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https://www.readbyqxmd.com/read/28100165/genomic-predictions-for-economically-important-traits-in-brazilian-braford-and-hereford-beef-cattle-using-true-and-imputed-genotypes
#1
Mario L Piccoli, Luiz F Brito, José Braccini, Fernando F Cardoso, Mehdi Sargolzaei, Flávio S Schenkel
BACKGROUND: Genomic selection (GS) has played an important role in cattle breeding programs. However, genotyping prices are still a challenge for implementation of GS in beef cattle and there is still a lack of information about the use of low-density Single Nucleotide Polymorphisms (SNP) chip panels for genomic predictions in breeds such as Brazilian Braford and Hereford. Therefore, this study investigated the effect of using imputed genotypes in the accuracy of genomic predictions for twenty economically important traits in Brazilian Braford and Hereford beef cattle...
January 18, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28100066/identification-of-eggs-from-different-production-systems-based-on-hyperspectra-and-cs-svm
#2
J Sun, S Cong, H Mao, X Zhou, X Wu, X Zhang
1. To identify the origin of table eggs more accurately, a method based on hyperspectral imaging technology was studied. 2. The hyperspectral data of 200 samples of intensive and extensive eggs were collected. Standard normalised variables (SNV) combined with Savitzky-Golay (SG) were used to eliminate noise, then stepwise regression (SWR) was used for feature selection. Grid search algorithm (GS), genetic search algorithm (GA), particle swarm optimisation algorithm (PSO) and cuckoo search algorithm (CS) were applied by support vector machine (SVM) to establish a SVM identification model with the optimal parameters...
January 19, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28099998/a-generalized-levene-s-scale-test-for-variance-heterogeneity-in-the-presence-of-sample-correlation-and-group-uncertainty
#3
David Soave, Lei Sun
We generalize Levene's test for variance (scale) heterogeneity between k groups for more complex data, when there are sample correlation and group membership uncertainty. Following a two-stage regression framework, we show that least absolute deviation regression must be used in the stage 1 analysis to ensure a correct asymptotic χk-12/(k-1) distribution of the generalized scale (gS) test statistic. We then show that the proposed gS test is independent of the generalized location test, under the joint null hypothesis of no mean and no variance heterogeneity...
January 18, 2017: Biometrics
https://www.readbyqxmd.com/read/28097538/the-role-of-glutamine-synthetase-in-energy-production-and-glutamine-metabolism-during-oxidative-stress
#4
Nohaiah Aldarini, Azhar A Alhasawi, Sean C Thomas, Vasu D Appanna
Oxidative stress is known to severely impede aerobic adenosine triphosphate (ATP) synthesis. However, the metabolically-versatile Pseudomonas fluorescens survives this challenge by invoking alternative ATP-generating networks. When grown in a medium with glutamine as the sole organic nutrient in the presence of H2O2, the microbe utilizes glutamine synthetase (GS) to modulate its energy budget. The activity of this enzyme that mediates the release of energy stored in glutamine was sharply increased in the stressed cells compared to the controls...
January 17, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28097474/igf-1r-regulates-the-extracellular-level-of-active-mmp-2-pathological-neovascularization-and-functionality-in-retinas-of-oir-mouse-model
#5
Valeria E Lorenc, Paula V Subirada Caldarone, María C Paz, Darío G Ferrer, José D Luna, Gustavo A Chiabrando, María C Sánchez
In ischemic proliferative diseases such as retinopathies, persistent hypoxia leads to the release of numerous neovascular factors that participate in the formation of abnormal vessels and eventually cause blindness. The upregulation and activation of metalloproteinases (MMP-2 and MMP-9) represent a final common pathway in this process. Although many regulators of the neovascular process have been identified, the complete role of the insulin-like growth factor 1 (IGF-1) and its receptor (IGF-1R) appears to be significantly more complex...
