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Current mental health disorder rates for preadolescent and adolescent girls demonstrate a disturbing trend, most notably a drastic increase in reports of non-suicidal self-injury (NSSI), especially in the age category of 10- to 14-year-olds. NSSI has become normalized in the adolescent population, and social contagion--the spreading of NSSI through peer and media influence--has become a significant concern. This article defines and discusses NSSI and social contagion and explores why preadolescent and adolescent girls may be particularly vulnerable to it. Further, current Canadian approaches to mental health promotion and primary prevention are reviewed, and an argument is made for the development and implementation of elementary school-based, gender-specific, comprehensive mental health programs. