1.Advances in the Anandamide
Progress in Biochemistry and Biophysics 2001;28(2):152-155
Anandamide (N-arachidonoylethanolamide), an arachidonic acid derivative, is an endogenous ligand for cannabinoid receptors, which are m embers of the G protein (Gi)-coupled receptors family. Ananamide is mainly foun d in central nervous system, immune system and uterus etc and mimics most of the effects of (-)Δ9-tetrahydrocannabinoid [(-)Δ9-THC], a psyco active derivative of marijuana. Fatty-acid amide hydrolase (FAAH), which is inv olved in hydrolyzing anandamide to arachidonic acid and ethanolamide, may quickl y regulate level of anandamide in vivo.
2.Human telomerase reverse transcriptase gene-transfected effects on biological characteristics of Schwann cells
Chinese Journal of Tissue Engineering Research 2015;(14):2250-2254
BACKGROUND:Studies have shown that genetical y modified Schwann cel s can survive for a longer time in vivo, and promote nerve regeneration and functional recovery. OBJECTIVE:To transfect human telomerase reverse transcriptase (hTERT) gene into rat Schwann cel s cultured in vitro via PLXSN vector, and to detect the telomerase activity and biological characteristics of Schwann cel s. METHODS:Schwann cel s from Wistar rats were cultured in vitro and transfected by PLXSN vector with (hTERT group) or without hTERT (empty vector group). Normal Schwann cel s were selected as control group. RT-PCR and western blot methods were used to detect the hTERT protein and mRNA levels in Schwann cel s, and flow cytometry was used to measure the cel cycle distribution. Cel growth was observed by cel growth curve and MTT colorimetric method. RESULTS AND CONCLUSION:At 48 hours after transfection, the mRNA and protein expressions of hTERT were remarkably seen in Schwann cel s. Compared with the control and empty vector groups, the cel s grew faster, the number of cel s at G 0/G 1 Schwann cel s cultured in vitro. phase was reduced, but the number of S phase cel s was increased in the hTERT group (P<0.05). These findings indicate that PLXSN vector-mediated hTERT transfection of Schwann cel s can significantly improve the activity of telomerase in Schwann cel s as wel as promote the proliferation of Schwann cells cultured in vitro.
3.Chemical constituents of medicinal fungus Shiraia bambusicola
Chinese Traditional and Herbal Drugs 1994;0(08):-
Objective To study the chemical constituents of the medicinal fungus Shiraia bambusicola.Methods Chromatography on silica column and preparative HPLC were used to purify the compounds;Spectroscopic methods including 1H-NMR,13CNMR,and MS were used to elucidate their structures.Results Nine compounds were isolated and identified as 3,6,8-trihydroxy-l-methylxanthone(1),3,8-dihydroxy-6-methoxy-1-methylxanthone(2),2,3,6,8-tetrahydroxy-l-methylxanthone(3),3,4,6,8-tetrahydroxy-l-methylxanthone(4),pregn5(10)-en-3?,17?,20?-triol(5),macrosphelide A(6),(+)-griseofulvin(7),griseophenone A(8),and 11,11′-dideoxyverticillin A(9).Conclusion Compounds 1-9 are obtained from the fungus S.bambusicola for the first time.
4.The Anomalies of Thoracic Skeleton in Patients with Congenital Heart Disease
Journal of Practical Radiology 2001;0(10):-
Objective To study the radiographic findings of anomalies of thoracic skeletion in patients with congenital heart disease.Methods Frontal and lateral chest films of 252 cases with congenital heart disease proved by operation were reviewed.Results The skeletal anomalies in 8 cases including generalized sternal prominence,sternal bowing,pouter pigeon breast,hemivertebrae and butterfly vertebrae of thoracic spine,and deformities of ribs were discovered.Conclusion The skeleton anomalies which are divided into primary and secondary types often occur in patients with congenital heart disease.
5.Inhibitory effects of calmodulin antagonist EBB on cultured fibroblast
Weimin LIU ; Shixuan ZHAO ; Jie-Wen LIU ;
Chinese Pharmacological Bulletin 1986;0(05):-
Inhibitory effects of the O - ( 1 - ethoxvl - butyl ) berbarmine (EBB) on cultured fibroblast was studied by observating calmodulin (CaM ) content of cultured fibroblast with ELISA and DNA content at each phase of cell cycle with flow - cvtometerv. The CaM con-tent in the test group . compared to control . decreased markedly and DNA content increased significantly in the G0+Gi phase but reduced in the S phase. These results suggested that inhibitory mechanism of EBB on fibroblast proliferation may be closely related to CaM decrease in cells.
