Defensins, a family of 3-4 KD cationic peptides, have been found recently in the cytoplasmicgranules of human, rabbit, guinea pig and rat polymorphonuclear neutrophils and rabbit alveolarmacrophages. The defence roles of these molecules, such as antimicrobial activity, viral inactiva-tion, tumor cell cytotoxicity, chemotactic and opsonic actions, etc. have been adequately studied.In order to investgate the role of Defensins in the neutrphil-mediated pathological process ofsome diseases, we isolated and purified human neutrophil Defensins. By using Sephadex G100and Bio-gel P10 gel filtration chromatography, the purified molecules were obtained. The puritywas identified by AU-PAGE,SDS-PAGE, and amino acid composition analysis. In vitro fugicidalactivity of the purified human neutrophil Defensins against Candida albicans was also examined.When incubated with 33 Mol concentration of human Defensins, more than 90% of Candida,al-bicans were killed in the methylene blue assay system.

BACKGROUND: The filling compactness can not be guaranteed due to apparatus retention in traditional lateral condensation.The warm gutter filling can achieve good results because of the easy changeable of gutta-percha in softening states.OBJECTIVE: To compare the warm gutta-percha fillings (Obtura Ⅱ and BeeFill 2 in1 filling) and cold lateral compacted gutta-percha with the bypassing root canal preparation in the intracanal separated instrument of oval canal.METHODS: Firstlythe 60 oval root canals of fiat mandibular central incisors were randomly divided into three groups, with 20 teeth in each group. After that, the root canal was filled with BeeFill 2 in1, Obtura Ⅱ condensation, and lateral condensation.The percentage of void at 5-mm to root tip versus cress section area was observed under a scanning electron microscope.RESULTS AND CONCLUSION: Under in vitro condition, the difference of percentage of void area versus root canal area between the Obtura Ⅱ condensation group and the lateral condensation group had significance (P=0.013), and the similar difference could be found between the BeeFill 2 in1 condensation group and the lateral condensation group (P=0.014), but the difference had no significance between the BeeFill 2 in1 condensation group and the Obtura Ⅱ condensation group (P=0.088).The results revealed that the root canal can be sealed accurately when establish hypass root next to the separated instrument and filled with BeeFill 2 in1 warm gutter filling.

Objective To investigate the characteristics of the clinic manifestations and the electromyogram changes in patients with chronic N2hexane intoxication. Methods The clinic manifestations, the electromyography and nerve conduction velocities were analyzed in 9 patients with N2hexane intoxi2 cation. Results The main clinical manifestations of the disease were acroparesthesia and asthenia, especially in legs. The abnormality rate of electromyography in patients with N2hexane intoxication was 100%. The conduction velocity of the sensory nerve and the motor nerve decreased at a rate of 33.33% and 88.89% respectively. The distal latencies were prolonged( 100% ). The denervated electromyogram was 33.33%. Conclusion The main clinical manifestations of the disease were Peripheral neuropathy. The chronic N2hexane intoxication mainly led to the imparement, especially in the distal region of the motor nerve in legs,and the damages of the nerve could be related to the duration of exposure to N2hexane.

Intestinal microflora is a general term for microbial communities that reside in the human intestine. In recent years, the research on diseases related to intestinal microbiota has developed rapidly. It is found that intestinal microbiota is closely related to digestive tract diseases, metabolic diseases, immune diseases, mental diseases, and lung diseases. Intestinal dysbacteriosis, mucosal barrier damaging and local immune dysfunction may be involved in a variety of disease processes. In addition, respiratory diseases such as asthma and pneumonia seriously affect human health. The intestinal microbiota is crucial in regulating immune response of lung to pathological mechanism of diseases including asthma, pneumonia and pulmonary tuberculosis. Therefore, it may be a new direction for the treatment of lung diseases by understanding intestinal microbiota in lung diseases, and identifying, describing and manipulating immunity network of pulmonary disease.

