bluuebunny/crossref_metadata_2025_split huggingface dataset:
The influence of dietary energy and zinc source and concentration on performance, trace mineral status, and gene expression of beef steers
Authors: Carmichael-Wyatt Remy N , Genther-Schroeder Olivia N , Hansen Stephanie L 
Published: November 2020

AbstractThe objective of this study was to determine the effects of increased supplemental Zn from differing sources on growth performance of steers fed diets differing in net energy. Angus steers (n = 72, 324 ± 2.1 kg) with Genemax gain scores of 3, 4, or 5 were blocked by BW and stratified by Genemax gain score into 12 pens of 6 steers each for 158 d. Pens were randomly assigned to 1 of 3 Zn treatments (ZNTRT): 1) control (no supplemental Zn, analyzed 33 mg Zn/kg DM; CON); 2) inorganic Zn (CON + 120 mg supplemental Zn/kg DM as ZnSO4 for entire trial; INZN); or 3) 120 mg supplemental Zn/kg DM as Zn-amino acid complex (Availa-Zn; Zinpro, Eden Prairie, MN) for first 60 d, then a blend of ZnSO4 and Zn-AA complex (CON + 60 mg supplemental Zn/kg DM as ZnSO4 + 60 mg supplemental Zn/kg DM as Zn-amino acid complex) for the remainder of the trial (ZNBLD). Two dietary energy strategies (ENERGY) were formulated to reach ADG rates of 1) 1.6 kg/d (LE) or 2) 2.0 kg/d (HE) utilizing a 3 × 2 factorial arrangement (12 steers/treatment). All steers were fed LE for a 60 d growing period, then pens were randomly assigned to ENERGY treatments fed the remaining 91 d. Day 60 BW tended to be greater (P = 0.07) in steers receiving supplemental Zn vs. CON. Liver Cu was decreased in Zn supplemented steers vs. CON (P = 0.02). Liver Zn concentrations on d 56 did not differ for Zn vs. CON (P = 0.22) nor were there differences due to Zn source (P = 0.98). There were or tended to be ZNTRT × ENERGY effects for d 67–90 ADG and G:F (P ≤ 0.01), and d 122 BW and d 90–122 G:F (P ≤ 0.10) driven by improved performance for ZNBLD-HE over ZNBLD-LE, while ENERGY within CON and INZN did not differ. Day 90–122 ADG, overall ADG and overall G:F was greater (P ≤ 0.02) and d 67–90 G:F tended to be greater (P = 0.10) for HE vs. LE. No ZNTRT × ENERGY or ZNTRT effects were detected for HCW, REA, BF, KPH, MS, or YG (P ≥ 0.37) while HE increased HCW, BF, MS, and YG compared with LE (P ≤ 0.05). In the liver, ZNTRT affected d 97 MT1A expression (P = 0.03) where INZN was greater than ZNBLD or CON (P ≤ 0.02), while ZIP14 was unaffected due to ZNTRT, ENERGY, or the interaction (P ≥ 0.39). Supplying supplemental Zn as ZNBLD during the transition period appeared to improve performance measures, but no final performance advantages were noted due to increased supplemental Zn, regardless of source. Additionally, differences in liver MT1A expression may indicate differing post-absorptive metabolism between Zn sources.
Silver nanoparticles achieve cytotoxicity against breast cancer by regulating long-chain noncoding RNA XLOC_006390-mediated pathway
Authors: Tao Lin , Chen Xi , Sun Jiawei , Wu Changjun 
Published: November 2020

Abstract
The specific cytotoxic effect of nanoparticles on tumor cells may be used in future antitumor clinical applications. Silver nanoparticles (AgNPs) have been reported to have potent cytotoxic effect, but the mechanism is unclear. Here, AgNPs were synthesized, and the particle average size was 63.1 ± 8.3 nm and showed a nearly circular shape, which were determined by transmission electron microscopy and field emission scanning electron microscopy. The selected area electron diffraction patterns showed that the nanoparticles were crystalline. The energy-dispersive X-ray spectrum proved that silver is the main component of nanoparticles. The AgNPs showed potent cytotoxicity in breast cancer cells, no matter whether they were tamoxifen sensitive or resistant. Next, we found that a long noncoding RNA, XLOC_006390, was decreased in AgNPs-treated breast cancer cells, coupled to inhibited cell proliferation, altered cell cycle and apoptotic phenotype. Downstream of AgNPs, XLOC_006390 was recognized to target miR-338-3p and modulate the SOX4 expression. This signaling pathway also mediates the AgNPs function of sensitizing tamoxifen-resistant breast cancer cells to tamoxifen. These results provide a new clue for the antitumor mechanism of AgNPs, and a new way for drug development by using AgNPs.
Association of the transthyretin variant V122I with polyneuropathy among individuals of African descent
Authors: Parker Margaret M. , Damrauer Scott M. , Tcheandjieu Catherine , Erbe David , Aldinc Emre , Hawkins Philip N. , Gillmore Julian D. , Hull Leland E. , Lynch Julie A. , Joseph Jacob , Ticau Simina , Flynn-Carroll Alexander O. , Deaton Aimee M. , Ward Lucas D. , Assimes Themistocles L. , Tsao Philip S. , Chang Kyong-Mi , Rader Daniel J. , Fitzgerald Kevin , Vaishnaw Akshay K. , Hinkle Gregory , Nioi Paul 
Published: November 2020

IntroductionHereditary transthyretin-mediated (hATTR) amyloidosis is an underdiagnosed, progressively debilitating disease caused by mutations in the transthyretin (TTR) gene. The V122I variant, one of the most common pathogenic TTR mutations, is found in 3-4% of Black individuals, and has been associated with cardiomyopathy.MethodsTo better understand the phenotypic consequences of carrying V122I, we conducted a phenome-wide association study scanning 427 ICD diagnosis codes for association with this variant in Black participants of the UK Biobank (n= 6,062). Significant associations were tested for replication in the Penn Medicine Biobank (n= 5,737) and the Million Veteran Program (n= 82,382).ResultsOur analyses discovered a significant association between V122I and polyneuropathy diagnosis (odds ratio = 6.4, 95% confidence interval [CI] = 2.6 to 15.6, P = 4.2 × 10−5) in the UK Biobank,which was replicated in the Penn Medicine Biobank (p=6.0×10−3)) and Million Veteran Program (P= 1.8×10−4)). Polyneuropathy prevalence among V122I carriers was 2.1–9.0% across biobanks. The cumulative incidence of common hATTR amyloidosis manifestations (carpal tunnel syndrome, polyneuropathy, cardiomyopathy, heart failure) was significantly enriched in V122I carriers versus non-carriers (hazard ratio = 2.8, 95% CI = 1.7–4.5, P = 2.6 × 10−5) in the UK Biobank;37.4% of V122I carriers having a diagnosis of any one of these manifestations by age 75.ConclusionsOur findings show that, although the V122I variant is known to be associated with cardiomyopathy, carriers are also at significantly increased risk of developing polyneuropathy. These results also emphasize the underdiagnosis of disease in V122I carriers with a significant proportion of subjects showing phenotypic changes consistent with hATTR. Greater understanding of the manifestations associated with V122I is critical for earlier diagnosis and treatment.
Inequalities in antenatal care coverage and quality: an analysis from 63 low and middle-income countries using the ANCq content-qualified coverage indicator
Authors: Arroyave Luisa , Saad Ghada E , Victora Cesar G , Barros Aluisio J D 
Published: November 2020

AbstractObjectiveto conduct a global analysis of socioeconomic inequalities in antenatal care (ANC) using national surveys from low- and middle-income countries.MethodsANC was measured using the ANCq, a novel content-qualified ANC coverage indicator, created and validated using national surveys, based upon contact with the health services and content of care received. We performed stratified analysis to explore the socioeconomic inequalities in ANCq. We also estimated the slope index of inequality, which measures the difference in coverage along the wealth spectrum.ResultsWe analyzed 63 national surveys carried out from 2010 to 2017. There were large inequalities between and within countries. Higher ANCq scores were observed among women living in urban areas, with secondary or more level of education, belonging to wealthier families and with higher empowerment in nearly all countries. Countries with higher ANCq mean presented lower inequalities; while countries with average ANCq scores presented wide range of inequality, with some managing to achieve very low inequality.ConclusionsDespite all efforts in ANC programs, important inequalities in coverage and quality of ANC services persist. If maternal and child mortality Sustainable Development Goals are to be achieved, those gaps we documented must be bridged.
Age differential analysis of COVID-19 second wave in Europe reveals highest incidence among young adults
Authors: Aleta Alberto , Moreno Yamir 
Published: November 2020

