Objective: To determine the contents of five flavonoids in Spirodelae Herba from different growing areas, and evaluate its anti-oxidant activity. Methods: Contents of orientin, vitexin, cynaroside, apigenin-7-glucoside, and luteolin in 17 batches of Spirodelae Herba from eight origins were determined by HPLC with acetonitrile and 0.1% formic acid as mobile phase, and DPPH method was used to compare their anti-oxidant activities, together with cluster analysis and principal component analysis, the quality of Spirodelae Herba was evaluated. Results: The contents of five flavonoids in Spirodelae Herba from different growing areas exist certain differences, which can be divided into three different categories by cluster analysis and principal component analysis. The contents of orientin, vitexin, and cynaroside were significantly higher in samples from Shaanxi and Shanxi provinces than those from other origins, as well as their oxidation clearance rates were relatively high. The correlation analysis showed there was a significant positive correlation between the rate of oxidative elimination and flavonoid content. Conclusion: Spirodelae Herba from Shaanxi and Shanxi provinces has higher contents of flavonoids with strong antioxidant capacity. The analytical method is stable and reliable, which can provide the reference for enhancing the quality control of Spirodelae Herba.

Baculoviruses produce two viral phenotypes, the budded virus (BV) and the occlusion-derived virus (ODV). ODVs are released from occlusion bodies in the midgut where they initiate a primary infection. Due to the lack of an in vitro system, the molecular mechanism of ODV infection is still unclear. Here we present data demonstrating that Helicoverpa armigera nucleopolyhedrovirus (HearNPV) ODV infected cultured Hz-AM1 cells in a pH dependent manner. The optimal pH for ODV infection was 8.5, which is same to that in the microvilli of midgut epithelial cells, the ODV native infection sites. Antibodies neutralization analysis indicated that four HearNPV oral infection essential genes p74, pif-1, pif-2 and pif-3 are also essential for HearNPV ODV infection in vitro. Thus, HearNPV-HzAM1 system can be used to analyze the mechanism of ODV entry.

Objective To discuss the effect of QGY/CDDP hepatoma lines multi-drug resistance (MDR) reversed by gene transfection of mdr1,mrp-ASODN+ultrasound contrast agent+ultrasound.Methods The QGY/CDDP cells were transfected by mdr1,mrp ASODN+ultrasound contrast agent+ultrasound irradiation respectively and detected of the various indicators:cell adhesion rate,cell sensitivity to cell drug-resistance,the mRNA expression of mdr1 and mrp gene,the expression of P-gp and MRP protein. Results After mdr1-ASODN transfection,the drug sensitivity and expression of P-gp,MRP protein of QGY/CDDP cells were smaller changes(P＞0.05),and the rate of cells adherent and expression of resistance gene mRNA were obvious changes(P＜0.05).After mrp-ASODN transfection,the cells adherent rate,the drug sensitivity,the expression of resistance gene mRNA and P-gp,MRP protein were obvious changes respectively(P＜0.05),the experiment group(group 2')had bigger effects(P＜0.05).Conclusions mdr1. mrp-ASODN+ultrasound contrast agent+ultrasound irradiation could safely partly reverse MDR of hepatoma cells,which is a potential new approach for gene therapy.

Objective To investigate the analgesic effect of salmon calcitonin(sCT)and its effect on expression of calcitonin receptor(CT-R)in periaqueductal gray(PAG). Methods Rat models of neuropathic pain were prepared by chronic constriction injury(CCI). Thermal withdrawal latency(TWL)and mechanical nociceptive threshold(MNT)were measured using hot plate test and yon Frey monofilaments test. The distribution of CT-R in PAG was detected by immunohistochemical method. CT-R protein was quantitatively determined by western blotting. Fourty male SD rats were randomized into 5 groups: normal group, sham-CCI group, CCI group, CCI plussubcutaneous sCT group, and CCI plus microinjection of sCT into PAG group. Results TWL, MNT, andexpression of CT-R in PAG showed no difference between normal group and sham-CCI group(P＞0. 05). TWL and MNT in CCI group were significantly lower than those in normal group(P＜0.05), and expression of CT-R in CCI group was significantly higher than that in normal group(P＜0.05). TWL, MNT and expression of CT-R in CCI rats increased significantly after sCT therapy(P＜0. 05), and the effect was more marked in PAG injection group than subcutaneous injection group(P＜0.05). Conclusions sCT raises the pain threshold and increase the expression of CT-R in PAG of CCI rats, while PAG injection showed more marked effect than subcutaneous injection.

Objective To study the effect of endoscopic treatment for acute appendicitis (AA)without perforation or gangrene.Methods A total of 94 patients with AA were randomly divided into operation group (n =45 ) to receive appendectomy,control group (n =15 ) to accept conventional medicine of metronidazole and Cefoxitin and colonoscopy group (n =34) to undergo conventional medicine plus endoscopic treatment.The time for alleviation of abdominal pain,duration and mean cost of the hospitalization,and the recurrence rate in one year were compared.Results Compared to operation group,colonoscopy group was superior in the duration [ (2.77 ± 0.27) d vs.(6.65 ± 1.68) d ] and mean cost of hospitalization [ ( 1011.35 ± 22.12) yuan vs.(4023.37 ± 32.02 ) yuan ] ( P ＜ 0.05 and P ＜ 0.01,respectively).There were no significant differences in the time for alleviation of abdominal pain or the recurrence rate in one year between 2 groups.Colonoscopy group was superior to control group in all the indices (P ＜ 0.05 ).Conclusion Endoscopic treatment for AA without perforation and gangrene is effective and safe,which can be considered as the first-line treatment.

