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https://www.readbyqxmd.com/read/28454483/efficient-carrier-injection-transport-relaxation-and-recombination-associated-with-a-stronger-carrier-localization-and-a-low-polarization-effect-of-nonpolar-m-plane-ingan-gan-light-emitting-diodes
#1
Fann-Wei Yang, Yu-Siang You, Shih-Wei Feng
Based on time-resolved electroluminescence (TREL) measurement, more efficient carrier injection, transport, relaxation, and recombination associated with a stronger carrier localization and a low polarization effect in a nonpolar m-plane InGaN/GaN light emitting diode (m-LED), compared with those in a polar c-LED, are reported. With a higher applied voltage in the c-LED, decreasing response time and rising time improve device performance, but a longer recombination time degrades luminescence efficiency. By using an m-LED with a stronger carrier localization and a low polarization effect, shorter response, rising, and recombination times provide more efficient carrier injection, transport, relaxation, and recombination...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454474/incidence-trends-in-high-grade-primary-brain-tumors-in-males-and-females
#2
Jonas Nilsson, Georg Holgersson, Tobias Carlsson, Roger Henriksson, Stefan Bergström, Michael Bergqvist
The focus of the present review is to investigate whether there is a variation in the incidence rates between male and female patients with high-grade primary brain tumors and if there are altered incidence rates associated with the time at which they were diagnosed. Previous studies identified in internationally peer-reviewed journals were identified using a systematic search of the PubMed database. Due to the difficulties in data interpretation, studies that exclusively included patient data classified prior to the 2nd edition of the World Health Organization histological classification system of brain tumors were excluded...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454465/microarray-based-analysis-of-gene-regulation-by-mesenchymal-stem-cells-in-breast-cancer
#3
Ming Zhang, Chang E Gao, Wen Hui Li, Yi Yang, Li Chang, Jian Dong, Yan Xin Ren, De Dian Chen
Breast cancer is one of the most common malignant tumors with a high case-fatality rate among women. The present study aimed to investigate the effects of mesenchymal stem cells (MSCs) on breast cancer by exploring the potential underlying molecular mechanisms. The expression profile of GSE43306, which refers to MDA-MB-231 cells with or without a 1:1 ratio of MSCs, was downloaded from Gene Expression Omnibus database for differentially expressed gene (DEG) screening. The Database for Annotation, Visualization and Integrated Discovery was used for gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis for DEGs...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454462/effects-of-irradiation-on-radioresistance-hotair-and-epithelial-mesenchymal-transition-cancer-stem-cell-marker-expression-in-esophageal-squamous-cell-carcinoma
#4
Chunli Da, Li Wu, Yuting Liu, Ruozheng Wang, Ruiguang Li
Radiotherapy is a common therapeutic strategy used to treat esophageal squamous cell carcinoma (ESCC). However, tumor cells often develop radioresistance, thereby reducing treatment efficacy. Here, we aimed to identify the mechanisms through which ESCC cells develop radioresistance and identify associated biomarkers. Eca109 cells were exposed to repeated radiation at 2 Gy/fraction for a total dose of 60 Gy (Eca109R60/2Gy cells). MTT and colony formation assays were performed to measure cell proliferation and compare the radiation biology parameters of Eca109 and Eca109R60/2Gy cells...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454454/chemotherapy-regimen-based-on-sorafenib-combined-with-5-fu-on-hif-1%C3%AE-and-vegf-expression-and-survival-in-advanced-gastric-cancer-patients
#5
Ronghui Cheng, Hongmei Yong, Yunhong Xia, Qingsong Xie, Guangyi Gao, Xueyi Zhou
The present study investigated the effect of combined sorafenib chemotherapy on hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) expression and survival time of patients with advanced gastric cancer. From January 2010 to December 2011, 92 patients diagnosed with advanced gastric cancer were selected and randomly divided into the treatment group and control group. The treatment group was treated with sorafenib chemotherapy combined with 5-fluorouracil (5-FU), and the control group received 5-FU...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454447/inhibitory-effect-and-mechanism-of-exogenous-mammalian-sterile-20-like-kinase-1-on-the-growth-of-human-colorectal-cancer
