Publications by authors named "Wei Wei Yang"

Utilizing enzymes as biocatalysts, an alternative strategy has been developed for the highly enantioselective synthesis of chiral 2,3-dihydrobenzofuran (2,3-DHB) esters via the dynamic kinetic resolution of 2,3-dihydro-3-benzofuranols, which are generated from an intramolecular Aldol reaction. This protocol provides easy access to a series of 2,3-DHB ester derivatives, prodrugs, and allows for functional group transformations. Biological evaluation also indicates that some of the products exhibit potent anti-inflammatory activity.

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Background: Observational studies have shown that individual sleep traits habits are potential risk factors for major depression. However, it is not known whether there is a causal relationship between individual sleep traits habits such as continuous sleep duration, short sleep duration, short sleep duration, insomnia, nap during the day, snoring, and major depression. In this study, Mendelian randomization (MR) was used to predict major depressive disorder (MDD) in individuals sleep traits habits.

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Article Synopsis
  • Tandem amplification of carbapenemase genes increases their copies, leading to stronger resistance to carbapenem antibiotics, particularly in heterogenous and temporary ways.
  • A specific case was studied involving the amplification of the oxaAb gene in the Acinetobacter baumannii bacteria, which is surrounded by ISAba1 elements, resulting in significant overproduction of the enzyme.
  • The research showed that while the number of gene repeats decreased with the withdrawal of carbapenems, re-exposure to the antibiotic caused a rapid resurgence in the repeat numbers, demonstrating a dynamic response that enhances carbapenem resistance.
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Background: Hypertensive cerebral hemorrhage (HCH), the most common chronic diseases, has become a topic of global public health discussions.

Aim: To investigate the role of rehabilitative nursing interventions in optimizing the postoperative mental status recovery phase and to provide clinical value for future rehabilitation of patients with HCH.

Methods: This randomized controlled study included 120 patients with cerebral HCH who were contained to our neurosurgery department between May 2021-May 2023 as the participants.

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Objective: This study aims to evaluate the diagnostic performance of quantitative shear wave elastography (SWE) and a new qualitative color pattern SWE for the differentiation of benign and malignant American College of Radiology Thyroid Imaging, Reporting, and Data System (ACR TI-RADS) 4 or 5 category thyroid nodules measuring ≤10 mm.

Materials And Methods: From May 2020 to July 2022, a total of 237 patients with 270 thyroid nodules were enrolled, and conventional ultrasound and SWE examinations were performed for each patient. Each ACR TI-RADS 4 or 5 category thyroid nodule measuring ≤10 mm was evaluated by quantitative SWE and a new qualitative color pattern SWE.

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DNA nanostructure provides powerful tools for DNA demethylase activity detection, but its stability has been significantly challenged. By virtue of circular DNA with resistance to exonuclease degradation, herein, the circular DNAzyme duplex with artificial methylated modification was constructed to identify the target and output the DNA activators to drive the CRISPR/Cas12a, constructing an "on-off-on" electrochemiluminescence (ECL) biosensor for monitoring the activity of the O-methylguanine-DNA methyltransferase (MGMT). Specifically, the circular DNAzyme duplex consisted of the chimeric RNA-DNA substrate ring with double activator sequences and two single-stranded DNAzymes, whose catalytic domains were premodified with the methyl groups.

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Background And Objective: Loneliness is detrimental to mental health, with university students at higher risk of feeling lonely than other population groups. The mental health of college students is a hot topic at present. Despite numerous studies exploring interventions for loneliness among university students.

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Epithelial-to-mesenchymal transition (EMT) is associated with an invasive phenotype in colorectal cancer (CRC). Here, we examined the roles of YES-associated protein (YAP) and syndecan-2 (SDC2) in EMT-related progression, invasion, metastasis, and drug resistance in CRC. The expression levels of YAP and SDC2 in CRC patient tumor tissue were quantified by PCR and western blotting.

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When non-magnetic impurity immerses in Fermi sea, a regular modulation of charge density around impurity will appear and such phenomena is called Friedel oscillation (FO). Although both Luttinger liquid and Landau Fermi liquid show such characteristic oscillation, FO in generic non-Fermi liquid (NFL) phase is still largely unknown. Here, we show that FO indeed exists in NFL state of an exactly solvable model, i.

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Background: Toxin-antitoxin systems are highly variable, even among strains of the same bacterial species. The MazEF toxin-antitoxin system is found in many bacteria and plays important roles in various biological processes such as antibiotic tolerance and phage defense. However, no interplay of MazEF systems between different species was reported.

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Doxorubicin is a common chemotherapeutic agent in clinic, but myocardial toxicity limits its use. Fibroblast growth factor (FGF) 10, a multifunctional paracrine growth factor, plays diverse roles in embryonic and postnatal heart development as well as in cardiac regeneration and repair. In this study we investigated the role of FGF10 as a potential modulator of doxorubicin-induced cardiac cytotoxicity and the underlying molecular mechanisms.

