کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10587985 981444 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and evaluation of a 99mTcN-PNP complex of sanazole analogue for detecting tumor hypoxia
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Preparation and evaluation of a 99mTcN-PNP complex of sanazole analogue for detecting tumor hypoxia
چکیده انگلیسی
A sanazole derivative, having a favorable single electron reduction potential (SERP) value compared to that of misonidazole, was synthesized and radiolabeled with [99mTcN(PNP)] precursor to evaluate its potential as a hypoxia imaging agent. The complex, which was lipophilic, could be prepared in good yields and challenging studies with cysteine showed stability of the complex against trans-chelation. However, despite being lipophilic as well as possessing favorable SERP value, biodistribution studies of this complex in fibrosarcoma tumor bearing Swiss mice showed low uptake in tumor. This observation is possibly attributed to fast clearance of the complex from blood, whereby the complex spends insufficient time in tumor to get reduced and trapped. Though uptake in tumor was low, slow clearance of activity from tumor suggests reduction and trapping of the complex in hypoxic cells. The present 99mTc-complex demonstrated acceptable values of tumor to blood (TBR) and tumor to muscle (TMR) ratios. However, low uptake in tumor which may not be indicative of the actual hypoxic status of the tumor, limit the utility of the complex to detect tumor hypoxia.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry Letters - Volume 23, Issue 5, 1 March 2013, Pages 1394-1397
نویسندگان
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