Publications by authors named "Zhinan Ren"

Article Synopsis
  • A study looked at how a substance called ginsenoside Rg1 can help stop the degeneration of intervertebral discs (the cushions between vertebrae) in rats.
  • The researchers used different doses of Rg1 and found that it improved the health of the discs and stopped harmful reactions in the cells.
  • They discovered that Rg1 works by blocking a specific pathway (NF-κB) that causes inflammation and cell death, which can help prevent serious problems in the spine.
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In this study, knockout of FOXO3 was found to impair intervertebral disc maturation and homeostasis in postnatal mice as well as facilitating extracellular matrix degradation. RNA sequencing can uncover disease-related gene expression and investigate disease pathophysiology. High-throughput transcriptome sequencing and experimental validations were used to identify the essential gene and mechanism involved in intervertebral disc degeneration (IDD).

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Objective: The study purpose was to compare unilateral biportal endoscopic lumbar interbody fusion (ULIF) with minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) for the treatment of lumbar degenerative diseases in terms of surgical trauma and short-to medium-term postoperative results.

Methods: Forty-nine patients with lumbar degenerative diseases (25 underwent ULIF, 24 underwent MIS-TLIF) who were treated between May 2019 and October 2021, were included in this retrospective analysis. We compared the 2 groups' blood loss, serum C-reactive protein (CRP), visual analog scale (VAS) scores for low back and leg pain, and the Oswestry Disability Index (ODI) score and slip percentage (SP).

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The transcription factor p300 is reportedly involved in age-associated human diseases, including intervertebral disc degeneration (IDD). In this study, we investigate the potential role and pathophysiological mechanism of p300 in IDD. Clinical tissue samples were collected from patients with lumbar disc herniation (LDH), in which the expression of p300, forkhead box O3 (FOXO3), and sirtuin 1 (Sirt1) was determined.

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The present study aimed to develop nomograms to predict survival in patients with chondroblastic osteosarcoma (COS).An analysis was conducted of 320 cases of COS collected from the surveillance, epidemiology, and end results (SEER) database between 2004 and 2015. Independent prognostic factors were screened using univariate and multivariate Cox analyses.

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Background: Osteosarcoma is one of the most common primary bone tumour in children and young patients, and the third most common among adults. Its main treatment option is currently based on neoadjuvant or adjuvant chemoradiotherapy along with the lesion's surgical resection. The current study's primary aim is to examine the clinical therapeutic impacts of combined methotrexate, along with other chemotherapeutic agents to treat children and young adults suffering from osteosarcoma.

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Background: Spinal epidural lipomatosis is a rare cause of lumbar spinal stenosis. While conservative therapy is applicable for most of cases, surgical intervention is necessary for severe ones. This is the first time we apply this modified technique to this disease.

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Osteosarcoma is the most common primary malignant tumor of bone derived from osteoblasts, which is a noteworthy threat to the health of children and adolescents. In this study, we found that MCM8 has significantly higher expression level in osteosarcoma tissues in comparison with normal tissues, which was also correlated with more advanced tumor grade and pathological stage. In agreement with the role of MCM proteins as indicators of cell proliferation, knockdown/overexpression of MCM8 inhibited/promoted osteosarcoma cell proliferation in vitro and tumor growth in vivo.

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Objective: To evaluate the safety and efficacy of modified facet joint fusion (MFF) for the treatment of multilevel (three-level or more) lumbar spinal stenosis (LSS).

Patients And Methods: In this retrospective study, 135 consecutive patients who underwent initial MFF for multilevel LSS were included. Clinical outcomes included fusion rate, change of visual analogue scale pain scores for low back pain (VAS-LBP) and leg pain (VAS-LP), Japanese Orthopedic Association scores (JOA), Oswestry Disability Index (ODI) and MacNab classification before and after MFF.

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Background: Controversy still exists regarding the optimal fusion technique for the treatment of unstable lumbar spondylolisthesis.

Objective: To evaluate the safety and efficacy of modified facet joint fusion (MFF).

Methods: A total of 491 patients with unstable lumbar spondylolisthesis who underwent MFF were retrospectively reviewed.

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Background: Posterior lumbar interbody fusion (PLIF) surgery is associated with significant blood loss; however, few studies have focused on hidden blood loss (HBL) in PLIF or its regulatory factors. The purpose of this study was to explore the HBL in PLIF surgery as well as the influence of tranexamic acid (TXA) on blood loss in PLIF.