January 17, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28096923/role-of-neutrophil-to-lymphocyte-ratio-in-prediction-of-gleason-score-upgrading-and-disease-upstaging-in-low-risk-prostate-cancer-patients-eligible-for-active-surveillance
#6
Mehmet Ilker Gokce, Semih Tangal, Nurullah Hamidi, Evren Suer, Muhammed Arif Ibis, Yasar Beduk
INTRODUCTION: Active surveillance (AS) is an option for management of low-risk prostate cancer (PCa). However, grade and stage progression is an important consideration. Neutrophil-to-lymphocyte ratio (NLR) is a useful marker of cancer-related inflammation. In this study, we aimed to identify the roles of neutrophil count (NC), lymphocyte count (LC), and NLR to predict Gleason score (GS) upgrading, disease upstaging, and biochemical recurrence rates (BCR) in low-risk PCa patients. METHODS: We retrospectively evaluated data of 210 low-risk PCa patients eligible for AS, but who underwent radical prostatectomy...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28096922/relationship-between-gleason-score-and-apparent-diffusion-coefficients-of-diffusion-weighted-magnetic-resonance-imaging-in-prostate-cancer-patients
#7
Tae Heon Kim, Chan Kyo Kim, Byung Kwan Park, Hwang Gyun Jeon, Byung Chang Jeong, Seong Il Seo, Hyun Moo Lee, Han Yong Choi, Seong Soo Jeon
INTRODUCTION: We assessed the correlation between the apparent diffusion coefficient (ADC) and pathological Gleason score (GS) of prostate cancer patients. METHODS: A total of 125 patients who underwent multiparametric magnetic resonance imaging before radical prostatectomy for prostate cancer were included in this study. ADC values were compared with different GS. We used receiver operating characteristic analysis and determined the ADC cutoff value to differentiate tumours with a GS of 6 from those with a GS ≥7...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28096916/an-audit-of-referral-and-treatment-patterns-of-high-risk-prostate-cancer-patients-in-alberta
#8
Majed Alghamdi, Amandeep Taggar, Derek Tilley, Marc Kerba, Xanthoula Kostaras, Geoffrey Gotto, Michael Sia
INTRODUCTION: We aimed to determine the impact of clinical practice guidelines (CPG) on rates of radiation oncologist (RO) referral, androgen-deprivation therapy (ADT), radiation therapy (RT), and radical prostatectomy (RP) in patients with high-risk prostate cancer (HR-PCa). METHODS: All men >18 years, diagnosed with PCa in 2005 and 2012 were identified from the Alberta Cancer Registry. Patient age, aggregated clinical risk group (ACRG) score, Gleason score (GS), pre-treatment prostate-specific antigen (PSA), RO referral, and treatment received were extracted from electronic medical records...
November 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28094896/characterisation-of-glufosinate-resistance-mechanisms-in-eleusine-indica
#9
Adam Jalaludin, Qin Yu, Peter Zoellner, Roland Beffa, Stephen B Powles
BACKGROUND: An Eleusine indica population has evolved resistance to glufosinate, a major post-emergence herbicide of global agriculture. This population was analysed for target-site (glutamine synthetase) and non-target-site (glufosinate uptake, translocation and metabolism) resistance mechanisms. RESULTS: Glutamine synthetase (GS) activity extracted from susceptible (S) and resistant (R*) plants was equally sensitive to glufosinate inhibition, with IC50 values of 0...
January 17, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28093842/gilbert-syndrome-in-patients-with-type-1-diabetes-prevalence-glycemic-control-and-microalbuminuria
#10
Sigal Singer, Nurit Pilpel, Orit Pinhas-Hamiel
BACKGROUND: Gilbert syndrome (GS) is a common hereditary condition, characterized by intermittent unconjugated hyperbilirubinemia. In adults with type 2 diabetes and GS, a markedly lower prevalence of nephropathy was documented, suggesting a beneficial effect of hyperbilirubinemia. We investigated the prevalence of GS among individuals with type 1 diabetes mellitus (T1DM), and the prevalence of microalbuminuria. METHODS: The prevalence of GS was assessed in 401 (204 female) patients with T1DM, median age 21...
January 17, 2017: Pediatric Diabetes
https://www.readbyqxmd.com/read/28093822/the-role-of-guilt-sensitivity-in-ocd-symptom-dimensions
#11
Gabriele Melli, Claudia Carraresi, Andrea Poli, Donatella Marazziti, Antonio Pinto
: Although some studies have found that guilt may precede, motivate, or be a consequence of obsessive-compulsive disorder (OCD), the relationship between guilt and OCD has been under investigated. The studies that explored the role of trait guilt (guilt propensity) in OCD reported inconsistent findings and failed to support its predictive role. Since it has been suggested that OCD patients perceive guilt in a more threatening manner, it might also be relevant to test to what extent they negatively evaluate the experience of guilt (i...
