A unique three-enzyme cascade mediates efficient regioselective and stereospecific epoxytetrahydrofuran ring formation in deoxyverrucosidin biosynthesis.

The fungal octaketide deoxyverrucosidin shares the same α-pyrone core with several nonaketides, including aurovertins, citreoviridin, and asteltoxin. Deoxyverrucosidin features a unique epoxytetrahydrofuran ring. In this study, we demonstrate that this ring system is formed a flavin-containing monooxygenase-mediated epoxidation on the polyene chain, followed by rearrangement with an epoxide expandase and a second epoxidation on the resulting 2,5-dihydrofuran ring with a cytochrome P450 enzyme.

The incidence and risk factors of perioperative delirium in elderly patients with hip fracture under the Unaccompanied- Care model.

Objective: This study aims to assess the incidence of postoperative delirium in elderly patients with hip fractures under the Unaccompanied- Care model and to explore its risk factors.

Methods: This retrospective observational study prospectively included elderly patients with hip fractures who were admitted to the Trauma Department of our hospital from November 2024 to May 2025, managed under the Unaccompanied-Care nursing model, and underwent surgical treatment. We retrospectively analyzed the patients' baseline data, blood indicators, and surgery-related data for data analysis.

Penaeus chinensis nearing a critical threshold of susceptibility to Decapod iridescent virus 1 (DIV1).

This study delves into the susceptibility of Chinese shrimp, Penaeus chinensis, to Decapod iridescent virus 1 (DIV1), a pathogen of significant concern in crustacean aquaculture. Our research meticulously evaluated the infection potential of DIV1 through both invasive (intramuscular injection) and non-invasive (per os) experimental methodologies. The outcomes revealed that intramuscular injection effectively induced infection in P.

Preventive aspirin use and its association with urinary incontinence in middle-aged and older adult males in the United States: a cross-sectional analysis of NHANES data.

Background: The association between preventive aspirin use and urinary incontinence (UI) among male adults remains poorly understand.

Methods: In this study, we analyzed data from the National Health and Nutrition Examination Survey (NHANES) collected in the 2011 ∼ 2018 cycle among US male adults, with aspirin use was defined as individuals self-reported use of aspirin. Multi-variable adjusted logistic regression models were used to analysis the association between aspirin use and UI.

[Physiological and Ecological Response Characteristics and Transcriptomic Change Characteristics of Rice （）Under Different Microplastic Stresses].

Traditional plastics are difficult to degrade in the environment after use and disposal, but they are prone to aging and forming microplastics （MPs）, which are emerging environmental contaminants, posing a serious threat to global ecological security and human health. To mitigate the ecological impact caused by traditional plastic products, the use of biodegradable plastics is gaining widespread attention. However, the ecological risks of biodegradable materials to the soil remain unclear.

Integrated meta-analysis, network pharmacology, computational biology, and experimental verification to reveal the anti-fatigue mechanism of .

This study aims to elucidate (LB)'s anti-fatigue mechanisms. Meta-analysis confirmed LB's anti-fatigue capacity, while network pharmacology, molecular docking, and molecular dynamics simulations identified key targets (SRC, HSP90AA1, EGFR, PRKACA, MAPK1). Furthermore, validation experiments in C2C12 cells demonstrated that LB mitigates HO-induced reactive oxygen species (ROS) accumulation and restores cell viability.

Preoperative identification of hepatocellular carcinoma from focal liver lesions ≤ 20 mm in high-risk patients using clinical and contrast-enhanced ultrasound features.

Objective: We aimed to develop and validate a prediction model to identify HCC in focal liver lesions (FLLs) ≤20 mm among patients at risk for HCC based on clinical and contrast-enhanced ultrasound (CEUS) features.

Methods: Between January 2022 and July 2023, 386 patients (mean age 58 ± 11 years; 277 male) at risk for HCC with FLLs ≤20 mm and clinical and preoperative CEUS data from three centers were retrospectively enrolled. Three prediction models based on clinical data (Cli-M), CEUS features (CEUS-M), and combined clinical and CEUS features (Com-M) were constructed using the training cohort (187 patients).

