Publications by authors named "Zhenlei Liu"

The SARS-CoV-2 virus caused the COVID-19 pandemic and brought major challenges to public health. It is transmitted via aerosols, droplets, and fomites. Among these, viral transmission through fomites is not well understood although it remains a very important transmission route.

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Adhesive arachnoiditis (AA) is a rare form of chronic degenerative pathology associated with persistent inflammation in the arachnoid matter of the spinal cord. Despite the existing knowledge, the detailed pathological mechanisms underlying AA are not fully understood. This study aimed to elucidate through comprehensive single nuclei RNA sequencing (snRNA-seq) to delineate the transcriptomic landscape of AA.

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Study Design: Low back pain (LBP) is a widespread clinical symptom affecting nearly all age groups and is a leading cause of disability worldwide. Degenerative changes in the spine and paraspinal tissues primarily contribute to the etiology of LBP.

Objectives: We conducted this systematic review of animal models of paraspinal muscle (PSM) degeneration secondary to degenerative intervertebral disc (IVD), providing a comprehensive evaluation of PSM structural changes observed in these models at both macroscopic and microscopic levels.

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The pathophysiological mechanism of adhesive arachnoiditis (AA) is complex, involving the interaction of multiple proteins. In recent years, the development of quantitative proteomics technology has provided a new perspective to reveal its pathological mechanism. The main objective of this study was to reveal the changes of protein expression profiles in arachnoid tissue of patients with AA.

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  • The study investigates the connection between cervical lordosis (CL) and the rotation angle of the axis in patients with atlantoaxial dislocation (AAD) to improve surgical planning.
  • Imaging data from 23 AAD patients were analyzed, showing a strong linear relationship between changes in CL and a new angle B, which helps in understanding the axis's position.
  • The findings suggest that the relationship between angle B and CL can significantly enhance the precision of surgical techniques for AAD patients.
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Adult tethered cord syndrome (ATCS) has a hidden onset and delayed clinical symptoms. The purpose of this study is to identify hub proteins in the cerebrospinal fluid of ATCS patients through bioinformatics analysis, and to find significant heterogeneity in these proteins between ATCS patients and non ATCS patients (control group). Firstly, differential genes were screened based on proteomic results.

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Background: Spinal adhesive arachnoidopathy (SAA) is a chronic pathology associated with persistent inflammatory responses in the arachnoid. Adhesive arachnoiditis (AA) is one of the major forms of SAA, with accompanying secondary complications. Therefore, we aimed to systematically review both clinical and animal model studies related to SAA to gain a deeper understanding of this unique pathology.

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Objective: The objective of this study was to analyze failed posterior fossa decompression (PFD) in patients with basilar invagination and atlantoaxial dislocation (BI-AAD). Revision surgery in these patients is challenging and has been rarely reported. In addition, the anatomical variations of the vertebral artery increase the risk of revision surgery.

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  • The anterior controllable antedisplacement and fusion (ACAF) technique, particularly the "Klotski technique," presents a new approach for treating cervical ossification of the posterior longitudinal ligament (OPLL) while minimizing fused segments.
  • A study of 25 patients compared the ACAF Klotski technique with anterior cervical corpectomy and fusion (ACCF), revealing fewer complications and better postoperative outcomes for those treated with the ACAF technique.
  • Results showed the ACAF group had a lower rate of neurological deterioration and intraoperative cerebrospinal fluid leakage compared to the ACCF group, making it a favorable option for en bloc type OPLL-DO treatment.
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Synbiotics, the combination of probiotics and prebiotics, are thought to be a pragmatic approach for the treatment of various diseases, including inflammatory bowel disease (IBD). The synergistic therapeutic effects of probiotics and prebiotics remain underexplored. , a short-chain fatty acid (SCFA) producer, has been recognized as a promising probiotic candidate that can offer health benefits.

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  • Automatic segmentation of vertebrae in spinal x-ray images is important for clinical purposes but faces challenges due to low contrast and noise in x-ray images.
  • The study introduces a Multiscale Feature Enhancement Network (MFENet) that uses advanced techniques like a Dual-branch Feature Extraction Module and a Semantic Aggregation Module to improve feature extraction for better diagnosis of spinal diseases.
  • Experimental results show that MFENet outperforms other advanced methods in accurately segmenting spinal x-ray images, highlighting its effectiveness in clinical applications.
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Objective: This study aimed to investigate the differences in clinical features, diagnostic examination, treatment, and pathological results between adult-onset and pediatric-onset tethered cord syndrome (TCS).

Methods: The authors searched the PubMed, Embase, and Cochrane Library databases through January 2023 for reports on TCS, extracting information on clinical features, imaging data, treatment modalities, prognosis, and pathological research results. A total of 6135 cases from 246 articles were included in the analysis.

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Objective: Surgical procedures for patients with posttraumatic syringomyelia (PTS) remain controversial. Until now, there have been no effective quantitative evaluation methods to assist in selecting appropriate surgical plans before surgery.

Methods: We consecutively enrolled PTS patients (arachnoid lysis group, n = 42; shunting group, n = 14) from 2003 to 2023.