January 16, 2017: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/28093292/multiparametric-magnetic-resonance-ultrasound-fusion-prostate-biopsy-number-and-spatial-distribution-of-cores-for-a-better-index-tumor-detection-and-characterization
#12
Francesco Porpiglia, Stefano De Luca, Roberto Passera, Agostino De Pascale, Daniele Amparore, Giovanni Cattaneo, Enrico Checcucci, Sabrina De Cillis, Diletta Garrou, Matteo Manfredi, Fabrizio Mele, Enrico Bollito, Cristian Fiori
PURPOSE: to evaluate the minimum cores number for a better index tumor detection, to investigate the best core site and biopsy Gleason Score (GS) heterogeneity within the same index lesion, to optimize the highest GS detection. MATERIALS AND METHODS: 327 patients with negative DRE underwent MRI/TRUS fusion targeted biopsy (TBx) for elevated/rising PSA, and/or ≥1 detectable lesions at multiparametric MRI after previous negative standard biopsy. Depending on the diameter of each index lesion, ≤8 or > 8 mm, four or six cores were taken respectively, according to a well-determined sequence...
January 13, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28093215/melanocortin-4-receptor-constitutive-activity-inhibits-l-type-voltage-gated-calcium-channels-in-neurons
#13
F Agosti, S Cordisco Gonzalez, V Martinez Damonte, M J Tolosa, N Di Siervi, H B Schioth, C Davio, M Perello, J Raingo
The melanocortin 4 receptor (MC4R) is a G protein-coupled receptor (GPCR) that is expressed in several brain nuclei playing a crucial role in the regulation of energy balance controlling the homeostasis of the organism. It displays both agonist-evoked and constitutive activity, and moreover, it can couple to different G proteins. Most of the research on MC4R has been focused on agonist-induced activity, while the molecular and cellular basis of MC4R constitutive activity remains scarcely studied. We have previously shown that neuronal N-type voltage-gated calcium channels (CaV2...
January 13, 2017: Neuroscience
https://www.readbyqxmd.com/read/28089677/global-signal-regression-acts-as-a-temporal-downweighting-process-in-resting-state-fmri
#14
Alican Nalci, Bhaskar D Rao, Thomas T Liu
In resting-state functional MRI (rsfMRI), the correlation between blood oxygenation level dependent (BOLD) signals across different brain regions is used to estimate the functional connectivity of the brain. This approach has led to the identification of a number of resting-state networks, including the default mode network (DMN) and the task positive network (TPN). Global signal regression (GSR) is a widely used pre-processing step in rsfMRI that has been shown to improve the spatial specificity of the estimated resting-state networks...
January 9, 2017: NeuroImage
https://www.readbyqxmd.com/read/28088383/evaluating-the-role-of-astrocytes-on-%C3%AE-estradiol-effect-on-seizures-of-pilocarpine-epileptic-model
#15
Masoumeh Sarfi, Mahmoud Elahdadi Salmani, Iran Goudarzi, Taghi Lashkar Boluki, Kataneh Abrari
Epilepsy with periodic and unpredictable seizures is associated with hippocampal glutamate toxicity and tissue reorganization. Astrocytes play an important role in mediating the neuroprotective effects of estradiol and reducing seizure severity. Accordingly, the protective effects of low and high doses of estradiol on behavioral, astrocytic involvement and neuronal survival aspects of Pilocarpine-induced epilepsy were investigated. Lithium- Pilocarpine (30mg/kg) model was used to provoke epilepsy. Βeta-estradiol (2,40μg/ µl) was injected subcutaneously from 48 before to 48h after seizure induction...
