keyword
https://read.qxmd.com/read/38589672/the-association-between-blood-biological-age-at-rehabilitation-admission-and-physical-activity-during-rehabilitation-in-geriatric-inpatients-resort
#21
JOURNAL ARTICLE
Jessica K Lu, Lihuan Guan, Weilan Wang, Anna G M Rojer, Fedor Galkin, Jorming Goh, Andrea B Maier
Geriatric rehabilitation inpatients have high levels of sedentary behaviour (SB) and low levels of physical activity (PA). Biological age predicted by blood biomarkers is indicative of adverse outcomes. The objective was to determine the association between blood biological age at rehabilitation admission and levels of SB and PA during rehabilitation in geriatric inpatients. Inpatients admitted to geriatric rehabilitation wards at the Royal Melbourne Hospital (Melbourne, Australia) from October 22, 2019, to March 29, 2020, in the REStORing health of acute unwell adulTs (RESORT) observational cohort were included...
April 9, 2024: GeroScience
https://read.qxmd.com/read/38585098/quantitative-analysis-of-poloxamer-188-in-biotherapeutic-process-streams-using-liquid-chromatography-triple-quadrupole-mass-spectrometry
#22
JOURNAL ARTICLE
Ciaran Buckley, Ciara MacHale, Jonathan Bones
Poloxamer 188, also known as Pluronic F-68, is an excipient added to the biotherapeutic protein-manufacturing process. Poloxamer 188 (P188) is a nonionic triblock copolymer surfactant that can be used as a shear protective excipient in bioreactors. In the current study, a method for the process clearance monitoring of poloxamer 188 during downstream processing of biotherapeutics using liquid chromatography-triple-quadrupole mass spectrometry was developed and validated. Chromatographic separation of P188 was achieved using a Phenomenex, Luna 3 μm phenyl-hexyl, 150 × 2 mm column, and quantitation was achieved using a triple-quadrupole mass spectrometer operated in selected reaction monitoring mode...
April 2, 2024: ACS Omega
https://read.qxmd.com/read/38584197/efficient-and-bright-broadband-electroluminescence-based-on-environment-friendly-metal-halide-nanoclusters
#23
JOURNAL ARTICLE
Dingshuo Zhang, Meiyi Zhu, Yifan He, Qingli Cao, Yun Gao, Hongjin Li, Guochao Lu, Qiaopeng Cui, Yongmiao Shen, Haiping He, Xingliang Dai, Zhizhen Ye
Broadband electroluminescence based on environment-friendly emitters is promising for healthy lighting yet remains an unprecedented challenge to progress. The copper halide-based emitters are competitive candidates for broadband emission, but their high-performance electroluminescence shows inadequate broad emission bandwidth of less than 90 nm. Here, we demonstrate efficient ultra-broadband electroluminescence from a copper halide (CuI) nanocluster single emitter prepared by a one-step solution synthesis-deposition process, through dedicated design of ligands and subtle selection of solvents...
April 7, 2024: Light, Science & Applications
https://read.qxmd.com/read/38582762/direct-observations-of-x-rays-produced-by-upward-positive-lightning
#24
JOURNAL ARTICLE
Toma Oregel-Chaumont, Antonio Šunjerga, Pasan Hettiarachchi, Vernon Cooray, Marcos Rubinstein, Farhad Rachidi
X-rays have been observed in natural downward cloud-to-ground lightning for over 20 years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader phases of downward negative flashes. More recently, X-rays have also been reported during the dart leader phase of upward negative flashes. In this study, we present the observations of four upward positive lightning flashes from the Säntis Tower (2.5 km ASL) in Switzerland...
April 6, 2024: Scientific Reports
https://read.qxmd.com/read/38579669/genetic-and-functional-correction-of-argininosuccinate-lyase-deficiency-using-crispr-adenine-base-editors
#25
JOURNAL ARTICLE
Sami Jalil, Timo Keskinen, Juhana Juutila, Rocio Sartori Maldonado, Liliya Euro, Anu Suomalainen, Risto Lapatto, Emilia Kuuluvainen, Ville Hietakangas, Timo Otonkoski, Mervi E Hyvönen, Kirmo Wartiovaara
Argininosuccinate lyase deficiency (ASLD) is a recessive metabolic disorder caused by variants in ASL. In an essential step in urea synthesis, ASL breaks down argininosuccinate (ASA), a pathognomonic ASLD biomarker. The severe disease forms lead to hyperammonemia, neurological injury, and even early death. The current treatments are unsatisfactory, involving a strict low-protein diet, arginine supplementation, nitrogen scavenging, and in some cases, liver transplantation. An unmet need exists for improved, efficient therapies...
