Publications by authors named "Zhechen Li"

Objective: To evaluate internal carotid artery's (ICA) anatomical relationships with atlantoaxial joints and posterior pharyngeal wall and to illustrate ICA injury risk during transoral procedures to the upper cervical spine.

Methods: Cervical spine computed tomography angiography of 238 patients was retrospectively evaluated. Each ICA was classified into 1 of 3 zones: areas medial (Zone 1), anterior (Zone 2), or lateral (Zone 3) to the atlantoaxial joint.

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Objective: There is a controversy in studies of circulating inflammatory proteins (CIPs) in association with osteoporosis (OP) and fractures, and it is unclear if these two conditions are causally related. This study used MR analyses to investigate the causal associations between 91 CIPs and OP and 9 types of fractures.

Methods: Genetic variants data for CIPs, OP, and fractures were obtained from the publicly available genome-wide association studies (GWAS) database.

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Background: Finite element analysis (FEA) was performed to investigate the biomechanical differences between different adjunct fixation methods for oblique lumbar interbody fusion (OLIF) and to further analyze its effect on adjacent segmental degeneration.

Methods: We built a single-segment (Si-segment) finite element model (FEM) for L4-5 and a double-segment (Do-segment) FEM for L3-5. Each complete FEM was supplemented and modified, and both developed two surgical models of OLIF with assisted internal fixation.

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In this study, we investigated the variations in production performance, health status, and gut microbiota of meat rabbits raised in the semi-confined barn during summer and winter. Compared to summer, rabbits reared in winter possessed significantly higher slaughter weight and carcass weight. Rabbits fed in the summer were more vulnerable to different stressors, which led to increased protein levels of HSP90, IL-1α, IL-1β, IL-2, and concentrations of MDA, but declined GSH and SOD activities.

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Background: The epididymis is a highly regionalized tubular organ possesses vectorial functions of sperm concentration, maturation, transport, and storage. The epididymis-expressed genes and proteins are characterized by regional and developmental dependent pattern. However, a systematic and comprehensive insight into the postnatal development dependent changes in gene and protein expressions of porcine epididymis is still lacking.

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Introduction: Pollutant gas emissions in the current production system of the livestock industry have negative influences on environment as well as the health of farm staffs and animals. Although ammonia (NH3) is considered as the primary and harmful gas pollutant in the rabbit farm, less investigation has performed to determine the toxic effects of house ammonia exposure on rabbit in the commercial confined barn.

Methods: In this study, we performed multi-omics analysis on rabbits exposed to high and low concentration of house ammonia under similar environmental conditions to unravel the alterations in nasal and colonic microbiota, pulmonary and colonic gene expression, and muscular metabolic profile.

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Background: To explore the clinical safety and efficacy of single-stage posterior-only debridement, decompression, allograft bone using titanium mesh and interbody fusion combined for the treatment of thoracolumbar spinal tuberculosis complicated with psoas abscesses.

Methods: A total of 38 patients diagnosed with thoracolumbar spinal tuberculosis complicated with psoas abscesses underwent surgery via single-stage posterior-only debridement, decompression, allograft bone using titanium mesh and interbody fusion from January 2010 to September 2016 were enrolled in the study. The clinical efficacy of the approach was assessed based on parameters including operating time, blood loss, Cobb angle, visual analogue scale (VAS) scores, Frankel grade, erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP).

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Purpose: Patients with Hirayama disease (HD) present with a larger range of neck flexion and show signs of cervical spine instability. Cervical spine stability largely relies on cervical spine muscles. The purpose of this study was to compare the cross-sectional areas (CSAs) of cervical spine muscles between patients with HD and healthy controls, providing some insights into whether there is cervical spine muscle weakness and incongruence in HD patients.

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This study aimed to compare the effectiveness of titanium mesh cages (TMCs) with autogenous iliac bone grafts (AIBG) in posterior-only surgery for thoracic and lumbar spinal tuberculosis. Retrospective investigative design. The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.

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Background: Antituberculosis chemotherapy have been widely used for lower cervical spine tuberculosis and brought out favorable outcomes. However, the contribution of surgical treatment is not well investigated yet. Therefore, this study aimed to evaluate the clinical efficacy and feasibility of surgical treatment for lower cervical spine tuberculosis by anterior debridement, decompression, fusion and instrumentation.

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Objective: To present a preliminary experience of perioperative management for patients with spinal tuberculosis (STB) and end-stage renal disease (ESRD) and discuss strategic factors that should be considered.

Methods: A retrospective study of 6 patients with STB and ESRD who underwent spine surgeries in our hospital from January 2010 to May 2017 was carried out. Medical records were reviewed for clinical manifestations, laboratory examinations, radiologic findings, perioperative management, clinical outcomes, and complications.

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Objective: To investigate the effectiveness of allograft bones combined with poly-ether-ether-ketone (PEEK) cages or titanium mesh cages (TMCs) in the management of cervical spinal tuberculosis.

Methods: A total of 16 patients with cervical spinal tuberculosis who underwent anterior debridement, reconstruction with allograft bones combined with PEEK cages or TMCs, and anterior plate fixation between 2013 and 2016 were retrospectively studied. Neck pain, neurologic status, operating time, intraoperative blood loss, cervical spine alignment, bony fusion, and self-reported clinical outcomes were reviewed.

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Objective: To evaluate the clinical efficacy and feasibility of one-stage surgical treatment for consecutive multisegment thoracic spinal tuberculosis with kyphosis by posterior-only debridement, interbody fusion, and instrumentation.

Methods: Sixty-two patients who underwent posterior debridement, interbody fusion, and instrumentation were reviewed for radiographic fusion, region kyphosis, neurologic status, and clinical outcomes. Thoracic Cobb's angle and Frankel grading system were used to assess kyphosis and neurologic improvements, respectively.

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Objective: To provide a quantitative assessment of clinical outcomes of anterior cervical surgery for patients with Hirayama disease.

Methods: Nineteen patients undergoing anterior cervical surgery were retrospectively collected, and preoperative and postoperative clinical and radiographic data were compared.

Results: All patients had a mean follow-up time of 72.

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