Related Experiment Video
Updated: May 3, 2026
09:29
Isolation and Adoptive Transfer of High Salt Treated Antigen-presenting Dendritic Cells
Published on: March 5, 2019
5.2K
Immune mechanisms in hypertension.
Carolina De Ciuceis1, Claudia Rossini, Elisa La Boria
1Clinica Medica, Department of Clinical and Experimental Sciences, c/o 2a Medicina Spedali Civili di Brescia, University of Brescia, Piazza Spedali Civili 1, 25100, Brescia, Italy.
Summary
Low grade inflammation, particularly involving T helper 1 (Th1) and regulatory T (Treg) lymphocytes, plays a key role in hypertension and cardiovascular disease pathogenesis. Understanding these immune cells offers new therapeutic targets for hypertension and related organ damage.
Area of Science:
- Immunology
- Cardiovascular Medicine
- Nephrology
Background:
- Low-grade inflammation is implicated in hypertension and cardiovascular disease.
- Both innate and adaptive immune systems, especially T cells, are involved.
- The balance between Th1 effector and Treg lymphocytes is crucial for blood pressure regulation and organ damage.
Purpose of the Study:
- To explore the role of immune cells, particularly T lymphocytes, in the pathogenesis of hypertension.
- To highlight the significance of the Th1/Treg balance in cardiovascular homeostasis and organ damage.
- To identify novel therapeutic targets for hypertension and related diseases based on immune mechanisms.
Main Methods:
- Review of existing studies on immune system involvement in hypertension.
- Analysis of the roles of Th1 and Treg lymphocytes in blood pressure regulation.
- Examination of inflammatory mechanisms in vascular remodeling and kidney injury.
Main Results:
- Activated Th1 cells contribute to persistent hypertension by affecting vasculature, kidneys, and perivascular fat.
- Treg cells possess anti-inflammatory properties and protect against blood pressure elevation and organ damage.
- Inflammation drives vascular remodeling and contributes to acute kidney injury, with Treg infusion showing protective effects.
Conclusions:
- Hypertension development involves a chronic inflammatory process.
- Immune cells, especially T lymphocytes, are central players in hypertension progression and target organ damage.
- Understanding the immune basis of hypertension can lead to new therapeutic strategies for cardiovascular and renal diseases.
Related Concept Videos
01:29Hypertension II: Pathophysiology
1.8K
Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...
1.8K
01:18Hypertension and Regulation of Blood Pressure
3.8K
Hypertension, the most common cardiovascular disease, is diagnosed through repeated measurements of elevated blood pressure. Its risks, including damage to the kidney, heart, and brain, are directly proportional to blood pressure levels. Starting from 115/75 mm Hg, the risk of cardiovascular disease doubles with each increment of 20/10 mm Hg. The diagnosis relies on blood pressure measurements, not on patient symptoms, as hypertension is often asymptomatic until end-organ damage is imminent or...
3.8K
01:30Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors
2.7K
Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
2.7K
01:25Antihypertensive Drugs: Direct Renin Inhibitors
1.9K
The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
1.9K
01:17Antihypertensive Drugs: Action of β1 Blockers
2.2K
β1-receptors are primarily located in the heart and kidneys. In cardiac myocytes, these receptors interact with neurotransmitters released by the sympathetic nervous system during heightened activity or danger. As a result, β1-receptors get activated, initiating a series of biochemical processes. Excessive activation of beta receptors due to chronic stress can abnormally increase heart rate and contractility, resulting in high blood pressure or hypertension. To counteract this,...
2.2K
01:26Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
1.9K
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
1.9K