Application of artificial intelligence in medical education: A meta-ethnographic synthesis.

With the advancement of Artificial Intelligence (AI), it has had a profound impact on medical education. Understanding the advantages and issues of AI in medical education, providing guidance for educators, and overcoming challenges in the implementation process is particularly important. The objective of this study is to explore the current state of AI applications in medical education.

Higher socioeconomic status is associated with higher ultra-processed food intake: a cross-sectional analysis.

Objective: To explore the differences in ultra-processed food (UPF) consumption across different socioeconomic status (SES) levels.

Methods: Data on UPF consumption (grams/day) were derived from the 2017-2018 National Health and Nutrition Examination Survey. The analysis controlled for age, marital status, race, and sex.

Performance Assessment of GPT 4.0 on the Japanese Medical Licensing Examination.

Objective: To evaluate the accuracy and parsing ability of GPT 4.0 for Japanese medical practitioner qualification examinations in a multidimensional way to investigate its response accuracy and comprehensiveness to medical knowledge.

Methods: We evaluated the performance of the GPT 4.

Liraglutide ameliorates diabetic kidney disease by modulating gut microbiota and L-5-Oxoproline.

The gut microbiome-metabolites-kidney axis is a potential target for treating diabetic kidney disease (DKD). Our previous study found that Liraglutide attenuated DKD in rats by decreasing renal tubular ectopic lipid deposition (ELD) and serum metabolites levels, including L-5-Oxoproline (5-OP). However, the response of gut microbiome-metabolites-kidney axis to Liraglutide in DKD rats and the effect of 5-OP on ELD remain unknown.

A Novel Bacillus amyloliquefaciens Specifically Improving the Solubility and Antioxidant Activities of Edible Bird's Nest.

Edible bird's nest (EBN), a most highly priced and valuable foodstuff, contains high percentage of proteins and carbohydrates. However, proteins adhering to these carbohydrates make the EBN hard and tough, which need to be boiled as the bird's nest soup to make the Chinese cuisine. To overcome the hard and tough texture of EBN and improve the digestion degrees, the present study screened and identified a probiotic strain Bacillus amyloliquefaciens YZW02 from 5-year stored EBN sample completely solubilizing EBN for the first time.

A Retrospective Study for Labia Minora Reduction by Serrated-shaped Resection.

Background: The demand for genital plastic surgery has increased dramatically among female patients globally. Although various labia minora reduction procedures have been applied with different indications, advantages, and disadvantages, none has been universally accepted as the best method. So, we presented an innovative strategy for this increasingly demanded reconstructive procedure.

CircRNA and Stroke: New Insight of Potential Biomarkers and Therapeutic Targets.

Stroke, the second-largest cause of death and the leading cause of disability globally, presents significant challenges in terms of prognosis and treatment. Identifying reliable prognosis biomarkers and treatment targets is crucial to address these challenges. Circular RNA (circRNA) has emerged as a promising research biomarkers and therapeutic targets because of its tissue specificity and conservation.

Hematologic and lymphatic system toxicities associated with immune checkpoint inhibitors: a real-world study.

Immune checkpoint inhibitors (ICIs) exert antitumor responses in many types of cancer but may also induce serious or fatal toxicities that affect all organ systems, including the hematologic and lymphatic systems. However, the risk of hematologic and lymphatic system toxicities following different ICI treatments remains unknown. This study aimed to describe the hematologic and lymphatic system toxicities associated with different ICI regimens and the impact of combining ICIs with anti-vascular endothelial growth factor drugs using the United States Food and Drug Administration Adverse Event Reporting System pharmacovigilance database.

[Risk factors for hemorrhagic cystitis in children with β-thalassemia major after allogeneic hematopoietic stem cell transplantation].

Objectives: To explore the risk factors for hemorrhagic cystitis (HC) in children with β-thalassemia major (TM) undergoing allogeneic hematopoietic stem cell transplantation (allo-HSCT).

