Visceral adipose tissue activated macrophage content and inflammatory adipokine secretion is higher in pre-eclampsia than in healthy pregnancy

Obesity increases preeclampsia risk. Adipose tissue inflammation may contribute to the clinical syndrome of pre-eclampsia. We compared adipose tissue macrophage infiltration and release of pro-inflammatory adipokines in pre-eclampsia and healthy pregnancy. Subcutaneous and visceral adipose tissue biopsies were collected from healthy (n=13) and preeclampsia (n=13) mothers. Basal and lipopolysaccharide stimulated adipocyte TNFα, IL-6, CCL-2 and CRP release was measured. Adipose tissue cell densities of activated (cfms(+)) and total (CD68(+)) macrophages were determined. In pre-eclampsia only, visceral adipose tissue TNFα release was increased after lipopolysaccharide stimulation (57 [76] vs 81 [97] pg/mL/ug DNA, p=0.030). Basal TNFα release was negatively correlated insulin sensitivity of visceral adipocytes (r=-0.61, p=0.030) in pre-eclampsia. Visceral adipocyte IL-6 release was increased after lipopolysaccharide stimulation in pre-eclampsia only (566 [696] vs 852 [914] pg/mL/ugDNA, p=0.019). Visceral adipocyte CCL-2 basal (67 [61] vs 187 [219] pg/mL/ugDNA, p=0.049) and stimulated (46 [46] vs 224 [271] pg/mL/ugDNA, p=0.003) release was greater than in subcutaneous adipocytes in pre-eclampsia only. In pre-eclampsia, median TNF mRNA expression in visceral adipose tissue was higher than controls (1.94 [1.13-4.14] vs 0.8 [0.00-1.27] TNF / PPIA ratio, p=0.006). In visceral adipose tissue, CSF1R (a marker of activated macrophages) mRNA expression (24.8[11.0] vs 51.0[29.9] CSF1R/PPIA ratio, p=0.011) and activated (cfms+) macrophage count (6.7[2.6] vs 15.2[8.8] % cfms+/adipocyte, p=0.031) were higher in pre-eclampsia than in controls. In conclusion, our study demonstrates dysregulation of inflammatory pathways predominantly in visceral adipose tissue in pre-eclampsia. Inflammation of visceral adipose tissue may mediate many of the adverse metabolic effects associated with pre-eclampsia

Stochastic Choice of Allelic Expression in Human Neural Stem Cells

Abstract Monoallelic gene expression, such as genomic imprinting, is well described. Less well-characterized are genes undergoing stochastic monoallelic expression (MA), where specific clones of cells express just one allele at a given locus. We performed genome-wide allelic expression assessment of human clonal neural stem cells derived from cerebral cortex, striatum, and spinal cord, each with differing genotypes. We assayed three separate clonal lines from each donor, distinguishing stochastic MA from genotypic effects. Roughly 2% of genes showed evidence for autosomal MA, and in about half of these, allelic expression was stochastic between different clones. Many of these loci were known neurodevelopmental genes, such as OTX2 and OLIG2. Monoallelic genes also showed increased levels of DNA methylation compared to hypomethylated biallelic loci. Identified monoallelic gene loci showed altered chromatin signatures in fetal brain, suggesting an in vivo correlate of this phenomenon. We conclude that stochastic allelic expression is prevalent in neural stem cells, providing clonal diversity to developing tissues such as the human brain.</jats:p

New Wave Land Use Regulation: The Impact of Impact Fees on Texas Lenders.

Abstract Forthcoming

New Wave Land Use Regulation: The Impact of Impact Fees on Texas Lenders.

Abstract Forthcoming

Respite care and short breaks for young adults aged 18–40 with complex health-care needs: mixed-methods systematic review and conceptual framework development

