bluuebunny/crossref_metadata_2025_split huggingface dataset:
“You think you got it down and then the moment comes”: The certainty of uncertainty in end-of-life decision making
Authors: Clair Catherine A. , Abshire Saylor Martha , Nolan Marie T. , Gallo Joseph J. 
Published: August 2022

AbstractObjectivesSome observers have proposed that physicians may die differently compared with the average patient. Semi-structured interviews with family members of physicians who died offer an opportunity to better understand how patient preferences and wishes are perceived and acted on by family members at the end of life. The decision-making experiences of these family members for a loved one who was a physician may have implications for the lay person at end of life.MethodsThe Johns Hopkins Precursors Study includes individuals who matriculated into the graduating classes of 1948 to 1964 of the Johns Hopkins University School of Medicine. From this cohort, we interviewed 26 family members of physicians who died. Interviews were coded and analyzed using a comparative, iterative process.ResultsWe found that family members of physicians who died described the uncertainty at end of life. This overarching theme was organized into the following: (a) the certainty of uncertainty; (b) the preparation for uncertainty; and (c) brokering of decisions in the face of uncertainty. Despite careful end-of-life preparation by well-informed physicians, family members were still left to broker decisions as they navigated the wishes of the physician and what the family and medical care team believed to be in the best interest of the physician.Significance of resultsOur findings suggest that our family members were not immune to uncertainty. The clinical momentum at the end of life may contribute to challenges faced by patients and family members when brokering decisions. Normalizing uncertainty in medical training and for families may aid in addressing the stress of uncertainty at end of life.
Strengthening health system governance in Germany: looking back, planning ahead
Authors: Schmitt Tugce , Haarmann Alexander , Shaikh Mujaheed 
Published: August 2022

AbstractHealth system governance has been receiving increasing attention in health system research since the 1980s. The contemporary challenges that the German health system is faced with are often closely linked to governance issues. Although Germany has the highest health expenditure as a share of Gross Domestic Product (GDP) in the European Union (EU), the spending on healthcare is out of proportion to the health outcomes of the population. The reason for this lies mainly in the complexity of the German health system which is hard to steer due to several administrative levels in the country and numerous policy actors to whom the decision-making power on healthcare provision is delegated. In this paper, we present the results of focus group discussions on governance and build upon the insights gained through theNeustartproject of the Robert Bosch Foundation. Based on an internationally recognised health governance framework from the World Health Organization (WHO), experts who work in, on or for the German health system addressed health governance challenges. They provided evidence-based recommendations for the new legislative period (2021-2025) on transparency, accountability, participation, integrity and capacity of the German health system.
Transcriptomic diversity in human medullary thymic epithelial cells
Authors: Carter Jason A. , Strömich Léonie , Peacey Matthew , Chapin Sarah R. , Velten Lars , Steinmetz Lars M. , Brors Benedikt , Pinto Sheena , Meyer Hannah V. 
Published: August 2022

AbstractThe induction of central T cell tolerance in the thymus depends on the presentation of peripheral self-epitopes by medullary thymic epithelial cells (mTECs). This promiscuous gene expression (pGE) drives mTEC transcriptomic diversity, with non-canonical transcript initiation, alternative splicing, and expression of endogenous retroelements (EREs) representing important but incompletely understood contributors. Here we map the expression of genome-wide transcripts in immature and mature human mTECs using high-throughput 5’ cap and RNA sequencing. Both mTEC populations show high splicing entropy, potentially driven by the expression of peripheral splicing factors. During mTEC maturation, rates of global transcript mis-initiation increase and EREs enriched in long terminal repeat retrotransposons are up-regulated, the latter often found in proximity to differentially expressed genes. As a resource, we provide an interactive public interface for exploring mTEC transcriptomic diversity. Our findings therefore help construct a map of transcriptomic diversity in the healthy human thymus and may ultimately facilitate the identification of those epitopes which contribute to autoimmunity and immune recognition of tumor antigens.
Iron mobilization during lactation reduces oxygen stores in a diving mammal
Authors: Shero Michelle R. , Kirkham Amy L. , Costa Daniel P. , Burns Jennifer M. 
Published: August 2022

