Objective:To explore the effect of fibroblast growth factor 2(FGF2)on ferroptosis of renal fibrotic cells and its po-tential molecular mechanisms.Methods:Rat NRK-52E cells were randomly divided into control group,renal fibrosis model group,FGF2 cytokine stimulation group,knockdown empty plasmid group,si-FGF2 group,overexpression empty plasmid group,overexpres-sion FGF2 group,Fer-1 treatment group.The model group was treated with TGF-β1 to obtain a renal fibrosis cell model.Cellular im-munofluorescence method was used to measure the level of cell fibrosis.Western blot was used to detect ferroptosis-related proteins(Nrf2,GPX4 and SLC7A11)and pathway proteins(STAT3,p-STAT3)expression level in the cells.Results:Knockdown of FGF2 could alleviate the increase in α-SMA and Collagen Ⅲ proteins caused by TGF-β1 stimulation of renal tubular cells(P<0.05).FGF2 could promote the activation of STAT3 protein into p-STAT3.The expression level of SLC7A11 protein was significantly increased after FGF2 cytokine stimulation(P<0.05).Compared with the control group,the expressions of Nrf2 and GPX4 in renal fibrotic cells in the si-FGF2 group and Fer-1 treated group were significantly reduced(P<0.05).In addition,knockdown of FGF2 significantly reduced in-terstitial fibrosis of renal tubular epithelial cells(P<0.05).Conclusion:FGF2 may mediate TGF-β1-induced renal ferroptosis through the STAT3/SLC7A11 signaling pathway,and knock down of FGF2 can improve fibrosis of renal tubular epithelial cells.

Objective:To explore the effect of fibroblast growth factor 2(FGF2)on ferroptosis of renal fibrotic cells and its po-tential molecular mechanisms.Methods:Rat NRK-52E cells were randomly divided into control group,renal fibrosis model group,FGF2 cytokine stimulation group,knockdown empty plasmid group,si-FGF2 group,overexpression empty plasmid group,overexpres-sion FGF2 group,Fer-1 treatment group.The model group was treated with TGF-β1 to obtain a renal fibrosis cell model.Cellular im-munofluorescence method was used to measure the level of cell fibrosis.Western blot was used to detect ferroptosis-related proteins(Nrf2,GPX4 and SLC7A11)and pathway proteins(STAT3,p-STAT3)expression level in the cells.Results:Knockdown of FGF2 could alleviate the increase in α-SMA and Collagen Ⅲ proteins caused by TGF-β1 stimulation of renal tubular cells(P<0.05).FGF2 could promote the activation of STAT3 protein into p-STAT3.The expression level of SLC7A11 protein was significantly increased after FGF2 cytokine stimulation(P<0.05).Compared with the control group,the expressions of Nrf2 and GPX4 in renal fibrotic cells in the si-FGF2 group and Fer-1 treated group were significantly reduced(P<0.05).In addition,knockdown of FGF2 significantly reduced in-terstitial fibrosis of renal tubular epithelial cells(P<0.05).Conclusion:FGF2 may mediate TGF-β1-induced renal ferroptosis through the STAT3/SLC7A11 signaling pathway,and knock down of FGF2 can improve fibrosis of renal tubular epithelial cells.

OBJECTIVE To systematically evaluate the effectiveness and s afety of parecoxib sodium for gynecological surgery postoperative analgesia ，and to provide evidence-based reference for clinical drug use. METHODS Retrieved from PubMed ， Embase，the Cochrane Library ，CNKI，VIP，Wanfang data and SinoMed during the inception to Feb. 16th，2021，randomized controlled trials （RCT） about parecoxib sodium （trial group ） versus 0.9％ sodium chloride injection （control group ） for gynecological surgery and postoperative analgesia were collected. After screening literatures ，extracting data and evaluating the quality of literatures with modified Jadad scale ，Meta-analysis，sensitivity analysis and publication bias analysis were performed by using RevMan 5.3 software. RESULTS A total of 14 RCT were included ，involving 1 120 patients. The results of Meta-analysis showed that visual analogue scale （VAS）score at 4 h after operation [MD ＝－1.65，95％CI（－2.48，－0.82），P＝0.000 1]，VAS score at 6 h after operation [MD ＝－1.03，95％CI（－1.60，－0.45），P＝0.000 5]，VAS score at 12 h after operation [MD ＝－0.98， 95％CI（－1.38， －0.59），P＜0.000 01]，the proportion of postoperative analgesia requirements [OR ＝0.14，95％CI（0.04， 0.50），P＝0.003] and the dosage of morphine [MD ＝ －17.75， com 95％CI（－20.93，－14.56），P＜0.000 01] in trial group were significantly lower than control group. There was no statistical significance in the incidence of nausea between 2 groups [OR＝ 0.68，95％CI（0.43，1.08），P＝0.10]. The results of sensitivity analysis showed that the above results were basically stable. The results of publication bias analysis showed that there was little possibility of publication bias in this study. CONCLUSIONS Parecoxib sodium is effective and safe for gynecological surgery and posto perative analgesia.