#6
Jian Wu, Xiaohong Yang, Hongfei Lu, Liqiao Liu, Baohua Xu, Shuangyan Zheng, Bo Yu, Kemin Jie, Fusheng Wan
The present study aimed to observe the inhibitory effect and preliminary mechanism of exogenous mammalian sterile 20-like kinase 1 (MST1) on the growth of colorectal cancer SW480 cells. The SW480 cells were randomly divided into the following groups: Control, empty enhanced green fluorescent protein (EGFP) plasmid (pEGFP-N1), MST1 EGFP plasmid (pEGFP-MST1), 20 µmol/l fluorouracil (5-FU) and pEGFP-MST1 + 5-FU. An MTS colorimetric assay was used to detect cell viability, Hoechst 33342 staining was used to observe cell apoptosis, and western blotting and immunohistochemistry were used to detect the levels of the proteins MST1, yes-associated protein (YAP), phospho-YAP1 (Ser127), p53 and p53 upregulated modulator of apoptosis (PUMA)...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454441/microrna-130b-promotes-cell-migration-and-invasion-by-inhibiting-peroxisome-proliferator-activated-receptor-%C3%AE-in-human-glioma
#7
Peidong Li, Xinjun Wang, Qiao Shan, Yuehui Wu, Zhen Wang
Glioma is the most common and aggressive type of primary brain tumor. MicroRNA (miR)-130b functions as a tumor-associated miR. The dysregulation of miR-130b is involved in numerous biological characteristics and properties of certain types of cancer. The present study revealed the function and possible molecular mechanism of miR-130b in glioma cells, reporting that the level of miR-130b was markedly higher, increasing progressively as the histologic grade of the glioma increased, compared with the level in normal tissues...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454435/15-deoxy-%C3%AE-12-14-prostaglandin-j2-inhibits-migration-of-human-thyroid-carcinoma-cells-by-disrupting-focal-adhesion-complex-and-adherens-junction
#8
Ya-Chieh Wu, Yun-Ting Jhao, Yu-Chen Cheng, Ying Chen
Metastasis is frequently observed in human follicular thyroid carcinoma. The present study investigated the peroxisome proliferator-activated receptor γ agonist, 15-deoxy-Δ(12,14)-prostaglandin J(2) (15d-PGJ2), and its effect on the migration of CGTH W-2 human thyroid carcinoma cells. 15d-PGJ2 decreased the survival rate of CGTH W-2 cells in a dose-dependent manner. The Transwell migration assay demonstrated that 15d-PGJ2 reduced the migration rate of CGTH W-2 cells by 35% following treatment with 30 µM 15d-PGJ2 compared with control cells...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454434/f10-a-novel-hydatidiform-mole-associated-gene-inhibits-the-paclitaxel-sensitivity-of-a549-lung-cancer-cells-by-downregulating-bax-and-caspase-3
#9
Yali Song, Wei Cao, Xi Zhu, Zhuolin Qiu, Xiaoping Yang, Jing Liu, Ruoting Xu, Weizhuang Yuan, Song Quan
F10 is a novel hydatidiform mole (HM)-associated gene that was initially identified during a study into the pathogenesis of HMs. However, the role of the F10 gene requires further investigation. Our, previous studies have indicated that F10 may be involved in the malignant transformation of HMs and the development of certain types of adenocarcinoma, and that the overexpression of F10 may lead to excessive proliferation and decreased apoptosis of A549 cells. The present study aimed to investigate whether F10 may suppress the sensitivity of A549 lung cancer cells to paclitaxel therapy...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454432/prognostic-and-predictive-role-of-cox-2-xrcc1-and-rassf1-expression-in-patients-with-esophageal-squamous-cell-carcinoma-receiving-radiotherapy
#10
Yaowen Zhang, Shangwen Dong, Ruiping Xu, Yanping Yang, Zhiyong Zheng, Xiaojing Wang, Runchuan Ren, Ronggang Sun, Ming Li, Haijun Yang, Yuting Huang, Fuyou Zhou, Anping Zheng
