OBJECTIVE:To investigate the protective effects of diphenyl ethylene glycoside(TSG)on hippocampal neuron cells ischemic injury model rats.METHODS:Hippocampal nerve cells ischemic injury rats’model was established with sodium dithionite,antagonism of TSG on ischemic cerebral injury was determined by methyl thiazolyl tetrazolium(MTT)microcol-orimetry and lactate dehydrogenase(LDH)efflux assay.RESULTS:Pseudo-ischemic cerebral injury could cause significant injury to neurons with elevated cell death rate,significantly decreased MTT value and increased LDH efflux rate.The appli-cation of TSG could lead in significantly decreased LDH efflux rate,elevated MTT value and reduced cell death rate.CON-CLUSION:TSG has a significant protective effect on nerve cells ischemic injury model rats.

Objective To investigate the inhibitory effect of siRNA human telomerase transcriptase (hTERT) on activity of telomerase and proliferation of lung carcinoma cell A549. Methods A plasmid including U6 promoter and siRNA of hTERT was designed and constructed. The plasmid was transfected into A549 cell line. The telomerase activity was tested by telomerase repeat amplification protocol ELISA (TRAP-ELISA). MTT assay was used to assay the cell proliferation activity,and hTERT expression was assessed by Western blot. Result The U6 expression plasmid that was constructed for hTERT gene 745 showed obvious interfering effect. hTERT-siRNA could down-regulate the expression of hTERT protein,inhibit telomerase activity and proliferation of A549 cells. Conclusion siRNA of hTERT can inhibit the expression of human telomerase and proliferation of A549 cells. It may open a new approach to the use of siRNA as a new tool to study gene function in cancer cell lines,and may be developed to be a new gene therapeutic agent for cancer.

Objective To evaluate the effects of interleukin-10 and dexamethasone on expression of TNF-? mRNA, IL-1? mRNA, and IL-1ra mRNA in acute lung injury (ALI). Methods A rat model of ALI was reproduced by intratracheal instillation of endotoxin (LPS) with a dose of 10mg/kg. 72 male S-D rats were randomly divided into control group, LPS group, LPS+IL-10 group, and LPS+Dex group, 18 rats in each group (6 rats at 2h, 6h, and 24h respectively). RT-PCR method was used to determine the expression of TNF-? mRNA, IL-1? mRNA, and IL-1ra mRNA in lung tissue. Results In LPS group TNF-? mRNA expression peaked at 2h, then decreased sharply; IL-1? mRNA expression increased markedly at 2h, peaked at 6h, then decreased; IL-1ra mRNA expression increased and peaked at 6h, and remained higher than control group at 24h. Both IL-10 and Dex inhibited TNF-? mRNA and IL-1? mRNA expression, but with no effect on IL-1ra mRNA expression. Pathological examination revealed that IL-10 or Dex attenuated injury to lung parenchyma. Conclusions The up-regulation of expression of both TNF-? mRNA and IL-1? mRNA was much earlier than that of the expression of IL-1ra mRNA, suggesting that there was an imbalance of inflammatory and anti-inflammatory mediators in the early phase of ALI. Both IL-10 and Dex could inhibit the expression of inflammatory mediators and exert no effect on the expression of anti-inflammatory mediators, thus contributing a balance effect between them and relieving ALI in rats.

Objective To investigate the effects of anti-sense hTERT on the expression of VEGF and the receptor in SGC7901 cells, and study the influence in angiogenesis and progression in gastric carcinoma. Methods SGC7901 cell line was transfected by the recombinant virus containing sense and anti-sense hTERT cDNA. Then the expression of VEGF-C and Flt-4 was observed with RT-PCR, distribution of cell cycles was determined with flow cytometry. The expression of VEGF-C and Flt-4 protein was assessed with immunohistochemistry. Result The distribution of cell cycle of antisense hTERT transfected SGC7901 cells was changed, and the mRNA and protein expression of VEGF-C and Flt-4 was significantly down-regulated. Conclusion Anti-sense hTERT can act as an agent for inhibiting VEGF-C and Flt-4 mRNA and protein level, and it blocks tumor angiogenesis and lymphogenous metastasis.

This essay investigated the in vitro tumoricidal activity of Con A primed murine LAK cells (Con A-LAK), discussed the role of mTNF-? in the killing effect. The results showed that Con A-LAK cells could kill NK sensitive YAC-1, TNF sensitive L929 and H-2 low/non expression HCa-F target cells; The cytotoxicitity of Con A-LAK cells was performed by direct contact, the non-secretary pathway mediated by interaction of surface ligands of effector cells and receptors of target cells play an important role; Con A-LAK cells expressed mTNF-?, which participated in the killing of TNF sensitive tumor cells and might be one of the important effector molecules in MHC non-restricted, antigen non-specific cvtotoxicitv.

