TY - JOUR TI - The Role of the Local Bone Marrow Renin-Angiotensin System in Multiple Myeloma AB - Objective: Angiotensin II promotes growth and angiogenesis viatype 1 receptors (AGTR1) in certain tumors. In this study, we examinethe bone marrow AGTR1 expression in multiple myeloma (MM) andits relationship with the regulation of angiogenesis and prognosticfactors.Materials and Methods: Bone marrow AGTR1 mRNA levels of 39 MMpatients and 15 healthy controls were analyzed with quantitative RTPCR. Immunohistochemical staining of the tissue vascular endothelialgrowth factor (VEGF), CD34, and factor VIIIrAg (fVIIIrAg) was used toassess bone marrow angiogenesis.Results: Bone marrow samples of the patients showed increasedVEGF, fVIIIrAg, and CD34 staining and higher AGTR1 expression levelswhen compared to controls. Patients with severe-diffuse bone marrowinfiltration showed higher bone marrow VEGF, fVIIIrAg, CD34, andAGTR1 mRNA levels when compared to other patients.Conclusion: AGTR1 expression was found positively correlated withplasma β2-microglobulin level and patients with increased AGTR1expression showed increased bone marrow CD34 levels. AU - Aydın Sayitoglu, Muge AU - Genc, Sema AU - İstemihan, Zülal AU - Saka, Bulent AU - erten, sebile nilgün AU - Tascioglu, Cemil AU - KARAN, MEHMET AU - DOĞAN, Öner AU - Erdem, Simge AU - ÖZBEK, Uğur DO - 10.4274/tjh.galenos.2019.2018.0420 PY - 2019 JO - Turkish Journal of Hematology VL - 36 IS - 3 SN - 1300-7777 SP - 178 EP - 185 DB - TRDizin UR - http://search/yayin/detay/353725 ER -