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Updated: Sep 24, 2025

Author Spotlight: Modeling an Aspect of Preeclampsia in Female Mice Using Hypoxic Human Placenta-Derived Small Extracellular Vesicles
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Author Spotlight: Modeling an Aspect of Preeclampsia in Female Mice Using Hypoxic Human Placenta-Derived Small Extracellular Vesicles

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Gadd45 in Preeclampsia.

Ossie Geifman-Holtzman1,2,3, Yali Xiong4, Eliezer J Holtzman5

  • 1Department of Ob/Gyn and MFM, Pennsylvania Hospital, University of Pennsylvania, Philadelphia, PA, USA. drgeifman@aol.com.

Advances in Experimental Medicine and Biology
|May 3, 2022
PubMed
Summary
This summary is machine-generated.

Preeclampsia involves multiple pregnancy stresses. The Gadd45a protein acts as a stress sensor, activating signaling pathways that contribute to preeclampsia symptoms and inflammation.

Keywords:
Circulating factorsGADD45Gadd45aHypoxiaInflammatory cytokinesInterleukinsMAPK pathwayPreeclampsiaStressTNF-alphasFlt-1

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Area of Science:

  • Obstetrics and Gynecology
  • Molecular Biology
  • Immunology

Background:

  • Preeclampsia is a complex pregnancy disorder.
  • Contributing factors include hypoxia, immune activation, inflammation, and oxidative stress.
  • Identifying common stress sensors is crucial for preeclampsia prevention and treatment.

Purpose of the Study:

  • To investigate the role of Gadd45a protein as a stress sensor in preeclampsia.
  • To elucidate the signaling pathways activated by Gadd45a in response to various stressors.
  • To understand the link between Gadd45a activation and preeclampsia pathophysiology.

Main Methods:

  • Analysis of Gadd45a protein expression in preeclampsia.
  • Investigation of Gadd45a's interaction with Mkk3-p38 and JNK signaling pathways.
  • Assessment of downstream effects including inflammatory markers and circulating factors like sFlt-1.

Main Results:

  • Gadd45a functions as a stress sensor in preeclampsia.
  • Gadd45a activates Mkk3-p38 and JNK signaling in response to hypoxia, oxidative stress, inflammatory cytokines, and AT1-AAs.
  • This activation leads to immunological/inflammatory changes and increased sFlt-1 production, contributing to preeclampsia symptoms.
  • Inflammatory responses may create a feedback loop sustaining Gadd45a expression.

Conclusions:

  • Gadd45a is a key stress sensor in preeclampsia.
  • Gadd45a-mediated signaling contributes to the development of preeclampsia pathology.
  • Targeting Gadd45a may offer therapeutic strategies for preeclampsia.