کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
868643 909811 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Implantable diagnostic device for cancer monitoring
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Implantable diagnostic device for cancer monitoring
چکیده انگلیسی

Biopsies provide required information to diagnose cancer but, because of their invasiveness, they are difficult to use for managing cancer therapy. The ability to repeatedly sample the local environment for tumor biomarker, chemotherapeutic agent, and tumor metabolite concentrations could improve early detection of metastasis and personalized therapy. Here we describe an implantable diagnostic device that senses the local in vivo environment. This device, which could be left behind during biopsy, uses a semi-permeable membrane to contain nanoparticle magnetic relaxation switches. A cell line secreting a model cancer biomarker produced ectopic tumors in mice. The transverse relaxation time (T2) of devices in tumor-bearing mice was 20 ± 10% lower than devices in control mice after 1 day by magnetic resonance imaging (p < 0.01). Short term applications for this device are numerous, including verification of successful tumor resection. This may represent the first continuous monitoring device for soluble cancer biomarkers in vivo.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 24, Issue 11, 15 July 2009, Pages 3252–3257
نویسندگان
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