FETAL VELOCIMETRY AND AMINO ACID TRANSPORT IN PREGNANCY
妊娠期的胎速测定和氨基酸转运
基本信息
- 批准号:2889331
- 负责人:
- 金额:$ 14.85万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:1997
- 资助国家:美国
- 起止时间:1997-09-20 至 2001-08-31
- 项目状态:已结题
- 来源:
- 关键词:acid base balance aminoacid analyzer aminoacid metabolism aminoacid transport blood chemistry blood glucose clinical research gas chromatography mass spectrometry high performance liquid chromatography human pregnant subject placental transfer pregnancy pregnancy circulation disorder prenatal growth disorder respiratory oxygenation stable isotope diagnosis statistics /biometry ultrasound blood flow measurement umbilical cord
项目摘要
The specific aims of this project involve clinical studies in normal
pregnancies and pregnancies complicated by fetal growth restriction.
The studies cover two aspects: 1) improvements in the classification of
clinical severity using new fetal surveillance techniques and 2) studies
of amino acid transport and metabolism using stable isotope methodology.
The role of direct measurements of umbilical venous blood flow compared
to arterial velocimetry measurements and fetal blood chemistry is
examined around the framework of the classification of clinical severity.
Similarly, the additional information acquired from single fetal organ
velocimetry studies of the ductus venosus, fetal hepatic veins, fetal
femoral artery, fetal middle cerebral artery are also compared to fetal
umbilical arterial velocimetry and fetal chemistries. The studies of in
vivo amino acid placental transport and metabolism is a follow up on our
observations that fetal amino acid concentrations are significantly
reduced in fetal growth restricted pregnancies. A non steady state
study utilizing stable isoptomers of essential and non essential amino
acids in pregnant women scheduled for cordocentesis examines in vivo
transport for different groups of amino acids: a) to define differences in
their relative rates of transport in vivo and b) to test whether amino
acid transport is reduced in FGR pregnancies compared to normal
pregnancies for all amino acids or a specific subset. Steady state stable
isotope methodology is also used to test whether the fetal/maternal
enrichment ratios for stable isoptomers of amino acids infused in the
maternal circulation is lower in FGR pregnancies reflecting decreased
transport and increased protein turnover. The relationship of maternal
concentration to umbilical uptake for normal and FGR pregnancies is also
investigated utilizing data on umbilical arteriovenous concentration
differences at the time of cesarean section. All metabolic data are
compared to the classification of clinical severity in FGR pregnancies
using criteria we have previously published.
该项目的具体目标涉及正常人的临床研究,
妊娠和妊娠合并胎儿生长受限。
这些研究包括两个方面:1)改进分类,
使用新的胎儿监测技术和2)研究的临床严重程度
氨基酸转运和代谢的稳定同位素方法。
脐静脉血流量直接测量的作用比较
动脉流速测量和胎儿血液化学是
围绕临床严重程度分类的框架进行检查。
同样,从单个胎儿器官获得的额外信息
静脉导管,胎儿肝静脉,胎儿
股动脉、大脑中动脉也与胎儿比较
脐动脉测速和胎儿化学。 研究在
体内氨基酸胎盘运输和代谢是一个后续我们的
观察到胎儿氨基酸浓度显著
减少胎儿生长受限的妊娠。 非稳态
利用必需和非必需氨基的稳定异构体的研究
脐带穿刺术孕妇体内酸检测
不同氨基酸组的转运:a)确定
它们在体内的相对转运率和B)测试氨基是否
与正常妊娠相比,FGR妊娠的酸转运减少
怀孕的所有氨基酸或特定子集。 稳态稳定
同位素方法也用于测试胎儿/母体是否
注入的氨基酸的稳定同分异构体的富集比
FGR妊娠中的母体循环较低,反映了
运输和增加蛋白质周转。 母性关系
对于正常和FGR妊娠,
利用脐动静脉浓度数据进行研究
剖宫产时的差异。 所有的代谢数据
与FGR妊娠的临床严重程度分类相比,
使用我们之前发布的标准。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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FREDERICK C BATTAGLIA其他文献
FREDERICK C BATTAGLIA的其他文献
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{{ truncateString('FREDERICK C BATTAGLIA', 18)}}的其他基金
DETERMINATION OF RATES OF IN-VIVO PLACENTAL TRANSPORT OF 9 ESSENTIAL AMINO ACIDS
9 种必需氨基酸体内胎盘转运速率的测定
- 批准号:
7605064 - 财政年份:2007
- 资助金额:
$ 14.85万 - 项目类别:
CHANGES IN PLASMA CONCENTRATIONS OF SUGARS AND SUGAR ALCOHOLS AFTER MILK FEEDING
喂奶后血浆中糖和糖醇浓度的变化
- 批准号:
7605134 - 财政年份:2007
- 资助金额:
$ 14.85万 - 项目类别:
DETERMINATION OF RATES OF IN-VIVO PLACENTAL TRANSPORT OF 9 ESSENTIAL AMINO ACIDS
9 种必需氨基酸体内胎盘转运速率的测定
- 批准号:
7374335 - 财政年份:2006
- 资助金额:
$ 14.85万 - 项目类别:
DETERMINATION OF RATES OF IN-VIVO PLACENTAL TRANSPORT OF 9 ESSENTIAL AMINO ACIDS
9 种必需氨基酸体内胎盘转运速率的测定
- 批准号:
7202391 - 财政年份:2005
- 资助金额:
$ 14.85万 - 项目类别:
Rates of In-Vivo Placental Trans. of 9 Ess. Amino Acids
体内胎盘转运率。
- 批准号:
7041012 - 财政年份:2004
- 资助金额:
$ 14.85万 - 项目类别:
FETAL VELOCIMETRY AND AMINO ACID TRANSPORT IN PREGNANCY
妊娠期的胎速测定和氨基酸转运
- 批准号:
2674041 - 财政年份:1997
- 资助金额:
$ 14.85万 - 项目类别:
FETAL VELOCIMETRY AND AMINO ACID TRANSPORT IN PREGNANCY
妊娠期的胎速测定和氨基酸转运
- 批准号:
6182652 - 财政年份:1997
- 资助金额:
$ 14.85万 - 项目类别: