bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rational Design of the β‐Bulge Gate in a Green Fluorescent Protein Accelerates the Kinetics of Sulfate Sensing**
Authors: Ong Whitney S. Y. , Ji Ke , Pathiranage Vishaka , Maydew Caden , Baek Kiheon , Villones Rhiza Lyne E. , Meloni Gabriele , Walker Alice R. , Dodani Sheel C. 
Published: April 2023

AbstractDetection of anions in complex aqueous media is a fundamental challenge with practical utility that can be addressed by supramolecular chemistry. Biomolecular hosts such as proteins can be used and adapted as an alternative to synthetic hosts. Here, we report how the mutagenesis of the β‐bulge residues (D137 and W138) in mNeonGreen, a bright, monomeric fluorescent protein, unlocks and tunes the anion preference at physiological pH for sulfate, resulting in the turn‐off sensor SulfOFF‐1. This unprecedented sensing arises from an enhancement in the kinetics of binding, largely driven by position 138. In line with these data, molecular dynamics (MD) simulations capture how the coordinated entry and gating of sulfate into the β‐barrel is eliminated upon mutagenesis to facilitate binding and fluorescence quenching.
Elaborating E/Z‐Geometry of Alkenes via Cage‐Confined Arylation Catalysis of Terminal Olefins
Authors: Wang Yuanfan , Chen Jie , Yang Jie , Jiao Zhiwei , Su Cheng‐Yong 
Published: April 2023

AbstractA visible light photosensitizing metal‐organic cage is applied as an artificial supramolecular reactor to control the reaction of aryl radicals with terminal olefins under green light/solvent conditions, which facilitates selective transformation in the confined enzyme‐mimicking environment to give a series of geometrically defined E/Z‐alkenes. The hydrophobic cage displays good host–guest inclusion with aromatic substrates, promoting Meerwein arylation and protecting E‐isomeric products during reaction; while a small amount of benzonitrile can turn on efficient E→Z isomerization. Besides π–π stacking, the hydrogen bonding and halogen bonding interactions also act as control forces for the arylation of aliphatic terminal olefins known as poor acceptors in classic Meerwein arylation. The application of this switchable cage‐confined arylation catalysis has been demonstrated by the syntheses of Tapinarof and a marine natural product from the same substrate via controllable E/Z selectivity.
Tungstate‐mediated In‐situ Passivation of Grain Boundary Grooves in Perovskite Solar Cells
Authors: Fan Rundong , Song Qizhen , Huang Zijian , Ma Yue , Xiao Mengqi , Huang Xudan , Zai Huachao , Kang Jiaqian , Xie Haipeng , Gao Yongli , Wang Lina , Zhang Yu , Wang Lan , Wang Feng , Zhang Xiao , Zhou Wentao , Li Nengxu , Wang Xueyun , Bai Yang , Liu Guilin , Chen Qi , Wang Lifen , Zhou Huanping 
Published: April 2023

AbstractPossessed with advantageous optoelectronic properties, perovskites have boosted the rapid development of solution‐processed solar cells. The performance of perovskite solar cells (PSCs) is significantly weakened by the carrier loss at grain boundary grooves (GBGs); however, it receives limited attention and there lacks effective approach to solve this issue. Herein, for the first time, we constructed the tungstate/perovskite heterointerface via a “two step” in situ reaction approach that provides effective defect passivation and ensures efficient carrier dynamics at the GBGs. The exposed perovskite at grain boundaries is converted to wide‐band‐gap PbWO4 via an in‐situ reaction between Pb2+ and tungstate ions, which passivate defects due to the strong ionic bonding. Moreover, recombination loss is further suppressed via the heterointerface energetics modification based on an additional transformation from PbWO4 to CaWO4. PSCs based on this groove modification strategy showed good universality in both normal and inverted structure, with an improved efficiency of 23.25 % in the n‐i‐p device and 23.33 % in the p‐i‐n device. Stable power output of the modified device could maintain 91.7 % after around 1100 h, and the device efficiency could retain 92.5 % after aging in air for around 2110 h, and 93.1 % after aging at 85 °C in N2 for 972 h.
Growth and microanatomy of the paranasal sinuses in two species of New World monkeys
Authors: Smith Timothy D. , Zinreich S. James , Márquez Samuel , King Scot E. E. , Evans Sian , DeLeon Valerie B. 
Published: April 2023

