Previous studies have revealed Twist,a basic helix-loop-helix transcription factor,plays an important role in breast cancer metastasis.To clarify the molecular mechanism of its involvement in cancer metastasis,Twist was silenced by RNAi in highly metastatic 4T1 cells.Then microarray chips were used to investigate the gene-expression pattern of the Twist-knockdown 4T1 cells and the normal 4T1 cells.The results indicated that silencing of Twist significantly suppressesed lung metastasis of 4T1 cells in vivo.Direct comparison of gene-expression profiles showed that 167 genes in Twist-knockdown cells differed dramatically in expression levels from those in control cells.Among the 167 genes,26 well-known tumor-associated genes,including 15 up-regulated and 11 down-regulated genes were found.These genes appear to be regulated by Twist during breast tumorigenesis.The findings provide new insights into the mechanism by which Twist is involved in tumorigenesis.

Objective: To evaluate the eruption of mandible third molar in orthodontic patients with non-extraction or extraction of the lower premolars. Methods: We selected 3 group of the orthodontic patients. One group consisted of 23 subjects (12 males, 11 females, average age 13.5 years) with non-extraction. One group consisted of 23 subjects (12 males, 11 females, average age 13 years) with lower first premolar extraction. One group consisted of 21 subjects (11 males, 10 females, average age 14.07 years) with lower second premolar extraction. The panoramic radiography was taken. The lower third molar angulation and eruption space were measured before and after the orthodontic treatment. The comparison of treatment changes in 3 groups were performed by means of a paired-sample t test using SPSS 17.0 software package. Results: The RS, LS, Rratio and Lratio increased significantly after treatment in patients with lower first premolar extraction(P<0.01). The RM3 and LM3 increased(P<0.05) and RS, LS, Rratio and Lratio increased significantly(P<0.01) after treatment in patients with lower second premolar extraction(P<0.05). Conclusion: The mandibular third molars show improvement in eruption space and inclination in the orthodontic patients with lower premolar extraction.

Objective To explore the clinical value of serum procalcitonin(PCT)and C-reactive protein(CRP)combination detec-tion in early diagnosis of liver cirrhosis complicating spontaneous bacterial peritonitis(SBP).Methods The peripheral blood sam-ples were collected from 30 cases of liver cirrhosis complicating SBP,30 cases of simple ascites liver cirrhosis (non-SBP)and 45 healthy subjects as control group.The serum PCT level was detected by the dry immunofluorescence quantitation method and the serum CRP level was detected by the immunoturbidimetry.The sensitivity and specificity of PCT,CRP and PCT combined with CRP in diagnosing liver cirrhosis complicating SBP were compared and the relationship between PCT levels and prognosis was ana-lyzed.Results Compare with the healthy control group and the non-SBP group,the serum PCT and CRP levels in the SBP group were markedly increased(P <0.05).The sensitivity of PCT,CRP and PCT combined with CRP in diagnosing liver cirrhosis compli-cating SBP was 93.3%,90.0% and 96.6% respectively,and the specificity was 90.0%,75.0% and 95.0% respectively.Conclusion The combination detection of serum PCT and CRP can increase the sensitivity and specificity of the diagnosis and has more clini-cal value in early diagnosing liver cirrhosis complicating SBP.

Objective To explore the significance of the plasma procalcitonin (PCT) level for directing antibiotic therapy in elderly patients with ventilator-associated pneumonia (VAP).Methods The 50 elderly patients with VAP were randomly separated into the regular therapy group and the PCT-directed therapy group. The regular therapy group was given regular antibiotic therapy, while the antibiotic therapy was decided according to the plasma level of PCT in the PCT-directed therapy group. The used time and utilization rate of antibiotics, as well as inflammatory indicators including white blood cells, neutrophils, C-reactive protein (CRP) and clinical pulmonary infection score (CPIS) were compared between the two groups. Results After treatment, there were no significant differences in white blood cells, neutrophils and CRP between the PCT-directed therapy group and regular therapy group [(8.9 ± 3.5 ) × 109/L vs. (9.4 ± 3.7) × 109/L, 0.62 ± 0.04 vs.0.60±0.04, (18.7±8.5) mg/Lvs. (21.6±6.0) mg/L, t=0.47, 1.84 and 1.37, allP＞0.05],but the CPIS was markedly lower in PCT-directed therapy group than in regular therapy group [(4.0± 1.4) scores vs. (4.7± 1.0) scores, t= 2. 18, P＜0.05]. The neutrophils, CRP and CPIS were significantly lower after treatment than before in the both groups. The concentration of PCT was decreased after treatment than before [(0.5 ± 0.9) mg/L vs. (1.7 ± 0.7) mg/L]. Meanwhile, the time using antibiotics was longer in regular treatment group than in PCT-directed therapy group [(8.72±1.32) d vs. (5.17±0.72) d, t=11.96, P＜0.01], the utilization rate of antibiotics was higher (95.2 % vs. 55.2 %, χ2 = 12.41, P＜0.01) in regular treatment group. Conclusions Using PCT levels for directing treatment in elderly patients with VAP can achieve better curative effect and reduce the use of antibiotics.

