bluuebunny/crossref_metadata_2025_split huggingface dataset:
Orthopedic Injuries and Their Treatment in Children During Earthquakes: A Systematic Review
Authors: Morelli Ilaria , Sabbadini Maria Grazia , Bortolin Michelangelo 
Published: August 2015

AbstractOrthopedic injuries commonly affect children during earthquakes, but reports about them are rare. This setting may lead to different standards of care, but guidelines are still missing in this field. A systematic review was performed to: (1) assess type and body distribution of pediatric earthquake-related injuries, treatment performed, length of stay, and complications; and (2) identify starting points to define standards of care.PubMed database was researched for papers (1999-2014 period) in agreement with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) Statement. Inclusion criteria were: English, French, Spanish, or Italian language and data reported about orthopedic lesions in children (≤18 years old). Reviews, letters, commentaries, editorials, and single case reports were excluded. Two independent reviewers selected articles after abstract and full-text reading.Traumatic injuries caused child hospital admissions ranging from 46.9% to 100.0%; 16% to 53% suffered fractures. Lower limbs mostly were involved. Soft-tissue injuries affected 55% of patients. Debridement and external fixation (EF) were the most frequent surgical treatments. Amputation rates varied from 5% to 11%.This study revealed that field hospitals should be prepared to: (1) treat mainly lower extremities fractures in children; and (2) use especially EF techniques. The presence of orthopedic surgeons familiar with pediatric traumatology should be considered.MorelliI, SabbadiniMG, BortolinM. Orthopedic injuries and their treatment in children during earthquakes: a systematic review. Prehosp Disaster Med. 2015;30(5):478–485.
Performance Measures in the Management of Chronic Obstructive Pulmonary Disease in Primary Care – A Retrospective Analysis
Authors: Kaufmann Carla , Markun Stefan , Hasler Susann , Dalla Lana Kaba , Rosemann Thomas , Senn Oliver , Steurer-Stey Claudia 
Published: August 2015

Leistungsmessgrössen in der Grundversorgung von Patienten mit COPD – eine Analyse Zusammenfassung. Hintergrund: Das Befolgen der Empfehlungen für ein gutes Management der chronisch-obstruktiven Lungenkrankheit (COPD) verbessert wichtige Endpunkte. Leistungsmessgrössen (LM) reflektieren die Qualität der Betreuung, dennoch existieren über die Dokumentation dieser Messgrössen bei COPD für die Grundversorgung kaum Daten. Ziel: Überprüfen der Dokumentation von COPD spezifischen Messgrössen in Grundversorgerpraxen des Kanton Zürich. Methode: Retrospektive Auswertung der Krankengeschichten von Patienten mit ärztlich diagnostizierter COPD, über einen Zeitraum von zwölf Monaten. Die Dokumentation der LM wurde durch Berechnen des Prozentsatzes der dokumentierten Parameter bewertet. Zusätzlich erfolgte ein Vergleich der LM Dokumentation mit einer Praxis, die ein strukturiertes COPD-Programm implementiert hatte. Resultate: Es wurden Daten von 115 Patienten aus 14 Praxen, davon 57% männlich, mit einem Durchschnittsalter von 68 (44–93) Jahren, analysiert. 46% waren aktive Raucher mit 56 (22–150 py) Packyears. Komorbiditäten waren in 73% der Fälle dokumentiert, der Schweregrad mit GOLD-Klassifizierung in 70% (GOLD I 11%, GOLD II 64%, GOLD III 21%, GOLD IV 4%).Gemäss Dokumentation hatten die Patienten durchschnittlich 1,4 Exazerbationen pro Jahr. Die Dokumentation der LM lag zwischen 16% (schriftlicher Aktionsplan im Falle von Exazerbationen) und 95% (Raucherstatus). Eine Dokumentation für eine Rauchstopp-Empfehlung fand sich in 74% der Fälle, für die Grippeimpfung in 49%. Eine adäquate medikamentöse Therapie und Instruktion der Inhalation war für 65 bzw. 57%, für pulmonale Rehabilitation in 27% der Patienten dokumentiert. Angaben zu einer kollaborativen und proaktiven Betreuung fanden sich bei 60 resp. 51%. Die Praxis mit dem laufenden COPD-Programm zeigte eine signifikant bessere Dokumentation (p<0,01) für alle LM ausser für die Grippeimpfung. Schlussfolgerung: In der Schweizer Grundversorgung bestehen Lücken in der Dokumentation hinsichtlich der Empfehlungen für eine nutzbringende COPD-Versorgung. Die Identifikation und Überbrückung dieser Lücken ist zentral für mehr Qualität in der Gesundheitsversorgung.
Quantitative fragment analysis of FLT3-ITD efficiently identifying poor prognostic group with high mutant allele burden or long ITD length
Authors: Kim Y , Lee G D , Park J , Yoon J-H , Kim H-J , Min W-S , Kim M 
Published: August 2015