AbstractParanasal sinuses of living apes and humans grow with positive allometry, suggesting a novel mechanism for bone enlargement. Here, we examine the paranasal sinuses of the owl monkey (Aotus spp.) and a tamarin (Saguinus midas) across postnatal development. The prediction that paranasal sinuses grow disproportionately faster than the main nasal chamber is tested. We used diffusible iodine‐based contrast‐enhanced computed tomography and histology to study sinuses in eight Aotus and three tamarins ranging from newborn to adult ages. Sinuses were segmented at the mucosa‐air cavity interface and measured in volume. All sinuses were lined by a ciliated respiratory epithelium, except for the ethmoid air cells in Aotus, which are lined in part by olfactory epithelium. An age comparison indicates that only the maxillary sinus and ethmoid air cells are present in newborns, and two additional sinuses (invading the orbitosphenoid and the frontal bone), do not appear until late infancy or later. Comparing newborns and adults, the main nasal airway is 10 times larger in the adult Aotus and ~ 6.5 times larger in adult Saguinus. In contrast, the maxillary sinus far exceeds this magnitude of difference: 24 times larger in the adult Aotus and 46 times larger in adult Saguinus. The frontal sinuses add significantly to total paranasal space volume in both species, but this growth is likely delayed until juvenile age. Results suggest ethmoid air cells expand the least. These results support our prediction that most paranasal sinuses have a distinctly higher growth rate compared to the main nasal chamber.
New data on the mammalian fauna from the late middle Eocene (MP 15–16) of Mazaterón (Soria, Spain): The youngest presence of the genus Prodissopsalis (Hyaenodonta, Hyaenodontidae) in Europe
Authors: Salesa Manuel J. , Siliceo Gema , Antón Mauricio , Martínez Irene , Ortega Francisco 
Published: April 2023

AbstractThe Hyaenodonta were the most diverse carnivorous mammals in the European Eocene and were classically divided into three subfamilies: Sinopaninae, Arfianinae, and Proviverrinae, with this latter being the most successful of the three, as it exhibited a much larger geographic and temporal range. This classification is currently abandoned, as cladistic analyses of Hyaenodonta showed that several of these groups were paraphyletic. In any case, the former “proviverrines” were European endemic hyaenodontids which occupied the niche of small to medium‐sized predators from the Ypresian (MP7) to the Priabonian (MP19). Recent phylogenetic proposals recognize the “Eurotherium clade” including this latter genus, besides Cartierodon and Prodissopsalis. A single species is known for Prodissopsalis, Prodissopsalis eocaenicus, previously recorded in European fossil sites of MP 12 to MP 14; nevertheless, the new material studied here, a mandible of a subadult individual from the late Middle Eocene (Bartonian, MP 15–16) site of La Solana (Mazaterón, Soria, Spain) constitutes a new species of Prodissopsalis and the youngest record of this genus up to now, extending its chronological range and remarking the shelter role of the northwestern region of the Iberian Peninsula during the Middle and Late Eocene. The new species, Prodissopsalis jimenezi provides new data not only on the eruption sequence of the genus, but also on the evolution of its dental adaptations, as the new species exhibits a more trenchant, hypercarnivorous dentition in comparison to the more primitive species P. eocaenicus, which would point toward a refining of the hunting abilities of this hyaenodont during the Middle Eocene.
Comparing the emotional experiences of students in similar dissection‐ and prosection‐based medical gross anatomy courses: A mixed‐methods study
Authors: Lai Emily R. , Rukavina Nadia A. , Wisco Jonathan J. , Zumwalt Ann C. 
Published: April 2023

