What does this research mean for the field?

miR-30a-5p is a crucial sex-specific regulator of heart failure, primarily HFpEF, functioning through estrogen signaling to enhance cardiac compliance and metabolic adaptation. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to investigate the role of miR-30a-5p in regulating heart failure mechanisms, particularly focusing on sex differences mediated by estrogen.

February 2, 2026Cardiovascular Diabetology0 citationsOpen Access

Sex-specific cardioprotective role of miR-30a-5p through estrogen-dependent mechanisms in a mouse model of heart failure

LZLe Zhang MQMinxue Quan XZXiaocheng Zhang

Key Result

miR-30a-5p acts as a crucial sex-specific regulator of heart failure, mainly HFpEF, operating through estrogen signaling to balance cardiac compliance and metabolic adaptation in mice.

Key Points

This research aims to investigate the role of miR-30a-5p in regulating heart failure mechanisms, particularly focusing on sex differences mediated by estrogen.
Utilized a mouse model to study heart failure, specifically HFpEF.
Examined the effects of mir-30a-5p on cardiac compliance and metabolic processes.
Investigated estrogen signaling pathways involved in the regulatory mechanisms.
miR-30a-5p is crucial for regulating heart failure adaptations in a sex-specific manner.
Estrogen signaling was found to enhance cardiac compliance in relation to miR-30a-5p activity.
The study suggests a significant role of miR-30a-5p in metabolic adaptation during heart failure.

Structured PICO

Does miR-30a-5p knockout or overexpression alter susceptibility to HFD/L-NAME-induced HFpEF in male and female mice?

Population

C57BL/6J wild-type (WT) and miR-30a-5p knockout (KO) mice, 6-8 weeks old, male and female (n=8/group).

Intervention

High-fat diet (60 kcal% fat) and L-NAME (0.5 g/L in drinking water) for 24 weeks to induce HFpEF; AAV2/9-mediated miR-30a-5p overexpression; ovariectomy (OVX).

Comparator

Normal diet (10 kcal% fat) and plain water; AAV-NC (empty vector); sham surgery.

Outcome

Cardiac systolic/diastolic function (LVEF, E/E'), blood pressure, exercise endurance, myocardial hypertrophy, and cardiac fibrosis at 24 weeks.surrogate

miR-30a-5p acts as a crucial sex-specific cardioprotective regulator in HFpEF, operating through estrogen-dependent mechanisms to maintain cardiac compliance and metabolic adaptation in females.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

These findings establish miR-30a-5p as a crucial sex-specific regulator of HF (mainly HFpEF), operating through estrogen signaling to balance cardiac compliance and metabolic adaptation.

Perguntar à IA

Bookmark

View Full Paper