Objective To evaluate the specific methods and clinical efficacy of docetaxel combined with doxorubicin in the treatment of locally advanced breast cancer and to evaluate its safety.MethodsThe clinical data of 72 pitients with locally advanced breast cancer who were treated in our hospital from July 2012 to July 2016 were retrospectively analyzed.According to the random double blind method,the patients were divided into the control group and the experimental group,with 36 cases in each group.The control group were treated with cyclophosphamide,5-fluorouracil and ammonia armor pterin methotrexate treatment,the experimental group were treated with docetaxel combined with adriamycin treatment,21 days for a cycle,withThe clinical curative effect,toxicity and quality of life were compared between the two groups of patients two cycles of treatment after the completion of the assessment.Results The total remission rate of the experimental group was 75.0％,which was significantly higher than that in control group 41.7％(P<0.05); the main adverse reactions were gastrointestinal reaction and bone marrow suppression,two groups of patients with 0-I,nausea and vomiting,hair loss,diarrhea,fatigue,white blood cell reduction,blood loss,blood loss,heart rate disorders,abnormal liver function and peripheral phlebitis.Two groups were compared.The two groups had no significant difference.Conclusion Docetaxel combined with adriamycin in the treatment of locally advanced breast cancer had definite and toxic and side reaction were slightly in patients can tolerance range,to promote the rehabilitation of patients,improve the quality of life has a very positive significance for popularization and application in the medical practice.

Objective: To isolate the key domain of a novel polypeptide fragment from NGN-β that functions like intact NGF molecule.Methods: NGF-β had been treated with cyanogen bromide and trypsin skillfully. The peptide fragment with the activity inducing PC12 pheochromocytoma cells differentiation was isolated and purified by Sephadex G-50 gel filtration chromatography , DE-52 celluloseion exchange chromatography and C-18 reversed-phase column HPLC after NGF-β cleavaged by CNBr at 9th met then by trypsin at Arg or Lyscleavaged by CNBr at 9th met then by trypsin at Arg or Lys. Amino acid sequencing of this novel peptide fragment was performed by Automatic Amino Acid Analyser and Amino Acid Sequencer. Results: The functional fragment from cleavaged NGF might induce differentiation of PC12 cells. The fragment was consisting of two linear polypeptides . One of them was 16 peptide, GEFSVCDSVSVWVGDK , and other was 14 peptide, HWNSYCTTTHTFVK, linked by a disulphide bridge corresponding to residues 10～25 and 75～88, respectively, of the amino acid sequence of nerve growth factor, the result of biological activity assay in PC12 cells showed that the optimum concentration of this peptide were 0.001～0.1 μg*L-1. Conclusion: A novel peptide inducing differentiation of PC12 cell line of pheochromocytoma cells was obtained in the study. It′s isolation and purification successfully will underlie synthesis or expression of hyperactive neurotrophic small molecular substance although the relationship between the configuration and functions is not clearly.

Background contamination is a major problem in the analysis of organophosphate esters (OPEs). In this study, the possible sources of OPEs pollution were screened and several different ways were applied to minimize the blank contamination. Under the strict quality control measures, the cleanup efficiency of different solid phase extraction (SPE) was investigated for OPEs in different environmental matrices. A method was developed for the detection of 7 OPEs in dust, soil and sediment samples by gas chromatograph coupled with mass spectrometry ( GC / MS). Target compounds were extracted by hexane:dichloromethane (1 : 1, V/ V) followed by aminopropyl silica gel SPE column cleanup for dust, and target compounds in soil and sediment were Soxhlet extracted and cleanuped by two-step SPE. The results showed that the aminopropyl silica gel SPE column displayed the best purification performance among the three employed columns. Instrumental detection limits among the 7 OPEs ranged from 2. 5 to 25. 8 μg / L, and the method limits of quantification (MLOQs) in dust and soil sample ranged from 1. 4 to 15. 7 ng / g and 0. 3 to 2. 9 ng / g, respectively. The average recoveries of 7 OPEs in different matrices ( dust and soil) at two spiked concentration levels ranged from 67. 9% to 117. 4% . The proposed method was successfully applied to detect OPEs in different environmental matrices collected in Shanghai.