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Polygenic risk scores (PRSs) discriminate trait risks better than single genetic markers because they aggregate the effects of risk alleles from multiple genetic loci. Constructing pleiotropic PRSs and understanding heterogeneity, and the replication of PRS-trait associations can strengthen its applications. By using variational Bayesian multivariate high-dimensional regression, we constructed pleiotropic PRSs jointly associated with body mass index, systolic and diastolic blood pressure, total and high-density lipoprotein cholesterol in a sample of 18,108 Caucasians from three independent cohorts. We found that dissecting heterogeneity associated with birth year, which is a proxy of exogenous exposures, improved the replication of significant PRS-trait associations from 37.5% (6 of 16) in the entire sample to 90% (18 of 20) in the more homogeneous sample of individuals born before the year 1925. Our findings suggest that secular changes in exogenous exposures may substantially modify pleiotropic risk profiles affecting translation of genetic discoveries into health care.Background To determine the prevalence and severity of acute kidney injury (AKI) at different time frames in relation to gestational age (GA) and birthweight (BW) in extremely low gestational age neonates (ELGAN). Our hypothesis is that ELGAN with lower GA and lower BW have higher AKI rates. Methods A total of 923 ELGAN enrolled in the Preterm Erythropoietin Neuroprotection Trial were evaluated from birth until death or hospital discharge. AKI was defined according to kidney disease improving global outcomes (KDIGO) definition from clinically-derived serum creatinine (SCr) measurements. Severe AKI was defined as stage 2 or higher. Results For the entire cohort, 351/923 (38.0%, CI = 34.8-41.3%) had at least one episode of stage 1 or higher AKI and 168/923 (18.2%, CI = 15.7-20.7%) had at least one episode of severe (stage 2 or higher) AKI. The prevalence of AKI stage 1 or higher for the entire cohort during the early (days 3-7), middle (days 8-14), and late follow-up period (after day 14) was 112/923 (12.1%, CI = 10.0-14.3%), 142/891 (15.9%, CI = 13.5-18.4%), and 249/875 (28.5%, CI = 25.4-31.5%), respectively. The rates of severe AKI during the hospital course were 27.8%, 21.9%, 13.6%, and 9.4% for the 24-, 25-, 26-, and 27-week GA groups, respectively. AKI rates were significantly higher with decreasing GA and decreasing BW for stated time trends (all p less then 0.01 using tests for trend). Conclusions AKI is relatively common in ELGAN during their initial hospital course and is associated with lower GA and BW.Background Acute kidney injury (AKI) often occurs in pediatric patients who received allogeneic hematopoietic cell transplantation (HCT). We evaluated the risk and effect of HCT-related AKI in pediatric patients. Methods We retrospectively studied the survival and renal outcome of 69 children 100 days and 1-year posttransplant in our institution in 2004-2016. Stage-3 AKI developed in 34 patients (49%) until 100 days posttransplant. Results The 100-day overall survival (OS) rates of patients with stage-3 AKI were lower than those without it (76.5% vs. 94.3%, P = 0.035). The 1-year OS rates did not differ markedly between 21 post-100-day survivors with stage-3 AKI and 29 without it (80.8% vs. 87.9%, P = 0.444). The causes of 19 deaths included the relapse of underlying disease or graft failure (n = 11), treatment-related events (4), and second HCT-related events (4). Underlying disease of malignancy (crude hazard ratio (HR) 5.7; 95% confidence interval (CI), 2.20 to 14.96), > 1000 ng/mL ferritinemia (crude HR 4.29; 95% CI, 2.11 to 8.71), stem cell source of peripheral (crude HR 2.96; 95% CI, 1.22 to 7.20) or cord blood (crude HR 2.29; 95% CI, 1.03 to 5.06), and myeloablative regimen (crude HR 2.56; 95% CI, 1.24 to 5.26), were identified as risk factors for stage-3 AKI until 100 days posttransplant. Hyperferritinemia alone was significant (adjusted HR 5.52; 95% CI, 2.21 to 13.76) on multivariable analyses. Conclusions Hyperferritinemia was associated with stage-3 AKI and early mortality posttransplant. Pretransplant iron control may protect the kidney of pediatric HCT survivors.In the context of hematopoietic cell transplantation, hematopoietic stem/progenitor cells (HSPC) from the umbilical cord blood (UCB) present several advantages compared to adult sources including higher proliferative capacity, abundant availability and ease of collection, non-risk and painless harvesting procedure, and lower risk of graft-versus-host disease. However, the therapeutic utility of UCB HSPC has been limited to pediatric patients due to the low cell frequency per unit of UCB. The development of efficient and cost-effective strategies to generate large numbers of functional UCB HSPC ex vivo would boost all current and future medical uses of these cells. Herein, we describe a scalable serum-free co-culture system for the expansion of UCB-derived CD34+-enriched cells using microcarrier-immobilized human bone marrow-derived mesenchymal stromal cells as feeder cells.Elder abuse is an emerging worldwide public health, human right, and social priority for governments and health policy makers. The aim of the current study was to provide an in-depth quantitative analysis of literature on elder abuse published in academic journals. A bibliometric method was implemented using Scopus database for the study period from 1950 to 2017. The search strategy utilized specific keywords to retrieve relevant documents. One thousand eight hundred seventy-two documents appeared in Scopus when using the search strategy. https://www.selleckchem.com/products/caspofungin-acetate.html The annual number of publications showed a fluctuating pattern in the past four decades. Publications on elder abuse originated mainly from Northern America and Western Europe. International research collaboration on elder abuse was relatively low. The mean number of authors per document was 1.4. The Journal of Elder Abuse and Neglect published almost one third of the retrieved documents. The Rush University was the most active institution and Professor Dong, X.Q. was the most active author in this field. The most frequently encountered keywords were risk factors, prevalence, intervention, prevention, dementia, and nursing homes. Physical abuse was the most common type of elder abuse studied followed by psychological and financial abuse. Elder abuse is under-researched and of limited priority in most world regions. Governments need to take into consideration preventive policies of elder abuse based on research findings.
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