a module m is called epi-retractable if every submodule of m is a homomorphic image of m. dually, a module m is called co-epi-retractable if it contains a copy of each of its factor modules. in special case, a ring r is called co-pli (resp. co-pri) if rr (resp. rr) is co-epi-retractable. it is proved that if r is a left principal right duo ring, then every left ideal of r is an epi-retractable ...

Objective: We aimed to determine the significance of MSC-derived exosomes (MSC-Exos) in chondrocyte autophagy under normal and inflammatory conditions.

evaluation of urmia medical university faculty member views about research obstacles r salem safy ,ma bn ashraf rezaei ,?bsc r sadatian , msc z moshirie , msc n sheikhy , a baniadam , msc received: 7april, 2009 accepted: 27 july, 2009 abstract background & aims: identifying research obstacles, assessment of faculty members’ ability in research skills and faculty members’ satisfaction of researc...

Abstract Background and Aims The prevention/attenuation of graft ischemic injury is a challenge in kidney transplantation. We developed two rat models to investigate the impact mesenchymal stromal cells (MSCs) preconditioning kidneys from Donors after Circulatory Death (DCD) Brain (DBD). Method Under general anesthesia, rats underwent iv injection saline (S-groups) or 1.5 106 MSCs (MSC-groups) ...

Background: Mesenchymal stem cells (MSC) are a very promising transplantable stem cell source for a variety of cell replacement therapies. As the main source of MSC is bone marrow (BM), most of studies have been done on BM-derived MSC (BM-MSC). Umbilical cord (UC)-derived MSC (UC-MSC) which are recently introduced, is one of the good alternative source for these cells. The objective of this stu...