Publications by authors named "Guofeng Li"

Radiation enteritis (RE) is one of the major side effects of radiotherapy. So far, there are no effective drugs for preventing the disease process. Icariside II (ICS II) is a highly efficient monomer compound extracted and purified from the classic Chinese medicinal herb Epimedium.

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Introduction: Duchenne muscular dystrophy (DMD) is an X-linked recessive genetic disorder primarily affecting cardiac and skeletal muscles, with gastrointestinal obstruction being an infrequent complication.

Case Report: We present a 17-year-old boy with DMD (G-to-T transversion at c.4150 in the gene encoding dystrophin protein) who developed severe colonic obstruction due to fecal impaction.

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Article Synopsis
  • The study explores the potential of using bacterial cellulose as a carrier for glycyrrhetinic acid, a compound known for its anti-inflammatory properties useful in treating eczema.
  • This research focuses on creating and evaluating glycyrrhizic acid hydrogels utilizing unmodified bacterial cellulose, employing methods like physical crosslinking and optimization techniques.
  • Findings indicate that the glycyrrhizic acid-bacterial cellulose hydrogel shows good skin permeability, minimal irritation, and effectively supports skin recovery from induced eczema, outperforming conventional hydrogels.
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Radio-immunotherapy has offered emerging opportunities to treat invasive melanoma due to its immunostimulatory performances to activate antitumor immune responses. However, the immunosuppressive microenvironment and insufficient response rate significantly limit the practical efficacy. This study presents an autologous cell-derived exosomes (Exo)-engineered nanoagonist (MnExo@cGAMP) containing with metalloimmunotherapeutic agent (Mn ions) and nucleotidyltransferase (2',3'-cGAMP, a STING agonist) for boosting melanoma-targeted radio-immunotherapy by cascade cGAS-STING pathway activation.

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Objective: This study evaluates the efficacy and safety of Novel Hemicraniectomy Technique (NHT) in Severe Traumatic Brain Injury (STBI) patients.

Methods: A retrospective analysis of 79 STBI patients who underwent decompressive hemicraniectomy was conducted. The study compared 25 patients treated with NHT and 54 patients treated with Classic Decompressive Craniectomy (CDC), focusing on therapeutic effects, complications, intracranial pressure, and prognosis.

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Article Synopsis
  • * In this study, various BRD4 PROTACs with modified alkenyl oxindole warheads were synthesized, and a high-throughput screening system was developed to evaluate their efficacy.
  • * The research identified a specific PROTAC that effectively degraded BRD4, achieving over 98% degradation and demonstrating potential antitumor effects, reinforcing the promise of this approach for treating cancers driven by BRD4.
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Necroptosis is a type of regulated cell death (RCD) that is triggered by changes in the extracellular or intracellular milieu that are picked up by certain death receptors. Thanks to its potent capacity to induce immunological responses and overcome apoptotic resistance, it has garnered significant attention as a potential cancer treatment. Basic information for the creation of nano-biomedical treatments is provided by studies on the mechanisms underlying tumor necroptosis.

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Introduction: There are considerable similarities between the pathophysiology of gout flare and the dysregulated inflammatory response in severe COVID-19 infection. Monocytes are the key immune cells involved in the pathogenesis of both diseases. Therefore, it is critical to elucidate the molecular basis of the function of monocytes in gout and COVID-19 in order to develop more effective therapeutic approaches.

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Purpose: Our aim is to develop and validate an MRI-based diagnostic model for predicting pathological deterioration upgrading in rectal tumor.

Methods: This retrospective study included 158 eligible patients from January 2017 to November 2023. The patients were divided into a training group (n = 110) and a validation group (n = 48).

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Background: Diabetes is a significant global health concern, with a growing prevalence in Japan. Individuals with normal body mass index who are metabolically unhealthy exhibit an elevated risk of diabetes onset. Investigating the relationship between Metabolically Unhealthy Normal-weight (MUNW) status and the risk of diabetes in non-diabetic individual is vital for implementing early preventive strategies.

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Perianal embryonal rhabdomyosarcoma (ERMS) is a rare disease with a poor prognosis. There are few reported cases of this disease, and specific clinical manifestations are lacking; therefore, making an early diagnosis before surgery is challenging. In November 2014, a 30-year-old man was admitted to Xiaoshan Affiliated Hospital of Wenzhou Medical University due to severe left perianal pain.

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Silver nanoparticles (AgNPs) have attracted widespread attention in multidrug-resistant bacterial infections. However, the application of AgNPs synthesized by conventional methods is restricted by its high costs, toxicity, and poor stability. Herein, a water-soluble polysaccharide ( polysaccharide, SBP) rich in reducing sugars was used as both the reductant and stabilizer to greenly synthesize spherical AgNPs@SBP with smaller particle sizes (11.