AbstractThe profound impacts that maternal provisioning of finite energy resources has on offspring survival have been extensively studied across mammals. This study shows that in addition to calories, high hemoprotein concentrations in diving mammals necessitates exceptional female-to-pup iron transfer. Numerous indices of iron mobilization (ferritin, serum iron, total-iron-binding-capacity, transferrin saturation) were significantly elevated during lactation in adult female Weddell seals (Leptonychotes weddellii), but not in skip-breeders. Iron was mobilized from endogenous stores for incorporation into the Weddell seal’s milk at concentrations up to 100× higher than terrestrial mammals. Such high rates of iron offload to offspring drew from the female’s own heme stores and led to compromised physiologic dive capacities (hemoglobin, myoglobin, and total body oxygen stores) after weaning their pups, which was further reflected in shorter dive durations. We demonstrate that lactational iron transfer shapes physiologic dive thresholds, identifying a cost of reproduction to a marine mammal.
Multiplex base editing to convert TAG into TAA codons in the human genome
Authors: Chen Yuting , Hysolli Eriona , Chen Anlu , Casper Stephen , Liu Songlei , Yang Kevin , Liu Chenli , Church George 
Published: August 2022

AbstractWhole-genome recoding has been shown to enable nonstandard amino acids, biocontainment and viral resistance in bacteria. Here we take the first steps to extend this to human cells demonstrating exceptional base editing to convert TAG to TAA for 33 essential genes via a single transfection, and examine base-editing genome-wide (observing ~40 C-to-T off-target events in essential gene exons). We also introduce GRIT, a computational tool for recoding. This demonstrates the feasibility of recoding, and highly multiplex editing in mammalian cells.
Systematic strategies for developing phage resistant Escherichia coli strains
Authors: Zou Xuan , Xiao Xiaohong , Mo Ziran , Ge Yashi , Jiang Xing , Huang Ruolin , Li Mengxue , Deng Zixin , Chen Shi , Wang Lianrong , Lee Sang Yup 
Published: August 2022

AbstractPhages are regarded as powerful antagonists of bacteria, especially in industrial fermentation processes involving bacteria. While bacteria have developed various defense mechanisms, most of which are effective against a narrow range of phages and consequently exert limited protection from phage infection. Here, we report a strategy for developing phage-resistant Escherichia coli strains through the simultaneous genomic integration of a DNA phosphorothioation-based Ssp defense module and mutations of components essential for the phage life cycle. The engineered E. coli strains show strong resistance against diverse phages tested without affecting cell growth. Additionally, the resultant engineered phage-resistant strains maintain the capabilities of producing example recombinant proteins, D-amino acid oxidase and coronavirus-encoded nonstructural protein nsp8, even under high levels of phage cocktail challenge. The strategy reported here will be useful for developing engineered E. coli strains with improved phage resistance for various industrial fermentation processes for producing recombinant proteins and chemicals of interest.
Engineering micro oxygen factories to slow tumour progression via hyperoxic microenvironments
Authors: Wang Weili , Zheng Huizhen , Jiang Jun , Li Zhi , Jiang Dongpeng , Shi Xiangru , Wang Hui , Jiang Jie , Xie Qianqian , Gao Meng , Chu Jianhong , Cai Xiaoming , Xia Tian , Li Ruibin 
Published: August 2022

