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Pre-eclampsia, the placenta and the maternal systemic inflammatory response--a review
1Nuffield Department of Obstetrics and Gynaecology, John Radcliffe Hospital, Oxford OX3 9DU, UK. christopher.redman@obsgyn.oxford.ac.uk
Placenta
|July 5, 2003
Summary
Pre-eclampsia is an extreme form of a normal pregnancy inflammatory response, driven by placental debris. This maternal systemic inflammatory response (MSIR) has benefits but can be harmful if too severe.
Area of Science:
- Obstetrics and Gynecology
- Immunology
- Pathophysiology
Background:
- Pre-eclampsia pathogenesis is linked to the placenta.
- Maternal systemic inflammatory response (MSIR) is a key factor in pre-eclampsia.
- MSIR is also present in normal pregnancy, but less severe.
Purpose of the Study:
- To review evidence linking MSIR to pre-eclampsia.
- To present a model where placental debris triggers MSIR in all pregnancies.
- To explore the implications for pre-eclampsia diagnosis and management.
Main Methods:
- Review of existing evidence on pre-eclampsia and maternal inflammation.
- Presentation of a theoretical model based on placental debris.
- Analysis of the continuum between normal pregnancy and pre-eclampsia.
Main Results:
- MSIR, triggered by placental debris, explains pre-eclampsia's diverse signs.
- Pre-eclampsia represents an extreme of a normal pregnancy inflammatory continuum.
- The model accounts for variations in placental size and oxidative stress.
Conclusions:
- A clear diagnostic distinction between normal and abnormal pregnancy is unlikely.
- MSIR in pregnancy may offer fetal advantages by causing insulin resistance.
- Managing MSIR is crucial, as excessive levels can be detrimental.
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