scholarly journals Altered expression of small leucine-rich proteoglycans (Decorin, Biglycan and Lumican): Plausible diagnostic marker in urothelial carcinoma of bladder

Tumor Biology ◽  
2017 ◽  
Vol 39 (5) ◽  
pp. 101042831769911 ◽  
Author(s):  
Sandeep Appunni ◽  
Vivek Anand ◽  
Madhuram Khandelwal ◽  
Amlesh Seth ◽  
Sandeep Mathur ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Bladder Cancer ◽  
Urothelial Carcinoma ◽  
Messenger Rna ◽  
Quantitative Polymerase Chain Reaction ◽  
Rna Expression ◽  
Chain Reaction ◽  
Polymerase Chain ◽  
Lower Expression ◽  
Urothelial Carcinoma Of Bladder

Small leucine-rich proteoglycans are components of extracellular matrix that regulates neoplastic transformation. Among small leucine rich proteoglycans, Decorin, Biglycan and Lumican are most commonly implicated markers, and their expression is well studied in various malignancies. In this novel study, we have collectively evaluated expression of these three molecules in urothelial carcinoma of bladder. Thirty patients of confirmed untreated bladder cancer, 30 healthy controls for blood and 30 controls for adjacent non-tumour tissue were enrolled. Blood was collected from all subjects and tumour/adjacent normal tissue was obtained from the patients. Circulatory levels were estimated by enzyme-linked immunosorbent assay, relative messenger RNA expression by quantitative polymerase chain reaction and protein expression by immunohistochemistry and western-blotting. Circulatory levels of Biglycan (p = 0.0038) and Lumican (p < 0.0001) were significantly elevated, and that of Decorin (p < 0.0001) was significantly reduced in patients as compared with controls. Protein expression by immunohistochemistry and western-blotting showed elevated expression of Lumican and Biglycan and lower expression of Decorin in urothelial carcinoma of bladder. Quantitative polymerase chain reaction for messenger RNA expression from tissue specimens revealed significantly higher expression of Biglycan (p = 0.0008) and Lumican (p = 0.01) and lower expression of Decorin (p < 0.0001) in urothelial carcinoma of bladder. Out of all molecules receiver operating characteristic curve showed that the 0.207 ng/ml cut-off of serum Lumican provided optimum sensitivity (90.0%) and specificity (90.0%). Significant alteration of matrix small leucine-rich proteoglycans in urothelial carcinoma of bladder was observed. Higher expression of Lumican in Bladder cancer patients with the cut-off value of highest optimum sensitivity and specificity shows its importance as a potential non-invasive marker for early detection of UBC following further validation in large patient cohort.

Quantitative Polymerase Chain Reaction (PCR) to Analyze Messenger-RNA Expression in Tissue Obtained by Directional Atherectomy

Angiology ◽  
1994 ◽  
Vol 45 (11) ◽  
pp. 911-916
Author(s):  
Ralf Köster ◽  
Ulrich Windstetter ◽  
James M. Gulizia ◽  
Peter Uberfuhr ◽  
Günther Baumann ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Messenger Rna ◽  
Quantitative Polymerase Chain Reaction ◽  
Rna Expression ◽  
Chain Reaction ◽  
Directional Atherectomy ◽  
Polymerase Chain

scholarly journals Elevated AQP1 Expression Is Associated With Unfavorable Oncologic Outcome in Patients With Hilar Cholangiocarcinoma

2016 ◽  
Vol 16 (4) ◽  
pp. 421-427 ◽  
Author(s):  
Chunxiang Li ◽  
Xiaofu Li ◽  
Linfeng Wu ◽  
Zheng Jiang
Keyword(s):  
Polymerase Chain Reaction ◽  
Messenger Rna ◽  
Hilar Cholangiocarcinoma ◽  
Quantitative Polymerase Chain Reaction ◽  
Rank Test ◽  
Chain Reaction ◽  
Data Set ◽  
Aquaporin 1 ◽  
Tumor Node Metastasis Stage ◽  
Polymerase Chain

Background: Hilar cholangiocarcinomas are malignant tumors with a poor prognosis. An early prediction of prognosis for patients may help us determine treatment strategies. Aquaporin 1 is a cell membrane channel involved in water transport, cell motility, and proliferation. Increasing evidences showed that aquaporin 1 played a role in tumor prognosis and diagnosis. The purpose of this study is to evaluate the role of aquaporin 1 in hilar cholangiocarcinoma. Methods: Here, we analyzed messenger RNA expression data of genes function as bile secretion in a data set of 169 samples using the R2 bioinformatic platform ( http://r2.amc.nl ). Quantitative polymerase chain reaction was performed to verify the gene expression in 17 hilar cholangiocarcinoma samples. Immunohistochemistry was also performed in a series of specimens from 62 hilar cholangiocarcinoma tissues, and its clinical significance was assessed by clinical correlation and Kaplan-Meier analyses. Results: All data were analyzed using the R2 web application, aquaporin 1 was selected for further analysis. The significant expression variation of aquaporin 1 among 17 cases with cholangiocarcinoma was also found using quantitative polymerase chain reaction. The expression level of aquaporin 1 protein significantly correlated with tumor-node-metastasis stage ( P = .002) and overall survival time ( P = .010). Higher aquaporin 1 expression indicated poor prognostic outcomes ( P <.05, log-rank test). Multivariate analysis also showed strong aquaporin 1 protein expression was an independent adverse prognosticator in hilar cholangiocarcinoma ( P = .002). Conclusion: This study highlighted the prognostic value of aquaporin 1 in hilar cholangiocarcinoma. Strong aquaporin 1 expression predicts poor survival, regardless of pathological features. Immunohistochemical detection of aquaporin 1, as a prognostic marker, may contribute to predicting clinical outcome for patients with hilar cholangiocarcinoma.

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