Preliminary study of the role of IL-18/IL-18BP in mediating cytotoxic ability of NK-92MI cells against endothelial cells from GTKO porcine models / 器官移植

Objective To evaluate the role and potential mechanism of interleukin (IL)-18/IL-18 binding protein (BP) in mediating the killing effect of natural killer (NK)-92MI cells upon endothelial cells from α-1, 3- galactosyltransferase gene-knockout (GTKO) porcine models. Methods NK-92MI cells were divided into the NK, NK+IL-18, NK+GTKO, IL-18+NK+GTKO and IL-18+IL-18BP+NK+GTKO groups. The messenger ribonucleic acid (mRNA) levels of inflammation-related genes in NK-92MI cells were detected by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). The killing effect of NK-92MI cells on endothelial cells from GTKO porcine models was evaluated by lactate dehydrogenase (LDH) assay. The apoptosis of endothelial cells from GTKO porcine models was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) assay. The expression levels of proteins with killing effect and apoptosis-related proteins were determined by Western blot. Results Compared with the NK, NK+IL-18 and NK+GTKO groups, the expression levels of interferon (IFN)-γ, tumor necrosis factor (TNF)-α, IL-8, IL-3, IL-6 and granulocyte-macrophage colony stimulating factor (GM-CSF) mRNA were up-regulated in NK-92MI cells in the IL-18+NK+GTKO group, and the differences were statistically significant (all P < 0.05). Compared with the IL-18+NK+GTKO group, the expression levels of IFN-γ, TNF-α, IL-8, IL-3, IL-6 and GM-CSF mRNA were down-regulated in NK-92MI cells in the IL-18+IL-18BP+NK+GTKO group, and the differences were statistically significant (all P < 0.05). Compared with the NK+GTKO group, the expression levels of perforin, granzyme B and IFN-γ proteins in NK-92MI cells were up-regulated, the killing rate of NK-92MI cells against endothelial cells from GTKO porcine models was enhanced, the apoptosis rate of endothelial cells from GTKO porcine models was increased, and the ratios of B cell lymphoma-2 (Bcl-2)-associated X protein (Bax)/Bcl-2 and cleaved Caspase-3/Caspase-3 in endothelial cells from GTKO porcine models were elevated in the IL-18+NK+GTKO group, and the differences were statistically significant (all P < 0.05). Compared with the IL-18+NK+GTKO group, the expression levels of perforin, granzyme B and IFN-γ proteins were down-regulated, the killing rate of NK-92MI cells against endothelial cells from GTKO porcine models was decreased, the apoptosis rate of endothelial cells from GTKO porcine models was decreased, and the ratios of Bax/Bcl-2 and cleaved Caspase-3/Caspase-3 in endothelial cells from GTKO porcine models were declined in the IL-18+IL-18BP+NK+GTKO group, and the differences were statistically significant (all P < 0.05). Conclusions IL-18BP may block the expression of inflammation-related genes in NK-92MI cells induced by IL-18 and the killing effect of NK-92MI cells on endothelial cells from GTKO porcine models.

Relationship between traditional Chinese medicine syndrome types and serum HBV DNA level in chronic HBV carriers positive for HBeAg / 南方医科大学学报

<p><b>OBJECTIVE</b>To explore the relationship between the syndrome types in traditional Chinese medicine (TCM) and serum HBV DNA load in chronic HBV carriers positive for HBeAg.</p><p><b>METHODS</b>According to the TCM syndrome types, 185 chronic HBV carriers with HBeAg positivity were classified into single syndrome group (liver Qi depression, kidney Qi deficiency, spleen Qi deficiency, and kidney Yang deficiency), compound syndrome group, and unidentifiable syndrome group; based on the nature of the condition in TCM terms, the patients were classified into excess syndrome group, deficiency syndrome group and comorbidity syndrome group. The serum HBV DNA levels in these cases were analyzed in relation to the TCM syndrome types and disease nature.</p><p><b>RESULTS</b>HBV DNA levels showed no significant difference among the patients with single syndrome, compound syndromes and unidentifiable syndrome (F=0.910, P=0.404), nor among the patients with the 5 different single TCM syndromes (χ²=4.672, P=0.323) or those with different disease nature (F=0.631, P=0.596).</p><p><b>CONCLUSION</b>Serum HBV DNA level can not be considered as the evidence for syndrome differentiation in chronic HBV carriers with positive HBeAg.</p>

Identification of salivary biomarkers in breast cancer patients with thick white or thick yellow tongue fur using isobaric tags for relative and absolute quantitative proteomics / 中西医结合学报

To explore the presence of informative protein biomarkers in the salivary proteome of breast cancer patients with thick white or thick yellow tongue fur.

