impairment of sodium, potassium, chloride reabsorption caused by mutations in genes encoding for ion channel or transporters expressed in specific nephron tubule segments. Particularly, BS type 3 is a clinically heterogeneous form caused by mutations in CLCNKB gene which encodes the ClC-Kb chloride channel involved in NaCl reabsorption in the renal tubule...
May 2018: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/29785933/a-comparison-of-peripheral-imaging-technologies-for-bone-and-muscle-quantification-a-review-of-segmentation-techniques
#5
REVIEW
Andy Kin On Wong, Sarah Lynn Manske
Musculoskeletal science has developed many overlapping branches, necessitating specialists from 1 area of focus to often require the expertise in others. In terms of imaging, this means obtaining a comprehensive illustration of bone, muscle, and fat tissues. There is currently a lack of a reliable resource for end users to learn about these tissues' imaging and quantification techniques together. An improved understanding of these tissues has been an important progression toward better prediction of disease outcomes and better elucidation of their interaction with frailty, aging, and metabolic disorders...
April 17, 2018: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/29785919/genomic-selection-in-dairy-cattle-simulated-populations
#6
Leonardo de Oliveira Seno, Diego Gomes Freire Guidolin, Rusbel Raul Aspilcueta-Borquis, Guilherme Batista do Nascimento, Thiago Bruno Ribeiro da Silva, Henrique Nunes de Oliveira, Danísio Prado Munari
Genomic selection is arguably the most promising tool for improving genetic gain in domestic animals to emerge in the last few decades, but is an expensive process. The aim of this study was to evaluate the economic impact related to the implementation of genomic selection in a simulated dairy cattle population. The software QMSim was used to simulate genomic and phenotypic data. The simulated genome contained 30 chromosomes with 100 cm each, 1666 SNPs markers equally spread and 266 QTLs randomly designated for each chromosome...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785701/botulin-toxin-injection-to-improve-the-results-of-sphincter-overlap-in-high-grade-obstetric-anal-sphincter-injury-syndrome
#7
N Falco, L Pisegna Cerone, R Bellomo, A Infantino
No abstract text is available yet for this article.
May 21, 2018: Techniques in Coloproctology
https://www.readbyqxmd.com/read/29785649/intersections-of-discrimination-due-to-unemployment-and-mental-health-problems-the-role-of-double-stigma-for-job-and-help-seeking-behaviors
#8
Tobias Staiger, Tamara Waldmann, Nathalie Oexle, Moritz Wigand, Nicolas Rüsch
PURPOSE: The everyday lives of unemployed people with mental health problems can be affected by multiple discrimination, but studies about double stigma-an overlap of identities and experiences of discrimination-in this group are lacking. We therefore studied multiple discrimination among unemployed people with mental health problems and its consequences for job- and help-seeking behaviors. METHODS: Everyday discrimination and attributions of discrimination to unemployment and/or to mental health problems were examined among 301 unemployed individuals with mental health problems...
May 21, 2018: Social Psychiatry and Psychiatric Epidemiology
https://www.readbyqxmd.com/read/29785624/longitudinal-neuroimaging-hippocampal-markers-for-diagnosing-alzheimer-s-disease
#9
Carlos Platero, Lin Lin, M Carmen Tobar
Hippocampal atrophy measures from magnetic resonance imaging (MRI) are powerful tools for monitoring Alzheimer's disease (AD) progression. In this paper, we introduce a longitudinal image analysis framework based on robust registration and simultaneous hippocampal segmentation and longitudinal marker classification of brain MRI of an arbitrary number of time points. The framework comprises two innovative parts: a longitudinal segmentation and a longitudinal classification step. The results show that both steps of the longitudinal pipeline improved the reliability and the accuracy of the discrimination between clinical groups...
May 21, 2018: Neuroinformatics
https://www.readbyqxmd.com/read/29785500/boosting-the-efficiency-of-site-saturation-mutagenesis-for-a-difficult-to-randomize-gene-by-a-two-step-pcr-strategy
#10
Aitao Li, Carlos G Acevedo-Rocha, Manfred T Reetz
Site-saturation mutagenesis (SSM) has been used in directed evolution of proteins for a long time. As a special form of saturation mutagenesis, it involves individual randomization at a given residue with formation of all 19 amino acids. To date, the most efficient embodiment of SSM is a one-step PCR-based approach using NNK codon degeneracy. However, in the case of difficult-to-randomize genes, SSM may not deliver all of the expected 19 mutants, which compels the user to invest further efforts by applying site-directed mutagenesis for the construction of the missing mutants...