AbstractWhile hypoxia promotes carcinogenesis, tumour aggressiveness, metastasis, and resistance to oncological treatments, the impacts of hyperoxia on tumours are rarely explored because providing a long-lasting oxygen supply in vivo is a major challenge. Herein, we construct micro oxygen factories, namely, photosynthesis microcapsules (PMCs), by encapsulation of acquired cyanobacteria and upconversion nanoparticles in alginate microcapsules. This system enables a long-lasting oxygen supply through the conversion of external radiation into red-wavelength emissions for photosynthesis in cyanobacteria. PMC treatment suppresses the NF-kB pathway, HIF-1α production and cancer cell proliferation. Hyperoxic microenvironment created by an in vivo PMC implant inhibits hepatocarcinoma growth and metastasis and has synergistic effects together with anti-PD-1 in breast cancer. The engineering oxygen factories offer potential for tumour biology studies in hyperoxic microenvironments and inspire the exploration of oncological treatments.
Genomic architecture of adaptive radiation and hybridization in Alpine whitefish
Authors: De-Kayne Rishi , Selz Oliver M. , Marques David A. , Frei David , Seehausen Ole , Feulner Philine G. D. 
Published: August 2022

AbstractAdaptive radiations represent some of the most remarkable explosions of diversification across the tree of life. However, the constraints to rapid diversification and how they are sometimes overcome, particularly the relative roles of genetic architecture and hybridization, remain unclear. Here, we address these questions in the Alpine whitefish radiation, using a whole-genome dataset that includes multiple individuals of each of the 22 species belonging to six ecologically distinct ecomorph classes across several lake-systems. We reveal that repeated ecological and morphological diversification along a common environmental axis is associated with both genome-wide allele frequency shifts and a specific, larger effect, locus, associated with the geneedar. Additionally, we highlight the possible role of introgression between species from different lake-systems in facilitating the evolution and persistence of species with unique trait combinations and ecology. These results highlight the importance of both genome architecture and secondary contact with hybridization in fuelling adaptive radiation.
Highly efficient and selective extraction of gold by reduced graphene oxide
Authors: Li Fei , Zhu Jiuyi , Sun Pengzhan , Zhang Mingrui , Li Zhenqing , Xu Dingxin , Gong Xinyu , Zou Xiaolong , Geim A. K. , Su Yang , Cheng Hui-Ming 
Published: August 2022

AbstractMaterials capable of extracting gold from complex sources, especially electronic waste (e-waste), are needed for gold resource sustainability and effective e-waste recycling. However, it remains challenging to achieve high extraction capacity and precise selectivity if only a trace amount of gold is present along with other metallic elements . Here we report an approach based on reduced graphene oxide (rGO) which provides an ultrahigh capacity and selective extraction of gold ions present in ppm concentrations (>1000 mg of gold per gram of rGO at 1 ppm). The excellent gold extraction performance is accounted to the graphene areas and oxidized regions of rGO. The graphene areas spontaneously reduce gold ions to metallic gold, and the oxidized regions allow good dispersibility of the rGO material so that efficient adsorption and reduction of gold ions at the graphene areas can be realized. By controlling the protonation of the oxidized regions of rGO, gold can be extracted exclusively, without contamination by the other 14 co-existing elements typically present in e-waste. These findings are further exploited to demonstrate recycling gold from real-world e-waste with good scalability and economic viability, as exemplified by using rGO membranes in a continuous flow-through process.
Golgi stress induces SIRT2 to counteract Shigella infection via defatty-acylation
Authors: Wang Miao , Zhang Yugang , Komaniecki Garrison P. , Lu Xuan , Cao Ji , Zhang Mingming , Yu Tao , Hou Dan , Spiegelman Nicole A. , Yang Ming , Price Ian R. , Lin Hening 
Published: August 2022

