目的分析早产儿校正24月龄内生长轨迹,以了解早产儿的生长趋势和规律。方法基于互联网+随访系统建立早产儿随访数据库,纳入2018年4月至2021年4月3188例早产儿,收集其出生及校正1、3、6、12、18、24月龄时的身长、体重、头围数据。按不...目的分析早产儿校正24月龄内生长轨迹,以了解早产儿的生长趋势和规律。方法基于互联网+随访系统建立早产儿随访数据库,纳入2018年4月至2021年4月3188例早产儿,收集其出生及校正1、3、6、12、18、24月龄时的身长、体重、头围数据。按不同的围生期因素分组,绘制生长曲线,并与21世纪国际胎儿和新生儿生长联合会(International Fetal and Newborn Growth Consortium for the 21st Century,INTERGROWTH-21st)标准和世界卫生组织(World Health Organization,WHO)标准进行比较。结果按不同的围生期因素分组的各组早产儿体重、身长、头围曲线均在校正6月龄内快速上升,校正6月龄后增长速度减缓。按实际月龄比较,各出生胎龄组早产儿(<28周、28~31^(+6)周、32~33^(+6)周、34~36^(+6)周)身长曲线在实际9月龄后逐渐与WHO曲线重合(P=0.082),<32周早产儿的体重和头围则一直落后于WHO曲线(P<0.001)。校正月龄后,不同出生胎龄组早产儿(<28周、28~31+6周、32~33+6周、34~36+6周)的体格生长曲线基本重合(P>0.05)。超低出生体重儿和小于胎龄儿的身长、体重、头围曲线均低于INTERGROWTH-21st标准和WHO标准(P<0.05)。结论早产儿在校正6月龄内体格增长速度较快,校正6月龄后增长速度减缓。胎龄越小,体重和头围追赶的时间越长。应重点关注超早产儿、超低出生体重儿和小于胎龄儿的体格生长。展开更多
To explore the dynamic expression and role of Aquaporin5 ( AQP5) in lung development and hyperoxia lung injury, gestation 21-day Sprague-Dawley (SD) rats (term=22 days) were ran- domly assigned to air group and hypero...To explore the dynamic expression and role of Aquaporin5 ( AQP5) in lung development and hyperoxia lung injury, gestation 21-day Sprague-Dawley (SD) rats (term=22 days) were ran- domly assigned to air group and hyperoxia group within 12-24 h after birth. The rats in hypreoxia group were continuously exposed to about 85% oxygen and those in air group to room air. After 1 to 14 days of exposure, total lung RNA was extracted and the expression of AQP5 mRNA was detected by reverse transcription polymerase chain reaction (RT-PCR). Immunohistochemistry and west- ern-blot were used to detect the expression of AQP5 protein. The results showed that the expression of AQP5 in premature rats lung could be detected at various time points after birth, and the positive staining was restricted to the type Ⅰ alveolar epithelial cells. In air group, the AQP5 expression was detected in a very low level at day 1, but exhibited a persistent increase after birth. Compared with the air group, the expression of AQP5 in hyperoxia group was increased at day 1, and had significant difference in mRNA level (P<0.05), but decreased significantly in mRNA and protein levels after 4 to 14 days (P<0.01 or P<0.05 respectively). It was concluded that AQP5 might play a key role in the alveolar period of premature rats by regulating the lung water balance. Hyperoxia exposure leads to a down-regulation of the AQP5 expression, which may be an important factor for the development of hyperoxia lung injury.展开更多
文摘目的分析早产儿校正24月龄内生长轨迹,以了解早产儿的生长趋势和规律。方法基于互联网+随访系统建立早产儿随访数据库,纳入2018年4月至2021年4月3188例早产儿,收集其出生及校正1、3、6、12、18、24月龄时的身长、体重、头围数据。按不同的围生期因素分组,绘制生长曲线,并与21世纪国际胎儿和新生儿生长联合会(International Fetal and Newborn Growth Consortium for the 21st Century,INTERGROWTH-21st)标准和世界卫生组织(World Health Organization,WHO)标准进行比较。结果按不同的围生期因素分组的各组早产儿体重、身长、头围曲线均在校正6月龄内快速上升,校正6月龄后增长速度减缓。按实际月龄比较,各出生胎龄组早产儿(<28周、28~31^(+6)周、32~33^(+6)周、34~36^(+6)周)身长曲线在实际9月龄后逐渐与WHO曲线重合(P=0.082),<32周早产儿的体重和头围则一直落后于WHO曲线(P<0.001)。校正月龄后,不同出生胎龄组早产儿(<28周、28~31+6周、32~33+6周、34~36+6周)的体格生长曲线基本重合(P>0.05)。超低出生体重儿和小于胎龄儿的身长、体重、头围曲线均低于INTERGROWTH-21st标准和WHO标准(P<0.05)。结论早产儿在校正6月龄内体格增长速度较快,校正6月龄后增长速度减缓。胎龄越小,体重和头围追赶的时间越长。应重点关注超早产儿、超低出生体重儿和小于胎龄儿的体格生长。
基金a grant from National Natural Sciences Foundation of China (No. 30471824)
文摘To explore the dynamic expression and role of Aquaporin5 ( AQP5) in lung development and hyperoxia lung injury, gestation 21-day Sprague-Dawley (SD) rats (term=22 days) were ran- domly assigned to air group and hyperoxia group within 12-24 h after birth. The rats in hypreoxia group were continuously exposed to about 85% oxygen and those in air group to room air. After 1 to 14 days of exposure, total lung RNA was extracted and the expression of AQP5 mRNA was detected by reverse transcription polymerase chain reaction (RT-PCR). Immunohistochemistry and west- ern-blot were used to detect the expression of AQP5 protein. The results showed that the expression of AQP5 in premature rats lung could be detected at various time points after birth, and the positive staining was restricted to the type Ⅰ alveolar epithelial cells. In air group, the AQP5 expression was detected in a very low level at day 1, but exhibited a persistent increase after birth. Compared with the air group, the expression of AQP5 in hyperoxia group was increased at day 1, and had significant difference in mRNA level (P<0.05), but decreased significantly in mRNA and protein levels after 4 to 14 days (P<0.01 or P<0.05 respectively). It was concluded that AQP5 might play a key role in the alveolar period of premature rats by regulating the lung water balance. Hyperoxia exposure leads to a down-regulation of the AQP5 expression, which may be an important factor for the development of hyperoxia lung injury.
