Curcumin combining with si-MALAT1 inhibits the invasion and migration of colon cancer SW480 cells

To study the effect of small interfering RNA targeting metastasis-associated lung adenocarcinoma transcript1 (si-MALAT1) combining with curcumin on the invasion and migration abilities of human colon cancer SW480 cells, and to explore the involved molecular mechanism. The recombinant lentiviral vector expressing si-MALAT1 was constructed, and its titer was determined by gradient dilution method. The colon cancer SW480 cells with stable expression of si-MALAT1 was established, followed by treatment with curcumin at different concentrations. The effect of curcumin or si-MALAT1 alone and the combination of the two on the cell activity was detected by MTT assay. The cell invasion and migration abilities were detected by transwell and scratch-wound assay. The relative expression level of MALAT1 was detected by RT-qPCR. The protein expression was determined by Western blot analysis. The IC50 of curcumin alone was 77.69 mmol/L, which was 51.17 mol/L when combined with curcumin and random sequence. The IC50 of curcumin was 30.02 mmol/L when combined with si-MALAT1. The increased susceptibility multiples was 2.58. The wound healing rates were 30.9% and 67.5% after treatment with si-MALAT1 combined with curcumin for 24 hrs and 48 hrs, respectively. The numbers of invasion cells were 200±12, 162±13, 66±8, 53±4 and 16±3 after treatment with si-MALAT1 combined with curcumin for 48 hrs. The relative expression level of lncRNA-MALAT1 in the curcumin group was 68%, and the relative expression level of lncRNA-MALAT1 in si-MALAT1group was 56%, and that for the combination treatment group was about 21%. The protein expression levels of β- catenin, c-myc and cyclinD1 were significantly down-regulated upon treatment with certain concentration of si-MALAT1 alone or combined with curcumin.si-MALAT1 could significantly inhibit the invasion and migration of SW480 cells by enhancing the sensitivity of SW480 cells to curcumin. The mechanism involved mignt be related to the down-regulation of β-catenin, c-myc and cyclinD1 proteins.

Influence of probucol combined atorvastatin on hemodynamics and blood lipids in patients with large artery cerebral infarction / 心血管康复医学杂志

Objective :To analyze influence of probucol combined atorvastatin on hemodynamics and blood lipids in patients with large artery cerebral infarction (LACI).Methods :A total of 92 LACI patients were randomly and e-qually divided into atorvastatin group and combined treatment group (received atorvastatin combined probucol ) , both groups were treated for six months .Therapeutic effect etc indexes before and after treatment were compared between two groups .Results :Compared with atorvastatin group after six-month treatment ,there were significant reductions in levels of TC [ (4.57 ± 0.82) mmol/L vs.(3.23 ± 0.71) mmol/L] ,TG [ (1.37 ± 0.45) mmol/L vs. (1.02 ± 0.34) mmol/L] ,LDL-C [ (2.52 ± 0.83) mmol/L vs .(1.50 ± 0.54) mmol/L] ,oxidized low density lipo-protein [ox-LDL ,(78.36 ± 14.05) mg/L vs.(58.37 ± 12.00) mg/L] ,left and right middle cerebral artery pulsatili-ty index (PI) [left :(0.84 ± 0.25) vs.(0.74 ± 0.14) ,right :(0.84 ± 0.23) vs.(0.74 ± 0.16)] and inflammatory factors ,and significant rise in total effective rate (69.57% vs.89.13% P＝0.020) ,left and right middle cerebral systolic blood flow velocity (Vs) [left :(87.45 ± 15.58) cm/s vs.(95.48 ± 18.34) cm/s ,right :(89.27 ± 14.36) cm/s vs.(96.18 ± 14.03) cm/s] and mean blood flow velocity (Vm) [left :(60.90 ± 16.19) cm/s vs .(76.19 ± 17.40) cm/s ,right :(62.08 ± 17.23) cm/s vs .(91.38 ± 19.26) cm/s] in combined treatment group ,P＜0.05 or ＜0.01. There was no significant difference in drug adverse reactions incidence rate between two groups , P＝1. 000 .Conclu-sion :Therapeutic effect of probucol combined atorvastatin is significantly better than that of pure atorvastatin on large artery cerebral infarction .It can more significantly improve blood lipids and intracranial artery hemodynamics with anti-inflammatory effects .