This study was aimed to observe the effect of Bushen-Huoxue-Tonglin formula (BSHXTLF) on Ki-67 and apoptotic bodies in benign prostatic hyperplasia (BPH) rats. A total of 72 Wistar rats were randomly divided into 6 groups, which were the sham operation group, model group, Proscar group (0.8 mg?kg-1), BSHXTLF groups with low, middle and high dose (7.5, 15, 22.5 g?kg-1). Except the sham operation group, the BPH model was established by injecting testosterone propionate (5 mg?kg-1) for 30 days after removing both testicles in the rats. The drugs were administrated once a day for 30 days at the same time. The immunohistochemical and TUNEL methods were used to determine Ki-67 and apoptotic bodies, respectively. The results showed that compared with the model group , the expression of Ki-67 in treatment groups was decreased ( P < 0 . 05 ) . Compared with Proscar group and low-dose BSHXTLF group, the expression of Ki-67 in the middle- and high-dose BSHXTLF group was decreased ( P < 0 . 05 ) . Compared with the middle-dose BSHXTLF group , the expression of Ki-67 in the high-dose BSHXTLF group was decreased ( P < 0 . 05 ) . Compared with the model group , the expression of apoptot-ic bodies in each treatment group was increased ( P < 0 . 05 ) . Compared with Proscar group , low-dose and middle-dose BSHXTLF group, the expression of apoptotic bodies in the high-dose BSHXTLF group was increased (P <0.05). It was concluded that BSHXTLF may decrease the expression of Ki-67 and increase the expression of apoptotic bodies in BPH rats. These results provided objective evidences for clinical treatment of BPH.

Objective:To evaluate the influence of examination as a transient stressful life event on the psychological status and occlusal function of college students.Methods:47 student volunteers(17 males,30 females;aged 19.30 ± 1.53 years) with normal occlusion were enrolled.SCL-90 questionnaire for evaluation of psychological status and surface electromyography for assessment of masseter and temporalis activities in maximum voluntary teeth clenching and in chewing different foods were performed at two stages (stage 1:one week before final academic examination;stage 2:one week after spring festival holiday).Results:Scores of questionnaire evaluation of psychological status showed obvious change in factors of somatization,interpersonal sensitivity,depression,anxiety and paranoid ideation(P ＜0.05).Paired t-test analysis of masticatory muscle function showed changes only in percentage overlapping coefficient(POC) of masseters in chewing carrot and activity index(AC) in chewing preserved haw jelly(P =0.014 and 0.018 respectively).However,other chewing status and indexes were not significantly changed.Conclusion:The psychological status of college students can be significantly impacted by examination stress without influence on masticatory activities.

Objective:To analyze the clinical effect and influencing factors of closed reduction and percutaneous cannulated screw fixation in the treatment of femoral neck fracture in the adolescents, and to provide evidence for surgical treatment of femoral neck fracture in the adolescents. Methods:The clinical effect and influencing factors of 36 cases of femoral neck fracture treated by closed reduction and percutaneous cannulated screw fixation were analyzed. The time of operation, the time of fracture healing evaluated with X-ray image, the evaluation on the function after operation by Harris score of hip joint,and the occurrence of complications of the patients were observed.Results:All the cases were followed up for 6-24 months, average 16 months. One case of all patients had avascular necrosis of the femoral head, and accounted for 2.78% of all the patients;2 cases of all fractures were nonunion, and 5.56%.The remaining 33 cases were completely healed.The HHS-harris hip score results showed that 26 were excellent, 6 cases were good, and 2 cases were poor;the excellent and good rate was 88.89%.Conclusion:Closed reduction and percutaneous cannulated screw fixation in the treatment of adolescent femoral neck fracture is an effective program of operation;timing of operation, good reduction, and rigid internal fixation can decrease the femoral head necrosis and the incidence of complications.

The β-sheet peptides can be self-assembled to form different supramolecular solids. The supramolecular solid can be linked to a wide range of functional domains, for example, with cell adhesion sequences, signal domains, and vaccine epitopes to form complex nanostructures, which can be widely used in biomedical fields. In this paper, we mainly reviewed the self-assembly of peptides using β-folding secondary structure to form nanostructures, and discussed the application of nanostructures in drug delivery and tissue engineering.

[ ABSTRACT] AIM: To investigate the protective effect of mesenchymal stem cell ( MSC)-conditioned medium (MSCCM) on myocardial cell line H9c2 and its mechanism.METHODS:Verification of MSC was performed by flow cy-tometry analysis, followed by MTT assay to determine the optimal incubation time of MSCCM with myocardial cells.The cells were divided into 4 groups:normal ( N) group, model ( M) group, M+MSCCM group and MSCCM group.The cells in M+MSCCM group and MSCCM group were pre-incubated with MSCCM for 24 h.The cells in M group and M+MSCCM group were treated with 300 μmol/L H2 O2 for 4 h to imitate oxidative injury of myocardial cells.Mitochondrial membrane potential and apoptotic rate of injured myocardial cells were detected by flow cytometry.The ROS production was measured by fluorescence microscopy.The nuclear translocation of Nrf2 and expression of HO-1 was examined by Western blot.RE-SULTS:No difference of mitochondrial membrane potential, apoptotic rate or ROS production between MSCCM group and N group was observed (P>0.05).The mitochondrial membrane potential depolarization, apoptotic rate and ROS produc-tion in M+MSCCM group were significantly lower than those in M group ( P<0.01 ) .The nuclear translocation of Nrf2 and expression of HO-1 in the myocardial cells were increased with MSCCM incubation time prolonged.CONCLUSION:MSCCM protects the myocardial cells against oxidative injury induced by H2 O2 .The anti-oxidative mechanism would be as-sociated with the activation of Nrf2/ARE pathway.

