Publications by authors named "Yan-fen Feng"

Purpose: To investigate the functional and structural characteristics of temporomandibular joint(TMJ) in introverted deep overbite patients with severe wear, to analyze the correlation between the vertical distance of the lower 1/3 of the face and TMJ space, and to compare the clinical efficacy of multidisciplinary treatment with orthodontics and prosthodontics on TMJ function.

Methods: Eighty patients with deep overbite and severe abrasion and forty subjects with normal occlusion admitted to our hospital from January 2019 to June 2023 were enrolled in this study. The clinical data were collected and the functional and structural characteristics of TMJ were collected.

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Background: Lung adenocarcinoma (LUAD) is still one of the most prevalent malignancies. Interleukin factors are closely associated with the initiation and progression of cancer. However, the relationship between interleukin factors and LUAD has not been fully elucidated.

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Purpose: To observe the effect of orthodontics combined with restoration on masticatory function in deep overbite patients with severe lower anterior teeth attrition.

Methods: From January 2018 to January 2022, a total of 164 deep overbite patients with severe lower anterior teeth attrition were collected and divided into two groups according to different treatment plans: control group(72 patients, with restoration treatment) and experimental group(92 patients, with orthodontics combined with restoration treatment). The chewing efficiency of the two groups was evaluated, temporomandibular joint dysfunction index (DI), muscle palpation index (PI) and cranio-mandibular index (CMI) were calculated.

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Purpose: To investigate the effectiveness of combined orthodontic and restoration treatment for introverted deep overbite patients with severe wear.

Methods: A total of 86 introverted deep overbite patients with severe wear admitted to Cangzhou People's Hospital from December 2020 to June 2022 were collected and divided into the control group and the experimental group by gender, age, degree of wear and tear, with 43 cases in each group. The control group received orthodontic treatment, while the experimental group received combined orthodontic and restoration treatment.

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Hypothyroidism has been suggested to play a role in tumor progression. However, the causal association between hypothyroidism and lung cancer remains unknow. To elucidate the potential association between hypothyroidism and lung cancer risk, we employ a Mendelian randomization (MR) approach.

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Solitary fibrous tumors (SFTs) are rare mesenchymal tumors with unpredictable evolution and with a recurrence or metastasis rate of 10-40%. Current medical treatments for relapsed SFTs remain ineffective. Here, we identify potential therapeutic targets and risk factors, including IDH1 p.

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Background: This study aimed to identify the key genes involved in the development of multiple primary lung cancers.

Methods: Differential expression analysis was performed, followed by comparing the infiltration levels of 22 immune cell types between multiple and single primary lung adenocarcinomas. Marker genes for epithelial cells with different proportions between the two types of lung adenocarcinomas were identified.

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Background: We aimed to elucidate the clinical characteristics, prognostic factors and optimal treatment modalities of head and neck lymphoepithelioma-like carcinoma (HNLELC).

Methods: Consecutive patients newly-diagnosed with non-metastatic HNLELC between December 2001 and March 2021 treated with curative intent were retrospectively reviewed.

Results: A total of 288 patients were included, of whom 87 (30.

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Background: Oxidative stress plays an important role in the progression of various types of tumors. However, its role in esophageal squamous cell carcinoma (ESCC) has seldom been explored. This study aimed to discover prognostic markers associated with oxidative stress in ESCC to improve the prediction of prognosis and help in the selection of effective immunotherapy for patients.

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Background: General transcription factor IIi (GTF2I) mutations are very common in thymic epithelial tumors (TETs) and are related to a more favorable prognosis in TET patients. However, limited research has been conducted on the role of GTF2I in the tumor immune microenvironment (TIME). Further, long non-coding RNAs (lncRNAs) have been associated with the survival of patients with TETs.

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Article Synopsis
  • Oesophageal squamous cell carcinoma (ESCC) is a serious and common cancer type in China, known for its high mortality and complexity in treatment.
  • Researchers analyzed Ras-related gene expressions in ESCC using data from GTEx and TCGA databases, identifying three unique cancer clusters linked to distinct prognostic values.
  • They developed a new prognostic prediction model based on Ras-related genes, achieving an impressive AUC of 0.932, suggesting this approach could enhance disease understanding and improve treatment outcomes for ESCC patients.
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Background: Inhibitory checkpoints are promising antitumor targets and predictive biomarkers in a variety of cancers. We aimed to identify the expression levels and prognostic value of multiple inhibitory checkpoints supported by preclinical and clinical evidence in head and neck lymphoepithelioma-like carcinoma (HNLELC).

Methods: The expression of seven inhibitory checkpoints were evaluated in the tumor nest (TN) and tumor stroma (TS) of 102 HNLELC specimens using immunohistochemistry and digital pathology, and an inhibitory checkpoint-based signature (ICS) was subsequently constructed using the LASSO Cox regression model.

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Article Synopsis
  • The study investigates the impact of Major Pathologic Response (MPR) and lymph node status on survival rates in non-small-cell lung cancer (NSCLC) patients undergoing neoadjuvant chemotherapy and surgery.
  • A total of 194 cases were analyzed, categorizing patients based on their tumor response and lymph node status, revealing that both MPR and nodal downstaging (ND) contribute positively to overall survival (OS) and disease-free survival (DFS).
  • The findings indicate that patients with both MPR and ND have significantly better survival outcomes compared to those without either, emphasizing the importance of these factors as independent predictors for NSCLC prognosis.
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Purpose: Current variability in methods for tumor mutational burden (TMB) estimation and reporting demonstrates the urgent need for a homogeneous TMB assessment approach. Here, we compared TMB distributions in different cancer types using two customized targeted panels commonly used in clinical practice.

