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Related Concept Videos

Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

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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,...
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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...
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The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
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Hypertension III: Clinical Manifestations and Diagnostic Studies01:30

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Hypertension is asymptomatic and also referred to as the "silent killer" until it progresses to a severe stage or causes target organ disease. Patients may experience symptoms stemming from the strain on blood vessels and tissues in various organs or the heart's increased workload.Physical exams might show no abnormalities other than high blood pressure. Signs of vascular damage, when present, correspond to the organs supplied by the affected vessels, leading to target organ damage. For...
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Cells of the Adaptive Immune Response01:23

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The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
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Hypertension I: Introduction01:28

Hypertension I: Introduction

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Hypertension is a widespread, long-term medical condition where blood pressure in the arteries remains elevated. It is characterized by systolic blood pressure readings of 130 mm Hg or above or diastolic blood pressure (DBP) readings of 80 mm Hg or higher. Unmanaged hypertension poses significant health risks, making the distinction between primary (or essential) hypertension and secondary hypertension crucial, as their management and implications vary.Primary HypertensionPrimary hypertension,...
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Related Experiment Video

Updated: Aug 4, 2025

Intracellular Staining and Flow Cytometry to Identify Lymphocyte Subsets within Murine Aorta, Kidney and Lymph Nodes in a Model of Hypertension
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Single-cell transcriptome profiling reveals enriched memory T-cell subpopulations in hypertension.

Xiaoqi Wang1, Xiaobin Wu2, Pei Zhang3

  • 1Hypertension Center, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Beijing, China.

Frontiers in Cell and Developmental Biology
|April 3, 2023
PubMed
Summary

Memory T cells contribute to high blood pressure (BP). Researchers identified specific CD8 effector memory T (TEM) cell subsets and marker genes (CKS2, PLIN2, CNBP) involved in BP elevation in hypertensive patients.

Keywords:
CD8 effector memory T cellshypertensioninflammationmemory T cellssingle-cell transcriptome profiling

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Area of Science:

  • Immunology
  • Cardiovascular Research
  • Genomics

Background:

  • T cells, crucial for adaptive immunity, are implicated in hypertension.
  • Memory T cells, antigen-specific and responsive to stimuli, are vital but poorly understood in human hypertension.
  • Existing research on memory T cells in hypertension primarily focuses on animal models.

Purpose of the Study:

  • To investigate the role and characteristics of circulating memory T cells in hypertensive patients.
  • To identify specific subsets of memory T cells and their functions in the context of elevated blood pressure.
  • To discover potential molecular targets for managing hypertensive cardiovascular disease.

Main Methods:

  • Single-cell RNA sequencing was employed to analyze circulating memory T cells from hypertensive patients.
  • Identification of distinct memory T cell subsets and exploration of their differentially expressed genes (DEGs).
  • Validation of key identified marker genes using mass-spectrum flow cytometry.

Main Results:

  • Four subsets of memory T cells were identified in hypertensive patients.
  • CD8 effector memory T (TEM) cells were more abundant and functionally diverse than CD4 TEM cells.
  • A specific subpopulation of CD8 TEM cells was found to contribute to blood pressure elevation, with CKS2, PLIN2, and CNBP identified as key marker genes.

Conclusions:

  • CD8 TEM cells play a significant role in the pathophysiology of hypertension.
  • The identified marker genes (CKS2, PLIN2, CNBP) are potential biomarkers and therapeutic targets.
  • Targeting CD8 TEM cells and these specific genes may offer preventive strategies for hypertensive cardiovascular disease.