Key result
Chronic GRK2 overactivity from lost S-nitrosylation causes aging-related cardiovascular dysfunction and fibrosis in mice.
Why the study?
The role of GRK2 in cardiovascular aging remains largely unknown, despite its established functions in cardiovascular physiology and pathophysiology.
Chronic GRK2 overactivity leads to age-related cardiac dysfunction and remodeling, highlighting its role in cardiovascular aging.
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Should not change clinical practice; leaves open GRK2 S-nitrosylation as a therapeutic target in human cardiovascular aging.
Lieu et al. (2020) studied Cardiovascular dysfunction with aging. GRK2-C340S knockin mutation vs. Wild-type mice was evaluated on Ejection fraction and cardiovascular remodeling. Chronic global overactivity of GRK2 due to loss of S-nitrosylation in GRK2-C340S knockin mice caused significant cardiovascular dysfunction, hypertrophy, and perivascular fibrosis with aging.
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