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Inflammatory pattern recognition receptors and their ligands: factors contributing to the pathogenesis of
Toshiyuki Sado1, Katsuhiko Naruse, Taketoshi Noguchi
1Department of Obstetrics and Gynecology, Nara Medical University, 840 Shijo-cho, Kashihara, Nara, 634-8522, Japan.
Insights
Preeclampsia pathogenesis involves increased expression of genes related to stress, immunity, and metabolism. Toll-like receptor (TLR) and receptor for advanced glycation end products (RAGE) signaling pathways are implicated, highlighting inflammation
Area of Science:
- Reproductive Biology
- Immunology
- Molecular Biology
Background:
- Preeclampsia is a severe pregnancy complication causing maternal and fetal mortality.
- Limited understanding of preeclampsia pathogenesis hinders effective treatment development.
Purpose of the Study:
- To review molecular signaling pathways involved in preeclampsia pathogenesis.
- To explore potential therapeutic targets based on molecular mechanisms.
Main Methods:
- Literature review of English-language studies.
- Analysis of genome-wide gene expression profiling and proteomic data.
- Focus on pathogenesis and pathophysiological mechanisms.
Main Results:
- Increased expression of genes/proteins in stress response, immune function, inflammation, and metabolism observed in preeclampsia.
- Overlapping pathways identified with Toll-like receptor (TLR) and receptor for advanced glycation end products (RAGE) signaling.
- Placental oxidative stress and chronic inflammation are key contributors.
Conclusions:
- Recent advances in TLR- and RAGE-mediated signaling offer new insights into preeclampsia pathogenesis.
- Understanding these pathways may lead to novel therapeutic strategies.
- Chronic inflammation and oxidative stress are central to disease development.
Problem:
Preeclampsia, a pregnancy-specific hypertensive syndrome, is one of the leading causes of premature births as well as fetal and maternal death. Preeclampsia lacks effective therapies because of the poor understanding of disease pathogenesis. The aim of this paper is to review molecular signaling pathways that could be responsible for the pathogenesis of preeclampsia.
Method Of Study:
This article reviews the English-language literature for pathogenesis and pathophysiological mechanisms of preeclampsia based on genome-wide gene expression profiling and proteomic studies.
Results:
We show that the expression of the genes and proteins involved in response to stress, host-pathogen interactions, immune system, inflammation, lipid metabolism, carbohydrate metabolism, growth and tissue remodeling was increased in preeclampsia. Several significant common pathways observed in preeclampsia overlap the datasets identified in TLR (Toll-like receptor)- and RAGE (receptor for advanced glycation end products)-dependent signaling pathways. Placental oxidative stress and subsequent chronic inflammation are considered to be major contributors to the development of preeclampsia.
Conclusion:
This review summarizes recent advances in TLR- and RAGE-mediated signaling and the target molecules, and provides new insights into the pathogenesis of preeclampsia.
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