Sex-dependent differences in mitochondrial protein acetylation may critically regulate female antihypertensive protection through mitochondrial pathways preserving endothelial function, representing an understudied mechanism linking metabolic conditions, oxidative stress, vascular dysfunction, and cardiovascular disease.
Hypertension affects one half of adults and accounts for 1 in 5 deaths among American women, posing a greater burden for women than men.
The hypertension rate increases more steeply in women than men, and hypertensive vascular and kidney damage is significantly higher in women.
Women and female-specific risk factors are understudied in basic, clinical, and population research and hypertension guidelines.
Female antihypertensive protection is suggested to be critically dependent on mitochondrial pathways preserving endothelial function.
Proteomic studies show higher expression of mitochondrial fatty acid oxidation and antioxidant enzymes in females, and oxidative damage is lower in females compared with males.
The actual activity of mitochondrial metabolic and antioxidant enzymes is regulated by acetylation, but sex-specific differences in mitochondrial acetylation in vascular disease have not been studied.
This research suggests that women face a disproportionate and growing burden from high blood pressure (hypertension), yet the biological mechanisms that make hypertension different in women compared to men remain poorly understood and understudied. Notably, the rate of hypertension rises more sharply in women as they age, women suffer more severe damage to blood vessels and kidneys from hypertension, and hypertension accounts for 1 in 5 deaths among American women — yet only 1 in 4 patients overall have their blood pressure well controlled. The authors highlight that women and female-specific risk factors are not adequately represented in research or clinical guidelines. This review focuses on a specific biological mechanism that may help explain these sex differences: the chemical modification of proteins inside mitochondria (the energy-producing structures inside cells) through a process called acetylation. While studies have shown that women tend to have higher levels of certain protective mitochondrial proteins involved in energy metabolism and antioxidant defense, the actual activity of those proteins is controlled by acetylation — and whether this process differs between men and women in the context of vascular disease has never been investigated. The authors propose that these differences in mitochondrial protein acetylation may be central to why women have some natural protection against hypertension and cardiovascular disease. This research matters because understanding these sex-specific mitochondrial mechanisms could open new avenues for developing treatments targeting hypertension, particularly therapies tailored to women. It also underscores a broader gap in cardiovascular research: the need to study female biology more thoroughly to improve outcomes for the large and growing population of women living with hypertension and its serious complications, including stroke, heart attack, heart failure, and vascular dementia.
Dikalova A, Dikalov S. (2026). Sex-dependent differences in mitochondrial protein acetylation in metabolic condition, oxidative stress, vascular dysfunction, hypertension, and cardiovascular disease.. Clinical science (London, England : 1979). https://doi.org/10.1042/CS20250226