Publications by authors named "Luo Dingyuan"

Background: The value of magnetic resonance imaging (MRI) presentation of primary lower extremity lymphedema in assessing the severity of lower extremity lymphedema is uncertain. The purpose of this study was to assess the role of MRI presentation in staging primary lower extremity lymphedema.

Methods: We enrolled 228 patients with clinically diagnosed primary lower limb lymphoedema from January 2018 to December 2019 in our hospital retrospectively.

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Thyroid cancer is the most common malignancy of the endocrine system, and its outcome remains unsatisfactory. In recent years, circular RNAs (circRNAs) have emerged as crucial regulators in cancers. In the current study, we aimed to investigate whether and how circRNA_0057209 functioned in thyroid cancer.

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Novel therapeutic strategies are needed in the fight against pancreatic cancer. We have previously documented the chemopreventive effect of MDC-22 in preclinical models of pancreatic cancer. In the present work, we examined the therapeutic effects of MDC-22 in patient-derived tumor xenografts (PDTXs) and in LSL-Kras LSL-Trp53 Pdx1-Cre (KPC) genetically engineered mice, two complementary and clinically relevant animal models of pancreatic cancer.

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Context: Abnormally high expression of N6-methyladenosine (m6A) methyltransferase-like 3 (METTL3) has been implied to accompany thyroid carcinoma (TC) development.

Objective: This study aimed to explore the protumorigenic role and downstream signaling axis of METTL3 in TC.

Methods: This study was conducted at the Sun Yat-Sen Memorial Hospital Sun Yat-Sen University.

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Purpose: The present study aimed to identify differentially expressed circRNAs in thyroid cancer and verify their potential functions.

Methods: Next-generation sequencing was used to identify differentially expressed circRNAs between papillary thyroid carcinoma (PTC) tissues and paired pericarcinomatous tissues. Polymerase chain reaction and Sanger sequencing methods successfully identified hsa_circ_0007694.

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Context: Lysine-specific demethylase 1 (LSD1) stabilizes hypoxia-inducible factor 1α (HIF1α) to advance tumor progression, while HIF1α functions as a transcription factor to increase the expression of microRNA-146a (miR-146a).

Objective: We aim to investigate whether LSD1 affects the development of papillary thyroid carcinoma (PTC) via HIF1α and miR-146a.

Design: In vitro assays were performed with Nthy-ori 3-1, BHP5-16, BCPAP, K1, and BHP2-7 cell lines.

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The role of long non-coding RNAs (lncRNAs) in thyroid carcinoma (TC), the most frequent endocrine malignancy, has been extensively examined. This study investigated effect of interaction among lncRNA TNRC6C-AS1, serine/threonine-protein kinase 4 (STK4) and Hippo signalling pathway on TC. Initially, lncRNA TNRC6C-AS1 expression in TC tissues was detected.

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Article Synopsis
  • New chemotherapeutic agents, like phospho-valproic acid (MDC-1112), show promise for treating pancreatic cancer and have been effective in various animal models.
  • MDC-1112 significantly inhibits tumor growth and enhances the effectiveness of standard chemotherapy drugs like gemcitabine, Abraxane, and 5-FU, while it has limited efficacy with irinotecan.
  • Combining MDC-1112 with gemcitabine achieves a remarkable 94% reduction in tumor growth in xenograft models, suggesting it may be a valuable option in pancreatic cancer treatment.
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Purpose: Papillary thyroid carcinoma (PTC) is the most common endocrine malignancy, and its incidence has continuously increased in recent years. Therefore, it is essential to develop more useful therapeutic strategies.

Methods: We collected 56 pairs of PTC tissues and adjacent normal tissues and determined the expression patterns of linc01278, miR-376c-3p and DNM3.

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New therapeutic strategies against glioblastoma multiforme (GBM) are urgently needed. Signal transducer and activator of transcription 3 (STAT3), constitutively active in many GBM tumors, plays a major role in GBM tumor growth and represents a potential therapeutic target. We have documented previously that phospho-valproic acid (MDC-1112), which inhibits STAT3 activation, possesses strong anticancer properties in multiple cancer types.

