1.Effect of Anoectochilus roxburghii on the oxidation of low density lipoprotein in vitro
Journal of Medical Postgraduates 2004;0(02):-
Objective: To study the effect of Anoectochilus roxburghii on the oxidation of lipoprotein. Methods: The effects of Anoectochilus roxburghii on low density lipoprotein(LDL) oxidative modification were assessed by the formation of conjugated dienes,thiobarbituric acid-reactive substance(TBARS) and the relative electrophoretic migration. Results: The addition of Anoectochilus roxburghii(1 ?l/ml) to the reaction mixture prolonged the lag phase by 1.5 times [from(8.8?0.4)min to(13.0?0.8)min].Anoectochilus roxburghii reduced LDL oxidative susceptibility in a dose dependent manner.In addition,Anoectochilus roxburghii resulted in a significant,dose dependent,reduction of TBARS contents and the decrease in LDL electrophoretic migration as compared to the control. Conclusion: These results indicated that Anoectochilus roxburghii has effective antioxidative capacity by reducing oxidative susceptibility and peroxidation degree of LDL.
2.Research progress in the correlation between microRNAs and glioma
Journal of Medical Postgraduates 2014;(7):746-750
MicroRNAs ( miRNAs) are a kinds of small non-coding RNA that regulate the expression of gene at the posttran-scriptional level and play important roles in a variety of physiological and pathological processes such as proliferation , differentiation and apoptosis.Recently, it has been reported that miRNAs expression abnormalities are closely associated with the initiation and devel -opment of glioma .Moreover , the expression levels of some miRNA are specifically involved in the molecular pathogenesis of glioma , revealing their great potential as a class of novel biomarkers for cancers and therapeutic targets .In this review , we summarizes the lat-est researches on miRNA and glioma .
3.Cholesteryl ester transfer protein gene variation relate to lipid parameters and cardiovascular risk
Journal of Medical Postgraduates 2004;0(01):-
Cholesteryl ester transfer protein(CETP) plays an important role in the transfer and exchange of cholesteryl esters,phospholipid and triacyglycerols.It affects lipid composition,concentration,particle size and function of lipoproteins, partcipating in the development of atherosclerosis.The role of CETP in human atherosclerosis has not been fully elucidated.Gene variations of the CETP were associated with altered CETP plasma levels and activity,lipid metabolism disorder.The relationships between CETP gene variation,lipid parameters and cardiovascular risk was reviewed.
4.The oxidative modification of high density lipoprotein and atherosclerosis
Chinese Journal of Pathophysiology 1989;0(05):-
The reduced level of high density lipoprotein (HDL) in plasma is a strong predictor of atherosclerotic vascular disease risk. However, like low density lipoprotein (LDL), HDL is readily oxidized by a variety of oxidants in vitro . This review briefly discussed about the susceptibility of HDL to oxidation, the site and physiologic oxidants of HDL oxidation in vivo ,structural change in oxidized HDL, as well as the influence of different changes in structure of oxidized HDL on the protective function of HDL against atherosclerosis.
5.Progress in researches on the mechanisms of Morinda citrifolia L.
Journal of Medical Postgraduates 2003;0(09):-
Morinda citrifolia L.(noni) has been used as a folk remedy for thousands of years and reported to have a broad range of therapeutic effects.Recent studies of noni have indentified some of its useful pharmacologic compounds and indicated its anti-cancer and anti-oxidation mechanisms.The recent advances in noni researches are reviewed.
6.Relationship between common immunosuppressants and hyperlipidemia
Journal of Medical Postgraduates 2003;0(10):-
Some immunosuppressants influence the synthesis and metabolism of lipids,which is a major factor for hyperlipidemia in organ transplant patients.The recent studies on the relationship between immunosuppressants and hyperlipidemia are reviewed.
7.The therapy of low levels of high density lipoprotein-cholesterol
Chunni ZHANG ; Lu FAN ; Junjun WANG
Journal of Medical Postgraduates 2004;0(01):-
High density lipoprotein(HDL) is an antiatherogenetic lipoprotein and low level of HDL-cholesterol(HDL-C) in plasma is a risk factor for coronary heart disease.Therefore,raising the level of HDL-C by pharmaceuticals,oestrogen replacement and biologic therapy for dyslipidemia exhibit great clinical significance.
