OBJECTIVE: To investigate the relationship between the promoter methylation and protein expression of insulin-like growth factor binding protein-related protein 1(IGFBP-rP1) in laryngeal squamous cell carcinoma (LSCC). METHOD: Methylation specific PCR (MSP) approach and immunohistochemistry methods were used to examine the methylation status and protein expression of IGFBP-rP1 in 45 samples of laryngeal carcinoma and 18 samples of tissues beside cancer. RESULT: For the promoter site, methylation frequency of IGFBP-rP1 in tumor specimens (33.3%, 15/45) was significantly higher than that in corresponding normal tissues (5.6%, 1/18) (P < 0.05). The protein expression of IGFBP-rP1 in tumor tissues was significantly higher than that in corresponding normal tissues (P < 0.05) and was inversely correlated with its methylation status of promoter. CONCLUSION Epigenetic silencing of IGFBP-rP1 gene expression by promoter hypermethylation may play an important role in LSCC.
Adenocarcinoma ; genetics ; metabolism ; pathology ; Aged ; DNA Methylation ; Female ; Humans ; Insulin-Like Growth Factor Binding Proteins ; genetics ; metabolism ; Laryngeal Neoplasms ; genetics ; metabolism ; pathology ; Male ; Middle Aged

OBJECTIVE: The purpose of this study was to discuss the role of the combination of carbon nanoparticles and medical imaging to manage the cervical lymph nodes in patients with thyroid carcinoma. METHOD: Eighty one patients with thyroid carcinoma that primary treated were divided into two groups: trial group and control group. Carbon nanoparticles were injected into the thyroid gland of trial group patients. Central compartment (level VI) dissection, levels IIl and IV dissection, lateral node (levels II-V) dissection were performed respectively in all the patients on the basis of medical imaging and pathology. Total lymph nodes, metastasis lymph nodes, black stained lymph nodes and black stained metastasis lymph nodes of trial group were counted respectively in different dissection specimens. Total lymph nodes and metastasis lymph nodes of control group were counted respectively in different dissection specimens. Parathyroid glands of thyroid or central compartment dissection specimens were counted in two groups. RESULT: In trial group, rate of staining lymph node was 80.0% in central neck dissection tissue, 54.9% in levels III and IV dissection specimen, 39.1% in lateral node dissection specimen. In central compartment dissection tissue, lymph nodes on average in control group were less than in trial group (3.03 ± 2.07 vs. 4.72 ± 2.97) (P < 0.01). The same was in levels III and lV dissection specimen (5.53 ± 3.78 vs. 10.29 ± 3.36) (P < 0.01). As for lateral node dissection specimen,there was no statistic difference in the two group (13.4 ± 9.67 vs. 14.56 ± 6.28) (P > 0.05). There was no statistic difference between control group and trial group for the metastasis lymph nodes in difference dissection specimens. Parathyroid gland was found in 3 thyroid or central compartment dissection specimens among trial group, which was found in 9 specimens among control group, the difference had statistical significance (P < 0.05). CONCLUSION During levels III and IV dissection in cN0 patients or central compartment dissection, lymph nodes can be signed well by carbon nanoparticles, which can improve the lymph node detection rate, but can not increase the lymph node detection rate in cN+ patients. Parathyroid gland can be preserved by carbon nanoparticles during the thyroid gland resection and central neck dissection.
Carbon ; administration & dosage ; Diagnostic Imaging ; methods ; Female ; Humans ; Lymph Nodes ; Lymphatic Metastasis ; Male ; Nanoparticles ; administration & dosage ; Neck ; Neck Dissection ; methods ; Parathyroid Glands ; Staining and Labeling ; Thyroid Neoplasms ; diagnosis ; pathology ; Thyroidectomy

OBJECTIVE: To evaluate the role of the combination of ultrasound and enhanced CT in analyzing lymph node metastasis in thyroid papillary carcinoma (PTC) patients by compartment. METHOD: Clinical data of 115 cases (141 sides) with PTC were collected. All had undergone ultrasound in neck and enhanced CT both in neck and in mediastinum before surgery. They were divided into ultrasound group. CT group, and the combination of ultrasound and enhanced CT group to evaluate lymph node metastasis. RESULT: For the central compartment, the accuracy of ultrasound was 61.0%. CT was 48.9%, and the combination of ultrasound and CT was 62.4%. For the lateral compartment, ultrasound was 87.9%, CT was 78.7%, the combination of ultrasound and CT was 85.8%. Ultrasound had higher accuracy than CT in the central (P < 0.05) and lateral (P < 0.05) compartment. The combination of ultrasound and CT had higher accuracy than CT in the central compartment (P < 0.05), but there was no significant difference in the lateral compartment (P > 0.05). There was no significant difference in accuracy between ultrasound and the combination of ultrasound and CT neither in central (P > 0.05) nor in lateral (P > 0.05) compartment. Six cases of lymph node metastasis in mediastinum and 1 case in parapharyngeal space detected by CT were pathologically proven. CT found that five patients with pulmonary metastasis. CONCLUSION The combination of ultrasound and CT or single ultrasound has higher accuracy in preoperative evaluation than single CT for lymph node metastasis in PTC. CT can assess some compartments such as mediastinum which can't be detected by ultrasound, and at the same time to evaluate lung metastasis. To evaluate lymph node metastasis in PTC, the combination of ultrasound and CT is more accurate and considerate than single method.
Adolescent ; Adult ; Aged ; Carcinoma ; diagnostic imaging ; pathology ; Carcinoma, Papillary ; Child ; Female ; Humans ; Lymphatic Metastasis ; diagnostic imaging ; Male ; Middle Aged ; Thyroid Cancer, Papillary ; Thyroid Neoplasms ; diagnostic imaging ; pathology ; Tomography, X-Ray Computed ; Ultrasonography, Doppler, Color ; Young Adult

[摘 要] 目的：探究SOX9通过上调长链非编码RNA LINC01503的表达对喉鳞状细胞癌（LSCC）细胞的增殖、迁移、侵袭及肿瘤干细胞干性的影响。方法： 常规培养人LSCC细胞AMC-HN-8、TU177、TU212和TU686，用转染试剂将敲减序列及其对照核酸（si-SOX9-NC、si-SOX9#1、 si-SOX9#2、si-LINC01503-NC、si-LINC01503#1、si-LINC01503#2）或过表达质粒及其对照核酸（pcDNA3.1-SOX-NC、pcDNA3.1-SOX-oe、pcDNA3.1-LIN01503-NC和pcDNA3.1-LIN01503-oe）分别转染至TU177细胞或TU686细胞，记为si-SOX9-NC组、si-SOX9#1组、si-SOX9#2组、si-LINC01503-NC组、si-LINC01503#1组、si-LINC01503#2组；pcDNA3.1-SOX9-NC组、pcDNA3.1-SOX9-oe组、pcDNA3.1-LINC01503-NC组、pcDNA3.1-LINC01503-oe组、si-SOX9-NC + pcDNA3.1-LINC01503-NC组和si-SOX9 + pcDNA3.1-LINC01503-oe组。qPCR法检测SOX9 mRNA和LINC01503 在各组细胞中的表达，生物信息学分析SOX9与LINC0503启动子区的结合位点，双萤光素酶报告基因实验和染色质免疫共沉淀实验验证SOX9与LINC01503启动子区是否直接结合，WB法检测SOX9的敲减效率及LINC01503对TU177和TU686细胞干性标志物表达的影响，MTS法检测各组细胞的增殖活力，划痕愈合和Transwell小室实验检测各组细胞的迁移能力，克隆形成实验检测各组细胞的克隆形成能力。结果：SOX9在各种LSCC细胞中呈高表达（均P < 0.05），数据库数据分析显示，在头颈部鳞状细胞癌中，SOX9与LINC01503表达呈正相关（R = 0.12，P = 0.005 9）；SOX9可与LINC01503启动子区直接结合并促进其转录表达（均P < 0.05）；敲减LINC01503可明显抑制TU177细胞的增殖、迁移、侵袭（均P < 0.05），过表达LINC01503明显促进TU686细胞增殖、迁移、侵袭的能力（均P < 0.05），提高TU686细胞克隆形成能力和细胞干性标志物分子CD133、OCT4、SOX2的mRNA和蛋白水平表达（均P < 0.05），敲减LINC01503则均可抑制TU686细胞的克隆形成和细胞干性标志物的表达（均P < 0.05）；敲减SOX9均可明显抑制TU177细胞的增殖、迁移和侵袭能力，降低其干性细胞标志物的表达（均P < 0.05），同时过表达LINC01503则可部分逆转敲减SOX9对TU177细胞恶性生物学行为和干性标志物表达的抑制作用（均P < 0.05）。结论：SOX9和LINC01503在LSCC细胞中呈高表达，SOX9可能通过上调LINC01503表达提高LSCC细胞增殖、转移和侵袭能力和肿瘤干细胞干性。