Effects of Jiawei Buyang Huanwu Decoction on vascular stenosis and oxidative stress after balloon injury of rabbit iliac artery / 中国组织工程研究

BACKGROUND:Modern pharmacological studies have confirmed that Buyang Huanwu Decoction could expand blood vessels,improve microcirculation,decrease oxidative stress,Inflammation and platelet activation,so protect and improve the function of endothelial cells.But its certain mechanism is still unclear,especially for its impact on the restenosis of the coronary artery after percutaneous transluminal coronary angioplasty(PTCA).OBJECTIVE:To investigate the protective effects of Jiawei Buyang Huanwu Decoction on vascular stenosis and oxidative stress after balloon injury of rabbit iliac artery.METHODS:New Zealand rabbits,were randomized and divided into three groups,control group,model group and drug group respectively.Rabbits of control group were fed with common forage,but model group and drug group fed with high fat diet.Two weeks later,the iliac arteries were injured by balloon for model group and drug group.Meanwhile drug group were fed with Jiawei Buyang Huanwu Decoction after the operation,2 mL/kg per day.Control group underwent sham operation control.At the end of4 weeks,serum samples were stored to assay the levels of cholesterol,activity of superoxide dismutase(SOD)and levels of malondialdehyde(MDA).Injured iliac artery was fixed by neural formalin to observe the endothelial hyperplasia by light microscope,and the results were analyzed by picture analysis system.Differences of measurement were compared with one-way analysis of variance as well as repetitive measurements analysis of variance.RESULTS AND CONCLUSION:Iliac artery intima was thin,with Intact structure,without arteriosclerosis In the control group.The vascular lumina were narrower,intima was thicker and there were more enormous arteriosclerosis plaques in model group rabbits.The plaque thickness was reduced and stenosis was mild in drug group.TotaI cholesterol,triglyceridemia,low-density lipoprotein of cholesterol(LDL-C)and MDA levels were significantly lower in the drug group compared with the model group.whereas high-density lipoprotein of cholesterol(HDL-C)and serum SOD levels were significantly greater than the model group(P<0.05).The results showed that Jiawei Buyang Huanwu Decoction has significant preventive effect on intimal hyperplasia and the development of artherosclerosis in rabbits with iliac artery injury,and the mechanism of which may be related to modifying lipid metabolism and cleaning oxygen free radical anti-oxidative stress.

Protective effects of extract of Ginkgo biloba on adriamycin-induced heart failure and its mechanism: role of ghrelin peptide / 中国中药杂志

<p><b>OBJECTIVE</b>To explore the protective effects of extract of Ginkgo biloba (EGB) in adriamycin (ADR)-induced heart failure (HF) and the mechanism of ghrelin peptide.</p><p><b>METHOD</b>Wistar rats were randomly divided into three groups: control group, HF group and EGB group. ADR was injected in the rats of HF group and EGB group by caudal vein. After the last injection, the rats in EGB group were given intra-gastric administration of EGB solution (100 mg x kg(-1) x d(-1)). Three weeks later, cardiac function was detected; Ghrelin levels in plasma and myocardium were measured by radio-immunology assay (RIA); High energy phosphates (HEP) contents in myocardium were measured by HPLC; Myocardial gene expression of ghrelin was measured by RT-PCR.</p><p><b>RESULT</b>Compared with control group, HF group had obviously decreased index of cardiac function, and these indexes such as +/- dp/dt max in EGB group were higher than those in ADR group. Plasma ghrelin level in HF group was higher than that in control group while myocardial ghrelin level was significantly lower than that in control group. Myocardial ATP content and gene expression of ghrelin mRNA in HF group were significantly lower than those in control group; Plasma ghrelin level in EGB group was significantly increased. Myocardial ATP content and gene expression of ghrelin mRNA in EGB group were significantly higher than those in HF group, and were closed to those of control group.</p><p><b>CONCLUSION</b>Myocardial energy dysfunction is an important reason of ADR-induced HF. EGB therapy can improve cardiac function and energy metabolism in HF rats, partly because it might increase the expression and production of ghrelin, which can promote positive energy metabolism.</p>

