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Related Concept Videos

Aquaporins01:25

Aquaporins

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Aquaporins or AQPs are a family of integral membrane proteins whose primary function is to transport water, while some called aquaglyceroporins also transport glycerol. In addition, aquaporins have also been suspected to be involved in transporting volatile substances, such as carbon dioxide and ammonia, across membranes. Such AQPs that act as gas channels are often highly expressed in cells involved in the gaseous exchange, such as red blood cells, epithelial cells, and pulmonary capillaries.
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Arteries, the vasculature responsible for transporting blood from the heart, possess robust walls capable of enduring the elevated pressures exerted by the heartbeat. Arteries near the heart are especially thick-walled and enriched with elastic fibers across their three tunics, classifying them as elastic or conducting arteries. These arteries, usually with a diameter exceeding 10 mm, are characterized by their ability to dilate in response to the blood pumped from the heart's ventricles...
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The force applied by fluids against a surface, known as hydrostatic pressure, initiates the transfer of fluid among different compartments. Within our blood vessels, the blood's hydrostatic pressure is a result of the heart's pumping action. At the arteriolar end of capillaries, hydrostatic pressure (capillary blood pressure) exceeds the opposing colloid osmotic pressure created primarily by plasma proteins like albumin. This discrepancy in pressure propels plasma and nutrients from the...
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The cardiovascular system's chief role is to disseminate gases, nutrients, waste, and other substances to the body's cells. Small molecules like gases, lipids, and lipid-soluble substances directly diffuse through capillary wall endothelial cell membranes. Glucose, amino acids, and ions, including sodium, potassium, calcium, and chloride, use transporters for facilitated diffusion via membrane-specific channels. Glucose, ions, and bigger molecules may also pass through intercellular...
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The human cardiovascular system comprises five primary types of blood vessels: arteries, arterioles, veins, venules, and capillaries, each serving unique functions.
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The cardiovascular system is a vital transportation system in the body. It comprises the heart and blood vessels and facilitates the exchange of gases, nutrients, and waste products.
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Dynamic Measurement and Imaging of Capillaries, Arterioles, and Pericytes in Mouse Heart
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Aquaporins in Cardiovascular System.

Lu Tie1, Di Wang2, Yundi Shi2

  • 1State Key Laboratory of Natural and Biomimetic Drugs, and Department of Pharmacology, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.

Advances in Experimental Medicine and Biology
|March 5, 2017
PubMed
Summary

Aquaporins (AQPs) are present in the cardiovascular system and influence its function and diseases. Understanding their role offers new therapeutic strategies for cardiovascular conditions.

Keywords:
AngiogenesisAquaporinCerebral ischemiaCongestion heart failureHypertension

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Area of Science:

  • Cardiovascular Biology
  • Molecular Medicine
  • Physiology

Background:

  • Aquaporins (AQPs) are water channel proteins.
  • Specific AQPs (AQP1, AQP4, AQP7, AQP9) are expressed in cardiovascular cells like endothelial and smooth muscle cells, and the heart.
  • These AQPs play roles in cardiovascular function and disease pathogenesis.

Purpose of the Study:

  • To review the expression and physiological functions of AQPs in the cardiovascular system.
  • To summarize current research on the involvement of AQPs in cardiovascular diseases.

Main Methods:

  • Literature review of studies on aquaporins in the cardiovascular system.
  • Analysis of research on aquaporin expression and function in cardiovascular cells.
  • Synthesis of findings related to aquaporins in cardiovascular pathologies.

Main Results:

  • AQPs are confirmed to be expressed in various cardiovascular components.
  • Evidence links these AQPs to normal cardiovascular function.
  • AQPs are implicated in the progression of cardiovascular diseases including cerebral ischemia, heart failure, hypertension, and angiogenesis.

Conclusions:

  • Accurate understanding of the association between AQPs and the cardiovascular system is crucial.
  • Targeting AQPs may offer novel therapeutic avenues for preventing and treating cardiovascular diseases.