Manganese (II) Complex of 1,4,7-Triazacyclononane-1,4,7-Triacetic Acid (NOTA) as a Hepatobiliary MRI Contrast Agent.

ABSTRACT: Magnetic resonance imaging (MRI) is increasingly used to diagnose focal and diffuse liver disorders. Despite their enhanced efficacy, liver-targeted gadolinium-based contrast agents (GBCAs) raise safety concerns owing to the release of toxic Gd³⁺ ions. A π-conjugated macrocyclic chelate, Mn-NOTA-NP, was designed and synthesized as a non-gadolinium alternative for liver-specific MRI. Mn-NOTA-NP exhibits an r₁ relaxivity of 3.57 mM^-1 s^-1 in water and 9.01 mM^-1 s^-1 in saline containing human serum albumin at 3 T, which is significantly greater than the clinically utilized Mn²⁺-based hepatobiliary drug, Mn-DPDP (1.50 mM^-1 s^-1), and comparable with that of GBCAs. Furthermore,

SUBMITTER: Islam MK 

PROVIDER: S-EPMC10141232 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature