Diagnostic role of Golgi protein 73 and its gene determination in primary hepatic carcinoma / 中华检验医学杂志

ABSTRACT

Objective To explore the diagnostic value of GP-/3 protein in gene detection in the patient of primary hepatic carcinoma, to discuss the joint roles of serum GP73 and AFP, and provide a novel method for the diagnosis for PHC and screening for high-risk population. Methods ELISA was used to detect the serum level of GP73 and AFP in 73 cases of PHC, 13 cases of hepatic cirrhosis, 32 cases of hepatitis and 62 cases of health people. SYBR Green real time fluorescence quantitative PCR was used to detect the relative value of GP73 mRNA in the peripheral blood cells of each group. Comparative Ct method was used to evaluate the relative expression levels. Eight cases of normal liver tissues and 8 cases of PHC tissues were detected at the same time to compare the relative expression levels. Results Kruskal-Wallis test showed that the serum levels of GP73 and AFP had significant differences between four groups(H value were 89. 6 and 52.0, P ＜ 0. 01) and the whole blood GP73 mRNA had no significant differences(H =4. 33, P ＞ 0. 05). Mann-Whitney test showed that the serum levels of GP73 had significant differences among PHC groups[166. 7 (162. 7-231.8) μg/L] and liver cirrhosis[57. 3 (46. 6-113. 6) μg/L], hepatitis[29. 6(26. 2-54. 5) μg/L], health group[25.1 (20. 8-29. 4) μg/L] (U value were 246, 297, 349, P ＜ 0. 01).The A FP levels of the four groups were 380. 9 (258.5-503.2) μg/L, 3.8 (1.3-14. 5) μg/L, 5. 1 (2. 4-7. 8)μg/L and 2. 8(2. 2-5.7) μg/L. It also showed significant differences (U value were 246,419 and 790,P ＜0. 01). The GP73 mRNA expression of PHC liver tissues(12. 64) was significant higher than normal liver tissues (1.00). The critical values for GP73 and AFP was determined to be 123. 2 μg/L and 10. 6 μg/L through the 8OC curves. Under the critical value the sensitivity of GP73 and AFP were 65.8% and 53.4% ,and the specificity of CP73 and AFP were 95.3% and 92. 5% respectively. Joint detection could increase the sensitivity up to 79. 5%, and achieve the high specificity of 90. 7%. Conclusions As a new diagnositic marker of primary hepatic carcinoma, GP73 protein has the very good sensitivity and specificity. The GP73 mRNA in the whole blood sample could not be used for the diagnosis of PHC. But it woule be a good molecular marker for diagnosis of PHC in the liver tissue sample. The joint detection of GP73 and AFP could improve PHC diagnostic performance, and provide an effective approcach to the PHC high-risk screening.