AbstractThe anatomy laboratory can incite strong emotional reactions in students, which can in turn facilitate growth in empathy, care for vulnerable others, and professionalism. Despite this, little is known about the relative emotional impacts of different laboratory modalities. The response to the COVID‐19 pandemic created an opportunity to compare the emotional experiences of students in similar courses in which one group of students dissected donors and the other group learned from prosected donors. The courses were otherwise the same in content, length, instructional design, and assessment. Students in the dissection‐based (Fall 2019) and prosection‐based (Fall 2020) courses completed a previously validated survey that used quantitative and qualitative questions to assess their feelings about the donors and the anatomy laboratory experience. Students in both cohorts reported overall appreciation for having had the experience. Negative themes experienced by both groups included feeling anxiety, worries about depersonalizing donors, and physical discomfort in the laboratory. Students in the dissection course reported stronger connections with the donors and the donors' families but also more frequently felt negative feelings such as disgust, anxiety, and feeling alone. Students in the prosection course reported more consistently positive responses but worried about not using the donors to the fullest extent possible. Regardless of pedagogical design, students have complex emotional experiences in the anatomy laboratory and our results indicate that these feelings may be more intense in the context of dissection. Anatomists should foster educational settings that enable students to learn to process complex or challenging emotions.
Motivational factors, attitudes, and knowledge about the cadaveric body donation program among body donors in Myanmar
Authors: Oo Eve Mon , Saw Khin Ei Ei , Htun Thaw Zin , Latt Zaw Zaw 
Published: April 2023

AbstractTo achieve the simple goal of cadaveric body donation (CBD) program–gaining deceased donors–numerous scientific studies have been conducted, including the current study. This cross‐sectional descriptive study used questionnaires to assess the motivational factors, attitudes, and knowledge of registered body donor participants toward CBD. Among 372 respondents, most (80.6%) were motivated by specific reasons such as “to save lives through medical education,” “to contribute to medical research,” and “to help medical students.” Most respondents had good attitudes (61.7%) but poor knowledge (55.9%) about the CBD program, and there was no association among them (p = 0.08). However, the good knowledge and good attitude level were found 1.7 times (p = 0.02) and 2.4 times (p = 0.005) more, respectively, in basic‐educated respondents than in highly educated respondents, implying the influence of peer conversation and message diffusion instead of knowledge or attitudes acquired through education. Additionally, 75% of respondents had co‐registration within their family, peers were chosen by 66.7% of respondents as a source of information, and married respondents had 1.8 times better knowledge than unmarried respondents (p = 0.01), indicating the possibility of peer influence and growing peer communication. This study explored the poor knowledge status of registered donors, who are the cornerstone of knowledge propagation in the general population. Hence, after implementing this study, a knowledge‐raising campaign for registered donors was conducted by distributing pamphlets about the CBD program, explaining keystone information, and supplementing a follow‐up study. Moreover, this study will help us plan further strategies for program enhancement.
Theoretical Mechanistic Study of C(sp3)−C(sp2) Cross‐Coupling by Photoredox‐Mediated Iridium(III)/Nickel(II)/Quinuclidine Triple Catalysis
Authors: Wang Shuang , Li Runhan , Su Zhongmin , Zhu Bo , Guan Wei 
Published: April 2023

AbstractThe photoredox‐mediated iridium(III)/nickel(II)/3‐acetoxyquinuclidine triple‐synergistic catalysis was comprehensively investigated by taking a C(sp3)−C(sp2) bond cross‐coupling as a reaction model using density functional theory (DFT) calculations. The synergistic mechanism of the triple catalytic system includes a reductive quenching cycle (IrIII−*IrIII−IrII−IrIII), an organocatalytic cycle, and a nickel catalytic cycle (NiII−NiI−NiIII−[NiIII]⊖−NiII). Electronic process analysis shows that 3‐acetoxyquinuclidine acts as a hydrogen atom transfer (HAT) catalyst to regioselectively provide α‐carbon centered radical. Due to more favorable oxidative addition of C−Br to Ni(I) than HAT to avoid the formation of stable Ni(II) species, the generated α‐carbon centered radical prefers to be captured by oxidative addition product Ni(III) to form an unusual [NiIII]⊖C⊕ species when 3‐acetoxyquinuclidine was employed. These theoretical insights not only provide deep electronic process understanding of the photoredox‐mediated iridium(III)/nickel(II) synergistic catalysis, but also clarify the electron‐withdrawing group effect of quinuclidine, which has a potential guiding role for further development of new cross‐coupling reactions.
Digitaler Zwilling Straße
Authors: Kaliske Michael , Wollny Ines 
Published: April 2023

