However, in terms of antioxidant response, it appears that the transcriptional activation and increased synthesis of antioxidant enzymes are not the major responsive events in lemur torpor.
Interestingly, our results reveal that despite their constitutively trimerized state, the HSF1 mutants we identified are unable to bind DNA in the absence of stress in mammalian cells, suggesting that additional stress responsive events are required to elicit HSF1 DNA binding.
This raises the question of whether autophagy can really serve as an active form of cell death or if it is a cell-responsive event whose features are observed when cells die of irreparable damage [4].
The data presented in this work confirm that the induction of MtN5 is a NF-responsive event, but also show that MtN5 expression is probably controlled by several additional signals, either rhizobia-derived effectors or phytohormones, auxin and cytokinins.
We here report a systematic detection of transcriptome changes in response to oxidative signals generated in leukemia cells upon fenretinide treatment, implicating the occurrence of numerous stress-responsive events during the fenretinide induced apoptosis, such as redox response, endoplasmic reticulum stress/unfolded protein response, translational repression and proteasome activation.
More importantly, as demonstrated in this study, deciphering the mechanistic links among different stress-responsive events may provide a broader view of oxidative stress-mediated apoptosis in cancer cells.
Several lines of evidence suggest that the coordinated regulation of these transcription factors and thus their downstream genes are involved in converting oxidative signaling into downstream stress-responsive events regulating pro-apoptotic and apoptotic activities at the temporal and spatial levels, typifying oxidative stress-mediated programmed death rather than survival in cancer cells.
Therefore, TMEM33 may function as a determinant of the ER stress-responsive events in cancer cells.
The cases included children presenting with suspected hypotonic hypo-responsive events, anaphylaxis, febrile convulsion, non-febrile convulsions, extensive limb swelling, high fevers and skin rashes (reported as allergic events).
Increasing delay in achieving euthyroidism in pregnancies complicated by maternal thyroid dysfunction has been correlated with greater obstetric risks (Abalovich et al., 2002; LaFranchi et al., 2005), suggesting that key thyroid-responsive events during fetoplacental development are gestational age-dependent and may not be corrected at a later stage of pregnancy.
Although the precise defect underlying this inability to bind DNA remains unclear, it is possible that condensed chromatin architecture at specific loci precludes HSF1 DNA binding and an additional heat shock responsive regulatory event is required before trimerized HSF1 can access the promoter.