Aim To investigate the protective effect of isorhamnetin on H9 C2 myocardial cell line and its mechanisms. Methods The toxicity and optimal pro-tective concentration of isorhamnetin were determined by MTT assay. The experimental subjects were divided into four groups:group N ( normal ) , group M ( mod-el) , group M + ISO ( model + isorhamnetin ) , and group ISO ( isorhamnetin only ) . Group M +ISO and ISO were pre-incubated with isorhamnetin for 12 hours while other groups with plain DMEM. Group M and M+ ISO were treated with 300μmol · L-1 H2 O2 for 4 hours after pre-incubation. Mitochondrial membrane potential depolarization of H9 C2 was measured by fluo-rescence microscope. Apoptotic rate and ROS produc-tion of injured myocardial cell line were detected using
flow cytometry. The oxidative indictors were measured by spectrophotometry. The expressions of cytoplasmic cytochrome C, caspase-9, caspase-3, Bcl-2, Bax, Nrf2 and HO-1 were examined by Western blot. Result There was no difference in mitochondrial membrane potential depolarization, apoptotic rate, ROS produc-tion, oxidative indictors production and expressions of cytoplasmic cytochrome C, caspase-9,caspase-3, Bcl-2 , Bax between groups ISO and N ( P>0. 05 ) . Apop-totic rate, ROS production, expressions of cytoplasmic cytochrome C, caspase-9, caspase-3, Bax, MDA pro-duction of group M+ISO were significantly lower than those of group M ( P < 0. 01 ) . And mitochondrial membrane potential, Bcl-2, CAT, SOD and GSH-Px of group M + ISO were increased compared to group M .
Nuclear translocation of Nrf2 and expression of HO-1 in myocardial cell line were increased with the prolonged isorhamnetin incubation time. Conclusion Isorham-netin could protect myocardial cell line against H2 O2-induced oxidative injury and apoptosis through the in-
terruption of mitochondrial dependent apoptotic path-way and activation of Nrf2/ARE pathway.

This study was aimed to observe the effect of Bu-Shen Huo-Xue Tong-Lin (BSHXTL) formula on gene expression of Caspase-3 in benign prostatic hyperplasia (BPH) rats. A total of 72 rats were randomly divided into the sham operation group, model group, proscar group, low-dose BSHXTL group, middle-dose BSHXTL group and high-dose BSHXTL group. The rat model was established by injecting testosterone propionate for 30 days after removing testis except the sham operation group. The drugs were administered once a day at the same time of the model establishment. Immunohistochemical method was used to measure positive average gray. And RT-PCR was used to measure the gene expression of Caspase-3.The results showed that compared with the model group, the expression of Caspase-3 and mRNA in each treatment groups were increased (P < 0.05). And the high-dose BSHXTL group was higher than the proscar group and low-dose BSHXTL group (P< 0.05). It was concluded that BSHXTL formula may upregulate gene expression of Caspase-3, which may be the mechanism of BPH treatment.

Humans ; Hypertension, Pulmonary ; diagnosis

〔Abstract〕 By use of the decision tree algorithm and diagnostic indexes , the paper sets up the discrimination rules to make differential diagnosis of Primary Hepatocelluar Carcinoma ( PHC) based on basic data of 95 patients with PHC and 190 patients with liver cirrhosis , in-cluding the CT diagnosis, testing results of imaging and serologic markers such as the HbsAg , AFP, CEA and AFU, sex and age, etc.As indicated by the results , the data mining technology represented by the decision tree can support the differential diagnosis of PHC .

As an income redistribution mechanism, the design of Urban Resident Basic Medical Insurance ( URBMI) should reflect the inclination to take care of vulnerable populations, such as people with chronic diseases and low incomes. Therefore, whether the healthcare services of vulnerable populations have been improved, is the most important indicator to determine the effectiveness of the URBMI. Using the DID model, this paper analyzes healthcare service utilization of invulnerable and vulnerable populations before and after the establishment of URBMI ( including both outpatient and inpatient) , based on the idea that these two populations have different socio-economic and health status. Then, based on the gap between the healthcare service utilization changes of different groups, we can measure the equity in URBMI. The results show that the establishment and implementation of URBMI has indeed narrowed the gap of invulnerable and vulnerable populations with different socio-economic and health status; health-care service utilization of vulnerable populations has increased significantly, and health status has significantly im-proved. From vertical and horizontal perspectives, the results prove that the establishment of URBMI has improved the equity of healthcare service utilization among different populations across China.