The skin ulceration syndrome of sea cucumber is a kind of desease induced by bacterium.In order to investigate the bacterium of infected sea cucumber and detect the N-acyl-homoserine lactones(AHLs) se-cretion of the bacterium,7 bacterial strains were isolated from the infected sea cucumber.These strains were identified by physiological-biochemical characteristics and 16S rDNA sequence.Results show that strain C6 belongs to Tenacibaculum,strain 4 belongs to Shewanella putrefaciens group,strain TB belongs to Vibrio,strain BP2,BP3,BP4 and BP6 belong to Pseudoalteromonas,respectively.AHLs were detected with strain Agrobacterium tumefaciens KYC55.Among these bacterial strains,strain C6,4,TB,BP3 and BP4 can se-cret AHLs,while strain BP2 and BP6 can’t.And the AHLs activity differs,from the highest to the lowest are 4,TB,BP4,BP3 and C6.

Objectives To study the level and development of serum specific antibody against severe acute respiratory syndrome coronavirus(SARS-CoV)of different populations in SARS pestilence district after SARS outbreak in a general hospital.Discuss SARS sub-clinical infection and protective action of the IgG antibody.Methods Seroepidemiology method,enzyme-linked immunosorbent assay (ELISA)and indirect immunfluorescence assay(IFA)were employed to investigate the changing level of serum antibody to SARS-associated coronavirus in non-SARS population in SARS pestilence district during and after SARS outbreak.The development of IgM and IgG antibody in patients with SARS in 6 weeks after the onset of SARS was studied qualitatively.The level changing of IgG antibody in con- valescent patients with SARS in 82 weeks after the onset was observed dynamically.Results The ELISA test outcome of IgG antibody was negative in 200 non-SARS people who were random samples of normal mass in SARS pestilence district and common community.The positive rate was 0.41% in 487 SARS high risk population tested by ELISA,but showed negative when retested by IFA.The A value level of IgG antibody existed significant difference in non SARS mass during and after SARS outbreak and the later's was higher them the former's(P

BackgroundPosterior capsule opacification(PCO) is the main cause inducing low vision after extacapsular cataract extraction. Our previous study determined that polylysine-ethylene diamine tetraacetic acid (EDTA) (PLE) can suppress the incidence of PCO. ObjectiveThe goal of this experiment was to investigate the inhibition of polylysine-EDTA on rabbit lens epithelial cells (LECs)proliferation in vitro and the effective concentrations of polylysine-EDTA. MethodsThe anterior capsular membranes from 10 3-month-old clean New Zealand white rabbits were digested and then cultured to obtain the LECs. The second and third generation of LECs were inoculated on the 96-hole culture plate with the cell density of the 1 × 105/ml. 12.5,25.0,50. 0,100. 0 μmol/Lof PLE were added into the culture medium for 48 hours respectively,and the DMSO medium was used at the same way as the control group. The proliferation of the LECs was then detected by MTT method and the inhibitory rate of PLE on LECs growth was calculated. ResultsLECs grew at a near normal state in ≤25.0 μmol/L PLE groups,however,cultured LECs were out of shape and the numbers decreased with the weakened adhesion ability in ≥50.0 μ mol/L PLE groups. The A490 values of LECs were 0. 278±0. 013,0. 266±0. 028,0. 260±0. 022 and 0. 247±0. 012 in 12. 5,25.0,50. 0, 100. 0 μmol/L polylysine-EDTA groups respectively and were lower than 0. 311 ±0. 038 of DMSO control group( P=0. 035,0. 011,0. 009,0.013 ). The inhibitory rates of 12. 5,25.0,50. 0, 100.0 μmoL/L PLE on LECs proliferation were 10.61％ , 14.47％ , 16.40％ and 20. 58％ respectively. ConclusionsPolylysine-EDTA can inhibit the growth and proliferation of LECs in vitro at a dose-dependent manner.

OBJECTIVETo study the effects of acute cold exposure on the inflammation and pathologic injuries in pulmonary of rats, and explore the mechanism induced by cold stress.

