Environmental DNA methods for biosecurity and invasion biology in terrestrial ecosystems: Progress, pitfalls, and prospects.

Analysis of environmental DNA (eDNA) enables indirect detection of species without the need to directly observe and sample them. For biosecurity and invasion biology, eDNA-based methods are useful to address biological invasions at all phases, from detecting arrivals to confirming eradication of past invasions. We conducted a systematic review of the literature and found that in biosecurity and invasion biology, eDNA has primarily been used to detect new incursions and monitor spread in marine and freshwater ecosystems, with much slower uptake in terrestrial ecosystems, reflecting a broader trend common to the usage of eDNA tools. In terrestrial ecosystems, eDNA research has mostly focussed on the use of eDNA metabarcoding to characterise biodiversity, rather than targeting biosecurity threats or non-native populations. We discuss how eDNA-based methods are being applied to terrestrial ecosystems for biosecurity and managing non-native populations at each phase of the invasion continuum: transport, introduction, establishment, and spread; across different management options: containment, control, and eradication; and for detecting the impact of non-native organisms. Finally, we address some of the current technical issues and caveats of eDNA-based methods, particularly for terrestrial ecosystems, and how these might be solved. As eDNA-based methods improve, they will play an increasingly important role in the early detection and adaptive management of biological invasions, and the implementation of effective biosecurity controls.

"When I was Younger, My Story Belonged to Everyone Else": Co-production of Resources for Adults Living with Craniosynostosis.

OBJECTIVE: Despite growing recognition that congenital craniofacial conditions have lifelong implications, psychological support for adults is currently lacking. The aim of this project was to produce a series of short films about living with craniosynostosis in adulthood, alongside a psychoeducational booklet. DESIGN: The resources were developed using multiple focus groups and meetings attended by researchers, patient representatives, a leading charitable organisation, an award-winning film production company, clinicians, and other experts in the field. RESULTS: An online mixed-methods survey was developed based on prior work to request feedback on the acceptability and utility of the resources from the craniosynostosis community. While data collection to evaluate the resources is ongoing, preliminary results (n = 36) highlight an acceptability rating of 100%. CONCLUSIONS: The resources developed represent a step forward in addressing the unmet information and support needs of adults with craniosynostosis and highlight the benefits of co-production in research.

Preparation and Imaging of Specialized ER Using Super-Resolution and TEM Techniques.

The plant endoplasmic reticulum (ER) forms several specialized structures. These include the sieve element reticulum (SER) and the desmotubule formed as the ER passes through plasmodesmata. Imaging both of these structures has been inhibited by the resolution limits of light microscopy and their relatively inaccessible locations, combined with the fragile nature of the ER. Here we describe methods to view desmotubules in live cells under 3D-structured illumination microscopy (3D-SIM) and methods to fix and prepare phloem tissue for both 3D-SIM and transmission electron microscopy (TEM), which preserve the fragile structure and allow the detailed imaging of the SER.

Graded Response Model Analysis and Computer Adaptive Test Simulation of the Depression Anxiety Stress Scale 21: Evaluation and Validation Study.

BACKGROUND: The Depression Anxiety Stress Scale 21 (DASS-21) is a mental health screening tool with conflicting studies regarding its factor structure. No studies have yet attempted to develop a computer adaptive test (CAT) version of it. OBJECTIVE: This study calibrated items for, and simulated, a DASS-21 CAT using a nonclinical sample. METHODS: An evaluation sample (n=580) was used to evaluate the DASS-21 scales via confirmatory factor analysis, Mokken analysis, and graded response modeling. A CAT was simulated with a validation sample (n=248) and a simulated sample (n=10,000) to confirm the generalizability of the model developed. RESULTS: A bifactor model, also known as the "quadripartite" model (1 general factor with 3 specific factors) in the context of the DASS-21, displayed good fit. All scales displayed acceptable fit with the graded response model. Simulation of 3 unidimensional (depression, anxiety, and stress) CATs resulted in an average 17% to 48% reduction in items administered when a reliability of 0.80 was acceptable. CONCLUSIONS: This study clarifies previous conflicting findings regarding the DASS-21 factor structure and suggests that the quadripartite model for the DASS-21 items fits best. Item response theory modeling suggests that the items measure their respective constructs best between 0θ and 3θ (mild to moderate severity).

A review of immunization legislation for children in English- and Dutch-speaking Caribbean countries.