8.Application of Serum miR-193a-3p,miR-337-5p and miR-483-5p in the Diagnosis and Prognosis of Esophageal Squamous Cell Carcinoma
Yaxu JIA ; Cheng WANG ; Chunni ZHANG
Journal of Modern Laboratory Medicine 2017;32(2):5-9
Objective To investigate the expression level of serum miR-193a-3p,miR-337-5p and miR-483-5p in esophageal squamous cell carcinoma (ESCC) patients and to explore their value for diagnosis and prognosis of ESCC.Methods Serum samples were collected from 63 ESCC patients before and after surgery in Nanjing General Hospital and Xuzhou Cancer Hospital between June 2013 and May 2014 and serum sanples of 63 age-and sex-matched healthy individuals acted as the normal controls.TaqMan Low Density Assay was used to detect the deregulated miRNA in ESCC patients and then quantitative real-time PCR was used to validate the upregulated miRNA miR-193a-3p,miR-337-5p and previously reported miR483-5p that was upregulated in oral squamous cell carcinoma (OSCC).Finally,the three miRNA were evaluated for their clinical value in the diagnosis and predicting prognosis of ESCC.Results Compared with normal controls,serum levels of miR193a-3p,miR-337-5p and miR-483-5p in ESCC patients were significantly up-regulated (0.459±0.339 vs 0.195±0.084,U =591;5.686±5.211 vs 2.476±0.808,U=605;32.545 ± 22.479 vs 19.509±10.601,U=1 037,respectively,all P< 0.0001) and their levels were significantly reduced after the surgical treatment (P<0.05).The areas under the ROC curve of serum miR-193a-3p,miR-337-5p,miR-483-5p and miR-Panel were all larger than that of CEA.Univariate Kaplan-Meier analysis revealed that ESCC patients with low expression level of miR-483-5p in postoperative serum exhibited higher survival rate than those with high level(P=0.022).Conclusion Serum miR-193a-3p,miR-337-5p and miR-483-5p can be potential molecular biomarkers in the diagnosis and predicting prognosis of ESCC.
9.Serum paraoxonase and its relationship to atherosclerosis
Chunni ZHANG ; Li LI ; Junjun WANG ;
Journal of Medical Postgraduates 2003;0(06):-
Human serum paraoxonase (PON1) is a high density lipoprotein (HDL)associated enzyme capable of hydrolyzing lipid peroxides in vitro .PON1 has recently attracted attetion as a key factor against oxidative modification of LDL by involving in degradation of oxidized phospholipid and may therefore play an important role on the prevention of the atherosclerotic process of HDL.The concentration and activity of PON1 have been shown to be associated with the risk of atherosclerosis.In addition,the genetic polymorphisms of PON1 have been proposed as a genetic marker of risk for coronary artery disease.The measurement of the genetic polymorphisms of PON1 may be helpful in the prevention of coronary artery disease.
10.Lipoprotein (a) and its immune complexes concentrations in patients with various dyslipidaemias
Daning CHEN ; Junjun WANG ; Chunni ZHANG
Journal of Medical Postgraduates 2004;0(02):-
Objective:To investigate the possible interaction of Lp(a), and Lp(a) circulating immune complexes (CIC) 〔Lp(a)-CIC〕 level with triglyceride (TG). Methods:Plasma Lp(a), Lp(a)-CIC and LDL-CIC levels were determined by ELISAs in 232 patients with various dyslipidaemias, respectively. Results:Hypertriglyceridaemic patients exhibited the lowest plasma Lp(a) levels, while hypercholesterolaemic patients exhibited the highest. Patients with mixed hyperlipidaemia had intermediate serum Lp(a) concentrations, which were significantly lower than those in the controls. Interestingly, we also found that hypertriglyceridaemic patients exhibited the lowest plasma Lp(a)-CIC and LDL-CIC levels, while hypercholesterolaemic patients exhibited the highest. TG levels were negatively correlated with Lp(a) (r=-0.15, P