BACKGROUND:Bone marrow mesenchymal stem cels have low immunogenicity and can induce immune tolerance. At present, the mechanism of immune regulation of bone marrow mesenchymal stem cels is not completely understood. It has been rarely reported whether the bone marrow mesenchymal stem cels can migrate to the thymus after transplantation.
OBJECTIVE:To observe the distribution and survival of bone marrow mesenchymal stem cels in the thymus of aging rats after transplantation.
METHODS: Bone marrow mesenchymal stem cels cultured in vitrowere transfected by adenovirus vectors expressing green fluorescent protein. Transfected bone marrow mesenchymal stem cels were injected into the portal vein of aging rats. At days 3, 7, 14, 21 after transplantation, the survival of bone marrow mesenchymal stem cels homing to the thymus was observed under fluorescence microscope. At day 3 after transplantation, thymus tissues were taken and stained with hematoxylin-eosin for pathological observation.
RESULTS AND CONCLUSION:Green fluorescent protein-labeled bone marrow mesenchymal stem cels had a strong green fluorescence at days 3 and 7 after transplantation, and the cel contour was clear. There was no significant difference in the mean absorbance values at days 3 and 7 (P> 0.05). Expression of green fluorescent protein was weakened significantly at days 14 and 21 compared with that at day 3 (P < 0.05). At 3 days after transplantation, the transplanted bone marrow mesenchymal stem cels were clearly visible in the thymus, and acute rejection was not observed. The results show that bone marrow mesenchymal stem cels can migrate to the damaged thymus tissue through the blood circulation, and can survive at least 1 week.

Objective:To investigate the regulatory mechanism of LBP on T lymphocytes excessive apoptosis and the mRNA expression of apoptotic genes in aged rats Methods:T lymphocyte apoptosis and the expression of pre apoptotic and anti apoptotic genes (Fas, FasL, TNFR1, Bax, Bcl2 and TNFR2) from young rats and old rats treated with or without LBP were studied using flow cytometry and fluorescence real time quantitative RT PCR Results:LBP could effectively downregulate the percentage of T cell apoptosis in aged rats At the same time LBP also downregulated the transcription level of TNFR1 gene and upregulated the transcription level of Bcl 2 in T cells from old rats Conclusion:The T cell excessive apoptosis in old rats could be effectively downregulated with LBP, by the by of decreasing the expression of pro apoptotic gene and enhancing the expression of anti apoptotic gene

Objective To construct the eukaryotic expression vector containing short hairpin RNA (shRNA) targeting the inhibition of Smad3 gene segment in keloid fibroblasts (KFBs) and to investigate the effects on the expression of Smad7 in KFBs. Methods A couple of the most effective siRNA screened from former experiments were used to recombine the plasmids of Smad3 shRNA, and then Smad3 shRNA was transfected into KFBs by LyoVec TM. The expressions of Smad3 and Smad7 at different time points (0～9 d) were detected by RT-PCR and Western blotting. Results ① The recombinant Smad3 shRNA vectors were identified by RT-PCR and Western blotting. ② The expressions of mRNA and protein of Smad3 in KFBs decreased significantly in a time-dependent manner after transfection of Smad3 shRNA and reached the lowest point at 72 hours in the experimental group. Optical density analysis revealed a significant difference between the experimental group and the control group (P

CB-HRP was injected into the ovary of the domestic hens of 75-90 days old to trace the originating neurons of the vagus nerve innervated the ovary. The results were as the following:1. The afferent vagus neurons innervated the ovary were located in the nodose ganglia and the jugular ganglia. The afferent fibers in the ovarian medulla were found chiefly in the solitary tract, the nucleus of the solitary tract and the commissural nucleus of Cajal also.2. The efferent vagus neurons were located mainly in the subnueleus ventralis parvicellularis (VP)and the subnueleus ventrolateralis (VL)of the dorsal vagal motor nucleus, and a small number of neurons extended from the subnueleus VP and VL to the neighbouring five subnuclei.

OBJECTIVE:To investigate the cognition of clinical pharmacists on the clinical pharmacy practice and their profes-sion,and provide reference for further developing clinical pharmacy practice. METHODS:A questionnaire was designed,and ran-dom sample was conducted for the clinical pharmacists from 30 secondary and tertiary hospitals in Shanghai,and the investigation results were analyzed statistically. RESULTS:Totally 130 questionnaires were sent out,and 102 were effectively received with valid response rate of 78.46%. 94.11% of the investigated subjects were willing to be a clinical pharmacist,but 17.65% of them consid-ered that they were incompetent for their work;29.41% of them thought the current situation of clinical pharmacy practice was not ideal;all the respondents considered that the clinical pharmacist system should be implemented in medical and health institu-tions;the cognition and evaluation of investigated subjects in tertiary hospitals on clinical pharmacy practice and their profession was generally higher than those in secondary hospitals(P<0.05). CONCLUSIONS:The clinical pharmacists in medical and health institutions in Shanghai showed high cognition on their profession,and the clinical pharmacy practice has already made some achievements,but many work still need to be improved. Therefore,clinical pharmacists should continuously study their profession-al knowledge and improve their professional skills and quality;hospitals and universities should strengthen the subject construction and personnel training of clinical pharmacy and deeply carry out the clinical pharmacist system;health administration departments should strengthen the related laws and regulations of clinical pharmacy;colleges and universities should strengthen the discipline construction and personnel training.

