keyword
https://read.qxmd.com/read/38492866/seven-new-triterpenoids-from-the-roots-of-adenophora-tetraphylla-thub-fisch
#21
JOURNAL ARTICLE
Zhe-Yue Han, Jia-Tong Wu, Yu-Xuan Lin, Yu Bi, Anam Naseem, Zhi-Chao Hao, Juan Pan, Wei Guan, Hai-Xue Kuang, Qing-Shan Chen, Li-Li Zhang, Yan Liu, Bing-You Yang
Seven new triterpenoids, named Adeterpenoids A-G (1-7) and eight known compounds (8-15), were isolated from 70% ethanol extract of the roots of Adenophora tetraphylla (Thub.) Fisch. The compounds from it were separated by column chromatography techniques such as silica gel, ODS, and preparative liquid chromatography. Their structures were clarified based on extensive spectral analysis (1D, 2D-NMR, HR-ESI-MS, IR, UV, and CD) and comparison with the literature. At the same time, all compounds were evaluated for their cytotoxic activity against the LN229 (human glioma cell line)...
March 16, 2024: Fitoterapia
https://read.qxmd.com/read/38488126/a-linker-selective-retention-strategy-to-construct-hierarchical-porous-metal-organic-frameworks-with-high-catalytic-activity-for-oxidative-desulfurization
#22
JOURNAL ARTICLE
Xiaowen Sun, Yun-Feng Gu, Xiao-Min Zhang, Yan Shen, Dan-Hong Wang, Shu-Ming Zhang, Mei-Hui Yu, Ze Chang
In order to improve the oxidative desulfurization (ODS) performance of MOF materials, an effective way is to convert a microporous MOF into a hierarchical porous MOF (HP-MOF) by utilizing the linker selective retention strategy. Herein, UiO-66 with the introduction of an unstable linker ligand (dihydro-1,2,4,5-tetrazine-3,6-dicarboxylate, dhtz) can selectively remove dhtz ligands to form HP-MOF (HP-UiO-66-dhtz) through heat treatment at high temperature. While maintaining the original structure of UiO-66, HP-UiO-66-dhtz features mesopores and abundant Lewis acid sites, showing excellent ODS performance for diphenylthiophene (DBT)...
March 15, 2024: Dalton Transactions: An International Journal of Inorganic Chemistry
https://read.qxmd.com/read/38482932/in-situ-implanting-zrw-2-o-7-oh-2-h-2-o-2-nanorods-into-hierarchical-functionalized-metal-organic-framework-via-solvent-free-approach-for-upgrading-catalytic-performance
#23
JOURNAL ARTICLE
Gan Ye, Guangming Shi, Hanlu Wang, Xingye Zeng, Lei Wu, Jun Zhou, Qiuli Zhang, Jinshan Wei, Zhiming Li, Long Nie, Jin Wang
Host-guest catalyst provides new opportunities for targeted applications and the development of new strategies for preparing host-guest catalysts is highly desired. Herein, an in situ solvent-free approach is developed for implanting ZrW2 O7 (OH)2 (H2 O)2 nanorods (ZrW-NR) in nitro-functionalized UiO-66(Zr) (UiO-66(Zr)-NO2 ) with hierarchical porosity, and the encapsulation of ZrW-NR enables the as-prepared host-guest catalyst remarkably enhanced catalytic performance for both for oxidative desulfurization (ODS) and acetalization reactions...
March 14, 2024: Small
https://read.qxmd.com/read/38482160/a-3d-microprinted-coaxial-nozzle-for-fabricating-long-flexible-microfluidic-tubing
#24
JOURNAL ARTICLE
Olivia M Young, Bailey M Felix, Mark D Fuge, Axel Krieger, Ryan D Sochol
A variety of emerging applications, particularly those in medical and soft robotics fields, are predicated on the ability to fabricate long, flexible meso/microfluidic tubing with high customization. To address this need, here we present a hybrid additive manufacturing (or "three-dimensional (3D) printing") strategy that involves three key steps: ( i ) using the "Vat Photopolymerization (VPP) technique, "Liquid-Crystal Display (LCD)" 3D printing to print a bulk microfluidic device with three inlets and three concentric outlets; ( ii ) using "Two-Photon Direct Laser Writing (DLW)" to 3D microprint a coaxial nozzle directly atop the concentric outlets of the bulk microdevice, and then ( iii ) extruding paraffin oil and a liquid-phase photocurable resin through the coaxial nozzle and into a polydimethylsiloxane (PDMS) channel for UV exposure, ultimately producing the desired tubing...
