Fatty acids support inflammation through various mechanisms, including direct actions on immune cells, toll-like receptors (TLRs), and cytokine signaling, as well by affecting intestinal permeability [9, 10].
Inhibition of the mTORC1 pathway has met with limited success in AML due to multiple resistance mechanisms including direct insensitivity of the mTORC1 complex, feedback activation of the PI3k/Akt signaling network, insulin growth factor-1 (IGF-1) activation of PI3K, and others.
The normal suppression of angiogenesis by TSP-1 and -2 involves multiple mechanisms including direct interaction with vascular endothelial cell growth factor (VEGF), inhibition of matrix metalloproteinase 9 (MMP9) activation, inhibition of endothelial cell migration and induction of endothelial cell apoptosis.
It has been shown that Treg suppress the responses of many cell types, using a variety of mechanisms including direct killing [21], [24], [35].
PPR signaling in T cells is relevant as it increases T cell production of TNF, an osteoclastogenic factor which promotes OC formation through multiple mechanisms, including direct stimulation of maturing OC precursors.
Generally, the induction of SOCS proteins inhibits insulin signaling via several distinct mechanisms, including direct interference with insulin receptor activation, the blockage of IRS activation, and the induction of proteasome-mediated IRS degradation [20], [21].
The compartmentalization of neurons is achieved by several cell biological mechanisms including directed intracellular trafficking, local sequestration, diffusion barriers, and transcytosis (Kennedy and Ehlers, 2006).
Possible mechanisms include direct and indirect mechanical effects like acoustic radiation force, acoustic streaming, and propagation of surface waves, fluid-flow induced circulation and redistribution of nutrients, oxygen and signaling molecules.
Nonbinding mechanisms include direct negotiations between the parties and the involvement of third parties through good offices, mediation, inquiry, and conciliation.
These mechanisms include direct activation as well as disinhibition of sympathoexcitatory neurons in the rostral ventrolateral medulla, and inhibition of the nucleus of the solitary tract with subsequent inhibition of vagal motor outputs in the nucleus ambiguous and dorsal vagal motor nucleus [65].
Although the roles of ROS in resistance to insects are unclear, possible mechanisms include direct toxicity to the insect gut, or they may act as signalling molecules that result in the upregulation of defence genes.
