Publications by authors named "Leyuan Zhou"

Article Synopsis
  • The study aimed to evaluate the effectiveness of transarterial chemoembolization (TACE) alone versus TACE combined with external beam radiation therapy (EBRT) in treating patients with hepatocellular carcinoma (HCC).
  • 74 patients were treated between 2017 and 2022, with 39 receiving TACE only and 35 receiving the combination treatment, focusing primarily on overall survival (OS) and secondary outcomes like progression-free survival (PFS) and local tumor control.
  • The results indicated that while TACE + EBRT improved local control duration significantly and had slightly better PFS and OS compared to TACE alone, both treatments had comparable toxicity levels, supporting the combination as a standard option for treating non-re
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Hepatocellular carcinoma (HCC), a hypervascular tumor, is the most frequent primary malignant tumor of the liver. Angiogenesis inhibitors, such as endogenous angiogenesis inhibitors, are essential for HCC therapy and have generated significant interest owing to their safety, efficacy, and multitargeting attributes. Canstatin is an angiogenesis inhibitor derived from the basement membrane and exerts anti-tumor effects.

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Background: It has been observed that under the single isocenter conditions, the potential shifts of the electronic portal imaging devices (EPID) may be introduced when executing portal dosimetry (PD) plans for bilateral breast cancer, pleural mesothelioma, and lymphoma. These shifts are relative to the calibration positions of EPID and result in significant discrepancies in the plan verification results.

Purpose: To explore methods including correction model and specific correction matrices to revise the data obtained from displaced EPID.

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Article Synopsis
  • The study examined how low-dose radiotherapy (LDRT) combined with immunotherapy can enhance the formation and development of tertiary lymphoid structures (TLSs) in lung adenocarcinoma, which can lead to improved patient outcomes.
  • Results showed that the presence and maturity of TLSs, particularly CD8+ T cells within them, were linked to better survival rates and antitumor effects in both patient samples and a mouse model.
  • This combination therapy represents a new strategy for boosting immune response in lung cancer treatment by increasing the quantity and maturity of TLSs, leading to promising results in fighting the disease.
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Deep learning has shown promise in generating synthetic CT (sCT) from magnetic resonance imaging (MRI). However, the misalignment between MRIs and CTs has not been adequately addressed, leading to reduced prediction accuracy and potential harm to patients due to the generative adversarial network (GAN)hallucination phenomenon. This work proposes a novel approach to mitigate misalignment and improve sCT generation.

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Objective: To investigate the use of non-contrast-enhanced (NCE) and contrast-enhanced (CE) CT radiomics signatures (Rad-scores) as prognostic factors to help improve the prediction of the overall survival (OS) of postoperative colorectal cancer (CRC) patients.

Methods: A retrospective analysis was performed on 65 CRC patients who underwent surgical resection in our hospital as the training set, and 19 patient images retrieved from The Cancer Imaging Archive (TCIA) as the external validation set. In training, radiomics features were extracted from the preoperative NCE/CE-CT, then selected through 5-fold cross validation LASSO Cox method and used to construct Rad-scores.

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Objective: The study explores the application value of three-dimensional arterial spin labeling magnetic resonance imaging (3D pCASL) in early assessment of radiation encephalopathy (REP) in patients with nasopharyngeal carcinoma (NPC).

Methods: A retrospective analysis of 39 cases of NPC was performed. Routine enhanced MRI scan and 3D pCASL imaging were used to examine the apparent diffusion coefficient (ADC) and brain blood flow (CBF) before and after treatment with intensity-modulated radiotherapy (IMRT).

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Background: Lung cancer has some of the highest morbidity and mortality worldwide among cancers, with non-small cell lung cancer (NSCLC) accounting for 85% of lung cancer diagnoses. Severe pulmonary hemorrhage (PH) is a serious potential adverse event in the treatment of lung cancer with bevacizumab. Significant clinical differences have been observed between patients with lung adenocarcinoma (LUAD) and those with lung squamous cell carcinoma (LUSC) after bevacizumab treatment; however, the underlying causes is unclear and requires further study.

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Background: The increasing maturity of sequencing technology provides a convenient approach to studying the role of skin microorganisms in acne pathogenesis. However, there are still too few studies about the skin microbiota of Asian acne patients, especially a lack of detailed analysis of the characteristics of the skin microbiota in the different acne sites.

Methods: In this study, a total of 34 college students were recruited and divided into the health, mild acne, and severe acne groups.

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Tumor-associated macrophages (TAMs) are one of the most abundant cell types in colorectal cancer (CRC) tumor microenvironment (TME). Recent studies observed complicated "cross-talks" between cancer cells and macrophages in TME. However, the underlying mechanisms are still poorly elucidated.

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Background: SLCO4A1-AS1 was found to be upregulated in several cancer types, including colorectal cancer (CRC). However, the detailed roles of SLCO4A1-AS1 in CRC remain to be elucidated. Therefore, we investigated the functions, mechanism, and clinical significance of SLCO4A1-AS1 in colorectal tumourigenesis.

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We propose a new model to identify epilepsy EEG signals. Some existing intelligent recognition technologies require that the training set and test set have the same distribution when recognizing EEG signals, some only consider reducing the marginal distribution distance of the data while ignoring the intra-class information of data, and some lack of interpretability. To address these deficiencies, we construct a TSK transfer learning fuzzy system (TSK-TL) based on the easy-to-interpret TSK fuzzy system the transfer learning method.

