Objective:To observe the change of myocardial cell and matrix in the rats with type 2 diabetes and to approach the construction method of diabetic cardiomyopathy models in wistar rats with type 2 diabetes mellitus.Method:Sixteen wistar rats of 6 months were randomly divided into normal group(N)and diabetic group(D),with eight rats in each group.Euglycemic insulin clamp technique(EICT)was used to determine insulin resistance(IR).Heart weight(HW)and body weight(BW)of each rat were measured to ratio HW and BW,The apoptosis of myocardial cell was evaluated by TUNEL.,and the ultramicrostructure of.myocardial cell and construction of heart were observed.And immunohistochemistry (SABC method) was used to measure the level of Ⅰand Ⅲ types of collagen protein.Results:compared with group(N),GIR of group(D) was remarkably lower(P

Objective: [WT5”,6BZ]To investigate the anti tumor effects of melittin in vitro . Methods: Melittin was isolated and purified from bee venom by gel filtration. The cytotoxicity of melittin against established cell lines(SMMC 7721,BEL 7402 and Hep 3B cell) was determined using by MTT assays. Mitomycin, vincristine and cinobu facini were used as control. The time effect relationship of melittin against SMMC 7721 cell line was studied. Results: Melittin showed the anti tumor effect in a dose dependent matter for tumor cells in vitro ,but there was no time effect relationship. The anti tumor effect of melittin was better than the control. Conclusion: Melittin has marked and quick anti tumor activity in vitro against established cell lines. [

Objective To investigate the change of renal 1-alpha hydroxylase and its effect on bone mineral density in the old rats with type 2 diabetic nephropathy. Methods Forty Wistar rats of 18 months old were randomly divided into normal control (N), diabetes (D), diabetes treated with vitamin D_ 3 (T1) and diabetes treated with 1-?(OH)D_ 3 (T2) groups, respectively. Ten rats in each group. Dual energy X-ray absorption (DEXA) was used to determine bone mineral density (BMD) of lumbar spines and femoral bone. 24 h urinary protein excretion, serum 25(OH)D_ 3 and 1,25(OH)_ 2 D_ 3 were measured by radioimmunoassay. Results Compared with controls, 24 h urinary protein excretion increased remarkably D, T1, T2 groups, while BMD greatly decreased, much lower in D group and T1 group than T2 group (P0.05). The level of 1,25(OH)_ 2 D_ 3 in N group was the same to T2 group, but higher than D, T1 groups (P

Objective: To observe the inhibitory effects of biotic royal jelly on the ascitic hepatoma cell H22. Methods: Mice bearing H22 tumor were fed on different types of royal jelly: No.1, 2 and 3. Their anti-tumor effects were observed in vivo. The general royal jelly and normal saline were observed as control. Results: Among these biotic royal jelly, the biotic royal jelly No.1 showed obvious tumor-inhibiting and survival-prolonging effects. In addition, it increased the number of WBC and augmented the amount of IL-2 and IFN-γ; the pathological study also indicated the denaturing and necrosis of most tumor cells with nuclei constraining and cell membrane rupturing, and large amount of lymphocytes and plasmacytes infiltrating around the mass. Conclusion: The No.1 biotic royal jelly has obvious anti-tumor effect, and it may take effects by inhibiting or killing tumor cells and improving the immunity of the host.

Objective To investigate the relationship between lipid abnormality and benign prostatic hyperplasia (BPH) in men receiving physical examination. MethodsFour hundred and one people who participated health examination in our hospital in May 2008 were included in the study. They were divided into two groups according to history of disease, IPSS score, the results of digital rectal examination and transrectal ultrasound: BPH group (192 cases) and no BPH group (209 cases). The blood lipid level and risk factors were compared in two groups. ResultsThere were no statistical differences in blood lipid level and risk stratification of cardiovascular disease between the two groups (TG:P=0. 698;TC:P=0. 654;LDL-C:P=0. 880; HDL-C:P=0. 531; risk stratification: P= 0. 251). IPSS score had no obvious correlation with blood lipid level (TG: P = 0. 054 ; TC: P =0. 149; LDL-C: P = 0. 427; HDL-C:P=0. 193) .Conclusions BPH complicated with lipid abnormality is common in the clinics, but the correlation between BPH and lipid abnormality in patients with light BPH is not so clear as that in patients with mild or severe BPH.

