Search

Developmental regulation theories claim that continuing to pursue a goal when it becomes blocked contributes to poorer wellbeing. This consequence is expected to lead to the use of self-regulation strategies in the form of higher disengagement from the goal and higher reengagement in other meaningful goals. The use of these strategies is expected to lead to better wellbeing. A systematic-review and meta-analyses were conducted to test the major predictions of developmental regulation theories for blocked parenthood goal and to investigate possible moderator variables, particularly type and degree of blockage. A total of eight meta-analyses were performed using random-effects models. Moderation was tested with subgroup analysis. After searching eight databases, 4977 potential relevant manuscripts were identified but only six met inclusion criteria. From the eight meta-analyses conducted, only two were significant. In line with prediction, higher goal blockage was related to higher negative mood and reengagement in other life goals was associated to higher positive mood (p < .001). From a total of eight subgroup analyses performed, results showed that disengaging had a positive impact on wellbeing for people experiencing an unanticipated type of blockage (i.e., infertility) but not for those with an anticipated one (i.e., postponing parenthood; X2 = 4.867, p = .03). From the total of twelve sensitivity analyses performed only one suggested that results might differ. The association between disengagement and mood varied according to study quality. When only average studies were included this association was negative, although non-significant. The evidence obtained did not fully support developmental regulation theories for the pursuit of parenthood goal, but primary research had too many methodological limitations to reach firm conclusions. Future studies aimed at investigating blocked parenthood goal are required to evaluate the value of developmental regulation theories. [ABSTRACT FROM AUTHOR]

Recent metagenomic studies have demonstrated that the overall functional potential of the intestinal microbiome is rather conserved between healthy individuals. Here we assessed the biological processes undertaken in-vivo by microbes and the host in the intestinal tract by conducting a metaproteome analysis from a total of 48 faecal samples of 16 healthy adults participating in a placebo-controlled probiotic intervention trial. Half of the subjects received placebo and the other half consumed Lactobacillus rhamnosus GG for three weeks (1010 cfu per day). Faecal samples were collected just before and at the end of the consumption phase as well as after a three-week follow-up period, and were processed for microbial composition and metaproteome analysis. A common core of shared microbial protein functions could be identified in all subjects. Furthermore, we observed marked differences in expressed proteins between subjects that resulted in the definition of a stable and personalized microbiome both at the mass-spectrometry-based proteome level and the functional level based on the KEGG pathway analysis. No significant changes in the metaproteome were attributable to the probiotic intervention. A detailed taxonomic assignment of peptides and comparison to phylogenetic microarray data made it possible to evaluate the activity of the main phyla as well as key species, including Faecalibacterium prausnitzii. Several correlations were identified between human and bacterial proteins. Proteins of the human host accounted for approximately 14% of the identified metaproteome and displayed variations both between and within individuals. The individually different human intestinal proteomes point to personalized host-microbiota interactions. Our findings indicate that analysis of the intestinal metaproteome can complement gene-based analysis and contributes to a thorough understanding of the activities of the microbiome and the relevant pathways in health and disease. [ABSTRACT FROM AUTHOR]