Publications by authors named "Chu Lei"

The maintenance of genomic integrity in rapidly proliferating cells is a substantial challenge during embryonic development. Although numerous cell-intrinsic mechanisms have been revealed, little is known about genome-protective effects and influences of developmental tissue microenvironments on tissue-forming cells. Here we show that fetal liver hepatocytes provide protection to haematopoietic stem and progenitor cell (HSPC) genomes.

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Implant-associated Staphylococcus aureus (S. aureus) osteomyelitis (IASO) leads to high orthopedic implant failure rates due to the formation of Staphylococcal abscess community within the bone marrow and bacterial colonization in the osteocyte lacuno-canalicular network (OLCN). To address this, antimicrobial peptides (HHC36)-loaded titania nanotubes (NTs) are developed on titanium screws (Ti-NTs-P-A), which integrate pH-responsive polymethacrylic acid to control HHC36 release for eradicating bacteria in IASO.

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Bone infection is a catastrophe in clinical orthopedics. Despite being the standard therapy for osteomyelitis, antibiotic-loaded polymethyl methacrylate (PMMA) cement has low efficiency against bacteria in biofilms. Furthermore, high-dose antibiotic-loaded implants carry risks of bacterial resistance, tissue toxicity, and impairment of local tissue healing.

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Brain development is characterized by an increase in structural and functional segregation, which supports the specialization of cognitive processes within the context of network neuroscience. In this study, we investigated age-related changes in morphological segregation using individual Regional Radiomics Similarity Networks (R2SNs) constructed with a longitudinal dataset of 494 T1-weighted MR scans from 309 typically developing children aged 6.2 to 13 years at baseline.

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Article Synopsis
  • The text discusses the challenges in developing effective appearance models for visual object tracking, particularly within the current Siamese-based methods, which often struggle to distinguish between target and non-target objects.
  • It introduces a new tracking framework called Single-Branch Tracking (SBT), inspired by transformer networks, that enhances feature extraction by embedding cross-image correlations at multiple layers, resulting in a more targeted approach.
  • An improved version, SuperSBT, adopts a hierarchical architecture and includes techniques like masked image modeling and temporal modeling, leading to better performance and increased tracking speed, significantly outperforming the original SBT in various benchmark tests.
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The assessment of biodegradable materials, such as bioactive glass, under the existing ISO 10993 standard test methods poses a significant challenge due to potential cell viability impairment caused by the accumulation of degraded products in a static environment. Therefore, innovative methodologies are urgently needed to tailor the unique biodegradation characteristics of these materials, providing more precise and scientific insights into biosafety and efficacy verification. Motivation by its bidirectional regulation of angiogenesis and immunity, zinc (Zn) was incorporated into sol-gel-derived borosilicate bioactive glasses (SBSGs) to fabricate Zn-incorporated borosilicate bioactive glasses (SBSG-Zn) to complement the tissue repair capabilities of bioactive glasses.

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Crossovers create genetic diversity and are required for equal chromosome segregation during meiosis. Crossover number and distribution are highly regulated by different mechanisms that are not yet fully understood, including crossover interference. The chromosome axis is crucial for crossover formation.

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Implant-associated () osteomyelitis is a severe challenge in orthopedics. While antibiotic-loaded bone cement is a standardized therapeutic approach for osteomyelitis, it falls short in eradicating Staphylococcus abscess communities (SACs) and bacteria within osteocyte-lacuna canalicular network (OLCN) and repairing bone defects. To address limitations, we developed a borosilicate bioactive glass (BSG) combined with ferroferric oxide (FeO) magnetic scaffold to enhance antibacterial efficacy and bone repair capabilities.

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  • This study investigates a new, minimally invasive technique for implanting spinal cord stimulation (SCS) paddle leads using a biportal endoscope and shares early clinical results.
  • Six patients underwent the procedure from February 2022 to December 2023, showing low blood loss (30 mL on average) and a reasonably quick operative time (87.5 minutes).
  • Results indicated significant pain reduction post-surgery, with most patients experiencing minimal complications, and the technique demonstrates promise for safely implementing SCS systems.
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  • The study addresses the difficulties in repairing osteoporotic bone defects caused by high reactive oxygen species (ROS), inflammation, and the imbalance of bone formation and resorption.
  • Researchers developed an injectable magnesium@polyethylene glycol-poly(lactic-co-glycolic acid) hydrogel (Mg@PEG-PLGA) that can adapt shape, fill irregular defects, and transform into a supportive scaffold while releasing hydrogen and magnesium ions.
  • The hydrogel showed significant promise in animal tests, reducing ROS and inflammation, promoting bone formation, and inhibiting bone resorption, suggesting it could be a viable implant option for treating osteoporotic bone issues.
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Background: In our clinical practice, we observed that some osteoporotic vertebral compression fracture patients undergoing vertebral augmentation exhibited pain in the iliac crest region. This pain aligned with the diagnostic criteria for superior cluneal neuralgia (SCN) and affected treatment satisfaction.

Objective: This study aims to clinically observe patients undergoing vertebral augmentation in a hospital setting and analyze the etiology and risk factors associated with SCN.

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Objetive: This study aims to introduce the unilateral biplanar screw-rod fixation (UBSF) technique (a hybrid fixation technique: 2 sets of atlantoaxial screws were placed on the same side), which serves as a salvage method for traditional posterior atlantoaxial fixation. To summarize the indications of this technique and to assess its safety, feasibility, and clinical effectiveness in the treatment of odontoid fractures.

Methods: Patients with odontoid fractures were enrolled according to special criteria.

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This paper constructs a two-layer road data asset revenue allocation model based on a modified Shapley value approach. The first layer allocates revenue to three roles in the data value realization process: the original data collectors, the data processors, and the data product producers. It fully considers and appropriately adjusts the revenue allocation to each role based on data risk factors.

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The cytosolic DNA sensor cyclic GMP-AMP synthase (cGAS) is essential to elicit type I interferon cascade response; thus, the activity of cGAS must be strictly regulated to boost the antiviral innate immunity. Here, we report that cGAS is responsible for the DNA-induced ISG15 conjugation system. The E3 HERC5 catalyzes the ISGylation of cytoplasmic cGAS at lysine 21, 187, 219, and 458, whereas Ubl carboxy-terminal hydrolase 18 removes the ISGylation of cGAS.

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Functional signals emerge from the structural network, supporting multiple cognitive processes through underlying molecular mechanism. The link between human brain structure and function is region-specific and hierarchical across the neocortex. However, the relationship between hierarchical structure-function decoupling and the manifestation of individual behavior and cognition, along with the significance of the functional systems involved, and the specific molecular mechanism underlying structure-function decoupling remain incompletely characterized.

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Ulcerative colitis (UC) is a complex inflammatory disease of colorectum that induces abnormal immune responses and severely affects the quality of life of the patients. Grape seed proanthocyanidin extract (GSPE) exerts anti-inflammatory and antioxidant functions in many inflammatory diseases. The objective of this study was to investigate the potential therapeutic effects and underlying mechanisms of GSPE in UC using a dextran sodium sulfate (DSS)-induced mouse UC model and a lipopolysaccharide (LPS)-stimulated RAW264.

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Background: Although epidural analgesia is considered the gold standard for pain relief during labor and is safe for maternity and fetus, the association between the epidural analgesia and pelvic floor disorders remains unclear. Thus we estimate the association between epidural analgesia and early postpartum urinary incontinence (UI).

Methods: A propensity score-matched retrospective cohort study was conducted at a university-affiliated hospital in Shanghai, China.

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Purpose: This study aims to evaluate the efficacy and safety of the full-endoscopic lumbar discectomy (FELD) via lateral superior articular process (LSAP) approach and full-endoscopic transforaminal discectomy (FETD) for treating far lateral lumbar disk herniation (FFLDH).

Methods: From January 2020 to June 2022, patients who were diagnosed as FLLDH underwent the FELD via LSAP approach or FETD. The operation time, estimated blood loss, length of hospital stays, and complications were recorded.

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Precise delineation of hippocampus subfields is crucial for the identification and management of various neurological and psychiatric disorders. However, segmenting these subfields automatically in routine 3T MRI is challenging due to their complex morphology and small size, as well as the limited signal contrast and resolution of the 3T images. This research proposes Syn_SegNet, an end-to-end, multitask joint deep neural network that leverages ultrahigh-field 7T MRI synthesis to improve hippocampal subfield segmentation in 3T MRI.

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Importance: Standard postpartum pelvic floor muscle training (PFMT) can effectively reduce the incidence of pelvic floor dysfunction diseases.

Objective: This study aimed to evaluate the adherence of PFMT with smartphone application reminders on women in the postpartum period.

Study Design: We conducted a randomized controlled trial.

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Background: Sacrospinous ligament fixation (SSLF) is a minimally invasive and effective procedure for the treatment of apical prolapse. Because intraoperative exposure of the sacrospinous ligament is difficult, SSLF is difficult. The aim of our article is to determine the safety and feasibility of single-port extraperitoneal laparoscopic SSLF for apical prolapse.

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Low back pain (LBP) is a prevalent health problem worldwide that affects over 80% of adults during their lifetime. Intervertebral disc degeneration (IDD) is a well-recognized leading cause of LBP. IDD is classified into five grades according to the Pfirrmann classification system.

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Background: Multiple sclerosis (MS) is an autoimmune disease for which bone marrow mesenchymal stem cells (BM-MSCs) have become one of the most promising tools for treatment. Cuprizone(CPZ) induces demyelination in the central nervous system and its use has established a demyelination sheath animal model which is particularly suitable for studying the effects of BM-MSCs on the remyelination and mood improvement of a demyelinating model mice.

Methods: 70 C57BL/6 male mice were selected and divided into 4 groups: the normal control ( = 20), chronic demyelination ( = 20), myelin repair ( = 15) and cell-treated groups ( = 15).

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Article Synopsis
  • Study found that pain improvement rates after percutaneous kyphoplasty (PKP) can be high (49%-90%), but some patients still experience ongoing back pain.
  • Objectives were to assess clinical and imaging outcomes of PKP based on whether it was done on the symptom-dominating or non-dominating side for osteoporotic vertebral compression fractures (OVCF).
  • Results showed that while both surgical approaches improved pain and disability significantly, the symptom-dominating side (Group A) had better outcomes within the first 2 months post-surgery compared to the other side.
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