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International Journal of Biological Markers

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https://www.readbyqxmd.com/read/28708205/mir-411-functions-as-a-tumor-suppressor-in-renal-cell-cancer
#1
Xintao Zhang, Meng Zhang, Jianli Cheng, Zhaojie Lv, Feng Wang, Zhiming Cai
BACKGROUND: Recent studies have revealed that microRNAs (miRNAs) play important roles as oncogenes or tumor suppressors in tumorigenesis and tumor development, by negatively regulating protein expression. A previous study of microarrays identified that miR-411 was down-regulated in renal cell carcinoma (RCC), while few studies investigating the role of miR-411 in the pathogenesis of RCC have been performed. METHODS: We assessed the miR-411 expression in RCC and paired adjacent normal tissues, as well as in RCC cell lines and a normal renal cell line, by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR)...
July 11, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28708208/relationship-between-clinical-toxicities-and-ercc1-rs3212986-and-xrcc3-rs861539-polymorphisms-in-cervical-cancer-patients
#2
Sílvia Soares, Augusto Nogueira, Ana Coelho, Joana Assis, Deolinda Pereira, Isabel Bravo, Rui Medeiros
BACKGROUND: Several studies have suggested that there are single nucleotide polymorphisms (SNPs) that can be considered potential biomarkers in the prognosis and therapeutic response of cancer patients. The present study investigated the association between ERCC1 rs3212986 and XRCC3 rs861539 polymorphisms and clinical toxicities induced by chemoradiotherapy (CRT) in cervical cancer. METHODS: This hospital-based retrospective cohort study included 260 patients with cervical cancer, FIGO stages Ib2-IVa, who underwent CRT (cisplatin)...
July 8, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28708207/variations-in-transrenal-dna-and-comparison-with-plasma-dna-as-a-diagnostic-marker-for-colorectal-cancer
#3
Fang Tian, Yuanfang Liao, Yanfang Zhang
BACKGROUND: Transrenal DNA can potentially be useful in the disease management of colorectal cancer (CRC) and has potential diagnostic utility. Our study aimed to conduct preoperative and postoperative analysis of KRAS-positive patients, using transrenal DNA compared with plasma DNA. This is critically needed for disease diagnostics and treatment response monitoring. METHODS: CRC patients at different stages of the disease and with different molecular profiles were recruited for serial time-point analysis...
July 8, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28708206/iqgap1-silencing-suppresses-the-malignant-characteristics-of-laryngeal-squamous-cell-carcinoma-cells
#4
Xiaoxia Wang, Chun He, Chaohui Li, Benhong Ren, Qing Deng, Wei Gao, Binquan Wang
BACKGROUND: Laryngeal squamous cell carcinoma (LSCC) has a poor prognosis due to recurrence and metastasis. IQ-domain GTPase-activating protein 1 (IQGAP1), a scaffold protein, plays an important role in tumorigenesis and malignant development. In this study, we aimed to explore the role of IQGAP1 in LSCC. METHODS: Expression of IQGAP1 in human LSCC specimens was assessed by immunohistochemistry. We also evaluated the roles of IQGAP1 in cell proliferation, migration and invasion and epithelial-to-mesenchymal transition (EMT) in Hep-2 cells...
July 8, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28665451/discordance-in-ras-mutations-between-primary-colon-tumor-and-metastases-a-real-event-or-a-matter-of-methodology
#5
Alfonso De Stefano, Mario Rosanova, Umberto Malapelle, Maurizio Martini, Stefano De Falco, Laura Attademo, Giovanni Fiore, Tonia Cenci, Claudio Bellevicine, Sabino De Placido, Giancarlo Troncone, Chiara Carlomagno
BACKGROUND: Analysis of K- and N-RAS mutations is mandatory before planning treatment of metastatic colorectal cancer, because only RAS wild-type (WT) patients can benefit from treatment with anti-EGFR monoclonal antibodies (cetuximab and panitumumab). CASE REPORT: Here we report the case of a 69-year-old male patient affected by metastatic sigmoid cancer. He underwent left hemicolectomy, and histology diagnosed a well-differentiated, pT4, node-positive adenocarcinoma; KRAS analysis performed with direct sequencing identified a mutation in exon 2 of the KRAS gene (GGT->GTT)...
