However, it is believed that this inhibitory action is exerted by influencing ion channels and neurotransmission.
Even if such a mechanism cannot be excluded, the current belief is that a main action is exerted by the stem cells secreting bioactive factors that direct other stem cells to the target organ.
Time (t_d), at which a secondary protective control action is exerted, can be determined by tracking each (s_{f_i,u}(t)) in real-time until one exceeds a prescribed threshold, and satisfies begin{aligned} max _{i in {0,; 1, cdots, N},u in {mathcal{U}}} s_{f_i,u}(t) > s_{th} end{aligned} (10 persistently for a period of time up to (t_d).
These findings led to the hypotheses that: i) an activity-independent, intrinsic mechanism, promotes spine growth over the whole dendritic territory of Purkinje cells [22], [27], [28] and ii) an activity-dependent spine-pruning action is exerted by the climbing fibres near their synapses in the proximal dendrites [19], [24], [25], [29].
These findings led to the hypotheses that: i) an activity-independent, intrinsic mechanism promotes spine growth over the whole Purkinje cell dendritic territory [19], [27] and ii) an activity-dependent spine-pruning action is exerted by the climbing fibres in the territory surrounding their synapses as a kind of lateral inhibition [19], [39].
Its immunological action is exerted, at least in part, via its modulating properties.
Here we show that delayed treatment with a novel PARP-1 inhibitor has great benefit at the clinical and pathological levels, as its therapeutic action was exerted at multiple levels, being associated with the downregulation of inflammatory and Th1-mediated autoimmune components of the disease.
The time-course for the spectrum of effects of testosterone may vary considerably, as testosterone actions are exerted through a cascade of many different pathways.
In earlier work with chlorpyrifos, we showed that the peak period of sensitivity occurs at the initiation of differentiation, where actions are exerted simultaneously through noncholinergic and cholinergic mechanisms (Jameson et al. 2006b; Qiao et al. 2001).
Several substrates for PKG have been identified (reviewed in Schlossmann & Hofmann, 2005) and many of its actions are exerted at the level of phosphatases, leading indirectly to increased or decreased levels of phosphorylation of effector proteins.
In particular, concerning cellular motility, ANXA1 actions are exerted extracellularly via FPRs in autocrine/paracrine manner, but also in the intracellular environment where it contributes to the dynamic reorganization of the actin cytoskeleton [ 11].