6.Correlation between HBV-DNA and progress to cirrhosis in patients with chronic hepatitis B
Lili LIU ; Jiyao WANG ; Weimin SHE
Chinese Journal of Digestion 2008;28(11):742-745
Objective To investigate the relationship between HBV-DNA level during the course and progress tO cirrhosis in patients with chronic hepatitis B.Methods From 2001 to 2007,a total of 239 chronic hepatitis B patients confirmed by liver biopsy were followed up for a median time of 28 months.HBV-DNA level was measured at baseline and end point.Results Those who progressed to cirrhosis were older and with higher HBV-DNA levels at the end point.Kaplan-Meier analysis showed that the higher the HBV-DNA level at end point,the higher the risk to cirrhosis(X2=11.736,P=0.019).There was no difference between patients with and without cirrhosis at baseline of HBV-DNA level(P=0.531).The Cox regression indicated that the independent risk factors of cirrhosis were as followings:HBV-DNA level at the end point,stage of fibrosis,hepatitis B e antigen negative and γ-glutamyl transpeptidase at entry with relative risk ratio of 1.898,1.918,8.976 and 1.006,respectively.Conclusion HBV-DNA level is correlated with progress to cirrhosis in patients with chronic hepatitis B.
7.hMSH6 polymorphisms and cancer susceptibility
Wei LIU ; Zhiqiang LING ; Weimin MAO
Journal of International Oncology 2011;38(4):243-245
hMSH6 is one of the most important members in the mismatch repair family. Its polymorphism is closely related to the pathogenesis and development of neoplasm, particularly in colorectal cancer and endometrial cancer. Moreover, it has been suggested to play a more important role in endometrial cancer compared with hMLH1 and hMSH2.
8.Research Progress of Scutellarin Pharmacological Study
Meina SHI ; Weimin YANG ; Xuan LIU
Journal of Kunming Medical University 2013;(9):151-154
Scutellarin (SCU), the main bioactive component of , has been shown to offer beneficial effects on cardiovascular and cerebrovascular functions. SCU effects on angiogenesis and cancer cells and endothelial cells, and it also shows the effect on oxidative stress-induced cell apoptosis. SCU inhibits the translocation of PKC in vivo and in vitro,and may have value as a drug in the treatment of diabetic complications. We reviewed SCU pharmacological research progress in the present paper.
9.Influence of Trisialoganglioside-GT1b combined with Edaravone Injection on clinical effect and serum related indicators in patients with acute cerebral infarction
Weimin LI ; Hongwei LIU ; Xiaoping LEI
Drug Evaluation Research 2017;40(6):807-811
Objective To investigate the influence of Trisialoganglioside-GTlb combined with Edaravone Injection on clinical effect and serum related indicators in patients with acute cerebral infarction.Methods A total of 126 cases of patients with acute cerebral infarction in our hospital from October 2010 to May 2016 were selected and divided into observation group and control group,63 cases in each group.Patients in the control group were treated with regular treatment and Edaravone Injection,and patients in the observation group were treated with regular treatment,Edaravone Injection and Trisialoganglioside-GTlb.The clinical effect,NIHSS scores,Barthel index scores,serum level of neuron specific enolase (NSE),S100β protein,superoxyde dismutase (SOD),advanced oxidation protein products (AOPP) and malondiadehyde (MDA) were compared.Results The total effective rate of the observation group (90.48%) was significantly higher than that of the control group (76.19%),the difference between the two groups was statistically significant (P < 0.05).After two weeks of treatment,two groups of NIHSS and Barthel index scores were significantly lower than before treatment,the difference was statistically significant (P < 0.05);and the NIHSS and Barthel index scores of observation group were significantly lower than that of control group,the difference was statistically significant (P < 0.05).NIHSS scores,Barthel index scores of the observation group were significantly better than that of the control group (P < 0.05);The serum level of NSE,S100,AOPP,MDA of two groups after treatment were significantly lower than that before treatment,the difference was statistically significant (P < 0.05);and the above indexes of the observation group was significantly lower than the control group,the difference was statistically significant (P < 0.05);SOD levels of two groups were significantly increased than before treatment,the difference was statistically significant (P < 0.05);and the SOD levels of observation group was significantly higher than that of control group,the difference was statistically significant (P < 0.05).Conclusion Trisialoganglioside-GT1b can synergy improve the clinical effect of Edaravone Injection in patients with acute cerebral infarction,and be good to recovery the neurologic function and ability of daily living,and these may be related to the change of the serum level of NSE,S100β protein,SOD,AOPP and MDA.
10.The new progress in treatment of hypertension
Weimin LI ; Bin LIU ; Xiaowei ZHANG
Chinese Journal of Practical Internal Medicine 2001;0(09):-
In order to achieve high quality antihypertensive effect.It's necessary to develop new antihypertensive drugs.This paper expounds new antihypertensive medications,including the mechanism of action,the drug characteristics and representatives of new antihypertensive medications,such as selective aldosterone receptor antagonist,D1 receptor agonist,endopeptidase-angiotensin converting enzyme inhibitor,renin inhibitor,endothelin receptor blockers,potassium channel opener,nitrogen monoxidum,T-calcium channel blockers.Hypertension is a polygenic inheritance disease and gene therapy is a hot spot of currently hypertension treatment research.This paper introduces the research progress of gene therapy of hypertension.