AbstractMost of the western nations have been unable to suppress the COVID-19 and are currently experiencing second or third surges of the pandemic. Here, we analyze data of incidence by age groups in 25 European countries, revealing that the highest incidence of the current second wave is observed for the group comprising young adults (aged 18-29 years old) in all but 3 of the countries analyzed. We discuss the public health implications of our findings.
Failure of VITEK2 to reliably detectvanB- mediated vancomycin resistance inEnterococcus faecium
Authors: Walker Sarah V. , Wolke Martina , Plum Georg , Weber Robert E. , Werner Guido , Hamprecht Axel 
Published: November 2020

AbstractObjectivesThe increasing prevalence of vancomycin resistant enterococci (VRE) necessitates a reliable detection of VRE especially for low level resistance mediated byvanBinEnterococcus faecium. In this prospective study we analyzed ifvanBmediated vancomycin resistance can be reliably detected by Vitek2.Methods1344 enterococcal isolates from routine clinical specimens were tested by Vitek2 (bioMérieux, Nürtingen, Germany). Additionally, a bacterial suspension (0.5 McFarland) was inoculated on a chromID VRE screening agar (bioMérieux) and incubated for 48 hours. If vancomycin was tested susceptible by Vitek2 but growth was detected on the screening agar a PCR forvanA/vanBwas performed (GeneXpertvanA/Btest kit, Cepheid, Frankfurt, Germany). MICs of vancomycin susceptible by Vitek butvanA/Bpositive isolates were determined before and after cultivation in a broth with increasing concentration of vancomycin.Results156/492 ofE. faeciumwere VRE, predominantlyvanB(87.0%) of which 14 were not identified as VRE by Vitek2 (sensitivity 91.0%). The majority (9/14) demonstrated high-level MICs by broth dilution. Even after exposure to increasing vancomycin concentrations MICs remained nearly identical. Three of the undetected isolates demonstrated initial growth on chromID VRE, after the vancomycin exposure additional 7 isolates demonstrated growth on chromID VRE.ConclusionsVitek2 fails to detectvanBmediated vancomycin resistance consistently, especially but not limited to low-level resistance. As this may lead to treatment failure and further dissemination of vanB VRE, additional methods (e.g. culture on VRE screening agar or PCR) are necessary to reliably identifyvanB-positive enterococci in clinical routine.
Association of Herpesvirus Response Burden with Long-Term Mortality Differs Between Older Males and Females
Authors: Strandberg Timo E , Seppänen Mikko , Pitkälä Kaisu H , Kivimäki Mika , Tienari Pentti J 
Published: November 2020

AbstractBackgroundSex-specific immune responses may contribute to variable vulnerability for Covid-19 between females and males. We tested whether there is a long-term mortality difference between sexes for other microbes (viral and bacterial) response burden among older people.MethodsSeven-year follow-up study consisted of 382 home-dwelling people aged 75-90 years (65.2% females) with a history cardiovascular disease. At baseline, serum immunoglobulin G antibodies were assayed against herpesviruses (CMV, HSV-1 and HSV-2) and bacteria (Chlamydophila pneumoniae, Mycoplasma pneumonia, and Helicobacter pylori). Titers were summed up as herpes (HB) or bacterial response burden (BB) and divided into tertiles. Hazard ratios (HR) of total mortality with 95% CIs were calculated using Cox regression.ResultsThe overall HB was lower and BB higher among males than females (P<0.001). There was a significant sex/HB (P=0.01) and sex/BB (P=0.03) interaction with mortality. Multivariable-adjusted (age, body mass index, C-reactive protein, and comorbidity index) mortality HRs for increasing HB sex-specific tertiles were 1.0 (reference), 1.34 (95% CI 0.62-2.88), and 2.66 (1.25-5.64) for males and 1.0, 1.30 (0.76-2.21), and 1.30 (0.77-2.22) for females. The significant age-adjusted association between BB and mortality in males attenuated after multivariable adjustments, HR (top-vs-bottom tertile) 1.74 (0.93-3.25). In females, no association with BB was observed. Using HB and BB as continuous variables supported the findings with tertiles.ConclusionsAlthough being lower in older males than females, higher Herpesviridae response burden was associated with increased 7-year mortality risk among males, not among females. Immune responses to common microbes may contribute to sex differences in longevity and mortality.Key points-Gender differences in vulnerability during Covid-19 has increased interested in sex-related responses to infections-We used IgG titers of Herpesviridae and bacteria as surrogate markers for variably recurrent reactivation-Although Herpesviridae response burden was generally lower among males than females, within sexes higher Herpesviridae burden strongly predicted 7-year mortality among males but not females-Long-term virus burden, like Herpesviridae, may partly explain shorter longevity and higher mortality among males with weaker immune systems
Comparison of seven commercial SARS-CoV-2 rapid Point-of-Care Antigen tests
Authors: Corman Victor M. , Haage Verena Claudia , Bleicker Tobias , Schmidt Marie Luisa , Mühlemann Barbara , Zuchowski Marta , Jó Lei Wendy Karen , Tscheak Patricia , Möncke-Buchner Elisabeth , Müller Marcel A. , Krumbholz Andi , Drexler Jan Felix , Drosten Christian 
Published: November 2020

