Circulating Th1, Th2, and Th17 Levels in Hypertensive Patients

Area of Science:

• Immunology
• Cardiovascular Medicine
• Hypertension Research

Background:

• T helper 1 (Th1), T helper 2 (Th2), and T helper 17 (Th17) cells are implicated in hypertension pathogenesis and target organ damage.
• The association between circulating Th1, Th2, and Th17 levels and nondipper hypertension with carotid atherosclerotic plaque remains unexamined.

Purpose of the Study:

• To investigate the relationship between circulating Th1, Th2, and Th17 cell levels and the presence of nondipper hypertension and carotid atherosclerotic plaque.

Main Methods:

• Flow cytometry was used to quantify Th1, Th2, and Th17 cell frequencies.
• Enzyme-linked immunosorbent assay (ELISA) measured associated cytokine levels (IFN-γ, IL-17, and IL-4).
• The study included 45 hypertensive patients and 15 normotensive controls.

Main Results:

• Hypertensive patients, particularly those with nondipper status and carotid plaque, exhibited significantly higher Th1 and Th17 frequencies and elevated IFN-γ and IL-17 levels.
• Conversely, these patients showed significantly lower Th2 frequencies and reduced IL-4 levels compared to controls.
• These findings suggest distinct T helper cell profiles associated with specific hypertension subtypes and complications.

Conclusions:

• Alterations in Th1, Th2, and Th17 cell activity are associated with the development of nondipper hypertension.
• Changes in Th1, Th2, and Th17 cell activity are linked to the presence of carotid atherosclerotic plaque in hypertensive individuals.
• These T helper cell imbalances may play a role in hypertension progression and associated vascular complications.