The atomic force microscope (AFM), an indispensable tool on the field of scientific research of life, has been uesd to study the biomacromolecule rescently. The new progress on hyaluronic acid (HA) and tubular myelin (TM) through the tool vas obvious. Thestudy on super-elementary units of chromatin in the nanometer (nm) scale is a base step for the higher level. AFM provided the possibility of killing viras in physical method, with studying on the effect of the mechanical resonances on living cells. As far as the medicine concerned, basic condition of test in clinic pathodogy has been formed in some fields.

Objective To investigate the effects of a new radiosensitizer, nitroimidazole-derivative--Doranidazole on pancreatic cancer cells under hypoxic condition. Methods The human pancreatic cancer cell lines were exposed in vitro to a single fraction of high dose?-ray radiation either with doranidazole or under hypoxic condition. The percentage of dead cells was analyzed with a multiwell plated reader and the fluorescence intensities of propidium iodide before and after a digitonin tratment were measured. The sensitizing effect of doranidazole on cell killing by high-dose irradiation was evaluated by time-course, dose-dependency, and microscopic observations. The selective radiosensitive effect of doranidazole on hypoxic cells was evaluated by flow cytometry. Results Of seven pancreatic cancer cell lines, the mortalities of 5 cell lines were significantly increased in presence of doranidazole under hypoxic condition 5 days after 30 ?Gy irradiation, but not under aerobic condition. Meanwhile, the radiosensitizing effect of Doranidazole on pancreatic cancer cells was demonstrated as time- and dose-dependent manner. Conclusion Doranidazole can enhance the radiosensitivity on pancreatic cancer cells under hypoxic condition with high-dose irradiation.

Although the treatment has made great progress in breast cancer, there are still many problems. For example, primary or secondary on chemotherapy drug resistance and the limitation of treatment in triple-negative breast cancer. So, targeted therapy has become a new strategy to improve this situation. Previous studies showed that the occurrence of breast cancer may be related to the activation of PI3K/Akt/mTOR signaling pathways, and mTOR is an index to judge the prognosis. Parts of breast cancers can obtain clinical benefit with mTOR inhibitors, and it might be a potential treatment target in breast cancer.

Objective To Study the relation between analgesic action of alcohol extraction of Natrix tigrina Lateralis and central nervous system. Methods Manifold ache models of experimental nerve centre were established to observe the analgesic action and degree of alcohol extraction of Natrix tigrina Lateralis to the ache models. Results Alcohol extraction of Natrix tigrina Lateralis had analgesic action to all ache models of nerve centre, and the high-dose group was obviously. Conclusions Analgesic action of alcohol extraction of Natrix tigrina Lateralis is related to effecting on central nerves system, which effects antinociceptive in central nervous.

Objective To analyze the clinical features in multiple myeloma(MM)patients, and the summaries the treatment effect of different therapies. Methods The clinical initial symptoms, laboratory data,clinical efficacy of treatment with MP, M2, VAD, BD,T hal + DEX and other chemotherapy in 120 patients newly diagnosed with multiple myeloma were retrospectively analyzed. Results Among 120 MM cases,the incidence peak was situated in 40 - 60 years age group, the mean age at oneset was 54 years, which indicated that the onset age were getting younger in China. Bone pain, anemia, infection were the most common initial symptoms of MM. In terms of clinical efficacy:①Significant difference between MP and VAD programs(χ2 = 10. 626,P ＜0. 05＝,but no significant difference between MP and M2 programs(χ2 = 2. 439, P ＞ 0. 05), MP and Thal + DEX programs(χ2 = 5. 870, P ＞0. 05. ②Significant difference between M2 and VAD programs(χ2 = 8. 307, P ＜ 0. 05＝; No significant difference between M2 and Thal + DEX programs(χ2 = 2. 592, P ＞ 0. 05). ③ No significant difference between VAD and Thal +DEX programs(χ2 =0. 916,P＞ 0. 05). ④BD program is the most efficient program,but this discovery need further confirmation because of the small number of cases observed. Conclusions At present, chemotherapy is the main treatment for MM, most scheme like MP, M2, VAD, BD, etc. , have certain effect depend on different patient groups but remain improving. The choice of appropriate chemotherapy and autologous or allogeneic hematopoietic stem cell transplantation will help to improve the prognosis of the disease.

AIM: To observe whether metallothionein plays a role in cardiac protective effect of basic fibroblast growth factor on anoxic/reperfusion (A/R) injury in cultured cardiomyocytes and study the possible mechanism of cardiac protection by bFGF.METHODS: The present study made the model of myocyte A/R injury after having a 24 h incubation by bFGF( 10-10、10-9、10-s mol/L) and bFGF( 10-9 mol/L) + PD098059 respectively. We measured the levels of MT and MDA in myocytes, and the changes of LDH and protein in cultured medium. We also counted the number of viable cell in groups. RESULTS: The contents of myocardial MT were significantly increased after treatment by bFGF. The levels of MT in I0-l0 mol/L、10-9 mol/L and 10-8 mol/L bFGF treated groups increased 54 %、 62%、 76% respectively, compared with the A/R group, and the number of viable cell were also greatly increased, LDH and protein leakage in cultured medium and MDA contents in myocyte were dramatically decreased in bFGF treated groups. All the protection were completely disappeared with the inhibition of MT production with PD098059, theinhibitor of mitogen- activated protein kinase(MAPK). CONCLUSION: MT involves in the protection of bFGF in cultured cardiomyocytes. It might be related with activation of MAPKase.