AbstractEnzymes from pathogens often modulate host protein post-translational modifications (PTMs), facilitating survival and proliferation of pathogens. Shigella virulence factors IpaJ and IcsB induce proteolytic cleavage and lysine fatty acylation on host proteins, which cause Golgi stress and suppress innate immunity, respectively. However, it is unknown whether host enzymes could reverse such modifications introduced by pathogens’ virulence factors to suppress pathogenesis. Herein, we report that SIRT2, a potent lysine defatty-acylase, is upregulated by the transcription factor CREB3 under Golgi stress induced by Shigella infection. SIRT2 in turn removes the lysine fatty acylation introduced by Shigella virulence factor IcsB to enhance host innate immunity. SIRT2 knockout mice are more susceptible to Shigella infection than wildtype mice, demonstrating the importance of SIRT2 to counteract Shigella infection.
Associations between aerobic fitness, negative symptoms, cognitive deficits and brain structure in schizophrenia—a cross-sectional study
Authors: Maurus Isabel , Röll Lukas , Keeser Daniel , Karali Temmuz , Papazov Boris , Hasan Alkomiet , Schmitt Andrea , Papazova Irina , Lembeck Moritz , Hirjak Dusan , Thieme Cristina E. , Sykorova Eliska , Münz Susanne , Seitz Valentina , Greska David , Campana Mattia , Wagner Elias , Löhrs Lisa , Pömsl Johannes , Roeh Astrid , Malchow Berend , Keller-Varady Katriona , Ertl-Wagner Birgit , Stöcklein Sophia , Meyer-Lindenberg Andreas , Falkai Peter 
Published: August 2022

AbstractNegative symptoms and cognitive deficits are common in individuals with schizophrenia, greatly affect their outcome, and have been associated with alterations in cerebral gray and white matter volume (GMV, WMV). In the last decade, aerobic endurance training has emerged as a promising intervention to alleviate these symptoms and improved aerobic fitness has been suggested as a key moderator variable. In the present study, we investigated, whether aerobic fitness is associated with fewer cognitive deficits and negative symptoms and with GMVs and WMVs in individuals with schizophrenia in a cross-sectional design. In the largest study to date on the implications of fitness in individuals with schizophrenia, 111 participants at two centers underwent assessments of negative symptoms, cognitive functioning, and aerobic fitness and 69 underwent additional structural magnetic resonance imaging. Multilevel Bayesian partial correlations were computed to quantify relationships between the variables of interest. The main finding was a positive association of aerobic fitness with right hippocampal GMV and WMVs in parahippocampal and several cerebellar regions. We found limited evidence for an association of aerobic fitness with cognitive functioning and negative symptoms. In summary, our results strengthen the notion that aerobic fitness and hippocampal plasticity are interrelated which holds implications for the design of exercise interventions in individuals with schizophrenia.
Daily 1 km terrain resolving maps of surface fine particulate matter for the western United States 2003–2021
Authors: Swanson Alan , Holden Zachary A. , Graham Jon , Warren D. Allen , Noonan Curtis , Landguth Erin 
Published: August 2022

AbstractWe developed daily maps of surface fine particulate matter (PM2.5) for the western United States. We used geographically weighted regression fit to air quality station observations with Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) data, and meteorological data to produce daily 1-kilometer resolution PM2.5 concentration estimates from 2003–2020. To account for impacts of stagnant air and inversions, we included estimates of inversion strength based on meteorological conditions, and inversion potential based on human activities and local topography. Model accuracy based on cross-validation was R2 = 0.66. AOD data improve the model in summer and fall during periods of high wildfire activity while the stagnation terms capture the spatial and temporal dynamics of PM2.5 in mountain valleys, particularly during winter. These data can be used to explore exposure and health outcome impacts of PM2.5 across spatiotemporal domains particularly in the intermountain western United States where measurements from monitoring station data are sparse. Furthermore, these data may facilitate analyses of inversion impacts and local topography on exposure and health outcome studies.
Evaluation of entropy driven jet symmetry transitions
Authors: Pease Leonard F. , Mahoney Lenna A. , Yokuda S. Thomas , Bamberger Judith A. , Minette Michael J. 
Published: August 2022

AbstractHere we determine whether entropy drives planar turbulent jets into round turbulent jets. Determining when a jet flow transitions from one symmetry to the next is an important but incompletely resolved problem. The constructal view argues that the transition between symmetries of jet flows is governed by the minimization or maximization of entropy. Here we explore whether entropy increases with the transition of a planar turbulent jet into a round turbulent jet and whether entropy maximization (or minimization) predicts the same location of symmetry transition as velocity matching. We find that entropy considerations presented do not predict this transition.
Rhythm but not melody processing helps reading via phonological awareness and phonological memory
Authors: Sousa José , Martins Marta , Torres Nathércia , Castro São Luís , Silva Susana 
Published: August 2022