BackgroundThe number of young adults with complex health-care needs due to life-limiting conditions/complex physical disability has risen significantly over the last 15 years, as more children now survive into adulthood. The transition from children to adult services may disrupt provision of essential respite/short break care for this vulnerable population, but the impact on young adults, families and providers is unclear.AimTo review the evidence on respite care provision for young adults (aged 18–40 years) with complex health-care needs, provide an evidence gap analysis and develop a conceptual framework for respite care.DesignA two-stage mixed-methods systematic review, including a knowledge map of respite care and an evidence review of policy, effectiveness, cost-effectiveness and experience.Data sourcesElectronic databases and grey/unpublished literature were searched from 2002 to September 2019. The databases searched included Cumulative Index to Nursing and Allied Health Literature, MEDLINE, EMBASE, PsycINFO, Applied Social Sciences Index and Abstracts, Health Management Information Consortium, PROSPERO, Turning Research into Practice, COnNECT+, British Nursing Index, Web of Science, Social Care Online, the National Institute for Health Research Journals Library, Cochrane Effective Practice and Organisation of Care specialist register, databases on The Cochrane Library and international clinical trials registers. Additional sources were searched using the CLUSTER (Citations, Lead authors, Unpublished materials, Scholar search, Theories, Early examples, Related projects) approach and an international ‘call for evidence’.Methods and analysisMultiple independent reviewers used the SPICE (Setting, Perspective, Intervention/phenomenon of interest, Comparison, Evaluation) framework to select and extract evidence for each stage, verified by a third reviewer. Study/source characteristics and outcomes were extracted. Study quality was assessed using relevant tools. Qualitative evidence was synthesised using a framework approach and UK policy was synthesised using documentary content analysis. GRADE-CERQual (Grading of Recommendations Assessment, Development and Evaluation-Confidence in the Evidence from Reviews of Qualitative Research) was used to assess confidence in the evidence. Logic models developed for each type of respite care constituted the conceptual framework.ResultsWe identified 69 sources (78 records) from 126,267 records. The knowledge map comprised the following types of respite care: residential, home based, day care, community, leisure/social provision, funded holidays and emergency. Seven policy intentions included early transition planning and prioritising respite care according to need. No evidence was found on effectiveness and cost-effectiveness. Qualitative evidence focused largely on residential respite care. Facilitators of accessible/acceptable services included trusted and valued relationships, independence and empowerment of young adults, peer social interaction, developmental/age-appropriate services and high standards of care. Barriers included transition to adult services, paperwork, referral/provision delay and travelling distance. Young adults from black, Asian and minority ethnic populations were under-represented. Poor transition, such as loss of or inappropriate services, was contrary to statutory expectations. Potential harms included stress and anxiety related to safe care, frustration and distress arising from unmet needs, parental exhaustion, and a lack of opportunities to socialise and develop independence.LimitationsNo quantitative or mixed-methods evidence was found on effectiveness or cost-effectiveness of respite care. There was limited evidence on planned and emergency respite care except residential.ConclusionsPolicy intentions are more comprehensively met for young people aged Future workResearch to quantify the effectiveness and cost-effectiveness of respite care to support service development and commissioning. Development of a core set of outcomes measures to support future collation of evidence.Study registrationThis study is registered as PROSPERO CRD42018088780.FundingThis project was funded by the National Institute for Health Research (NIHR) Health Services and Delivery Research programme and will be published in full in Health Services and Delivery Research; Vol. 9, No. 6. See the NIHR Journals Library website for further project information

The specification, acceptability and effectiveness of respite care and short breaks for young adults with complex healthcare needs: protocol for a mixed-methods systematic review

IntroductionThe number of young adults with complex healthcare needs due to life-limiting conditions/complex physical disability has risen significantly as children with complex conditions survive into adulthood. Respite care and short breaks are an essential service, however, needs often go unmet after the transition to adult services, leading to a significant impact on the life expectancy and quality of life for this population. We aim to identify, appraise and synthesise relevant evidence to explore respite care and short breaks provision for this population, and to develop a conceptual framework for understanding service models.Methods and analysisA mixed-methods systematic review conducted in two stages: (1) knowledge map and (2) evidence review. We will comprehensively search multiple electronic databases; use the Citations, Lead authors, Unpublished materials, Google Scholar, Theories, Early examples, and Related projects (CLUSTER) approach, search relevant websites and circulate a ‘call for evidence’. Using the setting, perspective, intervention/phenomenon of interest, comparison and evaluation framework, two reviewers will independently select evidence for inclusion into a knowledge map and subsequent evidence review, extract data relating to study and population characteristics, methods and outcomes; and assess the quality of evidence. A third reviewer will arbitrate where necessary.Evidence will be synthesised using the following approaches: quantitative (narratively/conducting meta-analyses where appropriate); qualitative (framework approach); policy and guidelines (documentary analysis informed approach). An overall, integrated synthesis will be created using a modified framework approach. We will use Grading of Recommendations Assessment, Development and Evaluation (GRADE)/GRADE-Confidence in the Evidence from Reviews of Qualitative Research to assess the strength and confidence of the synthesised evidence. Throughout, we will develop a conceptual framework to articulate how service models work in relation to context and setting.Ethics and disseminationEthical approval is not required as this is a systematic review. We will present our work in academic journals, at appropriate conferences; we will disseminate findings across networks using a range of media. Steering and advisory groups were established to ensure findings are shared widely and in accessible formats.PROSPERO registration numberCRD42018088780