June 20, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28665452/genetic-polymorphisms-of-vitamin-d-metabolism-genes-and-serum-level-of-vitamin-d-in-colorectal-cancer
#6
Verônica Marques Vidigal, Pedro Nazareth Aguiar Junior, Tiago Donizetti Silva, Juliana de Oliveira, Célia Aparecida Marques Pimenta, Aledson Vitor Felipe, Nora Manoukian Forones
BACKGROUND: The metabolism of vitamin D is complex, its receptor (VDR) and proteins encoded by the genes CYP27B2 and CYP24A1 can influence vitamin D serum levels. The aim of this study was to investigate the relationship of the polymorphisms of VDR (ApaI and BsmI), CYP27B1 and CYP24A1 with serum vitamin D levels in both forms, 25(OH)D3 (circulating form) and 1,25(OH)2D3 (active form), in colorectal cancer (CRC) patients. METHODS: One hundred fifty-two CRC patients and 321 controls were included...
June 19, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28665450/predicting-mirna-targets-for-head-and-neck-squamous-cell-carcinoma-using-an-ensemble-method
#7
Hong Gao, Hui Jin, Guijun Li
BACKGROUND: This study aimed to uncover potential microRNA (miRNA) targets in head and neck squamous cell carcinoma (HNSCC) using an ensemble method which combined 3 different methods: Pearson's correlation coefficient (PCC), Lasso and a causal inference method (i.e., intervention calculus when the directed acyclic graph (DAG) is absent [IDA]), based on Borda count election. METHODS: The Borda count election method was used to integrate the top 100 predicted targets of each miRNA generated by individual methods...
June 19, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28665449/high-expression-of-il-4r-enhances-proliferation-and-invasion-of-hepatocellular-carcinoma-cells
#8
Changkuo Guo, Yuming Ouyang, Jing Cai, Le Xiong, Yajie Chen, Xiaoli Zeng, Anwen Liu
OBJECTIVE: In this study, we aimed to investigate the expression and function of interleukin-4 receptor (IL-4R) in hepatocellular carcinoma (HCC). METHODS: We collected 40 pairs of human HCC and adjacent normal tissue specimens and examined the expression levels of IL-4R. After IL-4R knockdown in HCC cell lines, cell proliferation and invasion ability were examined. Cell cycle and apoptosis were analyzed by flow cytometry. The activity of multiple signaling pathways was examined by Western blot...
June 15, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28623645/psmb5-is-associated-with-proliferation-and-drug-resistance-in-triple-negative-breast-cancer
#9
Wensong Wei, Yufeng Zou, Qihua Jiang, Zhibin Zhou, Haolong Ding, Liping Yan, Shixin Yang
BACKGROUND: Triple-negative breast cancer (TNBC) is the most aggressive subtype of breast cancer, characterized by advanced disease stage and poor prognosis. Moreover, due to the lack of therapeutic markers, TNBC patients can't benefit fully from currently available targeted therapies. METHODS: To fully understand the molecular basis of TNBC, we used gene set enrichment analysis (GSEA) to screen out the most altered functional module in TNBC, from publicly available microarray data and studied the association of the candidate gene with TNBC development...
June 15, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28623644/increased-aaa-tob3-correlates-with-lymph-node-metastasis-and-advanced-stage-of-lung-adenocarcinoma
#10
Yanfeng Liu, Lina Bu, Wei Li, Wei Wu, Shengyu Wang, Xin Diao, Jing Zhou, Guoan Chen, Shuanying Yang
BACKGROUND: This study was to investigate the differential mitochondrial protein expressions in human lung adenocarcinoma and provide preliminary data for further exploration of the carcinogenic mechanism. METHODS: Total proteins of A549 and 16HBE mitochondria were extracted through 2D polyacrylamide gel electrophoresis (2-DE). The differential mitochondria proteins were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and were further confirmed by Western blot, immunoelectron microscopy and immunohistochemistry (IHC) in A549 cells as well as lung adenocarcinoma tissues...