January 2024: Proceedings—IEEE International Conference on Micro Electro Mechanical Systems
https://read.qxmd.com/read/38478027/achievement-of-therapeutic-antibiotic-exposures-using-bayesian-dosing-software-in-critically-unwell-children-and-adults-with-sepsis
#25
JOURNAL ARTICLE
Gene G Chai, Quyen Tu, Menino O Cotta, Michelle J Bauer, Ross Balch, Charles Okafor, Tracy Comans, Peter Kruger, Jason Meyer, Kiran Shekar, Kara Brady, Cheryl Fourie, Natalie Sharp, Luminita Vlad, David Whiley, Jacobus P J Ungerer, Brett C Mcwhinney, Andras Farkas, David L Paterson, Julia E Clark, Krispin Hajkowicz, Sainath Raman, Seweryn Bialasiewicz, Jeffrey Lipman, Brian M Forde, Patrick N A Harris, Luregn J Schlapbach, Lachlan Coin, Jason A Roberts, Adam D Irwin
PURPOSE: Early recognition and effective treatment of sepsis improves outcomes in critically ill patients. However, antibiotic exposures are frequently suboptimal in the intensive care unit (ICU) setting. We describe the feasibility of the Bayesian dosing software Individually Designed Optimum Dosing Strategies (ID-ODS™), to reduce time to effective antibiotic exposure in children and adults with sepsis in ICU. METHODS: A multi-centre prospective, non-randomised interventional trial in three adult ICUs and one paediatric ICU...
March 13, 2024: Intensive Care Medicine
https://read.qxmd.com/read/38473616/dislocation-hardening-in-a-new-manufacturing-route-of-ferritic-oxide-dispersion-strengthened-fe-14cr-cladding-tube
#26
JOURNAL ARTICLE
Freddy Salliot, András Borbély, Denis Sornin, Roland Logé, Gabriel Spartacus, Hadrien Leguy, Thierry Baudin, Yann de Carlan
The microstructure evolution associated with the cold forming sequence of an Fe-14Cr-1W-0.3Ti-0.3Y2 O3 grade ferritic stainless steel strengthened by dispersion of nano oxides (ODS) was investigated. The material, initially hot extruded at 1100 °C and then shaped into cladding tube geometry via HPTR cold pilgering, shows a high microstructure stability that affects stress release heat treatment efficiency. Each step of the process was analyzed to better understand the microstructure stability of the material...
March 1, 2024: Materials
https://read.qxmd.com/read/38469296/the-subdued-post-boost-spike-directed-secondary-igg-antibody-response-in-ugandan-recipients-of-the-pfizer-biontech-bnt162b2-vaccine-has-implications-for-local-vaccination-policies
#27
JOURNAL ARTICLE
Violet Ankunda, Joseph Ssebwana Katende, Gerald Kevin Oluka, Jackson Sembera, Claire Baine, Geoffrey Odoch, Peter Ejou, Laban Kato, Pontiano Kaleebu, Jennifer Serwanga
INTRODUCTION: This study aimed to delineate longitudinal antibody responses to the Pfizer-BioNTech BNT162b2 COVID-19 vaccine within the Ugandan subset of the Sub-Saharan African (SSA) demographic, filling a significant gap in global datasets. METHODS: We enrolled 48 participants and collected 320 specimens over 12 months after the primary vaccination dose. A validated enzyme-linked immunosorbent assay (ELISA) was used to quantify SARS-CoV-2-specific IgG, IgM, and IgA antibody concentrations (ng/ml) and optical densities (ODs)...