Objective To investigate the effects of sevoflurane pretreatment on renal ischemia-reperfusion (I/R)-induced apoptosis in kidney in rats. Methods Thirty pathogen-free male SD rats weighing 220-260 g were randomized into 3 groups (n=10 each):group control (group C);group I/R and group sevoflurane(group S). Renal I/R was induced by clamping the left renal pedicle for 45 min in I/R and S groups. In group S inhalation of 2.2% sevoflurane in O2 was started at 30 min before operation and maintained throughout the experiment.Venous blood samples were taken at 3 h of reperfusion for determination of serum BUN and Cr concentrations. The animals were then sacrificed and the left kidneys were removed for microscopic examination, detection of apoptosis(by TUNEL)and determination of heme oxygenase-1(HO-1) mRNA and protein expression (by RT-PCR and Western blot).Results Renal I/R significantly increased serum BUN and Cr concentrations, apoptotic index(percentage of apoptotic cells) and the severity of necrosis of renal proximal convoluted tubules (0=normal,4=necrosis of whole segment of proximal convoluted tubules).Sevoflurane inhalation attenuated the I/R-induced changes mentioned above.HO-1 mRNA and protein expression was up-regulated by I/R and HO-1 mRNA expression was further up-regulated by sevoflurane inhalation.Conclusion Sevoflurane pretreatment can protect kidney against I/R injury by attenuating cell apoptosis.Up-regulation of HO-1 mRNA expression may be involved in the mechanism.

Objective To evaluate the effect of sevoflurane pretreatment on the inflammatory response during renal ischemia-reperfusion (I/R) in rats.Methods Thirty pathogen-free male Sprague-Dawley rats,aged 12-14 weeks,weighing 220-260 g,were randomized into 3 groups (n =10 each) using a random number table:sham operation group (group S),I/R group and sevoflurane pretreatment group (group SP).Renal I/R was induced by clamping the left renal pedicle for 45 min followed by reperfusion in I/R and SP groups.In group S inhalation of 3％ sevoflurane in O2 was started at 30 min before I/R and maintained throughout the experiment.Venous blood samples were taken at 3 h of reperfusion for determination of serum blood urea nitrogen (BUN) and creatinine (Cr) concentrations.The animals were then sacrificed and the left kidneys were removed for microscopic examination and for measurement of the content of tumor necrosis factor-apha (TNF-α),interleukin-6 (IL-6) and intercellular cell adhesion molecule-1 (ICAM-1) in renal tissues (by ELISA).Results Compared with group S,the serum BUN and Cr concentrations,severity of necrosis of renal proximal convoluted tubules (0 =normal,4 =necrosis of whole segment of proximal convoluted tubules),and contents of TNF-α,IL-6 and ICAM-1 were significantly increased in I/R and SP groups (P ＜ 0.05).Compared with group I/R,the serum BUN and Cr concentrations,severity of necrosis of renal proximal convoluted tubules,and contents of TNF-α,IL-6 and ICAM-1 were significantly decreased in SP group (P ＜ 0.05).Conclusion Sevoflurane pretreatment can protect kidney against I/R injury by inhibiting the inflammatory responses in the renal tissues of rats.

