Cold responses and hormonal echoes: a comprehensive view of Raynaud's vascular dysfunction

Area of Science:

• Vascular Biology
• Endocrinology
• Pharmacology

Background:

• Raynaud's phenomenon is a peripheral vascular disorder with increased incidence in premenopausal females.
• Estrogen influences alpha2C-adrenoceptor (α2C-AR) expression, a key mediator of cold-induced vasoconstriction.
• The complex pathogenesis involving vascular, hormonal, and neuronal factors, and lack of animal models, hinders full understanding.

Purpose of the Study:

• To dissect the molecular and cellular mechanisms of Raynaud's phenomenon.
• To elucidate the role of estrogen in Raynaud's phenomenon pathogenesis.
• To explore current and novel therapeutic strategies for Raynaud's phenomenon.

Main Methods:

• Review of molecular and cellular mechanisms.
• Analysis of hormonal influences, particularly estrogen.
• Exploration of traditional, current, and emerging treatments.

Main Results:

• Estrogen potentiates α2C-AR, contributing to Raynaud's phenomenon.
• Pathogenesis remains incompletely understood due to its complex nature.
• Current treatments aim to mitigate symptoms, but definitive cures are lacking.

Conclusions:

• A deeper understanding of Raynaud's phenomenon pathophysiology is crucial for identifying new therapeutic targets.
• Drug repurposing and molecular targeting show promise for future treatments.
• Patient awareness, precaution, and compliance are vital for managing the condition.