Objective: To explore the influence of hydroxyethyl starch(HES) 130/0.4 on myocardial ischemia-reperfusion (I/R) injury in rats and the possible mechanism. Methods: Twenty-four SD rats were evenly randomized into four groups(n = 6): the sham operation group, the I/R(IR) group, albumin + I/R(A-IR) group, and HES+I/R(H-IR) group; rats in the latter three groups were made into I/R models and were treated respectively with 7.5 ml/kg saline, 5% albumin and HES 130/0.4 through femoral vein at 25 min of ischemia. At 180 min of reperfusion, animals were sacrificed and the pathological changes of myocardium were observed. Serum concentrations of TNF-α and IL-1β and the myocardial NF-κB activity were also measured. Results: Histological examination showed that the injury in H-IR group was ameliorated compared with those in IR and A-IR groups. NF-κB activity and TNF-α, IL-1β concentrations in the sham operation group were significantly lower than those of the other 3 groups (P<0.05); and the increases of the above parameters in H-IR group were smaller than those of the IR and A-IR groups (P<0.05). Conclusion: HES 130/0.4 can improve myocardial function and attenuate ischemia-reperfusion injury, and the mechanism might be related to the inhibition of myocardial NF-κB activity and reduction of proinflammatory factors.

OBJECTIVETo observe protective effects of Schisandra extract (SE) on embryotoxicity and reproductive toxicity of early pregnant rats exposed to Benzo[a]pyrene (Bap).

METHODSPregnant rat model was prepared using periodic screening cage method. Totally 50 female pregnant SD rats were divided into five groups by randomized block design according to the weight, i.e., the BaP model group, the low dose SE group, the middle dose SE group, the high dose SE group, the normal control group, 10 rats in each group. Rats in the BaP model group were administered with BaP at a daily dose of 2 mg/kg by gastrogavage. Rats in low, middle, and high dose SE groups were administered by gastrogavage with BaP (at a daily dose of 2 mg/kg) plus SE at a daily dose of 40, 200, and 1 000 mg/kg, respectively. Equal volume of olive oil was administered to rats in the normal control group by gastrogavage. All medication was performed for 8 successive days. Changes of rat body weight in each period were observed. The uterus embryonic total quality and ovary quality were measured, and organ index calculated. The number of corpus luteum, the number of embryo implantation, and the number of absorbed embryo were statistically calculated respectively. The implantation rate and the absorbed embryos rate were calculated. Serum levels of human chorionic gonadotrophin β (β-HCG) and progesterone (PROG) were detected by ELISA.

RESULTSCompared with the normal control group, the weight of 9-day pregnant rats, the number of embryo implantation, the uterus embryonic total index, ovary index, serum levels of β-HCG and PROG all decreased in the Bap model group with significant difference (P < 0.05, P < 0.01). Compared with the Bap model group, body weight, the uterus embryonic total index, and the PROG level increased in 3 dose SE groups (P < 0.05, P < 0.01). Ovary index and serum β-HCG increased in middle and high dose SE groups (P < 0.05, P < 0.01). The number of implantation obviously increased in the high dose SE groups (P < 0.01).

CONCLUSIONSE could reduce the embryotoxicity and reproductive toxicity of early pregnant rats exposed to Benzo[a]pyrene.

Animals ; Benzo(a)pyrene ; toxicity ; Chorionic Gonadotropin ; blood ; Embryo Implantation ; drug effects ; Female ; Ovary ; drug effects ; Plant Extracts ; pharmacology ; Pregnancy ; Progesterone ; blood ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Reproduction ; drug effects ; Schisandra ; chemistry ; Uterus ; drug effects

Anemia, Aplastic ; therapy ; Child ; Female ; HLA Antigens ; genetics ; immunology ; Humans ; Mesenchymal Stem Cell Transplantation ; Peripheral Blood Stem Cell Transplantation

OBJECTIVETo examine the protective effect of Ginkgo biloba leaf extract (GbE) on learning and memory deficit induced by aluminum chloride (AlCl(3)), and explore its mechanisms.

METHODSThe rat models with learning and memory deficit were induced by administering via gastrogavage and drinking of AlCl(3) solution. And the model rats were treated with GbE at the dose of 50, 100, 200 mg/kg every day for 2 months accompanied with drinking of AlCl(3) solution, respectively. Their abilities of spatial learning and memory were tested by Morris water maze, and the acetylcholinesterase (AChE) activity in serum was assayed with chemical method, the AChE expression in hippocampus was observed by immunohistochemistry assay, and then quantitative analysis was done by BI 2000 image analysis system.