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Papillary thyroid carcinoma (PTC) is a type of cancer with one of the fastest increasing incidences worldwide. However, the therapeutic choices for PTC patients are limited and it is critical to further understand the molecular pathology underlying this disease. Squamous cell carcinoma antigens (SCCAs) are overexpressed in many tumors and participate in tumorigenesis.

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Glioblastoma multiforme (GBM) is the most common primary malignant tumor affecting the human brain. Despite improvements in therapeutic technologies, patients with GBM have a poor clinical result and the molecular mechanisms responsible for the development of GBM have not yet been fully elucidated. 3-phosphoinositide dependent protein kinase 1 (PDK1) is upregulated in various tumors and promotes tumor invasion.

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Rho-associated protein kinase 1 (ROCK1), a serine/threonine kinase, has previously been shown to be over-expressed in various types of human malignant tumors and to play an important role in cancer development and progression. Although ROCK1 has gained growing prominence as an important protein kinase in cancer biology, its potential as a predictive biomarker and a therapeutic target in papillary thyroid carcinoma (PTC) remains unknown. In the present study, ROCK1 expression was examined in 356 formalin-fixed, paraffin-embedded papillary thyroid carcinoma tissues using immunohistochemistry, and its clinical implications and prognostic significance were analyzed.

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Objective: This research was aimed to investigate whether the intraoperative nerve monitoring (IONM) can reduce the incidence of recurrent laryngeal nerve (RLN) injury in geriatric patients undergoing thyroid surgery.

Methods: This retrospective cohort study included 522 geriatric patients undergoing thyroid surgery between January 2013 and June 2016 in the Sun Yat-sen Memorial Hospital. Patients with IONM during the surgery (n = 340) were compared with patients without IONM (n = 212).

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Dedifferentiated papillary thyroid cancer (DePTC) is characterized by aggressive growth, recurrence, distant metastasis, and resistance to radioactive iodine (RAI) therapy. DePTC is also accompanied by poor prognosis and high early-mortality. Nevertheless, most DePTC cells show intact p53 downstream functionality.

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Glioma is the most common and aggressive human primary tumor in the central nervous system. Despite present clinical advancements, median survival time remains poor in this malignant tumor. Serpin peptidase inhibitor, clade A member 3 (SERPINA3), is a member of the serpin superfamily of protease inhibitors.

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Objective: In this study, we examined the relationships between the expression level of CHI3L1 and the clinicopathological characteristics of papillary thyroid carcinoma.

Methods: A total of 322 tissue samples from patients with papillary thyroid carcinoma were collected, and the CHI3L1 expression levels in tumor tissues, matched adjacent noncancerous tissues were detected using immunohistochemistry (IHC) and qRT-PCR. The relationships between CHI3L1 expression levels and the clinical characteristics were evaluated.

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The study assessed the role of an activated carbon nanoparticle lymphatic tracer in reducing unintentional damage to the parathyroid glands during thyroidectomy for papillary thyroid non-microcarcinoma diagnosed intraoperatively by cryosections. A total of 103 patients with papillary thyroid non-microcarcinomas diagnosed by intraoperative cryosection were randomly assigned to receive routine radical thyroidectomy or radical thyroidectomy following administration of activated carbon nanoparticle lymphatic tracer to the contralateral thyroid, at the department of Thyroid Surgery, Sun Yat-sen Memorial Hospital (Guangzhou, China), between January 2012 and May 2013. The success of level VI lymphadenectomy and postoperative parathyroid function were compared.

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This study investigated the expression and role of chemokine receptor-4 (CXCR4) in bone marrow mesenchymal stem cells (BMSCs) from experimental rats with abdominal aortic aneurysms (AAA) for migration of BMSCs. Sprague-Dawley rats were divided into an experimental group and control group (n = 18 each). AAA was induced with 0.

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Background: High expression of aldehyde dehydrogenase 1 (ALDH1) has been confirmed in many tumors. This enzyme plays an important role in tumor proliferation, metastasis, and drug resistance. However, in the case of papillary thyroid carcinoma (PTC), the relationship between ALDH1 expression and prognosis remains unknown.

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Objective: To investigate the hypothesis that injected carbon nanoparticle (CN) suspension helps identify parathyroid glands (PGs) during thyroid cancer surgery, thereby reducing PG injury.

Study Design: A prospective, randomized controlled trial. Setting Sun Yet-san Memorial Hospital, Guangzhou, China.

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