Multiparity and Aging Impact Chondrogenic and Osteogenic Potential at Symphyseal Enthesis: New Insights into Interpubic Joint Remodeling

Pregnancy and childbirth cause adaptations to the birth canal to allow for delivery and fast recovery. To accommodate delivery through the birth canal, the pubic symphysis undergoes changes that lead to the interpubic ligament (IpL) and enthesis formation in primiparous mice. However, successive del...

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Bibliographic Details
Published in:International journal of molecular sciences 2023-02, Vol.24 (5), p.4573
Main Authors: de Sousa, Lizandra Maia, Castelucci, Bianca Gazieri, Suarez, Paula Andrea Saenz, Damas, Ingrid Iara, Mariano, Fernanda Viviane, Joazeiro, Paulo Pinto, Consonni, Sílvio Roberto
Format: Article
Language:English
Subjects:
Adaptation
Age
Aging
Animals
Birth
Bones
Cartilage
Childbirth
Childbirth & labor
Collagen
Cytoplasm
Endoplasmic reticulum
Extracellular matrix
Female
Humans
Joints (anatomy)
Ligaments
Mice
Morphology
Orthopedics
Parity
Pelvis
Postpartum Period - metabolism
Pregnancy
Progenitor cells
Pubic Symphysis - anatomy & histology
Transcription factors
Womens health
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Summary:Pregnancy and childbirth cause adaptations to the birth canal to allow for delivery and fast recovery. To accommodate delivery through the birth canal, the pubic symphysis undergoes changes that lead to the interpubic ligament (IpL) and enthesis formation in primiparous mice. However, successive deliveries influence joint recovery. We aimed to understand tissue morphology and chondrogenic and osteogenic potential at symphyseal enthesis during pregnancy and postpartum in primiparous and multiparous senescent female mice. Morphological and molecular differences were found at the symphyseal enthesis among the study groups. Despite the apparent incapacity to restore cartilage in multiparous senescent animals, the symphyseal enthesis cells are active. However, these cells have reduced expression of chondrogenic and osteogenic markers and are immersed in densely packed collagen fibers contiguous to the persistent IpL. These findings may indicate alterations of key molecules in the progenitor cell population maintenance of the chondrocytic and osteogenic lineages at the symphyseal enthesis in multiparous senescent animals, possibly compromising the mouse joint histoarchitecture recovery. This sheds light on the distention of the birth canal and the pelvic floor that may play a role in pubic symphysis diastasis (PSD) and pelvic organ prolapse (POP), both in orthopedic and urogynecological practice in women.
ISSN:1422-0067
1661-6596
1422-0067
DOI:10.3390/ijms24054573