Objective To investigate the cardiomyocyte apoptosis and protein expressions of bcl-2 and bax in adriamycin (ADM)-induced myocardial damage in rats treated with neuregulin-1? (NRG-1?).Methods Sixty male SD rats weighing 200 to 250 g were randomly divided into 3 groups:control,ADR-DCM and ADR+NRG groups.ADR-DCM group (n=20) was weekly injected 2.0 mg/kg of ADR via tail vein once a week for 8 weeks to produce cardiomyopathy.The rats of ADR+NRG group (n=20) was given an injection of NRG-1? at 10 ?g/(kg?d) via tail vein for 5 d after the establishment of cardiomyopathy by ADR injection.The animals from control group (n=20) received 2 ml/kg normal saline by injection,once a week for 8 weeks.Nine weeks later,rats were executed under anesthesia and their heart was resected.Apoptotic cardiomyocytes were detected by using the terminal deoxynucleotidyl transferase mediated dUTP nick end labeling (TUNEL) method.The expressions of bcl-2 and bax protein were determined by Western blotting.Results The index of apoptotic cardiomyocytes was increased significantly in ADR-DCM group and ADR+NRG group compared with control group (P

Objective To study the adriamycin(ADR)-induced expression of ErbB4 in and apoptosis of cardiac muscle cells of rats with dilated cardiomyopathy and their intervention with neuregulin-1?.Methods Sixty male SD rats,weighing 200-250 g,were randomly divided into ADR 1 group(n=10),ADR 2 group(n=20),ADR+neuregulin-1? group(n=20),and normal control(NC) group(n=10).Rats in ADR1 and ADR2 groups were injected with 2.0 mg/kg of ADR through the tail vein,once a week for 8 and 12 weeks,respectively.Rats in ADR+neuregulin-1? group were injected with 2.0mg/kg of ADR through the tail vein,once a week for 8 weeks,followed by neuregulin-1? [10 ?g/(kg?d)],once a day for 5 d.Rats in NC group received normal saline [2 ml/(kg?d)],once a week for 8 weeks.Expression of ErbB4 was detected by Wes-tern blotting.Lesions of cardiac muscle were scored with HE staining.Apoptosis of cardiac muscle cells was detected with the TUNEL method.Results The apoptotic index of cardiac muscle cells was significantly lower in ADR+neuregulin-1? group than in ADR 1 group(P

Objective To establish the standard for the quality control of Shanlamei Granule.Method Chimonanthus nitens Oliver.was identified quantitativ ely by thin -layer chromatography(TLC),quercetin and kaempferol in Shanlamei Granule were determined by RP -HPLC.Results The TLC Spots were highly clear without the interference of negative control and were reproductive.The c alibration curve for quercetin was l inear(r =0.9999)in the range of 1.61～25.72?g /mL and the mean recovery was 98.89%,RSD being 1.21%(n=5);for Kaempferol ,the calibration cu rve was linear(r =0.9999)in the range of 2.16～34.60?g /mL and the mean recovery was 97.75%,RSD being 1.53%(n=5).Conclusion This method is accurate,simple,sensitive and reliable,and it can be used for the quality control of Shanlamei Granule.

Objective To observe the influence of Edaravone on the level of serum gastrin and efficacy in patients with craniocerebral injury.Methods 60 patients with craniocerebral injury were randomly divided into Edaravone group(30 cases) and Dexamethasone group(30 cases).Then each group received corresponding treatment.The level of serum gastrin was detected at 1st d,3rd d,5th d and 7th d after treatment.The curative effect was evaluated based on the neuroligical deficit score(NDS) and Barthel index(BI) one month after treatment.Results The level of serum gastrin in Edaravone group began to decrease at the 3rd d after treatment,at the 5th d and 7th d became to normal value.While,in Dexamethasone group 5th d after treatment,the level of serum gastrin began to decrease,but at the 7th d was still significantly higher than the normal value.The levels of serum gastim at 3 d,5 d and 7 d after treatment were significant difference between the two groups(P

As a result of observation in lab. ,it showed that the rice straw attracted snail well,it at-tracted uninfected and infected snails, and adult and young snails respectively without singnificant difference. On this basis,we can investigate the snails under water by rice straw curtains during water raising season. This paper reported that the method for weaving rice straw curtain fixed by stone,and using foamed plastics as buoy were easy and convenient. The rate of snail-attraction was highest when it took 14 hours ,especially in August.

Objective To study the optimization of extraction technology for total flavonoid-aglycone from Scutellaria baicalensis after enzymatic hydrolysis. Methods With three factors of alcohol concentration, dosage and speed of percolation as the indexes, orthogonal experiment was performed. Concentrations of Baicalein, Wogonin and oroxylin-A were analyzed by HPLC. Results The optimal extraction technology is A2B3C2: extracting the medical material by 10 times(V) 95 % alcohol, the speed being 6 mL/kg per min. Conclusion Under optimal extraction technology, extraction rate of total flavonoid-aglycone is very considerable and the concentration is high to 60 % .

