Multi-center clinical study of motherwort injection for retained fetal membrane after vaginal delivery / 中国实用妇科与产科杂志

OBJECTIVE: To evaluate the efficacy and safety of motherwort(herba leonuri)injection in the treatment of fetal membrane retention after vaginal delivery.METHODS: The prospective study was designed as a multicenter,open,randomized,controlled research from December 2017 to October 2018.A total of 244 women who achieved fullterm vaginal delivery were enrolled from 7 tertiary hospitals in China.Sixteen people were lost to follow-up(7 in the experimental group and 9 in the control group).All cases were randomly divided into group of motherwort(experimental group)and group of basic treatment(control group).Full Analysis Set(FAS)and Per ProtocolSet(PPS)were used for statistical analysis.The results of main validity indicators were the same.Therefore,only the results of PPS set analysis were reported in detail.PPS set included 109 cases in control group and 114 cases in experimental group.Control group were administered by oxytocin 20 U and cephalosporinⅡintravenous injection daily for3 days after birth;experimental group were administered by motherwort 20 mg intramuscular injection per 12 hours for 5 consecutive days on the basis of basic treatment.Both groups of patients were given oral herb medicine Chan-fu-kang or Chan-fu-an Granules after discharge for 7 consecutive days.The following clinical parameters were collected and analyzed for evaluation of the efficacy and safety of motherwort injection in the treatment of retained fetal membrane after vaginal delivery.The main effectiveness indicators were maternal lochia,uterine volume change,and discharge of retained fetal membrane;the secondary effectiveness indicators were the maternal infection-related factors and infections,the incidence of secondary postpartum hemorrhage,postpartum body temperature changes,and the use of other hemostatic drugs.Safety indicators were laboratory tests(blood routine,electrocardiogram),adverse reactions/events,which were used to evaluate the safety and efficacy of motherwort injection in the treatment of retained fetal membrane after vaginal delivery.RESULTS:(1)Lochia:the duration of bloody lochia was significantly shorter in the experiment group than in the control group([(5.12±1.83)d]vs.(6.27±2.07)d,P=0.000);rate of termination of bloody lochia within 5 days was significantly higher in the experiment group than in the control group(64.91% vs. 35.78%,P=0.000).(2)Comparison of uterine volume:the reduction of uterus volume in the experiment group was significantly greater than that in the control group(Z=-2.27,P8.0 mg/L or PCT>0.5 ng/L was defined as infection,the infection rate of the experiment group after 5 days of treatment was significantly lower than that of the control group(P0.05).No other hemostatic drugs were used in the two groups,and no secondary postpartum hemorrhage occurred.(6)There were no adverse reactions reported in both groups,and no abnormal blood routine indicators or electrocardiogram appeared.CONCLUSION: The application of motherwort injection combined with the basic treatment after the vaginal delivery can significantly shorten the duration of bloody lochia,promote uterine involution,increase the discharge rate of retained fetal membrane,and reduce the rate of uterine curettage.

Expression of corticotropin-releasing hormone receptor type-1 in intrahepatic cholestatic placental tissue / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To explore the expression level of corticotropin-releasing hormone receptor type-1 (CRHR-1) in intrahepatic cholestatic placental (ICP) tissue.</p><p><b>METHODS</b>Human placental samples were collected from 10 ICP patients and 10 healthy controls after parturition at 37-40 weeks of gestation. CRHR-1 protein and mRNA expression was assessed by western blotting and nested-real-time fluorescence quantitative PCR, respectively. Normally distributed data were summarized as mean +/- standard deviation, and intergroup comparisons were made by two-tailed Student's t-test. Non-normally distributed data were presented as median with interquartile range, and intergroup comparisons were made by Wilcoxon test. For all statistical analyses, a two-tailed P-value of less than 0.05 was considered statistically significant.</p><p><b>RESULTS</b>The CRHR-1 fluorescence intensity was lower in ICP tissues (1.55 +/- 0.28) than in placental tissues from healthy controls (1.60 +/- 0.37), but the difference did not reach statistical significance (t = 0.349, P = 0.732). The CRHR-1 mRNA content was slightly higher in the ICP tissues [0.139(0.268)] than in the placental tissues from healthy controls [0.031(0.245)], but the difference did not reach statistical significance (t = 1.504, P = 0.136).</p><p><b>CONCLUSION</b>CRHR-1 expression is decreased in ICP tissues, which may lead to a smaller volume of placental lobular villi vessels and restrict the CRH positive feedback loop, ultimately promoting acute hypoxic stress and possible harm to the fetus.</p>

Recombination and expression of ORF1 and ORF2 gene of porcine circovirus type 2 and gene of pseudorabies virus / 生物工程学报

ORF1 and ORF2 gene of porcine circovirus type 2 were cloned by PCR with the specific primers designed according to genome of PCV2 (AY035820). Following extraction and digestion, PCR products were subsequently inserted into universal transfer vector plECMV (deleted partial gE and gI of pseudorabies virus) to generate recombinant transfer plasmid pIEORF1-ORF2. The genomic DNA of PRV TK-/gE- /LacZ+ strain and pIEORF1-ORF2 were co-transfected into IBRS-2 cells with lipofectin, and recombinant virus TK- /gE- /gI- /ORF1-ORF2+ was selected by PCR with ORF1 gene and ORF2 gene primers respectively. The recombinant virus was analyzed with Southern blotting and Western blotting. The results indicated that ORF1 and ORF2 gene of PCV2 had been inserted into the genome of TK- /gE- /LacZ+ strain and the expressed ORF1-ORF2 fusion protein could react with PCV2 positive sera. Result of virus titers detection showed the insertion of ORF1 and ORF2 gene did not influence propagation of recombinant virus.

Construction and characterization of a pseudorabies virus TK-/gG- mutant / 生物工程学报

To construct a TK-/gG- mutant of pseudorabies virus, the gG-detected transfer vector pUSKKBB and genomic DNA of pseudorabies virus TK-/gG-/LacZ+ were co-transfected into IBRS-2 cells. Transfection progeny were plated onto PK-15 cells and incubated for 2 days under methylcellulose. Then the overlay was removed and replaced by 1% low melting point agarose in DMEM supplemented with 150 microg/mL X-gal. After 2 days, white plaques were screened for and purified 4 times. By PCR amplification of gG-deleted gene and LacZ gene, a recombinant virus with TK-/gG- phenotype was confirmed. Sequence of the PCR product revealed that there were 1,176 bp detection in gG gene of the PRV TK-/gG- mutant. Amplifying the gG-deleted gene of different generations of the TK-/gG- mutant showed that the mutant was stable within PK-15 cells. TCID50 assay indicated that the recombinant virus grows well on PK-15 cells. The mice immunized with the TK-/gG- virus showed no sign of abnormality. As a control, all mice inoculated with PRV strain died from the infection. All mice that received TK-/gG- survived after a lethal PRV challenge. However none of the mice injected with phosphate-buffer saline (PBS) survived from the challenge. The above results demonstrated that the recombinant virus could be a candidate marker vaccine strain for eradicating pseudorabies in pig herds.