Publications by authors named "Guang-Yuan Sun"

Article Synopsis
  • The study aims to evaluate the effectiveness of the gene ARHGAP8 as a predictor for how well patients with locally advanced mid-low colorectal cancer respond to neoadjuvant chemotherapy.
  • Researchers conducted a comprehensive analysis using bioinformatics, clinical samples, and various validation methods to measure ARHGAP8 expression in cancer vs. normal tissues from patients.
  • Findings indicate that ARHGAP8 expression levels are significantly higher in cancer tissues, are associated with factors like tumor stage and age, and may help in predicting treatment outcomes in colorectal cancer patients receiving chemotherapy.
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Rationale And Objectives: To compare the performance of SS, FOCUS SS, MUSE, and FOCUS MUSE DWI for pulmonary lesions to obtain a better technique for pulmonary DWI imaging.

Materials And Methods: 44 patients with pulmonary lesions were recruited to perform pulmonary DWI using SS, FOCUS SS, MUSE, and FOCUS MUSE sequences. Then, two radiologists with 12 and 10 years of chest MRI experiences assessed the overall image quality while another two radiologists both with 3 years of experiences evaluated the SNR, DR, and ADC of pulmonary lesions.

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Objective To investigate the expression and correlation of Runt-related transcription factor 3(RUNX3)and enhancer of zeste homolog 2(EZH2)in rectal cancer,and to reveal the relationship between the expression of RUNX3 and EZH2 and the sensitivity of XELOX regimen to neoadjuvant chemotherapy in locally advanced rectal cancer patients. Methods The carcinoma and paracancerous tissues of 31 patients with rectal adenocarcinoma and no preoperative antitumor therapy were selected as cancer group and paracancer group,respectively.The relative mRNA levels of RUNX3 and EZH2 in the two groups were measured by real-time quantitative reverse transcription-polymerase chain reaction,and the protein levels were determined by immunohistochemical assay.

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Article Synopsis
  • The study investigates how inhibiting Id-1 affects the growth and movement of colon cancer cells (SW480 and HT-29).
  • Results show that cells with reduced Id-1 expression had lower rates of proliferation and migration compared to control groups.
  • This suggests that Id-1 promotes the aggressive characteristics of colon cancer cells, making it a potential target for therapeutic intervention.
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Rationale: Neuroblastoma is the most common extracranial malignant solid tumor that occurs during childhood. It arises from primitive cells and is found in the adrenal medulla and sympathetic ganglia of the sympathetic nervous system. Huge neuroblastoma in the retroperitoneum, especially adult involvement is extremely rare.

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Arsenic trioxide (AsO) exhibits a remarkable effect on leukemia treatment; however, its effect on solid tumors remains poorly explored. The present study demonstrated the inhibitory effect of AsO on lung cancer and explored its possible mechanism. It was observed that AsO significantly inhibited the growth of lung cancer xenografts and tumor angiogenesis .

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Objective: To study the expression of RUNX3 in colorectal adenocarcinoma tissues and its correlation with microvessel density (MVD), and investigate the clinical pathological prognostic significance of RUNX3 and MVD in patients with colorectal cancer.

Methods: The expression value of RUNX3 and MVD in 70 specimens' colorectal adenocarcinoma tissues were detected by immunohistochemistry staining technique. The correlation between their expression and the clinicopathologic features was also investigated.

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Objective To explore the expressions of inhibitors of DNA binding-1 (Id-1) and matrix metalloproteinase-9 (MMP-9) in colorectal carcinoma tissues and its correlation with microvessel density (MVD). Methods The expressions of Id-1 and MMP-9 as well as CD34-labelled MVD in colorectal adenocarcinoma tissues (n=50) and normal adjacent tissues (n=50) were examined by immunohistochemistry. Results The positive expressions of Id-1 and MMP-9 were seen in 72.

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Arsenic trioxide (As2O3) has been used in the clinic for the treatment of acute promyelocytic 1eukemia and some solid tumors. However, its effectiveness against lung cancer has not been well demonstrated, and the underlying mechanism(s) of action remain unclear. In the present study, we found that As2O3 significantly inhibited the growth of non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC) xenograft tumors.

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