Objective: To assess the legislative frameworks concerning childhood vaccination in the English- and Dutch-speaking Caribbean and propose a model legislative framework for Caribbean countries. Methods: This study included a survey of 22 countries and territories in the Caribbean regarding legal vaccination mandates for school entry, budget allocations, sanctions, or exemptions. A legal consultant conducted a comprehensive search and analysis of legislation regarding vaccination among 13 Caribbean countries/territories. A comparative analysis of the legislation under five themes-legislative structure, mandatory vaccination, national immunization schedule, sanctions, and exemptions-formed the basis for the proposed model legislation. Results: Among the 22 Caribbean countries/territories, 17 (77%) had legislation mandating vaccination, 16 (94%) mandated vaccination for school entry, 8 (47%) had a dedicated budget for immunization programs, and 13 (76%) had no legislated national schedules. The source of legislation includes six (35%) using the Education Act, eight (47%) the Public Health Act, and five (29%) a free-standing Vaccination Act. Three countries/territories-Jamaica, Montserrat, and Saint Lucia-had immunization regulations. In 12 (71%) of the 17 countries with legislation, sanctions were included, and 10 (59%) permitted exemptions for medical or religious/philosophical beliefs. Conclusions: Several countries in the Caribbean have made failure to vaccinate a child an offense. By summarizing the existing legislative frameworks and approaches to immunization in the Caribbean, the analysis guides policymakers in making effective changes to immunization legislation in their own countries.

A review of immunization legislation for children in English- and Dutch-speaking Caribbean countries

[ABSTRACT]. Objective. To assess the legislative frameworks concerning childhood vaccination in the English- and Dutch-speaking Caribbean and propose a model legislative framework for Caribbean countries. Methods. This study included a survey of 22 countries and territories in the Caribbean regarding legal vaccination mandates for school entry, budget allocations, sanctions, or exemptions. A legal consultant conducted a comprehensive search and analysis of legislation regarding vaccination among 13 Caribbean countries/ territories. A comparative analysis of the legislation under five themes—legislative structure, mandatory vaccination, national immunization schedule, sanctions, and exemptions—formed the basis for the proposed model legislation. Results. Among the 22 Caribbean countries/territories, 17 (77%) had legislation mandating vaccination, 16 (94%) mandated vaccination for school entry, 8 (47%) had a dedicated budget for immunization programs, and 13 (76%) had no legislated national schedules. The source of legislation includes six (35%) using the Education Act, eight (47%) the Public Health Act, and five (29%) a free-standing Vaccination Act. Three countries/ territories—Jamaica, Montserrat, and Saint Lucia—had immunization regulations. In 12 (71%) of the 17 countries with legislation, sanctions were included, and 10 (59%) permitted exemptions for medical or religious/ philosophical beliefs. Conclusions. Several countries in the Caribbean have made failure to vaccinate a child an offense. By summarizing the existing legislative frameworks and approaches to immunization in the Caribbean, the analysis guides policymakers in making effective changes to immunization legislation in their own countries.

[RESUMEN]. Objetivo. Evaluar los marcos legislativos relativos a la vacunación infantil en el Caribe de habla inglesa y neerlandesa y proponer un modelo de marco legislativo para los países del Caribe. Métodos. En este estudio se incluyó una encuesta en 22 países y territorios del Caribe sobre los requisitos legales de vacunación para el ingreso escolar, asignaciones presupuestarias, sanciones o exenciones. Un consultor jurídico realizó una búsqueda y un análisis exhaustivos de la legislación relativa a la vacunación en 13 países y territorios del Caribe. Un análisis comparativo de la legislación dividido en cinco temas (estructura legislativa, vacunación obligatoria, calendario nacional de vacunación, sanciones y exenciones) formó la base del modelo de legislación propuesto. Resultados. Entre los 22 países y territorios del Caribe, 17 (77%) contaban con leyes sobre vacunación obligatoria, 16 (94%) exigían la vacunación para el ingreso escolar, 8 (47%) tenían un presupuesto dedicado a los programas de vacunación y 13 (76%) no disponían de calendarios nacionales estipulados por ley. Entre las fuentes de la legislación, seis países y territorios (35%) empleaban la ley de educación, ocho (47%) la ley de salud pública y cinco (29%) una ley independiente de vacunación. Tres países y territorios —Jamaica, Montserrat y Santa Lucía— disponían de regulaciones sobre vacunación. Doce (71%) de los 17 países con legislación tenían sanciones y 10 (59%) permitían exenciones por creencias médicas o religiosas o filosóficas. Conclusiones. Varios países del Caribe han tipificado como delito el no vacunar a un niño o niña. Al resumir los enfoques y marcos legislativos existentes para la vacunación en el Caribe, este análisis ofrece orientaciones a los responsables de formular las políticas para que realicen modificaciones efectivas en la legislación relativa a la vacunación en sus propios países.

