This study sought to assess the effect of SspA on the formation of Staphylococcus aureus biofilm extending over the surfaces of Cardiovascular Biomaterial Dacron. SspA was extracted from the surface of staphylococcus aureus biofilm, purified, and then used to influence the adhesion of Staphylococcus aureus and the formation of Staphylococcus aureus biofilm on Dacron biomaterial surfaces. The formation of the Staphylococcus aureus biofilm on cardiovascular biomaterial Dacron surfaces under gradient SspA concentrations was evaluated by confocal laser microscopy. The result revealed that SspA inhibited the formation of Staphylococcus aureus biofilms on cardiovascular biomaterials surfaces effectively, and it was dose dependent. This study indicates that SspA is effective for preventing biomaterial centered infection and this method is conducive to clinical applications.
Bacterial Adhesion ; Biocompatible Materials ; chemistry ; Biofilms ; growth & development ; Polyethylene Terephthalates ; Prosthesis-Related Infections ; microbiology ; Serine Endopeptidases ; pharmacology ; Staphylococcus aureus ; pathogenicity ; physiology

BACKGROUND AND OBJECTIVEThe coal-fired pollution in Xuanwei area has been considered to be local main reason for high incidence of female lung cancer. The aim of this study is to explore the expression of PAH-DNA adducts in lung tissues of Xuanwei female lung cancer patients and to explore the relationship between the large number of coal-fired pollution PAHs materials and the high incidence of Xuanwei female lung cancer.

METHODSWe totally collected each 20 cases of Xuanwei female lung cancer patients, Xuanwei male lung cancer patients, Non-Xuanwei female lung cancer patients and collect each 10 cases of Xuanwei, Non-Xuanwei female patients with benign lung lesions. The cancer tissues, adjacent cancer tissues and normal lung tissues were collected in lung cancer patients and only the normal tissues were collected in benign lung lesion patients. There were total 80 cases and 200 tissues. Immunofluorescence was used to detect the expression of PAH-DNA adducts in each group. Image pro-plus 6.0 software was used to analyze the images and part quantified analysis. SPSS 13.0 statistical software was used to analyze the data.

RESULTSThe positive expression of PAH-DNA adducts in lung cancer tissues, adjacent cancer tissues and normal lung tissues of Xuanwei female lung cancer patients were 90%, 80% and 65%. They were higher than the positive expression of PAH-DNA adducts in Xuanwei male lung cancer patients (35%, 30%, 30%) and Non-Xuanwei female lung cancer patients (20%, 15%, 10%) (P < 0.01). The expressions in lung tissues ofXuanwei female benign lung lesion patients (positive expression is 70%) were higher than it in Non-Xuanwei female benign lung lesion patients (positive expression is 10%). With the direction changing from cancer tissues, adjacent cancer tissues to normal lung tissues, the expressions of PAH-DNA adducts were decreased but had no statistical difference (P > 0.05S).

CONCLUSIONThe expressions of PAH-DNA adducts in lung tissues of Xuanwei female were higher than which in Xuanwei male and Non-Xuanwei female.

Adult ; Aged ; Air Pollution, Indoor ; adverse effects ; Coal ; DNA Adducts ; analysis ; Female ; Humans ; Lung ; chemistry ; Lung Neoplasms ; chemistry ; etiology ; Male ; Middle Aged ; Polycyclic Aromatic Hydrocarbons ; analysis

BACKGROUND AND OBJECTIVEFast track surgery (FTS) is a systematical method to accelerate the recovery of surgical patients by reducing the physical and mental trauma stress of them. The research is to investigate the feasibility of FTS application in lung cancer surgery.

METHODSA total of 80 cases of lung cancer patients with single leaf lobotomy resection were randomized into two groups. While the experimental group was treated with the conception of FTS, and the control group was treated with the traditional methods. The incident rate of post-operation pain degrees, telecasts, pleural effusion, the post-operation time stay in hospital time and the total cost during hospitalization in two groups were compared respectively.

RESULTSIn FTS group: the VAS score of post-operation pain at 1 h, 6 h, 12 h, 24 h and 48 h all significantly decreased compared to the traditional therapy group. The incidence rate of telecast was 10.53%. The incidence rate of pleural effusion was 26.31%. The length of stay after operation was (4 +/- 1) d and the total cost was RMB 15 600 +/- 7 600. In the control group, the above values were 77.78%, 33.33%, 22.22%, (9 +/- 1) d, RMB 23 600 +/- 5 400, respectively. The post operation pain (VAS method) of FTS group was remarkablely below the control group. There has significant difference of the incident rate of telecasts, stay time in hospital and the total cast in two groups (P < 0.05). No significant difference was observed in the incident rate ofpleural effusion.

CONCLUSIONThe new methods of FTS can apparently accelerates recovery after lung cancer resection, reduces complications, shorten timestay in hospital and cut down the total cost.

Adult ; Aged ; Female ; Humans ; Lung Neoplasms ; surgery ; Male ; Middle Aged ; Pulmonary Surgical Procedures ; Treatment Outcome