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This study comprehensively assessed the effect of enhanced recovery after surgery (ERAS) on wound infection and postoperative complications in patients undergoing liver surgery. The PubMed, EMBASE, MEDLINE, Cochrane Library, China National Knowledge Infrastructure (CNKI), VIP, and Wanfang electronic databases were searched to collect published studies on the use of ERAS in liver surgery until December 2022. Literature selection was performed independently by two investigators according to the inclusion and exclusion criteria, and quality evaluation and data extraction were performed.

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Objective: To determine the feasibility of a flexible visitation system in the intensive care unit (ICU).

Methods: A randomized, open-label, parallel group clinical trial was conducted. All patients admitted to the ICU of the Lanzhou University Second Hospital from April to June 2022 were enrolled.

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Benzyl bromides have been widely used for fullerene functionalization. However, the use of benzyl chlorides, a more affordable but less reactive counterpart of benzyl bromides, has been rarely reported. Herein, a new metal-mediated benzylation of C with benzyl chlorides is presented.

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Article Synopsis
  • In 2021, the hospice and palliative care team at Peking Union Medical College Hospital created a training platform to educate volunteers on core concepts of hospice and palliative care for the general public.
  • The article evaluates the platform's training design, content, methods, and outcomes, confirming its theoretical foundation, logical structure, effective volunteer training methods, and positive results.
  • Future efforts should focus on enhancing the platform's performance and establishing strategies for its long-term development.
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Background: Lung transplantation is an effective treatment for saving the lives of patients with end-stage lung disease (ESLD). Lung transplant-related morbidity and mortality has significantly higher than other solid organ transplants. Among the pre-transplant variables that affect the survival rate after transplantation, nutritional status are associated with poor survival rate.

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Objective: To investigate the status quo of satisfaction with postgraduate education of clinical medicine and the influencing factors, so as to provide references for promoting improvements in the education model and the program quality of medical personnel training.

Methods: A self-developed Clinical Medicine Postgraduate Program Quality Satisfaction Questionnaire was used to conduct a survey among 1907 postgraduate students of clinical medicine, and multivariate linear regression was used to analyze the influencing factors of postgraduate students' satisfaction with the quality of the program.

Results: The overall satisfaction rate with the quality of the postgraduate clinical medical program was 81.

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Egfr, a member of the ErbB gene family, plays a critical role in tissue development and homeostasis, wound healing, and disease. However, expression and regulators of Egfr during spinal cord development remain poorly understood. In this study, we investigated ErbB evolution and analyzed co-expression modules, miRNAs, and transcription factors that may regulate Egfr expression in rats.

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Reported here is a new [CuI] cluster-based coordination polymer, namely [CuI(bib)]·n(DMF) (1, bib = 1,4-bis(imidazolyl)butane, DMF = N,N'-dimethylformamide), which was synthesized by the self-assemble reaction of CuI, bib and KI under solvothermal conditions. Remarkably, compound 1 shows promising photocatalytic performance toward to the degradation of MB solution under visible light irradiation. For the COPD treatment, the ELISA detection kit was conducted to determine the content of INF-γ released by the respiratory tract mucosal epithelial cells.

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Immunocytes-involved inflammation is considered to modulate the damage in various diseases. Oxidative stress is initiated by oxidative agents such as LPS and ROS, which are strongly involved in chronic inflammation. Our previous study found that a polysaccharide fraction from Craterellus cornucopioides (CCPP-1) showed good antioxidant activity.

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The reactions of C with acetone were carried out under basic condition in the presence of 1.0 M TBAOH (tetra--butylammonium hydroxide) methanol solution and ArCHBr (Ar = Ph or -BrPh), where methano[60]fulleroids with a novel 1,1,4,9,9,25-configuration were obtained and structurally characterized by single crystal diffraction. The product was formed via the ring-opening reaction of the [5,6]-cyclopropane by the nucleophilic addition of MeO, which is different from the reactions of other ketones reported previously.

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Background: Internal rectal prolapse (IRP) is one of the most common causes of obstructive constipation. The incidence of IRP in women is approximately three times that in men. IRP is mainly treated by surgery, which can be divided into two categories: Abdominal procedures and perineal procedures.

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In the field of remote sensing image processing, the classification of hyperspectral image (HSI) is a hot topic. There are two main problems lead to the classification accuracy unsatisfactory. One problem is that the recent research on HSI classification is based on spectral features, the relationship between different pixels has been ignored; the other is that the HSI data does not contain or only contain a small amount of labeled data, so it is impossible to build a well classification model.

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Pain is a source of substantial discomfort. Abnormal activity in both the zona incerta (ZI) and posterior complex of the thalamus (Po) are implicated in neuropathic pain, but their exact roles remain unclear. In particular, the precise cell types and molecular mechanisms of the ZI-Po circuit that regulate nociception are largely uncharacterized.

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The widespread existence of polychlorinated biphenyls (PCB) in wastewater results in the retention of abundant PCB in waste activated sludge (WAS), which has become a global concern. Till now, the effects of PCB on methane production during WAS anaerobic digestion was still limited. This study aimed to investigate whether and how PCB affects methane production.

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