Furthermore, levels of Numb, a negative regulator of Notch, were shown to be low in ~50% of primary breast tumors [ 45], which could contribute to maintenance of pathway activity.
TM tools can be valuable, not only to support the maintenance of pathway models [ 130], but also to provide direct links from pathways to the supporting evidence in literature [ 95].
The compilation, curation, annotation and maintenance of pathway models require substantial human effort, including reading previously published papers, monitoring the appearance of new ones and interpreting their results [ 126].
Also, Western blot for intracellular messengers of the BMP pathway, P-Smad 1/5/8, showed no striking differences between wild-type and Frzb-/ mice suggesting maintenance of WNT and BMP pathway balance at the tissue level in unchallenged mice.
This cytokine is responsible for maintenance of Th17 pathway which production by Cramoll 1, 4 on 5 μg/mL was 167 pg/mL and for ConA was 15 pg/mL (P < 0.01) showing a high significant difference.
Leadley et al. [ 18] suggested that the maintenance of this pathway in proto-eukaryotes would have meant a high evolutionary cost, due to the need to preserve also the enzymes capable of producing coenzyme B12, and at the same time, the existence of other pathways for propionate utilization may have superceded the selective pressure for preserving this metabolic route.
Note that this primary estimation did not involve direct human ressource-related costs for the implementation and maintenance of the pathway by the Department members, but only direct costs related to the patient-related intervention constituents such as the written material and the reimbursement of personal briefing attendances.
Furthermore, the effect of antenatal hypoxia on the development and maintenance of these pathways could also be assessed.
Many pathological disorders or diseases, including cervical cancer, are characterised by the exacerbated activation and maintenance of inflammatory pathways [ 13, 14].
However, we failed to detect any significant decrease in ERK phosphorylation, JNK phosphorylation and p38 kinase phosphorylation, suggesting that the maintenance of those pathways may require relatively low levels of Nox4 activity in HUVECs.
Under conditions of environmental stress, the plasma membrane is involved in several regulatory processes to promote cell survival, like maintenance of signaling pathways, cell wall organization and intracellular ion homeostasis.
