Objective To study curative efficacy of euthyrox in treatment of hypothyroidism during pregnancy and its effect on levels of TSH , FT3 and FT4.Methods 100 patients of hypothyroidism during pregnancy who received therapy from June 2014 to June 2015 in our hospital were selected as research objects, and divited into control group and observation group,50 cases in each group.The control group was treated with Fugui Dihuang wan, while the observation group was treated with euthyrox on the basis of control group.Then the levels of TSH,FT3 and FT4, pregnancy outcome, neonatal adverse outcome, treatment outcome of two groups after treatment were compared.Results After treatment, the level of TSH in observation group was lower than the control group, the levels of FT3 and FT4 was higher than the control group ( P<0.05 ); Incidence of pregnancy complications in observation group was less than the control group [12.00%(6/50)vs 40.00%(20/40)](P<0.05);Total neonatal adverse outcomes [8.00%(4/50) vs 26.00%(13/50)](P<0.05); The total effective rate of observation group was statistically higher than that in the control group [96.00%(48/50) vs 80.00%(40/50)](P<0.05).Conclusion Euthyrox is well for hypothyroidism during pregnancy, which can improve TSH, FT3 and FT4 levels, relieve clinical symptoms.

Objective To investigate the effects of recombinant trichosanthin(rTCS) on methylation status and expression level of p27 gene in HeLa cells.Methods HeLa cells was treated by different concentration(20 ?g/mL,40 ?g/mL,and 80 ?g/mL) of rTCS for 48 h and then methylation-specific polymerase chain reaction(MSP) was used to detect the promoter methylation status of the p27 gene,real-time PCR was used to detect levels of p27 and DNMT1 mRNA,and Western blotting assay was used to detect expression level of p27 protein before and after treatment with rTCS.Results Low expression level and promoter methylation status of the p27 gene were detected in HeLa cells.Treatment with 40 ?g/mL rTCS totally demethylated p27 promoter.Treatment with 20 ?g/mL,40 ?g/mL or 80 ?g/mL rTCS resulted in a 2.22-,4.00-or 6.03-folds increase in p27 mRNA level,respectively,and also a great increase in p27 protein level.A high DNMT1 expression level was observed in HeLa cells and treatment with 40 ?g/mL rTCS resulted in a 78% decrease at the DNMT1 mRNA expression.Conclusion rTCS could reverse promoter hypermethylation and re-activate the expression of p27 gene by inhibiting DNMT1 expression in HeLa cells,which indicates its potential use in cancer therapy.

Hepatitis C virus (HCV), one of the major pathogens of viral hepatitis, causes significant hazards in humans. Interferon treatment in combination with ribavirin is used as the first line clinical treatment for HCV infection. However, good response to this treatment has only been observed in few patients and repeated recurrence has also been reported frequently. Therefore, new antiviral agents and therapies are in urgent demand. Here, we report a newly constructed Escherichia coli RNase P based M1GS ribozyme that can specifically and efficiently target the core gene of HCV. The guide sequence (GS) of this M1IGS was designed according to the sequence of the core coding region of HCV genome. The GS was then covalently linked to the 3' terminus of M1 RNA, the catalytic subunit of RNase P from Escherichia coli. The specification of this sequence-specific ribozyme, M1GS, was then examined using an in vitro cleavage assay. The cytotoxicity and its activity in inhibition of HCV gene expression and viral proliferation were further studied in vivo. Our results show that the reconstructed M1GS ribozyme displayed obvious catalytic activity in cleaving target mRNAs fragment in vitro. Notable reduction in the expression of HCV core protein and a 1 000-fold reduction in viral growth were also observed in cultured HCV infected Huh7.5.1 cells expressing the functional M1GS ribozyme. This study demonstrated a direct evidence for the antiviral activity of the customized M1GS-HCV/C141 ribozyme, and thus provided a promising new strategy for clinical treatment of HCV infection.
Antiviral Agents ; pharmacology ; Escherichia coli ; genetics ; Genetic Engineering ; Hepacivirus ; genetics ; physiology ; RNA, Catalytic ; genetics ; pharmacology ; RNA, Guide ; genetics ; Ribonuclease P ; genetics ; Viral Core Proteins ; genetics