June 15, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28604994/epcam-expressing-circulating-tumor-cells-in-colorectal-cancer
#11
Chiara Nicolazzo, Cristina Raimondi, Federica Francescangeli, Simona Ceccarelli, Patrizia Trenta, Valentina Magri, Cinzia Marchese, Ann Zeuner, Angela Gradilone, Paola Gazzaniga
BACKGROUND: Several studies have raised the issue of the inadequacy of CellSearch® to detect the entire pool of circulating tumor cells (CTCs) from blood of cancer patients, suggesting that cells expressing low levels of epithelial cell adhesion molecule (EpCAM) are not recognized by the capture reagent. In this exploratory study, we aimed to evaluate the status of EpCAM in CTCs isolated from a group of metastatic colorectal cancer patients, in 40% of whom, CTC had been found to be undetected by the CellSearch® system...
June 7, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28604993/association-of-n-acetyltransferase-1-polymorphism-and-bladder-cancer-risk-an-updated-meta-analysis-and-trial-sequential-analysis
#12
Zicheng Xu, Xiao Li, Zhiqiang Qin, Jianxin Xue, Jingyuan Wang, Zhentao Liu, Hongzhou Cai, Bin Yu, Ting Xu, Qin Zou
BACKGROUND: Individual studies of the association between N-acetyltransferase 1 (NAT1)*10 allele and bladder cancer susceptibility have shown inconclusive results. To derive a more precise estimation of any such relationship, we performed this systemic review and updated meta-analysis based on 17 publications. METHODS: A total of 17 studies were investigated with 4,322 bladder cancer cases and 4,944 controls. The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of the association...
June 7, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28561881/reference-limits-for-chromogranin-a-cyfra-21-1-ca-125-ca-19-9-and-carcinoembryonic-antigen-in-patients-with-chronic-kidney-disease
#13
Gustav Mikkelsen, Arne Åsberg, Maria E Hultström, Knut Aasarød, Gunhild G Hov
BACKGROUND: Patients with chronic kidney disease (CKD) may have increased plasma concentrations of some tumor markers even when no cancer is present. Previous studies have indicated that plasma concentrations of chromogranin A (CGA), cytokeratin 19 fragments (CYFRA 21-1), cancer antigen 125 (CA 125), cancer antigen 19-9 (CA 19-9) and carcinoembryonic antigen (CEA) are higher in patients with CKD but without cancer, than in healthy individuals, and this can make interpretation of results more complicated...
May 27, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28561880/meta-analysis-of-prognostic-role-of-ki-67-labeling-index-in-gastric-carcinoma
#14
Jung-Soo Pyo, Nae Yu Kim
BACKGROUND: This meta-analysis aimed to elucidate the prognostic role of the Ki-67 labeling index (LI) in gastric cancer (GC). METHODS: The current study included 3,615 GC patients in 20 eligible studies, and evaluated the prognostic role of Ki-67 LI in GC. Subgroup analysis was conducted based on depth of invasion and cutoff value for high Ki-67 LI. RESULTS: A high Ki-67 LI correlated significantly with worse survival (hazard ratio [HR] = 1...
May 27, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28561882/muc1-rs4072037-polymorphism-is-associated-with-decreased-risk-of-gastric-cancer-a-meta-analysis
#15
Yu Ye, Chong Yang, Lei Xu, Dilong Fang
BACKGROUND: Several studies have recently investigated the association between mucin 1 (MUC1) rs4072037 polymorphism and gastric cancer (GC) risk, but with conflicting results. The aim of this meta-analysis was to evaluate the association between MUC1 rs4072037 polymorphism and GC risk. METHODS: A comprehensive database search of PubMed, Elsevier, Embase and China National Knowledge Infrastructure (CNKI) databases was performed to identify relevant studies. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of any association...
