3,870 results match your criteria: "College of Biomedical Engineering[Affiliation]"

An emodin-mediated multifunctional nanoplatform with augmented sonodynamic and immunoregulation for osteomyelitis therapy.

J Colloid Interface Sci

January 2025

Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032 China; Shanxi Provincial Key Laboratory for Translational Nuclear Medicine and Precision Protection, Taiyuan 030006 China. Electronic address:

Emodin (ED), as a traditional Chinese medicine, possesses a variety of biological activities and is also one of natural sonosensitizer. Whether emodin could react with titanium dioxide to enhance the sonodynamic activity for safely treating osteomyelitis remains to be explored. Hence, an ED-conjugated Mn-doped titanium dioxide (TOM) nanorod array is designed and prepared on titanium to eliminate bacterial infections under ultrasound (US) treatment.

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Underwater low-power electromagnetic transducers with Central permanent magnet integration.

J Acoust Soc Am

January 2025

College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, 310027, China.

High-efficiency electromagnetic transducers are crucial for enabling the self-sustained operation of underwater electromagnetic sound sources under power-constrained conditions as noted by Hao, Xie, and Ma [Proceedings of the 2019 Western China Acoustics Academic Conference, Guangzhou, China (November 5-9, 2019)]. This paper proposes a permanent magnet drive technology to enhance the electromechanical conversion efficiency of can-type electromagnetic transducers under low-power driving conditions. The can-type transducers consist of coils, an armature, and a cylindrical magnetic core with a central pillar, similar to the pot core proposed by Cui, Xu, Xu, and Shui [Electr.

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Focal Adhesion Regulation as a Strategy against Kidney Fibrosis.

ACS Chem Biol

January 2025

Department of Pediatric Dentistry, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, and Shandong Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong Provincial Clinical Research Center for Oral Diseases, Jinan 250012, China.

Chronic kidney fibrosis poses a significant global health challenge with effective therapeutic strategies remaining elusive. While cell-extracellular matrix (ECM) interactions are known to drive fibrosis progression, the specific role of focal adhesions (FAs) in kidney fibrosis is not fully understood. In this study, we investigated the role of FAs in kidney tubular epithelial cell fibrosis by employing precise nanogold patterning to modulate integrin distribution.

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Abnormally slow dynamics in occipital cortex of depression.

J Affect Disord

January 2025

University of Ottawa Institute of Mental Health Research, University of Ottawa, Ottawa, Canada. Electronic address:

Aim: Major depressive disorder (MDD) is characterized by altered activity in various higher-order regions like the anterior cingulate and prefrontal cortex. While some findings also show changes in lower-order sensory regions like the occipital cortex in MDD, the latter's exact neural and temporal, e.g.

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Plant-derived exosome-like nanoparticles in tissue repair and regeneration.

J Mater Chem B

January 2025

College of Biomedical Engineering, National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, China.

This article reviews plant-derived exosome-like nanoparticles (ELNs), and highlights their potential in regenerative medicine. Various extraction techniques, including ultracentrifugation and ultrafiltration, and their impact on ELN purity and yield were discussed. Characterization methods such as microscopy and particle analysis are found to play crucial roles in defining ELN properties.

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Anchoring of Probiotic-Membrane Vesicles in Hydrogels Facilitates Wound Vascularization.

ACS Nano

January 2025

National Engineering Research Center for Biomaterials, Sichuan University, 29 Wangjiang Road, Chengdu, Sichuan 610064, P. R. China.

Inadequate vascularization significantly hampers wound recovery by limiting nutrient delivery. To address this challenge, we extracted membrane vesicles from (LMVs) and identified their angiogenic potential via transcriptomic analysis. We further developed a composite hydrogel system (Gel-LMVs) by anchoring LMVs within carboxylated chitosan and cross-linking it with oxidized hyaluronic acid through a Schiff base reaction.

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Aims: Clear cell renal cell carcinoma (ccRCC) shows considerable variation within and between tumors, presents varying treatment responses among patients, possibly due to molecular distinctions. This study utilized a multi-center and multi-omics analysis to establish and validate a prognosis and treatment vulnerability signature (PTVS) capable of effectively predicting patient prognosis and drug responsiveness.

Materials And Methods: To address this complexity, we constructed an integrative multi-omics analysis using 10 clustering algorithms on ccRCC patient data.

