Objective To establish a discoloring kinetic analysis method for determination of trace formaldehyde in textiles. Methods Based on the catalysis of formaldehyde on the discoloring reaction of bromophenol blue oxidized by potassium bromated in phosphoric acid medium,the contents of formaldehyde in textiles were determinated by spectrophotometry. The optimum condition and kinetic parammeters of the reaction were studied in detail. Results The optimum required volumes of reagents were 2.0,3.0,1.0 ml for H3PO4,KBrO3 and bromophenol blue respectively.The reaction was optimized at 85 ℃ for10 min.At working wave length of 430 nm,the linear range was 0.05-0.40 ?g/ml,the detection limit was 0.006 9 ?g/ml ,the recovery rate and RSD were 96%-106% and 2.9%-3.2% respectively. Conclusion This method was easy ,rapid and sensitive for the determination of trace formaldehyde in textiles.

Objective To investigate the risks and benefits of interventions promoting placental transfusion (PT) at delivery [delayed cord clamping (DCC) or umbilical cord milking (UCM)] compared with early cord clamping (ECC) on outcomes among very low birth weight infants (VLBWI).Methods A systematic search was conducted of PubMed, EMBASE, ClinicalTrials.gov, China Academic Journal Network Publishing Database and Wanfang Medical Databases (January 1965 to July 2014) for randomized controlled trial (RCT) articles relating to PT strategies (DCC and UCM) in VLBWI.The Cochrane Handbook 5.1.0 was used to evaluate the methodological quality and RevMan 5.3 software from Cochrane Collaboration was used for metaanalysis.The fixed effect or random effect model was adopted according to the result of heterogeneity, Results We identified 14 eligible studies describing a total of 659 neonates with an average birth weight ＜ 1 500 g.There were eight studies for DCC and six studies for UCM.Compared with the control, benefits of greater PT decreased any grade intraventricular hemorrhage (IVH) (nine studies, OR=0.49, 95％CI: 0.32-0.77, P ＜ 0.01), increased the blood pressure at four hours of life (eight studies, MD=4.42, 95％CI: 3.85-4.98, P ＜ 0.01), and also showed higher initial hemoglobin (Hb) level (six studies, MD=3.52, 95％CI: 1.67-5.37, P ＜ 0.01) and lower incidence of sepsis during the hospital stay (five studies, OR=0.46, 95％CI: 0.26-0.83, P=0.01).No differences were observed between the groups about the fllowing indicators (all P ＞ 0.05): 5-minute Apgar scores (MD=0.01,95％CI:-0.21-0.22), admission temperature (MD=0.13, 95％CI:-0.15 to 0.41), peak serum bilirubin levels (MD=0.59, 95％CI:-0.13 to 1.31), initial reported hematocrit (MD=3.48, 95％CI:-0.46 to 7.43), mortality before discharge (OR=0.63, 95％CI:0.31-1.25), Bell's stage 2 or greater necrotizing enterocolitis (OR=0.62 ,95％CI: 0.29-1.33), rates of transfusion due to anemia (OR=0.63, 95％CI: 0.35-1.15) and oxygen therapy at 36 weeks of corrected age (OR=0.79, 95％CI: 0.46-1.34).Conclusions It is suggested that enhanced PT (both DCC and UCM) at birth is safe and provide better neonatal outcomes than ECC for those VLBWI, most notably reduces the overall IVH occurrence and lower the incidence of sepsis.The optimal umbilical cord clamping practice and UCM among VLBWI infants remains uncertain and long-term neurodevelopmental outcomes are warranted.

Objective To investigate the expression of p73 gene and its protein and their relation with clinicopathologic features in nasopharyngeal carcinoma (NPC) tissues.Methods Expression of p73 mRNA and protein in 52 NPC and 25 normal nasopharyngeal tissues was detected by real-time fluorescent quantitative PCR and immunohistochemistry.Results Expression of p73 mRNA and protein was significantly higher in NPC than that in normal nasopharyngeal tissues (mRNA:73.1％ vs 24.0 ％,protein:71.2 ％ vs 36.0 ％),there were significant statistical differences between the two groups (P ＜ 0.05),and their expression was closely related to tumor invasion depth,degree of differentiation and clinical stage (P ＜ 0.05).Expression of p73 gene and protein was not closely related to age and gender (P ＞ 0.05).Conclusion Detection expression of p73 mRNA and its protein can be helpful in the diagnosis and prognostic evaluation in NPC.

Objective To evaluate the clinical efficacy,overall survival and toxicities in the patients with advanced non-small cell lung cancer treated by liposome paclitaxel combined with nedaplatin as first-line treating.Methods 34 cases with advanced NSCLC were treated with liposome paclitaxel 150 mg/m2 on day 1 and nedaplatin 80 mg/m2 on day 1 by intravenous infusion,with 21 days as one cycle.The patients were treated with chemotherapy more than 2 cycles.Efficacy evaluation and adverse events were evaluated every 2 cycles.Results 34 patients were available for evaluation of efficacy and adverse events.The patients recieved 174 cycles of chemotherapy,and the median was 5.3 cycles.The objective response rate of liposome paclitaxel combined with nedaplatin was 32.3 ％,the disease control rate was 67.6 ％,the median overall survival was 9.5 months (95 ％ CI 6.2-10.7),1 years survival rate was 40.6 ％.The main adverse events were hematological and gastrointestinal toxicities.Frequent grade Ⅲ-Ⅳ toxicities included neutropenia (41.7 ％),anemia (17.6 ％),thrombocytopenia (8.8 ％),nausea and vomiting (8.8 ％),diarrhea (5.8 ％).Conclusions The regimen of liposome paclitaxel combined with nedaplatin is against advanced non-small cell lung cancer with high efficacy and acceptable toxicities,and it may be used as a new choice for treatment of advanced non-small cell lung cancer.

