bluuebunny/crossref_metadata_2025_split huggingface dataset:
Permissive untreated pseudoaneurysm concept in damage control interventional radiology for traumatic pancreaticoduodenal artery injury
Authors: Yonemitsu Takafumi , Shibata Naoaki , Shima Nozomu , Fuchigami Junya , Miyake Yuichi , Ikoma Akira , Minamiguchi Hiroki , Sonomura Tetsuo , Kato Seiya 
Published: February 2023

BackgroundAngioembolization for traumatic pancreaticoduodenal artery injury with unstable circulation, which characteristically requires a prolonged procedure time, does not yet have a standardized strategy for damage control interventional radiology.Case PresentationWe encountered two cases of rare traumatic pancreaticoduodenal artery injury wherein the patients were saved by a multidisciplinary team with a shared goal of clinical success, rather than the procedural success of angioembolization. Both patients treated with angioembolization had residual pseudoaneurysm or faint extravasation in the pancreaticoduodenal artery arcade. We prioritized critical care with preemptive plasma transfusion and aggressive blood pressure control, and planned repeat angiography. The patients showed no clinical signs of rebleeding or pseudoaneurysm based on computed tomography during follow‐up.ConclusionOur findings suggest that the permissive untreated pseudoaneurysm concept can be useful in developing damage control interventional radiology strategies for trauma cases with challenging time limitations, such as traumatic pancreaticoduodenal artery injury with circulatory collapse.
Chemoenzymatic Late‐Stage Modifications Enable Downstream Click‐Mediated Fluorescent Tagging of Peptides
Authors: Colombano Alessandro , Dalponte Luca , Dall'Angelo Sergio , Clemente Claudia , Idress Mohannad , Ghazal Ahmad , Houssen Wael E. 
Published: February 2023

AbstractAromatic prenyltransferases from cyanobactin biosynthetic pathways catalyse the chemoselective and regioselective intramolecular transfer of prenyl/geranyl groups from isoprene donors to an electron‐rich position in these macrocyclic and linear peptides. These enzymes often demonstrate relaxed substrate specificity and are considered useful biocatalysts for structural diversification of peptides. Herein, we assess the isoprene donor specificity of the N1‐tryptophan prenyltransferase AcyF from the anacyclamide A8P pathway using a library of 22 synthetic alkyl pyrophosphate analogues, of which many display reactive groups that are amenable to additional functionalization. We further used AcyF to introduce a reactive moiety into a tryptophan‐containing cyclic peptide and subsequently used click chemistry to fluorescently label the enzymatically modified peptide. This chemoenzymatic strategy allows late‐stage modification of peptides and is useful for many applications.
Reductive Asymmetric Aza‐Mislow‐Evans Rearrangement by 1,3,2‐Diazaphospholene Catalysis**
Authors: Zhang Guoting , Cramer Nicolai 
Published: February 2023

Abstract1,3,2‐diazaphospholene hydrides (DAP−H) enable smooth conjugate reduction of polarized double bonds. The transiently formed phosphorus‐enolate provides a potential platform for reductive α‐functionalizations. In this respect, asymmetric C‐heteroatom bond forming processes are synthetically appealing but remain elusive. We report a 1,3,2‐diazaphospholene‐catalyzed three‐step cascade reaction of N‐sulfinyl acrylamides comprised of conjugate reduction, [2,3]‐sigmatropic aza‐Mislow‐Evans rearrangement and subsequent S−O bond cleavage. The obtained enantio‐enriched α‐hydroxy amides are formed in good yields and excellent enantiospecificity. The stereo‐defined P‐bound N,O‐ketene aminal ensures an excellent transfer of chirality from the sulfur stereocenter to α‐carbon. The transformation operates under mild conditions at ambient temperature. Moreover, DAP−H is a competent reductant for the cleavage of formed sulfenate ester, eliminating the extra step in traditional Mislow‐Evans processes.
Chemoselective 1,2‐Reduction and Regiodivergent Deuteration of Chromium‐Bound Arenes
Authors: Qiu Jia‐Yi , Zeng Wei‐Long , Xie Hui , Wang Ming‐Yang , Li Wei 
Published: February 2023

