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一种基于Bis (水) Mn (II) 的MRI对比剂与刚性基纳单元:合成,表征和在vivoMR成像研究中的MR成像研究

Riya Mallik¹, Muktashree Saha², Amrit Sarmah³

¹Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India.

ACS applied bio materials

|March 1, 2024

概括

研究人员开发了一种新的MRI对比剂,具有高稳定性和放松性. 这种新药对医疗成像进行了改进,特别是在肝脏和脏的可视化方面.

科学领域:

医疗成像医学成像
纳米技术纳米技术
材料科学材料科学材料科学

背景情况:

原体系统性纤维化 (NFS) 风险和加多 (Gd(III)) 离子积累需要替代基于加多的MRI对比剂.
(II) (Mn (II)) 复合物正在积极研究作为更安全的,基于营养金属离子的MRI对比剂.
开发稳定和有效的Mn2对比剂对于推进MRI安全性和有效性至关重要.

研究的目的:

合成和表征一种新的五牙联体Li2[BenzPic2]及其双水二复合物 (复合物1).
评估综合体1的热力学稳定性,动力惰性和放松性.
评估复合1作为MRI对比剂在小鼠中的体内性能.

主要方法:

合成一个五牙联体物 (Li2[BenzPic2]),其中包含皮科林酸盐部分和四基纳素单元.
二氧化 () 复合物 (复合物1) 的形成和特征.
在生理条件下测量热力学稳定性 (log Kcond),动力惰性和纵向放松性 (r1).
在静脉注射后,在健康小鼠身上进行了体内MRI研究.

主要成果:

综合体1表现出高热力学稳定性 (log Kcond = 11.62) 和与马格尼维斯特相比较的动力惰性.
复合1的纵向放松率 (r1) 为5.32mM-1s-1,由于蛋白质相互作用 (KA = 1.66 × 103 M-1),与血清白蛋白增加了3.6倍.
在体内MRI显示,在小鼠肝脏血管系统中信号增强非常出色,胆囊,脏和肝脏图像变亮.

结论:

新的Mn2复合体,复合体1,表现出有利的稳定性,运动惰性和放松性质.
它与血清白蛋白的相互作用增强了放松性,这表明有针对性成像的潜力.
复合物1显示出作为一种安全有效的MRI对比剂在体内应用中的显著潜力.

关键词:

磁力共振成像对比剂是一种MRI对比剂.没有水分 (水分)血池对比剂是一种血池对比剂.脂友性脂友性脂友性磁共振成像技术的使用 (II) 复合体 (II) 复合体硬的复杂的复杂的血清阿尔伯明的亲和力

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