目的探讨妊娠晚期新型冠状病毒感染对围产期孕妇妊娠结局的影响。方法回顾性分析2022年11月至2023年1月于常州市妇幼保健院分娩的101例妊娠晚期感染新冠病毒孕妇的相关数据,选取同期分娩的正常孕妇238例为对照组。分析妊娠晚期新冠病毒...目的探讨妊娠晚期新型冠状病毒感染对围产期孕妇妊娠结局的影响。方法回顾性分析2022年11月至2023年1月于常州市妇幼保健院分娩的101例妊娠晚期感染新冠病毒孕妇的相关数据,选取同期分娩的正常孕妇238例为对照组。分析妊娠晚期新冠病毒感染后相关实验室指标的变化及对母婴结局的影响。结果感染组孕妇血清淋巴细胞计数低于对照组[(1.25±0.69)×10^(9)/L vs(1.68±0.51)×10^(9)/L,P<0.01],感染组孕妇促甲状腺激素水平(TSH)明显低于对照组[1.48(0.71,2.46)uIU/mL vs 2.16(1.42,3.14)uIU/mL,P<0.01]。感染组孕妇D-二聚体[0.68(0.47,1.04)mg/L]、C反应蛋白(CRP)[8.00(3.70,12.90)mg/L]、游离甲状腺素水平[(7.37±1.18)pmol/L]分别高于对照组的所对应指标水平[0.62(0.42,0.82)mg/L,4.35(2.40,6.73)mg/L,(8.05±1.25)pmol/L,P<0.05]。感染组妊娠期高血压疾病(包括子痫前期等)和妊娠期亚临床甲状腺机能亢进的发生率明显高于对照组(P<0.05)。结论妊娠晚期感染新型冠状病毒的孕妇在围产期有可能增加血栓形成的风险,还有可能增加妊娠期高血压疾病及亚临床甲状腺功能亢进等并发症风险。展开更多
Plant phenotypic plasticity is a common feature that is crucial for explaining interspecific competition, dynamics and biological evolution of plant communities. In this study, we tested the effects of soil CaCO_3(cal...Plant phenotypic plasticity is a common feature that is crucial for explaining interspecific competition, dynamics and biological evolution of plant communities. In this study, we tested the effects of soil CaCO_3(calcium carbonate) on the phenotypic plasticity of a psammophyte, Artemisia ordosica, an important plant species on sandy lands in arid and semi-arid areas of China, by performing pot experiments under different CaCO_3 contents with a two-factor randomized block design and two orthogonal designs. We analyzed the growth responses(including plant height, root length, shoot-leaf biomass and root biomass) of A. ordosica seedlings to different soil CaCO_3 contents. The results revealed that, with a greater soil CaCO_3 content, A. ordosica seedlings gradually grew more slowly, with their relative growth rates of plant height, root length, shoot-leaf biomass and root biomass all decreasing significantly. Root N/P ratios showed significant negative correlations with the relative growth rates of plant height, shoot-leaf biomass and root length of A. ordosica seedlings; however, the relative growth rate of root length increased significantly with the root P concentration increased, showing a positive correlation. These results demonstrate that soil CaCO_3 reduces the local P availability in soil, which produces a non-adaptive phenotypic plasticity to A. ordosica seedlings. This study should prove useful for planning and promoting the restoration of damaged/degraded vegetation in arid and semi-arid areas of China.展开更多
文摘目的探讨妊娠晚期新型冠状病毒感染对围产期孕妇妊娠结局的影响。方法回顾性分析2022年11月至2023年1月于常州市妇幼保健院分娩的101例妊娠晚期感染新冠病毒孕妇的相关数据,选取同期分娩的正常孕妇238例为对照组。分析妊娠晚期新冠病毒感染后相关实验室指标的变化及对母婴结局的影响。结果感染组孕妇血清淋巴细胞计数低于对照组[(1.25±0.69)×10^(9)/L vs(1.68±0.51)×10^(9)/L,P<0.01],感染组孕妇促甲状腺激素水平(TSH)明显低于对照组[1.48(0.71,2.46)uIU/mL vs 2.16(1.42,3.14)uIU/mL,P<0.01]。感染组孕妇D-二聚体[0.68(0.47,1.04)mg/L]、C反应蛋白(CRP)[8.00(3.70,12.90)mg/L]、游离甲状腺素水平[(7.37±1.18)pmol/L]分别高于对照组的所对应指标水平[0.62(0.42,0.82)mg/L,4.35(2.40,6.73)mg/L,(8.05±1.25)pmol/L,P<0.05]。感染组妊娠期高血压疾病(包括子痫前期等)和妊娠期亚临床甲状腺机能亢进的发生率明显高于对照组(P<0.05)。结论妊娠晚期感染新型冠状病毒的孕妇在围产期有可能增加血栓形成的风险,还有可能增加妊娠期高血压疾病及亚临床甲状腺功能亢进等并发症风险。
基金supported by the National Key Research and Development Program of China (2016YFC0500706)
文摘Plant phenotypic plasticity is a common feature that is crucial for explaining interspecific competition, dynamics and biological evolution of plant communities. In this study, we tested the effects of soil CaCO_3(calcium carbonate) on the phenotypic plasticity of a psammophyte, Artemisia ordosica, an important plant species on sandy lands in arid and semi-arid areas of China, by performing pot experiments under different CaCO_3 contents with a two-factor randomized block design and two orthogonal designs. We analyzed the growth responses(including plant height, root length, shoot-leaf biomass and root biomass) of A. ordosica seedlings to different soil CaCO_3 contents. The results revealed that, with a greater soil CaCO_3 content, A. ordosica seedlings gradually grew more slowly, with their relative growth rates of plant height, root length, shoot-leaf biomass and root biomass all decreasing significantly. Root N/P ratios showed significant negative correlations with the relative growth rates of plant height, shoot-leaf biomass and root length of A. ordosica seedlings; however, the relative growth rate of root length increased significantly with the root P concentration increased, showing a positive correlation. These results demonstrate that soil CaCO_3 reduces the local P availability in soil, which produces a non-adaptive phenotypic plasticity to A. ordosica seedlings. This study should prove useful for planning and promoting the restoration of damaged/degraded vegetation in arid and semi-arid areas of China.