Delayed preconditioning reduced apoptosis of myocardial cells in rats / 基础医学与临床

Objective Investigate the relation between decrease of apoptosis caused by delayed preconditioning and expression of SMAC and XIAP.Methods Sprage-Dawleyt rats were divided into four groups: control,sham,I/R and IPC/SWOP.The rats in I/R group underwent ischemia for 1 hour by classic artery ligation and reperfusion for 1 hour.The rats in IPC/SWOP group underwent tree cycles of 5-minute ischemia and 5-minute reperfusion 24 hours prior to the index occlusion.Cell apoptosis was measured by flow cytometry,the activity of caspase-3 was also measured.The expression of SMAC and XIAP in cytosol of myocardial cell was measured by Western blot.Results Cell apoptosis rate,activity of caspase-3 and expression of SMAC significantly increased in I/R as compared with control(P

Study on relationship between the glossoscopy objectivised image and kidey-biopsy pathology type of patients with primary glomerulopathy / 中华中医药杂志

Objective :To investigate relationship between the glossoscopy objectivised image and kidey-biopsy pathology type of patients with primary glomerulopathy.Methods: The tongue image(including color clustering of tongue images and tongue shapes) of 66 patients with primary glomerulopathy were taken by Snakes Algorithm of Tongue Image Handling System and pathology diagnosis of kidney was also done in the same time,t-test was adopted to analyse the correlation of the glossoscopy objectivised image and kidey-biopsy pathology type of patients.Result: The result show that there are significant differences among tongue images of different pathology types(P

Recent advances of research on warming therapy / 中西医结合学报

Therapeutic method is an important component of traditional Chinese medicine theory. Research on warming therapy focuses on pharmacology at present. Studying the feature of nerve-body fluid-metabolism-function in cold syndrome is of importance for illustrating the nature of warming therapy and elucidating the function of medication. This review presents the research and development of warming therapy in order to provide enlightenment for the research of therapeutic method from the aspects of traditional Chinese medicine and western medicine.

Role of heat shock protein in regulation of JNK and apoptosis / 中国病理生理杂志

Cell protection from stresses by heat shock protein (HSP) was previously attributed to its ability to prevent aggregation and to accelerate refolding of damaged proteins. It plays an important role in cell survival after extremely harsh protein damaging treatment leading to necrotic cell death. On the other hand, protein repair function of HSP cannot explain how it protects cell from stresses which do not cause direct protein damage. These stresses kill cell through activation of apoptotic program. Recently it has been found that HSP can meditate suppression of a stress-activated protein kinase, JNK, an early component of stress-induced apoptotic signaling pathway.These observations can provide a basis for HSP's function of anti-apoptosis.

Changes of ceramide and apoptosis during myocardial ischemia/reperfusion / 中国病理生理杂志

AIM: To study the change of myocardial ceramide during myocardial ischemia/reperfusion and the relationship between ceramide and apoptosis and oxidative stress. METHODS: After inducing myocardial ischemia/reperfusion (I/R) injury in mice with pituitrin (Pit), myocardial SOD activity and MDA content were measured. DNA agarose gel electrophoresis and fluorescent staining of DAPI were done to check up apoptosis. The content of myocardial ceramide (?g/kg) was measured through HPTLC and scan of thin plate. RESULTS: The myocardium of I/R model group had the phenomenon of DNA ladder. Apoptosis index and ceramide content in I/R model group were higher than those in normal control group (P

Changes of related proteins of neural stem cell differentiation and proliferation in rats treated with corticosterone / 中国病理生理杂志

AIM: To explore the changes of related proteins of neural stem cell differentiation and proliferation in rats treated with corticosterone (CORT). METHODS: Western blot method was used to investigate the changes of related protein of neural stem cell differentiation and proliferation. RESULTS: Compared with the normal control group, related proteins (Notch1, hes5, Mash1 and NeuroD) of neural stem cell differentiation and proliferation were significantly decreased in the CORT rats on the day 30 and 60, especially for Mash1 and NeuroD (P

Role of Akt signal pathway in inhibition of neuronal apoptosis by Chinese medicine Zuogui pill in adult rats treated with monosodium glutamate / 中国病理生理杂志

AIM: To explore the role of Akt signal pathway in apoptosis of neural cells in adult rats treated with Zuogui Pill, a Chinese medicine. METHODS: Flowcytometry and Western blotting methods were used to investigate the changes of cellular apoptosis rate and Akt signal pathway. RESULTS: Monosodium glutamate (MSG) could increase cellular apoptosis rate and significantly restrained the phosphorylation of Akt (Ser473) and Akt (Thr308), and markedly increased the levels of phospho-FKHR (ser256), GSK-3? (Ser9) and PTEN. Zuogui Pill partly inhibited the above effects of MSG. CONCLUSION: Zuogui pill effectively inhibits the neural apoptosis induced by MSG, and Akt pathway is involved in the neuronal protection of Zuogui pill. [

