Cumulative risk exposure and child cellular aging in a Dutch low-risk community sample.

One of the proposed mechanisms linking childhood stressor exposure to negative mental and physical health outcomes in later life is cellular aging. In this prospective, longitudinal, and pre-registered study, we examined the association between a cumulative pattern of childhood risk exposure from age 6 to age 10 (i.e.

Attachment insecurity and the biological embedding of reproductive strategies: Investigating the role of cellular aging.

Evolutionary-developmental psychologists have posited that individuals who grow up in stressful rearing circumstances follow faster life history strategies, thereby increasing their chances of reproduction. This preregistered study tested this stress-acceleration hypothesis in a low-risk longitudinal sample of 193 Dutch mother-child dyads, by investigating whether infant-mother attachment insecurity at 12 months of age predicted earlier pubertal onset and more callous-unemotional traits, aggression and risk-taking about a decade later. Also evaluated were the possible mediating roles of two biomarkers of accelerated aging (i.

Resistant starch diet induces change in the swine microbiome and a predominance of beneficial bacterial populations.

Background: Dietary fibers contribute to health and physiology primarily via the fermentative actions of the host's gut microbiome. Physicochemical properties such as solubility, fermentability, viscosity, and gel-forming ability differ among fiber types and are known to affect metabolism. However, few studies have focused on how they influence the gut microbiome and how these interactions influence host health.

Measuring plasma exudation in nasal lavage fluid and in induced sputum as a tool for studying respiratory tract inflammation.

We performed nasal lavage (NAL) combined with induced sputum to determine exudative inflammation in the upper and lower airways in patients with chronic sinusitis and in controls. To monitor plasma exudation into the respiratory lumen and loss of size-selectivity of the mucosa, we determined the sample-to-serum ratio of albumin and alpha-2-macroglobulin, Qa1b and Qa2m, and the dilution independent Relative Coefficient of Excretion, RCE=Qa2m/Qa1b. To detect low protein levels in NAL and induced sputum we adapted an ELISA system for alpha-2-macroglobulin described by Out et al.