AbstractBackgroundAntigen point of care tests (AgPOCT) can accelerate SARS-CoV-2 testing. As first AgPOCT are becoming available, there is a growing interest in their utility and performance.MethodsHere we compare AgPOCT products by seven suppliers: the Abbott Panbio™ COVID-19 Ag Rapid Test; the RapiGEN BIOCREDIT COVID-19 Ag; the Healgen® Coronavirus Ag Rapid Test Cassette (Swab); the Coris Bioconcept Covid.19 Ag Respi-Strip; the R-Biopharm RIDA®QUICK SARS-CoV-2 Antigen; the NAL von minden NADAL COVID19-Ag Test; and the Roche/SD Biosensor SARS-CoV Rapid Antigen Test. Tests were evaluated on recombinant nucleoprotein, cultured endemic and emerging coronaviruses, stored clinical samples with known SARS-CoV-2 viral loads (n=138), stored samples from patients with respiratory agents other than SARS-CoV-2 (n=100), as well as self-sampled swabs from healthy volunteers (n=35).FindingsLimits of detection in six of seven tested products ranged between 2.08 × 106 and 2.88 × 107 copies per swab, the outlier at 1.58 × 1010 copies per swab. Specificities ranged between 98.53% and 100% in five products, with two outliers at 94.85% and 88.24%. False positive results were not associated with any specific respiratory agent. As some of the tested AgPOCT were early production lots, the observed issues with specificity are unlikely to persist.InterpretationThe sensitivity range of most AgPOCT overlaps with viral load figures typically observed during the first week of symptoms, which marks the infectious period in the majority patients. AgPOCTs with a limit of detection that approximates the virus concentration above which patients are infectious may enable shortcuts in decision-making in various areas of healthcare and public health.
Type 2 diabetes as a determinant of Parkinson’s disease risk and progression
Authors: Chohan Harneek , Senkevich Konstantin , Patel Radhika K , Bestwick Jonathan P , Jacobs Benjamin M , Ciga Sara Bandres , Gan-Or Ziv , Noyce Alastair J 
Published: November 2020

ABSTRACTObjectiveTo investigate type 2 diabetes mellitus (T2DM) as a determinant of Parkinson’s disease (PD) through a meta-analysis of observational and genetic summary data.MethodsA systematic review and meta-analysis of observational studies was undertaken by searching six databases. We selected the highest quality studies investigating the association of T2DM with PD risk and progression. We then used Mendelian randomization (MR) to investigate causal effects of genetic liability towards T2DM on PD risk and progression, using summary data derived from genome-wide association studies.ResultsIn the observational part of the study, nine studies were included in the risk meta-analysis and four studies were included in the progression meta-analysis. Pooled effect estimates revealed that T2DM was associated with an increased risk of PD (OR 1.21, 95% CI 1.07-1.36), and there was some evidence that T2DM was associated with faster progression of motor symptoms (SMD 0.55, 95% CI 0.39-0.72) and cognitive decline (SMD −0.92, 95% CI −1.50 – −0.34). Using MR we found supportive evidence for a causal effect of diabetes on PD risk (IVW OR 1.08, 95% CI 1.02-1.14; p=0.010) and some evidence of an effect on motor progression (IVW OR 1.10, 95% CI 1.01-1.20; p=0.032), but not for cognitive progression.ConclusionUsing meta-analysis of traditional observational studies and genetic data, we observed convincing evidence for an effect of T2DM on PD risk, and new evidence to support a role in PD progression. Treatment of diabetes may be an effective strategy to prevent or slow progression of PD.
Association of Obstructive Sleep Apnea and severity of COVID-19: A hospital based observational study
Authors: Kar Avishek , Saxena Khushboo , Goyal Abhishek , Pakhare Abhijit , Khurana Alkesh , Saigal Saurabh 
Published: November 2020