AbstractHerein, a general strategy for chemo‐ and regioselective 1,2‐reduction of chromium‐bound arenes was developed, thus providing rapid access to 1,3‐cyclohexadienes. Selective arene activation via π‐complexation along with the use of mild hydride Ph3SiH can overcome the inherently low reactivity of arene π‐bonds while tolerating various reduction‐sensitive functional groups. Its versatility further enables a regiodivergent deuteration. Using different sequences of (non)deuterated hydride and acid reagents, the deuterated positions as well as the degrees of deuterium incorporation can be controlled precisely, which leads to a large and previously inaccessible chemical space for 1,3‐cyclohexadiene isotopologues. A reasonable mechanism was proposed based on intermediate capture and control experiments. The synthetic value of this selective 1,2‐reduction was demonstrated in the formal total synthesis of (±)‐galanthamine and (±)‐lycoramine.
The effects of surface modified date‐palm fiber fillers upon the thermo‐physical performances of high density polyethylene‐polyvinyl chloride blend with maleic anhydride as a grafting agent
Authors: Maou Samira , Meftah Yazid , Grohens Yves , Kervoelen Antoine , Magueresse Anthony 
Published: February 2023

AbstractTo demonstrate the upcycling of thermoplastic waste with good thermo‐physical properties, high density polyethylene (HDPE; 80 phr) and polyvinyl chloride (PVC; 20 phr) are mixed as the matrix using maleic anhydride (MAH) reinforced with unmodified and modified date palm fibers (DPFs; 30 phr). The effects of in situ grafting of MAH onto the DPFs‐HDPE‐PVC composites upon the resultant thermo‐physical characteristics are investigated and analyzed via Fourier transform infrared spectroscopy and scanning electron microscopy. Thus, the effective compatibilizing of both the HDPE‐PVC component and the grafted HDPE‐PVC blend with the modified DPFs are confirmed. In addition, the results of dynamical mechanical analysis and differential scanning calorimetry indicate that the glass transition temperature (Tg) of the composite is enhanced by the incorporation of modified DPFs. The thermal, mechanical, and water uptake properties of the composites are also improved. Rheological analysis at low frequency reveals that the introduction of hydrolyzed DPFs results in a higher complex viscosity (1.94 × 106 Pa s) and storage modulus (119,844 MPa) for the obtained composite (designated G‐Hydro). Overall, the G‐Hydro composite exhibits the best performance, making it ideal for a variety of construction and building purposes.
Terminal 3 Flughafen Frankfurt – Neubau der Brücke Vorfahrtstisch T3
Authors: Weißer Ingo , Diefenhardt Christopher , Dederichs Jens , Romanowski Jascha 
Published: February 2023

AbstractDer Flughafen Frankfurt wächst. Im Süden des Frankfurter Airports wird derzeit das neue Terminal 3 mit drei Flugsteigen und zugehöriger Infrastruktur errichtet. Im Zusammenhang mit diesem Großprojekt steht der sog. Vorfahrtstisch vor dem künftigen Terminalhauptgebäude – ein 580 m langes Brückenbauwerk zur Anbindung des Check‐in‐Bereichs. Die Brücke weist hohe architektonische Anforderungen und komplizierte Geometrien auf, die besondere Lösungsansätze in der Planungs‐ und Ausführungsphase erforderten.
Evaluation of preferred binding regions on ubiquitin and IgG1 FC for interacting with multimodal cation exchange resins using DEPC labeling/mass spectrometry
Authors: Dhingra Kabir , Gudhka Ronak B. , Cramer Steven M. 
Published: February 2023