2024: Frontiers in Immunology
https://read.qxmd.com/read/38460217/co-located-heroin-assisted-treatment-within-primary-care-a-preliminary-analysis-of-the-implications-for-healthcare-access-cost-and-treatment-delivery-in-the-uk
#28
JOURNAL ARTICLE
Hannah L Poulter, Helen J Moore, Danny Ahmed, Fleur Riley, Tammi Walker, Magdalena Harris
BACKGROUND: The UK is experiencing its highest rate of drug related deaths in 25 years. Poor and inconsistent access to healthcare negatively impacts health outcomes for people who use drugs. Innovation in models of care which promote access and availability of physical treatment is fundamental. Heroin Assisted Treatment (HAT) is a treatment modality targeted at the most marginalised people who use drugs, at high risk of mortality and morbidity. The first service-provider initiated HAT service in the UK ran between October 2019 and November 2022 in Middlesbrough, England...
March 8, 2024: International Journal on Drug Policy
https://read.qxmd.com/read/38458474/vitamin-c-deficiency-alters-the-transcriptome-of-the-rat-brain-in-a-glucocorticoid-dependent-manner-leading-to-microglial-activation-and-reduced-neurogenesis
#29
JOURNAL ARTICLE
Shunta Goto, Natsuki Kojima, Miyu Komori, Noe Kawade, Kenzi Oshima, Daita Nadano, Nobumitsu Sasaki, Fumihiko Horio, Tsukasa Matsuda, Shinji Miyata
Vitamin C (VitC) is maintained at high concentrations in the brain and is an essential micronutrient for brain function. VitC deficiency leads to neuropsychiatric scurvy, which is characterized by depression and cognitive impairment. However, the molecular mechanism by which mild VitC deficiency impairs brain function is currently unknown. In the present study, we conducted RNA sequencing analysis and found that a short-term VitC deficiency altered the brain transcriptome in ODS rats, which cannot synthesize VitC...
March 6, 2024: Journal of Nutritional Biochemistry
https://read.qxmd.com/read/38456664/development-and-validation-of-a-simple-and-efficient-method-for-the-analysis-of-commercial-formulations-containing-clopyralid-picloram-and-aminopyralid-as-active-ingredients
#30
JOURNAL ARTICLE
Patrycja Marczewska, Joanna Rolnik, Monika Szalbot, Tomasz Stobiecki
Liquid chromatography plays a pivotal role in evaluating pesticide formulations as it enables the determination of multiple active substances in plant protection products. An adaptable separation technique has been developed, enabling the qualitative and quantitative analysis of clopyralid, picloram, and aminopyralid within pesticide formulations in line with SANCO/3030/99 rev. 5 guidelines. This article offers an insight into the validation procedure encompassing key aspects such as selectivity, linearity, accuracy, precision, and recovery...
March 8, 2024: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://read.qxmd.com/read/38450376/intravascular-lithotripsy-ivl-enabled-the-percutaneous-closure-of-a-severely-calcified-paravalvular-leak-regurgitation-following-implantation-of-a-self-expandable-transcatheter-aortic-valve-a-case-report
#31
Salvatore Evola, Alessandro D'Agostino, Daniele Adorno, Oreste Fabio Triolo, Gioacchino Giarratana, Sebastiano Castrovinci, Vincenzo Argano, Eustaquio Maria Onorato
BACKGROUND: Closure of paravalvular leak (PVL) regurgitation after self-expandable (SE) transcatheter aortic valve implantation (TAVI) may be more challenging than after balloon-expandable (BE) valve implantation. CASE SUMMARY: An 85-year-old woman suffering from long-standing atrial fibrillation and severe symptomatic aortic stenosis underwent SE TAVI (26 mm Evolut™ R®, Medtronic Inc., MN, USA). A total of eighteen months after TAVI she was admitted for congestive heart failure and two-dimensional (2D) transesophageal echocardiography (TEE) color Doppler showed moderate-severe PVL regurgitation due to a long and heavily calcified leak located below the left coronary sinus...
