background: salivary gland tumors (sgt) are rare lesions with uncertain histopathology. one of the major signaling pathways that participate in the development of several tumors is protein kinase a. in this pathway, glycogen synthase kinase β (gsk3β) and camp responsive element binding protein (creb3) are two genes which are supposed to be down regulated in most human tumors. the expression lev...

nitric oxide (no) is thought to be involved in spatial learning and memory in several brain areas such as hippocampus. this study examined the effects of post-training intrahippocampal microinjections of 1400w as a selective inos inhibitor on spatial memory, in anesthetized and non-anesthetized situations in rats. in the present work, 4-day training trials of animals were conducted. spatial mem...

conclusions despite the fact that abnormalities in p53 and p27kip1 may be involved in the development of oscc, their clinical significance in the studied population seems limited. further investigation on the combined p53/p27kip1 expression may be helpful in predicting the biologic behavior of this tumor. results p53 and p27kip1 expression were found in 28.57% (8 positive versus 20 negative) an...