Objective To investigate the effects of propofol on ketamine-induced HSP 70 mRNA and protein expression in the rat posterior cingulate cortex and to explore the possibility of using propofol to prevent or treat ketamine-induced psychotomimetic effects and neuronal damage. Methods Thirty male Wistar rats weighing 250-300 g were randomly divided into 5 groups with 6 animals in each group: group 1 received normal saline intraperitoneally ip (NS); group 2 received ketamine 100 mg? kg-1 ip (K); group 3 received propofol 100 mg ? kg-1 ip (P); group 4 received propofol 50 mg?kg-1 + ketamine 100 mg?kg-1 ip (P1 K) and group 5 received propofol 100 mg?kg + ketamine 100 mg?kg-1 ip (P2K) . In group 4 and 5 the interval between propofol and ketamine administration was 15 min. Twenty-four hours after ketamine and/or propofol administration, the animals were decapitated and brain was removed. HSP 70 mRNA expression in the posterior cingulate cortex was detected by using semi-quantitative RT-PCR technique; HSP 70 protein expression in posterior cingulated cortex was determined by immuno-histochemical method. Results The levels of HSP 70 mRNA and HSP 70 protein expression were significantly different among the 5 groups. Ketamine induced marked HSP 70 mRNA and HSP 70 protein expression in the posterior cingulated cortex. Propofol itself did not induce HSP 70 gene expression in this brain region. Propofol significantly inhibited ketamine-induced HSP 70 mRNA and HSP 70 protein expression in the posterior cingulate cortex in a dose-dependent manner. Conclusions Propofol pretreatment can significantly inhibit ketamine-induced HSP 70 mRNA and protein expression in the posterior cingulated cortex. It may be one of the mechanisms of inhibition of ketamine-induced psychotomimetic effect and neuronal damage by propofol.

Objective To assess the effects of Jinghou Zengzhi Recipe ,a Chinese prescription with the action of tonifying Qi and blood,on the expressions of Bcl-2,Bax and Caspase3 in ovarian granulosa cells of con-trolled ovarian hyperstimulation(COH)mice. Methods A model of COH mice was prepared and 30 female KM mice were divided into blank group,model group and treatment group. The expressions of Bcl-2,Bax and Cas-pase3 were detected by Real-time Quantitative PCR and Western Blot. Results The mRNA and protein levels of Bax and Caspase3 were lower(P<0.05),while the protein levels of Bcl-2 were significantly higher(P<0.05)in the treatment group than those in the model group. There was no significant differences between the treatment group and blank group in the mRNA and proteins. Conclusion Jinghou Zengzhi Recipe can inhibit the ovarian granulo-sa cellular apoptosis of COH mice through increasing the expression of Bcl-2 protein as well as decreasing the ex-pressions of Bax and Caspase3 mRNA and proteins to nearly the natural level,which improves the quality of ovari-an follicle.

Objective To investigate the value of echocardiography for assessing the right ventricular function before and af ter treatment in the patients with pulmonary embolism.Methods Ninety-six patients with pulmonary embolism in our hospital from June 2014 to December 2015 were selected as the research subjects and divided into low-risk group,intermediate-risk group and high-risk group according to the disease severity.The echocardiographic examination was performed before and after treatment in all cases.Results The pulmonary artery systolic pressure after treatment in the low-risk group was lower than that before treatment (P＜0.05).The transverse diameter of right ventricle,transverse diameter of right ventricle and pulmonary artery systolic pressure after treatment in the intermediate-risk group and high-risk group were lower than those before treatment (P＜0.05).The Tei index after treatment in the low-risk group,intermediate-risk group and high-risk group was lower than that before treatment (P＜ 0.05).The right ventricle ejection fraction (RVEF),right ventricular end-systolic volume (RVESV) and right ventricular end-dias tolic volume (RVEDV) in the low-risk group had no statistically significant difference between before and after treatment.RVEF after treatment in the intermediate-risk group and high-risk group was higher than that before treatment(P＜0.05),while RVESV and RVEDV after treatment were lower than those before treatment (P＜0.05).Conclusion Echocardiography can objectively re flect the change situation of right heart function before and after treatment in the patients with pulmonary embolism,and can be used as an evaluation method for the effect of pulmonary embolism treatment.

Objective To evaluate the safety of simultaneous transurethral green laser vaporization therapy in benign prostatic hyperplasia (BPH) and nonmuscle-invasive bladder transitional cell carcinoma (NMIBT).Methods The clinical data of 27 patients (observation group) who had undergone simultaneous transurethral green laser vaporization therapy in BPH and NMIBT between May 2004 and October 2010 were analyzed retrospectively.Meanwhile 27 patients(control group) only had undergone green laser vaporization therapy in NMIBT during the same period were selected.Clinicopathologic parameters,rate of recurrence and progression,rate of recurrence in the bladder neck and prostatic urethra were determined and compared.Results The time of follow-up in observation group and control group were (28.61 ± 19.53) and (30.20 ± 21.46) months.The rates of recurrence,progression and recurrence in the bladder neck and prostatic urethra between observation group and control group had no significant differences [ 18.5％ (5/27) vs.25.9％ (7/27),3.7％ (1/27) vs.0,0 vs.0] (P ＞0.05).Conclusion Simultaneous transurethral green laser vaporization of NMIBT and BPH can be safely performed without increasing the risk of tumor recurrence in the prostatic urethra.