bluuebunny/crossref_metadata_2025_split huggingface dataset:
Consumer understanding of the scope of FDA's prescription drug regulatory oversight: A nationally representative survey
Authors: Sullivan Helen W. , Aikin Kathryn J. , David Kathleen T. , Berktold Jennifer , Stein Karen L. , Hoverman Victoria J. 
Published: December 2019

AbstractPurposeMisperceptions of how the US Food and Drug Administration (FDA) regulates prescription drugs may affect how consumers assess the safety and efficacy of prescription drugs. The study objective was to survey the public on their knowledge of FDA oversight regarding prescription drug approval and advertising.MethodsIn 2017, we conducted a nationally representative mail‐push‐to‐web survey with 1,744 US adults.ResultsAlthough most respondents (86%) knew that FDA approves prescription drugs, we found misperceptions about what that approval means. In addition, few respondents understood FDA oversight of prescription drug advertising, with approximately half of respondents reporting that they did not know whether FDA approved these ads or components of the ads, and several mis‐reporting that FDA approves these ads (31%) or components of the ads (22%‐41%).ConclusionsEnhanced collaboration and communication with the public by key stakeholders in this space could increase public understanding of the roles and responsibilities of FDA.
Attitudes and perceptions of people with a learning disability, family carers, and paid care workers towards cancer screening programmes in the United Kingdom: A qualitative systematic review and meta‐aggregation
Authors: Byrnes Kate , Hamilton Sharon , McGeechan Grant J. , O'Malley Claire , Mankelow Jagjit , Giles Emma L. 
Published: December 2019

AbstractObjectiveEvidence suggests that people with a learning disability (PwLD) are less likely to attend cancer screening than the general population in the United Kingdom. The aim of this systematic review was to identify and synthesise qualitative studies reporting the attitudes and opinions of PwLD, family carers, and paid care workers towards national cancer screening programmes.MethodsFive electronic and two grey literature databases were searched. Fourteen thousand eight hundred forty‐six papers were reviewed against predetermined inclusion criteria. Included papers were critically appraised. Findings were synthesised using meta‐aggregation.ResultsEleven papers met the inclusion criteria, all related to cervical and breast screening. No papers were related to colorectal cancer screening. Findings were clustered into four synthesised findings: (1) supporting women with a learning disability (WwLD) to attend screening, (2) WwLD's awareness of screening and their psychophysical experiences, 3) professional practice barriers including the need for multidisciplinary working and an understanding of the needs of WwLD, and (4) approaches to improve the uptake of cervical and breast cancer screening. The synthesis highlights the significance of WwLD having support to understand the importance of screening to be able to make an informed choice about attending.ConclusionsWwLD may not attend cancer screening due to fear, concerns over pain, and the potential influence of family carers and paid care workers. The review identified practical mechanisms which could help WwLD attend screening. Future research should focus on identifying potential barriers and facilitators as a proactive measure to promote colorectal cancer screening.
The relationship between post‐traumatic stress and post‐traumatic growth in cancer patients and survivors: A systematic review and meta‐analysis
Authors: Marziliano Allison , Tuman Malwina , Moyer Anne 
Published: December 2019

AbstractObjectiveResearch on the relationship between post‐traumatic stress disorder (PTSD)/post‐traumatic stress symptoms (PTSS) and post‐traumatic growth (PTG) in cancer patients and survivors is increasing.MethodsWe conducted a systematic review and meta‐analysis of 51 studies that assessed the relationship between PTSD/PTSS and PTG, in cancer patients/survivors. Five databases were searched through 29 April 2019. The purpose of this manuscript is to report a summary of this literature, the aggregate effect size of the relationship between PTSD and PTG, and the examination of potential moderators that may impact the relationship between PTSD and PTG.ResultsThe aggregate weighted effect size for the association between PTSD/PTSS and PTG was small, r = .08, but significantly different from zero. We examined whether time since diagnosis, stage of cancer, type of measure used to assess PTSD/PTSS, or type of measure used to assess PTG explained the significant heterogeneity among the individual effect sizes. The relationship was significantly stronger for the small subset of studies that included only stage 4 patients compared with those that included only non–stage 4 patients. Additionally, the strongest relationship was for those studies that used the Impact of Events Scale‐Revised to assess PTSD.ConclusionsThe relationship between PTSD/PTSD and PTG is modestly positive and robust. There is evidence that the threat of advanced cancer is more strongly associated with growth, but none supporting that more time since cancer diagnosis allows survivors the opportunity to positively reinterpret and find meaning in the traumatic aspects of the disease resulting in more growth.
Lung deposition of nebulized surfactant in newborn piglets: Nasal CPAP vs Nasal IPPV
Authors: Nord Anders , Linner Rikard , Salomone Fabrizio , Bianco Federico , Ricci Francesca , Murgia Xabi , Schlun Martin , Cunha‐Goncalves Doris , Perez‐de‐Sa Valeria 
Published: December 2019

