Publications by authors named "PengYu Chen"

The acidophilic and heat-resistant characteristics of Alicyclobacillus acidoterrestris (A. acidoterrestris) pose significant challenges to fruit juice production. Traditional thermal removal methods are often ineffective against this resilient bacterium.

View Article and Find Full Text PDF

The aim of this study was to systematically analyze the differences in bioactive compounds in Ningxia Tan, Oula, and Bahan crossbred mutton, and to examine their effects on minced mutton quality. Initially, characteristic bioactive compounds in mutton were analyzed using principal component analysis. Further investigation assessed the effects of varying concentrations of glycyrrhizin flavonoids (0, 0.

View Article and Find Full Text PDF

Brain diseases are a leading cause of disability and death worldwide. Early detection can lead to earlier intervention and better outcomes for patients. In recent years, optical coherence tomography (OCT) and OCT angiography (OCTA) imaging have been widely used in stroke, traumatic brain injury (TBI), and brain cancer due to their advantages of , unlabeled, and high-resolution 3D microvessel imaging at the capillary resolution level.

View Article and Find Full Text PDF

Background: The current study aimed to examine second breast cancer (SBC) risks associated with breast-conserving surgery (BCS) and unilateral mastectomy among breast cancer (BC) survivors.

Methods: The study enrolled patients with diagnoses of stages I to III BC who underwent surgery between 2000 and 2019. Fine-Gray competing risk regression models were used to estimate the cumulative incidence of SBC and to evaluate the associations between clinical factors and SBC development.

View Article and Find Full Text PDF

The increasing incidence of structural failures, such as cracks and collapses, in rock masses within mines, tunnels, and other civil engineering environments has attracted considerable attention among scholars in recent years. Grouting serves as a principal solution to these issues. The Renlou Coal Mine in the Anhui Province is used as a case study to evaluate the effectiveness of nanosilica (NS) as an additive in ultrafine cement (UC), introducing a novel grouting material for practical applications.

View Article and Find Full Text PDF

Crustins are a family of antimicrobial peptides (AMPs) that play a pivotal role in the innate immune system of crustaceans. The discovery of novel AMPs from natural sources is crucial for expanding our current database of these peptides. Here, we identified and characterized a novel member of the crustin family, named Crus-SWD1, derived from .

View Article and Find Full Text PDF

Sum frequency generation vibrational spectroscopy was applied to study the surface hydration and protein adsorption behavior on several polymer coatings based on pyridine, imidazole, and amine side groups along with vinyl or methacrylate backbones and their corresponding zwitterionic forms with carboxybetaine or sulfobetaine side chains, prepared by initiated chemical vapor deposition (iCVD). iCVD also enables facile tuning of the cross-linking density of the polymer coatings by blending in a cross-linker during the deposition, namely, 1,3,5,7-tetramethyl-1,3,5,7-tetravinyl cyclotetrasiloxane. Our results show that both the low- and high-cross-linking density zwitterionic polymers exhibit significantly better antifouling activities compared to those of the polymers without the zwitterionic side chains.

View Article and Find Full Text PDF

Systemic lupus erythematosus (SLE) is a chronic and systemic autoimmune disease characterized by dysregulation in both innate and adaptive immunity. Polarization of macrophages into M1/M2 macrophages affects the development of lupus. Exosomes-miRNA plays a crucial role in disease progression.

View Article and Find Full Text PDF

The human microbiome, the community of microorganisms that reside on and inside the human body, is critically important for health and disease. However, it is influenced by various factors and may vary among individuals residing in distinct geographic regions. In this study, 220 samples, consisting of sterile swabs from palmar skin and oral and nasal cavities were collected from Chinese Han individuals living in Shanghai, Chifeng, Kunming, and Urumqi, representing the geographic regions of east, northeast, southwest, and northwest China.

View Article and Find Full Text PDF
Article Synopsis
  • Osteoarthritis (OA) involves the gradual breakdown of joint cartilage and could be treated by delivering functional genes to chondrocytes to alter the inflammatory environment.
  • Challenges like the dense extracellular matrix and quick clearance of nucleic acids led to the development of highly branched poly(β-amino ester)s (HPAEs), specifically HMDA-2, which demonstrated better gene delivery efficiency than existing methods.
  • In tests involving a rat model, HMDA-2 successfully delivered the FBXO6 gene, resulting in reduced inflammation, cartilage damage, and improved joint health, highlighting its potential as a treatment for OA.
View Article and Find Full Text PDF

Rationale: Ulcerative colitis (UC) is a chronic inflammatory gastrointestinal disease typically coexisting with intestinal microbiota dysbiosis, oxidative stress, and an inflammatory response. Although its underlying mechanism of action is unclear, Ma-Mu-Ran Antidiarrheal Capsules (MMRAC) have demonstrated significant therapeutic efficacy for UC.

Methods: The mechanism of action of MMRAC in the treatment of UC model was investigated by combining metabolomics, transcriptomics, and intestinal microbiota detection techniques.