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  • - The study aimed to explore how the best1 gene knockdown in zebrafish affects development, particularly in relation to craniovertebral junction malformations.
  • - Researchers used specific morpholinos to inhibit the best1 gene, leading to observable defects in zebrafish like shorter length, microcephaly, and impaired brain and eye growth.
  • - The findings suggest that the best1 gene is crucial for proper development of the eyes, brain, and bones, with implications seen in a human patient exhibiting similar developmental issues.
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  • The study is a cohort analysis aimed at understanding the link between blood-spinal cord barrier (BSCB) markers and negative outcomes in patients with post-traumatic syringomyelia (PTS) who underwent intradural adhesion lysis (IAL).
  • It involved 46 PTS patients and 19 control subjects, measuring various blood and spinal fluid markers before and after surgery to assess their correlation with recovery outcomes.
  • Findings indicate that higher levels of certain proteins in the spinal fluid are significantly associated with worse recovery from surgery, with a specific threshold identified for predicting adverse outcomes.
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To investigate the cold response mechanism and low temperature regulation of flowering in tulips, this study identified 32 MADS-box transcription factor family members in tulips based on full-length transcriptome sequencing, named TgMADS1-TgMADS32. Phylogenetic analysis revealed that these genes can be divided into two classes: type I and type II. Structural analysis showed that genes from different subfamilies have a similar distribution of conserved motifs.

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The CRISPR-Cas systems have shown tremendous promise as heterologous tools for genome editing in various prokaryotes. However, the perturbation of DNA homeostasis and the inherent toxicity of Cas9/12a proteins could easily lead to cell death, which led to the development of endogenous CRISPR-Cas systems. Programming the widespread endogenous CRISPR-Cas systems for in situ genome editing represents a promising tool in prokaryotes, especially in genetically intractable species.

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Objective: Although cerebrospinal fluid (CSF)-based liquid biopsy was proved to be practical in molecular analysis of intracranial gliomas, liquid biopsy of primary intramedullary astrocytoma was rarely reported. Given the distinct genomic profiles between primary intramedullary glioma and intracranial astrocytoma, whether the feasibility of CSF-based molecular analysis of intracranial gliomas can be replicated in primary spinal cord astrocytoma needs to be investigated. The aim of this pilot study is to evaluate the feasibility of molecular analysis of primary intramedullary astrocytoma through sequencing CSF-derived circulating tumor DNA (ctDNA).

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Objective: To compare the efficacy of oblique lateral interbody fusion (OLIF), OLIF combined with anterolateral screw fixation (OLIF-AF), and OLIF combined with percutaneous pedicle screw fixation (OLIF-PF) in the treatment of single-level or 2-level degenerative lumbar disease.

Methods: Between January 2017 and 2021, 71 patients were treated with OLIF and combined OLIF. The demographic data, clinical outcomes, radiographic outcomes, and complications were compared among the 3 groups.

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Objective: The surgical management of basilar invagination without atlantoaxial dislocation (type B basilar invagination) remains controversial. Hence, we have reported the use of posterior intra-articular C1-2 facet distraction, fixation, and cantilever technique versus foramen magnum decompression in treating type B basilar invagination as well as the results and surgical indications for this procedure.

Methods: This was a single-center retrospective cohort study.

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Background: To develop a practical prediction model to predict the risk of deep surgical site infection (SSI) in patients receiving open posterior instrumented thoracolumbar surgery.

Methods: Data of 3419 patients in four hospitals from 1 January 2012 to 30 December 2021 were evaluated. The authors used clinical knowledge-driven, data-driven, and decision tree model to identify predictive variables of deep SSI.

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  • Primary spinal cord astrocytoma (SCA) is a rare cancer, and this study focuses on understanding its genetic mutations through genome-sequencing analyses of 51 primary SCAs.
  • Researchers identified 12 driver genes, with H3F3A, TP53, and NF1 being the most frequently mutated, along with three novel driver genes not often seen in other gliomas.
  • Findings highlight shared mutations between SCAs and brainstem glioma, providing insights that could lead to new drug targets and better understanding of glioma molecular profiles.
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Background: A specific scoring system for syringomyelia is lacking. Our objective was to investigate the value of a novel scoring system (Syringomyelia Outcome Scale of Xuanwu hospital, SOS-XW) in assessing surgical outcomes in the treatment of syringomyelia (SM) associated with Chiari malformation type I (CM I).

Methods: A quantitative evaluation system (SOS-XW) of SM includes 4 parameters: pain (P), sensation (S), movement (M), and syringomyelia tension index (STI).

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Objective: Combined with different configuration types of syringomyelia, to analyze the correlation between syrinx resolution and changes in cervical sagittal alignment following Foramen magnum and Magendie dredging (FMMD) for syringomyelia associated with Chiari I malformation (CM-I), and to further explore the respective relationship with clinical outcome.

Methods: A consecutive series of 127 patients with CM-I and syringomyelia who underwent FMMD in our center met the inclusion criteria of this study. Their clinical records and radiologic data were retrospectively reviewed.

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Frozen storage technology has been widely used for the preservation of Aquatic products. However, ice crystals formation, lipid oxidation and protein denaturation still easily causes aquatic products deterioration. Cryoprotectants are a series of food additives that could efficiently prolong the shelf life and guarantee the acceptability of frozen aquatic products.

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