AbstractBackgroundNasal continuous positive airway pressure support (nCPAP) is the standard of care for prematurely born infants at risk of neonatal respiratory distress syndrome (nRDS). However, nasal intermittent positive pressure ventilation (NIPPV) may be an alternative to nCPAP in babies requiring surfactant, and in conjunction with surfactant nebulization, it could theoretically reduce the need for invasive mechanical ventilation. We compared lung deposition of nebulized poractant in newborn piglets supported by nCPAP or NIPPV.MethodsTwenty‐five sedated newborn piglets (1.2‐2.2 kg) received either nCPAP (3 cmH2O, n = 12) or NIPPV (3 cmH2O positive end expiratory pressure+3 cmH2O inspiratory pressure, n = 13) via custom‐made nasal prongs (FiO2 0.4, Servo‐i ventilator). Piglets received 200 mg kg−1 of technetium‐99m‐surfactant mixture continuously nebulized with a customized eFlow‐Neos investigational vibrating‐membrane nebulizer system. Blood gases were taken immediately before, during, and after nebulization. The deposition was estimated by gamma scintigraphy.ResultsMean surfactant deposition in the lungs was 15.9 ± 11.9% [8.3, 23.5] (mean ± SD [95% CI]) in the nCPAP group and 21.6 ± 10% [15.6, 27.6] in the NIPPV group (P = .20). Respiratory rates were similar in both groups. Minute volume was 489 ± 203 [360, 617] in the nCPAP group and 780 ± 239 [636, 924] mL kg−1 min−1 in the NIPPV group (P = .009). Blood gases were comparable in both groups.ConclusionIrrespective of the noninvasive ventilatory support mode used, relatively high lung deposition rates of surfactant were achieved with nebulization. The amounts of deposited surfactant might suffice to elicit a pulmonary function improvement in the context of nRDS.
Glutaminyl‐tRNA Synthetase from Pseudomonas aeruginosa: Characterization, structure, and development as a screening platform
Authors: Escamilla Yaritza , Hughes Casey A. , Abendroth Jan , Dranow David M. , Balboa Samantha , Dean Frank B. , Bullard James M. 
Published: December 2019

AbstractPseudomonas aeruginosa has a high potential for developing resistance to multiple antibiotics. The gene (glnS) encoding glutaminyl‐tRNA synthetase (GlnRS) from P. aeruginosa was cloned and the resulting protein characterized. GlnRS was kinetically evaluated and the KM and kcatobs, governing interactions with tRNA, were 1.0 μM and 0.15 s−1, respectively. The crystal structure of the α2 form of P. aeruginosa GlnRS was solved to 1.9 Å resolution. The amino acid sequence and structure of P. aeruginosa GlnRS were analyzed and compared to that of GlnRS from Escherichia coli. Amino acids that interact with ATP, glutamine, and tRNA are well conserved and structure overlays indicate that both GlnRS proteins conform to a similar three‐dimensional structure. GlnRS was developed into a screening platform using scintillation proximity assay technology and used to screen ~2,000 chemical compounds. Three inhibitory compounds were identified and analyzed for enzymatic inhibition as well as minimum inhibitory concentrations against clinically relevant bacterial strains. Two of the compounds, BM02E04 and BM04H03, were selected for further studies. These compounds displayed broad‐spectrum antibacterial activity and exhibited moderate inhibitory activity against mutant efflux deficient strains of P. aeruginosa and E. coli. Growth of wild‐type strains was unaffected, indicating that efflux was likely responsible for the lack of sensitivity. The global mode of action was determined using time‐kill kinetics. BM04H03 did not inhibit the growth of human cell cultures at any concentration and BM02E04 only inhibit cultures at the highest concentration tested (400 μg/ml). In conclusion, GlnRS from P. aeruginosa is shown to have a structure similar to that of E. coli GlnRS and two natural product compounds were identified as inhibitors of P. aeruginosa GlnRS with the potential for utility as lead candidates in antibacterial drug development in a time of increased antibiotic resistance.
Context and number of noncanonical repeat variable diresidues impede the design of TALE proteins with improved DNA targeting
Authors: Anderson James T. , Rogers Julia M. , Barrera Luis A. , Bulyk Martha L. 
Published: December 2019

