Endocrine Abstracts

Introduction: Neuroendocrine tumors of GI tract are a heterogeneous group of rare neoplasms that secrete peptides and amines. These tumors are highly vascular and their vascularity reflects increased tumour related angiogenesis. Adenosine, a major regulator of angiogenesis, is released by enhanced degradation of ATP, during cellular stress, damage and hypoxia.Material and methods: The expression of adenosine receptors (AR) was investigated in two human n...