Objective To investigate the clinical significance of soluble intercellular adhesion molecule‐1 and inflammatory factors (CRP ,IL‐17) in elderly patients with colorectal carcinoma .Methods The expression of sICAM‐1 ,CRP and IL‐17 in 76 ca‐ses of elderly patients and 32 cases of youg patients with colorectal cancer were detected by enzyme linked immunosorbent assay be‐fore and after surgery ,and to analyze its clinical significance correlated with pathological parameters .Meanwhile ,60 cases of healthy were controls .Results The serum levels of IL‐17 and sICAM‐1 were higher in patients with different ages of colorectal cancer than those of the normal control group (P<0 .05) ,and the concentrations of the two group after operation were significantly lower than those of the normal control group (P<0 .05) .The CRP levels of the young group and old group were similar to that of the normal control group (P>0 .05) .The level of CRP before operation in the young group was higher than that in the normal control group (P<0 .05) .The levels of serum IL‐17 and sICAM‐1 were significantly different between the young and the old group(P<0 .05) , while the CRP level was similar in the two groups (P>0 .05) .The serum levels of sICAM‐1 and IL‐17 in colorectal cancer patients were associated with the degree of differentiation ,depth of invasion ,lymph node metastasis and TNM staging (P<0 .05) .The level of CRP was significantly correlated with the depth of invasion ,lymph node metastasis and TNM staging (P<0 .05) .Conclusion The serum levels of sICAM‐1 ,CRP and IL‐17 reflect the invasion and metastasis of colorectal cancer in a certain extent ,which play important roles in predicting the development and prognosis of colorectal cancer .

Objective To investigate the effect and mechanism of boron neutron capture therapy(BNCT) in C6 glioma cell line.Methods C6 cells in exponential phase were divided into 6 groups: untreated control,(~(60)Co?)(4 Gy),~(60)Co? 8 Gy,nuclear reactor exposure without boronophenylalanine(BPA) 3 Gy,BNCT(4 Gy) and BNCT 8 Gy.Cellular morphological change was observed by an inverted microscope,light microscope,fluorescence microscope and electronic microscope.Flow cytometry was used to determine the percentage of apoptosis,necrosis and normal cells 48h after irradiation.Colony forming assay was used to calculate cell surviving fraction.Results Typical morphological changes of apoptosis were observed early after irradiation in BNCT group,with a significant increase in apoptotic rates was observed 48 h after irradiation with 63.2% and 88.3% for BNCT(4 Gy) and 8 Gy group,respectively(P

Objective To explore the efficacy of postoperative adjuvant transarterial chemoembolization (TACE) on the survival of patients after radical resection for hepatocellular carcinoma (HCC).Methods Between March 2007 and March 2010,229 HCC patients who underwent radical resection were retrospectively studied.Patients who underwent resection alone were used as the control group (138 patients) while those who received post-operative adjuvant TACE was used as the interventional group.In order to balance the covariates between the groups,a matched comparison of the patients was done by selecting patients using the propensity score matching (PSM).Then,the efficacy of adjuvant TACE upon survival was evaluated.Results After PSM,we obtained 67 pairs of patients.The survival time for the interventional and the control groups were 32.1 months and 28.3 months respectively.The survival rates at year 1,2,3 post-resection were 94.0％,84.8％ and 75.3％ in the interventional group versus 83.6％,69.9％ and 61.5％ in the control group respectively.There were no significant differences between the two groups (P =0.062).Univariate analysis showed the serum level of AFP,tumor size,number of tumor,BCLC stage,and adjuvant TACE significantly affected the survival of HCC patients who received radical resection (P ＜0.05).Cox model suggested that AFP≥400 μg/L and tumor diameter ＞ 5 cm were independent risk factors of survival for HCC patients who received radical resection (P ＜ 0.05).Conclusion Postoperative adjuvant TACE had no positive effect on survival,and AFP level ≥ 400 μg/L and tumor size ＞5 cm were independent risk factors of survival of HCC patients who received radical resection.

Objective: The effect of thymosin alpha 1 (Tα1) on patients with hepatocellular carcinoma (HCC) after radical hepatectomy was assessed. Methods: A total of 558 HCC patients treated by radical hepatectomy were retrospectively collected. Patients in the treatment group (n=146) received postoperative Tα1 therapy, whereas patients in the control group (n=412) did not. Propensity scale matching was conducted to improve the balance between the two groups. Changes in liver function, recurrence-free survival rates, and overall survival rates were compared between the two groups. Results: Postoperative liver function (i.e., TBIL, ALB, ALT, and PT) in the treatment group was significantly better than that in the control group (P<0.05). The one-, two-, and three-year recurrence-free survival rates and overall survival rates in the treatment group were significantly higher than those in the control group (P=0.019 and P=0.011, respectively). Conclusion:Postoperative Tα1 therapy can improve postoperative liver function, thus significantly prolonging recurrence-free survival and overall survival.

Objective To explore the clinical signiifcance of combined detection of thyroid stimulating hormone (TSH) and free thyroxin (FT4) in dried blood spots in screening for congenital hypothyroidism (CH) in neonates. Methods The TSH and FT4 levels in dried blood spot were measured by time-resolved lfuorescence immunity in live born neonates from June to December 2013. If the screening was positive, the blood was drawn and the serum TSH and FT4 were measured and compared with the results from dried blood spots. Results In a total of 31 199 neonates screened, 12 cases were diagnosed with CH and the prevalence rate of CH was 1/2 600;4 cases were hyperthyropinemia and no pituitary CH was detected. There was no signiifcant difference between TSH or FT4 levels in dried blood spot and those in serum in neonates diagnosed with CH (P>0.05). Conclusions Combined detection of TSH and FT4 in dried blood spot can be used for neonatal screening of CH. It can be applied for early distinguishing CH from hyperthyropinemia, and also helpful for early diagnosis and treatment of central CH.