April 4, 2024: American Journal of Human Genetics
https://read.qxmd.com/read/38573970/higher-number-of-steps-is-related-to-lower-endogenous-progesterone-but-not-estradiol-levels-in-women
#26
JOURNAL ARTICLE
Kinga Słojewska, Andrzej Galbarczyk, Magdalena Klimek, Anna Tubek-Krokosz, Karolina Krzych-Miłkowska, Joanna Szklarczyk, Magdalena Mijas, Monika Ścibor, Grazyna Jasienska
OBJECTIVES: Sex steroid hormones are important not only for reproduction but also for many aspects of women's health, including the risk of breast cancer. Physical activity has been shown to influence sex hormone levels in women. This study aimed to investigate a relationship between the average daily number of steps and the sex hormone (estradiol and progesterone) levels in premenopausal women. MATERIALS AND METHODS: Data were collected from 85 healthy, urban women of reproductive age who performed at least 180 minutes/week of moderate physical activity for two complete menstrual cycles...
2024: PloS One
https://read.qxmd.com/read/38573213/a-framework-for-unsupervised-profiling-of-malaria-vectors-insecticide-resistance-using-machine-learning-technique
#27
JOURNAL ARTICLE
Ashuza Kuderha, Wisdom Adingo, Bruno Chikere, Mugisho Kulimushi, Kala Jules
Background: There is a need to identify different insecticide resistance profiles that represent circumscription-encapsulation of knowledge about malaria vectors' insecticide resistance to increase our understanding of malaria vectors' insecticide resistance dynamics. Methods: Data used in this study are part of the aggregation of over 20,000 mosquito collections done between 1957 and 2018. We applied two data preprocessing steps. We developed three clustering machine learning models based on the K-means algorithm with three selected datasets...
April 3, 2024: Vector Borne and Zoonotic Diseases
https://read.qxmd.com/read/38570353/determining-a-multidisciplinary-intraoperative-strategy-in-emergency-surgery-for-bowel-obstruction-and-its-impact-on-outcomes
#28
JOURNAL ARTICLE
Mai-Britt Tolstrup, Anders Peter Skovsen, Ismail Gögenur
PURPOSE: Bowel obstruction accounts for around 50% of all emergency laparotomies. A multidisciplinary (MDT) standardized intraoperative model was applied (definitive, palliative, or damage control surgery) to identify patients suitable for a one-step, definitive surgical procedure favoring anastomosis over stoma, when undergoing surgery for bowel obstruction. The objective was to present mortality according to the strategy applied and to compare the rate of laparoscopic interventions and stoma creations to a historic cohort in surgery for bowel obstruction...
April 4, 2024: Langenbeck's Archives of Surgery
https://read.qxmd.com/read/38569313/one-step-achieving-high-performance-all-solid-state-and-all-in-one-flexible-electrochromic-supercapacitor-by-polymer-dispersed-electrochromic-device-strategy
#29
JOURNAL ARTICLE
Huan Ling, Junsen Zhang, Yu Wang, Xiping Zeng
Electrochromic devices (ECD) are widely used to regulate the transmittance of sunlight by applying a small voltage, but the drawbacks like complex layer-by-layer preparation procedures and inconvenient assembling process still exist. To address these problems, gel or solution-type all-in-one ECDs were recently developed for the simple structure, however, the leakage risk and absence of flexible large-area production have limited real applications. Herein, a novel all-solid-state and all-in-one flexible ECD was reported by originally developed polymer dispersed electrochromic device (PDECD) strategy...
March 21, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38568987/explainable-artificial-intelligence-models-for-predicting-risk-of-suicide-using-health-administrative-data-in-quebec
#30
JOURNAL ARTICLE
Fatemeh Gholi Zadeh Kharrat, Christian Gagne, Alain Lesage, Geneviève Gariépy, Jean-François Pelletier, Camille Brousseau-Paradis, Louis Rochette, Eric Pelletier, Pascale Lévesque, Mada Mohammed, JianLi Wang
Suicide is a complex, multidimensional event, and a significant challenge for prevention globally. Artificial intelligence (AI) and machine learning (ML) have emerged to harness large-scale datasets to enhance risk detection. In order to trust and act upon the predictions made with ML, more intuitive user interfaces must be validated. Thus, Interpretable AI is one of the crucial directions which could allow policy and decision makers to make reasonable and data-driven decisions that can ultimately lead to better mental health services planning and suicide prevention...
2024: PloS One
https://read.qxmd.com/read/38566013/the-state-of-emergency-medicine-in-greece-at-critical-momentum
#31
JOURNAL ARTICLE
Dimitrios Tsiftsis, Andrew Ulrich, George Notas, Anna Patrikakou, Eleanor Reid
Greece is a parliamentary republic in southeastern Europe populated by over 10 million permanent residents: 9 million reside on the mainland, with almost 4 million in the greater Athens area. The remaining 1 million populate the over 1200 Greek islands. In addition, more than 160,000 asylum-seekers reached Greece in 2022, and more than 25 million tourists have visited Greece in the last two years. Modern Greek Emergency Medicine (EM) is now in its 4th decade. The Greek government has focused the last few years on enhancing the quality of emergency services provided in public hospitals...