[RESUMO]. Objetivo. Avaliar as estruturas da legislação relativas à vacinação em crianças no Caribe de língua inglesa e holandesa e propor um modelo de legislação para os países caribenhos. Métodos. Este estudo incluiu uma pesquisa relativa à exigência legal em 22 países e territórios do Caribe de vacinação para admissão em escolas, alocações orçamentárias, sanções ou isenções. Um consultor jurídico realizou ampla pesquisa e análise da legislação relativa à vacinação em 13 países/territórios do Caribe. Uma análise comparativa da legislação referente a cinco temas – estrutura legislativa, vacinação obrigatória, cronograma nacional de imunização, sanções e isenções – formou a base para o modelo de legislação proposto. Resultados. Entre os 22 países/territórios caribenhos, 17 (77%) tinham legislação que exigia a vacinação; em 16 (94%), a vacinação era obrigatória para admissão na escola; 8 (47%) tinham orçamento exclusivo para programas de imunização; e em 13 (76%), a legislação não contemplava cronogramas nacionais. Com relação à fonte da legislação, seis (35%) países usavam a legislação de educação; oito, (47%) a Legislação de Saúde Pública; e cinco (29%), legislação de vacinação independente. Três países/territórios - Jamaica, Montserrat e Santa Lúcia - tinham regulamentações para imunização. Dos 17 países com legislação, 12 (71%) incluíam sanções e 10 (59%) permitiam isenções por crenças médicas ou religiosas/filosóficas. Conclusões. Diversos países do Caribe estabelecem que não vacinar uma criança é violação da lei. Ao resumir as estruturas de legislação existentes e as abordagens da imunização no Caribe, a análise orienta os formuladores de políticas a realizar mudanças efetivas na legislação de imunização em seus próprios países.

Raising a Child with Craniosynostosis: Psychosocial Adjustment in Caregivers.

OBJECTIVE: While knowledge of the psychosocial impact of craniofacial conditions is growing, literature regarding the impact on parents remains limited. Parents of children born with a health condition may be at risk of experiencing a range of psychosocial challenges. This study conducted an initial investigation of psychosocial adjustment of parents of individuals with craniosynostosis to inform support provision for families. SETTING: An online UK-wide mixed-methods survey was distributed to members of Headlines Craniofacial Support. DESIGN: Quantitative data including standardized measures were analysed using descriptive statistics and independent samples t-tests, and inductive content analysis was used for open-ended questions. PARTICIPANTS: Mothers (n = 109) and fathers (n = 9) of individuals ages 3 months to 49 years with single suture (63%) or syndromic (33%) craniosynostosis participated. RESULTS: Compared to the general population, parents of individuals with craniosynostosis reported higher levels of stress, anxiety, and depression; lower levels of resilience and optimism. Qualitative responses provided insight into parents' experiences of birth, diagnosis, healthcare provision, familial wellbeing, and relationships. Parents reported several unmet information and support needs, alongside a range of positive outcomes. CONCLUSIONS: This study illustrates the potential long-term psychosocial implications for parents raising children with craniosynostosis. There is a need for routine psychological screening for family members and provision of appropriate psychological support for those at risk for distress. Non-specialist health professionals may benefit from additional training about craniofacial conditions so they are better equipped to support and refer families.

Psychological and Physical Health Outcomes in Adults With Craniosynostosis.

OBJECTIVES: Within current research, little is known about the long-term outcomes of craniosynostosis. A priority-setting exercise by UK charity Headlines Craniofacial Support identified 2 key questions in this area: (1) What are the long-term physical and psychological effects for individuals with syndromic and non-syndromic craniosynostosis? and (2) Are individuals with craniosynostosis likely to suffer from mental health difficulties, or are they more resilient? The aim of the current study was to conduct an initial investigation of these priority questions. METHODS: A comprehensive UK-wide survey consisting of 9 standardized psychological outcome measures and open-ended questions was distributed online. Thirty-six eligible adults (69.4% female) with a mean age of 30.8 years responded to the survey. Participants reported having single suture craniosynostosis (27.8%) or syndromic craniosynostosis (52.8%), with 19.4% being unsure of their diagnosis. Sample means were compared to published norms using independent samples t tests. Qualitative responses were analysed using inductive content analysis. RESULTS: Compared to the general population, participants reported significantly less favorable scores related to appearance concerns, attachment in adult relationships, anxiety, optimism, and resilience. Self-worth, depression, and social anxiety scores were similar to norms. Qualitative responses provided additional insight into participants' satisfaction with appearance, physical health, medical treatment, employment, relationships, and recurrence risks. Few participants had accessed psychological support. DISCUSSION: This preliminary study illustrates the potential long-term implications for individuals with craniosynostosis. Improved treatment protocols are needed to address physical health concerns in adulthood, while dedicated psychological resources are necessary to promote emotional well-being, social confidence, and resilience.

