Publications by authors named "Duan Sun"

Distraction spinal cord injury (DSCI) is a severe complication following scoliosis correction surgery, for which there are currently no effective clinical treatments. This study aims to evaluate the inhibitory effects of rutin, a natural product, on inflammation in DSCI and to investigate the underlying mechanisms. In vitro, microglial cells were exposed directly to rutin to assess its ability to inhibit lipopolysaccharide (LPS)-induced inflammation.

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Article Synopsis
  • This study investigates the biomechanical effects of hybrid surgery (HS) combining cervical disc arthroplasty (CDA) and anterior cervical discectomy and fusion (ACDF) for revision surgery (RS) in patients with adjacent segment disease (ASD).
  • Researchers created finite element models to analyze different RS approaches and their impact on spinal mechanics, specifically examining range of motion and stress on spinal discs.
  • The findings recommend using the Bryan disc (D-C-D) for the best reduction of biomechanical responses in nearby spinal segments, while also providing insights for surgical decision-making to prevent ASD recurrence.
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Article Synopsis
  • The study explores the biomechanical aspects of different hybrid constructs used in revision surgeries (RS) after anterior cervical discectomy and fusion (ACDF), focusing on their effects on adjacent segments.
  • Three RS models were tested: Cage-Cage, ZOP-Cage, and CDA-Cage, with the CDA-Cage model showing the least impact on biomechanical responses like range of motion and stress levels in adjacent discs.
  • The research concludes that the CDA-Cage construct is the most effective in minimizing biomechanical changes, suggesting its use to lower the risk of adjacent segment disease recurrence, with ZOP-Cage as a viable alternative if CDA is not applicable.
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Spinal cord injury (SCI) is a severe neurodegenerative disease caused by mechanical and biological factors, manifesting as a loss of motor and sensory functions. Inhibition of injury expansion and even reversal of injury in the acute damage stage of SCI are important strategies for treating this disease. Hydrogels and nanoparticle (NP)-based drugs are the most effective, widely studied, and clinically valuable therapeutic strategies in the field of repair and regeneration.

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Distraction spinal cord injury is caused by some degree of distraction or longitudinal tension on the spinal cord and commonly occurs in patients who undergo corrective operation for severe spinal deformity. With the increased degree and duration of distraction, spinal cord injuries become more serious in terms of their neurophysiology, histology, and behavior. Very few studies have been published on the specific characteristics of distraction spinal cord injury.

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Scoliosis is a three-dimensional structural deformity of the spine; more than 80% of scoliosis has no specific pathogenesis but is understood to be closely related to genetic, hormonal, and environmental factors. In recent years, the epigenetic alterations observed in scoliosis have been analyzed in numerous studies to determine the pathogenesis and progression of this condition, however, there is currently no comprehensive review of the epigenetic factors to date. We searched PubMed, Embase, and Web of Science databases for relative studies without language and date restrictions in March 2023.

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Objective: This study aimed to compare radiographic and clinical outcomes of scoliosis and thoracic hyperkyphosis before and after stretching-based exercises.

Methods: Embase, PubMed, Cochrane Library, Web of Science, and Scopus databases were comprehensively searched for relevant studies from their inception to June 2022. Radiographic outcomes, including the Cobb angle of the main curve and thoracic kyphosis, and clinical outcomes, including the angle of trunk rotation (ATR), chest expansion, Numeric Rating Scale (NRS), and Scoliosis Research Society-22 Patient Questionnaire (SRS-22), were extracted.

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A healthy cervical spine with normal movement is the basis of many daily activities and is essential for maintaining a good quality of life. However, the alignment, fusion, and structure of the cervical spine can change for various reasons, leading to cervical deformity, mainly kyphosis. Approximately 5%‒20% of spinal infections in the cervical spine cause cervical deformity.

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Study Design: Systematic review and meta-analysis.

Objective: This study aimed to compare the radiographical and clinical outcomes between anterior spinal fusion (ASF) and posterior spinal fusion (PSF) in Lenke type 5 adolescence idiopathic scoliosis.

Summary Of Background Data: PSF has been the standard operation for adolescence idiopathic scoliosis.

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Purpose: The aim of this study was to compare the clinical and radiographical outcomes between OLIF and ALIF in treating lumbar degenerative diseases.

Methods: We searched PubMed, Embase, Web of Science, and Cochrane Library for relevant studies. Changes in disc height (DH), segmental lordosis angle (SLA), lumbar lordosis (LL), visual analogue scale (VAS) score, and Oswestry disability index (ODI) between baseline and final follow-up, along with other important surgical outcomes, were assessed and analysed.

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Distraction spinal cord injuries (DSCIs) often occur as the neurological complication of distraction forces following the implantation of internal fixation devices during scoliosis correction surgery. However, the underlying mechanism behind these injuries remains unclear. The present study aimed to explore the activation of microglia and macrophages, as well as changes in TLR4-mediated NF-κB and MAPK pathway activity after DSCIs in Bama miniature pigs.

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Exosomes are extracellular vesicles formed by various donor cells that regulate gene expression and cellular function in recipient cells. Exosomes derived from mesenchymal stem cells (MSC-Exos) perform the regulatory function of stem cells by transporting proteins, nucleic acids, and lipids. Intervertebral disc degeneration (IDD) is one of the main causes of low back pain, and it is characterized by a decreased number of nucleus pulposus cells, extracellular matrix decomposition, aging of the annulus fibrosus, and cartilage endplate calcification.

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