METHODSForty male Wistar rats were randomly divided into five groups(n = 8): control group (23 ± 2) °C 2.5 h, -25°C 0.5 h group, -25°C 1 h group, -25°C 2 h group and -25°C 2.5 h group. Rats were exposed to cold at -25°C and no wind by keeping them in a low temperature chamber except control group. Rectal temperatures of the rats were measured before and after cold exposure. The morphological changes of pulmonary were observed by the optics microscope. The levels of tumer necrosis factor-α(TNF- α), interleukin-6 (IL-6) and interleukin-β (IL-1β) in lung tissue homogenate were measured by ELISA.

RESULTSCompared to the control group, body core temperatures of the -25°C 1 h group, -25°C2 h group and -25°C 2.5 h group were decreased significantly, and the D-values of rectal temperature were increased before and after cold exposure (P < 0.05). The infiltration of inflammatory cells and alveolar edema fluid appeared in the lung tissue of the -25°C 2.5 h group. The concentrations of tumor necrosis factor-α (TNF α), interleukin-6 (IL-6) and inter- leukin-1β (IL-1β) in lung tissue homogenate were increased significantly in -25°C l h group, -25°C 2 h group and -25C° 2.5 h group (P < 0. 05).

CONCLUSIONThe infiltration of inflammatory cells and the increase in proinflammatory cytokine from pulmonary may lead to the lung tissue injury after acute cold exposure.

Animals ; Cold Temperature ; adverse effects ; Inflammation ; physiopathology ; Interleukin-1beta ; metabolism ; Interleukin-6 ; metabolism ; Lung ; metabolism ; physiopathology ; Male ; Rats ; Rats, Wistar ; Tumor Necrosis Factor-alpha ; metabolism

S-adenosylmethionine-dependent uroporphyrinogen III methyltransferase (SUMT) is a novel red fluorescence indicator. However, the production of SUMT in Escherichia coli is restricted by its relatively low solubility, and little is known about the red fluorescent materials that are associate with SUMT. Two individual SUMT mutations, L166A and L88R/L89G double mutant were produced by site-directed mutagenesis. Both mutants were overexpressed in E. coli and purified by Ni-NTA chromatography. The reddish mixtures isolated from the purified L88R/L89G double mutant were analyzed by UV-visible spectra scanning and mass analysis(MS). The L88R/L89G double mutant has enzymatic activity in vivo, whereas L166A mutant loses the activity. Trimethylpyrrocorphin is identified as the main constituent in the isolated pigments. The purified L88R/L89G mutant increases protein solubility, which is applied potentially as the fluorescent indicator denoting the solubility of protein fusion partner.
Amino Acid Substitution ; Electrophoresis, Polyacrylamide Gel ; Escherichia coli ; genetics ; Fluorescence ; Mass Spectrometry ; Methyltransferases ; chemistry ; genetics ; metabolism ; Molecular Weight ; Mutagenesis, Site-Directed ; methods ; Mutation ; Pigments, Biological ; chemistry ; metabolism ; Plant Proteins ; chemistry ; genetics ; metabolism ; Recombinant Proteins ; chemistry ; metabolism ; Solubility ; Spectrophotometry, Ultraviolet ; Zea mays ; enzymology ; genetics

Objective To explore the effects of tongue surgery such as ablation of the tongue,tongue　traction,hyoid suspension on the patients with sleep apnea syndrome and its key nursing.Methods Totals of　forty-one patients with sleep apnea syndrome received uvulopalatopharyngoplasty surgery ( UPPP ) and hard　palate surgery were received preoperative psychological nursing and prepared preoperative preparation.Enhanced　the observation after surgery,and payed more attention to functional training and post-operative health guidance.and the complications,blood pressure and therapy effects were observed.Results Forty-one patients had well　recover.Three months later,18 patients' respiratory disturbance index was ( 18.4 ± 17.3 ) significantly lower　than(56.2 ± 19.3),and oxygen saturation was ( 81.9 ± 7.01 ) ％ significantly higher than (71.9 ± 12.1)％ ( P＜0.01 ).Conclusions The surgical treatment of tongue hypertrophy of the tongue and the tongue caused by　tongue fall zone blocking is effective for patients with OSAHS,and perioperative nursing and postoperative　functional training is very important for successful operation.