An integrative bioinformatics pipeline shows that honeybee-associated microbiomes are driven primarily by pollen composition.

The microbiomes associated with bee nests influence colony health through various mechanisms, although it is not yet clear how honeybee congeners differ in microbiome assembly processes, in particular the degrees to which floral visitations and the environment contribute to different aspects of diversity. We used DNA metabarcoding to sequence bacterial 16S rRNA from honey and stored pollen from nests of 4 honeybee species (Apis cerana, A. dorsata, A. florea, and A. laboriosa) sampled throughout Yunnan, China, a global biodiversity hotspot. We developed a computational pipeline integrating multiple databases for quantifying key facets of diversity, including compositional, taxonomic, phylogenetic, and functional ones. Further, we assessed candidate drivers of observed microbiome dissimilarity, particularly differences in floral visitations, habitat disturbance, and other key environmental variables. Analyses revealed that microbiome alpha diversity was broadly equivalent across the study sites and between bee species, apart from functional diversity which was very low in nests of the reclusive A. laboriosa. Turnover in microbiome composition across Yunnan was driven predominantly by pollen composition. Human disturbance negatively impacted both compositional and phylogenetic alpha diversity of nest microbiomes, but did not correlate with microbial turnover. We herein make progress in understanding microbiome diversity associated with key pollinators in a biodiversity hotspot, and provide a model for the use of a comprehensive informatics framework in assessing pattern and drivers of diversity, which enables the inclusion of explanatory variables both subtly and fundamentally different and enables elucidation of emergent or unexpected drivers.

Plants, pollinators and their interactions under global ecological change: The role of pollen DNA metabarcoding.

Anthropogenic activities are triggering global changes in the environment, causing entire communities of plants, pollinators and their interactions to restructure, and ultimately leading to species declines. To understand the mechanisms behind community shifts and declines, as well as monitoring and managing impacts, a global effort must be made to characterize plant-pollinator communities in detail, across different habitat types, latitudes, elevations, and levels and types of disturbances. Generating data of this scale will only be feasible with rapid, high-throughput methods. Pollen DNA metabarcoding provides advantages in throughput, efficiency and taxonomic resolution over traditional methods, such as microscopic pollen identification and visual observation of plant-pollinator interactions. This makes it ideal for understanding complex ecological networks and their responses to change. Pollen DNA metabarcoding is currently being applied to assess plant-pollinator interactions, survey ecosystem change and model the spatiotemporal distribution of allergenic pollen. Where samples are available from past collections, pollen DNA metabarcoding has been used to compare contemporary and past ecosystems. New avenues of research are possible with the expansion of pollen DNA metabarcoding to intraspecific identification, analysis of DNA in ancient pollen samples, and increased use of museum and herbarium specimens. Ongoing developments in sequencing technologies can accelerate progress towards these goals. Global ecological change is happening rapidly, and we anticipate that high-throughput methods such as pollen DNA metabarcoding are critical for understanding the evolutionary and ecological processes that support biodiversity, and predicting and responding to the impacts of change.

A review of immunization legislation for children in English- and Dutch-speaking Caribbean countries / Revisión de los marcos legislativos sobre vacunación infantil en países de habla inglesa y neerlandesa del Caribe / Revisão da legislação relativa à imunização em crianças nos países do Caribe de língua inglesa e holandesa