Objective To investigate the effects of Free fatty acids (FFAs) on extracellular matrix(ECM) mRNA expression and secretion.Methods Rat glomerular mesangial cells(HBZY-1 cells) were cultured in vitro and stimulated with OA in different concentration.The expression of collagen Ⅳ(Col Ⅳ) and fibronectin (FN) and transforming growth factor-beta1(TGF-?_1) mRNA were measured by semi-quantitative RT-PCR.The levels of Col Ⅳ and FN in cultured supernatant were determined by ELISA.Results The mRNA expression of Col Ⅳ, FN and TGF-?_1 of 25、100、400 ?mol/L stimulated OA groups were 0.94?0.17、1.16?0.15、1.28?0.19 and 0.82?0.11、0.97?0.07、1.09?0.08 and 1.15? 0.07、1.24?0.06、1.36?0.05 respectively , which increased significantly compared with their control group(0.73?0.16、0.53?0.09、 0.96?0.11 P

Objective To study the antitumor effects in vitro and impact on colon cancer in rats of endostatin transfected bifidobacterium oral powder preparation(ETB-2).Methods Growth inhibitory effect of the cecropins on normal human gastric epithelial cell line(GES-1) and human colon adenocarcinoma cell line(LS-174T) was observed using a microculturetetrazolium(MTT) colorimetric methods.Male Wistar rats were divided into 4 groups.All treatments were completed in a course of 18 weeks and the experiment was finished at week 33.Results The cecropins showed selective cytotoxic activity against the human colon adenocarcinoma cell line.There was a significant lower in incidence of colon tumors in rats(70%vs100%,P0.05).Conclusion ETB-2 has significant preventive effect on colon cancer induced by DMH in rats.

Objective: To establish the quality standard for Jiuwei Zhaxun pills. Methods: Fructus Chebulae, Flos Carthami and Herba Dracocephali Heterophylli were identified by TLC. HPLC was used to determine the content of gallic acid in Jiuwei Zhaxun pills. Results: TLC showed clear sports without any interference from the negative control. Gallic acid showed a good linear relationship (r=0. 999 7) within the range of 0. 028 6-0. 572 0 μg. The average recovery was 97. 74% with the RSD of 0. 95% (n=6). Conclusion:The methods are with strong specificity, high sensitivity and good reproducibility, which can be applied in the quality control of Jiuwei Zhaxun pills.

Objective:To explore the impact of treatment duration with human urinary kallidinogenase (HUK) on the efficacy and safety of acute ischemic stroke (AIS).Methods:In this subgroup analysis of RESK study, a total of 990 AIS patients recruited from 65 centers in China between August 2015 and June 2020 were included and divided into short medication group (HUK for 8 days, n=185) or long medication group (HUK for 15 days or 21 days, n=805). The proportions of patients with modified Rankin Scale (mRS) score of 0, 0-1, 0-2 at 90 days, National Institutes of Health Stroke Scale (NIHSS) score change from baseline to 22 days, the proportions of patients with Barthel index (BI)≥95 at 90 days, and the incidences of adverse events were analyzed. Comparisons between groups were conducted using chi-square test, single factor and multivariate Logistic regression analysis, etc. Results:Multivariate regression analysis showed that the proportions of patients with 90-day mRS score of 0-2 [74.1% (137/185) vs 75.0% (604/805); OR=1.047, 95% CI 0.676-1.620, P=0.838] and 22-day NIHSS score change from baseline (4.60±2.00 vs 4.26±2.80; OR=-0.390, 95% CI -1.125-0.344, P=0.297) showed no statistically significant difference between the short medication and long medication groups; the proportions of patients with 90-day mRS score of 0-1 [48.1% (89/185) vs 59.1% (476/805); OR=0.674, 95%CI 0.463-0.983, P=0.041] and 90-day BI≥95 [43.6% (79/181) vs 55.1% (442/802); OR=0.614, 95%CI 0.420-0.897, P=0.012] were significantly lower in the short medication group than in the long medication group. There was no statistically significant difference in the incidences of adverse events between these 2 groups. Conclusions:In AIS patients, consecutive 8-day dosing of HUK improved immediate (22-day NIHSS score) and long-term outcome (90-day mRS score 0-2) and was safely tolerated. When applicable, extended duration of HUK could improve long-term disability-free rate (90-day mRS score 0-1) and quality of life (90-day BI) without increasing the risk of adverse events.

To meet the requirement of pathological practice and development, we systematically analyzed the situation of pathological residents training and the importance of initiating the clinical scientific research training. Additionally, we proposed the principle and implementation strategy for clinical scientific research training. According to features of pathological practice, we employed the modularized teaching to divide the training courses into several modules: discussion module for clinical pathology, lecture module for advanced research, and training modules for basic scientific theory, technology and writing skill. With these approaches, the systematic and structured system of standardized residents training is implemented to improve the clinical research ability of pathological residents.