Objective To investigate the efficacy and safety of trastuzumab combined with docetaxel chemotherapy in the treatment of stage Ⅲ breast cancer.Methods 150 cases of stage Ⅲ breast cancer patients from October 2013 to September 2015 in our hospital were selected and randomly divided into experimental group and control group,75 cases in each group,the control group were treated with cyclophosphamide and doxorubicin treatment,experimental group were treated with trastuzumab combined with docetaxel chemotherapy.To 21 days for a course of treatment,all patients were treated three courses.The levels of serum C reactive protein(C-reactive protein,CRP),the total effective rate and the incidence of adverse reactions in two groups before and after treatment were compared.Results After treatment,the level of serum CRP in the two groups decreased significantly,the difference was statistically significant(P<0.05),the CRP levels of serum in experimental group was significantly lower than the control group,the difference was statistically significant(P<0.05),the clinical total effective rate is higher,the difference was statistically significant(P<0.05),the incidence rate of adverse reaction was lower,the difference was statistically significant(P<0.05).Conclusion Trastuzumab combined with docetaxel chemotherapy can effectively reduce the inflammatory response in patients with stage Ⅲ breast cancer,improve clinical efficacy,and effectively reduce the adverse reactions of patients.

Objectives To summarize the experience of nursing care to children with dermatomyositis complicated with interstitial pneumonia.Methods The nursing histories of 11 cases of children dermatomyositis complicated with interstitial pneumonia were retrospectively looked into for summarizing the nursing measures.Results The diseases were both effectively controlled in all the children,who were given maintenance therapy by oral taking of hormone after discharge.Conclusion Such nursing measures as close observation of disease,enhanced nursing and first aid of respiratory failure,nursing of infection and secondary infection,care after mesenchymal stem cells transplantation,strengthened disinfection and isolation,are of significance for controlling the disease.

In recent years,the effects of ultrasound combined with microbubble contrast agent in treatment of tumors has been become a new research hot point,which may have great potential in tumor treatment.Low-power ultrasound radiating microbubble embolization angiogenesis therapeutics has been widely used in tumor treatment.Among them the following foundation research aspects can make great breakthrough,such as : target drug delivery,target gene therapy,increasing high-intensity focused ultrosound therapy efficiency etc.

HL-60 cells treated with 80?g/ml notogensenosidc R_1, were induced to granulocytic differentiation to 68% (among which metamyelocytes 32%, banded neutrophils 30% & segmented neutrophils 6%). Further experiment showed that the ability of the cell to reduce nitroblue tetrazolium (NBT) dye, phagocytosis, as complement receptors and activities of acid phosphatase and ?-glucuronidase were all enhanced after differentiation. There were significant differences between the treated groupand the control group in NBT positive rate (62% v. s. 10%, P

A number of low molecular weight cationic peptides, named defensins,were purified from neutrophil granuals. Its in vitro cytotoxicity to HL-60 cell line anddirect viral inactivation were examined. The results showed that when incubated with NP-1 and NP-2(100?g/ml) fot 6 hours, more than 60% of HL-60 cells were killed. WhenHerpes simplex virus type I(HSy-I) and influenza virus B strain Beijing 87-1 wereincubated with NP-1(260?g/ml) at 37?C in water bath for 60 min, a marked reduction(98.2% and 90% ) in virus TCID_50 was observed. The results suggested that neutrophilgranulocyte might be able to synthesize peptides which have the cytotoxic and antiviralacitivities.

OBJECTIVE:To observe the clinical efficacy and safety of Shuanghuanglian oral liquid combined with cefuroxime axetil in the treatment of bacterial respiratory tract infection. METHODS:184 patients with bacterial respiratory tract infection were randomly divided into test group and control group. Test group was orally given 250 mg Cefuroxime axetil tablet,twice a day+20 ml Shuanghuanglian oral liquid,3 times a day. Control group was only given Cefuroxime axetil tablet (the same dosage as test group). The treatment course for 2 groups was 2 weeks. The cough duration,body temperature recovery time and runny nose disap-pearing time before and after treatment and bacterial clearance rate in 2 groups were observed,clinical efficacy and incidence of ad-verse reactions were recorded. RESULTS:After treatment,the total effective rate in test group was significantly higher than control group,cough duration,body temperature recovery time and runny nose disappearing time were significantly shorter than control group,the differences were statistically significant(P<0.05);and there were no significant differences in the bacterial clearance rate and incidence of adverse reactions(P>0.05). CONCLUSIONS:The efficacy of Shuanghuanglian oral liquid combined with ce-furoxime axetil is superior to cefuroxime axetil alone in the treatment of bacterial respiratory infections,with similar safety.