BACKGROUND:Total knee replacement is regarded an effective treatment of knee osteoarthritis, based on the transformation of biology-psychology-social medicine pattern, the concept of“quality of life”has attracted increasing concerns.
OBJECTIVE:To observe the effects of total knee replacement surgery on the pain, function and quality of life among elder patients with severe knee osteoarthritis.
METHODA total of 102 elder patients with severe knee osteoarthritis were recruited from the Second Affiliated Hospital of Inner Mongolia Medical University between January 2010 and January 2013. The clinical manifestations and 12-month fol ow-up outcomes were observed and recorded. The involved patients were randomly divided into two grouptreatment group (59 cases, receiving total knee replacement) and control group (43 cases, receiving expectant treatment such as drugs, but no surgery). Patients were evaluated using HSS scale and WHOQOL-100 scale before surgery and 12 months after surgery. Furthermore, the correlation between influencing factors and HSS and WHOQOL-100 scores was analyzed.
RESULTS AND CONCLUSION:At 12 months postoperatively, the HSS scores of patients in treatment group was (82.03±10.17) points, which was obviously higher than that in control group (P<0.01). The WHOQOL-100 scores in treatment group were also significantly higher than that in control group (P<0.01). The psychology sub-item scores of patients after total knee replacement were close to that of normal controls (P>0.50). The regression analysis shows that marital status (β=1.988), complication (β=2.035) and HSS scores (β=2.108) are the main influencing factors for the quality of life among patients undergoing replacement. Experimental findings indicate that, HSS score is an effective indicator to assess the effect of total knee replacement on the pain and function of elder patients with severe knee osteoarthritis. WHOQOL-100 is introduced to further improve the assessment of quality of life after total knee replacement surgery in severe knee osteoarthritis. The marital status, complication and HSS scores are the key influencing factors for the quality of life among severe knee osteoarthritis patients. Deep vein thrombosis affects the out-of-bed time, and the mate-accompanying during the fol ow-ups plays a positive role on the quality of life and mental state of patients.

Objective To observe the effect of Lisui Decoction in treating low-risk type myelodysplastic syndrome (MDS).Methods 79 such cases were randomly divided into a group treatment group with 45 cases and a control group with 34 cases.The treatment group Was treated wim Lisui Decoction and the control group was treated with Stanozolol RAS and vitamin B6.Such indexes as clinical curative effects,peripheral blood,and changes of T cell phenotypic subpopulations and medulla picture were observed.Results There was between the treatment group and the control group.The CR rate was 8.57%and 2.94%.and the total effective rate was 71.1%and 38.2%in the treatment group and the control group respectively,showing significant difierence.The peripheral blood.T cell phenotypic subpopulations and the dysplastic hematopoiesis in erythroid also showed significant difiefences.Conclusion Lisui Decoction can improve hematopoiesis of bone marrow and it is effective in treating low-risk type myelodysplastic syndrome.

Objective To find out about the allocation of large size medical facilities in Tangshan City so as to make rational use of its health resources. Methods On the spot investigations were combined with surveys through questionnaires to find out about the allocation of large size facilities in second tier hospitals and above in the city. Results There are altogether 109 large size medical facilities in the city, averaging 15.60 per million people. The allocation number is pretty high, and yet the distribution is quite irrational, with the city proper owning 70.67% of the facilities while its population and land area account for only 24.06% and 8.10%. Conclusion The allocation number has been increasing rapidly and the level of grade is rather high, and yet there lacks equity in distribution.

Objective:To observe anti-DR5 monoclonal antibody on apoptosis and CDC effect in EC109 cells.Methods:The anti-DR5 monoclonal antibody was prepared by hybridoma technique.Tumoricidal effects and complement-dependent cytotoxicity of the McAb to EC109 cells was screened by MTT assay.The apoptosis of EC109 cells was detected by flow cytometry with annexin Ⅴ-FITC/PI staining.Morphological change of EC109 was observed by microphotograph.Results:An anti-DR5 monoclonal antibody was obtained.It induced apoptosis of EC109 dose dependently.The cytotoxic action was notably enhanced by addition of complement.The cells growth inhibition ratios reached 83.04%.The apoptotic body and cathepsis were seen in microphotograph.Conclusion:The anti-DR5 monoclonal antibody could induce EC109 cells apoptosis and cause the complement dependent cytotoxic (CDC) effects powerfully.