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Vascular system (alternatively, Blood vessel for molecular specificity) (None for "blood pool" or "vasculature" as a molecule; often VS is used for "vascular system" but not standard)

Target
None for "blood pool" or "vasculature" as a molecule; often VS is used for "vascular system" but not standard
Molecular classification
Other (Anatomical structure, not a molecular class or protein family)
01

Overview

The vasculature or blood pool refers to the body’s system of arteries, veins, and capillaries that distribute blood to all tissues, supplying oxygen/nutrients and removing waste. “Blood pool” is sometimes used in imaging to describe the compartment containing circulating blood, especially as targeted by intravascular contrast agents for visualizing vessel anatomy or function. Neither term denotes a discrete molecular target for therapeutic drugs nor a receptor/enzyme. This entry is not a correct designation for a canonical drug target and should be replaced or subdivided into molecular components (e.g., “Vascular endothelial growth factor receptor”, “Endothelial nitric oxide synthase”) if precise targeting is intended.

Other names
Vascular systemBlood vesselsCirculatory systemCardiovascular system
02

Mechanism of action

Intravascular contrast agents stay within blood pool/vasculature, enhancing vessel visibility for diagnostic imaging (noncovalent binding to albumin or size-exclusion via polymeric chelates)

03

Biological functions

Transport of oxygen and nutrientsRemoval of waste productsRegulation of blood pressureImmune cell trafficking (via endothelial cells)
04

Disease associations

Cardiovascular disease (e.g., atherosclerosis, aneurysm, varicose veins)Cancer (via tumor vasculature, angiogenesis)Inflammation (vasculitis, structural vessel anomalies)
05

Safety considerations

Contrast agent toxicity (e.g., gadolinium retention, allergic reactions)Vascular injury, thrombosis, hemorrhage
06

Interacting drugs

Contrast agents for imaging (e.g., gadofosveset trisodium, gadomelitol)
07

Biomarkers

Vessel permeabilityBlood flowStatic blood pooling (imaging endpoints)

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