Identification of biomarkers for predicting radiosensitivity would be useful for administering individualized radiotherapy (RT) to patients with esophageal cancer. The aim of the present study was to evaluate the association between cyclooxygenase-2 (COX-2), X-ray repair cross complementing group 1 (XRCC1), ras association domain family 1 (RASSF1) protein expression, clinicopathological characteristics, radiosensitivity and survival rate in 76 patients with esophageal squamous cell carcinoma (ESCC) who were treated with RT...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454427/chemoresistance-in-pancreatic-cancer-emerging-concepts
#11
Manu Gnanamony, Christopher S Gondi
Pancreatic cancer is one of the most lethal types of cancer in the world. The incidence of pancreatic cancer increases each year with no significant decrease in mortality. Pancreatic cancer is a complex disease, and this complexity is partly attributed to late diagnosis, an aggressive phenotype, environmental factors and lack of effective treatment options. Surgical resection followed by adjuvant chemotherapy is the treatment of choice for early stage cancer, whereas gemcitabine is the standard first line therapy for patients with advanced stage disease...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454417/mir-185-enhances-the-inhibition-of-proliferation-and-migration-induced-by-ionizing-radiation-in-melanoma
#12
Jinpeng He, Ning Tian, Yanli Yang, Liangliang Jin, Xiu Feng, Junrui Hua, Sulan Lin, Bing Wang, He Li, Jufang Wang
Melanoma is an aggressive malignancy that is increasingly common and exhibits a poor patient survival rate. Radiotherapy is the primary option for patients with melanoma, particularly those who are not candidates for surgery; however, the therapeutic effect is limited due to the relative radioresistance of melanoma to ionizing radiation (IR). It has been reported that microRNAs (miRNAs) serve a vital role in determining the radiosensitivity of tumors; however, little is known concerning the radiosensitization of melanoma using miRNA...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454409/expression-of-imp3-as-a-marker-for-predicting-poor-outcome-in-gastroenteropancreatic-neuroendocrine-neoplasms
#13
Li-Mian Er, Yong Li, Ming-Li Wu, Qun Zhao, Bi-Bo Tan, Xiao-Ling Wang, Shi-Jie Wang
The aim of the present study was to investigate the expression and clinical significance of oncofetal protein insulin-like growth factor (IGF) II mRNA-binding protein 3 (IMP3) in the differentiation of gastroenteropancreatic neuroendocrine neoplasm (GEP-NEN). A total of 162 patients who were diagnosed with GEP-NEN, and who underwent surgical or endoscopic resection from January 2006 to March 2013, were enrolled in the study, including 85 cases of grade (G)1 neuroendocrine tumors, 40 cases of G2 neuroendocrine tumors, 28 cases of G3 neuroendocrine carcinomas and 9 cases of mixed stage adenoneuroendocrine carcinomas...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454404/correlation-between-epidermal-growth-factor-receptor-mutations-and-the-expression-of-estrogen-receptor-%C3%AE-in-advanced-non-small-cell-lung-cancer
#14
Fang Deng, Ming Li, Wu-Lin Shan, Li-Ting Qian, Shui-Ping Meng, Xiao-Lei Zhang, Bao-Long Wang
Epidermal growth factor receptor (EGFR) mutations are more common in non-small cell lung cancer (NSCLC) and in female patients of East Asian origin. Therefore, the present study investigated the presence of EGFR mutations in advanced NSCLC, and assessed its correlation with clinicopathologic factors, including the expression of estrogen receptor-β (ER-β) and patient prognosis. The present study performed a retrospective analysis of 83 patients with stage IIIB-IV NSCLC. The expression of ER-β and p53 were examined using immunohistochemical methods...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454401/safety-and-effectiveness-of-localized-lung-resection-combined-with-neoadjuvant-chemotherapy-in-the-treatment-of-stage-i-ii-non-small-cell-lung-cancer
#15
Bing Zhu, Jianru Yang, Pei Zhang, Lin Shen, Xiaolong Li, Jing Li
This study was conducted to evaluate the safety and effectiveness of localized lung resection combined with neoadjuvant chemotherapy in the treatment of stage I-II non-small cell lung cancer (NSCLC). A total of 88 patients, who were admitted to our hospital for first diagnosis and treatment, were selected. The patients were divided into control group (n=40 cases) and observation group (n=48 cases) according to the last digit of the admission number. The control group was treated with minimally invasive localized lung resection by thoracoscope...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454400/stevioside-induced-cytotoxicity-in-colon-cancer-cells-via-reactive-oxygen-species-and-mitogen-activated-protein-kinase-signaling-pathways-mediated-apoptosis