ABSTRACT Clinical application of standards for reporting interventions in clinical trials of acupuncture (STRICTA) is introduced in this article, and improving opinions are proposed as well. STRICTA has already been extensively applied in designation of acupuncture clinical trials, composition of articles and quality assessment of acupuncture literature. According to the present version of STRICTA, it is suggested that items such as "standards and methods on acupoint selection and location", "angle and direction of needle insertion" and "whether the subjects ever have been acupunctured" should be further perfected. Individuated treat protocols which is highlighted on treatment according to differentiation of syndromes according to different opportunities and stages of diseases should be promoted so as to give better expression to the characteristics of Chinese medicine and enhance the clinical value of the relative literature.
Acupuncture Points ; Acupuncture Therapy ; methods ; standards ; Clinical Trials as Topic ; methods ; standards ; Humans ; Quality Improvement

AIM To observe the effects of Taxilli Herba from six different hosts (Morus alba L.,Salix babylonica L.,Camellia oleifera Abel.,Castanea mollissima B1.,Liquidambar formosana Hance and Nerium indicum Mill.) on lowering blood pressure of spontaneously hypertensive rats (SHR).METHODS SHR were randomly divided into 14 groups,captopril positive group (20 mg/kg),model group,and Taxilli Herba groups of 6 different hosts,and each Taxilli Herba group was further divided into high-dose group (5.9 g/kg) and low-dose group (1.48 g/kg);WKY,in addition,was the blank control.And the 20-day consective correspondence medication was applied to the groups,each with eight rats.The caudal arterial systolic blood pressure (SBP) was measured by tail-cuff method before the administration,and on the 10th day and 20th day of the administration.Anaesthesia was performed at the blood collection 12 h after the last administration;and thus final serum contents of nitric oxide (NO) and changes of superoxide dismutase (SOD) activity,plasmatic contents of angiotensin Ⅱ (Ang Ⅱ) and endothelin-1 (ET-1) were determined.RESULTS From the data before and after administration,an SBP drop among all SHR groups was observed on the 10th day of administration,among which the blood pressure lowering effect by high-dose Taxilli Herba from Morus alba L.was very obvious (P ＜ 0.01);remarkable SBP decrease on the 20th day of administration induced by Taxilli Herba from Salix babylonica L,Liquidambarformosana Hance and Camellia oleifera Abel,and high-dose Taxilli Herba from Morus alba L,low-dose Taxilli Herba from Castanea mollissima B1 were detected (P ＜ 0.01).No significant SBP variation was available between the model group and Taxilli Herba groups after10-day administration;all the Taxilli Herba groups exhibited obvious effect in lowering SBP except Taxilli Herba from Nerium indicum Mill,low-dose Taxilli Herba from Morus alba L.and high-dose Taxilli Herba from Castanea mollissimaBl.after 20-day administration,compared to the model group (P ＜ 0.05).Highdose Taxilli Herba from Morus alba L.and Salix babylonica L significantly decreased plasmatic Ang Ⅱ and ET-1 contents of SHR groups in comparison with the model group (P ＜0.01).High-dose Taxilli Herba from Morus alba L.,Salix babylonica L.and Liquidambarformosana Hance significantly increased serum NO release and superoxide dismutase (SOD) activity (P ＜ 0.01).CONCLUSION Taxilli Herba from the five different hosts,except Nerium indicum Mill,can lower blood pressure,and there exists an effect difference due to the host variation.

Objective To improve ultrasonic unit configuration of the field medical team.Methods The problems of the ultrasonic unit were analyzed in operating platform setup,personnel and facility allocation,application of interventional ultrasound,cross infection prevention and etc,and some countermeasures were put forward accordingly.Results There were interdependence and interaction among the elements of the ultrasonic unit,and the rational configuration made the requirements satisfied for interventional therapy,massive casualty diagnosis,bed side application and etc.Conclusion Improved configuration enhances the efficacy of the ultrasonic unit of the field medical team.