Objective To investigate the treatment of threatened abortion progesterone maternal serum pro-gesterone -induced blocking factor (PIBF)levels and clinical significance,in order to be able to provide theoretical references of progesterone treatment of threatened abortion.Methods Threatened abortion women (study group)and non -threatened abortion women (control group),50 patients in the observation group given progesterone therapy, enzyme -linked immunosorbent assay (ELISA)was used to detect serum progesterone and PIBF levels of the obser-vation group before treatment and two weeks later,the control group was selected and named after two weeks.Results Observation group after treatment 47 patients progesterone tocolysis successful,success rate was 94.00%,tocolysis bleeding stop time 8.42d,abdominal pain time 11.32d.PIBF of the observation group was (313.52 ±90.43)mmol/L, which was lower than that of the control group (398.47 ±104.25)mmol/L,the difference was statistically significant (t =10.90,P <0.05).The progesterone of the observation group after 2 weeks of treatment was (92.35 ±20.85)mmol/L, which was higher than that before treatment (74.49 ±14.22)mmol/L,compared with progesterone levels of the con-trol group at the same time (83.26 ±20.14)mmol/L and (78.05 ±15.38)mmol/L,the difference was statistically significant (t =7.96,8.11,P <0.05),PIBF after 2 weeks of treatment in the observation group was (510.73 ± 87.49)mmol/L,which was higher than that of the control group at the same time (498.26 ±69.88)mmol/L,the difference was statistically significant (t =4.35,P <0.05).Follow -up observation group miscarriage successful term delivery rate 95.74% of pregnant women,childbirth fetal malformations seen in the control group of pregnant women at term birth rate was 94.00%,no delivery fetal malformation,the difference of full -term delivery rate was not statis-tically significant (P >0.05).Conclusion Reduced PIBF during early pregnancy may be one of the reasons of threatened abortion,the use of progesterone therapy can increase PIBF expression,possibly through this pathway plays a role in tocolysis,so when using progesterone tocolysis monitoring PIBF levels helps evaluate the efficacy of tocolysis.

Various cancers have seriously threatened human' s health. Screening newer and more effective anticancer agents from natural sources to cure these diseases is the focus in research. As novel sources of potential medicine, a number of metabolites isolated from endophytic fungi have been proved to have anticancer bioactivity. Usually, these endophytic fungi have special biochemical pathway and they can accumulate anticancer agents in cultures such as taxane, alkaloids, cytochalasins, podophyllotoxin, brefeldin A and so forth. The research advance on anticancer agents purified from endophytic fungi is expatiated systemically. In addition, the strategy of screening anticancer agents as well as the prospect on this area is introduced briefly.

Psoraleae Fructus (PF) is a well-known traditional herbal medicine in China, and it is widely used for osteoporosis, vitiligo, and other diseases in clinical settings. However, liver injury caused by PF and its preparations has been frequently reported in recent years. Our previous studies have demonstrated that PF could cause idiosyncratic drug-induced liver injury (IDILI), but the mechanism underlying its hepatotoxicity remains unclear. This paper reports that bavachin isolated from PF enhances the specific stimuli-induced activation of the NLRP3 inflammasome and leads to hepatotoxicity. Bavachin boosts the secretion of IL-1β and caspase-1 caused by ATP or nigericin but not those induced by poly(I:C), monosodium urate crystal, or intracellular lipopolysaccharide. Bavachin does not affect AIM2 or NLRC4 inflammasome activation. Mechanistically, bavachin specifically increases the production of nigericin-induced mitochondrial reactive oxygen species among the most important upstream events in the activation of the NLRP3 inflammasome. Bavachin increases the levels of aspartate transaminase and alanine aminotransferase in serum and hepatocyte injury accompanied by the secretion of IL-1β via a mouse model of lipopolysaccharide-mediated susceptibility to IDILI. These results suggest that bavachin specifically enhances the ATP- or nigericin-induced activation of the NLRP3 inflammasome. Bavachin also potentially contributes to PF-induced idiosyncratic hepatotoxicity. Moreover, bavachin and PF should be evaded among patients with diseases linked to the ATP- or nigericin-mediated activation of the NLRP3 inflammasome, which may be a dangerous factor for liver injury.
Adenosine Triphosphate ; Animals ; Chemical and Drug Induced Liver Injury/etiology* ; Flavonoids ; Humans ; Inflammasomes ; Mice ; NLR Family, Pyrin Domain-Containing 3 Protein ; Nigericin