BACKGROUND:Early diagnosis and accurate treatment of ligament injuries are the premise of avoiding chronic instability of knee joint and promoting functional recovery of knee joint.
OBJECTIVE:To investigate the clinical efficacy of limited incision with autologous tendon graft for knee ligament injury.
METHODS:Eighty patients with knee ligament damage were randomly divided into two groups. The cases of control group were given orthosis treatment, and the cases of observation group were treated with the limited incision plus autologous tendon graft.
RESULTS AND CONCLUSION:At 6 months post-treatment, the excellent efficacy rate and postoperative quality of life score were increased in the observation group, compared with the control group (P<0.05). The active and passive ranges of motion of knee joint in the observation group were significantly lower than that in the control group (P<0.05). At 3 months post-treatment, Lysholmp scores of the observation group was significantly lower than that in the control group (P<0.05). Limited incision plus autologous tendon graft treatment can significantly improve knee function after knee ligament injury.

Cytokines is a kind of important factor on Pathogenic of hysteromyoma.Some study provides evidence that sex homone and its product of metabolism react up regulation/down regulation for hysteromyoma by growth factor. Apoptosis and oncogene and retinoid X have influence to the growth of hysteromyoma.

This paper discussed the different ways on the pharmacology of traditional Chinese medicine teaching to cultivate students' autonomous learning ability, promoting independent learning through PBL teaching, enhancing students' ability to think independently and practical operation using heuristic teaching.Survey results showed this student-centered, teacher-led, student-teacher interaction style pharmacology teaching model could improve the quality of teaching of Pharmacology.

Objective To evaluate the radioprotective effects of Quercetin (QN) on 6 Gy X-ray irradiation-induced immune dysfunction and toxicity in hepatic tissue in rats. Methods 40 adult rats were randomly divided into 4 groups. Group Ⅰ was injected intraperitoneally with saline solution for 7 consecutive day sand served as control group. Group Ⅱ was daily injected with QN (40 mg/kg) for 7 consecutive days. Group Ⅲ was irradiated with a single dose of 6 Gy X-ray. Group Ⅳ received a daily injection of QN (40 mg/kg) for 7 consecutive days, and 1 h after the last injection rats were irradiated with a single dose (6 Gy) X-ray irradiation.The animals were sacrificed after 24 h. Lymphocyte transforming rate was measured with MTT method, and CD+4 T, CD+4 T and CD+8/CD+8 T were measured with flow cytometry method. Oxidative conditions in liver were measured with malondialdehyde (MDA), reduced glutathione hormone (GSH), supernxide dismutase (SOD) andglutathione peroxidase (GSH-Px) activities kits. HE staining was used to observe the general condition of rat's liver. Results Lymphocyte transforming rate, CD+4 T, CD+8 T and CD+8/CD+8 T in rats of Group Ⅳ were all higher than those in rats of Group Ⅲ ( F = 8.455,22.644, 18.911, P < 0.01 ). MDA content in the Group Ⅳ rat's liver was lower than that in the Group Ⅲ ( F = 10.059, P < 0.01 ) and antioxidant enzymes SOD, GSH-Px activities were higher than those in Group Ⅲ (F = 23.688,186.046,19.788, P < 0.01 ). The capillary of the hepatic lobules dilated and congested obviously in portal area, involving infiltration of polymorphonuclear leukocytes in the Group Ⅲ, while QN improved this change apparendy. Conclusions Pretreatment with Quercetin improved the irradiated rat's immune functions and protected the irradiated rats from oxidative stress to some extent.

Objective: To investigate the effect of surgical reconstruction of congenital aural atresia via tympanic antrum approach and the prevention for reatresia of the aural canal. Methods: From 1993 to 1998, 89 patients (94 ears) with congenital aural atresia were operated via tympanic antrum approach. All of them got aural canals reconstruction and tympanoplasty, including 80 ears of type Ⅱ, 11 ears of type Ⅲ and 3 ears for fenestration of inner ear. Kenacort\|A and dilator were used to prevent reastresia of the aural canals. Results: The tympanic antrums of 94 ears were encountered smoothly, and their hearings were reconstructed. The hearing improvement were found over 20dB in 80 ears (85.1%), over 25dB in 49 ears (52.1%). Kenacort\|A and dilator should be applied when the reastresia began to appear, and then the good effect could be made. Conclusion: It′s easy to master for surgical reconstruction of congenital aural atresia via tympanic antrum approach, and it also owns the characteristics of safety, save time and reliable effect. It should be managed as soon as the reastresia appears.