BACKGROUND: Ovariectomized animals usually are employed for the study of women osteoporosis while little is known about theenergy balance of ovariectomized animals. Many previous studies showed that soy isoflavone could decrease the hyperlipemia resulted by high-fat feed, and how about the effect of soy isoflavone on the energy metabolism in ovariectomized animals?OBJECTIVE: To explore the pathologic effect of soy extract and its active components on the energy metabolism in ovariectomized rats so as to provide adequate evidences for the primary rehabilitation and prevention of type Ⅱ diabetes mellitus, disturbance of lipid metabolism as well as hypertension and coronary atherosclerotic heart disease.DESIGN: A randomized and controlled trial with the experimental animals as subjects.SETTING: Laboratory of Cell and Biochemistry in a university.MATERIALS: Ninety Wistar rats (SFP grade, license code: scxk11-00-006) were randomized into 9 groups: normal group, sham group,model group, estrogen group, high-dose soy flavone group, low-dose soy flavone group, high-dose soy extract group, low-dose soy extract group and soy polysaccharide group, with 10 rats in each group.INTERVENTION: Except the rats in normal group and sham group,the bilateral ovaries of other rats were all removed. From one week after operation, body weight and daily food intake were detected once a week.Six weeks later, the rats were killed to calculate the forage transformation efficiency, measure body length, work out the body mass index (BMI),and separate the abdominal fat and weight.MAIN OUTCOME MEASURES: ①Effect of soy extract on the abdominal fat accumulation of ovariectomized rats. ②Effect of soy extract on food intake of ovariectomized rats. ③Effect of soy extract on forage transformation efficiency of ovariectomized rats.RESULTS: After ovariectomy, the food intake, body weight and BMI all raised, and the forage transformation efficiency increased, with abdominal fat accumulation. The changes of energy metabolism induced by ovariectomy were all weakened at different degrees in estrogen group, soy extract group and soy flavone group, while no influenced was found in soy polysaccharide group.CONCLUSION: The ovariectomized rats can be used as animal model of the climacteric fat women. The soy extract, with the effective component of flavonoid, can reduce the pathologic changes such as the increase of food intake, body weight and forage transformation efficiency induced by ovariectomy.

Objective To observe the therapeutic effects of curcumin on pulmonar y fibrosis rats induced by bleomycin. Method One hundred and forty-four male Sp rague-Dawley rats were randomly divided into 6 groups (24 rats in each group). Rats in the model control group,positive medicine group,and high-,moderate-and low-dosage curcumin groups were injected with a single dose of bleomycin th rough trachea,and rats in sham-model control group with the same volume of nor mal saline. One day after the injection,curcumin solution of different dosages (200,100,50 mg?kg-1?d-1) was respectively given to rats in the high-,mod erate-and low-dosage curcumin groups daily by gastric gavage,while the same v olume of normal saline was given to those in the sham-model control group and m odel control group,and the same volume of prednisone(0.56 mg?kg-1?d-1) was given to those in the positive medicine control group. On the 7th,14th,and 28t h day after medication,8 rats in per treatment group were randomly killed,the changes of lung function were observed,and the lung was incised to make patholo gical sections which were stained with HE and Mallory. Results Curcumin improved lung function. The results of pathological examination showed that curcumin rel ieved the pathogenic changes of the lungs of pulmonary fibrosis rats induced by bleomycin. Conclusion Curcumin exerts a certain curative effect on pulmonary fib rosis rats induced by bleomycin.

After the dogs were inflicted with blast injury,high velocity shell fragment injury on one extremity,and blast-fragment combined injury,the morphological changes of the lungs were examined under gross inspection and with optical and transmission electron microscopes,and the lung/body weight index and lung water ratio were determined.It was found that high velocity shell fragment injury on one extremity could intensify the blast injury on the lungs by one grade.

The changes of mean pulmonary arterial pressure (PAP) and 6-keto-PGF1a and TXB2 in the plasma and lung tissues of 3 groups of dogs (7 in each group) with blast injury (group Ⅰ),high velocity shell fragment injury on one of the extremities (group Ⅱ),and combined injury of the both (group Ⅲ) were investigated.It was found that PAP and TXB2 in the plasma and lung tissues increased after all the 3 kinds of injuries.The changes of PAP was most marked in group Ⅰ while those of TXB2 was more marked in groups Ⅲ and Ⅲ than in group Ⅰ.6-kcto-PGF1a increased in the plasma and lung tissues after blast and shell fragment injury but decreased in the plasma and showed no changes in the lung tissues after combined injury.The significance of these changes of 6-keto-PGF1a and TXB2 in the 3 kinds of injuryies were discussed.