ABSTRACT Objective. To assess the legislative frameworks concerning childhood vaccination in the English- and Dutch-speaking Caribbean and propose a model legislative framework for Caribbean countries. Methods. This study included a survey of 22 countries and territories in the Caribbean regarding legal vaccination mandates for school entry, budget allocations, sanctions, or exemptions. A legal consultant conducted a comprehensive search and analysis of legislation regarding vaccination among 13 Caribbean countries/territories. A comparative analysis of the legislation under five themes—legislative structure, mandatory vaccination, national immunization schedule, sanctions, and exemptions—formed the basis for the proposed model legislation. Results. Among the 22 Caribbean countries/territories, 17 (77%) had legislation mandating vaccination, 16 (94%) mandated vaccination for school entry, 8 (47%) had a dedicated budget for immunization programs, and 13 (76%) had no legislated national schedules. The source of legislation includes six (35%) using the Education Act, eight (47%) the Public Health Act, and five (29%) a free-standing Vaccination Act. Three countries/territories—Jamaica, Montserrat, and Saint Lucia—had immunization regulations. In 12 (71%) of the 17 countries with legislation, sanctions were included, and 10 (59%) permitted exemptions for medical or religious/philosophical beliefs. Conclusions. Several countries in the Caribbean have made failure to vaccinate a child an offense. By summarizing the existing legislative frameworks and approaches to immunization in the Caribbean, the analysis guides policymakers in making effective changes to immunization legislation in their own countries.

RESUMEN Objetivo. Evaluar los marcos legislativos relativos a la vacunación infantil en el Caribe de habla inglesa y neerlandesa y proponer un modelo de marco legislativo para los países del Caribe. Métodos. En este estudio se incluyó una encuesta en 22 países y territorios del Caribe sobre los requisitos legales de vacunación para el ingreso escolar, asignaciones presupuestarias, sanciones o exenciones. Un consultor jurídico realizó una búsqueda y un análisis exhaustivos de la legislación relativa a la vacunación en 13 países y territorios del Caribe. Un análisis comparativo de la legislación dividido en cinco temas (estructura legislativa, vacunación obligatoria, calendario nacional de vacunación, sanciones y exenciones) formó la base del modelo de legislación propuesto. Resultados. Entre los 22 países y territorios del Caribe, 17 (77%) contaban con leyes sobre vacunación obligatoria, 16 (94%) exigían la vacunación para el ingreso escolar, 8 (47%) tenían un presupuesto dedicado a los programas de vacunación y 13 (76%) no disponían de calendarios nacionales estipulados por ley. Entre las fuentes de la legislación, seis países y territorios (35%) empleaban la ley de educación, ocho (47%) la ley de salud pública y cinco (29%) una ley independiente de vacunación. Tres países y territorios —Jamaica, Montserrat y Santa Lucía— disponían de regulaciones sobre vacunación. Doce (71%) de los 17 países con legislación tenían sanciones y 10 (59%) permitían exenciones por creencias médicas o religiosas o filosóficas. Conclusiones. Varios países del Caribe han tipificado como delito el no vacunar a un niño o niña. Al resumir los enfoques y marcos legislativos existentes para la vacunación en el Caribe, este análisis ofrece orientaciones a los responsables de formular las políticas para que realicen modificaciones efectivas en la legislación relativa a la vacunación en sus propios países.

RESUMO Objetivo. Avaliar as estruturas da legislação relativas à vacinação em crianças no Caribe de língua inglesa e holandesa e propor um modelo de legislação para os países caribenhos. Métodos. Este estudo incluiu uma pesquisa relativa à exigência legal em 22 países e territórios do Caribe de vacinação para admissão em escolas, alocações orçamentárias, sanções ou isenções. Um consultor jurídico realizou ampla pesquisa e análise da legislação relativa à vacinação em 13 países/territórios do Caribe. Uma análise comparativa da legislação referente a cinco temas - estrutura legislativa, vacinação obrigatória, cronograma nacional de imunização, sanções e isenções - formou a base para o modelo de legislação proposto. Resultados. Entre os 22 países/territórios caribenhos, 17 (77%) tinham legislação que exigia a vacinação; em 16 (94%), a vacinação era obrigatória para admissão na escola; 8 (47%) tinham orçamento exclusivo para programas de imunização; e em 13 (76%), a legislação não contemplava cronogramas nacionais. Com relação à fonte da legislação, seis (35%) países usavam a legislação de educação; oito, (47%) a Legislação de Saúde Pública; e cinco (29%), legislação de vacinação independente. Três países/territórios - Jamaica, Montserrat e Santa Lúcia - tinham regulamentações para imunização. Dos 17 países com legislação, 12 (71%) incluíam sanções e 10 (59%) permitiam isenções por crenças médicas ou religiosas/filosóficas. Conclusões. Diversos países do Caribe estabelecem que não vacinar uma criança é violação da lei. Ao resumir as estruturas de legislação existentes e as abordagens da imunização no Caribe, a análise orienta os formuladores de políticas a realizar mudanças efetivas na legislação de imunização em seus próprios países.