Mechanisms of heart failure induced by adriamycin / 中国病理生理杂志

AIM: To investigate the changes of cardiac function, oxidative stress and apoptosis in myocardium of rat model of heart failure induced by adriamycin (ADR). METHODS: At the end of the study, we observed content of malondialdehyde (MDA), activity of superoxide dismutase (SOD) and apoptosis. Expression of P53 protein and p53 mRNA were measured with immunohistochemical method and RT-PCR, respectively. RESULTS: Our data showed that content of MDA increased, activity of SOD decreased and apoptosis in myocardium happened while cardiac function decreased after ADR treatment. p53 gene expression and P53 protein obviously increased in heart failure group. CONCLUSION: There were oxidative stress and apoptosis occurred significantly in a model of heart failure induced by ADR. p53 gene might play an important role in the apoptosis. Correlation analyses suggested that apoptosis in myocardium is related to oxidative stress in ADR-induced heart failure.

The protective effects of angiotensin Ⅱ receptor blocker irbesartan on kidney function in diabetic rats / 中国病理生理杂志

AIM: To investigate the effects and mechanisms of irbesartan,one of the angiotensin Ⅱreceptor blockers,on kidney function in diabetic rats. METHODS: Forty adult male Wistar rats were randomly divided into four groups: control group,diabetes group,irbesartan group and captopril group. At the end of 12 weeks,the rats were sacrificed. Urine volume,body weight,kidney weight/body weight,plasma,glucose,glycosylated hemoglobin (HbA_1c),urinary ?_2-microglobulin (?_2-MG) excretion,urinary albumin excretion rate (UAR),creatinine clearance (Ccr) were measured. Nitric oxide (NO) and endothelin-1 (ET-1) levels in plasma,urinary and renal tissues were determined. RESULTS: Urine volume,kidney weight/body weight,plasma glucose,HbA1C,UAR,Ccr,urinary ?_2-MG excretion,NO and ET-1 levels of urinary,blood and renal tissue in diabetic rats were significantly higher than those of normal controls ( P

Dynamic changes of the concentration of nitric oxide in ischemic myocardium and its mechanism / 中国病理生理杂志

AIM: The study was undertaken to explore the dynamic changes of the concentration of nitric oxide(NO) in ischemic myocardium and its mechanism.METHODS: In vivo myocardial ischemia of mice and in vitro perfused isolated heart of rat were used in the experiment. The effects of severity and time of ischemia on NO production, NOS activity and mRNA were examined, respectively. RESULTS: There was a considerable difference (P

Effects of external counterpulsation on renin-angiotensin system and hemodynamics in dogs with myocardial ischemia / 中国病理生理杂志

AIM: To examine the effect of external counterpulsation(ECP) on renin-angiotensin system(RAS) and hemodynamics in dogs with myocardial ischemia and their relationship. METHODS: Acute myocardial ischemia was induced by occluding the left anterior descending of the dogs. The local renin activity, angiotensin Ⅱ(AngⅡ) level, angiotension-converting enzyme(ACE) activity were tested by biochemical methods and hemodynamics was recorded by a 8-channel physiological recorder. RESULTS: Ischemia could actiivate renin,ACE and AngⅡ in cardiovasculature and ECP reduced them except for renin in ischemic myocardium. Ischemia also could activate RAS in lung and kidney, which play an important role on circulating RAS, and ECP reduced them. Furthermore, ECP could improve hemodynamics and there existed a close relationship between local AngⅡlevel and hemodynamics. CONCLUSION: ECP can reduce local RAS and improve hemodynamics in dogs with myocardial ischemia, which might be one of mechanisms underlying the protective effect of ECP on ischemic myocardium.

Hyperhomocysteinemia induces endothelial dysfunction and aggravates microcirculation dysfunction and microthrombosis / 中国病理生理杂志

