Quantitative detection of DD3 mRNA in prostate cancer tissues by real-time fluorescent quantitative reverse transcription polymerase chain reaction.
- Author:
Zhi-hua TAO
1
;
Xiao-lu MAO
;
Cai-hong WANG
;
Xiao-dong CHEN
;
Kai-yuan YU
;
Zhi-liang WENG
;
Yuan-ping HU
;
Xiao-hua ZHANG
;
Hui XIE
;
Ou-chen WANG
;
Qi-tong SONG
;
Cheng-di LI
;
Zhan-guo CHEN
Author Information
- Publication Type:Journal Article
- MeSH: Aged; Aged, 80 and over; Antigens, Neoplasm; biosynthesis; genetics; Humans; Male; Middle Aged; Neoplasm Staging; Prostatic Hyperplasia; metabolism; pathology; Prostatic Neoplasms; metabolism; pathology; RNA, Messenger; genetics; ROC Curve; Reverse Transcriptase Polymerase Chain Reaction
- From: National Journal of Andrology 2007;13(2):130-133
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo analyze the expression of DD3 mRNA in the prostate tissues.
METHODSDD3 mRNA was detected by realtime fluorescent quantitative reverse transcription polymerase chain reaction (FQ-RT-PCR) based on the Taqman technique in the tissues of 27 patients with non-prostate cancer( NPCa), 21 prostate cancer( PCa), 39 benign prostatic hyperplasia (BPH) and 15 normal prostate (NP). The ROC curve was used to evaluate the diagnostic value of DD3 mRNA.
RESULTSDD3 mRNA expression was not detected in the NPCa tissues. The median expressions of DD3 mRNA in PCa, BPH and NP tissues were 7. 2 x 10(6), 2. 5 x 10(4) and 1.5 x 10(4) copies/mg tissue, respectively. The DD3 mRNA expression levels were significantly different between nonmalignant and malignant tissues (P < 0.01). No significant differences in DD3 mRNA expression were detected between the NP and BPH tissues and no significant correlation was found between the DD3 mRNA expression and clinical pathological parameters. The AUC-ROC was 0.937 (95% CI: 0.879 - 0.995) at cutoff value 1.4 x 10(5) copies/mg tissue. The sensitivity, specificity, accuracy, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio for DD3 were 90.5%, 85.0%, 86.7%, 76.0%, 94.3%, 6.03 and 0.11 respectively.
CONCLUSIONThe DD3 mRNA expression is confined to prostate tissues and highly upregulated in PCa tissues. It has a potential application value in the early diagnosis of prostate cancer and the follow-up of the patient.
