HSP70 and Primary Arterial Hypertension.

Area of Science:

• Immunology
• Cardiovascular Science
• Stress Physiology

Background:

• Heat shock protein 70 (HSP70) is a stress-induced protein with dual roles as a chaperone and cytokine.
• HSP70 can elicit either anti-inflammatory or pro-inflammatory/autoimmune responses.
• Hypertension, a major cardiovascular disease risk factor, is an inflammatory condition linked to HSP70's intracellular and extracellular functions.

Purpose of the Study:

• To review the connection between HSP70, inflammation, and immune responses.
• To examine clinical data on stress, HSP70, and anti-HSP70 reactivity in primary hypertension.
• To discuss experimental findings on salt-sensitive hypertension and HSP70 hypersensitivity.

Main Methods:

• Literature review of HSP70's role in inflammation and hypertension.
• Analysis of clinical evidence linking stress, HSP70, and hypertension.
• Examination of experimental data on salt-sensitive hypertension and anti-HSP70 immune responses.

Main Results:

• Stress-induced HSP70 can promote inflammatory immune responses contributing to hypertension.
• Salt-sensitive hypertension is associated with delayed hypersensitivity to HSP70, specifically kidney inflammation.
• Anti-HSP70 reactivity in the kidneys can be mitigated by T-cell inhibition of inflammation via specific HSP70 epitopes.

Conclusions:

• Lifelong stress and danger signals activate HSP70.
• Individual genetic and epigenetic factors dictate whether HSP70 response leads to hypertension or protective immunomodulation.
• Targeting HSP70-triggered inflammation offers a potential strategy for hypertension prevention and treatment.