Genomics reveals the history of a complex plant invasion and improves the management of a biological invasion from the South African-Australian biotic exchange.

Many plants exchanged in the global redistribution of species in the last 200 years, particularly between South Africa and Australia, have become threatening invasive species in their introduced range. Refining our understanding of the genetic diversity and population structure of native and alien populations, introduction pathways, propagule pressure, naturalization, and initial spread, can transform the effectiveness of management and prevention of further introductions. We used 20,221 single nucleotide polymorphisms to reconstruct the invasion of a coastal shrub, Chrysanthemoides monilifera ssp. rotundata (bitou bush) from South Africa, into eastern Australia (EAU), and Western Australia (WAU). We determined genetic diversity and population structure across the native and introduced ranges and compared hypothesized invasion scenarios using Bayesian modeling. We detected considerable genetic structure in the native range, as well as differentiation between populations in the native and introduced range. Phylogenetic analysis showed the introduced samples to be most closely related to the southern-most native populations, although Bayesian analysis inferred introduction from a ghost population. We detected strong genetic bottlenecks during the founding of both the EAU and WAU populations. It is likely that the WAU population was introduced from EAU, possibly involving an unsampled ghost population. The number of private alleles and polymorphic SNPs successively decreased from South Africa to EAU to WAU, although heterozygosity remained high. That bitou bush remains an invasion threat in EAU, despite reduced genetic diversity, provides a cautionary biosecurity message regarding the risk of introduction of potentially invasive species via shipping routes.

Transcranial Direct Current Stimulation Combined With Listening to Preferred Music Alters Cortical Speech Processing in Older Adults.

Emerging evidence suggests transcranial direct current stimulation (tDCS) can improve cognitive performance in older adults. Similarly, music listening may improve arousal and stimulate subsequent performance on memory-related tasks. We examined the synergistic effects of tDCS paired with music listening on auditory neurobehavioral measures to investigate causal evidence of short-term plasticity in speech processing among older adults. In a randomized sham-controlled crossover study, we measured how combined anodal tDCS over dorsolateral prefrontal cortex (DLPFC) paired with listening to autobiographically salient music alters neural speech processing in older adults compared to either music listening (sham stimulation) or tDCS alone. EEG assays included both frequency-following responses (FFRs) and auditory event-related potentials (ERPs) to trace neuromodulation-related changes at brainstem and cortical levels. Relative to music without tDCS (sham), we found tDCS alone (without music) modulates the early cortical neural encoding of speech in the time frame of ∼100-150 ms. Whereas tDCS by itself appeared to largely produce suppressive effects (i.e., reducing ERP amplitude), concurrent music with tDCS restored responses to those of the music+sham levels. However, the interpretation of this effect is somewhat ambiguous as this neural modulation could be attributable to a true effect of tDCS or presence/absence music. Still, the combined benefit of tDCS+music (above tDCS alone) was correlated with listeners' education level suggesting the benefit of neurostimulation paired with music might depend on listener demographics. tDCS changes in speech-FFRs were not observed with DLPFC stimulation. Improvements in working memory pre to post session were also associated with better speech-in-noise listening skills. Our findings provide new causal evidence that combined tDCS+music relative to tDCS-alone (i) modulates the early (100-150 ms) cortical encoding of speech and (ii) improves working memory, a cognitive skill which may indirectly bolster noise-degraded speech perception in older listeners.

Translational researchers' training and development needs, preferences, and barriers: A survey in a National Institute for Health Research Biomedical Research Centre in the United Kingdom.

The objective was to identify translational researchers' training and development needs, preferences, and barriers to attending training. This cross-sectional study involved an online questionnaire survey. The research population comprised a convenience sample of translational researchers and support staff (N = 798) affiliated with the National Institute for Health Research Oxford Biomedical Research Centre. The response rate was 24%. Of 189 respondents, 114 were women (60%) and 75 were men (40%). The respondents were mainly research scientists (31%), medical doctors and dentists (17%), and research nurses and midwives (16%). Many of the respondents had attended at least one training course in the last year (68%). Training in statistics and data analysis was the most common training received (20%). Leadership training was the most wanted training (25%). Morning was the most preferred time of training (60%). Half a day was the ideal duration of a training course (41%). The main teaching hospital site was the most preferred location of training (46%). An interactive workshop was the most favored delivery style of training (52%). Most common barriers to attending training were the lack of time (31%), work (21%) and clinical commitments (19%), and family and childcare responsibilities (14%). Some differences in training needs, preferences, and barriers were found by gender and role, though these were not statistically significant. Translational researchers want short, easily accessible, and interactive training sessions during the working day. The training needs, preferences, and barriers to attending training need to be considered while developing inclusive training programs in biomedical research settings.