Methods: A retrospective analysis was conducted on clinical data of 247 children with TM who underwent allo-HSCT at Shenzhen Children's Hospital from January 2021 to November 2022. The children were divided into an HC group (91 cases) and a non-HC group (156 cases) based on whether HC occurred after operation.

A safe replication-defective Zika virus vaccine protects mice from viral infection and vertical transmission.

With the explosive emergence of Zika virus (ZIKV) and the consequent devastating fetal malformations in infected expectant women, a safe and effective vaccine is urgently needed. Here, using our established NS1 trans-complementation system, we generated high titer of replication-defective ZIKV with NS1 deletion (ZIKV-ΔNS1) in the BHK-21 cell line stably expressing NS1 (BHK). NS1 deletion of ZIKV-ΔNS1 was stably maintained as no replicative virus was found in naïve BHK-21 cells after continuous passaging of ZIKV-ΔNS1 in BHK cells.

Intranasal delivery of replicating mRNA encoding hACE2-targeting antibody against SARS-CoV-2 Omicron infection in the hamster.

The Omicron variant is sweeping the world, which displays striking immune escape potential through mutations at key antigenic sites on the spike protein, making broad-spectrum SARS-CoV-2 prevention or therapeutical strategies urgently needed. Previously, we have reported a hACE2-targeting neutralizing antibody 3E8, which could efficiently block both prototype SARS-CoV-2 and Delta variant infections in prophylactic mouse models, having the potential of broad-spectrum to prevent SARS-CoV-2. However, preparation of monoclonal neutralizing antibodies is severely limited by the time-consuming process and the relative high cost.

A new screening system for entry inhibitors based on cell-to-cell transmitted syncytia formation mediated by self-propagating hybrid VEEV-SARS-CoV-2 replicon.

The extremely high transmission rate of SARS-CoV-2 and severe cases of COVID-19 pose the two critical challenges in the battle against COVID-19. Increasing evidence has shown that the viral spike (S) protein-driven syncytia may be responsible for these two events. Intensive attention has thus been devoted to seeking S-guided syncytium inhibitors.

Six-month follow-up of functional status in discharged patients with coronavirus disease 2019.

Background: The long-term functional outcome of discharged patients with coronavirus disease 2019 (COVID-19) remains unresolved. We aimed to describe a 6-month follow-up of functional status of COVID-19 survivors.

Methods: We reviewed the data of COVID-19 patients who had been consecutively admitted to the Tumor Center of Union Hospital (Wuhan, China) between 15 February and 14 March 2020.

Does pre-existent physical inactivity have a role in the severity of COVID-19?

Background And Aims: Physical inactivity is considered an important lifestyle factor for overweight and cardiovascular disease. We aimed to investigate the association between pre-existent physical inactivity and the risk of severe coronavirus disease 2019 (COVID-19).

Methods: We included 164 (61.

Prevalence and outcomes of re-positive nucleic acid tests in discharged COVID-19 patients.

The prevalence and outcomes of patients who had re-activation of coronavirus disease 2019 (COVID-19) after discharge remain poorly understood. We included 126 consecutively confirmed cases of COVID-19 with 2-month follow-up data after discharge in this retrospective study. The upper respiratory specimen using a reverse-transcription polymerase chain reaction test of three patients (71 years [60-76]) were positive within 11-20 days after their discharge, with an event rate of 19.

MicroRNA microarray analysis to detect biomarkers of aortic dissection from paraffin-embedded tissue samples.

Objectives: The aim of this study was to explore the differential expression profiles of microRNAs (miRNAs) in paraffin-embedded acute aortic dissection (AAD) tissues to find potential biomarkers for this disease.

Methods: A total of 92 paraffin-embedded tissue specimens were collected from 92 patients with AAD who underwent surgical replacement. Among these specimens, 54 had partial normal aortic segments (smooth intima surface, non-atherosclerotic lesions) in proximal crevasse of aorta.