AbstractTranscription activator‐like effector (TALE) proteins have been used extensively for targeted binding of fusion proteins to loci of interest in (epi)genome engineering. Such approaches typically utilize four canonical TALE repeat variable diresidue (RVD) types, corresponding to the identities of two key amino acids, to target each nucleotide. Alternate RVDs with improved specificity are desired. Here, we focused on seven noncanonical RVDs that have been suggested to have improved specificity for their target nucleotides. We used custom protein binding microarrays to characterize the DNA‐binding activity of 65 TALEs containing these alternate or corresponding canonical RVDs at multiple positions to ~5,000 unique DNA sequences per protein. We found that none of the noncanonical thymine‐targeting RVDs displayed stronger preference for thymine than did the canonical RVD. Of the noncanonical RVDs with putatively improved specificity for guanine, only EN and NH showed greater discrimination of guanine over adenine. This improved specificity, however, comes at a cost: more substitutions of a noncanonical RVD for a canonical RVD generally decreased the protein's DNA‐binding activity. Our results highlight the need to investigate RVD‐nucleotide specificities in multiple protein contexts and suggest that a balance between canonical and noncanonical RVDs is needed to build TALEs with improved specificity.
Size‐Dependent Control of Exciton–Polariton Interactions in WS2 Nanotubes
Authors: Sinha Sudarson S. , Zak Alla , Rosentsveig Rita , Pinkas Iddo , Tenne Reshef , Yadgarov Lena 
Published: December 2019

AbstractMultiwall WS2 nanotubes (and fullerene‐like nanoparticles thereof) are currently synthesized in large amounts, reproducibly. Other than showing interesting mechanical and tribological properties, which offer them a myriad of applications, they are recently shown to exhibit remarkable optical and electrical properties, including quasi‐1D superconductivity, electroluminescence, and a strong bulk photovoltaic effect. Here, it is shown that, using a simple dispersion‐fractionation technique, one can control the diameter of the nanotubes and move from pure excitonic to polaritonic features. While nanotubes of an average diameter >80 nm can support cavity modes and scatter light effectively via a strong coupling mechanism, the extinction of nanotubes with smaller diameter consists of pure absorption. The experimental work is complemented by finite‐difference time‐domain simulations, which shed new light on the cavity mode–exciton interaction in 2D materials. Furthermore, transient absorption experiments of the size‐fractionated nanotubes fully confirm the steady‐state observations. Moreover, it is shown that the tools developed here are useful for size control of the nanotubes, e.g., in manufacturing environment. The tunability of the light–matter interaction of such nanotubes offers them intriguing applications such as polaritonic devices, in photocatalysis, and for multispectral sensors.
0D Cs3Cu2X5 (X = I, Br, and Cl) Nanocrystals: Colloidal Syntheses and Optical Properties
Authors: Luo Zhishan , Li Qian , Zhang Liming , Wu Xiaotong , Tan Li , Zou Chao , Liu Yejing , Quan Zewei 
Published: December 2019

Abstract0D lead‐free metal halide nanocrystals (NCs) are an emerging class of materials with intriguing optical properties. Herein, colloidal synthetic routes are presented for the production of 0D Cs3Cu2X5 (X = I, Br, and Cl) NCs with orthorhombic structure and well‐defined morphologies. All these Cs3Cu2X5 NCs exhibit broadband blue‐green photoluminescence (PL) emissions in the range of 445–527 nm with large Stokes shifts, which are attributed to their intrinsic self‐trapped exciton (STE) emission characteristics. The high PL quantum yield of 48.7% is obtained from Cs3Cu2Cl5 NCs, while Cs3Cu2I5 NCs exhibit considerable air stability over 45 days. Intriguingly, as X is changed from I to Br and Cl, Cs3Cu2X5 NCs exhibit a continuous redshift of emission peaks, which is contrary to the blueshift in CsPbX3 perovskite NCs.
Biocomposite Films Based on Phosphorylated Wheat Starch and Cellulose Nanocrystals from Rice, Oat, and Eucalyptus Husks
Authors: Bruni Graziella Pinheiro , de Oliveira Jean Paulo , Fonseca Laura Martins , da Silva Francine Tavares , Dias Alvaro Renato Guerra , da Rosa Zavareze Elessandra 
Published: December 2019

