AIM: To optimize the microemulsion containing tetramethylpyrazine phosphate in order to increase its transdermal delivery in vitro. METHODS: Pseudo-ternary phase diagrams were prepared to obtain the microemulsion areas at different ratio of surfactant to cosurfactant.In these areas,the formulation of microemulsion was optimized with four dimension simplex lattice method and the optimization equation was constructed,the accuracy of which was tested.With aid of SOLVER subprogram,the maximal value of transdermal flux and the formular of optimization microemulsion were calculated according to the equation.The diameter and stability of optimization microemulsion were tested. RESULTS: The experiment values from simplex lattice system were close to that of the predicted value from the equation.And the transdermal flux in vitro of optimized formular was 13.89 ?g/cm~(2)?h,It is mean diameter of 12.5 nm,and stable in six months. CONCLUSION: The optimization equation can predict transdermal flux of microemulsion system.The drug transdermal flux of the optimization formular improves significantly.That is stable in six months at mild temperature.

Objective:To observe the efficacy of different forms of triamcinolone acetonide( TA) in the treatment of buccal erosive oral lichen planus (EOLP). Methods:120 EOLP patients were randomly divided into 4 groups(n=30) and treated with Kangfuxin mouth-wash followed by topical ointment of( TA) , TA injection, TA mouth-wash and only Kangfuxin mouth-wash only, respectively. Before treatment, 1, 2 and 4 weeks after treatment, the pain (VAS score) and erosion area were measured, the effects were compared among groups. Results:The VAS scores of A, B and C groups were significantly lower than those of the control group after 1, 2 and 4 week treatment, and the total effective rate was significantly higher than that of the control group, respectively(P<0. 05). The VAS score was lower and total effective rate was higher in group A and group B than those in group C(P<0. 05), but there was no statistically sig-nificant difference between group A and B(P>0. 05). The average erosion area of group A and B was significantly smaller than that of the control group after 1, 2 and 4 week treatment(P<0. 05). There was no significant difference between group C and the control group after 1 and 2 week treatment(P>0. 05), but 4 weeks after treatment, the average area of erosion of group C was significantly smaller than that of the control group(P<0. 05). Conclusion:Triamcinolone acetonide is effective in the treatment of OLP and the oral oint-ment form is safe and convenient for OLP treatment.

Immunological imbalance is the foundation for the development of liver damage or fibrosis.Therefore,the treatment of liver disea-ses not only relies on regenerative medicine for cellular replacement,but also depends on immunoregulation.The immunological basis of liver injury and repair,the immunological basis of multipotent stem cells for allograft,and the research advances in the immunoregulatory effect of stem cells in the treatment of liver diseases demonstrated that multipotent stem cells,especially mesenchymal stem cells,have low immuno-genicity and cause immunosuppression,with the immunological basis of allograft;in addition,they can improve the local immune microenvi-ronment of the liver by immunoregulation to reduce the liver injury caused by immune response.It is suggested that multipotent stem cells, which meet the requirements of cellular replacement and immunoregulation in the liver,will become an ideal treatment of liver diseases.

The paper introduces using MedlineR to carry out data mining from Medline, for observing the gene relation, and using Pajek to realize the visualization of the results. Practice proofs that MedlineR could help researchers come up with assumptions in the field that they are interested in, and get a visual fingerprint. These results are the bases to go to more complex literature data mining and an important supplementary to experimental methods.

The research capacity of a hospital has become an important criteria for hospital evaluation, Research activity and capacity in the hospital plays an important role in improvement of clinical care for patients.A tumor Hospital in Tianjin, has taken a full academic advantages and strengthen,providing strong support in research funding;standardizing the management on research outcome, and emphasize on translation of clinical research in recent years.We have explored the effective management model in scientific research activity.

Objective To explore the targeted nursing care for patients with severe traumatic brain injury complicated with intracranial infection. Methods 35 patients of severe traumatic brain injury complicated with intracranial infection from January, 2009 to December, 2011 were reviewed. Results There were 10 cases cured, 12 cases improved very well, 4 cases improved, 5 cases invalid and 4 cases died. The total effective rate was 62.86%and the fatality rate was 11.43%. Conclusion Intracranial infection can be controlled effectively by the venous and intrathecal injection of antibiotics and targeted care in the patients with severe traumatic brain injury.

Objective To obtain the gene coding for the group 5 allergens from Dermatophagoides farinae ( Derf5 ) and predict its molecular characteristics. Methods The total RNA of D. farinae were extracted, and the gene Derf5 was amplified by RT-PCR with the primers designed according to previous sequence published in GenBank. The target gene was linked into pMD19-T Simple plasmid, sequenced and analyzed by bioinformatics software. Results The sequence homology reached to 97.8% between our sequenced result with one complete open reading fragment (ORF) and the reference. The gene encode an extracellular hydrophobic protein with 132 amino acid resides, one signal peptide from 1 to 19 position and one transmembrane domain from 1 to 19 position. The secondary structure was composed of extended strand (1. 52% ), random coil (7.58%) and alpha helix (90.91%). The encoded protein was deduced to have two Casein kinase Ⅱ phosphorylation sites. The similarity of the amino acid sequence of the group 5 allergens were 78% between D. farinae and D. pteronyssinus. Conclusion The gene Derf5 was cloned successfully, and its characteristics was primarily predicted.

Objective To propose new policies and strategies that will optimize the transformation of medical research achievements at hospital level.Methods In this paper,we systematically analyzed the characteristics and influencing factors of the transformation of medical research achievements based on the status quo in our hospital.Results In our hospital as an example,major problems in the transformation of medical research achievements identified as low investment,low conversion rate,complex procedures,multi-links existed and more multi disciplinary cooperation needed.Conclusions The hospital can take some measurements to optimize the transformation of medical research achievements,such as more stream lined management of scientific research project,establishing and improve the platform for scientific research transfer,increasing the funding,strengthening cooperation among different disciplinaries,building a professional team to promote the transfer and so on.

Adult ; Aged ; Colectomy ; Colonic Neoplasms ; pathology ; surgery ; Female ; Gastrectomy ; Humans ; Male ; Middle Aged ; Rectal Neoplasms ; pathology ; surgery ; Rectum ; surgery ; Stomach Neoplasms ; pathology ; surgery ; T-Lymphocyte Subsets ; pathology ; T-Lymphocytes, Cytotoxic ; pathology ; Th1 Cells ; pathology ; Th2 Cells ; pathology

Objective To study radiation -induced lung damage after lung ionizing radiation and the temporal and spatial release of pro -inflammatory cytokines of interleukin -6(IL-6),interleukin-8(IL-8) and interleukin-10(IL-10)in the irradiated lung tissue.Methods BALB/C male mice weighted around 25 g were randomly divided into two groups:radiation group ( R) and control group ( C) ,with 30 mice in R group and10 mice in C group.The thorax of mice was irradiated by 6 MV X-ray with 25 Gy in 5 fractions.The mice were sac-rificed at 12 weeks post irradiation.Lung tissues were collected and embedded in paraffin .After HE staining,lung histopathological changes were detected by immunohistochemistry to detect IL -6,IL-8 and IL-10 expression in lung tissue.Results Immunohistochemistry results showed that the expressions of IL -6,IL-8 and IL-10 were mainly expressed in macrophages and inflammatory cells .The results showed that the expressions of IL -6 and IL-8 in R group were significantly higher than that in C group .IL-10 expression level was lower than C group.Conclusion After 12 weeks exposing to radiation ,cytokines of IL-6,IL-8 and IL-10 in lung tissue are associated with radiation -induced lung injury .