OBJECTIVE To assess the ultrasonographic features and clinical significance of the complications of the thyroglossal cysts. METHODS We retrospectively reviewed the ultrasonographic findings in 41 cases with complications of the thyroglossal cyst, which was confirmed surgically and pathologically. 43 cases with simple thyroglossal cyst consisted of the control group. The location, size, internal echo, internal septa, wall thickness, posterior acoustic feature, boundary, vascularity, and fistulas of the lesion were analyzed and compared with the control group. RESULTS Most of the inflammatory thyroglossal cyst showed thickening walls, indistinct boundaries, posterior echo enhancement, and peripheral vascularity on ultrasound images. There were significant differences of the thickness of the cyst wall, indistinct boundary, and peripheral vascularity between the two groups. CONCLUSION The characteristic findings of thyroglossal cyst with inflammation are thickened wall, indistinct boundary, and peripheral vascularities. Ultrasonography can be useful tool in determination of the appropriate time of the operation to reduce the recurrence rate.

BACKGROUND:Our previous studies have shown that strontium-doped calcium polyphosphate containing low-dose strontium appears to have a significant effect on angiogenesis-related behaviors of monocultured umbilical vein endothelial cells and osteoblasts.
OBJECTIVE:To investigate the effect of strontium-doped calcium polyphosphate on angiogenesis-related behaviors of umbilical vein endothelial cells and osteoblasts co-cultured, including celladhesion, spreading, proliferation, as wel as the protein secretion of vascular endothelial growth factor and basic fibroblast growth factor from co-culture system in vitro.
METHODS:Human umbilical vein endothelial cells and osteoblastic cells (MG63) were utilized in this study. cells from passage 3 were used for preparation of the cel-scaffold constructs. After placed in 24-wel plate at a ratio of 2:1, human umbilical vein endothelial cells and MG63 cells were seeded onto strontium-doped calcium
polyphosphate, calcium polyphosphate and hydroxyapatite scaffolds and co-cultured for 7 days. The vascular endothelial growth factor and basic fibroblast growth factor protein levels were determined through a double ligand enzyme-linked immunosorbent assay. The colorimetric 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide assay was performed to quantify the effect of scaffolds on cellproliferation.
RESULTS AND CONCLUSION:Compared with those on calcium polyphosphate and hydroxyapatite scaffolds, cells on strontium-doped calcium polyphosphate scaffolds attached and spread better with a significantly improved cellproliferation. More importantly, the vascular endothelial growth factor and basic fibroblast growth factor expressions were significantly higher in the strontium-doped calcium polyphosphate group than the other two groups (P<0.05), indicating strontium-doped calcium polyphosphate can up-regulate levels of vascular endothelial growth factor and basic fibroblast growth factor proteins.

Objective To investigate the wake-promoting effect of vagus nerve stimulation (VNS) on coma rats after traumatic brain in-jury (TBI), and the related mechanism. Methods A total of 168 healthy Sprague-Dawley rats were randomly divided into blank group, TBI group, antagonist group and VNS group, 42 rats in each group. The latter three groups were established TBI model with impact, and the rats in coma at least 30 minutes were included. VNS group accepted VNS, the antagonist group were injected intralateroventricularly Orexin A receptor 1 (OXR1) antagonist SB334867, and TBI group accepted sham VNS. Their behaviors were observed to determine the level of con-sciousness six, twelve and 24 hours after intervention, while the expression ofγ-aminobutyric acid b1 receptor (GABAb1R) in prefrontal cortex was detected with immunohistochemistry and Western blotting. Results There were 42 rats in the blank group, 11 rats in TBI group, 13 rats in the antagonist group, and 28 rats in VNS group awakened finally. The expression of GABAb1R in prefrontal cortex ranged as TBI group, antagonist group, blank group and VNS group from more to less twelve and 24 hours after intervention under Western blotting (F>60.412, P<0.001), and it ranged as TBI group, antagonist group, VNS group and blank group under immunohistochemistry (H=15.121, P=0.002), with no significant difference among time points (H=3.028, P=0.220). Conclusion VNS can promote waking from coma in rats after TBI, which may relate with the decrease of GABAb1R in prefrontal cortex that induced by Orexin A.

