Objective To investigate the drug resistance of Staphylococcus haemolyticus and provide basis for selection of clini‐cal drugs .Methods A total of 59 strains of Staphylococcus haemolyticus were isolated from patients ,and analyzed the clinical dis‐tribution and drug resistance of them .Results Staphylococcus haemolyticus were mainly isolated from the sputum and oropharyn‐geal swabs in pediatric and ICU .The patients were mainly newborns .Staphylococcus haemolyticus mainly included methicillin re‐sistant Staphylococcus haemolyticus (MRSH) ,accounting for 89 .8% (53 strains) .MRSH showed high‐drug resistance and multi‐drug resistance .However ,it was sensitive to vancomycin ,teicoplanin and linezolid ,the antibiotic sensitive rate was 100 .0% .Conclu‐sion Staphylococcus haemolyticus is an important coagulase negative staphylococci ,mainly including MRSH ,which shows high‐drug resistance and multi‐drug resistance .

The investigation of characteristic databases in 22 domestic colleges or universities of traditional Chinese medicine showed that the information resources have not been fully developed and the developed databases of tradi-tional Chinese medicine lacked of deep hierarchies.It was pointed out that updating their contents and deepening their hierarchies are the developing orientation for the characteristic databases of traditional Chinese medicine.

Objective To study the apheresis procedure of collecting mononuclear cells from bone marrow for clinical treatment.Methods Bone marrow mononuclear cells were separated from bone marrow using COBE Spectra apheresis system.Cell morphology,cell counts,positive expression of CD34+,CD133+,CD271+ were detected,and the recovery rate of nucleated cell and mononuclear cell were also calculated.And the main parameters of the procedure with upper efficiency were set via data analysis.Results The efficiency of collection line with colourimetric card of 3% was higher than that of 5% and of 7%.The recovery rate of mononuclear cell is 75% when the cycle times ranged from 7 to 9.The positive expression of CD34+,CD133+ and CD271+ were 1.17%,0.63%,and 0.53%,respectively.Conclution This mononuclear apheresis procedure is safety,pollution-free and efficient,and remaming the bone marrow could be retransfused to the donor.

Objective To determine mitochondria-associated signaling pathway on cell apoptosis in Leptospira interrogans infected murine mononuclear-macrophages. Methods A cell apoptotic model of L. interrogan serogroup Icterohaemorrhagiae strain Lai inducing apoptosis of murine mononuclear-macrophage line (J774A. 1) was established. Pathological changes of mitochondria in the infected cells were observed under transmission electron microscope. Mitochondrial potential and reactive oxygen species(ROS) levels in the infected cells were detected using JC-1 staining method and DCFH-DA fluorescent probe, respectively,and caspase-8/-9 activities in the infected cells were measured using commercial kits. and the apoptosis block effects of caspase inhibitors were determined by flow cytometry. Apoptosis in the infected cells and ap-optosis-blocking effect by caspase inhibitors were detected by flow cytometry. Western blot assay was adopted to examine the levels of cytochrome C (CytC) , AIF, EndoG and Smae in the mitochondria and cytoplasm.The transposition of either AIF or EndoG from the cytoplasm into cell nucleus was determined by immunoflu-orescence staining test. Results L. interrogans strain Lai could induce J774A. 1 cell apoptoais. In the in-fected cells, visible mitochondrial injury, declined mitochondrial membrane potential and elevated ROS level were presented. The activity of caspase-8 but not of caspase-9 was significantly increased. The caspase in-hihitors could not completely block the cell apoptosis. Both the AIF and EndoG was released from the mito-chondria and subsequently transferred from the cytoplasm into the nucleus in the infected cells. However,elevation of CytC level and Smac release in cytoplasm of the infected cells could not be found. Conclusion L.interrogans can induce apoptosis in the infected mononuclear-macrophage via AIF and EndoG belonging to caspase-independent pathway.

Background and purpose:Chemotherapy including anthracyclin and taxanes is one of the effective regimens for patients with advanced breast cancer, but 20%-30% patients do not achieve a satisfactory curative effect .At present, there is no unified standard second-line chemotherapy regimen for these patients. We studied the efficacy and toxicity of gemcitabin plus capecitabine in the treatment of the patients with advanced breast cancer who had failed in response to the treatment of anthracyclin and taxanes chemotherapy. Methods:Gemcitabin 1 000 mg/m2 iv infusion at d1,8 and capecitabine 950 mg/m2 po tid at d1-14.The interval between the two cycles was 3 weeks. The assessment for clinical effect and side effect was conducted for the patients with completion of 2 cycles of chemotherapy at least.Results:30 female patients were enrolled in this trial ,overall response rate was 46.7%,with 6.7% complete response (2/30)and 40% partial response (12/30). Stable disease was seen in 42.3%(13/30),and disease progression in 10% (3/30).Median time to progression was 9 months, and median overall survival was 12.5 months. The main toxicities were myelosuppression and hand-foot syndrome.Conclusions:Gemcitabin plus capecitabine is effective for the patients with advanced breast cancer who failed in the treatment of anthracyclin and taxanes chemotherapy, and its side effect is tolerable.

