Objective To investigate into the protective effects of rosiglitazone on rat kidney fibroblasts(NRK)damaged by high glucose.Methods From Jan.2005 to Sep.2005,the NRK cells were cultured in vitro,and were divided into five groups:normal glucose group(NG,1 000 mg/L D-glucose),high glucose group(HG,4 500 mg/L D-glucose),HG+RGZ(5 ?mol/L),HG+RGZ(10 ?mol/L)and HG+RGZ(15 ?mol/L).The mRNA expressions of T MMP-1、TIMP-1 and Collagen Ⅲ were measured with RT-PCR.Results Compared with NG group,the mRNA expression of MMP-1 decreased markedly in HG group(P

Objective To investigate the effects of rosiglitazone on the expression of peroxisome proliferator-activated receptor-γ (PPARγ) and matrix metalloproteinase-9 (MMP-9) in renal interstitial fibroblasts induced by cyclosporine A, and discuss renal protective effect of rosiglitazone on renal toxicity of cyclosporine A. Methods Construction, screening and amplification of the target siRNA vector for PPARγ were carried out.The inhibitory effect of siRNA on the expression of PPARγ in normal rat kidney (NRK) cells was evaluated.NRK cells were cultured in the routine way.Experimental groups: (1)control group:single NRK cells without treatment; (2)RGZ group:NRK cells with RGZ (10 μmol/L); (3)CsA group:NRK cells with CsA (1.0 mg/L); (4)CsA+RGZ group:NRK cells with CsA (1.0 mg/L) plus RGZ (10 μ mol/L); (5)CsA+RGZ+siRNA group:pRNAT-U6.2/Lenti-PPARγ-236 plasmid transfected into NRK cells,then CsA (1.0 mg/L) plus RGZ (10 μmol/L).The mRNA expression of PPARγ was detected by real-time RCR.The mRNA expressions of MMP-9 and TIMP-1 were detected by RT-RCR.The protein expression of FN was detected by Western blotting. Results CsA up-regulated the mRNA level of PPARγ,MMP-9 and TIMP-1 (P＜0.05),and the up-regulation was inhibited by RGZ significantly (P＜0.05).The application of PPARγ siRNA resulted in the decreasing of PPARγ mRNA (P＜0.05),and partly reversed the inhibition effect of RGZ on MMP-9 and TIMP-1 mRNA (all P＜0.05).CsA up-regulated the protein level of FN (P＜0.05),and this effect was significantly inhibited by RGZ (P＜0.05).The application of PPARγ siRNA could reverse the inhibition effect of RGZ on FN protein expression (P＜0.05). Conclusion RGZ can inhibit the expressions of FN,MMP-9 and TIMP-1 induced by CsA which may be the mechanism of the protective effect of RGZ on renal interstitial fibrosis induced by CsA.

ObjectiveTo observe the effects of different doses of Xuebijing on cerebral cortex apoptosis factors bcl-2 and bax in rats at early stage after cardiopulmonary resuscitation (CPR).Methods Thirty-two healthy SD rats aged 12 weeks were divided into four groups by using a random number table method (each,n = 8); all the rats were intubated through the opening of tracheotomy, and the blood pressure was measured through the left/right femoral artery catheter. Asphyxiation was applied to rats, resulting in cardiac arrest (CA), and then cardiopulmonary resuscitation (CPR) was carried out. After restoration of spontaneous circulation (ROSC), 0.9% normal saline 8 mL/kg, 0.9% normal saline 4 mL/kg + Xuebijing 4 mL/kg, 0.9% normal saline 2 mL/kg + Xuebijing 6 mL/kg and Xuebijing 8 mL/kg were given to model group, Xuebijing low dose group, middle dose group and high dose group respectively. The rat body weight, time of CA, CPR-ROSC time, ROSC ratio and the amounts of dopamine and 0.9% saline used in 24 hours were recorded. The positive protein expression levels of bcl-2 and bax in rat cerebral cortex and the ratio of bcl-2/bax was measured at 24 hours after ROSC.Results Compared with the model group, the amount of 0.9% normal saline (mL: 4.2±1.2, 2.6±1.0, 2.5±1.0 vs. 5.5±1.1,P < 0.05) and of dopamine used in 24 hours (μg: 1865±189, 1376±197, 1215±145 vs. 3526±141,P < 0.05), the levels of positive protein expression of bcl-2 (%: 33.4±4.3, 25.5±4.6, 26.1±4.2 vs. 38.5±5.1), and of bax at 24 hours after ROSC (%: 39.5±4.3, 32.8±3.8, 31.9±3.7 vs. 44.3±5.1) and the ratio of bcl-2/bax (0.87±0.16, 0.72±0.13, 0.71±0.14 vs. 0.89±0.11) was significantly decreased in low, middle and high dose groups (allP < 0.05). Compared with the low dose group, the amount of 0.9% normal saline and dopamine used in 24 hours, protein expression levels of bcl-2 and bax at 24 hours and the ratio of bcl-2/bax in middle dose and high dose groups were all lower than those in low dose group (allP < 0.05).Conclusion Xuebibing 6 mL/kg applied at early stage after CPR in rats may show relatively good protective effect on cerebral cortex.