May 21, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29785445/acoustically-enhanced-photodetection-by-a-black-phosphorus-mos-2-van-der-waals-heterojunction-p-n-diode
#11
Shijun Zheng, Enxiu Wu, Zhihong Feng, Rao Zhang, Yuan Xie, Yuanyuan Yu, Rui Zhang, Quanning Li, Jing Liu, Wei Pang, Hao Zhang, Daihua Zhang
We developed a new way to enhance the photoresponsivity of a van der Waals heterojunction p-n diode using surface acoustic waves (SAWs). The diode was constructed on top of a piezoelectric LiNbO3 substrate and composed of p-type black phosphorus (BP) and n-type molybdenum disulfide (MoS2) flakes that partly overlapped with each other. This layout facilitated the applied SAWs to rapidly drive carriers out of the depletion region. In this structural design, SAWs promoted the separation of photogenerated carriers, and thus greatly increased the photocurrent...
May 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29785338/coarse-and-fine-scale-patterns-of-distribution-and-habitat-selection-places-an-amazonian-floodplain-curassow-in-double-jeopardy
#12
Gabriel A Leite, Izeni P Farias, André L S Gonçalves, Joseph E Hawes, Carlos A Peres
Patterns of habitat selection are influenced by local productivity, resource availability, and predation risk. Species have taken millions of years to hone the macro- and micro-habitats they occupy, but these may now overlap with contemporary human threats within natural species ranges. Wattled Curassow ( Crax globulosa ), an endemic galliform species of the western Amazon, is threatened by both hunting and habitat loss, and is restricted to white-water floodplain forests of major Amazonian rivers. In this study conducted along the Juruá River, Amazonas, Brazil, we quantified the ranging ecology and fine-scale patterns of habitat selection of the species...
2018: PeerJ
https://www.readbyqxmd.com/read/29785133/are-quantitative-histopathologic-criteria-capable-of-differentiating-psoriasis-from-chronic-dermatitis
#13
Hamid Reza Ghasemi Basir, Pedram Alirezaei, Zahra Hamian, Elham Khanlarzadeh
Background: There are overlapping features in histopathologic characteristics of psoriasis and chronic dermatitis, which sometimes make the correct diagnosis difficult. Objective: The aim of this study was to compare the histopathologic diagnostic features of psoriasis with chronic dermatitis quantitatively. Patients and methods: In this study, 30 patients with psoriasis and 30 patients with chronic dermatitis were included. Diagnosis of psoriasis or chronic dermatitis was based on clinicopathologic correlation...
2018: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/29785078/detection-of-hyper-conserved-regions-in-hepatitis-b-virus-x-gene-potentially-useful-for-gene-therapy
#14
Carolina González, David Tabernero, Maria Francesca Cortese, Josep Gregori, Rosario Casillas, Mar Riveiro-Barciela, Cristina Godoy, Sara Sopena, Ariadna Rando, Marçal Yll, Rosa Lopez-Martinez, Josep Quer, Rafael Esteban, Maria Buti, Francisco Rodríguez-Frías
AIM: To detect hyper-conserved regions in the hepatitis B virus (HBV) X gene ( HBX ) 5' region that could be candidates for gene therapy. METHODS: The study included 27 chronic hepatitis B treatment-naive patients in various clinical stages (from chronic infection to cirrhosis and hepatocellular carcinoma, both HBeAg-negative and HBeAg-positive), and infected with HBV genotypes A-F and H. In a serum sample from each patient with viremia > 3.5 log IU/mL, the HBX 5' end region [nucleotide (nt) 1255-1611] was PCR-amplified and submitted to next-generation sequencing (NGS)...
May 21, 2018: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29785071/identification-of-cis-regulatory-elements-associated-with-salinity-and-drought-stress-tolerance-in-rice-from-co-expressed-gene-interaction-networks
#15
Pragya Mishra, Nisha Singh, Ajay Jain, Neha Jain, Vagish Mishra, Pushplatha G, Kiran P Sandhya, Nagendra Kumar Singh, Vandna Rai
Rice, a staple food crop, is often subjected to drought and salinity stresses thereby limiting its yield potential. Since there is a cross talk between these abiotic stresses, identification of common and/or overlapping regulatory elements is pivotal for generating rice cultivars that showed tolerance towards them. Analysis of the gene interaction network (GIN) facilitates identifying the role of individual genes and their interactions with others that constitute important molecular determinants in sensing and signaling cascade governing drought and/or salinity stresses...
