In a small study published in PLoS ONE in January, researchers found that childhood adversity in the form of maltreatment, parental loss or abandonment altered a control mechanism for a key gene that regulates the brain's ability to handle stress hormones.
Plants respond to environmental stresses through adaptation or avoidance mechanisms by altering a number of morphological and physiological traits (Thapa et al. 2011).
Since NE and AVP activate similar cell signaling mechanisms to induce constriction, the selective enhancement of NE-induced constriction suggests that nicotine alters a mechanism unique to NE signaling; possibly the number or binding affinity of alpha adrenergic receptors.
We have shown that, when effective, the opinions of others alter a very basic mechanism of the human brain that reflects an immediate change in our values.
As Vasquez reasoned, the invention did not technically alter a gun's trigger mechanism, as earlier attempts had, with springs, hydraulics or electric current.
From the data obtained to date, it is clear that stress can alter a potentially important defense mechanism against malignant diseases; stress can not only alter NK cell activity in normal populations but can also depress the ability of NK cells to respond to the cytokines necessary for effective cell killing of appropriate tumor or virally infected cells (Glaser and Kiecolt-Glaser 1994).
Since phosphorylation is a common mechanism to alter a protein's activity, we analyzed the phosphorylation of Dpr and found that XDpr1a is phosphorylated by CKIδ/ε in the presence of XDsh.
An alternative explanation for the increase in the bPL concentrations in peripheral circulation of Foetuses 3 and 4 is that the immunoneutralization of bPL activity led to an increase in bPL synthesis and secretion by the placenta through an altered feedback mechanism, as a compensatory "rebound effect".
Sigrid Adriaenssens' Form Finding Lab is designing mechanisms that alter a building's façade to adapt to environmental conditions such as the changing amount of sunlight over the course of a day, with the goal of maximizing occupant comfort.
This framework, using Monte Carlo analysis and Markov probability matrices, analyzes the execution of potential system "change mechanisms," which alter a system over time to respond to epoch shifts.
Particularly, efficient and sustained replication of EBV particles in primary human monocytes has been confirmed and shown to alter a number of cellular defense mechanisms.
