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2,630 results
  • Sustained partial remission of a metastatic NEN using off-label immunotherapy with pembrolizumab. [Case Reports]
    Oncotarget 2019; 10(35):3302-3311Stüven AK, Wiedenmann B
  • Neuroendocrine neoplasms (NEN) are a heterogeneous group of tumors, which can be histologically separated by primary location, proliferation rate and differentiation of tumor cells. The therapeutic options and outcome depend on grading, staging and resectability of the tumor. Established treatment options of neuroendocrine tumors (NET) and carcinomas (NEC) are based especially on surgery, tumor s…
  • 111In-DTPA-d-Phe-1-Asp0-d-Phe1-octreotide exhibits higher tumor accumulation and lower renal radioactivity than 111In-DTPA-d-Phe1-octreotide. [Journal Article]
    Nucl Med Biol 2017; 54:18-26Oshima N, Akizawa H, … Ohkura K
  • CONCLUSIONS: 111In-DTPA-d-Phe-1-Asp0-d-Phe1-octreotide exhibited higher tumor accumulation and persistence of tumor radioactivity than 111In-DTPA-d-Phe1-octreotide. We reasoned that this higher tumor accumulation would not be based on the receptor affinity but on a receptor-mediated endocytotic process involved in temperature-dependent cellular uptake. The present study demonstrated the great potential of the pharmaceutical development of a new radiolabeled peptide with high tumor accumulation and low renal radioactivity by the chemical modification of 111In-DTPA-d-Phe1-octreotide.
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