ABSTRACT
Objective Detecting plasma level of circular RNA(circRNA)hsa_circ_0009024 in pulmonary tuberculosis(TB)patients,and evaluating its diagnostic value for TB.Methods From January 2016 to December 2016, a hosptial-based, case-control study was performed, which include 90 untreated active pulmonary tuberculosis patients(TB group),75 healthy people(healthy control)and 84 patient with other diseases(other disease group).Plasma level of circRNA hsa_circ_0009024 was detected by real-time quantitative polymerase chain reaction.Furthermore, the 90 patients with TB were divided into different subgroups according to cavity formation and the lung fields involvement: patients without lung cavity(55 cases)vs those with lung cavity(35 cases),patients with involvement of <2 lung fields(49 cases)vs≥2 lung fields(41 cases).Plasma levels of hsa _circ_0009024 of 41 TB patientswere monitored andcomparedbefore and after 3 months anti-TB therapy.The sensitivity and specificity of plasma hsa_circ_0009024 were analyzed by using the receiver operating characteristic(ROC)curve.The comparison between two groups was performed with Mann-Whitney U test and the comparison among multigroupswas conducted with Kruskal-Wallis H test.Results Plasma levels of hsa_circ_0009024 in TB patients[1.98(1.42, 2.71)]were significantly higher than healthy controls[1.03(0.78,1.33)]and other disease groups[1. 13(0.77,1.51)](H=76.58,P<0.0001).Plasma levels of hsa_circ_0009024 in cavity pulmonary TB patients were higher than pulmonary TB patients without cavity(U=392.50,P<0.0001).Plasma levels of hsa_circ_0009024 in TB patients with involvement of ≥2 lung fields were higher than <2 lung fields(U=590.50,P=0.0008).As compared to pre -treatment[2.01(1.41, 2.71)], the plasma hsa_circ_0009024 levels decreased significantly in 3 months[1.22(0.85,1.47)](U=292.50,P<0.0001)after anti-TB therapy.The area under the receiver operating characteristics curve(AUC)of plasma hsa_circ_0009024 in discriminating the patients with TB from normal controls, pneumonia patients and lung cancer patients were 0.841 and 0.811, respectively.Conclusion The hsa_circ_0009024 can be used as a potential biomarker in TB diagnosis and monitoring.
ABSTRACT
Objective To detect the serum level of long non-coding RNA (lncRNA ) metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) in pulmonary tuberculosis (TB) patients ,and to evaluate its diagnostic value .Methods The expression of serum MALAT1 in 56 hospitalized TB patients , 35 latent TB infection (LTBI) individuals and 40 healthy controls were detected by real-time quantitative PCR .Serum levels of MALAT1 before and 3 ,6 months after anti-TB therapy in 16 TB patients were determined .Receiver operating characteristic (ROC) curve analysis was used to evaluate the sensitivity and specificity of serum MALAT 1 .The comparison between two groups was performed by Student t-test , and the comparison among three groups was performed with one-way analysis of variance test .Results Serum level of MALAT1 in TB patients was (2 .10 ± 1 .05) ,which was significantly higher than those in LTBI individuals (1 .16 ± 0 .51) and healthy controls (1 .02 ± 0 .44 ,F= 28 .53 ,P< 0 .01) .The MALAT1 level in TB patients with positive sputum smear was significantly higher than that in patients with negative sputum smear (2 .42 ± 1 .03 vs 1 .43 ± 0 .74 ,t= 2 .66 ,P< 0 .01) .Compared with pre-treatment (2 .28 ± 0 .79) ,the serum MALAT 1 levels decreased significantly in 3 months (1 .35 ± 0 .39) and 6 months (1 .05 ± 0 .30) after anti-TB therapy (t= 4 .33 ,6 .05 ;both P< 0 .01) .The area under the curve (AUC) of serum MALAT1 was 0 .821 , with sensitivity and specificity of 0 .732 and 0 .850 , respectively .Conclusion The expression of MALAT1 is up-regulated in TB patients , and could be used as potential novel biomarkers for the diagnosis of TB .