AbstractIntroductionOSA has been postulated to be associated with mortality in COVID19, but studies are lacking thereof. This study was done to estimate prevalence of OSA in patients with COVID-19 using various screening questionnaires and to assess effect of OSA on outcome of disease.MethodologyIn this prospective observational study, consecutive patients with RTPCR confirmed COVID 19 patients were screened for OSA by different questionnaires (STOPBANG, Berlin Questionnaire, NoSAS and Epworth Scale). Association between OSA and outcome (mortality) and requirement for respiratory support was assessed.ResultsIn study of 213 patients; screening questionnaires for OSA {STOPBANG, Berlin Questionnaire (BQ), NoSAS} were more likely to be positive in patients who died compared to patients who survived. On binary logistic yregression analysis, age≥55 and STOPBANG score ≥5 were found to have small positive but independent effect on mortality even after adjusting for other variables. Proportion of patients who were classified as high risk for OSA by various OSA screening tools significantly increased with increasing respiratory support (p<0.001 for STOPBANG, BQ, ESS and p=0.004 for NoSAS).ConclusionThis is one of the first prospective studies of sequentially hospitalized patients with confirmed COVID 19 status who were screened for possible OSA. This study shows that OSA could be an independent risk factor for poor outcome in patients with COVID19.
Polygenic transcriptome risk scores improve portability of polygenic risk scores across ancestries
Authors: Liang Yanyu , Pividori Milton , Manichaikul Ani , Palmer Abraham A. , Cox Nancy J. , Wheeler Heather , Im Hae Kyung 
Published: November 2020

AbstractPolygenic risk scores (PRS) are on course to translate the results of genome-wide association studies (GWAS) into clinical practice. To date, most GWAS have been based on individuals of European-ancestry, meaning that the utility of PRS for non-European populations is limited because SNP effects and LD patterns may not be conserved across populations. We hypothesized that cross population prediction at the level of genes rather than SNPs would be more effective, since the effect of genes on traits is likely to be more highly conserved. Therefore, we developed a framework to convert effect sizes at SNPs into effect sizes for genetically predicted transcript abundance, which we used for prediction in non-European populations. We compared this approach, which we call polygenic transcriptome risk scores (PTRS), to PRS, using data from 17 quantitative traits that were measured in multiple ancestries (European, African, East Asian, and South Asian) by UK Biobank. On average, PTRS using whole blood predicted transcriptome had lower absolute prediction accuracy than PRS, as we expected since not all regulatory processes were captured by a single tissue. However, as hypothesized, we found that in the African target set, the portability (prediction accuracy relative to the European reference set) was significantly higher for PTRS than PRS (p=0.03) with additional gain when transcriptomic prediction models ancestry matched the target population (p=0.021). Taken together, our results suggest that using PTRS can improve prediction in underrepresented populations and that increasing the diversity of transcriptomic data may be an effective way to improve portability of GWAS results between populations and help reduce health disparities.
Rhipicephalus microplusand its vector-borne haemoparasites in Guinea: further species expansion in West Africa
Authors: Makenov MT , Toure AH , Korneev MG , Sacko N , Porshakov AM , Yakovlev SA , Radyuk EV , Zakharov KS , Shipovalov AV , Boumbaly S , Zhurenkova OB , Grigoreva YaE , Morozkin ES , Fyodorova MV , Boiro MY , Karan LS 
Published: November 2020

AbstractRhipicephalus microplusis an ixodid tick with a pantropical distribution that represents a serious threat to livestock. West Africa was free of this tick until 2007, when its introduction into Benin was reported. Shortly thereafter, the further invasion of this tick into West African countries was demonstrated. In this paper, we describe the first detection ofR. microplusin Guinea and list the vector-borne haemoparasites that were detected in the invader and indigenousBoophilusspecies.In 2018, we conducted a small-scale survey of ticks infesting cattle in three administrative regions of Guinea: N`Zerekore, Faranah, and Kankan. The tick species were identified by examining their morphological characteristics and by sequencing their COI gene and ITS-2 gene fragments.R. micropluswas found in each studied region. In the ticks, we found DNA ofBabesia bigemina,Anaplasma marginale, Anaplasma platys, andEhrlichia spp. The results of this study indicate thatR. micropluswas introduced into Guinea with cows from Mali and/or Ivory Coast.