2024: Frontiers in Cardiovascular Medicine
https://read.qxmd.com/read/38437192/impact-of-monocular-retinal-lesions-on-blob-size-in-adult-human-v1
#32
JOURNAL ARTICLE
Marco Marcondes, Mariana F Farias, Luis F Pary, Mario Fiorani, Bruss Lima, Ana Karla J Amorim, Ricardo Gattass
We studied the attributes of cytochrome c oxidase (CytOx)-rich blobs and ocular dominance columns (OD) in human V1 associated with monocular retinal lesions. Interblob distance, blob cross-sectional area, OD width, and OD arrangement pattern were analyzed in CytOx-reacted tangential sections of flat-mounted V1 preparations. Monocular deprivation induces differential expression of CytOx in the corresponding ODs in V1. We were thereby able to identify the V1 regions associated with the lesioned area in the retina, assign which OD was associated with each eye, and assign the corresponding blob in Layer III as deprived or nondeprived of visual input...
March 3, 2024: Journal of Cognitive Neuroscience
https://read.qxmd.com/read/38424364/development-of-a-core-outcome-set-for-breast-cancer-related-lymphedema-a-delphi-study
#33
JOURNAL ARTICLE
David Doubblestein, Linda Koehler, Elizabeth Anderson, Nicole Scheiman, Paula Stewart, Mark Schaverien, Jane Armer
PURPOSE: For breast cancer survivors (BCS) living with breast cancer-related lymphedema (BCRL), what outcome domains (OD) should be measured to assess the burden of the disease and efficacy of interventions? A Core Outcome Set (COS) that promotes standardized measurement of outcomes within the constraints of time influenced by work environments is essential for patients and the multidisciplinary professionals that manage and research BCRL. METHODS: Using Delphi methodology, a multidisciplinary group of BCRL experts (physical and occupational therapists, physicians, researchers, physical therapist assistants, nurses, and massage therapist) completed two waves of online surveys...
February 29, 2024: Breast Cancer Research and Treatment
https://read.qxmd.com/read/38420842/retrospective-comparison-of-first-line-treatments-for-odontogenic-sinusitis-based-on-duration-of-symptoms
#34
JOURNAL ARTICLE
Kyung Won Kwon, Jang Wook Gwak, Yoo-Sam Chung
OBJECTIVES: To investigate the clinical efficacy of dental treatment and endoscopic sinus surgery (ESS), each primary/combined treatment modality, in patients with odontogenic sinusitis (ODS), according to its phase, acute or chronic. MATERIALS AND METHODS: We retrospectively reviewed clinical data on 172 patients diagnosed with ODS. They were divided into two groups: acute (≤ 3 months; 90 patients) and chronic (> 3 months; 82 patients) ODS. The success rate and time to resolution of each primary/combined treatment modality were compared between the two groups...
February 29, 2024: Acta Otorhinolaryngologica Italica
https://read.qxmd.com/read/38406817/effect-of-high-dose-polymeric-nanoparticle-micellar-paclitaxel-on-improved-progression-free-survival-in-patients-with-optimally-resected-stage-iii-or-iv-high-grade-carcinoma-of-the-ovary-a-prospective-cohort-study-with-historical-controls
#35
JOURNAL ARTICLE
Soo Jin Park, Joo-Hyuk Son, Tae-Wook Kong, Suk-Joon Chang, Hee Seung Kim
INTRODUCTION: We evaluated the effect of high-dose polymeric nanoparticle micellar paclitaxel (PM-Pac) on survival in patients with stage III-IV high-grade serous ovarian cancer (HGSC) who underwent upfront surgery. METHODS: We prospectively recruited the patients who received PM-Pac (280 mg/m2 ) and carboplatin at an area under the curve (AUC) of 5 (cohort 1) in two tertiary centers between October 2015 and June 2019. As historical controls, we retrospectively collected data on those who received paclitaxel (175 mg/m2 ) and carboplatin (AUC 5; cohort 2) or paclitaxel (175 mg/m2 ), carboplatin (AUC 5) and bevacizumab (15 mg/kg; cohort 3)...