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Ulcerative colitis (UC) is a chronic inflammatory condition with recurrent and challenging symptoms. Effective treatments are lacking, making UC management a critical research area. Morin (MO), a flavonoid from the Moraceae family, shows potential as an anti-UC agent, but its mechanisms are not fully understood.

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Article Synopsis
  • - Multi-resistant Staphylococcus aureus (S. aureus) poses a serious global health threat, with high rates of illness and death; the enzyme coagulase (Coa) is a critical factor in its ability to cause infections.
  • - Sinigrin has been identified as an effective Coa inhibitor that can significantly impair S. aureus coagulation and disrupt its protective mechanisms, with notable effects observed at concentrations as low as 32 mg/L.
  • - In tests on mice, sinigrin combined with the antibiotic oxacillin proved more effective against S. aureus pneumonia than oxacillin alone, reducing bacterial counts and inflammation, suggesting sinigrin's potential as a complementary treatment in antimicrobial therapies. *
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Late-stage modification of peptides could potentially endow peptides with significant bioactivity and physicochemical properties, and thereby provide novel opportunities for peptide pharmaceutical studies. Since tryptophan (Trp) bears a unique indole ring residue and plays various critical functional roles in peptides, the modification methods for tryptophan were preliminarily developed with considerable progress transition-metal mediated C-H activation. Herein, we report an unprecedented tertiary amine catalyzed peptide allylation the S2'-S2' pathway between the N1 position of the indole ring of Trp and Morita-Baylis-Hillman (MBH) carbonates.

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Cluster analysis plays an indispensable role in machine learning and data mining. Learning a good data representation is crucial for clustering algorithms. Recently, deep clustering (DC), which can learn clustering-friendly representations using deep neural networks (DNNs), has been broadly applied in a wide range of clustering tasks.

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Purpose: Dietary factors play a crucial role in the development and management of chronic constipation, yet the relationship between dietary protein intake and constipation remains underexplored. This study aims to investigate the association between dietary protein intake and the prevalence of constipation among American adults, with a focus on potential gender differences, using large-scale national data.

Materials And Methods: Data from 14,048 participants aged 20 and above (7,072 men and 6,976 women) from the National Health and Nutrition Examination Survey (NHANES) 2005-2010 were analyzed.

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Alkenyl oxindoles have been characterized as autophagosome-tethering compounds (ATTECs), which can target mutant huntingtin protein (mHTT) for lysosomal degradation. In order to expand the application of alkenyl oxindoles for targeted protein degradation, we designed and synthesized a series of heterobifunctional compounds by conjugating different alkenyl oxindoles with bromodomain-containing protein 4 (BRD4) inhibitor JQ1. Through structure-activity relationship study, we successfully developed JQ1-alkenyl oxindole conjugates that potently degrade BRD4.

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Renal fibrosis is a complex pathological process that contributes to the development of chronic kidney disease due to various risk factors. Conservative treatment to curb progression without dialysis or renal transplantation is widely applicable, but its effectiveness is limited. Here, the inhibitory effect of the novel peptide DR3penA (DHα-(4-pentenyl)-AlaNPQIR-NH), which was developed by our group, on renal fibrosis was assessed in cells and mice with established fibrosis and fibrosis triggered by transforming growth factor-β1 (TGF-β1), unilateral ureteral obstruction, and repeated low-dose cisplatin.

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Bacterial infections threaten public health, and novel therapeutic strategies critically demand to be explored. Herein, poly(amino acid) (PAA)-based drug delivery nanoparticles (NPs) were designed for eliminating Methicillin resistant Staphylococcus aureus (MRSA) via tunable release of antibiotic. Using N-acryloyl amino acids (valine, valine methyl ester, aspartic acid, serine) as monomers, four kinds of amphiphilic PAAs were synthesized via photoinduced electron/energy transfer-reversible addition fragmentation chain-transfer (PET-RAFT) polymerization and were further assembled into nano-sized delivery systems.

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Cell necroptosis has presented great potential, acting as an effective approach against tumor apoptotic resistance, and it could be further enhanced via accompanying reactive oxygen species (ROS) overexpression. However, whether overproduced ROS assists the necroptotic pathway remains unclear. Thus, iron-palladium nanozyme (FePd NZ)- and shikonin (SKN)-encapsulated functional lipid nanoparticles (FPS-LNPs) were designed to investigate the ROS overexpression-enhanced SKN-induced necroptosis.

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Introduction: The objective of the study was to explore the molecular mechanism of long noncoding RNA (lncRNA) LINC00472 in Alzheimer's disease (AD) and identify potential novel targets for AD therapy.

Method: Ferroptosis-related lncRNAs were screened by GEO database. AD mouse model was constructed for in vivo experiments.

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Article Synopsis
  • * Researchers created three-dimensional nanoparticles (FA NPs) that can block these metabolic pathways, helping to disassemble biofilms.
  • * FA NPs enhance the delivery and effectiveness of a drug called sitafloxacin, successfully eliminating biofilms in mice, indicating their potential for treating bacterial infections.
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