Objective To investigate the differential expression profiles of microRNAs in the liver of 60Co γ-ray irradiated mice using microRNA microarray and to explore their main functions by bioinformatic analysis.Methods After SPF C57BL/6J mice expose to 4 Gy-single whole body radiation,total number of peripheral WBC and the fMNPCE were measured at 3 d.The differentially expressed miRNAs in mouse liver were detected with miRNA microarray,miRNA-124 and miR-34a were confirmed by real time RT-PCR assay.Bioinformatic analysis was applied to explore target genes and the main functions of the differential expressed miRNAs.Results Compared with control group,the total number of peripheral WBC decreased( t = 2.87,P ＜ 0.05 ) ,while the fMNPCE in bone marrow increased ( t =-2.91,P ＜0.05) after 4 Gy γ-ray irradiation.miRNA microarray revealed that 17 miRNAs were differentially expressed,in which 9 up-regulated,8 down-regulated.The expression levels of miR-124 and miR-34a were coincident with the result of real time RT-PCR.GO analysis showed that some pathways including adherens junction and cell cycle were suppressed,while some immune-related pathways were activated.Conclusions miR-34a and miR-194 were involved in the regulation of acute radiation damage,some other miRNAs including miR-124、miR-382 and miR-92a* also played important roles in radiation process.

Objective To investigate the changes of serum soluble receptor for advanced glycation end products(sRAGE)in patients with hypertensive disorder in pregnancy,and analyze the relationship between serum sRAGE and hypertensive disorder in pregnancy.Methods Seventy-five patients with hypertensive disorder in pregnancy including 33 gestational hypertension cases and 42 eclampsism cases,55 normal control were selected.Morphologic changes of placenta were analyzed by means of HE staining.ELISA method was used to determine the level of serum sRAGE.Results Placentomes of cytotrophoblastic cells,nodule of syneytiotrophoblast,thickening of basement membrane,fibrinoid necrosis,villus interstitial edema,reduction in vascularity of villus were much more frequently seen in hypertensive disorder in pregnancy.There were also fabric hyperplasy of hehcine artery,narrow lumina,fibrinoid neerosi and inflammatory cell infiltrating in the uterine decidua in hypertensive disorder in pregnancy.The level of serum sRAGE was significantly decreased in patients with hypertensive disorder in pregnancy[(287.6±36.5)ng/L]when compared with normal controls[(312.8±53.7)ng/L](P<0.01).In hypertensive disorder in pregnancy,the level of serum sRAGE in patients accompanied with eclampsism[(281.9±19.7)ng/L]was lower than that in patients accompanied with gestational hypertension[(293.6±20.3)ng/L](P<0.05).Conclusions HE staining of the placenta showed vascular endothelial damage is the pathogenic basis of hypertensive disorder in pregnancy.The level of serum sRAGE is significantly decreased in patients with hypertensive disorder in pregnancy,it may be contributed to the pathogenesis and development of hypertensive disorder in pregnancy.The level of serum sRAGE may be helpful in predicting hypertensive disorder in pregnancy.

Objective To construct a prokaryotic expression vector pET-22b+with Middle East respiratory syndrome ( MERS) coronavirus nuclocapsid protein( NP) gene and to express and purify N protein.Methods N gene amplified by PCR was inserted into the prokaryotic expression vector pET-22b+.Recombinant plasmid was confirmed using DNA elec-trophoresis and sequencing.NP was expressed in E.coli BL21(DE3) by IPTG induced and purified by cation exchange chromatography using the AKTA purification system.Results The NP gene sequence was proved to be correct by sequen-cing and the protein was expressed in both soluble and insoluble forms in E.coli BL21 ( DE3 ) after IPTG induction.The purity and concentration of recombinant protein was improved obviously by cation exchange chromatography and enrich-ment.Conclusion Recombiant NP of high purity and concentration is purified and will facilitate NP functional research.

Broth microdilution method was hired to measure the minimum inhibitory concentrations (MICs) of luteolin against Trueperella pyogenes,Escherichia coli,Salmonella and Streptococcus in order to evaluate the antimicrobial activity of luteolin in vitro.Meanwhile,the bacteria growth curves in medium containing sub-inhibitory concentration of luteolin were measured in this test.The results indicated that Tureperella pyogenes was the most sensitive to luteolin with a MIC of 0.078 g/L than that of these strains;and Salmonella was also sensitive to luteolin (MIC:1.25 g/L).However,The inhibitory effect of luteolin on Escherichia coli and Streptococcus is relatively weak,and shared the same MIC with 2.5 g/L.Luteolin showed inhibitory effects on the growth curves of all the strains in this test at sub-inhibitory concentration,and the inhibitory effects on the growth curves increased with the concentration of luteolin(P＜0.05).