2024: Frontiers in Oncology
https://read.qxmd.com/read/38396371/comparative-analysis-of-osteoderms-across-the-lizard-body
#36
JOURNAL ARTICLE
Anastasiia Maliuk, Arsalan Marghoub, Catherine J A Williams, Edward Stanley, Loïc Kéver, Matthew Vickaryous, Anthony Herrel, Susan E Evans, Mehran Moazen
Osteoderms (ODs) are mineralized tissue embedded within the skin and are particularly common in reptiles. They are generally thought to form a protective layer between the soft tissues of the animal and potential external threats, although other functions have been proposed. The aim of this study was to characterize OD variation across the lizard body. Adults of three lizard species were chosen for this study. After whole body CT scanning of each lizard, single ODs were extracted from 10 different anatomical regions, CT scanned, and characterized using sectioning and nanoindentation...
February 23, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38395933/preoperative-serum-level-of-ca153-and-a-new-model-to-predict-the-sub-optimal-primary-debulking-surgery-in-patients-with-advanced-epithelial-ovarian-cancer
#37
JOURNAL ARTICLE
Yue Jia, Yaping Jiang, Xiaoqi Fan, Ya Zhang, Kun Li, Haohan Wang, Xianling Ning, Xielan Yang
OBJECTIVE: The aim of this study was to establish a preoperative model to predict the outcome of primary debulking surgery (PDS) for advanced ovarian cancer (AOC) patients by combing Suidan predictive model with HE4, CA125, CA153 and ROMA index. METHODS: 76 AOC Patients in revised 2014 International Federation of Gynecology and Obstetrics (FIGO) stage III-IV who underwent PDS between 2017 and 2019 from Yunnan Cancer Hospital were included. Clinical data including the levels of preoperative serum HE4, CA125, CA153 and mid-lower abdominal CT-enhanced scan results were collected...
February 23, 2024: World Journal of Surgical Oncology
https://read.qxmd.com/read/38392737/sub-diffraction-readout-method-of-high-capacity-optical-data-storage-based-on-polarization-modulation
#38
JOURNAL ARTICLE
Li Zhang, Wenwen Li, Zhongyang Wang
The big data era demands an efficient and permanent data storage technology with the capacity of PB to EB scale. Optical data storage (ODS) offers a good candidate for long-lifetime storage, as the developing far-field super-resolution nanoscale writing technology improves its capacity to the PB scale. However, methods to efficiently read out this intensive ODS data are still lacking. In this paper, we demonstrate a sub-diffraction readout method based on polarization modulation, which experimentally achieves the sub-diffraction readout on Disperse Red 13 thin film with a resolution of 500 nm, exceeding the diffraction limit by 1...
February 16, 2024: Nanomaterials
https://read.qxmd.com/read/38391906/integrated-analysis-of-single-cell-and-bulk-rna-sequencing-data-reveals-memory-like-nk-cell-subset-associated-with-mycobacterium-tuberculosis-latency
#39
JOURNAL ARTICLE
Mojtaba Shekarkar Azgomi, Giusto Davide Badami, Marianna Lo Pizzo, Bartolo Tamburini, Costanza Dieli, Marco Pio La Manna, Francesco Dieli, Nadia Caccamo
Natural killer (NK) cells are innate-like lymphocytes that belong to the family of type-1 innate lymphoid cells and rapidly respond to virus-infected and tumor cells. In this study, we have combined scRNA-seq data and bulk RNA-seq data to define the phenotypic and molecular characteristics of peripheral blood NK cells. While the role of NK cells in immune surveillance against virus infections and tumors has been well established, their contribution to protective responses to other intracellular microorganisms, such as Mycobacterium tuberculosis (Mtb), is still poorly understood...
February 6, 2024: Cells
https://read.qxmd.com/read/38384610/extra-pontine-myelinolysis-after-rapid-correction-of-hyponatremia-responding-to-levodopa
#40
Jagannath Dhadwad, Anish Chitnis
Osmotic demyelinating disease of the central nervous system has two variants: central pontine myelinolysis and extra-pontine myelinolysis (EPM). Up to 10% of cases of osmotic demyelination syndrome are associated with EPM, which mostly affects the thalamus and basal ganglia. It is commonly associated with the rapid correction of hyponatremia. An elderly woman in her 60s presented with complaints of acute gastroenteritis and giddiness and visited the emergency ward. On examination, she was conscious and oriented to time but disoriented to place and person and had slurring of speech with signs of dehydration...
January 2024: Curēus
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