AbstractDespite abundant evidence that music skills relate to enhanced reading performance, the mechanisms subtending this relation are still under discussion. The Temporal Sampling Framework (TSF) provides a well-defined explanation for the music-reading link: musical rhythm perception would relate to reading because it helps to encode speech units, which, in turn, is fundamental to reading. However, in spite of this clear mediation-based prediction (effect of music skills mediated by the encoding of speech units), the tests made to it so far remain inconclusive, either due to the use of hybrid measures (rhythm perception and production, musical and non-musical rhythm) or to underspecified mediation results (unclear presence of partial mediation). In the present study, we addressed these potential weaknesses of previous studies and investigated whether phonological memory and phonological awareness (proxies of speech encoding abilities) mediate the effects of rhythm perception abilities on reading in late first-graders. To test for the specificity of musical rhythm in this relation, we examined the same hypothesis for melody perception. Results showed full mediation for effects of musical rhythm perception, while melody perception did not even relate to reading. Our findings support the predictions embedded in the TSF and highlight the potential of rhythm-based interventions in early stimulation.
An analysis of the significance of the Tre2/Bub2/CDC 16 (TBC) domain protein family 8 in colorectal cancer
Authors: Liu Yuan-jie , Li Jie-pin , Li Hui-ru , Zeng Shu-hong , Chen Yu-gen , Han Mei , Ye Qian-wen , Zhou Jin-yong , Liu Shen-lin , Zou Xi 
Published: August 2022

AbstractThe TBC (Tre-2/Bub2/Cdc16, TBC) structural domain is now considered as one of the factors potentially regulating tumor progression. However, to date, studies on the relationship between TBC structural domains and tumors are limited. In this study, we identified the role of TBC1 domain family member 8 (TBC1D8) as an oncogene in colorectal cancer (CRC) by least absolute shrinkage and selection operator (LASSO) and Cox regression analysis, showing thatTBC1D8may independently predict CRC outcome. Functional enrichment and single-cell analysis showed thatTBC1D8levels were associated with hypoxia.TBC1D8levels were also positively correlated with M2 macrophage infiltration, which may have a complex association with hypoxia. Taken together, these results show that theTBC1D8gene is involved in colorectal carcinogenesis, and the underlying molecular mechanisms may include hypoxia and immune cell infiltration.
Isolation and identification of antioxidative peptides from crocodile meat hydrolysates using silica gel chromatography
Authors: Yang Liu , Xing Yan , Chen Rui , Ni He , Li Hai-Hang 
Published: August 2022

AbstractCrocodiles are cultured in large numbers in Asia and other places in order to protect wild resources and meet the needs of human life. In this study, crocodile (Crocodylus siamensis) meat proteins were extracted and hydrolyzed into peptides, their antioxidant peptides were isolated and purified by silica gel chromatography and identified by LC/MS. Crocodile meat proteins were optimally extracted with water and hydrolyzed by papain based on the degree of hydrolysis and antioxidant activity. The hydrolysates were fractionated by ultrafiltration into 3 kDa, 3–30 kDa, and ≥ 30 kDa fractions. The 3 kDa fraction showed most antioxidant activity of the hydrolysates. Its active peptides were separated by silica gel column chromatography and purified by silica gel TLC, based on TLC bio-autographic assays of the activity. Four highly active peptides were identified by LC/MS as SSLTIQFVEGQFVDSYDPTIENTFTK, VPPHIY, VAPEEHPVLLTEAPLNPK, and RNGLPGPIGPAG. The identified peptides were synthesized and showed 50% free radical scavenging activities at 1.0 mg/mL, equal or higher to ascorbic acid at 0.5 mg/mL, in both DPPH and ABTS assays. The results indicated that the 3 kDa hydrolyzed peptides of crocodile meat had high antioxidant activity and the active peptides can be effectively separated and purified by silica gel column chromatography and TLC.