本文于发表在2011年的《American Journal of Hypertension》杂志上。研究人员的目的是检验在妊娠期并发高血压中,G-蛋白偶联性受体激酶2(GRK2)水平与胎盘脉管系统状态的关联,并展望未来GRK2在产前诊断和创新治疗中的应用前景。GRK2是...本文于发表在2011年的《American Journal of Hypertension》杂志上。研究人员的目的是检验在妊娠期并发高血压中,G-蛋白偶联性受体激酶2(GRK2)水平与胎盘脉管系统状态的关联,并展望未来GRK2在产前诊断和创新治疗中的应用前景。GRK2是一个重要的细胞功能调控器。GRK2水平的提高,是异常心血管状态的一个标志,比如高血压,但还未在胎盘血管系统中报道过。本文研究人员选取21个患有先兆子痫或者妊娠期高血压女性分娩时的脐动脉(UA)作为样本(高血压组)。展开更多
Objective: To determine if exposure to more than one course of antenatal gluco cortlcoids is associated with changes in infant blood pressure and myocardial wa ll thickness in the first month after birth. Design: Pros...Objective: To determine if exposure to more than one course of antenatal gluco cortlcoids is associated with changes in infant blood pressure and myocardial wa ll thickness in the first month after birth. Design: Prospective cohort study. S etting: Tertiary neonatal intensive care unit. Participants: Mothers who were el igible for but declined to enter a randomised trial of repeated doses of antenat al glucocorticoids (ACTORDS)-that is, who had a singleton, twin, or triplet pre gnancy at < 32 weeks gestation, had received an initial course of glucocorticoid s seven or more days previously, and were considered to be at continued risk of preterm birth. Main outcome measures: Blood pressure daily for the first week th en weekly until 4 weeks of age. End diastolic interventricular septal and left v entricular posterior wall (EDIVS and EDLVPW) thickness at 48-72 hours after bir th. Results: Thirty seven women were enrolled and delivered 50 infants. Thirty m others (39 infants) were exposed to one course of glucocorticoids, and seven mot hers (11 infants) to more than one course. Blood pressures were higher in the fi rst week after birth in infants exposed to multiple courses of glucocorticoids, and in infants with a latency between last exposure and delivery of less than se ven days. Systolic blood pressure on day 1 was > 2SD above published normal rang es in 67%of babies exposed to multiple courses and 24%of babies exposed to a s ingle course of glucocorticoids (p = 0.04). There was no difference between grou ps in thickness of the EDIVS or EDLVPW. However, 44/50 (88%) babies had EDIVS a nd 49/50 (98%) babies had EDLVPW thickness > 2 SD above the expected mean for b irth weight and gestation. EDIVS but not EDLVPW thickness increased with increas ing latency (mean 0.02 mm/day, P=0.03). Conclusion: Future randomised trials sho uld assess the long term effects of exposure to antenatal glucocorticoids, particularly multiple courses, on the cardiovascular status of the infant.展开更多
文摘本文于发表在2011年的《American Journal of Hypertension》杂志上。研究人员的目的是检验在妊娠期并发高血压中,G-蛋白偶联性受体激酶2(GRK2)水平与胎盘脉管系统状态的关联,并展望未来GRK2在产前诊断和创新治疗中的应用前景。GRK2是一个重要的细胞功能调控器。GRK2水平的提高,是异常心血管状态的一个标志,比如高血压,但还未在胎盘血管系统中报道过。本文研究人员选取21个患有先兆子痫或者妊娠期高血压女性分娩时的脐动脉(UA)作为样本(高血压组)。
文摘Objective: To determine if exposure to more than one course of antenatal gluco cortlcoids is associated with changes in infant blood pressure and myocardial wa ll thickness in the first month after birth. Design: Prospective cohort study. S etting: Tertiary neonatal intensive care unit. Participants: Mothers who were el igible for but declined to enter a randomised trial of repeated doses of antenat al glucocorticoids (ACTORDS)-that is, who had a singleton, twin, or triplet pre gnancy at < 32 weeks gestation, had received an initial course of glucocorticoid s seven or more days previously, and were considered to be at continued risk of preterm birth. Main outcome measures: Blood pressure daily for the first week th en weekly until 4 weeks of age. End diastolic interventricular septal and left v entricular posterior wall (EDIVS and EDLVPW) thickness at 48-72 hours after bir th. Results: Thirty seven women were enrolled and delivered 50 infants. Thirty m others (39 infants) were exposed to one course of glucocorticoids, and seven mot hers (11 infants) to more than one course. Blood pressures were higher in the fi rst week after birth in infants exposed to multiple courses of glucocorticoids, and in infants with a latency between last exposure and delivery of less than se ven days. Systolic blood pressure on day 1 was > 2SD above published normal rang es in 67%of babies exposed to multiple courses and 24%of babies exposed to a s ingle course of glucocorticoids (p = 0.04). There was no difference between grou ps in thickness of the EDIVS or EDLVPW. However, 44/50 (88%) babies had EDIVS a nd 49/50 (98%) babies had EDLVPW thickness > 2 SD above the expected mean for b irth weight and gestation. EDIVS but not EDLVPW thickness increased with increas ing latency (mean 0.02 mm/day, P=0.03). Conclusion: Future randomised trials sho uld assess the long term effects of exposure to antenatal glucocorticoids, particularly multiple courses, on the cardiovascular status of the infant.