View Article and Find Full Text PDF
Article Synopsis
  • 2,4-bisphenol S (2,4-BPS) is a chemical increasingly found in the environment, known for its negative effects on fish and cells, but its impact on bacteria remains understudied.
  • The study exposed Enterococcus faecalis to various concentrations of 2,4-BPS, showing it decreased bacterial growth and increased membrane permeability, along with affecting gene expression related to DNA processes.
  • At certain concentrations, 2,4-BPS inhibited biofilm formation and caused oxidative stress, altering lipid metabolism in E. faecalis, with the most significant effects observed at 5 nmol L concentration.
View Article and Find Full Text PDF
Article Synopsis
  • Aggregation of antimicrobial peptides (AMPs) can increase their effectiveness against bacteria by disrupting their cell structures, presenting a potential solution to antibiotic resistance.
  • Researchers focused on the cephalopod Octopus bimaculoides, which lacks known AMP genes, and utilized artificial intelligence to identify four aggregation-prone peptides (Oct-P1 to Oct-P4), with Oct-P2 showing a 90% reduction in bacterial viability.
  • The study revealed that Oct-P2 not only penetrates bacterial cells but also interacts with DNA, hindering gene expression, thus illustrating its promise as a template for developing new antimicrobial therapies.
View Article and Find Full Text PDF

The acidophilic and heat-resistant traits of Alicyclobacillus acidoterrestris (A. acidoterrestris) present a formidable challenge to fruit juices production safety. To address the limitations of conventional thermal sterilization, a novel bacterial capture device MPDEL has been developed.

View Article and Find Full Text PDF

The prostate glands of wild ground squirrels display enlarged volume during the breeding season and shrunk size during the nonbreeding season, which enables the wild ground squirrel to be an ideal animal model for studying the mechanisms of prostate growth and involution. To clarify the possible mechanism underlying seasonal morphological changes of the prostate in wild ground squirrels, epithelial-mesenchymal transitions (EMT) were focused, and the expression of EMT-related genes was investigated in the current study. Histological results showed that the epithelial lumen enlarged in the breeding season, and the stromal cells expanded during the non-breeding season.

View Article and Find Full Text PDF

Background: Trastuzumab-targeted therapy is currently the standard of care for advanced human epidermal growth factor receptor 2 (HER2)-positive gastric cancer. However, the emergence of resistance to trastuzumab poses significant challenges.

Aim: To identify the key genes associated with trastuzumab resistance.

View Article and Find Full Text PDF

Given the reduction of freshwater resources, saline-alkaline aquaculture has emerged as an effective approach to expand the fishery's accessible space. High carbonate alkalinity (CA) is a major stressor for aquatic organisms in saline-alkaline environments. Paramisgurnus dabryanus is a potential species for culture in saline-alkaline water, making it an ideal model for investigating the physiological responses and tolerance mechanisms to CA exposure in freshwater fishes.

View Article and Find Full Text PDF

Objective: To identify image biomarkers associated with overall life expectancy from low-dose computed tomography and integrate them as an index for assessing an individual's health.

Methods: Two categories of CT image features, body composition tissues and cardiopulmonary vasculature characteristics, were quantified from LDCT scans in the Pittsburgh Lung Screening Study cohort(n = 3,635). Cox proportional-hazards models identified significant image features which were integrated with subject demographics to predict the subject's overall hazard.

View Article and Find Full Text PDF

In systemic lupus erythematosus (SLE), neutrophil dysregulation and neutrophil extracellular traps (NETs) formation contribute to disease pathogenesis, potentially worsening the autoimmune response. Although research indicates NETs' involvement in various autoimmune conditions, their relationship with regulatory T cells (Tregs) in SLE remains elusive. In this study, in vivo experiments were involved in administering NET injections to C57BL/6 and MRL/Ipr mice.

View Article and Find Full Text PDF

Otitis media is a prevalent pediatric condition. Local delivery of antimicrobial agents to treat otitis media is hindered by the low permeability of the stratum corneum layer in the tympanic membrane. While nanozymes, often inorganic nanoparticles, have been developed to cure otitis media in an antibiotic-free manner in a chinchilla animal model, the tympanic membrane creates an impenetrable barrier that prevents the local and non-invasive delivery of nanozymes.

View Article and Find Full Text PDF

Background: A bibliometric and visual analysis of articles related to glioblastoma metabolism was conducted to reveal the dynamics of scientific development and to assist researchers in gaining a global perspective when exploring hotspots and trends.

Methods: The Web of Science Core Collection (WoSCC) was employed to search, screen, and download articles about glioblastoma metabolism published between 2014 and 2024. The relevant literature was analyzed using CiteSpace, VOSviewer and Microsoft Excel.

View Article and Find Full Text PDF

Background: Numerous diseases are associated with the interplay of mitochondrial and macrophage polarization. However, the correlation of mitochondria-related genes (MRGs) and macrophage polarization-related genes (MPRGs) with the prognosis of glioma remains unclear. This study aimed to examine this relationship based on bioinformatic analysis.

View Article and Find Full Text PDF

Protein-nanoparticle interactions play a crucial role in both biomedical applications and the biosafety assessment of nanomaterials. Here, we found that nanobodies can induce citrate-capped gold nanoparticles (AuNPs) to aggregate into large clusters. Subsequently, we explored the mechanism behind this aggregation and proposed the "gold nucleation mechanism" to explain this phenomenon.

View Article and Find Full Text PDF