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Accordingly, transcriptional repression of DNMT1 in response to long-term stress-mimicking exposure causes decreased DNA methylation, which is a marker of gene activation. In particular, there is decreased methylation of a gene called fkbp5, which plays a role in stress response as a glucocorticoid-responsive gene. Thus, chronic stress may ...
A transcriptome-wide analysis in mice found that a protein-restricted (PR) diet during gestation resulted in differential gene expression in approximately 1% of the fetal genes analyzed (235/22,690). Specifically, increased expression was seen in genes involved in the p53 pathway, apoptosis , negative regulators of cell metabolism, and genes ...
All life on Earth is influenced by the different flows of its environment, yet in humans, different environmental conditions such as poverty, alcohol, stress, malnutrition, exposure to pollutants, man-made chemicals, and synthetic drugs can lead to epigenetic-related illnesses/diseases with certain disease-specific genes typically being activated or deactivated. [12]
Nutritional genomics, also known as nutrigenomics, is a science studying the relationship between human genome, human nutrition and health. People in the field work toward developing an understanding of how the whole body responds to a food via systems biology, as well as single gene/single food compound relationships.
A dysfunctional MAOA gene has been correlated with increased aggression levels in mice, [60] [61] and has been correlated with heightened levels of aggression in humans. [62] In mice, a dysfunctional MAOA gene is created through insertional mutagenesis (called 'Tg8'). [60] Tg8 is a transgenic mouse strain that lacks functional MAO-A enzymatic ...
Behavioral epigenetics is the field of study examining the role of epigenetics in shaping animal and human behavior. [1] It seeks to explain how nurture shapes nature, [2] where nature refers to biological heredity [3] and nurture refers to virtually everything that occurs during the life-span (e.g., social-experience, diet and nutrition, and exposure to toxins). [4]
The Methionine Synthase Reductase (MTRR) gene primarily acts in the reductive regeneration of cob(I)alamin (vitamin B12). [10]Cob(I)alamin is a cofactor that maintains activation of the methionine synthase enzyme (MTR) Methionine synthase, linking folate and methionine metabolism.
Transgenerational epigenetic influences are also suggested to contribute to disease, especially cancer, in humans. [70] Tumor methylation patterns in gene promoters have been shown to correlate positively with familial history of cancer. [71] Furthermore, methylation of the MSH2 gene is correlated with early-onset colorectal and endometrial ...