RESUMO
OBJECTIVE@#To investigate the expression of soluble vascular endothelial growth factor receptor-1 (sFlt-1) and placental growth factor (PLGF) in the fetal growth restriction (FGR) cases and the intervention mechanism of tetramethylpyrazine.@*METHODS@#A total of 60 fetal growth restriction cases that admitted to our hospital were randomly divided into ligustrazine intervention group (group A) and nutritional support group (group B). A total of 50 healthy pregnant women were also enrolled as control group (group C). Expression level of maternal serum sFlt1, PLGF and fetal growth parameters including HC, AC, FL, BPD, EFW as well as placenta PLGF, sFlt-1 mRNA expression were recorded and compared among the three groups. A total of 15 SD rats were selected and were divided into three groups, TMP group, alcohol and tobacco group and blank control group. Three groups of rats were dissected on the twentieth day of gestation.@*RESULTS@#Expression level of sFlt-1 and PLGF in group A was not significantly different from that of group C (P>0.05); but significant difference in SFlt1 and PLGF expression level was observed between group C and group B (P0.05). There was significant difference in PLGF between FGR group with treatment and FGR group without treatment or control group (P<0.01).@*CONCLUSIONS@#PLGF level is decreased and sFlt-1 increased in patients suffered from fetal growth restriction, and FGR rats show increased sFlt-1 and decreased PLGF, thus they can be indicator of the fetal growth restriction. Ligustrazine can effectively improve sFlt-1, PLGF expression level in fetal growth restriction cases, which can be used as treatment for FGR.
Assuntos
Animais , Feminino , Humanos , Gravidez , Ratos , Desenvolvimento Fetal , Retardo do Crescimento Fetal , Tratamento Farmacológico , Metabolismo , Placenta , Metabolismo , Fator de Crescimento Placentário , Proteínas da Gravidez , Sangue , Genética , Metabolismo , Pirazinas , Farmacologia , Usos Terapêuticos , RNA Mensageiro , Sangue , Genética , Metabolismo , Ratos Sprague-Dawley , Receptor 1 de Fatores de Crescimento do Endotélio Vascular , Sangue , Genética , Metabolismo , Vasodilatadores , Farmacologia , Usos TerapêuticosRESUMO
This study is to investigate the effect and mechanism of puerarin on DNA damage of HaCaT cells induced by UVB. Puerarin pre-treated cells were irradiated with UVB at 30 mJ x cm(-2). Twenty four hours after irradiation, DNA damage was detected by comet assay, ceramide was measured by thin layer chromatography and gas chromatography, intracellular free calcium ion was analyzed by flow cytometry, the phosphorylation level of p38 protein was examined by Western blotting method. Levels of DNA damage, ceramide, free calcium ion and p-p38 protein were elevated in UVB model cells. Contrary to the model group, all indicators above were reduced in all groups pre-treated by puerarin. Puerarin restrains the ceramide accumulation to block downstream p38 MAPK pathway and calcium ion rising, therefore reduces DNA damage in HaCaT cells induced by UVB.