Objective To observe the effects of phloroglucinol and diazepam on the progression of labor.Methods Two hundred normal primipara without indication of cesarean were randomly divided into intervention group and control group.When the cervix dilated 3 cm,the intervention group was given 80 mg phioroglueinol by injection of the cervix and 10 mg diazepam by injection of muscle,the control group was not given any drug.The length of labor stage,the different ways of labor,scores of neonate,volume of bleeding during 2 hours after labor of the two groups were observed.Results The pain degree of Ⅰ,Ⅱ,Ⅲ grade was 82,16,2 cases in intervention group,but 30,58,12 cases in control group,there was significant difference between the two groups(P＜0.01).The length of total labor stage and the first labor stage in intervention group were significant lower than those in control group(P＜0.05).the rate of spontaneous delivery in intervention group was higher than that in control group(P＜0.05),the others had no significant difference between the two groups(P＞0.05).Conclusions Phloroglueinol and diazepam can decurtate the length of labor stage and lessen pain and have no effects on both mother and newborn.It is worthwhile to spread the drugsin clinical practice.

Objective To develop an anti-caries DNA vaccine-loaded Salmonella typhimurium(St) ghost and enhance the efficacy of immune responses induced by anti-caries DNA vaccine via mucosal route.Methods Both pREP4 and PhiX gene E expression plasmids were transformed into StJ357 and then induced with isopropyl β-D-1-thiogalactopyranoside (IPTG).The bacterial ghosts (BG) were collected after wash and loaded with anti-caries DNA vaccine pGJGLU/VAX.Mice were divided into four groups and immunized through the nasal route with pGJGLU/VAX-loaded BG(Group Ghost + pGJGLU/VAX),pVAX1-loaded BG (Group Ghost + pVAX1),pGJGLU/VAX-Bupivacaine complex (Group pGJGLU/VAX) and pVAX1-Bupivacaine complex (Group pVAX1),respectively.Enzyme-linked immunosorbent assay (ELISA) was used to evaluate the immune responses.Results ELISA results showed that group Ghost + pGJGLU/ VAX had significantly higher level of specific anti-GLU SIgA antibody [(0.367 ± 0.086) A/μg] compared with group Ghost + pVAX1 [(0.122 ± 0.077) A/μg],Group pGJGLU/VAX [(0.068 ± 0.068) A/μg] or Group pVAX1 [(0.089 ±0.089) A/μg] (P =0.028,0.012 or 0.030,respectively).Conclusions St ghost was developed successfully,which enhanced the efficacy of immune responses induced by anti-caries DNA vaccine pGJGLU/VAX via the nasal route.

BACKGROUNDStudies have shown that the drug resistance of gastric cancer cells can be modulated by abnormal expression of microRNAs (miRNAs). We investigated the role of miR-503 in the development of cisplatin resistance in human gastric cancer cell lines.

METHODSMiR-503 expression was measured by quantitative real-time PCR. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide) and clonogenic assays were used to examine changes in cell viability and the drug resistance phenotype of cancer cells associated with upregulation or downregulation of the miRNA. A dual-luciferase activity assay was used to verify target genes of miR-503. Immunohistochemistry, Western blotting analysis, and a flow cytometric apoptosis assay were used to elucidate the mechanism by which miR-503 modulates drug resistance in cancer cells.

RESULTSMiR-503 was significantly downregulated in gastric cancer tissues and several gastric cancer cell lines. Additionally, downregulation of miR-503 in the cisplatin (DDP)-resistant gastric cancer cell line SGC7901/DDP was concurrent with the upregulation of insulin-like growth factor-1 receptor (IGF1R) and B-cell lymphoma 2 (BCL2) expression compared with the parental SGC7901 cell line. An in vitro drug sensitivity assay showed that overexpression of miR-503 sensitized SGC7901/DDP cells to cisplatin. The luciferase activity of reporters driven by IGF1R and BCL2 3'-untranslated regions in SGC7901/DDP cells suggested that IGF1R and BCL2 were both direct target genes of miR-503. Enforced miR-503 expression in SGC7901/DDP cells reduced expression of the target proteins, inhibited proliferation, and sensitized the cells to DDP-induced apoptosis.

CONCLUSIONOur findings suggest that hsa-miR-503 modulates cisplatin resistance of human gastric cancer cells at least in part by targeting IGF1R and BCL2.

Apoptosis ; drug effects ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Cisplatin ; pharmacology ; Humans ; Immunohistochemistry ; MicroRNAs ; genetics ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; genetics ; Real-Time Polymerase Chain Reaction ; Stomach Neoplasms ; genetics