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Background: The study aims to perform a clinical trial to evaluate the effect of sequencing of systemic therapy on locally advanced breast cancer (LABC).

Methods: LABC patients (n = 733) underwent the combination of external beam radiation therapy, chemotherapy, and breast-conservation surgery with difference sequences. Biopsy followed by histopathological examinations was used to assess treatment responses.

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Radiotherapy (RT) represents one of the major treatment methods for cancers. However, many studies have observed that in descendant surviving tumor cells, sublethal irradiation can promote metastatic ability, which is closely related to the tumor microenvironment. We therefore investigated the functions and mechanisms of sublethal irradiated liver nonparenchymal cells (NPCs) in hepatocellular carcinoma (HCC).

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Article Synopsis
  • A study evaluated the effects of systematic nutrition management (SNM) on patients with locally advanced nasopharyngeal carcinoma (LA-NPC) undergoing radiotherapy, comparing those who received SNM with a control group that did not.
  • Results showed that the SNM group had better nutritional outcomes, with a lower percentage of malnourished patients and improved nutritional indexes, as well as less severe oral side effects during treatment.
  • Although there were improvements in quality of life for the SNM group, the overall survival and progression-free survival rates were similar between both groups after a follow-up period of almost 25 months.
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Background: Chemoresistance is a common problem for cancer treatment worldwide. Circulating exosomal microRNAs (miRNAs) have been considered as promising biomarkers of cancers. However, few studies have assessed the relationship between serum/plasma exosomal microRNAs and chemoresistance in colorectal cancer (CRC).

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Artificial intelligence algorithms have been used in a wide range of applications in clinical aided diagnosis, such as automatic MR image segmentation and seizure EEG signal analyses. In recent years, many machine learning-based automatic MR brain image segmentation methods have been proposed as auxiliary methods of medical image analysis in clinical treatment. Nevertheless, many problems regarding precise medical images, which cannot be effectively utilized to improve partition performance, remain to be solved.

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Purpose: The effect of I seed implantation for the treatment of local residual tumor of hepatocellular carcinoma located beneath the diaphragm (HCC-LBD) after transcatheter arterial chemoembolization (TACE) has not yet been reported. This retrospective study was performed to evaluate the safety and efficacy of I seeds implantation (ISI) for the treatment of residual HCC-LBD after TACE.

Methods And Materials: A total of 18 patients treated with ISI between August 2012 and March 2018 for residual HCC-LBD after single or multiple TACE were enrolled.

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Introduction: In this study, the radiation-enhancing effects of combined treatment with nimotuzumab, a humanized EGFR-blocking antibody, and celecoxib, a COX-2 selective inhibitor, in human nasopharyngeal carcinoma (NPC) cells were investigated.

Materials And Methods: 3-(4,5-Dimethylthiazol-2yl)-2,5-diphenyltetrazolium bromide and clonogenic survival assays were done to evaluate the combined cytotoxic and radiosensitizing effects of nimotuzumab or celecoxib or the combination on CNE1 and CNE2 cells. Western blot analysis was performed to identify the effect of nimotuzumab and/or celecoxib with or without irradiation on the cytoplasmic and nuclear EGFR signaling pathways in CNE2 cells.

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Objectives Our goal was to investigate the effects of rucaparib on the proliferation of cervical cancer cells and sensitivity to radiotherapy. Methods We used the human cervical cancer cell lines Hela and Siha and evaluated their viability and activity using various methods. Cellular proliferation was assessed by CCK-8 and clonogenic assays after treatment with rucaparib.

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Objective: This study aimed to evaluate the safety and efficacy of intensity-modulated radiotherapy (IMRT) plus nimotuzumab with or without concurrent chemotherapy (CCT) for patients with locally advanced nasopharyngeal carcinoma (LA-NPC).

Patients And Methods: A total of 50 newly diagnosed patients with LA-NPC treated at the Affiliated Hospital of Jiangnan University between November 2011 and January 2017 were retrospectively analyzed. All patients received the combined treatment modality of nimotuzumab plus IMRT.

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Tumor-associated macrophages (TAMs) are frequently associated with poor prognosis in human cancers. However, the effects of TAMs in colorectal cancer are contradictory. We therefore investigated the functions, mechanisms, and clinical significance of TAMs in colorectal cancer.

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Purpose: To retrospectively evaluate the efficacy and safety of computed tomography (CT)-guided percutaneous interstitial brachytherapy using I radioactive seeds for multiple pulmonary metastatic tumors.

Material And Methods: Between September 2013 and December 2015, 22 patients with multiple pulmonary metastases, who after conventional chemotherapy and trans-arterial chemoembolization (TACE) therapy were considered unable to withstand stereotactic body radiation therapy (SBRT), received CT-guided I brachytherapy. Clinical data were studied retrospectively.

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Overexpression of epidermal growth factor receptor can be found in more than 80% of patients with locoregionally advanced nasopharyngeal carcinoma and is associated with shorter survival. In this work, we evaluated the feasibility of adding nimotuzumab to chemoradiation in locoregionally advanced nasopharyngeal carcinoma. Twenty-three patients with clinically staged T3-4 or any node-positive disease were enrolled.

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