Key result
XX female mice exhibit increased aortic stiffening and decreased ECM genes versus XY females.
Why the study?
The role of sex chromosomes in regulating aortic integrity and extracellular matrix gene expression contributing to aortic stiffness in female mice was unclear.
Does the XX sex chromosome complement compared to XY affect aortic stiffness and ECM gene expression in female mice?
Population
FCG female mice
Comparison
XX versus XY sex chromosome complement in female mice
Design
Preclinical study
Authors
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Hypothesis-generating for sex chromosome effects on aortic stiffness; leaves open translation to human vascular disease.
Does the XX sex chromosome complement compared to XY affect aortic stiffness and ECM gene expression in female mice?
The XX sex chromosome complement contributes to increased aortic stiffness and downregulation of ECM genes in female mice compared to XY females, highlighting a unique role for sex chromosomes in vascular integrity.
Sakamuri et al. (2025) studied aortic stiffness. XX sex chromosomes vs. XY sex chromosomes was evaluated on aortic stiffening and ECM gene expression. XX female mice exhibited increased aortic stiffening and decreased extracellular matrix genes compared to XY female mice, implying a unique role for sex chromosomes in regulating aortic integrity.
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