# Analysis of the Molecular Mechanism of Parturition and the Establishment of a Safe Obstetrical Care System - Secondary Publication

**Authors:** Tadashi Kimura

PMC · DOI: 10.31662/jmaj.2025-0099 · 2025-06-13

## TL;DR

This paper explores the molecular mechanisms of childbirth and proposes strategies to improve maternal safety and obstetric care.

## Contribution

The study introduces a preeclampsia model and web-based postpartum care system to enhance maternal safety.

## Key findings

- Human oxytocin receptor was cloned and its transcriptional regulation during childbirth was analyzed.
- A mouse placenta-specific gene system was used to develop a preeclampsia model and explore therapies.
- Surgical techniques for peripartum hysterectomy and social strategies for obstetric care were improved.

## Abstract

The article presents the research and social implementation efforts undertaken by my colleagues and me at the Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine. We cloned the human oxytocin receptor using molecular biology techniques and investigated its transcriptional regulatory mechanisms in the human uterus during parturition. Additionally, we adapted a mouse placenta-specific gene expression system to develop a preeclampsia model and explored potential therapeutic strategies. Our research also focused on improving surgical techniques for peripartum hysterectomy in cases of critical obstetric hemorrhage and vasa praevia with placenta praevia, which may also lead to sudden fetal death during parturition. Concurrently, based on epidemiological data, we adopted a social approach strengthening obstetric care teams and identifying key issues within Japan’s delivery system. Furthermore, we developed a web-based postpartum care procedure. I hope that research and practices aimed at enhancing maternal safety and well-being will continue to progress further in the future.

## Linked entities

- **Diseases:** preeclampsia (MONDO:0005081), placenta praevia (MONDO:0005918)
- **Species:** Homo sapiens (taxon 9606), Mus musculus (taxon 10090)

## Full-text entities

- **Genes:** OXTR (oxytocin receptor) [NCBI Gene 5021] {aka OT-R, OTR}
- **Diseases:** preeclampsia (MESH:D011225), obstetric hemorrhage (MESH:D048949), sudden fetal death (MESH:D005313)
- **Species:** Mus musculus (house mouse, species) [taxon 10090], Homo sapiens (human, species) [taxon 9606]

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Source: https://tomesphere.com/paper/PMC12329139