AbstractMutation of the fms-like tyrosine kinase 3-internal tandem duplication (FLT3-ITD), which is one of the most frequent genetic alterations, strongly contributes to an increased risk of treatment failure and to poor prognosis. In this study, we established quantitative fragment analysis of FLT3-ITD simultaneously measuring mutant allele burden and length, verified the analytical performance and evaluated the clinical significance in adult acute myeloid leukemia (AML) patients. FLT3-ITD was detected in 73 of 363 adult AML patients (20.1%) and high mutant allelic burden (⩾50%, n=13) and long ITD length (⩾70 base pairs, n=15) were significantly associated with inferior overall survival (OS; P=0.002 and 0.005, respectively) and event-free survival (EFS; P=0.004 and 0.007, respectively). FLT3-ITD poor prognostic group was identified as patients with high allele burden or long ITD length (n=24), which revealed significant adverse clinical outcome for both OS (P<0.001) and EFS (P<0.001). In cytogenetically normal AML, even FLT3-ITD low allele burden and short length was associated with poorer OS (P=0.037) and EFS (P=0.044) than wild type, whose influence was overcome when hematopoietic stem cell transplantation was performed. In minimal residual disease monitoring, FLT3-ITD negativity after consolidation therapy was a valuable predictor of better OS (P<0.001) and EFS (P<0.001). FLT3-ITD poor prognostic group with high mutant allele burden or long ITD length is efficiently identified by quantitative fragment analysis.
Rationale for revision and proposed changes of the WHO diagnostic criteria for polycythemia vera, essential thrombocythemia and primary myelofibrosis
Authors: Barbui T , Thiele J , Vannucchi A M , Tefferi A 
Published: August 2015

AbstractThe 2001/2008 World Health Organization (WHO)-based diagnostic criteria for polycythemia vera (PV), essential thrombocythemia (ET) and primary myelofibrosis (PMF) were recently revised to accomodate new information on disease-specific mutations and underscore distinguishing morphologic features. In this context, it seems to be reasonable to compare first major diagnostic criteria of the former WHO classifications for myeloproliferative neoplasm (MPN) and then to focus on details that have been discussed and will be proposed for the upcoming revision of diagnostic guidelines. In PV, a characteristic bone marrow (BM) morphology was added as one of three major diagnostic criteria, which allowed lowering of the hemoglobin/hematocrit threshold for diagnosis, which is another major criterion, to 16.5 g/dl/49% in men and 16 g/dl/48% in women. The presence of aJAK2mutation remains the third major diagnostic criterion in PV. Subnormal serum erythropoietin level is now the only minor criterion in PV and is used to captureJAK2-unmutated cases. In ET and PMF, mutations that are considered to confirm clonality and specific diagnosis now includeCALR, in addition toJAK2andMPL. Also in the 2015 discussed revision, overtly fibrotic PMF is clearly distinguished from early/prefibrotic PMF and each PMF variant now includes a separate list of diagnostic criteria. The main rationale for these changes was to enhance the distinction between so-called masked PV andJAK2-mutated ET and between ET and prefibrotic early PMF. The proposed changes also underscore the complementary role, as well as limitations of mutation analysis in morphologic diagnosis. On the other hand, discovery of new biological markers may probably be expected in the future to enhance discrimination of the different MPN subtypes in accordance with the histological BM patterns and corresponding clinical features.
Rapid sequestration of rock avalanche deposits within glaciers
Authors: Dunning Stuart A. , Rosser Nicholas J. , McColl Samuel T. , Reznichenko Natalya V. 
Published: August 2015

AbstractTopographic development in mountainous landscapes is a complex interplay between tectonics, climate and denudation. Glaciers erode valleys to generate headwall relief, and hillslope processes control the height and retreat of the peaks. The magnitude–frequency of these landslides and their long-term ability to lower mountains above glaciers is poorly understood; however, small, frequent rockfalls are currently thought to dominate. The preservation of rarer, larger, landslide deposits is exceptionally short-lived, as they are rapidly reworked. The 2013 Mount Haast rock avalanche that failed from the slopes of Aoraki/Mount Cook, New Zealand, onto the glacier accumulation zone below was invisible to conventional remote sensing after just 3 months. Here we use sub-surface data to reveal the now-buried landslide deposit, and suggest that large landslides are the primary hillslope erosion mechanism here. These data show how past large landslides can be identified in accumulation zones, providing an untapped archive of erosive events in mountainous landscapes.
Liquid demixing of intrinsically disordered proteins is seeded by poly(ADP-ribose)
Authors: Altmeyer Matthias , Neelsen Kai J. , Teloni Federico , Pozdnyakova Irina , Pellegrino Stefania , Grøfte Merete , Rask Maj-Britt Druedahl , Streicher Werner , Jungmichel Stephanie , Nielsen Michael Lund , Lukas Jiri 
Published: August 2015

AbstractIntrinsically disordered proteins can phase separate from the soluble intracellular space, and tend to aggregate under pathological conditions. The physiological functions and molecular triggers of liquid demixing by phase separation are not well understood. Here we show in vitro and in vivo that the nucleic acid-mimicking biopolymer poly(ADP-ribose) (PAR) nucleates intracellular liquid demixing. PAR levels are markedly induced at sites of DNA damage, and we provide evidence that PAR-seeded liquid demixing results in rapid, yet transient and fully reversible assembly of various intrinsically disordered proteins at DNA break sites. Demixing, which relies on electrostatic interactions between positively charged RGG repeats and negatively charged PAR, is amplified by aggregation-prone prion-like domains, and orchestrates the earliest cellular responses to DNA breakage. We propose that PAR-seeded liquid demixing is a general mechanism to dynamically reorganize the soluble nuclear space with implications for pathological protein aggregation caused by derailed phase separation.
Ten-year helium anomaly prior to the 2014 Mt Ontake eruption
Authors: Sano Yuji , Kagoshima Takanori , Takahata Naoto , Nishio Yoshiro , Roulleau Emilie , Pinti Daniele L. , Fischer Tobias P. 
Published: August 2015

AbstractMt Ontake in central Japan suddenly erupted on 27th September 2014, killing 57 people with 6 still missing. It was a hydro-volcanic eruption and new magmatic material was not detected. There were no precursor signals such as seismicity and edifice inflation. It is difficult to predict hydro-volcanic eruptions because they are local phenomena that only affect a limited area surrounding the explosive vent. Here we report a long-term helium anomaly measured in hot springs close to the central cone. Helium-3 is the most sensitive tracer of magmatic volatiles. We have conducted spatial surveys around the volcano at once per few years since November 1981. The 3He/4He ratios of the closest site to the cone stayed constant until June 2000 and increased significantly from June 2003 to November 2014, while those of distant sites showed no valuable change. These observations suggest a recent re-activation of Mt Ontake and that helium-3 enhancement may have been a precursor of the 2014 eruption. We show that the eruption was ultimately caused by the increased input of magmatic volatiles over a ten-year period which resulted in the slow pressurization of the volcanic conduit leading to the hydro-volcanic event in September 2014.
Synthesis and antitumor activity of novel N-substituted carbazole imidazolium salt derivatives
Authors: Liu Lan-Xiang , Wang Xue-Quan , Zhou Bei , Yang Li-Juan , Li Yan , Zhang Hong-Bin , Yang Xiao-Dong 
Published: August 2015

AbstractA series of novel N-substituted carbazole imidazolium salt derivatives has been prepared and investigated for their cytotoxic activity against five human tumor cell lines by MTS assay. The results indicated that the existence of 5,6-dimethyl-benzimidazole ring, substitution of the imidazolyl-3-position with a 2-bromobenzyl or naphthylacyl group, as well as alkyl chain length between carbazole and imidazole ring were important for the antitumor activity. Compound 61, bearing a 2-bromobenzyl substituent at position-3 of the 5,6-dimethyl-benzimidazole, showed powerful inhibitory activities and was more selective to HL-60, SMMC-7721, MCF-7 and SW480 cell lines with IC50 values 0.51–2.48 μM. Mechanism of action studies revealed that this new compound could remarkably induce cell cycle arrest and apoptosis in SMMC-7721 cells. This work provides alternative novel way for future drug development based on carbazole and imidazolium salt scaffolds.
Age-related profiling of DNA methylation in CD8+ T cells reveals changes in immune response and transcriptional regulator genes
Authors: Tserel Liina , Kolde Raivo , Limbach Maia , Tretyakov Konstantin , Kasela Silva , Kisand Kai , Saare Mario , Vilo Jaak , Metspalu Andres , Milani Lili , Peterson Pärt 
Published: August 2015