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Background: Otitis media with effusion (OME) is associated with comorbidities such as allergic rhinitis, gastroesophageal reflux disease, asthma, and more. Many of these comorbidities can be caused by type 2 inflammation (T2I). This study aims to determine the risk of undergoing OME surgery in patients with and without T2I disease.

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High-intensity focused ultrasound thermal ablation (HIFU) is a novel non-invasive technique in the treatment of liver metastases (LIM) that allows focal destruction and is not affected by dose limits. This retrospective study aimed to explore the efficacy of HIFU in improving survival and the safety of the method in newly diagnosed patients with cancer with LIM who received first-line immune checkpoint inhibitor (ICI) therapy. Between January 2018 and December 2023, data from 438 newly diagnosed patients with cancer and LIM who were treated at Mianyang Central Hospital (Mianyang, China) were reviewed.

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Long-term blood glucose control via glucose-activated transcriptional regulation of insulin analogue in type 1 diabetes mice.

Diabetes Obes Metab

January 2025

National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, People's Republic of China.

Aim: To achieve glucose-activated transcriptional regulation of insulin analogue in skeletal muscle of T1D mice, thereby controlling blood glucose levels and preventing or mitigating diabetes-related complications.

Materials And Methods: We developed the GANIT (Glucose-Activated NFAT-regulated INSA-F Transcription) system, an innovative platform building upon the previously established intramuscular plasmid DNA (pDNA) delivery and expression system. In the GANIT system, skeletal muscle cells are genetically engineered to endogenously produce the insulin analogue INSA-F (Insulin Aspart with Furin cleavage sites).

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Ultrasmall iron-gallic acid coordination polymer nanoparticles for scavenging ROS and suppressing inflammation in tauopathy-induced Alzheimer's disease.

Biomaterials

December 2024

Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Institute of Nuclear Medicine and Molecular Imaging of Zhejiang University, Hangzhou, China; Key Laboratory of Medical Molecular Imaging of Zhejiang Province, Hangzhou, China; Key Laboratory for Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, China. Electronic address:

Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder globally, with no effective treatment available yet. A crucial pathological hallmark of AD is the accumulation of hyperphosphorylated tau protein, which is deteriorated by reactive oxygen species (ROS) and neuroinflammation in AD progression. Thus, alleviation of ROS and inflammation has become a potential therapeutic strategy in many studies.

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Coronary artery calcification (CAC) is a key marker of coronary artery disease (CAD) but is often underreported in cancer patients undergoing non-gated CT or PET/CT scans. Traditional CAC assessment requires gated CT scans, leading to increased radiation exposure and the need for specialized personnel. This study aims to develop an artificial intelligence (AI) method to automatically detect CAC from non-gated, freely-breathing, low-dose CT images obtained from positron emission tomography/computed tomography scans.

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Synchronous Interference of Dual Metabolic Pathways Mediated by HS Gas/GOx for Augmenting Tumor Microwave Thermal Therapy.

ACS Appl Mater Interfaces

January 2025

Key Laboratory of Cryogenics Science and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Laboratory of Controllable Preparation and Application of Nanomaterials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

Sublethal tumor cells have an urgent need for energy, making it common for them to switch metabolic phenotypes between glycolysis and oxidative phosphorylation (OXPHOS) for compensatory energy supply; thus, the synchronous interference of dual metabolic pathways for limiting energy level is essential in inhibiting sublethal tumor growth. Herein, a multifunctional nanoplatform of Co-MOF-loaded anethole trithione (ADT) and myristyl alcohol (MA), modified with GOx and hyaluronic acid (HA) was developed, namely, CAMGH. It could synchronously interfere with dual metabolic pathways including glycolysis and OXPHOS to restrict the adenosine triphosphate (ATP) supply, achieving the inhibition to sublethal tumors after microwave (MW) thermal therapy.

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This study investigates the development of epoxy-resin composites reinforced with coral-derived calcium carbonate (CaCO) fillers for enhanced radiation shielding and mechanical properties. Leveraging the high calcium content and density of coral, composites were prepared with filler weight fractions of 0%, 25%, and 50%. SEM and EDS analyses revealed that higher filler concentrations (50%) increased particle agglomeration, affecting matrix uniformity.

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Purpose: To systematically review the literature and perform a meta-analysis of PET radiomics for histologic subtype classification in non-small cell lung cancer (NSCLC).

Methods: PubMed, Embase, Scopus, and Web of Science databases were systematically searched in English on human subjects for studies on distinguishing adenocarcinoma (ADC) from squamous cell carcinoma (SCC) using PET radiomics published from inception until November 2024. The Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS-2) tool and the Radiomics Quality Score (RQS) were utilized to assess the methodological quality of the included studies.

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Biological carriers have emerged as significant tools to deliver radionuclides in nuclear medicine, providing a meaningful perspective for tumor imaging and treatment. Various radionuclide-labeled biological carriers have been developed to meet the needs of biomedical applications. This review introduces the principles of radionuclide-mediated imaging and therapy and the selected criteria of them, as well as a comprehensive description of the characteristics and functions of representative biological carriers including bacteria, cells, viruses, and their biological derivatives, emphasizing the labeled strategies of biological carriers combined with radionuclides.

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Photoelectrochemical sensors have been studied for glucose detection because of their ability to minimize background noise and unwanted reactions. Titanium dioxide (TiO), a highly efficient material in converting light into electricity, cannot utilize visible light. In this regard, we developed a nonenzymatic glucose sensor by using a simple one-step electrospinning technique to combine cupric oxide with TiO to create a heterojunction.

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PET molecular imaging-based prevention for brain aging.

Eur J Nucl Med Mol Imaging

January 2025

Department of Nuclear Medicine and PET Center, The Second Affiliated Hospital of Zhejiang, University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China.

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Introduction: TWe investigated impacts of particulate matter with an aerodynamic diameter of less than 2.5 μm (PM), relative humidity (RH), and temperature on sleep stages and arousal.

Materials And Methods: A cross-sectional analysis involving 8,611 participants was conducted at a sleep center in Taipei.

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An injectable in situ-forming hydrogel with self-activating genipin-chitosan (GpCS) cross-linking and an O/Ca self-supplying capability for wound healing and rapid hemostasis.

Carbohydr Polym

March 2025

Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan; International Ph.D. Program in Cell Therapy and Regenerative Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; Graduate Institute of Nanomedicine and Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan. Electronic address:

Severe traumatic bleeding and chronic diabetic wounds require rapid hemostasis and multifunctional dressings, which remain particularly challenging, especially for non-compressible trauma and irregular wounds with dysregulated microenvironments. Chitosan (CS) can be easily cross-linked with genipin to form GpCS hydrogels. However, developing injectable GpCS hydrogels for biomedical applications faces challenges, particularly in enhancing rapid gel formation and optimizing physical properties.

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Objectives: To investigate uterine fibroid (UF)-associated imaging changes, and their prevalence, incidence and potential risk factors in the Chinese population.

Design: This was a retrospective observational study using health examination data.

Setting: A physical examination centre in Nanchong, China, between October 2017 and December 2020.

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Enhancing Antituberculosis Treatment Nanoparticles Encapsulated with Catalase and Levofloxacin Under Ultrasound Stimulation: A 3D Spheroid Study.

Mol Pharm

January 2025

State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing 400016, China.

Tuberculosis (TB) is a chronic infectious disease caused by (MTB). Tuberculous granuloma is the central and key pathological structure of tuberculosis and is characterized by tissue hypoxia and ineffective drug delivery. To address these issues, this study fabricated a composite nanoparticle loaded with catalase (CAT) and levofloxacin (LEV) (CAT@LEV-NPs) and then combined it with ultrasound (US) to investigate the bactericidal effect and underlying mechanisms using TB spheroids.

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Advances in Research of Hydrogel Microneedle-Based Delivery Systems for Disease Treatment.

Pharmaceutics

December 2024

National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610065, China.

Microneedles (MNs), composed of multiple micron-scale needle-like structures attached to a base, offer a minimally invasive approach for transdermal drug delivery by penetrating the stratum corneum and delivering therapeutic agents directly to the epidermis or dermis. Hydrogel microneedles (HMNs) stand out among various MN types due to their excellent biocompatibility, high drug-loading capacity, and tunable drug-release properties. This review systematically examines the matrix materials and fabrication methods of HMN systems, highlighting advancements in natural and synthetic polymers, and explores their applications in treating conditions such as wound healing, hair loss, cardiovascular diseases, and cancer.

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