Existing chemical contraceptives for men under development are based on altering the levels of sex hormones circulating in the bloodstream in order to inhibit the natural state of male hyper-fertility.
Administration of l-tryptophan significantly decreased the RE-induced esophageal mucosal damage, without altering the levels of melatonin.
There is also a suggestion that large quantities of chocolate could raise insulin levels in the bloodstream, altering the levels of some hormones, again leading to an increase in sebum production.
Giurgea's piracetam, for example, can improve the memory of users by altering the levels of the neurotransmitter acetylcholine, which, in turn, affects the plasticity of synapses in the brain (the extent to which entire brain structures, and the brain itself, can change from experiences).
Nevertheless, we observe that altering the levels of BMP signaling is sufficient to modify Wg target gene expression.
Therefore, by differentially altering the levels of aPKC we find that aPKC performs multiple functions in cell polarity.
We show that this man-made protein disrupts the normal energetic balance of the cell by altering the levels of intracellular ATP.
Past natural or artificial selection leaves its signature on the genome by altering the levels and pattern of nucleotide diversity in a population or species.
This is especially significant since our genetic manipulations were not aimed at altering the levels of VEGF or its receptors, VEGFR1 and VEGFR2 expressed in the glomerular endothelium.
Furthermore, each siRNA inhibited the specific kinase without altering the levels of JNK I, JNK II, or p38 respectively (Figure 4C).
Although our data suggested that hematopoietic stem cells are essential in rescuing these mice from lethal irradiation (Fig. 3D), it is possible that AMD3100 enhances hematological recovery by altering the levels of cytokines/chemokines in marrow microenvironment.