April 3, 2024: International Journal of Emergency Medicine
https://read.qxmd.com/read/38562711/does-diversity-beget-diversity-a-scientometric-analysis-of-over-150-000-studies-and-49-000-authors-published-in-high-impact-medical-journals-between-2007-and-2022
#32
Marie-Laure Charpignon, João Matos, Luis Nakayama, Jack Gallifant, Pia Gabrielle I Alfonso, Marisa Cobanaj, Amelia Fiske, Alexander J Gates, Frances Dominique V Ho, Urvish Jain, Mohammad Kashkooli, Liam G McCoy, Jonathan Shaffer, Naira Link Woite, Leo Anthony Celi
BACKGROUND: Health research that significantly impacts global clinical practice and policy is often published in high-impact factor (IF) medical journals. These outlets play a pivotal role in the worldwide dissemination of novel medical knowledge. However, researchers identifying as women and those affiliated with institutions in low- and middle-income countries (LMIC) have been largely underrepresented in high-IF journals across multiple fields of medicine. To evaluate disparities in gender and geographical representation among authors who have published in any of five top general medical journals, we conducted scientometric analyses using a large-scale dataset extracted from the New England Journal of Medicine (NEJM) , Journal of the American Medical Association (JAMA) , The British Medical Journal (BMJ) , The Lancet , and Nature Medicine ...
March 22, 2024: medRxiv
https://read.qxmd.com/read/38562463/application-of-machine-learning-combined-with-population-pharmacokinetics-to-improve-individual-prediction-of-vancomycin-clearance-in-simulated-adult-patients
#33
JOURNAL ARTICLE
Guodong Li, Yubo Sun, Liping Zhu
BACKGROUND AND AIM: Vancomycin, a glycopeptide antimicrobial drug. PPK has problems such as difficulty in accurately reflecting inter-individual differences, and the PPK model may not be accurate enough to predict individual pharmacokinetic parameters. Therefore, the aim of this study is to investigate whether the application of machine learning combined with the PPK method can improve the prediction of vancomycin CL in adult Chinese patients. METHODS: In the first step, a vancomycin CL prediction model for Chinese adult patients is given by PPK and Hamilton Monte Carlo sampling is used to obtain the reference CL of 1,000 patients; the second step is to obtain the final prediction model by machine learning using an appropriate model for the predictive factor and the reference CL; and the third step is to randomly select, in the simulated data, a total of 250 patients for prediction effect evaluation...
2024: Frontiers in Pharmacology
https://read.qxmd.com/read/38558021/lc-ms-ms-method-for-quick-detection-of-vonoprazan-fumarate-in-human-plasma-development-validation-and-its-application-to-a-bioequivalence-study
#34
JOURNAL ARTICLE
Xinyan Chen, Tao Chen, Yunzhe Huang, Minhui Wang, Yaqin Wang, Ping Wu, Xiaocui Xia, Pengfei Du, Jianbang Wu, Jie Shen, Yuanwei Jia
A liquid chromatography-tandem mass spectrometry method with vonoprazan fumarate-d4 as a stable isotope-labeled internal standard was developed and validated aiming at quantification of vonoprazan fumarate in human plasma for a bioequivalence study. Chromatographic separation was achieved by acetonitrile one-step protein precipitation using a gradient elution of 0.1% formic acid aqueous solution and acetonitrile with a run time of 3.65 min. Detection was carried out on a tandem mass spectrometer in multiple reaction monitoring mode via a positive electrospray ionization interface...
April 1, 2024: Biomedical Chromatography: BMC
https://read.qxmd.com/read/38555099/commentary-value-of-information-case-study-strongly-supports-use-of-the-threshold-of-toxicological-concern-ttc
#35
JOURNAL ARTICLE
Ted W Simon, Jessica Ryman, Richard A Becker
A Value of Information (VOI) analysis can play a key role in decision-making for adopting new approach methodologies (NAMs). We applied EPA's recently developed VOI framework to the Threshold of Toxicological Concern (TTC). Obtaining/deriving a TTC value for use as a toxicity reference value (TRV) for substances with limited toxicity data was shown to provide equivalent or greater health protection, immense return on investment (ROI), greater net benefit, and substantially lower costs of delay (CoD) compared with TRVs derived from either traditional human health assessment (THHA) chronic toxicity testing in lab animals or the 5-day in vivo EPA Transcriptomic Assessment Product (ETAP)...