RESULTSLearning and memory deficit of rats could be induced by AlCl(3) solution (P < 0.01), and AChE expressions in rats hippocampus were increased (P < 0.01); GbE ameliorated learning and memory deficit and reduced AChE expression in rats hippocampus in a dose-dependent manner, while GbE significantly increased serum AChE activity at the dose of 200 mg/kg each day (P < 0.05).

CONCLUSIONGbE can ameliorate learning and memory deficit induced by AlCl(3), which may be due to its inhibition of the AChE expression in hippocampus.

Acetylcholinesterase ; metabolism ; Aluminum Compounds ; toxicity ; Animals ; Chlorides ; toxicity ; Dose-Response Relationship, Drug ; Ginkgo biloba ; Hippocampus ; enzymology ; Immunohistochemistry ; Male ; Maze Learning ; drug effects ; Memory Disorders ; chemically induced ; prevention & control ; Neuroprotective Agents ; therapeutic use ; Phytotherapy ; Plant Extracts ; therapeutic use ; Plant Leaves ; Plant Structures ; Rats ; Rats, Wistar ; Reaction Time

As the main part of the teaching activities,students play an important role in the teaching reform.The students were trained through 3 pathways,“Extending teaching activities from the classroom to the outside”,“Development from basic to clinical knoledge” and “Culturing students' innovative consciousness”,so as to allow them to give full play in teaching reform,to enhance their ability of practice and learning by themselves,to culture their innovative consciousness and to develop students' leading functions in the anatomy teaching reform.

OBJECTIVETo observe the effect of Salvia miltiorrhiza Injection (SMI) and Shengmai Injection (SI) on liver function and fibrosis related indexes in patients with chronic hepatitis B.

METHODSSeventy-nine chronic hepatitis B patients were randomly divided into the SMI group (n=47) and the SI group (n=32), they were treated with SMI and SI respectively on the basis of conventional treatment. The therapeutic course was 35 days for both groups. The changes of main symptoms and physical signs were observed, and indexes of liver function and fibrosis including serum hyaluronidase, laminin, III type precollagen (PC-III) and IV type collagen (IV-C) were investigated before and after treatment.

RESULTSSymptoms, physical signs and liver functions were improved obviously in both SMI and SI groups, SI showed better effect than SMI (P < 0.05). The four liver fibrosis indexes declined significantly in the SMI group after treatment (P < 0.05), but no obvious change of those was found in the SI group (P > 0.05), showing significant difference between the two groups (P < 0.05). Conclusion SMI is effective in improving liver function and inhibiting liver fibrosis, and SI has even better effect in improving liver function than SMI, though it shows no anti-liver fibrosis effect.

Adult ; Collagen Type IV ; blood ; Drug Combinations ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; administration & dosage ; therapeutic use ; Female ; Hepatitis B, Chronic ; blood ; drug therapy ; Humans ; Hyaluronoglucosaminidase ; blood ; Injections, Intravenous ; Laminin ; blood ; Liver Cirrhosis ; prevention & control ; Male ; Middle Aged ; Phytotherapy ; Salvia miltiorrhiza ; Treatment Outcome

