目的绒毛外滋养细胞焦亡是否参与子痫前期的发生发展值得探讨。文章旨在构建H 2 O 2诱导滋养细胞焦亡模型,探讨绒毛外滋养细胞焦亡是否参与子痫前期的发生发展,为探究子痫前期发病机制提供新的方向。方法人滋养细胞HTR-8/SVneo培养于164...目的绒毛外滋养细胞焦亡是否参与子痫前期的发生发展值得探讨。文章旨在构建H 2 O 2诱导滋养细胞焦亡模型,探讨绒毛外滋养细胞焦亡是否参与子痫前期的发生发展,为探究子痫前期发病机制提供新的方向。方法人滋养细胞HTR-8/SVneo培养于1640+10%胎牛血清+1%抗生素中,培养12 h后,给予H 2 O 2(100、150、200、250μmol/L)处理细胞(2、4、6、12 h),对照为1640+10%胎牛血清+1%抗生素正常培养细胞。提取细胞总蛋白,Western blot检测焦亡相关分子蛋白水平的表达;RT-qPCR检测细胞中焦亡相关分子mRNA水平;倒置相差显微镜观察细胞形态学改变。结果当H 2 O 2为150μmol/L,处理人滋养细胞4 h时,焦亡相关分子NLRP3、caspase1、Cleaved caspase1、GSDMD及IL-1β的蛋白水平明显高于对照,随着作用时间的延长及浓度的增加,蛋白质表达水平被抑制;当H 2 O 2为150μmol/L,作用2 h时,焦亡经典通路中上游“启动”信号关键分子NLRP3及IL-1β的mRNA水平较对照明显升高(P<0.000);4 h时,焦亡经典通路中的关键分子GSDMD的mRNA水平及下游炎症因子IL-18的mRNA水平明显高于对照组(P<0.05)。通过焦亡相关分子mRNA水平的逆向验证,H 2 O 2诱导滋养细胞焦亡模型最佳条件为150μmol/L和4 h,在该条件下,光镜下可明显看到细胞肿胀、碎裂及质膜气泡形成等细胞焦亡典型改变。结论体外成功建立了氧化应激反应诱导滋养细胞焦亡模型,模拟了氧化应激反应诱导滋养细胞发生焦亡损伤的病生理过程,为后续子痫前期发病机制的研究提供实验基础。展开更多
ZrW2O7(OH,Cl)2·2H2O and its isomorphs were prepared by Acidic Steam Hydrothermal (ASH) method and the pure cubic ZrW2O8 was synthesized by dehydration of ZrW2O7(OH,Cl)2·2H2O. The control factors of ASH metho...ZrW2O7(OH,Cl)2·2H2O and its isomorphs were prepared by Acidic Steam Hydrothermal (ASH) method and the pure cubic ZrW2O8 was synthesized by dehydration of ZrW2O7(OH,Cl)2·2H2O. The control factors of ASH method, such as the type, concentration and volume of the acidic steam source, temperature and time of the reac- tion, were studied in detail. The results showed that HCl was a better volatile acidic steam source and the con- centration of HCl determined the product. At lower concentration of HCl, the main product was Na2W2O7·H2O rather than ZrW2O7(OH,Cl)2·2H2O. When the concentration was higher than 6 mol·L-1, the products in turn be- came sodium tungstates with the structure types of pyrochlore, hexagonal tungsten bronze and finally were trans- formed to ZrW2O7(OH,Cl)·22H2O precursors.展开更多
The new mixed borates with formula(Rb 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O and Cs 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O)were prepared by reaction Rb (Cs )-borate aqueous solution with CaCl 2 .Two kinds of compounds w...The new mixed borates with formula(Rb 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O and Cs 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O)were prepared by reaction Rb (Cs )-borate aqueous solution with CaCl 2 .Two kinds of compounds were characterized by chemical analysis,X-ray powder dif fraction,FT-IR spectra and thermal analysis.展开更多
文摘目的绒毛外滋养细胞焦亡是否参与子痫前期的发生发展值得探讨。文章旨在构建H 2 O 2诱导滋养细胞焦亡模型,探讨绒毛外滋养细胞焦亡是否参与子痫前期的发生发展,为探究子痫前期发病机制提供新的方向。方法人滋养细胞HTR-8/SVneo培养于1640+10%胎牛血清+1%抗生素中,培养12 h后,给予H 2 O 2(100、150、200、250μmol/L)处理细胞(2、4、6、12 h),对照为1640+10%胎牛血清+1%抗生素正常培养细胞。提取细胞总蛋白,Western blot检测焦亡相关分子蛋白水平的表达;RT-qPCR检测细胞中焦亡相关分子mRNA水平;倒置相差显微镜观察细胞形态学改变。结果当H 2 O 2为150μmol/L,处理人滋养细胞4 h时,焦亡相关分子NLRP3、caspase1、Cleaved caspase1、GSDMD及IL-1β的蛋白水平明显高于对照,随着作用时间的延长及浓度的增加,蛋白质表达水平被抑制;当H 2 O 2为150μmol/L,作用2 h时,焦亡经典通路中上游“启动”信号关键分子NLRP3及IL-1β的mRNA水平较对照明显升高(P<0.000);4 h时,焦亡经典通路中的关键分子GSDMD的mRNA水平及下游炎症因子IL-18的mRNA水平明显高于对照组(P<0.05)。通过焦亡相关分子mRNA水平的逆向验证,H 2 O 2诱导滋养细胞焦亡模型最佳条件为150μmol/L和4 h,在该条件下,光镜下可明显看到细胞肿胀、碎裂及质膜气泡形成等细胞焦亡典型改变。结论体外成功建立了氧化应激反应诱导滋养细胞焦亡模型,模拟了氧化应激反应诱导滋养细胞发生焦亡损伤的病生理过程,为后续子痫前期发病机制的研究提供实验基础。
基金Acknowledgements This research was financially supported by the National Natural Science Foundation of China （31371088） the Guangdong Provincial Project of Science and Technology （2011B050200005） SRG2015-00004-FHS and MYRG2016-00052-FHS from University of Macao, and the Science and Technology Development Fund （FDCT） of Macao （FDCT 021/2015/A1 and FDCT016/2016/A1）.
文摘ZrW2O7(OH,Cl)2·2H2O and its isomorphs were prepared by Acidic Steam Hydrothermal (ASH) method and the pure cubic ZrW2O8 was synthesized by dehydration of ZrW2O7(OH,Cl)2·2H2O. The control factors of ASH method, such as the type, concentration and volume of the acidic steam source, temperature and time of the reac- tion, were studied in detail. The results showed that HCl was a better volatile acidic steam source and the con- centration of HCl determined the product. At lower concentration of HCl, the main product was Na2W2O7·H2O rather than ZrW2O7(OH,Cl)2·2H2O. When the concentration was higher than 6 mol·L-1, the products in turn be- came sodium tungstates with the structure types of pyrochlore, hexagonal tungsten bronze and finally were trans- formed to ZrW2O7(OH,Cl)·22H2O precursors.
文摘The new mixed borates with formula(Rb 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O and Cs 2 Ca [B 4 O 5 (OH) 4 ] 2 ·8H 2 O)were prepared by reaction Rb (Cs )-borate aqueous solution with CaCl 2 .Two kinds of compounds were characterized by chemical analysis,X-ray powder dif fraction,FT-IR spectra and thermal analysis.