Aim To investigate the phytoestrogenic effects and mechanism on ER?,ER? expression levels at the protein of quercetin and psoralen in T47D cells.Methods T47D cells were treated with 10 ?mol?L-1 quercetin and 10 ?mol?L-1 psoralen for 48h respectively,total cell extracts examined for the levels of ER? and ER? protein by RT-PCR and Western blot analysis.The estrogen-like effect of quercetin and psoralen and their relations with the estrogen-receptor were evaluated by pure estrogen receptor antagonist ICI182,780 as a tool.Results Psoralen(10 ?mol?L-1) and quercetin(10 ?mol?L-1) up-regulated the expression of ER? mRNA and protein,without any effect on ER? mRNA and protein levels.The above up-regulation on ER? protein could be inhibited by adding estrogen receptor antagonism ICI182,780.Conclusion Psoralen and quercetin exerts estrogenic activity to ER-positive cells proliferation through interaction with ER? expression.

Objective To explore the possible functional mechanism of Er-xian Decoction and its component herbs on the expression of extrogen receptor(ER) in adrenal development rats.Methods Fifty-four development female SD rats were randomly divided into nine groups:normal control group(A),positive control group(B),Er-xian Decoction group(C),Herba Epimedii group(D),Rhizoma Curculiginis group(E),Radix Morindae Officinalis group(F),Radix Angelicae Sinensis group(G),Cortex Phellodendri group(H),Rhizoma Anemarrhenae group(I).After the rats were administrated for six days,serum were got to measure testosterone(T).Bilateral adrenal gland was weighed and embedded by paraffin.Mean optical density(MOD) were studied by the immunohistochemical method and image analyzing system.Results The adrenal coefficient was increased in group B and C,and the level of T was decreased in group C,D,E and I.ER? was mainly observed in the cytoplasm of zona glomerulosa and zona fasciculate.MOD in group C was increased while declined in group B.ER? was mainly observed in nucleus of zona glomerulosa and zona fasciculate.MOD in group C,D,E and I was less than group B.Conclusion Er-xian Decoction and its component herbs of warming Shen(Herba Epimedii,Rhizoma Curculiginis) and nourishing Yin(Rhizoma Anemarrhenae) play a phytoestrogen role by influencing the expression of ER? and ER ? in the adrenal cortex.

Objective To investigate the effect of puerarin on proliferation of human embro fibroblast and extracelluar matrix. Method Human embro fibroblasts were incubated with 0～400 ?g/mL puerarin for 24～96 h. The MTT method was used to assay the biological activities and extracelluar matrix formation in different time and different dose of pueratin. The cell cycle distribution was detected by flow cytometric analysis. Result Incubation cells in presence of puerarin of 40～400 ?g/mL for 24～72 h could significant inhibit cell proliferation and restrain the collagen synthesis in a dose- and time-dependent manner (P

BACKGROUND:Due to special physiological and anatomical location, stability of the spine is very complicated during thoracolumbar fractures. It is difficult to identify the stability of the spine. It should be based on their individual circumstances, to explore more effective internal fixation repair method.
OBJECTIVE:To explore the Cobb’s angle and vertebral height of patients with thoracolumbar fracture and spinal cord compression treated with posterior laminectomy and screw fixation, and compared with anterior laminectomy.
METHODS:One hundred patients with thoracolumbar fracture and spinal cord compression, who were treated in the Panyu District Central Hospital from January 2013 to November 2014, were enroled in this study. The patients were equaly and randomly divided into posterior laminectomy fixation group and anterior laminectomy fixation group. Tactile and sports of American Spinal Injury Association scores, Cobb’s angle and vertebral height were assessed before treatment and 1 month after treatment, and fixation effects were compared between the twogroups.
RESULTS AND CONCLUSION:(1) No significant difference in each index was detected between the two groups preoperatively (P> 0.05). (2) Tactile and sports of American Spinal Injury Association scores, Cobb’s angle and vertebral height were better in the posterior laminectomy fixation group than in the anterior laminectomy fixation group at 1 month postoperatively (P< 0.05). (3) These findings indicated that compared with the anterior laminectomy fixation, posterior laminectomy fixation for thoracolumbar fracture combined with spinal cord compression obtained better outcomes, and could obviously relieve spinal cord compression. Posterior laminectomy fixation isasafe and effective treatment method for thoracolumbar fracture and spinal cord compression.

Objective To study the mechanisms of inhibiting proliferous effect of human breast cancer cell line treated with genistein in vitro. Methods Two human breast cancer cell lines (MCF 7 and MDA MB 231) were cultured in vitro , proliferation of them was measured with MTT method, cell morphology was observed with Giemsa stain, cell cycle and apoptosis rate were measured with flow cytometry and apoptosis was detected in situ. Results Genistein markedly inhibited proliferation of MCF 7 and MDA MB 231 cell line. Typical image of apoptosis was observed in MCF 7 cell line treated with genistein in Giemsa stain:cell condensation, blebs formation on cell surface and pieces of condensed chromatin were scattered along nuclear envelope. The results detected with flow cytometry showed G 1 subpeak before G 1 phase peak (apoptosis peak). Apoptosis rate increased with time of genistein treatment. However, MDA MB 231 cell line treated with genistein did not show apoptosis and apoptosis peak, and quantity of cells at G 2 M phase obviously increased.Conclusion Genistein inhibites proliferation of human breast cancer cell line in vitro through inducing apoptosis or arresting cell at G 2 M phase.\;[

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