AbstractThere is significant interest in identifying the preferred binding domains of biological products to various chromatographic materials. In this work, we develop a biophysical technique that uses diethyl pyrocarbonate (DEPC) based covalent labeling in concert with enzymatic digestion and mass spectrometry to identify the binding patches for proteins bound to commercially available multimodal (MM) cation exchange chromatography resins. The technique compares the changes in covalent labeling of the protein in solution and in the bound state and uses the differences in this labeling to identify residues that are sterically shielded upon resin binding and, therefore, potentially involved in the resin binding process. Importantly, this approach enables the labeling of many amino acids and can be carried out over a pH range of 5.5–7.5, thus enabling the protein surface mapping at conditions of interest in MM cation exchange systems. The protocol is first developed using the model protein ubiquitin and the results indicate that lysine residues located on the front face of the protein show dramatic changes in DEPC labeling while residues present on other regions have minimal or no reductions. This indicates that the front face of ubiquitin is likely involved in resin binding. In addition, surface property maps indicate that the hypothesized front face binding region consists of overlapping positively charged and hydrophobic patches. The technique is then employed with an IgG1 FC and the results indicate that residues on the CH2–CH3 interface and the hinge are significantly sterically shielded upon binding to the resin. Further, these regions are again associated with significant overlap of positively charged and hydrophobic patches. On the other hand, while, residues on the CH2 and the front face of the IgG1 FC also exhibited some changes in DEPC labeling upon binding, these regions have less distinct charged and hydrophobic patches. Importantly, the hypothesized binding patches identified for both ubiquitin and FC using this approach are shown to be consistent with previously reported NMR studies. In contrast to NMR, this new approach enables the identification of preferred binding regions without the need for isotopically labeled proteins or chemical shift assignments. The technique developed in this work sets the stage for the evaluation of the binding domains of a wide range of biological products to chromatographic surfaces, with important implications for designing biomolecules with improved biomanufacturability properties.
Sustainability trade‐offs in the circular economy: A maturity‐based framework
Authors: Ünal Enes , Sinha Vikash Kumar 
Published: February 2023

AbstractThe theoretical and practical understanding of sustainability implementation has been changing in depth and scope. In particular, circular economy paradigms (e.g., Cradle to Cradle or “C2C” practices) have enabled firms to rethink their resource management behavior, resulting in distinct trade‐off patterns among different sustainability dimensions. Furthermore, while many established firms remain reactive and market‐oriented in their sustainability implementations, sustainability‐rooted firms proactively integrate sustainability practices into their core business. The prior literature on sustainability trade‐offs has unduly focused more on established firms that predominantly indulge in market‐oriented decisions and trade‐offs between profit and sustainability, lacking insights into the approaches adopted by sustainability‐rooted firms and trade‐offs among the different dimensions of sustainability. We performed a mixed‐methods study to address this gap and illustrated the rationale and dynamics of trade‐offs among five sustainability dimensions (i.e., material health, material reutilization, renewable energy, water stewardship, and social fairness). We primarily focused on firms in the United States and the European Union since they are the leading areas in terms of circular economy adoption. We explained the pattern of sustainability trade‐offs and associated them with a three‐stage maturity framework, namely, low‐hanging fruits, exploratory, and resource and time intensive. We contributed to the theory by depicting the influence of resource allocation and sustainability maturity level on trade‐offs among the five dimensions of sustainability. Practitioners can leverage our framework to better understand their sustainability transformation and make more informed decisions for attaining higher levels of sustainability with more impact.
Indirect co‐culture of islet cells in 3D biocompatible collagen/laminin scaffold with angiomiRs transfected mesenchymal stem cells
Authors: Sabet Sarvestani Fatemeh , Tamaddon Ali‐Mohammad , Yaghoobi Ramin , Geramizadeh Bita , Abolmaali Samira Sadat , Kaviani Maryam , Keshtkar Somayeh , Pakbaz Sara , Azarpira Negar 
Published: February 2023

AbstractDiabetes is an autoimmune disease in which the pancreatic islets produce insufficient insulin. One of the treatment strategies is islet isolation, which may damage these cells as they lack vasculature. Biocompatible scaffolds are one of the efficient techniques for dealing with this issue. The current study is aimed to determine the effect of transfected BM‐MSCS with angiomiR‐126 and ‐210 on the survival and functionality of islets loaded into a 3D scaffold via laminin (LMN). AngiomiRs/Poly Ethylenimine polyplexes were transfected into bone marrow‐mesenchymal stem cells (BM‐MSCs), followed by 3‐day indirect co‐culturing with islets laden in collagen (Col)‐based hydrogel scaffolds containing LMN. Islet proliferation and viability were significantly increased in LMN‐containing scaffolds, particularly in the miRNA‐126 treated group. Insulin gene expression was superior in Col scaffolds, especially, in the BM‐MSCs/miRNA‐126 treated group. VEGF was upregulated in the LMN‐containing scaffolds in both miRNA‐treated groups, specifically in the miRNA‐210, leading to VEGF secretion. MiRNAs' target genes showed no downregulation in LMN‐free scaffolds; while a drastic downregulation was seen in the LMN‐containing scaffolds. The highest insulin secretion was recorded in the Oxidized dextran (Odex)/ColLMN+ group with miRNA‐126. LMN‐containing biocompatible scaffolds, once combined with angiomiRs and their downstream effectors, promote islets survival and restore function, leading to enhanced angiogenesis and glycemic status.
Photophysical Behavior of Self‐Organizing Derivatives of 10‐ and 12‐Vertex p‐Carboranes, and their Bicyclo[2.2.2]octane and Benzene Analogues
Authors: Jakubowski Rafał , Januszko Adam , William Tilford R. , Radziszewski George J. , Pietrzak Anna , Young Victor G. , Kaszyński Piotr 
Published: February 2023

