1.Lectin-Like Oxidized Low-Density-Lipoprotein Receptor-1 and Atherosclerosis
International Journal of Cerebrovascular Diseases 2008;16(12):939-942
Lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1) is a specific receptor of oxidized low-density lipoprotein (oxLDL) expressed in endothelial cells. It is a type Ⅱ single-chain transmembrane protein and belongs to C-type lectin family. LOX-1 leads to the injury of endothelial cells by mediating oxLDL, and plays a role in the initiation and progression of atherosclerosis, hypertension, thrombosis. This article reviews the association between LOX-1 and atherosclerosis.
2.Effects of high concentration of glucose on activity and protein expression of endothelial nitric oxide synthase (eNOS) in cultured human umbilical vein endothelial cells (HUVECs)
Shenqi YANG ; Biao XU ; Yunhai LIU
Chinese Journal of Diabetes 2008;16(1):50-52
The activity of eNOS was singificantly depressed by a high concentration of glucose in a concentration-and time-dependent manners after incubation of HUVECs with different concentrations of glucose and with high glucose plus insulin for different times.The physiological concentration of insulin can partially reverse the inhibitions of the activity and expression of eNOS induced by high concentration of glucose.
3.Comparative Research on Enzyme Activity Change of K~+-Na~+-ATP of Rats Model with Febrile Damp-heat Syndrome
Fanping CHENG ; Songlin LIU ; Yunhai LI
Journal of Zhejiang Chinese Medical University 2006;0(02):-
[Objective]To explore the effects of the model establishment methods on energy metabolism indicators of model rats.[Methods] Set up normal group,model group(high fat diet + high temperature and high humidity + colon bacillus),contrary group (routine diet + high temperature and high humidity + colon bacillus),the activity of liver mitochondria Na+-K+-ATPase was detected by principle of determines the content of phosphorus.[Results] The Na+-K+-ATPase active inmodel group was remarkably decreased,and had no significantly difference from contrary group.[Conclusion]The liver mitochondria Na+-K+-ATPase being remarkably decreased is one of pathological basis of damp-heat model,un-related with high fat diet.
4.Relationship between serum PON1-L55M gene polymorphisms and atherosclerotic cerebral infarction
Yunhai LIU ; Qing HUANG ; Qidong YANG
Journal of Clinical Neurology 1995;0(04):-
Objective To explore the relationship between paraoxonase1 (PON1) L55M gene polymorphisms and atherosclerotic cerebral infarction(CI)in Hunan Han people. Methods The study population was comprised of 153 atherosclerotic cerebral infarction patients and 153 healthy individuals. The PON1-L55M genotypes were determined by restriction fragment length polymorphism. Results MM genotype was not found both in CI and control group. In CI group, genotypic frequency of LL was 96.7% and LM was 3.3%. The allele frequency of L was 0.984 and M was 0.016. In control group, genotypic frequency of LL was 93.5% and LM was 6.5%. The allele frequency of L was 0.968 and M was 0.032. PON1-L55M polymorphism revealed no significant difference of genotype and allelic distribution in CI patients and controls.Conclusion The polymorphism of PON1-L55M is not related to the incidence of atherosclerotic cerebral infarction in Hunan Han people.
5.Analysis of Death Causes in Urban Areas of Changsha During Ten Years
Yunhai LIU ; Qidong YANG ; Wenbin ZHU
Journal of Chinese Physician 2000;0(12):-
Objective To investigate the effects of comprehensive intervention on population death rate. Methods To analyze population crude death rate, cause-specific death rate, and compare the death rate in intervention group with that of control.Results The average crude death rate in communities of Changsha was 617 79 per 100 000, with 557 27 per 100 000 of standarized death rate. Cerebrovascular disease, cardiocascular disease, tumour, disease of respiratory system injury and intoxication were from the first rank to the fifth in order the death causes. The death rate in intervention group was lower than that of control group significantly, and the death rate of cerebrovascular disease and cardiocascular disease in intervention group were lower than that of control significantly.Conclusions Cerebrovascular disease and cardiocascular disease are the major causes of death. Intervention on risks factors of cardio- and cerebrovascular diseases can lower the death rate of cardio- and cerebrovascular diseases and the population death rate.
6.Studies on Anti-pyretic Effect of F_(022) Components from Radix Isatidis on Rabbit Fever Models Induced by Endotoxin
Aihua LIN ; Yiming LIU ; Xiaohui QIU ; Yunhai LIU
Traditional Chinese Drug Research & Clinical Pharmacology 2000;0(06):-
Objective To observe the anti-pyretic effect of F022 from Radi x Isatidis.Methods The fever model was induced by intravenous injection of endo toxin into rabbits.Body temperature of the rabbits was measured at 0.5,1,2,3,an d 4h after administration in semi-vivo and in vivo.Results F022 subsided th e fever in rabbits induced by endotoxin in semi-vivo and vivo.Conclusion It is valuable for further research that F022 component is used as the main to scr een anti-pyretic active constituent.