AbstractBau und Betrieb der Straßeninfrastruktur stehen aktuell vor enormen Herausforderungen: steigender Verkehr, Klimawandel, notwendige Wartungsarbeiten, zunehmend autonomer Verkehr etc. Gleichzeitig werden Potenziale technischer Innovationen (u. a. Digitalisierung, Sensorik, Industrie 4.0) im Straßenwesen bislang kaum genutzt. Um zukünftig einen nachhaltigeren, sichereren und effizienteren Bau und Betrieb von Straßen zu ermöglichen, wird im Sonderforschungsbereich/Transregio 339 ein Digitaler Zwilling für die Straße der Zukunft entwickelt. Der vorliegende Beitrag wurde am 14. Okt. 2022 im Rahmen des 26. Dresdner Baustatik Seminars präsentiert.
Probing the combination of erlotinib hydrochloride, an anticancer drug, and human serum albumin: Spectroscopic, molecular docking, and molecular dynamic analyses
Authors: Shahraki Somaye , Razmara Zohreh , Delarami Hojat Samareh , Poorsargol Mahdiye 
Published: April 2023

AbstractHuman serum albumin (HSA) is a globular and monomeric protein in plasma that transports many drugs and compounds. Binding of some drugs to HSA can lead to changes in its stability and biological function. We investigated the binding interactions between erlotinib hydrochloride (Erlo) and HSA. Erlo is used to treat lung, pancreatic, and some other cancers. Experimental data showed that the fluorescence emission of the protein was quenched by Erlo using a static quenching mechanism. The calculation of the binding constant, Kb (1.57 × 105 M−1 at 300 K), confirmed the existence of a moderate binding interaction between Erlo and HSA. The interaction was enthalpy driven, spontaneous, and exothermic. The calculated thermodynamic parameters in agreement with simulation and molecular docking data showed that van der Waals and hydrogen bond forces played an important role in the interaction process. Molecular docking results indicated that Erlo has more affinity to bind to subdomain IIA (site I) of HSA. Molecular dynamics simulation analysis showed that the protein is stable in the presence of Erlo under simulation conditions.
Therapeutic extracellular vesicle production is substantially increased by inhibition of cellular cholesterol biosynthesis
Authors: Martin Shelly , McConnell Russell , Harrison Rane , Jang Su Chul , Sia Chang Ling , Kamerkar Sushrut , Duboff Anna , Jacob Lisa , Finn Jonathan , Estes Scott 
Published: April 2023

AbstractExtracellular vesicles (EVs) are a new therapeutic modality with the promise to treat many diseases through their ability to deliver diverse molecular cargo. As with other emerging modalities transitioning into the industrialization phase, all aspects of the manufacturing process are rich with opportunities to enhance the ability to deliver these medicines to patients. With the goal of improving cell culture EV productivity, we have utilized high throughput siRNA screens to identify the underlying genetic pathways that regulate EV productivity to inform rational host cell line engineering and media development approaches. The screens identified multiple metabolic pathways of potential interest; one of which was validated and shown to be a ready implementable, cost‐effective strategy to increase EV titers. We show that both EV volumetric and specific productivity from HEK293 and CHO‐S were increased in a dose and cell line‐dependent manner up to ninefold when cholesterol synthesis was inhibited by the inclusion of statins in the cell culture media. In addition, we show in response to statin treatment, elevation of EV markers in mesenchymal stem cell (MSC) cell culture media suggesting this approach can also be applicable to MSC EVs. Furthermore, we show that the EVs produced from statin‐treated HEK293 cultures are effectively loaded by both endogenous and exogenous loading methods and have equivalent in vitro or in vivo potency relative to EVs from untreated cultures.
Fluorescent immunochromatography of vancomycin in plasma: A rapid and sensitive quantitative analysis
Authors: Shen Minmin , Gu Haiying , Deng Kai , Li Zhongpeng , Yuan Yumei , He Yangjin , Jin Yin , Lin Nengming 
Published: April 2023

