As Per2 is estrogen-inducible, a feedback mechanism may attenuate stimulation by estrogens [48].
Prolonged treatment with 16 microM phorbol 12-myristate 13-acetate completely blocked protein kinase C activation and markedly attenuated the stimulation of phosphate uptake induced by histamine, establishing that 5-HT and histamine stimulate phosphate uptake through the common pathway of protein kinase C activation.
We demonstrate that synesthesia can be selectively augmented with cathodal stimulation and attenuated with anodal stimulation of primary visual cortex.
EPSPs evoked by fornix stimulation are attenuated by D1 receptor stimulation.
In this context, there is evidence in both adult [ 32] and neonatal [ 29] cardiac myocytes that the pro-hypertrophic consequences of α1-AR stimulation are attenuated by β-AR stimulation through a PKA-mediated pathway, although the molecular mechanism(s) underlying this phenomenon have not been deciphered.
These results suggest that SPRED2 is a putative negative regulator in prostate cancer cells and is capable of attenuating MAPK stimulation by diverse growth factor ligands.
The purpose of this study was to examine whether inhibition of SPARC can regulate collagen expression in vitro and in vivo, and subsequently attenuate fibrotic stimulation by bleomycin in mouse skin and lungs.
Specifically, reducing SirT1 activity alters the homeostasis of cellular responses, including deregulation of the expression of IGFBP-1 and IκBα, which can attenuate the stimulation from the estrogen IGF-1 signaling and potestrogen IGF-1signalingmmand epotentiallyells to NF-κB activation.
A nonsynonymous 142285G>A (R521K) polymorphism, located in the extracellular ligand-binding domain of the EGFR gene has been shown to decrease ligand binding affinity, thus attenuating growth stimulation, tyrosine kinase activation and the induction of protooncogenes such as FOS, JUN, and MYC [ 13].
Samaan [ 86] first illustrated that vagal stimulation attenuated the chronotropic enhancement associated with sympathetic nerve stimulation (SNS), by demonstrating that the actual change in HR with concomitant VNS and SNS was different to the algebraic sum of the heart rate changes during individual stimulation of each branch.