AbstractFour series of isostructural derivatives of 3‐ring liquid crystalline derivatives containing p‐carboranes (12‐vertex A, and 10‐vertex B), bicyclo[2.2.2]octane (C), or benzene (D) as the variable structural element were investigated for their mesogenic behavior and electronic interactions. Comparative studies demonstrated that the effectiveness of elements A–D in stabilization of the mesophase typically increases in the order: B<A<C<D. Absorption and emission spectroscopy for the four series and reference compounds augmented with DFT computational results revealed that the degree of electronic interactions with the connected benzene π system increases in the order C<A<B<D. Emission spectra exhibit large Stokes’ shifts for 10‐vertex derivatives (B) in solutions and in the solid state. Spectroscopic characterization was supplemented with polarization electronic spectroscopy and solvatochromic studies of selected series. Overall, 12‐vertex p‐carborane A acts as an electron withdrawing auxochromic substituent with interactions similar to those of bicyclo[2.2.2]octane, although capable of accepting some electron density in the excited state. In contrast, 10‐vertex p‐carborane B is much more interactive with the π‐aromatic electron manifold and exhibits greater ability to participate in photo‐induced CT processes. Absorption and emission energies and quantum yields (1‐51 %) for carborane derivatives, representing the D−A−D system, were compared to those of their isoelectronic zwitterionic analogues (the A−D−A system). The analysis is supplemented with four single‐crystal XRD structures.
Rationalizing the Extent of the “Sergeants‐and‐Soldiers” Effect in Supramolecular Helical Catalysts: Effect of Copper Coordination
Authors: Hammoud Ahmad , Li Yan , Martínez‐Aguirre Mayte A. , Kong Huanjun , Dubreucq Ludovic , Troufflard Claire , Bouteiller Laurent , Raynal Matthieu 
Published: February 2023

AbstractAggregation of supramolecular helices, for example through interdigitation of their alkyl side chains or through more directional supramolecular interactions, leads to hierarchical architectures with original structural and chiroptical properties. However, when a chiral monomer (the “sergeant”) is introduced as a minor component in these assemblies composed of a majority of achiral monomers (the “soldiers”), it is not clear how the aggregation changes the ability of the sergeant to induce a preferential helicity to the polymer main chain (the so‐called “sergeants‐and‐soldiers” effect). This study reports a detailed investigation of the influence of [Cu(OAc)2⋅H2O] coordination on the structure and chiroptical properties of helical hydrogen‐bonded co‐assemblies composed of a catalytically‐active benzene‐1,3,5‐tricarboxamide (BTA) monomer, acting as the “soldier”, and an enantiopure BTA monomer derived from cyclohexylalanine, playing the role of the “sergeant”. The copper actually significantly influences the extent of the “sergeants‐and‐soldiers” effect since it acts as a crosslink that induces some chiral defects in the supramolecular helices. These crosslinks appear to be preserved during the catalytic hydrosilylation of 4‐nitroacetophenone. The aggregation of helices through the formation of copper crosslinks is reversible since homochiral single helices are exclusively formed in the case of sergeant‐rich assemblies. The fact that both main chain and side chain aggregation affects the chiroptical properties of supramolecular helices must be considered in the design of elaborated chiral materials.
Specific Signal Enhancement on an RNA–Protein Interface by Dynamic Nuclear Polarization
Authors: Aladin Victoria , Sreemantula Arun K. , Biedenbänder Thomas , Marchanka Alexander , Corzilius Björn 
Published: February 2023