2018: Bioinformation
https://www.readbyqxmd.com/read/29785034/trophic-overlap-between-expanding-and-contracting-fish-predators-in-a-range-margin-undergoing-change
#16
Mats Westerbom, Antti Lappalainen, Olli Mustonen, Alf Norkko
Climate change is predicted to cause a freshening of the Baltic Sea, facilitating range expansions of freshwater species and contractions of marine. Resident marine flounders (Platichthys flesus) and expansive freshwater roach (Rutilus rutilus) are dominant consumers in the Baltic Sea sublittoral where they occur in partial sympatry. By comparing patterns of resource use by flounders and roach along a declining resource gradient of blue mussels (Mytilus trossulus) our aim was to explore predator functional responses and the degree of trophic overlap...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29785020/glypican-1-immunohistochemistry-does-not-separate-mesothelioma-from-pulmonary-adenocarcinoma
#17
Kenrry Chiu, Lawrence Lee, Simon Cheung, Andrew M Churg
Immunohistochemistry (IHC) is used to help differentiate pleural mesothelioma from pulmonary adenocarcinoma in pleural biopsies and cytology specimens of pleural effusions due to overlapping morphologic features between these two malignancies. The aim of this study is to evaluate IHC glypican-1, a recently proposed marker for epithelioid mesothelioma, in our cohort of mesotheliomas and pulmonary adenocarcinoma. Tissue microarrays with duplicate cores from 33 cases of mesotheliomas (28 epithelioid type and five sarcomatoid type) and 21 cases of pulmonary adenocarcinoma were stained with glypican-1 antibody...
May 21, 2018: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29785013/genetic-identification-of-brain-cell-types-underlying-schizophrenia
#18
Nathan G Skene, Julien Bryois, Trygve E Bakken, Gerome Breen, James J Crowley, Héléna A Gaspar, Paola Giusti-Rodriguez, Rebecca D Hodge, Jeremy A Miller, Ana B Muñoz-Manchado, Michael C O'Donovan, Michael J Owen, Antonio F Pardiñas, Jesper Ryge, James T R Walters, Sten Linnarsson, Ed S Lein, Patrick F Sullivan, Jens Hjerling-Leffler
With few exceptions, the marked advances in knowledge about the genetic basis of schizophrenia have not converged on findings that can be confidently used for precise experimental modeling. By applying knowledge of the cellular taxonomy of the brain from single-cell RNA sequencing, we evaluated whether the genomic loci implicated in schizophrenia map onto specific brain cell types. We found that the common-variant genomic results consistently mapped to pyramidal cells, medium spiny neurons (MSNs) and certain interneurons, but far less consistently to embryonic, progenitor or glial cells...
May 21, 2018: Nature Genetics
https://www.readbyqxmd.com/read/29784921/the-significance-of-deformation-mechanisms-on-the-fracture-behavior-of-phase-reversion-induced-nanostructured-austenitic-stainless-steel
#19
R D K Misra, V S Y Injeti, M C Somani
We describe here the relationship between grain structure, deformation mechanism and fracture characteristics in an austenitic stainless steel. This was accomplished using the novel concept of phase reversion that enabled a wide range of grain size from nanograined/ultrafine grained (NG/UFG) to coarse-grained (CG) regime to be obtained in a single material through change in temperature-time annealing sequence. In the NG/UFG structure, a marked increase in abundance of stacking faults (SFs) and twin density with strain was observed that led to a decrease in the average spacing between adjacent SFs, thus converting stacking faults into twins...
May 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29784839/clonal-spread-in-candida-glabrata-bloodstream-isolates-and-fluconazole-resistance-affected-by-prolonged-exposure-a-12-year-single-center-study-in-belgium
#20
Berdieke Goemaere, Katrien Lagrou, Isabel Spriet, Marijke Hendrickx, Pierre Becker
Candida glabrata is a major cause of candidemia in immunocompromised patients and is characterized by a high-level of fluconazole resistance. In the present study, acquisition of antifungal resistance and potential clonal spread of C. glabrata were explored at a single center over a 12-year period by analyzing 187 independent clinical C. glabrata bloodstream isolates. One strain was found to be micafungin resistant due to a mutation in the FKS2 gene. Fluconazole resistance remained stable throughout the period and was observed in 20 (10...
May 21, 2018: Antimicrobial Agents and Chemotherapy
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