OBJECTIVE: To investigate the anti-tumor effect of bufalin and its regulation on Bcl-2 and Bax proteins in orthotopically transplanted tumor of human hepatocellular carcinoma in nude mice. METHODS: Orthotopically transplanted tumor of human hepatocellular carcinoma was established in nude mice. The mice were randomly divided into five groups: high-dose bufalin-treated group (1.5 mg/kg), medium-dose bufalin-treated group (1 mg/kg), low-dose bufalin-treated group (0.5 mg/kg), adriamycin-treated group (8.0 mg/kg), and normal saline-treated group. After 25 days, mice were sacrificed. The tumor volume was measured, and the pathological changes of tumor tissues were detected by HE staining to observe the tumor necrosis degree. Cell morphological changes were also observed by an electron microscopy. Label index of tumor cell apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), and the expressions of Bcl-2 and Bax proteins were determined by immunohistochemical method. RESULTS: The tumor volume in the bufalin-treated groups was shrunk significantly compared with that in the normal saline-treated group (P<0.01). The survival time of the bufalin-treated groups was prolonged compared with that of the adriamycin-treated group and the normal saline-treated group P<0.05. Apoptotic characteristics could be seen in tumor tissues of the bufalin-treated groups. The label index of tumor cell apoptosis in the bufalin-treated groups (5.87+/-2.13, 8.86+/-2.96 and 10.60+/-3.42 in low-, medium- and high-dose groups respectively) was higher than that in the adriamycin-treated group (3.28+/-0.98) (P<0.05, P<0.01). The expression of Bax was up-regulated, while no changes were detected as to Bcl-2 protein in tumors of the bufalin-treated groups. CONCLUSION: Bufalin has significant anti-tumor effect on the orthotopically transplanted tumor of human hepatocellular carcinoma in nude mice. Its effect might be related to up-regulation of Bax protein and inducement of the tumor cell apoptosis.

OBJECTIVE: To evaluate the effects of ginsenosides (GSS) extracted from ginseng stem and leaves on glucocorticoid receptor (GR) in different viscera in heat-damaged rats, and to find out its action mechanism. METHODS: Thirty-two male SD rats were divided into control group and experimental group, and fed 2 mg/d GSS and equal-quantity of distilled water respectively for 7 days. Eight rats of each group were exposed to (42+/-1) degrees C for one hour. The binding activities of GR in brain, thymus, lung and liver cytosols in rats were detected by radioligand binding assay. The expression levels of GR mRNA in brain and liver cytosols were determined by reverse transcription-polymerase chain reaction (RT-PCR) assay. Plasma adrenocorticotropin (ACTH) and corticosterone (CS) concentrations were determined by radioimmunoassay. RESULTS: The binding activities of GR in brain, lung and liver cytosols, and the expression levels of GR mRNA in brain and liver cytosols were all higher in the GSS-treated and heat-damaged rats than those in the untreated heat-damaged rats (P<0.05 or P<0.01). There were no significant differences in plasma concentrations of ACTH and CS between the GSS-treated heat-damaged rats and the untreated heat-damaged rats. CONCLUSION: GSS can lessen the descending degree of the binding activity of GR in brain, thymus, lung and liver cytosols, and such efficacy of GSS may be related to improvement of the expression of GR mRNA.

Objective:To isolate and purify melittin from bee venom and to establish an SDS PAGE and HPLC method for the determination of melittin content.Methods:Melittin was isolated and purified from bee venom by gel filtration on Sephadex G 25,Sephadex G 50 and Sephadex G 75.Homogenicity and molecular weight of melittin were determined by SDS PAGE and HPLC.Results:The sample was a single peptide chain with a molecular mass of about 3 000 dalton as revealed by SDS PAGE.The average recovery was 95.97% and RSD was 1.07%.Conclusion:Melittin prepared by a combination of gel filtration has high purity.The method for the determination of melittin with SDS PAGE and HPLC is accurate,reliable and simple. [

According to differentiation of symptoms and signs, prostatosis was divided into pattern of dampness and heat in the lower energizer, pattern of qi stagnation and blood stasis, pattern of deficiency and cold in the lower abdomen, and pattern of qi deficiency and kidney deficiency. Prostatosis were treated mainly by acupuncture, plus moxibustion and Chinese medicine, and the effect was good.

Objective To explore how does chymase affect diabetic cardiomyopathy by investigating the gene expression of chymase and the relationship between the gene expression of chymase and the angiotensin Ⅱ in the cardiomyopathy of streptozotocin-induced diabetic hamasters. Methods Diabetic hamsters were induced by intraperitoneal injection of STZ 40 mg/kg once a day for 3 days. After stabilization of diabetic state for 18 weeks, the myocardial ultrastructure was observed with electron microscope and pathologic changes were observed by light microscopy. Immunohistochemistry was used to measure the level of expression of type Ⅰ and type Ⅲ collagen in diabetic and normal hamster hearts. Level of blood glucose, lipoprotein was determined using biocehemical methods. Apoptosis of cardiomyocyte was measured using TUNEL methods. Radioimmunuoassay method was used to determine the level of angiotensin Ⅱ. RT-PCR was used to determine chymase gene expression (corrected by?-actin). ResultsComparing with the control group, levels of serum glucose, TG, TC, LDL in DM group were much higher. Concentrations of collagen Ⅰ, Ⅲ and angiotensin Ⅱ [(95.8?16.0)?g/kg tissue vs (51.1?20.8)?g/kg tissue] in myocardial tissue in DM group were much higher than those in control group. RT-PCR result showed: Comparing with the control group, the mRNA expression of chymase in DM group was promoted significantly (0.810?0.026 vs 0.490?0.087). Conclusion In diabetic hamsters, the gene expression of chymase were much higher than thatin the control group, accompanying higher level of Angiotensin Ⅱ, higher levels of expression of collagen Ⅰ and Ⅲ. This result suggests that chymase plays an important role in the diabetic cardiomyopathy by promoting the activity of chymase.