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Objective To investigate the effect of miR-152 on ox-LDL induced cholesterol accumulation in RAW264.7 macrophages and to verify its target genes. Methods RAW264.7 macrophages were divided into two groups:miR-152 group and negative control group. Total cholesterol(TC),cholesterol ester(CE)concentra- tion and the ratio of CE/TC were observed in the two group by ox-LDL for 48 h. Furthermore,bioinformatics meth-od,dual luciferase reporter assay,real-time quantitative PCR and Western blot were applied to detect the target gene of miR-152. Results As compared with the control group,the contents of TC,CE and the ratio of CE/TC were increased in the miR-152 group. The mRNA and protein expressions of ABCA1 were significantly lower in miR-152 group. Conclusions MiR-152 could inhibit macrophage foam cell formation through decreasing the expres-sion of ABCA1.
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OBJECTIVE:To observe the clinical efficacy and safety of amlodipine besylate combined with lisinopril and hydro-chlorothiazide,atorvastatin in the treatment of severe primary hypertension complicating with carotid atherosclerosis. METHODS:90 patients with severe primary hypertension complicating with carotid atherosclerosis were divided into control group (45 cases) and observation group(45 cases)according to random lottery form. Both groups were given Atorvastatin calcium tablet 20 mg/time orally,qd;control group was additionally given Amlodipine besylate tablet 5 mg/time orally,qd;observation group was additional-ly given Lisinopril and hydrochlorothiazide tablet 10 mg/time orally,qd,on the basis of control group. Both groups were treated for 8 weeks. Clinical efficacies of 2 groups were compared as well as blood pressure level,IMT,PV of carotid atherosclerosis, hs-CRP,TNF-α before and after treatment. The occurrence of ADR was recorded. RESULTS:Total response rate of observation group was significantly higher than that of control group,with statistical significance (P0.05). After treatment,the levels of SBP,DBP, IMT,PV,hs-CRP and TNF-α level in 2 groups were significantly lower than before;the observation group was significantly lower than the control group,with statistical significance (P0.05). CONCLUSIONS:Amlodipine besylate combined with lisinopril and hydrochlorothiazide,atorvastatin in the treatment of primary hypertension complicating with carotid atherosclerosis can effectively control the blood pressure level, delay the progression process of carotid atherosclerosis,reduce the inflammatory reaction degree,but dose not increase the occur-rence of ADR with good safety.
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AIM:To study the protective effect of anti-aging Klotho protein on human umbilical vein endothe-lial cells (HUVECs) treated with high glucose (HG).METHODS:HUVECs were cultured in vitro, and divided into PBS control group, 5.5 mmol/L glucose group, 33.3 mmol/L glucose group, 0.1 μmol/L Klotho +33.3 mmol/L glucose group, 1 μmol/L Klotho+33.3 mmol/L glucose group , and 10μmol/L Klotho+33.3 mmol/L glucose group .The viabili-ty of the HUVECs was measured by MTT assay .The content of malondialdehyde ( MDA) , and the activities of lactate de-hydrogenase (LDH), superoxide dismutase (SOD) and glutathione (GSH) in cell culture supernatants were observed . The production of reactive oxygen species ( ROS) in HUVECs was analyzed by flow cytometry .The levels of nitric oxide ( NO) , endothelin ( ET-1 ) , intercellular adhesion molecule-1 ( ICAM-1 ) in HUVEC culture medium were detected by ELISA.The protein expression of nuclear factor-kappa B (NF-κB) in the HUVECs was determined by Western blot .RE-SULTS:Compared with PBS control group , 33.3 mmol/L glucose significantly decreased the HUVEC viability , increased ROS, LDH and MDA levels , reduced the activities of SOD and GSH , decreased the NO secretion , and induced the ET-1 and ICAM-1 secretion and the protein expression of NF-κB in HUVECs.When HUVECs were treated with Klotho protein at different concentrations combined with 33.3 mmol/L glucose, the cell viability was increased significantly , the ROS, LDH and MDA levels were decreased significantly , the antioxidant SOD and GSH activities were significantly increased , the se-cretion of NO was increased , but ET-1 and ICAM-1 releases and protein expression of NF-κB were significantly reduced . CONCLUSION:Anti-aging Klotho protein promotes the viability of HUVECs treated with HG , reduces the oxidative dam-age and ROS production , and restores the normal secretory function of HUVECs , thus playing a protective role in vascular endothelial cells through reducing the protein expression of NF-κB.
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Objective To investigate the effect of miR-152 on ox-LDL induced cholesterol accumulation in RAW264.7 macrophages and to verify its target genes. Methods RAW264.7 macrophages were divided into two groups:miR-152 group and negative control group. Total cholesterol(TC),cholesterol ester(CE)concentra- tion and the ratio of CE/TC were observed in the two group by ox-LDL for 48 h. Furthermore,bioinformatics meth-od,dual luciferase reporter assay,real-time quantitative PCR and Western blot were applied to detect the target gene of miR-152. Results As compared with the control group,the contents of TC,CE and the ratio of CE/TC were increased in the miR-152 group. The mRNA and protein expressions of ABCA1 were significantly lower in miR-152 group. Conclusions MiR-152 could inhibit macrophage foam cell formation through decreasing the expres-sion of ABCA1.
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This paper analyses the high-density lipoprotein cholesterol(HDL-ch), low-density lipoprotein cholesterol (LDL-ch) and very low-density lipoprotein cholesterol (VLDL-ch) levels in 877 healthy persons, 328 atheletes, 261 patients with coronary heart disease(CHD)and apoplexy, and so on.The result achieved is very close to that reported in foreign literature. The results show that the ratio of LDL-ch/HDL-ch for prevention and treatment of atherosclerosis is more sensitive than testing of other lipids and portions of lipopro-teins.