March 28, 2024: Regulatory Toxicology and Pharmacology: RTP
https://read.qxmd.com/read/38553775/simultaneous-determination-of-d-and-l-enantiomers-of-2-hydroxyglutarate-by-uhplc-ms-ms-method-in-human-biological-fluids-and-its-clinical-application
#36
JOURNAL ARTICLE
Xiaoqing Li, Yunhai Bo, Le Le, Fen Yang
2-hydroxyglutarate has limited abundance in normal tissues but a high level under certain pathologic conditions. To clarify the diagnostic value of two chiral isomers of 2-hydroxyglutarate in plasma and urine of Chinese cancer patients, an ultra-high performance liquid chromatography-tandem mass spectrometric method was developed for simultaneous quantification of D-/L-2-hydroxyglutarate. The selected D-/L-2-hydroxyglutarate-d5 as internal standards were added to samples before the SPE on Waters Oasis® MAX 96-Well plate (30 μm, 60 mg)...
March 28, 2024: Journal of Chromatographic Science
https://read.qxmd.com/read/38552595/development-and-validation-of-an-lc-ms-ms-method-for-quantifying-diamorphine-and-its-major-metabolites-6-monoacetylmorphine-morphine-morphine-3-glucuronide-and-morphine-6-glucuronide-in-human-plasma
#37
JOURNAL ARTICLE
Jan Thomann, Severin B Vogt, Adrian Guessoum, Maximilian Meyer, Marc Vogel, Matthias E Liechti, Dino Luethi, Urs Duthaler
Diamorphine, commonly known as heroin, is a semi-synthetic opioid analgesic. In the context of heroin-assisted treatment for opioid-dependent patients, diamorphine is mostly administered intravenously. However, recent attention has shifted towards intranasal administration as a better-tolerated alternative to the intravenous route. Here, we developed and validated a rapid bioanalytical method for the simultaneous quantification of diamorphine and its major metabolites 6-monoacetylmorphine, morphine, morphine-3-glucuronide, and morphine-6-glucuronide in human plasma using liquid chromatography-tandem mass spectrometry (LC-MS/MS)...
March 25, 2024: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://read.qxmd.com/read/38547081/a-two-step-bayesian-network-approach-to-identify-key-snps-associated-to-multiple-phenotypic-traits-in-four-purebred-laying-hen-lines
#38
JOURNAL ARTICLE
Ismalia Bouba, Emiliano A Videla Rodriguez, V Anne Smith, Henry van den Brand, T Bas Rodenburg, Bram Visser
When purebred laying hen chicks hatch, they remain at a rearing farm until approximately 17 weeks of age, after which they are transferred to a laying farm. Chicks or pullets are removed from the flocks during these 17 weeks if they display any rearing abnormality. The aim of this study was to investigate associations between single nucleotide polymorphisms (SNPs) and rearing success of 4 purebred White Leghorns layer lines by implementing a Bayesian network approach. Phenotypic traits and SNPs of four purebred genetic White Leghorn layer lines were available for 23,000 rearing batches obtained between 2010 and 2020...
2024: PloS One
https://read.qxmd.com/read/38546180/facilitating-rapid-na-storage-through-mowse-c-heterostructure-construction-and-synergistic-electrolyte-matching-strategy
#39
JOURNAL ARTICLE
Jian Wang, Yachuan Shao, Yanqiang Ma, Di Zhang, Shujahadeen B Aziz, Zhaojin Li, Haw Jiunn Woo, Ramesh T Subramaniam, Bo Wang
The realization of sodium-ion devices with high-power density and long-cycle capability is challenging due to the difficulties of carrier diffusion and electrode fragmentation in transition metal selenide anodes. Herein, a Mo/W-based metal-organic framework is constructed by a one-step method through rational selection, after which MoWSe/C heterostructures with large angles are synthesized by a facile selenization/carbonization strategy. Through physical characterization and theoretical calculations, the synthesized MoWSe/C electrode delivers obvious structural advantages and excellent electrochemical performance in an ethylene glycol dimethyl ether electrolyte...
March 28, 2024: ACS Nano
https://read.qxmd.com/read/38545678/a-protocol-for-harvesting-biodiversity-data-from-facebook
#40
JOURNAL ARTICLE
Shawan Chowdhury, Sultan Ahmed, Shofiul Alam, Corey T Callaghan, Priyanka Das, Moreno Di Marco, Enrico Di Minin, Ivan Jarić, Mahzabin Muzahid Labi, Md Rokonuzzaman, Uri Roll, Valerio Sbragaglia, Asma Siddika, Aletta Bonn
The expanding use of community science platforms has led to an exponential increase in biodiversity data in global repositories. Yet, understanding of species distributions remains patchy. Biodiversity data from social media can potentially reduce the global biodiversity knowledge gap. However, practical guidelines and standardized methods for harvesting such data are nonexistent. Following data privacy and protection safeguards, we devised a standardized method for extracting species distribution records from Facebook groups that allow access to their data...
March 28, 2024: Conservation Biology
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