OBJECTIVE:To study the stability of baicalin magnesium salt. METHODS:The stability of baicalin magnesium salt at high temperature(60 ℃),high humidity(90%),strong illumination(4000 lx),different temperatures(20,37,50,60 ℃) and pHs(6.80,5.70,4.60,4.30,3.90,3.60,3.20) was investigated,and HPLC was used to detect the drug contents. RESULTS:High humidity test indicated that the quality of baicalin magnesium salt was increased by (6.17 ± 0.12)% in the 5th day and in-creased by(6.92±0.05)% in the 10th day. Drug contents in the 10th day were respectively(94.78±0.12)%,(94.79±0.20)%, (94.66±0.15)% in the high temperature,high humidity,strong illumination tests(n=3). In phosphate buffer solution(pH 6.80), baicalin magnesium salt was stable only when the temperature was below 20 ℃;and it was yet stable in pure water(pH 6.76)at 37 ℃. pH stability test showed that the most stable pH was 4.30. CONCLUSIONS:Baicalin magnesium salt has hygroscopicity to some extent. Strong illumination affects the stability more seriously than high temperature and high humidity. The stability of ba-icalin magnesium salt in pure water is superior to in phosphate buffer solution,and the salt is stable in weak acid solution.

Objective To investigate the protective effects of rosiglitazone (RSG) on normal rat kidney cells (NRK) damaged by cyclosporine A(CsA). Methods The NRK cells were cultured with CsA or with CsA plus rosiglitazone. The cellular proliferation was determined by MTT colorimetry. The mRNA expression of TGF-?1 and PPAR? was detected by RT-RCR. Protein levels of PPAR?, p-ERK,FN and AT1R were examined by Western blotting. The level of TGF-?1 in the supernatants was measured by enzyme-linked immunosorbant assay (ELISA). Results CsA inhibited the proliferation of NRK cells in dose and time dependent manner (P

OBJECTIVE: To investigate the effect of Xuebijing injection on the cardiac function and calcium ions of cardiocyte in rats after anoxia-induced cardiac arrest-cardiopulmonary resuscitation(CA-CPR).METHODS: CA-CPR model was induced in rats and then the model rats were randomized to 4 groups,i.e.sham group,model group,Xuebijing injection high dose group(4 mL?kg-1),and Xuebijing injection lowdose group(Xuebijing injection 2 mL?kg-1).Mean arterial pressure(MAP),?LVdp/dt max,average fluorescence intensity of calcium and pathological changes of cardiocytes were observed at 0 and 6 hours after resuscitation,respectively.RESULTS: Compared with model group,Xuebijing ingection high dose group at 6 h showed significantly increased MAP(P

Objective To investigate the protective effects of ulinastatin on the hearts of rats with anoxia-induced cardiac arrest-cardiopulmonary resuscitation(CA-CPR) and the mechanism of improving cardiac dysfunction .Methods Twenty male Sprague Dawley(SD) rats were randomly divided into three experimental groups :sham operation group (group A ,n= 8 ,only anesthesia , tracheotomy tube and vascular puncture) ,control group(group B ,n= 6 ,normal saline 4 mL · kg -1 injected via vein) ,Ulinastatin treatment group(group C ,n=6 ulinastatin 50 000 U/kg+normal saline 3 mL · kg -1 injected via vein);Factors including mean arte-rial pressure(MAP) ,left ventricular end diastolic pressure(LVEDP) ,the maximum rising and falling rates of left ventricular deep pressure(± LVdp .dt-1max) ,brain natriuretic peptide(BNP) ,cardiac troponin T(cTNT) ,IL-12 and TNF-αwere observed at setting time before and after cardiopulmonary resuscitation in rats .Results Compared with those of the group A and before CA-CPR ,the concentrations of IL-12、cTNT、TNF-α、BNP、and LVEDP increased(P<0 .01)while ± LVdp .dt-1max decreased(P<0 .01) at 6 h after CA-CPR in group B ,C .Compared with those of group B ,the concentrations of IL-12、CTNT、TNF-α、BNP and LVEDP of 6 h after CA-CPR in group C were lower and ± LVdp .dt-1max was higher(P<0 .01) ,The concentrations of MAP of 6 h after CA-CPR in group B was lower Compared with that of group A ,C and before CA-CPR(P<0 .01) .Conclusion Ulinastatin can improve cardiac dysfunction by depressing mediators of inflammation and reducing myocardial injury .