AbstractVancomycin (VAN) has a narrow therapeutic window and variable pharmacokinetic properties, which require timely monitoring of plasma concentration to adjust the dosage for better effectiveness. A sensitive and quantitative immunochromatographic method was developed to detect VAN in plasma. The linear response range of the method to detect plasma VAN was 1.25–50 μg/mL. The intra‐ and inter‐assay coefficients were 4.68% and 8.81%, respectively, while the recovery was 89.10%–98.32%. The clinical comparative experiment results demonstrated a good correlation (r > 0.90) between the fluorescent immunochromatographic strip test and the mass spectrum. In this study, a simple, rapid, and high‐sensitivity immunochromatographic method was established for detecting VAN, which helped establish the basis for further application of monitoring plasma concentration.
Responsive hydrogel dressings for intelligent wound management
Authors: Wang Suxi , Wu Wen‐Ya , Yeo Jayven Chee Chuan , Soo Xiang Yun Debbie , Thitsartarn Warintorn , Liu Songlin , Tan Beng Hoon , Suwardi Ady , Li Zibiao , Zhu Qiang , Loh Xian Jun 
Published: April 2023

AbstractDue to global aging problems, the rising number of patients suffering from chronic or hard‐to‐heal acute wounds imposes a significant burden on healthcare systems. Wound healing is a complicated and dynamic physiological process with distinct molecular and cellular levels at each phase. Despite numerous strategies and advanced wound dressings being developed, successful wound management through smart dressing materials that can adapt to changing wound microenvironments and address the needs of wounds at different stages remains a big challenge. Over the last decade, hydrogel‐based dressings have emerged as one of the most potent biomaterials for wound treatment with favorable biological characteristics and a high potential for active intervention during the wound‐curing process. In the current contribution, we present the most recent progress in smart hydrogel dressings that can regulate the release of therapeutics in response to external stimuli (such as light) as well as endogenous changes in wound environments (e.g., temperature, pH, glucose, and reactive oxygen species) to facilitate wound healing. We also introduce the cutting‐edge technologies of intelligent “sense‐and‐treat” dressings through a combination of built‐in sensors or sensing molecules with responsive hydrogels, which enable real‐time monitoring of wound conditions and prompt on‐demand therapy.
Perceived changes in the mental well‐being among Nigerians due to Ramadan Intermittent Fasting during the COVID‐19 pandemic
Authors: Sulaiman Sahabi Kabir , Tsiga‐Ahmed Fatimah Isma'il , Arora Teresa , Faris MoezAlIslam E. , Musa Muhammad Sale , Kareem Yesir Adeyemi , Dayyab Farouq Muhammad , Hussein Aminu , Sale Shehu , Javaid Syed Fahad , Khan Moien AB 
Published: April 2023

AbstractIntroductionMuslims fast every year during the month of Ramadan from dawn until dusk. This study examined mental well‐being and correlating factors among Nigerian adults who observed Ramadan intermittent fasting (RIF).MethodsA validated generalized anxiety disorder‐2 and Patient Health Questionnaire‐2, the four‐item spiritual well‐being index, and the Islamic intrinsic religiosity questionnaire were used to collect data about mental well‐being (depression, anxiety), spirituality, and intrinsic religiosity through a web‐based survey between the May 9, 2021 (27th of Ramadan, 1442) and the June 4, 2021 (29th of Shawwal, 1442). We studied the mental well‐being of respondents over a period of 4 weeks before Ramadan (BR) and during the 4 weeks of Ramadan between the April 12, 2021 and the May 12, 2021(DR). Multinomial regression analysis was used to determine the factors associated with depression and anxiety. This research did not receive any grant or funding.ResultsA total of 770 adult Nigerians who observed RIF study were included in this cross‐sectional study. When compared to mental well‐being BR, observing RIF by Nigerian adult respondents was associated with a significant improvement in their mental well‐being. A higher proportion of respondents felt less depressed DR (61.3% vs. 56.5%. < .001). Interest and pleasure in doing things improved DR than BR (p= 0.007) and respondents felt less nervous and anxious (60.7% vs. 57.1%, respectively; p <.001). Mental well‐being was independently associated with sociodemographic characteristics, physical activity, and perceived relationships.ConclusionsThis study found significant improvement in mental well‐being DR compared to BR despite the ongoing COVID‐19 pandemic. The effect of RIF on mental well‐being needs further research with multicentric studies among different sets of ethnic populations.