Association between poverty, low educational level and smoking with adolescent's working memory: cross lagged analysis from longitudinal data.

Background: Working memory is a crucial element of cognitive function. Previous cross-sectional studies have identified various determinants of working memory in children and adolescents. Nonetheless, no study has yet demonstrated the causal relationship of social determinants with working memory in adolescents. Objective: This study explores the causal link between the level of education, smoking, and other factors with adolescent's working memory. Methods: This study analyzed secondary data from waves 4 and 5 of the Indonesia Family Life Survey (IFLS), utilizing cross-lagged analysis in Jamovi version 2.4.8. The variables included working memory score, maternal education, household income, stress, educational level, smoking, urbanicity, and physical activity. These variables were extracted from IFLS waves 4 and 5, and each dependent variable in IFLS wave four was controlled by the same dependent variables in IFLS 5. Then, we used cross-lagged analysis to assess the causality between each dependent variable and a working memory score in IFLS wave 5. Result: The findings indicate that level of education had a positive impact on working memory in adolescents aged 15-18 years, with a Beta value of 0.18 (95% CI 0.81-0.2; p < 0.001). Smoking and age were negatively associated with working memory, with Beta values of -0.07 (95% CI -0.65 -0.04; p < 0.029) and - 0.10 (95% CI -0.25 -0.05; p < 0.003), respectively. No evidence was found for a significant correlation between poverty and adolescents's working memory. Conclusion: The findings indicate that increased education levels are associated with improved working memory in adolescents aged 15-18. At the same time, smoking has a negative impact on working memory in this age group.

Association between poverty and children's working memory abilities in developing countries: a systematic review and meta-analysis.

Introduction: Working memory is critical in cognitive skills, especially among children. Children's ability to count and complete cognitive tasks are strongly associated with working memory abilities. Recent studies indicated that in addition to health factors, socioeconomic status also has a significant impact on children's working memory capacity. Despite these, evidence on the effects of socioeconomic status on working memory from developing countries yielded a somewhat puzzling picture. Methods: This systematic review and meta-analysis provide a comprehensive summary of the recent evidence concerning the socioeconomic status determinants of children's working memory in developing countries. We searched via Cochrane library, ScienceDirect, Scopus, PubMed, and ProQuest. The initial search terms were ["socioeconomic", "socio-economic", "socioeconomic status", "socio-economic status", "income", "poverty", "disadvantaged", "disparity"] AND ["working memory", "short term memory", "short-term memory", "cognitive", "achievement", "performance"] AND ["child*", "school child*"]. Odds ratio (for categorical outcome data) or standardized mean differences (for continuous data) and their 95% confidence intervals were calculated from the data generated. Results: This meta-analysis included five studies from 4 developing countries with a total of 4,551 subjects. Poverty was associated with a lower working memory score (OR: 3.12; 95% CI: 2.66, 3.65; p < 0.001). Another finding from 2 studies in this meta-analysis was that low mother education was associated with a lower score of working memory (OR: 3.26, 95% CI: 2.86, 3.71; p < 0.001). Discussion: Poverty and low level of mothers' education were significant risk factors for lowering working memory among children in developing countries. Systematic review registration: https://www.crd.york.ac.uk/prospero/, identifier: CRD42021270683.

The Effect of Parenting Peer Education Interventions for Young Mothers on the Growth and Development of Children under Five.

One of the contributing factors in the growth and development of children under five is the mother's ability to provide childcare, but young mothers do not have enough parenting skills. The goal of the current study was to examine the effect of the parenting peer education (PPE) programme on young mothers' parenting self-efficacy and behaviour, and the growth and development of children under five. There were two groups, which were a control group (without intervention) and an intervention group, in which there were 15 participants in each group. Analysis covariance with the pre-test scores as covariates was used in this study. The results showed that, compared with the control group, the intervention group reported significantly better parenting self-efficacy, parenting behaviour, children's growth, and children's development, including cognitive, language, and motoric aspects. The PPE programme can exchange the young mothers' experiences on how their children grow and develop, and the mothers will also receive psychological support. In conclusion, the PPE programme affected the young mothers' parenting self-efficacy and parenting behaviour and the children's growth and development.

Proteomic analysis of hypoxia and non-hypoxia secretome mesenchymal stem-like cells from human breastmilk.

INTRODUCTION: Breastmilk contains proteins and cells which have stem cell properties. The human breastmilk stem cell mimick mesenchymal stem cells and expresses pluripotency genes. The protein level of breastmilk is high in colostrum and gradually subsides in the first year of lactation. The mesenchymal stem cells from breastmilk can be an alternative source of stem cells that can potentially affect cardiovascular therapy. This study aimed to identify the proteomic analysis of secretome mesenchymal stem-like cells under hypoxia compared to non-hypoxia from human breastmilk stem cells. MATERIAL AND METHODS: The human breastmilk was collected from six healthy breastfeeding women and transported to the laboratory under aseptic conditions. The breastmilk cells were isolated then cultured. After 72 h, the human breastmilk stem cells reached confluence then cleaned up and isolated in serum-free media (spheroid) to allow serial passaging every 48 h. The acquisition stem cell was made with flow cytometry. The cells were divided into hBSC secretomes under hypoxia (A) and non-hypoxia (B) and analyzed for LC-MS to identify the peptide structure. RESULTS: The human breastmilk cells contained several mesenchymal stem-like cells in density 2.4 × 106 cell/mL for hypoxia and 2 × 106 cell/mL for non-hypoxia conditions. The human breastmilk stem cell surface markers derived from the third cell passage process were 93.77% for CD44, 98.69% for CD73, 88.45% for CD90, and 96.30% for CD105. The protein level of secretome mesenchymal stem -like cells under hypoxia was measured at 5.56 µg/mL and 4.28 µg/mL for non-hypoxia. The liquid chromatography-mass spectrometry analysis identified 130 and 59 peptides from hypoxia and non-hypoxia of the human breastmilk stem cell secretome sequentially. Some important proteomics structures were found in the hypoxic human breastmilk stem cell secretome, such as transforming growth factor-ß, VE-cadherin, and caspase. CONCLUSION: The human breastmilk cells contain mesenchymal stem-like cells and a high concentration of CD44, CD73, CD90, and CD105 as surface markers at third passage culture. The hypoxic hBSC secretome produces a higher protein level compare to non-hypoxia. The transforming growth factor -ß was found in the hypoxic hBSC secretome as a modulator of VEGF-mediated angiogenesis.