Synthesis of a DOTA (Gd3+)-conjugate of proton-pump inhibitor pantoprazole for gastric wall imaging studies
摘要:
Magnetic resonance imaging (MRI) is used to evaluate gastrointestinal (GI) structure and functions in humans. Despite filling the viscus lumen with a contrast agent, visualization of the viscus wall is limited. To overcome this limitation, we de novo synthesized a conjugate that covalently combines a Gd-based MRI contrast agent, encaged with a chelating agent (DOTA), with pantoprazole, which is a widely used proton pump inhibitor that binds to proton pumps in the stomach and colon. The DOTA linkage was installed at a mechanism-based strategic location in the pantoprazole molecule to minimize a possible negative effect of the structural modification on the drug. It is anticipated that by defining the wall of the stomach and colon, this compound will facilitate functional MRI of the GI tract in humans. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis of a DOTA (Gd3+)-conjugate of proton-pump inhibitor pantoprazole for gastric wall imaging studies
摘要:
Magnetic resonance imaging (MRI) is used to evaluate gastrointestinal (GI) structure and functions in humans. Despite filling the viscus lumen with a contrast agent, visualization of the viscus wall is limited. To overcome this limitation, we de novo synthesized a conjugate that covalently combines a Gd-based MRI contrast agent, encaged with a chelating agent (DOTA), with pantoprazole, which is a widely used proton pump inhibitor that binds to proton pumps in the stomach and colon. The DOTA linkage was installed at a mechanism-based strategic location in the pantoprazole molecule to minimize a possible negative effect of the structural modification on the drug. It is anticipated that by defining the wall of the stomach and colon, this compound will facilitate functional MRI of the GI tract in humans. (C) 2012 Elsevier Ltd. All rights reserved.
This disclosure relates to contrast agents and compositions comprising the same that are capable of blocking the hydrogen/potassium adenosine triphosphatase enzyme system, and more particularly to the use of such compositions for imaging stomach and colon volume and motility.
[EN] IMAGING GASTROINTESTINAL VOLUMES AND MOTILITY<br/>[FR] IMAGERIE DES VOLUMES ET DE LA MOTILITÉ GASTRO-INTESTINAUX
申请人:MAYO FOUNDATION
公开号:WO2011005609A2
公开(公告)日:2011-01-13
This disclosure relates to contrast agents and compositions comprising the same that are capable of blocking the hydrogen/potassium adenosine triphosphatase enzyme system, and more particularly to the use of such compositions for imaging stomach and colon volume and motility.
Synthesis of a DOTA (Gd3+)-conjugate of proton-pump inhibitor pantoprazole for gastric wall imaging studies
作者:Ghulam M. Maharvi、Adil E. Bharucha、Abdul H. Fauq
DOI:10.1016/j.bmcl.2012.06.051
日期:2013.5
Magnetic resonance imaging (MRI) is used to evaluate gastrointestinal (GI) structure and functions in humans. Despite filling the viscus lumen with a contrast agent, visualization of the viscus wall is limited. To overcome this limitation, we de novo synthesized a conjugate that covalently combines a Gd-based MRI contrast agent, encaged with a chelating agent (DOTA), with pantoprazole, which is a widely used proton pump inhibitor that binds to proton pumps in the stomach and colon. The DOTA linkage was installed at a mechanism-based strategic location in the pantoprazole molecule to minimize a possible negative effect of the structural modification on the drug. It is anticipated that by defining the wall of the stomach and colon, this compound will facilitate functional MRI of the GI tract in humans. (C) 2012 Elsevier Ltd. All rights reserved.