Objective To evaluate the predictive value of brain natriuretic peptide (BNP) on mortality in elderly patient with severe sepsis or septic shock. Method Eighty-three elderly patients meeting with criteria of severe sepsis or septic shock by the American College of Chest Physicians and the Society of Critical Care Medicine (ACCP/SCCM) in 2001, admitted in Intensive Care Unit (ICU) of Zhejiang Hospital during May 2004 to June 2007, were enrolled, and patients with chronic renal failure were excluded. The patients were divided into survivor and non - survivor group according to whether they survived within 28 days staying in ICU, the difference of plasma BNP level,serum C-creative protein (CRP) concentration, APACHE II and SOFA scores on admission day and BNP level on the third day between the two groups were compared; thereafter, the relationship between muhiple variables including age, admission day, BNP, CRP, APACHE 11 and SOFA scores, the 3rd day BNP level and 28-day mortality were analyzed by Logistic regression, and meanwhile the independent predictors for ICU moaality among which were determined. Results BNP levels on both admission day and the 3rd day were significantly higher in nomurvivor group than those in survivor group[ ( 1056.38±676.34) pg/ml vs. (611.59±610.02) pg/ml,p =0.002 and (1448.48+891.11) pg/ml vs. (522.41±575.20) pg/ml, P<0.001, respectively]. By Logistic regression analysis, BNP level on the 3rd day and SOFA score on admission day were independent predictors of ICU mortality, The receiver operating characteristic (ROC) curves indicated that values of areas under the curve of the admission day and the 3rd day BNP levels for 28-days mortality were 0.735 (95% CI,0. 621～0. 848, P <0.001) andO.836 (95% CI, 0.746～0,926,P<0.001), respectively. Conclusions Plasma BNP inereaseds in majority of eldedy patients with severe sepsis or septic shock, which may serve as irdex for prognosis in elderly severe septic paients.

A plan of constructing a platform of excavating and protecting characteristic technology of diagnosis and treatment in research-based hospital of TCM was put forward by Shuguang Hospital Affiliated with Shanghai University of Traditional Chinese Medicine and Research Institution of Characteristic Technology of Diagnosis and Treatment Affiliated with Shanghai Academy of Traditional Chinese Medicine. The platform has begun to take shape on the basis of previous theoretical thought and preliminary practice. It has its own management system and working standards and contents with a clear and definite developing direction. Its working contents include excavating and protecting clinical experience of famous and aged practitioner of Chinese medicine, folk proved recipe and technology of diagnosis and treatment of TCM, intangible cultural heritage of TCM. Some problems appeared during the work, such as the evaluation criterion of the folk proved recipe and technology of diagnosis and treatment, the management of clinical proving projects, the issue of intellectual property protection and so on, which must be further solved.

Objective To establish a system using CK activity assessing with follow-up Duchenne muscular dystrophy (DMD) gene testing to newborn screening for DMD.This study provided a pathway to improve the health outcome for individuals with DMD.Methods Tests for CK were performed with Beckman original reagent on a Beckman Coulter AU 5800.Preliminary studies established a population-based range of CK in newborns using 5 892 deidentified anonymous blood samples,which were collected from Shanghai Changning Maternity and Infant Health Hospital between November 2013 and July 2014.Mutation analysis used multiplex PCR-denature high-performance liquid chromatography (PCR-DHPLC) method for screening large duplications and deletions and Sanger DNA sequencing for screening point DMD gene mutation.Results DMD gene mutations (point mutation,exon60,c.9072G ＞ A) were found in 1 of 5 892 newborn subjects,which had CK level ＞ 2 000 U/L large duplications and deletions in DMD gene were not found.Conclusions A system of analysis for newborn screening for DMD has been established.This path for newborn screening fits our health care system and minimizes the false-positive results for predicting DMD gene mutations by use of CK levels in blood

Objective To explore significance of alpha‐fetoprotein isoform L2(AFP‐L2) in the screening of Down syndrome in pregnant women ,so as to provide references for clinical application .Methods A total of 250 healthy pregnant women and 22 preg‐nant women with Down syndrome were enrolled in this study .Serum specimens were collected and AFP‐12 was separated and cap‐tured by using the magnetic bal ,time‐resolved fluorescence immunoassay was used to detect levels of AFP and AFP‐L2 ,and the percentage of AFP‐L2 (AFP‐L2% ) was calculated .Results The serum level of AFP of pregnant women with Down syndrome [(20.2±4.2)ng/mL]was lower than that of healthy pregnant women[(46.7±19.9)ng/mL],and had statistically significant difference(P<0 .05) .Serum AFP‐L2% of pregnant women with Down syndrome was higher than that of healthy pregnant women , and had statistically significant difference(P<0 .05) .Conclusion Detection of AFP level and AFP‐L2% could be an indicator for Dow n syndrome screening .