A Booklet to Promote Psychological Health in New Families Affected by Craniosynostosis.

ABSTRACT: Recent research indicates that parents of children with craniosynostosis may be at risk of emotional distress. Yet, parents may not be accessing the support they need to cope with common challenges. The aim of this project was to develop a research-informed booklet to promote psychological health in new families, and to assess acceptability of the booklet within the craniosynostosis community. The first draft was designed in close collaboration with leading UK charity Headlines Craniofacial Support 5 parent representatives, and 3 specialist clinical psychologists via online focus groups. The draft booklet, attached to an online acceptability survey, was distributed to a broader group of parents and multidisciplinary specialists working in craniofacial teams in England for feedback. A total of 44 complete responses to the online acceptability survey were received. Acceptability (measured by the number of respondents who would recommend the booklet) was 100%. All respondents reported they "agreed" or "strongly agreed" with the UK-wide distribution of the booklet. Evidence for psychological intervention in the craniofacial field remains scarce, and specialist teams may be under-resourced to effectively screen and support parents. It is hoped this booklet will begin to address the gap in psychological support for new families affected by craniosynostosis.

Comparing whole-genome shotgun sequencing and DNA metabarcoding approaches for species identification and quantification of pollen species mixtures.

Molecular identification of mixed-species pollen samples has a range of applications in various fields of research. To date, such molecular identification has primarily been carried out via amplicon sequencing, but whole-genome shotgun (WGS) sequencing of pollen DNA has potential advantages, including (1) more genetic information per sample and (2) the potential for better quantitative matching. In this study, we tested the performance of WGS sequencing methodology and publicly available reference sequences in identifying species and quantifying their relative abundance in pollen mock communities. Using mock communities previously analyzed with DNA metabarcoding, we sequenced approximately 200Mbp for each sample using Illumina HiSeq and MiSeq. Taxonomic identifications were based on the Kraken k-mer identification method with reference libraries constructed from full-genome and short read archive data from the NCBI database. We found WGS to be a reliable method for taxonomic identification of pollen with near 100% identification of species in mixtures but generating higher rates of false positives (reads not identified to the correct taxon at the required taxonomic level) relative to rbcL and ITS2 amplicon sequencing. For quantification of relative species abundance, WGS data provided a stronger correlation between pollen grain proportion and sequence read proportion, but diverged more from a 1:1 relationship, likely due to the higher rate of false positives. Currently, a limitation of WGS-based pollen identification is the lack of representation of plant diversity in publicly available genome databases. As databases improve and costs drop, we expect that eventually genomics methods will become the methods of choice for species identification and quantification of mixed-species pollen samples.

Non-canonical Keap1-independent activation of Nrf2 in astrocytes by mild oxidative stress.

The transcription factor Nrf2 is a stress-responsive master regulator of antioxidant, detoxification and proteostasis genes. In astrocytes, Nrf2-dependent gene expression drives cell-autonomous cytoprotection and also non-cell-autonomous protection of nearby neurons, and can ameliorate pathology in several acute and chronic neurological disorders associated with oxidative stress. However, the value of astrocytic Nrf2 as a therapeutic target depends in part on whether Nrf2 activation by disease-associated oxidative stress occludes the effect of any Nrf2-activating drug. Nrf2 activation classically involves the inhibition of interactions between Nrf2's Neh2 domain and Keap1, which directs Nrf2 degradation. Keap1 inhibition is mediated by the modification of cysteine residues on Keap1, and can be triggered by electrophilic small molecules such as tBHQ. Here we show that astrocytic Nrf2 activation by oxidative stress involves Keap1-independent non-canonical signaling. Keap1 deficiency elevates basal Nrf2 target gene expression in astrocytes and occludes the effects of tBHQ, oxidative stress still induced strong Nrf2-dependent gene expression in Keap1-deficient astrocytes. Moreover, while tBHQ prevented protein degradation mediated via Nrf2's Neh2 domain, oxidative stress did not, consistent with a Keap1-independent mechanism. Moreover the effects of oxidative stress and tBHQ on Nrf2 target gene expression are additive, not occlusive. Mechanistically, oxidative stress enhances the transactivation potential of Nrf2's Neh5 domain in a manner dependent on its Cys-191 residue. Thus, astrocytic Nrf2 activation by oxidative stress involves Keap1-independent non-canonical signaling, meaning that further Nrf2 activation by Keap1-inhibiting drugs may be a viable therapeutic strategy.