Objective To investigate the effect of rosiglitazone on renal interstitial fibrosis in chronic cyclosporine nephropathy (CCN) rats.Methods Twenty-eight rats were randomly assigned to control group,rosiglitazone (RGZ,5 mg·kg-1·d-1) group,cyclosporine A(CsA,15 mg·kg-1·d-1) group,rosiglitazone (5 mg·kg-1·d-1) +CsA group.Real-time PCR and RT-PCR methods were used to investigate the expressions of OPN,RANTES on the 14th day and MMP-9,TIMP-1 on the 35th day in kidney of CCN respectively.Results In comparison with control group,the expressions of OPN,RANTES,MMP-9,TIMP-1 in CsA and RGZ+CsA groups were increased (P＜0.05).In comparison with the CsA group,the expressions of OPN,RANTES,MMP-9,TIMP-1 in CsA+RGZ group significantly decreased (P＜0.05).Conclusion Rosiglitazone may protect renal tissue after CCN by decreasing expressions of OPN,RANTES,MMP-9,TIPM-1.

Purpose To investigate the clinicopathological features,diagnosis and differential diagnosis of myxoid synovial sarcoma (MSS).Methods Clinicopathological changes and immunophenotype were retrospectively evaluated in two MSS cases collected from Fujian Provincial Hospital,conbined with genetic mutation analysis.The relevant literatures were reviewed to explore its clinical and pathological features of this tumor.Restilts The two cases,one man and one woman,aged 71 and 15years,respectively.Tumor was located in the left down abdomen in case 1,and left frontal temporal lobe in case 2.Histopathologically,at low magnification in case 1,the tumor was nodular,which was made up of areas of hypercellularity and hypocellularity.In some areas of hypocellularity,the tumor cells were arranged in fascicular,story-form,sheet arrangements with mucoid degeneration.In hypercellularity area,the tumor cells were arranged in fascicular,fish bone-liked arrangenents.At low magnification in case 2,the tumor was nodular,which was made up of areas of hypercellularity and hypocellularity.In hypocellularity area,the tumor cells were arranged in net-like,sheet arrangements,and fascicular,sheet arrangements in case 2.In some area,the tumor cells were epithelioid with cluster distribution,without infringing brain tissue.Immunohistochemically,the tumor cells were diffusely positive for BCL-2,vimentin,and α-SMA and EMA were partially positive,while CD34,CD57,S-100,CD117,PLAP were negative.However,in case 2,only BCL-2 was positive,and MyoD1,GFAP,Olig-2,EMA,Syn,CD99,CgA,S-100,Myogenin,STAT6,CD34,desmin and α-SMA were negative.Molecular detection SYT-SSX fusion gene was detected in both cases.Conclusion MSS is a rare malignancy of soft tissue.The diagnosis of MSS depends on molecular pathology.The clinical and pathological findings are different from mucinous fibrosarcoma and solitary fibrous tumor.The treatment is surgical resection,combined with radiotherapy,with poor prognosis.

Objective To compare the effect of endoscopic ultrasonography (EUS),magnetic resonance chlangiopancreatography (MRCP) and endoscopic retrograde cholangiography (ERCP) in the diagnosis of suspicious intermediate choledocholithiasis.Methods One hundred and eighty-six patients with suspicious intermediate of choledocholithiasis successively received MRCP,EUS,and ERCP examination.The stone taking out by endoscopic as diagnositic standard,and the sensitivity,specificity and accuracy in different methods was compared.Results Sensitivity and accuracy of EUS was significantly higher than that of MRCP [97.5％(155/159) vs.92.5％(147/159),97.3％(181/186) vs.91.9％(171/186)](x2 =4.21,5.30,P =0.04,0.02).There was no statistically significant difference between EUS and ERCP in specificity [96.3％(26/27) vs.88.9％ (24/27)] (x2 =115.40,P ＜ 0.05).Sensitivity,specificity and accuracy of ERCP was 98.9％(184/186),98.7％(157/159) and 100.0％(27/27),and there was no difference between EUS and ERCP in the diagnosis of choledocholithiasis (P ＞ 0.05).Conclusions EUS is similar with ERCP for the diagnosis of choledocholithiasis.By performing EUS or MRCP first,ERCP may be avoided in patients with suspicious intermediate choledocholithiasis.