Plasminogen activator inhibitor-1 in aging
Koji Yamamoto1, Kyosuke Takeshita2, Hidehiko Saito3
1Department of Transfusion Medicine, Nagoya University Hospital, Nagoya, Japan.
Insights
Plasminogen activator inhibitor-1 (PAI-1) is elevated in aging and associated diseases. This review highlights PAI-1
Area of Science:
- Biomedical Science
- Pathophysiology
- Aging Research
Background:
- Plasminogen activator inhibitor-1 (PAI-1) is a key inhibitor of fibrinolysis.
- PAI-1 levels increase in thrombotic, fibrotic, and cardiovascular diseases, common in older adults.
- Elevated PAI-1 is linked to aging pathologies like infarction, atherosclerosis, fibrosis, and metabolic syndromes.
Purpose of the Study:
- To review the role of PAI-1 in the pathophysiology of aging.
- To highlight PAI-1's contribution to aging-associated disorders.
- To discuss PAI-1 as a marker of senescence and the senescence-messaging secretome.
Main Methods:
- Literature review of studies on PAI-1 and aging.
- Analysis of PAI-1's function in fibrinolysis and extracellular matrix degradation.
- Examination of PAI-1 expression in aged individuals and related diseases.
Main Results:
- PAI-1 expression is significantly upregulated in aged individuals.
- PAI-1 is implicated in various aging-associated pathologies, including cardiovascular events and fibrosis.
- PAI-1 is recognized as a marker of cellular senescence.
Conclusions:
- PAI-1 plays a critical role in the development of aging-associated pathological changes.
- Understanding PAI-1's role is crucial for addressing age-related diseases.
- PAI-1 is a significant factor in the aging process and associated health conditions.
Abstract:
Plasminogen activator inhibitor-1 (PAI-1), a principal inhibitor of fibrinolysis, is induced in thrombotic, fibrotic, and cardiovascular diseases, which in turn primarily afflict the older population. This induction of PAI-1 may play an important role in the pathology of these diseases as PAI-1 can regulate the dissolution of fibrin and also inhibit the degradation of the extracellular matrix by reducing plasmin generation. PAI-1 expression is elevated in aged individuals and is significantly upregulated in a variety of pathologies associated with the process of aging, including myocardial and cerebral infarction, vascular (athero) sclerosis, cardiac and lung fibrosis, metabolic syndromes (e.g., hypertension, hyperlipidemia, and insulin resistance), cancer, and inflammatory/stress responses. Thus, PAI-1 may play a critical role in the development of aging-associated pathological changes. In addition, PAI-1 is recognized as a marker of senescence and a key member of a group of proteins collectively known as the senescence-messaging secretome. In this review, we highlight the role of PAI-1 in the pathophysiology of aging and aging-associated disorders.
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