AbstractHuman ageing affects the immune system resulting in an overall decline in immunocompetence. Although all immune cells are affected during aging, the functional capacity of T cells is most influenced and is linked to decreased responsiveness to infections and impaired differentiation. We studied age-related changes in DNA methylation and gene expression in CD4+ and CD8+ T cells from younger and older individuals. We observed marked difference between T cell subsets, with increased number of methylation changes and higher methylome variation in CD8+ T cells with age. The majority of age-related hypermethylated sites were located at CpG islands of silent genes and enriched for repressive histone marks. Specifically, in CD8+ T cell subset we identified strong inverse correlation between methylation and expression levels in genes associated with T cell mediated immune response (LGALS1, IFNG, CCL5, GZMH, CCR7, CD27 and CD248) and differentiation (SATB1, TCF7, BCL11B and RUNX3). Our results thus suggest the link between age-related epigenetic changes and impaired T cell function.
Probing the impact of temperature on molecular events in a developmental system
Authors: Cheung David , Ma Jun 
Published: August 2015

AbstractA well-appreciated general feature of development is the ability to achieve a normal outcome despite the inevitable variability at molecular, genetic, or environmental levels. But it is not well understood how changes in a global factor such as temperature bring about specific challenges to a developmental system in molecular terms. Here we address this question using early Drosophila embryos where the maternal gradient Bicoid (Bcd) instructs anterior-patterning (AP) patterning. We show that temperature can impact the amplitude of the Bcd gradient in the embryo. To evaluate how molecular decisions are made at different temperatures, we quantify Bcd concentrations and the expression of its target gene hunchback (hb) in individual embryos. Our results suggest a relatively robust Bcd concentration threshold in inducing hb transcription within a temperature range. Our results also reveal a complex nature of the effects of temperature on the progressions of developmental and molecular events of the embryo. Our study thus advances the concept of developmental robustness by quantitatively elaborating specific features and challenges—imposed by changes in temperature—that an embryo must resolve.
Alpha-ring Independent Assembly of the 20S Proteasome
Authors: Panfair Dilrajkaur , Ramamurthy Aishwarya , Kusmierczyk Andrew R. 
Published: August 2015

AbstractArchaeal proteasomes share many features with their eukaryotic counterparts and serve as important models for assembly. Proteasomes are also found in certain bacterial lineages yet their assembly mechanism is thought to be fundamentally different. Here we investigate α-ring formation using recombinant proteasomes from the archaeon Methanococcus maripaludis. Through an engineered disulfide cross-linking strategy, we demonstrate that double α-rings are structurally analogous to half-proteasomes and can form independently of single α-rings. More importantly, via targeted mutagenesis, we show that single α-rings are not required for the efficient assembly of 20S proteasomes. Our data support updating the currently held “α-ring first” view of assembly, initially proposed in studies of archaeal proteasomes and present a way to reconcile the seemingly separate bacterial assembly mechanism with the rest of the proteasome realm. We suggest that a common assembly network underpins the absolutely conserved architecture of proteasomes across all domains of life.
Prognostic value of CD44 expression in renal cell carcinoma: a systematic review and meta-analysis
Authors: Li Xintao , Ma Xin , Chen Luyao , Gu Liangyou , Zhang Yu , Zhang Fan , Ouyang Yun , Gao Yu , Huang Qingbo , Zhang Xu 
Published: August 2015

AbstractCD44 is a marker of cancer stem-like cells in renal cell carcinoma (RCC). However, the prognostic value of CD44 in RCC remains controversial. This study evaluated the correlation of CD44 expression with the clinicopathological features of RCC through a meta-analysis. We systematically searched PubMed, ISI Web of Science and Embase for relevant studies until February 2015. We collected and analysed data on clinical stage, Fuhrman grade, microvascular invasion, recurrence, five-year overall survival (OS), disease-specific survival (DSS) and disease-free survival (DFS). Twenty studies involving 1672 patients satisfied the inclusion criteria. Results showed that high CD44 expression in RCC was a poor prognostic marker for five-year OS (RR = 0.69, 95% CI 0.60–0.78) in a fixed-effects model and for five-year DSS (RR = 0.46, 95% CI 0.27–0.80) and five-year DFS (RR = 0.63, 95% CI 0.43–0.93) in a random-effects model. CD44 expression also correlated with Furhman grade (RR = 0.61, 95% CI 0.48–0.77), tumour recurrence (RR = 7.42, 95% CI 3.74–14.70) and MVI (Microvascular invasion) (RR = 3.63, 95% CI 1.97–6.71). This meta-analysis suggests that CD44 is a prognostic marker in RCC. High CD44 expression correlates with high Fuhrman grade, recurrence, MVI and poor prognosis.
Less is more: Avoiding the LIBS dimensionality curse through judicious feature selection for explosive detection
Authors: Kumar Myakalwar Ashwin , Spegazzini Nicolas , Zhang Chi , Kumar Anubham Siva , Dasari Ramachandra R. , Barman Ishan , Kumar Gundawar Manoj 
Published: August 2015