AbstractThere is a worldwide demand for environment‐friendly, biodegradable materials. The objective of this study is to develop biocomposite films using native or phosphorylated wheat starch reinforced with cellulose nanocrystals (CNCs) from three different sources, rice, oat, and eucalyptus husks. The films are evaluated by their morphology, thermal properties, relative crystallinity (RC), water vapor permeability (WVP), and mechanical properties. The high RC of the CNCs increases the RC of biocomposite films. The films produced using native and phosphorylated starches present higher WVP than those incorporated within CNCs. The films without CNCs also present low solubility, remain intact after 24 h of immersion in water under agitation, and resist water absorption. The CNCs incorporation increases the tensile strength of the films. Biocomposite films produced using native starch and oat CNCs yield the highest tensile strength (5.07 ± 0.33 MPa), showing a remarkable increase of 91.3% when compared to the film obtained using native starch (2.65 ± 0.09 MPa). The biocomposite films produced in this study show satisfactory mechanical properties, such as high resistance and flexibility, thereby presenting great potential for application in food industry.
Electrical Methods to Elucidate Charge Transport in Hybrid Perovskites Thin Films and Devices
Authors: Taukeer Khan Mohd , Almohammedi Abdullah , Kazim Samrana , Ahmad Shahzada 
Published: December 2019

AbstractThe panchromatic light absorption and excellent charge carrier transport properties in organo lead halide perovskites allowed to achieve an unprecedented power conversion efficiency in excess of 25 % for thin film photovoltaics fabrication. To understand the underlying phenomena, various comprehensive set of optical and electrical techniques have been employed to investigate the charge carrier dynamics in such devices. In this perspective, we aim to summarize the electrical transport properties of perovskite thin films by using (i) impedance spectroscopy (IS), (ii) space charge limited current (SCLC), (iii) field‐effect transistors (FETs) and (iv) time‐of‐flight (TOF) methods. We have deliberated various equivalent circuit used to model the perovskite solar cells by means of IS. The SCLC technique provide vital electrical parameters such as mobility, activation energy, traps density and distribution, carrier concentration, density of states, etc. The TOF technique measures mobility as a primary parameter while the FETs configuration provide a valuable insight into the in‐plane charge transport in perovskites thin films. We believe that these notable understanding will provide insights into charge carrier dynamics in perovskite materials and devices.
Design of Advanced Functional Materials Using Nanoporous Single‐Site Photocatalysts
Authors: Mori Kohsuke , Qian Xufang , Kuwahara Yasutaka , Horiuchi Yu , Kamegawa Takashi , Zhao Yixin , Louis Catherine , Yamashita Hiromi 
Published: December 2019

AbstractNanoporous silica solids can offer opportunities for hosting photocatalytic components such as various tetra‐coordinated transition metal ions to form systems referred to as “single‐site photocatalysts”. Under UV/visible‐light irradiation, they form charge transfer excited states, which exhibit a localized charge separation and thus behave differently from those of bulk semiconductor photocatalysts exemplified by TiO2. This account presents an overview of the design of advanced functional materials based on the unique photo‐excited mechanisms of single‐site photocatalysts. Firstly, the incorporation of single‐site photocatalysts within transparent porous silica films will be introduced, which exhibit not only unique photocatalytic properties, but also high surface hydrophilicity with self‐cleaning and antifogging applications. Secondary, photo‐assisted deposition (PAD) of metal precursors on single‐site photocatalysts opens up a new route to prepare nanoparticles. Thirdly, visible light sensitive photocatalysts with single and/or binary oxides moieties can be prepared so as to use solar light, the ideal energy source.
Enhancing cancer therapeutic efficacy through ultrasound‐mediated micro‐to‐nano conversion
Authors: Hameed Sadaf , Zhang Miaomiao , Bhattarai Pravin , Mustafa Ghulam , Dai Zhifei 
Published: December 2019