AbstractInvited for the cover of this issue are the groups of Alexander Marchanka at the Leibniz University of Hannover and Björn Corzilius at the University of Rostock. The image depicts the local generation of nuclear spin hyperpolarization, which selectively “illuminates” the interaction surface of a ribonuclear protein complex for solid‐state NMR spectroscopy. Read the full text of the article at 10.1002/chem.202203443.
Artificial intelligence and digital biomarker in precision pathology guiding immune therapy selection and precision oncology
Authors: Huss Ralf , Raffler Johannes , Märkl Bruno 
Published: February 2023

AbstractBackgroundThe currently available immunotherapies already changed the strategy how many cancers are treated from first to last line. Understanding even the most complex heterogeneity in tumor tissue and mapping the spatial cartography of the tumor immunity allows the best and optimized selection of immune modulating agents to (re‐)activate the patient's immune system and direct it against the individual cancer in the most effective way.Recent FindingsPrimary cancer and metastases maintain a high degree of plasticity to escape any immune surveillance and continue to evolve depending on many intrinsic and extrinsic factors In the field of immune‐oncology (IO) immune modulating agents are recognized as practice changing therapeutic modalities. Recent studies have shown that an optimal and lasting efficacy of IO therapeutics depends on the understanding of the spatial communication network and functional context of immune and cancer cells within the tumor microenvironment. Artificial intelligence (AI) provides an insight into the immune‐cancer‐network through the visualization of very complex tumor and immune interactions in cancer tissue specimens and allows the computer‐assisted development and clinical validation of such digital biomarker.ConclusionsThe successful implementation of AI‐supported digital biomarker solutions guides the clinical selection of effective immune therapeutics based on the retrieval and visualization of spatial and contextual information from cancer tissue images and standardized data. As such, computational pathology (CP) turns into “precision pathology” delivering individual therapy response prediction. Precision Pathology does not only include digital and computational solutions but also high levels of standardized processes in the routine histopathology workflow and the use of mathematical tools to support clinical and diagnostic decisions as the basic principle of a “precision oncology”.
A Bioequivalence Study With Pharmacokinetic Endpoints for Azithromycin Eye Drops
Authors: Wu Feng , Zhao Xiuli , Guo Shaojie , Ni Siyang , Dai Yuyang , Han Ying , Ma Ke , Wang Yunzhe 
Published: February 2023

AbstractAzithromycin eye drops with a bioadhesive ocular drug‐delivery system can offer a simplified dosing regimen. In this study, we compared the pharmacokinetic properties and assessed the bioequivalence of a newly developed generic azithromycin eye drop with a branded formulation. This open‐label, single‐dose, randomized, crossover, sparse‐sampling ocular bioequivalence study was conducted on 48 healthy Chinese volunteers. Tear samples were collected for up to 36 hours, and each participant was randomly allocated to one of the prespecified sampling times. Tear drug concentrations were determined using a validated liquid chromatography‐tandem mass spectrometry method. The pharmacokinetic parameters were calculated via noncompartmental analysis. A nonparametric bootstrap method was used to obtain 90% confidence intervals (CIs) for the ratios of the test and reference drugs. Tolerability was evaluated for adverse events (AEs). After bootstrapping (1000 iterations), the 90%CIs for the log‐transformed ratios of Cmax, AUC0‐t, and AUC0–∞were within the acceptable bioequivalence range (80%–125%). No moderate‐to‐severe AEs were reported for either formulation. Bioequivalence was demonstrated between the two formulations. The sparse‐sampling design with the bootstrapping technique is promising for bioequivalence studies of topical ophthalmic drugs.
Vibrationally Resolved Inner‐Shell Photoexcitation of the Molecular Anion C2−
Authors: Schippers S. , Hillenbrand P.‐M. , Perry‐Sassmannshausen A. , Buhr T. , Fuchs S. , Reinwardt S. , Trinter F. , Müller A. , Martins M. 
Published: February 2023

AbstractCarbon 1s core‐hole excitation of the molecular anion C2− has been experimentally studied at high resolution by employing the photon‐ion merged‐beams technique at a synchrotron light source. The experimental cross section for photo–double‐detachment shows a pronounced vibrational structure associated with
and
core excitations of the C2− ground level and first excited level, respectively. A detailed Franck‐Condon analysis reveals a strong contraction of the C2− molecular anion by 0.2 Å upon this core photoexcitation. The associated change of the molecule's moment of inertia leads to a noticeable rotational broadening of the observed vibrational spectral features. This broadening is accounted for in the present analysis which provides the spectroscopic parameters of the C2−
and
core‐excited levels.