January 11, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28088119/composite-films-of-metal-doped-cos-carbon-allotropes-efficient-electrocatalyst-counter-electrodes-for-high-performance-quantum-dot-sensitized-solar-cells
#16
Seyede Sara Khalili, Hossein Dehghani, Malihe Afrooz
This study reports the enhanced catalytic ability of metal ions-doped CoS and CoS/carbon allotrope counter electrodes (CEs) (synthesized using a successive ionic layer adsorption and reaction (SILAR) method) to improve the power conversion efficiency (η) in quantum dot-sensitized solar cells (QDSSCs). Firstly, doping effects of different metal ions (Mg(2+), Ca(2+), Sr(2+) and Ba(2+)) in the CoS CE on the QDSSCs performance have been investigated. Overall, among the different metal doped CoS CEs, the best energy conversion efficiency of 2...
January 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28086960/the-relationship-between-synovitis-quantified-by-an-ultrasound-7-joint-inflammation-score-and-physical-disability-in-rheumatoid-arthritis-a-cohort-study
#17
Jakub Závada, Petra Hánová, Jana Hurňáková, Lenka Szczuková, Michal Uher, Šárka Forejtová, Martin Klein, Herman Mann, Marta Olejárová, Olga Růžičková, Olga Šléglová, Karel Hejduk, Karel Pavelka
BACKGROUND: Restoring normal physical functioning is a major therapeutic aim in the management of rheumatoid arthritis (RA). It is unknown, whether the extent of synovial inflammation quantified by musculoskeletal ultrasound (US) can predict current or future capacity for physical functioning. To answer this question we investigated the longitudinal relationship between physical function assessed by the health assessment questionnaire (HAQ) and the German 7-joint ultrasound score (US7S) in a prospective cohort of patients with RA...
January 13, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28081511/spatiotemporal-distributions-of-butyltin-compounds-in-various-intertidal-organisms-along-the-samcheok-and-tongyeong-coasts-of-korea
#18
Taewoo Kim, Seungyeon Jeon, Seongjin Hong, Sung Joon Song, Bong-Oh Kwon, Jongseong Ryu, Jong Seong Khim
Thirteen years ago, the Korean Government introduced a regulation prohibiting the use of tributyltin (TBT), which was a component of antifouling paints. A subsequent decline in the concentration of butyltins (BTs) was recorded in seawater and the sediment, however, the current concentration of BTs in biota has not been well documented. The spatiotemporal distribution and concentration of BTs was recorded in biota from 2013 to 2015 along the coasts of Samcheok and Tongyeong using GS/MSD analysis. Crustaceans contained the greatest concentrations of BTs, followed by gastropods, fishes, and bivalves...
January 2, 2017: Chemosphere
https://www.readbyqxmd.com/read/28081288/short-dental-implants-6-mm-versus-long-dental-implants-11-15-mm-in-combination-with-sinus-floor-elevation-procedures-3-year-results-from-a-multi-center-randomized-controlled-clinical-trial
#19
Veronika Pohl, Daniel S Thoma, Katarzyna Sporniak-Tutak, Abel Garcia-Garcia, Thomas D Taylor, Robert Haas, Christoph H F Hämmerle
AIM: To test whether or not the use of short dental implants (6 mm) results in an implant survival rate similar to that with longer implants (11-15 mm) in combination with sinus grafting. METHODS: This multi-center study enrolled 101 patients with partial edentulism in the posterior maxilla and a remaining bone height of 5-7 mm. Included patients were randomly assigned to receive short implants (6 mm; GS / group short) or long implants (11-15 mm) simultaneously with sinus grafting (GG / group graft)...
January 12, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28081272/individual-plasticity-of-the-shade-response-of-the-invasive-solidago-canadensis-in-china
#20
Leshan Du, Haiyan Liu, Ming Yan, Junmin Li, Junsheng Li
To evaluate the population variation, individual plasticity, and local adaptability of Solidago canadensis in response to shade treatment, we conducted a common pots experiment with a total of 150 ramets (5 genets, 15 populations, and 2 treatments) subjected to both control (natural light) and shady treatment (10% of natural light). Shade treatment significantly reduced growth and content of defense metabolites in S. canadensis. Compared to control, shading led to increased height, decreased basal diameter, increased leaf width, increased leaf length, increased chlorophyll content, stronger photosynthetic rate (Pn), stronger stomatal conductance (gs), and lower root to shoot ratio...
2017: PloS One
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