AbstractDespite its intrinsic advantages, translation of laser induced breakdown spectroscopy for material identification has been often impeded by the lack of robustness of developed classification models, often due to the presence of spurious correlations. While a number of classifiers exhibiting high discriminatory power have been reported, efforts in establishing the subset of relevant spectral features that enable a fundamental interpretation of the segmentation capability and avoid the ‘curse of dimensionality’ have been lacking. Using LIBS data acquired from a set of secondary explosives, we investigate judicious feature selection approaches and architect two different chemometrics classifiers –based on feature selection through prerequisite knowledge of the sample composition and genetic algorithm, respectively. While the full spectral input results in classification rate of ca.92%, selection of only carbon to hydrogen spectral window results in near identical performance. Importantly, the genetic algorithm-derived classifier shows a statistically significant improvement to ca. 94% accuracy for prospective classification, even though the number of features used is an order of magnitude smaller. Our findings demonstrate the impact of rigorous feature selection in LIBS and also hint at the feasibility of using a discrete filter based detector thereby enabling a cheaper and compact system more amenable to field operations.
A Nucleus-Imaging Probe That Selectively Stabilizes a Minor Conformation of c-MYC G-quadruplex and Down-regulates c-MYC Transcription in Human Cancer Cells
Authors: Panda Deepanjan , Debnath Manish , Mandal Samir , Bessi Irene , Schwalbe Harald , Dash Jyotirmayee 
Published: August 2015

AbstractThe c-MYC proto-oncogene is a regulator of fundamental cellular processes such as cell cycle progression and apoptosis. The development of novel c-MYC inhibitors that can act by targeting the c-MYC DNA G-quadruplex at the level of transcription would provide potential insight into structure-based design of small molecules and lead to a promising arena for cancer therapy. Herein we report our finding that two simple bis-triazolylcarbazole derivatives can inhibit c-MYC transcription, possibly by stabilizing the c-MYC G-quadruplex. These compounds are prepared using a facile and modular approach based on Cu(I) catalysed azide and alkyne cycloaddition. A carbazole ligand with carboxamide side chains is found to be microenvironment-sensitive and highly selective for “turn-on” detection of c-MYC quadruplex over duplex DNA. This fluorescent probe is applicable to visualize the cellular nucleus in living cells. Interestingly, the ligand binds to c-MYC in an asymmetric fashion and selects the minor-populated conformer via conformational selection.
Comparison of individual component deletions in a glucose-specific phosphotransferase system revealed their different applications
Authors: Liang Quanfeng , Zhang Fengyu , Li Yikui , Zhang Xu , Li Jiaojiao , Yang Peng , Qi Qingsheng 
Published: August 2015

AbstractThe phosphoenolpyruvate-dependent glucose-specific phosphotransferase system (PTSGlc) is the main glucose uptake pathway in Escherichia coli that affects both substrate assimilation and metabolism leading to the product formation. In this study, the effect of single PTSGlc mutation on cell growth and substrate consumption was investigated by knocking out the genes involved in the phosphotransfer cascade of the PTSGlc. In addition, the distribution of the metabolites of mutants was analyzed. Each mutant was confirmed to have different adaptability in the presence of both glucose and xylose with different ratios and a substrate mixture with high xylose content can be completely consumed in short time when the ptsI mutant is employed. Finally, ptsH deletion was for the first time applied for succinate production due to its well performance under anaerobic condition. Strain YL104H, in which ptsH was deleted, exhibited considerably increased succinate yield under both aerobic and anaerobic conditions. The succinate titer and overall productivity reached 511.11 mM and 1.01 g/L/h after 60 h during the whole-phase fermentation in a mineral salt medium. The present results demonstrated the glucose and xylose co-utilization efficiency and the product yield and productivity can be significantly improved if a suitable PTSGlc deletion mutant was selected.