Objective:To collect and analyze the quality control data of ventilator, so as to apply these statistical data to guide the maintenance and management of ventilator.Methods: The displayed value and monitoring value of the tidal volume, respiratory frequency, inspiratory oxygen concentration, inspiratory pressure level and positive end expira tory pressure (PEEP) under different setting of 50 using ventilators in hospital were collected by using PF-300 gas analyzer, and then each parameter was analyzed as classification.Results: The total quality rate of ventilators was 80%, the ranking of quality rate as different brand was: brand B>brand A>brand C, and it was as different department: department 5>department 4=department 3>department1>department2, and the quality rates of less than 3 years and more than 3 years were 87% and 77%, respectively, as service life of ventilator. And the ranking of quality rates as parameters of ventilator was: PEEP=respiratory frequency >peak pressure>tidal volume >oxygen concentration. It was as accuracy of monitoring: brand A>brand C>brand B. It was as stability of monitoring: brand A>brand B=brand C. On the other hand, it was as the accuracy of displayed value: brand A>brand B>brand C, while it was as the stability of displayed value: brand A>brand C>brand B.Conclusion: The analysis of quality control data only suits to the ventilator which is used in our hospital. The engineer can targeted to strengthen the ventilator maintenance work and improve the quality and safety of equipment, so as to give the better service for patients according to quality control data of using ventilators in hospital.

Objective: To explore heart rate variability (HRV) and arrhythmia in patients with resistant hypertension.
Methods: Our work included 3 groups:Resistant hypertension (RH) group, n=39, Non-resistant hypertension (NRH) group, the hypertension could be controlled by 1-3 medications, n=42 and Control group, composed of 40 healthy subjects. The 24h ambulatory blood pressure and electrocardiogram were monitored, the time-domain of HRV and arrhythmia parameters were compared among 3 groups which including standard deviation of all normal RR intervals (SDNN), standard deviation of the average normal RR intervals for all 5-min segments (SDANN), the mean of standard deviation of all 5-minute RR intervals (SDNN Index), the root mean square of the differences between adjacent R-R intervals (rMSSD) and the percentage of adjacent R-R intervals varied by more than 50 ms (pNN50).
Results: Compared with Control group, both RH and NRH groups showed decreased time-domain HRV parameters, all P<0.05. Compared with NRH group, RH group had the lower time-domain HRV parameters, all P<0. 05, while the rMSSD was similar between 2 groups (t=-1.5048, P=0.1364). The rates of arrhythmia in both RH and NRH groups were higher than Control group. The incidences of premature atrial contraction and atrial tachycardia were higher in RH group than NRH group, P<0.05, while the premature ventricular contraction, ventricular tachycardia and A-V block were similar between 2 groups, all P>0.05.
Conclusion: RH patients had decreased HRV and increased arrhythmia, especially with the higher incidence of atrial arrhythmia.

BACKGROUND:The relationship between long-term heavy drinking and alcohol-induced necrosis of the femoral head has long been clear, but thepathogenesis of alcohol-induced necrosis of the femoral head is currently not fuly understood.
OBJECTIVE:To establish a rat model of alcohol-induced avascular necrosis of femoral head and to study its pathogenesis.
METHODS: Eighty Wistar rats were randomly divided into experimental and control groups (40 rats per group). Rats in the experimental group were intragastricaly administered strong wine 10 mL/kg, once a day, for 6 consecutive days. Rats in the control group were given physiological saline 10mL/kg, once a day, for 6 consecutive days. Bilateral femoral heads were randomly colected from six rats every month for histomorphological observation.
RESULTS AND CONCLUSION:(1) Osteonecrosis: in the experimental group, at 3 months, trabecular bone became thin, arranged disorderly, and the number of empty lacuna began to increase. At 6 months, typical osteonecrosis appeared, and vacant lacunaes increased significantly. In the control group, trabecular bone was complete and neatly arranged. Osteocytes were visible in bone lacuna, and normal morphology of cels was seen. (2) Injury of blood vessels: in the experimental group, at 3 months, micro-intimal hyperplasia was observed. Elastic fibers of partial vascular endothelium were reduced. Elastic fiber andmiddle-layer smooth muscle breakage and proliferation were found. At 6 months, above manifestations were more remarkable. In the control group, arteriole film was not thickened, and vessel wal was normal. (3) Formation of microthrombus, in the experimental group, the number of microthrombus was increased at 3 months, and became significant at 6 months. In the control group, the number of microthrombus was not altered. (4) Results indicated that chronic alcohol intake can lead to microvascular endothelial injury in the rat femoral head. Abnormal blood microcirculation was detected in local region, and resulted in avascular necrosis of the femoral head. The degree of necrosis was associated with alcohol intake.

This paper was to explore the relationship between plasma omentin and obesity and insulin resistance in patients of polycystic ovary syndrome(PCOS).The results showed that there were statistically significant differences in serum omentin levels among control group,PCOS-normal weight group,and PCOS-overweight group [(115.29 ± 33.92),(111.12 ± 34.50),and (42.85 ± 19.39) pg/ml,P＜ 0.05].Omentin were negatively correlated with homeostasis model assessment for insulin resistance(HOMA-IR) and body mass index(BMI).In the multiple stepwise regression analysis,only omentin was negatively correlated with BMI.Omentin may be involved in the development of PCOS by affecting obesity.

Cystic echinococcosis is one of the most widespread and severe zoonotic helminthic diseases .To understand the phylogeny and genetic polymorphism Echinococcus granulosus (E .granulosus) prevailed in south region of Qinghai Prov-ince ,partial fragment of cytochrome oxidase Ⅰ (COX Ⅰ ) gene sequences were used to infer the phylogenetic relationship of 59 collected samples of E .granulosus in Qinghai Province .Total 72 sequences (13 sequences from GenBank) were aligned using CLUSTAL X ,and then ,Bayesian analyses were performed in Mrbayes-3 .1 .2 .The results revealed that Echinococcus spp .isolates did not form a monophyletic group .The most samples clustered with E . granulosus strain (G1) (AB297617) , but showed high genetic polymorphism .Another three samples clustered with E .multilocularis (AB018440) ,while they showed complex phylogenetic relationships among them ,further indicating that Echinococcus spp .isolates from Qinghai Prov-ince may has a more complex evolutionary history than expected .