Objective To evaluate the effects of recombinant human neuregulin-1? on a rat model of adriamycin-induced dilated cardiomyopathy(ADR-DCM).MethodsMatched adult male Sprague-Dawley rats were administered with 2.5 mg/kg adriamycin intravenously once a week for 10 weeks to establish models of ADR-DCM.The ADR-DCM rats were randomly divided into 3 groups as follows: the rhNRG-1? group(rhNRG-1?,20 ?g/kg,i.v.,once a day for 10 d,n=8),the negative control group(excipient,n=8),and the positive control group(digoxin,0.062 5 mg/kg,i.v.,once a day for 10 d,n=7).Another 8 normal SD rats in the same situation served as normal control group(control,n=8).Their heart function and hemodynamics were evaluate after the treatment.The ratio of heart weight/body weight was calculated and the thickness of LV parietes was measured.The pathological lesions of cardiac muscle tissues were evaluated after HE staining.Brain contents of natriuretic peptide(BNP) and troponin T(TnT) were determined.The animal treatment was all accorded to the ethical standards.ResultsCompare with the normal control group,the LVESD and LVEDD of ADR-DCM rats were increased(P

ObjectiveTo investigate the relationship between the oxidative injury induced by low glucose and mitochondrial membrane potential in HUVEC-12 cells. Methods Human umbilicalvein endothelial cells HUVEC-12 were cultured in low concentration glucose for 4 h.Cell viability of HUVEC-12 cell was assessed with MTT assay.Dihydroethidium (DHE) was used as a reactive oxygen species (ROS)capture, which was detected the mean fluorescence intensity of samples and Rhodamine 123 as a fluorescence detector was to measure the level of mitochondrial membrane potential (MMP) in cells.Results Comparing to HUVEC-12 cells viability in 5.5 mmol/L glucose group (96.80 ±3.20)％, cells exposed to 2.8 mmol/L glucose group (66.40 ± 1.60) ％ and 0 mmol/L glucose group (58.93 ± 1.67) ％ were decreased by 32％ and 40％ respectively (P ＜ 0.01).ROS level of 5.5 mmoL/L glucose group, 2.8 mmol/L glucose group and 0 mmol/L glucose group were 0.59 ± 0.02, 0.74 ± 0.04 and 0.88 ± 0.05,respectivdy, increased by 25％ in cells exposed to 2.8 mmol/L glucose and by 48％ in cells without glucose exposure comparing to 5.5 mmol/L glucose group (P ＜0.01) ; MMP levels of 5.5 mmol/L glucose group,2.8 mmoL/L glucose group and 0 mmoL/L glucose group were 148.83 ± 3.51, 271.07 ± 19.54 and357.74 ±51.32 respectively, increased to 1.8 times in cells exposed to 2.8 mmol/L glucose and to 2.4times in cells without glucose exposure comparing to 5.5 mmoL/L glucose group (P ＜ 0.01).Conclusion Low glucose leads to injury in HUVEC-12 cells, which is probably induced by the oxidative stress via the increasing MMP.

The motor function of the trunk in 10 hemiplegic patlents was evaluated with Biodex Sys- tem Ⅱisokinetic testing aparatus. The result shows that the strength of flexors and extensors of the trunk,especially the flexors,becomes weaker(The ratio of flexors to extensors is less than 1).The patients weretreated with a series of the trunk retraining methods. The motor function of the trunk was improved aftertreatment(P<0.01 ).The total motor function(Fugl-Meyer Assessing Scale)also makes significant progress(P<0.01).The study proposes that the retraining and regaining of the trunk motor function in hemiplegiais quite important not only to the trunk but also to total motor function.

ObjectiveTo explore the effect of estrogen on osteoblast apoptosis induced by serum hungry in vitro.MethodsOsteoblasts of second or third generation from newly born SD rats calvaria were divided randomly into the control group, serum hungry group and serum hungry with estrogen group. Cells of each group were incubated for 24 h, 48 h, 72 h, 5 d, 7 d and 14 d, then labeled using TUNEL staining and examined for morphological characteristics of apoptotic cell under light microscopy after incubated for 72 h. The rates of apoptotic cells of each group were examined with flow cytometry.ResultsThe cells of the control group showed normal appears, the serum hungry group had many cells with purple and blue particles in nuclei, but serum hungry with estrogen group had less such cells. The rate of apoptotic cell significantly increased in serum hungry group and decreased in serum hungry with estrogen group compared with the control group examined with flow cytometry (P<0.05).ConclusionEstrogen can repress osteoblasts apoptosis of rats induced by serum hungry.