AIM:To establish a microthrombus model by carrageenan (Ca)/ lipopolysaccharides (LPS) intraperitoneal injection in rats with hyperhomocysteinemia (HHcy) and endothelial dysfunction induced by L-methionine intake. METHODS: ① Male Sprague Dawley rats were randomly divided into 2 groups: control and endothelial dysfunction (HHcy) groups. L-methionine was administered by gavage in HHcy group for total 4 weeks. Purified water was administered by gavage in control rats. Plasma Hcy, NO and vWF were examined and the thoracic aorta were excised after 4 weeks of L-methionine treatment to evaluate endothelial function. ② Male Sprague Dawley rats were randomly divided into 3 groups to establish a microthrombus formation model with Ca/ LPS: control, microthrombus formation (Ca/LPS) and endothelial dysfunction plus mitoarothrombus formation (HHcy+Ca/LPS) groups. Control rats were injected with normal saline (NS). Ca/LPS rats were intraperitoneally injected with carrageenan (Ca) and followed by lipopolysaccharides (LPS) 16 h later. HHcy+Ca/LPS rats were intragastric gavaged by L-methionine for total 4 weeks, and then were injected with Ca/LPS in the same way as Ca/LPS group. Cruor parameters and platelet count were detected at 20 h after LPS or NS injection and the mesentery microcirculation was monitored. Plasma NO and vWF were also detected at 24 h after LPS or NS injection. RESULTS: ① Plasma Hcy concentrations and vWF level were significantly increased in HHcy group, while plasma NO content was significantly decreased compared with that in control group. Endothelial dependent relaxation (EDR) of aortic rings was significantly decreased in HHcy group, suggesting endothelial damage/dysfunction was induced by HHcy. ② Mesentery capillary was obviously blocked by microthrombus in Ca/LPS rats and was blocked more seriously in HHcy+Ca/LPS rats. Cruor parameter results suggested that Ca/LPS rats were in hypercoagulable phase and HHcy+Ca/LPS rats were in hypocoagulable phase at 20 h after LPS injection. Platelet count and plasma NO content in HHcy+Ca/LPS group were significantly decreased, while plasma vWF level was significantly increased compared with Ca/LPS group. CONCLUSION: L-methionine intake induces severe HHcy and causes endothelial dysfunction in rats. Microcirculation dysfunction and microthrombosis can be caused by Ca/LPS intraperitoneal injection and may be aggravated by endothelial dysfunction.

Expression of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs) in hepatocellular cell lines transfected by PRL-2 gene / 中国病理生理杂志

AIM: To investigate the possible mechanism of PRL-2 in invasive metastasis of tumors.METHODS: The PRL-2 vector was transfected into CL1 cell with lipofectamine reagent,the transfectants were selected by growth in the medium supplemented with G418.Zymographic analysis of metalloproteinases(MMPs) activity was performed,RT-PCR was used to determine the mRNA levels of(MMP-2),MMP-9,TIMP-1 and TIMP-2,the protein levels of(MMP-2),MMP-9,TIMP-1 and TIMP-2 were analyzed by Western blotting.The effects of the special inhibitor of PRL-2 on transfected cells were also observed.RESULTS: The stable cell line selected by G418 was identified by RT-PCR and Western blotting.More abundance of MMP-2,MMP-9 and its activated type were secreted by the CL-1-PRL-2 cells than untransfected cells and transfected vector cells(P

Effects of external counterpulsation on nitric oxide system in myocardial infarction canines / 中国病理生理杂志

AIM: To investigate the effects of external counterpulsation (ECP) on nitric oxide (NO) and nitric oxide synthase (NOS) and the expression of NOS gene in myocardial infarction canines. METHODS: Nineteen healthy dogs were randomly divided into three groups ie. controls, ischemia group, ischemia and ECP group. Serum NO concentrations and myocardium NO levels and NOS specific activity were determined by modified nitrate reductase method. The protein synthesis of sub-type NOS including inducible NOS (iNOS) and endothelial NOS (eNOS) of myocardial tissue were also determined by immunohistochemical method. The constitutive NOS (cNOS) mRNA was measured via in situ hybridization. RESULTS: 120 and 180 minutes after the ligating of LAD, serum NO concentration in ECP groups were higher than those in ischemic groups (P

Effect of tongxinluo capsule on endothelial function in stable angina pectoris patients / 中国病理生理杂志

AIM: To investigate clinical effect of tongxinluo capsule in treating stable angina pectoris patients, and its influence on endothelial function, superoxide dismutase (SOD) and malondialdehyde (MDA). METHODS: One hundred and twenty-four stable angina pectoris patients were divided into three groups, isosorbide treatment group (41 cases), tongxinluo capsule treatment group (40 cases), tongxinluo and isosorbide treatment group (combined treatment group, 43 cases). The serum concentrations of nitric oxide (NO), endothelin-1 (ET-1), SOD and MDA were determined before and after treatment. The data in traetment groups were compared with that in normal control. RESULTS: The symptoms of 3 groups were significantly improved, and the total effective rate of tongxinluo capsule group and combined treatment groups were better than that in isororbide treatment group (85.00% and 88.37% vs 73.17%, P