#16
Hai-Peng Ren, Xiao-Yan Yin, Hai-Ying Yu, Hai-Feng Xiao
The role of mitogen-activated protein kinase (MAPK) signaling pathways in cell growth and differentiation has been well established. The present study aimed to investigate the anti-proliferative effect of stevioside on human colon cancer HT-29 cells. Additionally, the effect of stevioside on cell cycle arrest and MAPK signaling pathways in HT-29 cells was explored. Stevioside was observed to significantly inhibit cancer cell growth at a dose of 5 µM at 48 and 72 h. A dose-dependent increase in the apoptosis rate was observed with cell cycle arrest at G2/M phase...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454397/sphingosine-kinase-1-a-novel-independent-prognosis-biomarker-in-hepatocellular-carcinoma
#17
Huajie Cai, Xuemeng Xie, Ling Ji, Xiaojiao Ruan, Zhihai Zheng
Sphingosine kinase 1 (Sphk1) is an oncogenic kinase that is responsible for the phosphorylation of sphingosine to sphingosine-1-phosphate (S1P). Mounting evidence suggests that Sphk1 serves a crucial role in the proliferation and development of a variety of human cancer cells. However, the role of Sphk1 in hepatocellular carcinoma (HCC) has not been fully elucidated. Therefore, the expression of Sphk1 was examined in 127 formalin-fixed, paraffin-embedded HCC tissues using immunohistochemistry, and its clinical implications and prognostic significance were analyzed...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454393/diagnosing-and-discriminating-between-primary-and-secondary-aneurysmal-bone-cysts
#18
Hiromi Sasaki, Satoshi Nagano, Hirofumi Shimada, Masahiro Yokouchi, Takao Setoguchi, Yasuhiro Ishidou, Osamu Kunigou, Kosuke Maehara, Setsuro Komiya
Aneurysmal bone cysts (ABCs) are benign bony lesions frequently accompanied by multiple cystic lesions and aggressive bone destruction. They are relatively rare lesions, representing only 1% of bone tumors. The pathogenesis of ABCs has yet to be elucidated. In the present study, a series of 22 cases of primary and secondary ABC from patients treated in Department of Orthopedic Surgery, Kagoshima University Hospital (Kagoshima, Japan) from 2001-2015 were retrospectively analyzed. The average age at the time of diagnosis of primary ABC was 17...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454388/cxcr4-knockdown-inhibits-the-growth-and-invasion-of-nasopharyngeal-cancer-stem-cells
#19
Yuan Tian, Yan Song, Weiliang Bai, Xiulan Ma, Zhong Ren
Nasopharyngeal cancer is a type of malignant tumor with a high rate of incidence. Cancer stem cells are regarded as one of the main causes for the formation and recurrence of nasopharyngeal cancer. CXC chemokine receptor type 4 (CXCR4) has been reported to perform an important role in cancer; however, the association between CXCR4 and nasopharyngeal cancer stem cells remains unclear. The present study explored the effect of CXCR4 on cellular viability, apoptosis and invasion of nasopharyngeal cancer stem cells...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454387/association-between-wnt-inhibitory-factor-1-and-receptor-tyrosine-kinase-like-orphan-receptor-2-protein-expression-and-the-clinical-pathological-significance-in-benign-and-malignant-pancreatic-lesions
#20
Daoqi Zhu, Zhulin Yang, Ziru Liu, Qiong Zou, Yuan Yuan, Chunhong Hu
Pancreatic cancer is one of the most malignant types of tumor. It is important to elucidate the underlying molecular mechanisms of pancreatic tumorigenesis and to identify novel biomarkers as therapeutic targets of pancreatic cancer. In the present study, the protein expression levels of Wnt inhibitory factor 1 (WIF1) and receptor tyrosine kinase-like orphan receptor 2 (ROR2) were examined in a collection of pancreatic ductal carcinoma and benign pancreatic lesion tissue samples using immunohistochemistry. The positive expression rate of WIF1 protein in pancreatic ductal carcinoma was demonstrated to be significantly decreased compared with that of the paracancerous tissue, benign lesions and wild-type pancreatic tissue (P=0...
April 2017: Oncology Letters
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