AbstractOver the last century, significant progress has been made towards the development of microbubbles (MBs) as a contrast agent for imaging and as a carrier for the delivery of therapeutic moieties. The unparalleled ability of MBs to respond to ultrasound (US) render them advantageous for molecular imaging, and US‐responsive targeted delivery. However, the use of MBs has broadened far beyond the imaging contrast agent or drug delivery system alone. Notably, there has been an enormous surge in the design and fabrication of multimodal MBs for cancer therapy. Furthermore, MBs in the presence of the US has unique ability to convert itself from the micro to nanoscale, which offers diagnostic and therapeutic ability in both dimensions. In this review, we summarize the design considerations of MBs, with particular emphasize on their size and composition. In addition, different MBs formulations are discussed in the context of their current progress as an imaging contrast agent and a vehicle for drug/gene delivery. We further highlight recent advancements in the micro‐to‐nano conversion of MBs and their potential application for cancer theranostics.This article is characterized under:
Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease
Therapeutic Approaches and Drug Discovery > Emerging Technologies
Assessment of health-related quality of life in patients with cystinuria on tiopronin therapy
Authors: Modersitzki Frank , Goldfarb David S. , Goldstein Ross L. , Sur Roger L. , Penniston Kristina L. 
Published: December 2019

AbstractCystinuria comprises less than 1% of kidney stones and is associated with impaired health-related quality of life (HRQOL). Limited evidence is available regarding HRQOL of patients with cystinuria treated with tiopronin (Thiola®). The objective of this study was to assess the HRQOL of patients with or without tiopronin treatment. For this cross-sectional survey, patients on tiopronin treatment were recruited through the “Thiola® Total Care Hub,” a specialty pharmacy used to dispense tiopronin, and compared with patients not taking tiopronin (non-tiopronin group) who were identified from the Cystinuria Contact Registry at New York University School of Medicine. Consented patients responded to a survey that included questions about their experiences with kidney stones, the Wisconsin stone quality of life (WISQOL) (disease-specific) questionnaire, and the short form-36 version 2 (SF-36v2) (generic) HRQOL questionnaire. Statistical analyses included independent-sample t tests, one-way analysis of variance (ANOVA), and correlations. The survey was completed by 312 patients: 267 in the tiopronin group (144 male, 123 female; mean 49 years) and 45 in the non-tiopronin group (10 male, 35 female; mean 48 years). Both groups utilized pain medications similarly (24% overall). Patients on tiopronin had a significantly better HRQOL than patients not on tiopronin for all WISQOL domains (p < 0.001) and all but the physical functioning SF-36v2 domain (p < 0.001), where both groups approached the US normative mean, when controlling for the last stone event. Compared with patients in the non-tiopronin group, patients taking tiopronin reported better HRQOL on both the WISQOL and SF-36v2.
Swedish national survey on MR safety compared with CT: a false sense of security?
Authors: Hansson Boel , Olsrud Johan , Wilén Jonna , Owman Titti , Höglund Peter , Björkman-Burtscher Isabella M. 
Published: December 2019

Abstract
Objectives
The objectives were to survey MR safety incidents in Sweden during a 12-month period, to assess severity scores, and to evaluate the confidence of MR personnel in incident-reporting mechanisms.

Method
Data were collected within a web-based questionnaire on safety in clinical MR environments with CT for comparison. Data reported MR and CT safety incidents (human injury, material damage, and close calls), incident severity, and confidence of participants in incident-reporting systems.

Results
The study population consisted of 529 eligible participants. Participants reported 200 MR and 156 CT safety incidents. Among MR incidents, 16% were given the highest potential severity score. More MR workers (73%) than CT workers (50%) were confident in being aware of any incident occurring at their workplace. However, 69% MR workers (83% for CT) were not aware of reported incidents at their hospitals.

Conclusion
Safety incidents resulting in human injury, material damage, and close calls in clinical MR environments do occur. According to national risk assessment recommendations, risk level is high. Results indicated that MR personnel tend to a false sense of security, as a high proportion of staff members were sure that they would have been aware of any incident occurring in their own department, while in reality, incidents did occur without their knowledge. We conclude that false sense of security exists for MR.

Key Points
• Safety incidents in clinical MR environments still result in human injury and material damage.
• Severity level of MR incidents—assessed using Swedish national risk assessment recommendations—is high.
• Confidence of MR personnel in incident-reporting mechanisms is high, but reflects a false sense of security, as a high proportion of staff is unaware of reported incidents in the same workplace.