Materials And Methods: TMB spectra of 295- and 1021-gene panels in multiple cancer types were compared using targeted next-generation sequencing (NGS).

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  • This study explores the transcriptome and immune microenvironment of small-cell carcinoma of the esophagus (SCCE) using deep sequencing and compares the findings to normal tissues and other cancers.
  • Key results show significant deregulation in pathways involving cell cycle, p53, and Wnt, alongside immune resistance factors like upregulated immune checkpoints and M2 macrophage infiltration in tumors.
  • The research suggests that some SCCE patients could benefit from immune checkpoint blockade therapy, with a TMB of 3.64 and a 43% PD-L1 positive rate indicating potential for treatment effectiveness.
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  • The study focused on the analysis of molecular markers in 36 patients with primary vaginal melanomas to enhance treatment options and understand the tumors' characteristics.
  • It found that mutations in NRAS, KIT, and TERT promoter were present in a small percentage of cases, with NRAS mutations linked to poorer survival outcomes and PD-L1 expression potentially serving as a therapeutic target.
  • The research utilized techniques like Sanger sequencing and immunohistochemistry, revealing that NRAS mutations and PD-L1 expression are prevalent, indicating their significance in developing new targeted therapies.
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Large-cell lung carcinomas (LCLCs) were reclassified by the World Health Organization 2015 criteria. and remain fairly unknown at the molecular level and targeted-therapeutic options. Data of 184 lung cancer patients were retrieved from clinical records, of which 54 were found to be pathologically diagnosed as LCLC.

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  • The study examines cases of Epstein-Barr virus (EBV)-positive cervical lymph node metastasis categorized as nasopharyngeal carcinoma (NPC) T0, aiming to identify potential primary sites and their management implications.
  • A review of 269 patients revealed the most common primary sites included the nasopharynx, salivary glands, and lungs, with some cases having no identifiable primary source.
  • Findings suggest that EBV-positive CLNs may originate from various locations, not just the nasopharynx, indicating a need for careful consideration in the NPC T0 classification.
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Background: Identification of activated epidermal growth factor receptor (EGFR) mutations and application of EGFR-tyrosine kinase inhibitors (EGFR-TKIs) have greatly changed the therapeutic strategies of non-small-cell lung cancer (NSCLC). However, the long-term efficacy of EGFR-TKI therapy is limited due to the development of drug resistance. The aim of this study was to investigate the correlation between the aberrant alterations of 8 driver genes and the primary resistance to EGFR-TKIs in advanced NSCLC patients with activated EGFR mutations.

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Ras-like without CAAX1 (RIT1) protein is a member of Ras family, which plays critical roles in signaling pathways and cellular process regulation. However, the role of RIT1 in esophageal squamous cell carcinoma (ESCC) is unclear. In this study, we found that the expression of RIT1 is downregulated in ESCC compared to corresponding non-tumor tissues.

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  • - Hydrogen sulfide (HS) influences cancer cell behavior and this study specifically explores its effects on esophageal squamous cell carcinoma (EC109) via the JAK2/STAT3 signaling pathway.
  • - Treatment with HS led to enhanced cell viability and migration, with increased levels of certain proteins indicative of cell growth and survival, while simultaneously decreasing markers associated with cell death.
  • - Co-treatment with AG490, an inhibitor of the JAK2/STAT3 pathway, significantly reduced the positive effects induced by HS, suggesting that this signaling pathway plays a crucial role in HS's impact on EC109 cells.
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Background: The current World Health Organization (WHO) classification of nasopharyngeal carcinoma (NPC) conveys little prognostic information. This study aimed to propose an NPC histopathologic classification that can potentially be used to predict prognosis and treatment response.

Methods: We initially developed a histopathologic classification based on the morphologic traits and cell differentiation of tumors of 2716 NPC patients who were identified at Sun Yat-sen University Cancer Center (SYSUCC) (training cohort).

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Signet-ring cell carcinoma (SRCC) can arise from virtually all organs. However, primary SRCC of the breast is very rare. Until 2003, SRCC was placed under 'mucin-producing carcinomas' and separated from other carcinomas by the World Health Organization (WHO).

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Objective: The aim of this study was to investigate the frequency and clinicopathologic features of nasopharyngeal extranodal NK/T-cell lymphoma, nasal type (NKTCL), as well as DNA sequence variation of Epstein-Barr virus (EBV) in neoplastic cells harboring in NKTCLs from Guangzhou district.

Materials And Methods: The clinical data of 18 unselected consecutive nasopharyngeal NKTCLs in one institution were reviewed retrospectively. Immunohistochemical staining and EBV-encoded RNAs (EBERs) in situ hybridization were applied.

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Background And Objective: Sporadic Burkitt's lymphoma (sBL) is uncommon and its relation to Epstein-Barr virus (EBV) is unknown in China. This study was to investigate the clinical presentation, morphologic features, immunophenotype and EBV infection status of sBL in Guangzhou district, a prevalent area of EBV infection.

Methods: The clinical data of 21 sBL patients were reviewed.

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