ObjectiveTo evaluate the effects on serum homocysteine(Hcy) level,vascular function and carotid intima-media thickness(IMT) in metformin-treated diabetic patients with or without supplementation with folate and Vitamin B12.MethodsA total of 100 newly diagnosed diabetic type 2patients were divided into two groups by random digits table with 50 cases each,90 patients completed study.Forty-seven participants (control group) received a 6-month course of metformin treatment,43 patients (treatment group) received mefformin,folate and Vitamin B12 treatment.The levels of serum Hcy,endothelin-1 (ET-1),carotid IMT,large or small arterial elasticity index (C1,C2),flow-mediated dilatation (FMD) of the brachial artery were evaluated before and after treatment.ResultsThe level of serum Hcy in control group significantly increased compared with before treatment[ (13.4 ± 2.7)μ mol/L vs.(11.1 ± 1.9)μ mol/L],hut the level of serum Hcy in treatment group significantly decreased compared with before treatment [ (9.2 ± 1.8 ) μ mol/L vs. ( 11.3 ± 2.0) μ mol/L ],there was significant difference(P ＜ 0.05 ).A beneficial effect was observed in the serum ET-1,FMD,carotid IMT and C2 in treatment group[ (20.0 ± 6.2)ng/L,( 15.8 ± 7.6)％,(0.8 ± 0.2) mm,(4.1 ± 2.1 ) ml/mm Hg ( 1 mm Hg =0.133 kPa) × 100 vs. (31.3 ±10.1 ) ng/L,(9.7 ± 4.5)％,( 1.1 ± 0.4) mm,(2.3 ± 1.0) ml/mm Hg × 100 ] (P ＜ 0.05).The levels of ET-1,FMD,carotid IMT and C2 after treatment in control group [ (24.8 ± 6.8) ng/L,( 12.9 ± 6.3 )％,(0.9 ± 0.3)mm,(3.0 ± 1.4) ml/mm Hg × 100] had significant difference compared with before treatment [ (30.6 ± 8.7)ng/L,(9.8 ± 4.6)％,( 1.0 ± 0.3) mm,(2.2 ± 0.9) ml/mm Hg × 100](P＜ 0.05).However,the results were improved significantly in treatment group than those in control group (P ＜0.05).In treatment group,significant correlation were detected between changes of Hcy and ET- 1 (r =0.43,P ＜ 0.05 ),carotid IMT(r =0.56,P ＜ 0.05),FMD (r =-0.54,P ＜ 0.05 ),C2 (r =-0.37,P ＜ 0.05 ).ConclusionsAdministration of folate and Vitamin B12 can reduce the levels of serum Hcy and ET-1 in metformin-treated type 2 diabetic patients,which exert beneficial effect on carotid IMT,FMD and C2.

AIM: To study the protective effects of Naokangning (Rhizoma Chuanxiong, Radix salviae miltiorrhizae, Hirudo, etc.) against cerebral ischemia. METHODS: We observed the effect of Naokangning on mice's resistance to cerebral ischemia when bilateral common carotid arteries and vagus nerves were ligated and hypoxia under normal pressure and airtight circumstance; With the model of partial cerebral ischemia by blocking rats'middle cer ebral artery (MACO):the effects of Naokangning on the activity of superoxide dismutase (SOD) and creatine kinas e(CK), the content of malondialdehyde (MDA) and nitric oxide (NO) were measured. RESULTS: Naokangning significantly raised mice's ability of anti-cerebral ischemia and prolonged span of life in hypoxia, Moreover, it also obviously improved the activity of SOD, reduced content of MDA in cerebrum, content of NO and activity of CK in blood serum after ischemia. CONCLUSION: Naokangning could strikingly protect brain caused by cerebral ischemia.

OBJECTIVETo compare the dissolution characteristics of colloidal silica and porous silica as the solid dispersion carrier, with baicalin as the model drug.

METHODThe baicalin solid dispersion was prepared by the solvent method, with colloidal silica and porous silica as the carriers. In the in vitro dissolution experiment, the solid dispersion was identified by scanning electron microscopy, differential scanning and X-ray diffraction.

RESULTThe solid dispersion carriers prepared with both colloidal silica and porous silica could achieve the purpose of rapid release. Along with the increase in the proportion of the carriers, the dissolution rate is accelerated to more than 80% within 60 min. Baicalin existed in the solid dispersion carriers in the non-crystalline form.

CONCLUSIONThe release behaviors of the baicalin solid dispersion prepared with two types of carrier were different. Among the two solid dispersion carriers, porous silica dissolved slowly than colloidal silica within 60 min, and they showed similar dissolutions after 60 min.

Calorimetry, Differential Scanning ; Colloids ; chemistry ; Drug Carriers ; chemistry ; Drug Delivery Systems ; instrumentation ; Flavonoids ; chemistry ; pharmacology ; Porosity ; Silicon Dioxide ; chemistry ; Solubility

Baicalin extremely fine powder was made by using ball-mill and the effect of micronization on the micromeritics properties of baicalin was studied and analyzed. The microstructures of baicalin ordinary and extremely fine powder were compared by scanning electron microscope, differential scanning calorimeter and X-ray diffraction and the powder characteristic of them was investigated. The hygroscopicity was studied. The effect of micronization on the dissolution of baicalin was investigated. The results showed that the chemical constituents of baicalin were not changed after micronization with better compressibility. It was confirmed that micronization technology had a certain application value in promoting the insoluble component of baicalin absorption with higher dissolution.
Calorimetry, Differential Scanning ; Drugs, Chinese Herbal ; chemistry ; Flavonoids ; chemistry ; Particle Size ; Solubility ; Wettability ; X-Ray Diffraction