Related Experiment Video
Updated: Jan 25, 2026
07:20
Measuring Erythrocyte Complement Receptor 1 Using Flow Cytometry
Published on: May 19, 2020
7.7K
Erythrocytes as Active Regulators of Blood Flow: A Brief Overview
Felix Scholkmann1,2,3, Martin Wolf4,5, Ursula Wolf6
1Biomedical Optics Research Laboratory, Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland. Felix.Scholkmann@usz.ch.
Advances in Experimental Medicine and Biology
|January 23, 2026
Summary
Red blood cells (RBCs) actively regulate blood flow by releasing adenosine triphosphate (ATP) and nitric oxide (NO). This process of ATP- and NO-mediated vasodilation is crucial for human physiology and understanding disease.
Area of Science:
- Physiology
- Vascular Biology
- Cellular Signaling
Background:
- Red blood cells (RBCs) primarily transport oxygen and carbon dioxide.
- Emerging research highlights RBCs' role in active blood flow regulation.
- Vasoactive substances released by RBCs influence vascular tone.
Purpose of the Study:
- To provide an overview of ATP- and NO-mediated vasodilation by RBCs.
- To explain the physiological and pathophysiological relevance of this RBC function.
Main Methods:
- Literature review of RBCs' role in vasodilation.
- Analysis of signaling pathways involving adenosine triphosphate (ATP) and nitric oxide (NO).
Main Results:
- RBCs release ATP and NO, contributing to vasodilation.
- These substances actively regulate blood flow in the vascular system.
Conclusions:
- RBCs are key players in active blood flow regulation.
- ATP and NO release by RBCs impacts human physiology and pathophysiology.
Related Concept Videos
01:29Blood Flow
75.7K
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
75.7K
01:14Overview of Blood Vessels
10.1K
The human cardiovascular system comprises five primary types of blood vessels: arteries, arterioles, veins, venules, and capillaries, each serving unique functions.
Arteries and Arterioles: Arteries are muscular and elastic vessels that primarily carry oxygenated blood from the heart to body tissues, except for the pulmonary artery, which carries deoxygenated blood. They have thick walls to withstand high pressure and contain a layer of muscle tissue, allowing them to expand or contract as...
Arteries and Arterioles: Arteries are muscular and elastic vessels that primarily carry oxygenated blood from the heart to body tissues, except for the pulmonary artery, which carries deoxygenated blood. They have thick walls to withstand high pressure and contain a layer of muscle tissue, allowing them to expand or contract as...
10.1K
01:18Hypertension and Regulation of Blood Pressure
3.9K
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...
3.9K
01:17Hormonal Regulation of Blood Pressure
6.0K
Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction...
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction...
6.0K
01:16Hormones Regulating Blood Glucose
6.5K
Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
In addition to accelerating glucose uptake and utilization, insulin has...
6.5K
01:18Neural Regulation of Blood Pressure
6.9K
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.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
6.9K