Dynamic Useful Field of View Training to Enhance Older Adults' Cognitive and Motor Function: A Pilot Study.

Useful Field of View (UFOV) computerized cognitive training improves older adults' gait speed and balance and reduces dementia risk. We investigated a new form of UFOV training requiring physical movement, Training Under Cognitive Kinematics (TUCK). We hypothesized TUCK would be acceptable, feasible, and potentially efficacious to improve UFOV Test- and motor performance. Sixty-nine older adults were randomized to TUCK, computerized UFOV training, or an active control group. Cognitive- and motor function were assessed before and immediately after the intervention period. Participants rated TUCK as enjoyable, engaging and satisfying, indicating acceptability. Eighty-five percent of participants completed TUCK, demonstrating feasibility. Overall, effect sizes for TUCK did not indicate greater efficacy than computerized UFOV training relative to controls. UFOV training showed effect sizes indicating improved balance as measured by Turn 360 (d=0.37) and Optogait (d=0.51-0.69) from pre- to post- training relative to controls. Incorporating movement into UFOV cognitive training did not enhance cognitive or motor functional gains. Future investigations are needed to elucidate the underlying mechanisms of UFOV cognitive training to enhance motor function. Research should continue to investigate the association of cognitive and motor function and interventions to improve these outcomes among older adults. The trial and planned analyses were pre-registered: https://osf.io/7utgw.

Cognitive Event-Related Potential Responses Differentiate Older Adults with and without Probable Mild Cognitive Impairment.

Background: Older adults rarely seek cognitive assessment, but often visit other healthcare professionals (e.g., audiologists). Noninvasive clinical measures within the scopes of practice of those professions sensitive to cognitive impairment are needed. Purpose: This study examined the differences of probable mild cognitive impairment (MCI) on latency and mean amplitude of the P3b auditory event-related potential. Method: Fifty-four participants comprised two groups according to cognitive status (cognitively normal older adults [CNOA], n = 25; probable MCI, n = 29). P3b was recorded using an oddball paradigm for speech (/ba/, /da/) and non-speech (1000, 2000 Hz) stimuli. Amplitudes and latencies were compared from six electrodes (FPz, Fz, FCz, Cz, CPz, Pz) between groups across stimulus probability and type. Results: CNOA participants had larger P3b mean amplitudes for deviant stimuli than those with probable MCI. Group effects of latency were isolated to deviant stimuli at FCz only when those with unclear P3bs were included. Findings did not covary with age or education. Overall, CNOAs showed a large P3b oddball effect while those with probable MCI did not. Conclusions: P3b can be used to show electrophysiological differences between older adults with and without probable MCI. These results support the development of educational materials targeting professionals using auditory-evoked potentials.

The Entorhinal Cortical Alvear Pathway Differentially Excites Pyramidal Cells and Interneuron Subtypes in Hippocampal CA1.

The entorhinal cortex alvear pathway is a major excitatory input to hippocampal CA1, yet nothing is known about its physiological impact. We investigated the alvear pathway projection and innervation of neurons in CA1 using optogenetics and whole cell patch clamp methods in transgenic mouse brain slices. Using this approach, we show that the medial entorhinal cortical alvear inputs onto CA1 pyramidal cells (PCs) and interneurons with cell bodies located in stratum oriens were monosynaptic, had low release probability, and were mediated by glutamate receptors. Optogenetic theta burst stimulation was unable to elicit suprathreshold activation of CA1 PCs but was capable of activating CA1 interneurons. However, different subtypes of interneurons were not equally affected. Higher burst action potential frequencies were observed in parvalbumin-expressing interneurons relative to vasoactive-intestinal peptide-expressing or a subset of oriens lacunosum-moleculare (O-LM) interneurons. Furthermore, alvear excitatory synaptic responses were observed in greater than 70% of PV and VIP interneurons and less than 20% of O-LM cells. Finally, greater than 50% of theta burst-driven inhibitory postsynaptic current amplitudes in CA1 PCs were inhibited by optogenetic suppression of PV interneurons. Therefore, our data suggest that the alvear pathway primarily affects hippocampal CA1 function through feedforward inhibition of select interneuron subtypes.