In particular, the prosurvival and proproliferative kinases Akt and ERK1/2 have been shown to be dephosphorylated (deactivated), whilst proinflammatory/cell death molecules such as the p38 and JNK kinases and the transcription factor NF- κ B may be activated by RCM, accompanied by activation of apoptotic mediators such as caspases.
Phosphoinositide 3-kinase promotes cancer cell survival by activation of downstream mediators AKT and Ras, the latter leading to ERK activation (McCubrey et al, 2007).
Type 2 diabetes is characterized by activation of multiple inflammatory processes, mediators and pathways [ 40, 41]; vascular damage leading to atherosclerosis is a typical pathological consequence [ 42] partly mediated in fact by specific RAGE (receptor of AG E which initiate further cascades of inflammation [ 43].
The resulting free radicals initiate the inflammatory process in the cochlea by activating signal transducer and activator of transcription-1 (STAT1), followed by activation of p53 and increase in inflammatory mediators like TNF-alpha and interleukin-1 β [ 23].
The intrinsic pathway is triggered by cellular stress, which initiates the release of mitochondrial proapoptotic mediators followed by activation of initiator caspase-9 and downstream effector caspases.
Chronic cerebral hypoperfusion-induced inflammation is characterized by activation of glial cells and overexpression of inflammatory mediators, such as TNF-α and IL-1β [ 8, 11, 36].
The complement system is a key mediator of tissue damage after I/R, primarily by activation of the lectin pathway.
Basically, oxidative stress contributes to septic inflammation and cellular injury by causing activation of inflammatory mediators, including ROS, transcription factors, and MAPKs, and dysfunction of survival-associated proteins, lipids, and DNA [35], [36].
In order to characterize the apoptosis induced in MCF-7 cell line, we evaluated the activation of apoptosis mediators by different TTHL concentrations.
Post-hypothermic increase in TNF-α and reduced plasma albumin concentration in our experiment may indicate activation of inflammatory mediators by cooling-rewarming, as has been shown in both surface- and endovascular - cooling in the same species [ 48, 51].
