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Published on: June 29, 2013
Changes in placental angiogenesis and their correlation with foetal intrauterine restriction
Insights
Intrauterine growth restriction (IUGR) affects 3-10% of pregnancies. This review examines how placental vascular development changes impact fetal growth, focusing on angiogenesis in IUGR.
Area of Science:
- Obstetrics and Gynecology
- Fetal Medicine
- Reproductive Biology
Background:
- Intrauterine growth restriction (IUGR) affects 3-10% of pregnancies, often defined by fetal weight below the 10th percentile.
- Pathological interference with placental vascular development critically impacts fetal growth.
- Ischemia is a common cause of IUGR, stemming from inadequate capillary loop formation in terminal villi.
Purpose of the Study:
- To review current data on placental angiogenesis changes in Intrauterine growth restriction (IUGR).
- To elucidate the mechanisms of placental vascular supply development under physiological and IUGR conditions.
Main Methods:
- This study is a review of existing literature.
- Focuses on up-to-date data regarding placental angiogenesis and its role in IUGR.
Main Results:
- Pathological changes in placental vascular development, particularly ischemia, are strongly linked to IUGR.
- Insufficient capillary loop formation during villi development is a key factor in IUGR.
- Understanding these mechanisms is crucial for identifying potential interventions.
Conclusions:
- The review summarizes the mechanisms of placental vascularization in both normal and growth-restricted pregnancies.
- Highlights the critical role of angiogenesis in fetal development and the consequences of its disruption in IUGR.
Type Of Study:
Summary review.
Setting:
Department of Gynaecology and Obstetrics, 1st Faculty of Medicine, Charles University and Hospital Na Bulovce, Prague; Department of Physiology, Faculty of Science, Charles University, Prague; Department of Children and Adolescent Medicine, 1st Faculty of Medicine, Charles University in Prague and General Teaching Hospital, Prague.
Introduction:
Intrauterine growth restriction (IUGR) is one of the most common problems in obstetrics. Its incidence is ranging between 3-10%, according to the type of study population and chosen criteria. The cutoff value mainly used for defining the IUGR is weight below the 10th percentile for gestational age. The minority of authors defines the cutoff value under the 5th or 3rd percentile. Any pathological interference with normal vascular development of placenta may have a critical impact on foetal growth and development. Ischaemia is the most common cause of IUGR in normally well-supplied placenta. IUGR is then a consequence of insufficient extension, branching, and dilatation of capillary loops during the formation of terminal villi.
Methods:
This paper is a review focused on up-to-date-known data concerning changes in placental angiogenesis and their impact on IUGR development.
Conclusion:
The aim of this review is to summarize the knowledge concerning the mechanisms of development of the vascular supply to the placenta under physiological conditions and in conditions that result in IUGR.
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