Methods: We performed a randomized controlled trial (RCT) and recruited patients undergoing PLIF into the study from November 2013 to April 2017.

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Optimal surgical technique to treat lumbar disc herniation (LDH) remains controversial. We described a small incision discectomy technique (SID), and to evaluate its safety and efficacy. A retrospective study involving 98 consecutive patients with LDH managed by SID was conducted.

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Background: Despite introducing novel analgesics, pain management for spine surgery remains a challenge. Multimodal pain control has recently gained popularity in surgical spine care. We proposed a novel management approach using multimodal cocktail analgesics.

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Background: Tranexamic acid (TXA) has been routinely delivered in multisegmental spinal decompression and bone graft fusion surgeries with satisfactory outcomes in minimizing gross blood loss and transfusion demands. However, concerns remain that intravenously delivered TXA (ivTXA) may increase risks of postoperative convulsive seizures and systemic thrombogenicity. Topical use of TXA (tTXA), being more targeted to the surgical bleeding site while minimizing patient systemic exposure to ivTXA, has been successfully applied to attenuate blood losses and transfusion requirements in hip and knee arthroplasty.

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Objective: To introduce a method of accurately measuring the equivalent dose received by radiation-sensitive organs using the thermoluminescent dosimeter (TLD) and to provide reference values for future studies associated with radiation protection in patients undergoing lumbar spine surgeries.

Methods: After careful selection and preparation, TLD chips were used to obtain measurements from the eyes, thyroid glands, breasts, and gonads of 20 patients undergoing lumbar spine surgeries. The results were obtained via air kerma conversion-related calculations.

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Background Context: It is widely accepted that tranexamic acid (TXA) effectively reduces blood losses and transfusions in major surgeries. However, limited studies investigated the role of TXA in conserving blood and saving operative time in spine surgeries.

Purpose: This meta-analysis was conducted to gather scientific evidence for TXA efficacy on conserving blood and saving operative time in spine surgeries.

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Background: This is a randomized controlled trial research to assess the hemostatic efficacy of gelatin sponge, collagen sponge, and topical use of tranexamic acid (TXA) on postoperative blood loss in posterior spinal fusion surgeries.

Methods: We recruited patients with spinal degenerative diseases into the study from November 2013 to October 2016. All the participants were assigned to 3 groups using a simple, equal-probability randomization scheme: group A is a control group utilizing gelatin sponge, while groups B and C are experimental groups, applying collagen hemostatic sponge and topical TXA respectively.

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In spinal fusion surgery, total blood loss (TBL) is composed of visible blood loss from the surgical field and wound drainage, and hidden blood loss (HBL). Until now, no published studies exist reporting the effect of topical use of tranexamic acid (tTXA) on HBL in patients undergoing posterior lumbar spinal fusion surgery. This study aimed to explore the effect of tTXA on HBL during primary posterior lumbar spinal fusion surgery.

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Study Design: A retrospective case-control study.

Objective: To compare postoperative blood loss, amount of allogeneic blood transfusion, removal time of drainage tube, length of hospital stay, and complications associated with tranexamic acid (TXA).

Summary Of Background Data: Spinal fusion surgery can be associated with significant blood loss.

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Background: Spinal fusion surgery is associated with significant blood loss, which may result in potential clinical complications, it is necessary to take safe and effective measures to reduce blood loss in surgery. We perform this study to assess the impact of three different hemostatic materials on perioperative blood loss.

Methods: We performed a Randomized Controlled Trial research and recruited patients with lumbar disease into the study between November 2013 and March 2015.

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Intravenous leiomyomatosis (IVL) is a rare benign tumor. The study aimed to assess outcomes of patients treated surgically for IVL.Between November 2002 and January 2015, 76 patients were treated for IVL.

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Objective: To identify risk factors for postoperative complications associated with growing rod surgery for early-onset scoliosis (EOS).

Methods: A total of 55 consecutive patients underwent growing rod surgery for EOS were examined from database. Data included age at initial surgeries, sex, diagnosis, body mass index (BMI), duration of follow-up, initial and final measure of major curve, T2-5, T5-12, T10-L2, and T12-S1 kyphosis angles, levels and type of instrumentation, total number of surgeries, number of rods inserted, number of lengthenings, lengthening intervals and rod location were studied.

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