May 26, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28561879/des-gamma-carboxy-prothrombin-in-hepatocellular-cancer-patients-waiting-for-liver-transplant-a-systematic-review-and-meta-analysis
#16
Quirino Lai, Samuele Iesari, Giovanni Battista Levi Sandri, Jan Lerut
BACKGROUND: The use of des-gamma-carboxy prothrombin (DCP) as a predictor of the risk of recurrence of hepatocellular cancer (HCC) after liver transplant (LT) has recently gained interest, especially in view of the recent extension of the eligibility criteria of these patients for LT. The aim of the present study is to look into this important matter based on a systematic review and meta-analysis. METHODS: A systematic literature review about the role of DCP in the specific setting of LT for HCC has been conducted...
May 26, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28561878/epidemiology-based-assessment-of-tumor-marker-overordering-in-breast-cancer-an-algorithm-to-examine-different-disease-conditions
#17
Chiara Trevisiol, Massimo Gion, Ruggero Dittadi, Marco Zappa, Aline S C Fabricio
Laboratory tests are frequently overused and have elevated inappropriateness rates. We previously developed a model to investigate the rate of utilization of tumor markers (TMs) in outpatients as an indirect indicator of inappropriateness. The model was based on the comparison between the number of actually ordered and expected tests, with the latter estimated on the basis of both epidemiological data and recommendations of available clinical practice guidelines.In this paper we propose an algorithm to distinguish prevalent cases without evidence of disease from those with metastatic spread, on the basis of both epidemiological and clinical information...
May 23, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28525661/comparison-between-mononucleotide-and-dinucleotide-marker-panels-in-gastric-cancer-with-loss-of-hmlh1-or-hmsh2-expression
#18
Jeong Goo Kim, Soyoung Shin, Joonhong Park
BACKGROUND: DNA mismatch repair deficiency is an important molecular mechanism of genetic instability in gastric cancer, and a high instability at microsatellites is associated with favorable prognosis. We compared mononucleotide and dinucleotide microsatellite instability (MSI) marker panels in 56 paired gastric tumor and normal samples. METHODS: The mononucleotide marker panel (mono panel) consisted of 8 markers: BAT25, BAT26, BAT40, BAT-RII, NR21, NR22, NR24 and NR27...
May 16, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28623646/prognostic-and-clinicopathological-significance-of-ccat2-in-chinese-patients-with-various-tumors
#19
Guang-Wei Tian, Nan Li, Yan Xin
BACKGROUND: Colon cancer-associated transcript 2 (CCAT2) as a long noncoding RNA (lncRNA) is overexpressed and plays a significant prognostic role in patients with tumors. The present study aimed to comprehensively evaluate the clinical value of CCAT2 in the Chinese population, as a potential prognostic marker in multiple cancers. METHODS: A systematic search of eligible studies was conducted in the PubMed, Web of Science, Cochrane Library, Wanfang and the China National Knowledge Infrastructure databases as of March 31, 2017...
May 15, 2017: International Journal of Biological Markers
https://www.readbyqxmd.com/read/28497457/mitochondrial-dna-copy-number-variation-as-a-potential-predictor-of-renal-cell-carcinoma
#20
Eman T Elsayed, Mohamed M Hashad, Iman E Elgohary
BACKGROUND: Peripheral blood mitochondrial DNA (mtDNA) copy number alteration has been suggested as a risk factor for several types of cancer. The aim of the present study was to assess the role of peripheral blood mtDNA copy number variation as a noninvasive biomarker in the prediction and early detection of renal cell carcinoma (RCC) in a cohort of Egyptian patients. METHODS: Quantitative real-time polymerase chain reaction (qPCR) was used to measure peripheral blood mtDNA copy numbers in 57 patients with newly diagnosed, early-stage localized RCC and 60 age- and sex-matched healthy individuals as a control group...
May 10, 2017: International Journal of Biological Markers
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