Here we discuss possible explanations for age-associated increases in the initiation and/or progression of mutant stem/progenitor clones and highlight the roles of stem cell quiescence, replication-associated DNA damage, telomere shortening, epigenetic alterations, and metabolic challenges as determinants of stem cell mutations and clonal dominance in aging.
In this review, Rudolph and colleagues discuss age-associated increases in the initiation and/or progression of mutant stem/progenitor clones and the roles of stem cell quiescence, replication-associated DNA damage, telomere shortening, epigenetic alterations, and metabolic challenges as determinants of stem cell mutations and clonal dominance in aging.
A challenge of analyzing determinants of migration flows is defining a strategy that is robust to possible estimation biases through reverse causality.
Animals infected with the attenuated derivative are protected upon virulent parental challenge, indicating that determinants of virulence may be modulated independently of epitopes responsible for protective immunity.
However, its greatest challenge, and future determinant, remains the ability to deliver.
Krumeich and Meershoek (6) identify major challenges for social determinants of health (SDH) frameworks in forming concrete policies and interventions at the local, national and global levels.
Mapping of the hydrolytic and synthetic subsites and elucidation of the mechanisms that ensure substrate specificity of each subsite pose substantial challenges, because the determinants may be overlapping.
These health challenges and their determinants have largely been maintained by an intergenerational cycle of cumulative effects/trauma (often leading to 'normalized' patterns of ill-health and abuse) which helps explain how a disproportionate number of Aboriginal people experience social and health challenges compared to the general population [ 17].
The challenge is to determine or distinguish between what arises from shared genetic determinants causative for multiple syndromes comprising a syndrome constellation, and what are secondary comorbidities.
The challenges in identifying key determinants of nanomedicine efficacy and monitoring their impact in space and time are non-trivial.