7.The influence factor analysis of cardiovascular events during periopentive period undergoing hand surgery
Zhipeng REN ; Yunhai LIANG ; Dong LIU ; Wei LIU
Chongqing Medicine 2014;(7):816-817,820
Objective To analysis the risk factors of cardiovascular events during periopemtive period undergoing hand surgery . Methods 197 cases of hand surgery in our hospital from 2009 to 2012 ,aged 21 to 74 years were selected .The general condition ,an-esthesia ,operative time and intraoperative hemodynamics (blood pressure> 20% ) were recorded ,postoperative follow-up and record the occurrence of cardiovascular events ,and factor analysis was carried on .Results In 48 hours ,23 patients were suffered from car-diovascular events ,and the total morbidity rate was 11 .7% ,in which sinus tachycardia was 3 case(1 .52% ) ,atrial fibrillation were 2 cases(1 .02% ) ,premature ventricular contractions were 4 cases(2 .03% ) ,the myocardial ischemia were 11 cases(5 .58% ) ,the angi-na pectoris were 3 cases(1 .52% ) ,the myocardial isehemia was 1case(0 .51% ) .Multiariable Logistic regression analysis showed that ,the influencing factors of perioperative cardiovascular events undergoing hand surgery were were diabetes mellitus (OR=2 .012 ,P=0 .023) ,coronary heart disease (OR=2 .301 ,P=0 .028) ,preoperative ST ischemic changes (OR=2 .942 ,P=0 .031) ,lip-id abnormalities(OR=3 .012 ,P=0 .019) and hemodynamics changes during operation(OR=3 .522 ,P=0 .020) .Conclusion The risk factors of perioperative cardiovascular events independent undergoing hand surgery might be diabetes ,coronary heart disease , preoperative ST ischemic changes ,intraoperative hemodynamic changes .
8.The effect of intervention on blood pressure and incidence of cerebrovascular diseases
Yunhai LIU ; Zunjing LIU ; Qidong YANG ; Xianghua FANG ; Yanhong ZHOU
Chinese Journal of Geriatrics 2001;0(01):-
Objective To study the effect of intervention on blood pressure and incidence of cerebrovascular diseases. Methods In 1987, two cohorts population were selected in urban areas of Changsha . One was intervention group , another was control group. Baseline blood pressure levels were investigated and the events of stroke were collected. Results After 14 years, the cumulative stroke events were 89 in the intervention group and 128 in the control group; the mean blood pressure increased with statistical significance in each group except diastolic pressure in intervention group, but the control group increased more significantly; the analysis of Kaplan-Meier displayed that the rate of non-stroke events were higher in intervention group than that in control group and the analysis of COX regression indicated that the risk for stroke-events were 1.4 times higher in control group. Conclusions The intervention of risk factors can delay the increase of blood pressure by aging and reduce the risk of stroke-events.
9.Studies of the Active Component Parts of APN on the Antiplatelet Aggregation
Yunhai LIU ; Huafeng FANG ; Shuiping DING ; Hongwei WANG
Herald of Medicine 2001;(1):6-7
Objective:This paper was designed to reveal the active ingredients to inhibit platelet aggregation in Andregraphis Paniculata Ness (APN). Methods:Separating the active component parts of APN on the antiplatelet aggretion by extraction of organic solvent, chemical separation and silica column chromatography step by step, simultaneously comparing the effect of samples in APN on the antiplatelet aggretion induced by ADP, so that we can find the more active components. Results:We find the acid components in chlorlform parts (F021) show more active on the antiplatelet aggretion, farthermore we think we can obstain pure chemicals on the antiplatelet aggretion in F0212 and F0214. Conclusions:The active components on antiplatelet aggretion of APN can be prepared by separation step by step.
10.Effect of Radix Isatidis on LPS-stimulated Release of Inflammatory Cell Factors of Mice
Yunhai LIU ; Xiongzhang YIN ; Wei XIE ; Chujing SHI
China Pharmacy 1991;0(01):-
OBJECTIVE:To investigate the effect of the active site F 022 of Radix Isatidix antiendotoxin on the LPS-stimulated release of inflammatory cell factors in monocytes of mice.METHODS:Monocytes samples taken from the abdominal cavities of BALB/C mice were divided into6groups,the trial group were divided into1%,0.5%,0.25%and0.125%4groups,which added with Radix Isatidis F 022 sample solution and LPS solution;The positive group were treated with LPS solution;The negative group were added with1%F 022 solution.Thereafter the levels of TNF-?,IL-6and NO of the3kinds of inflammatory cell factors cultured in the clear supernatant liquid were determined.RESULTS:LPS could stimulate monocytes of mice to excessively release inflammatory cell factors including TNF-?,IL-6and NO.Compared with the positive group,the levels of inflammatory cell factors in the trial group reduced and which was dose dependent.CONCLU-SION:The active site F 022 of Radix Isatidix antiendotoxin has inhibitory action on LPS-stimulated excessive release of in-flammatory cell factors of in monocytes of mice.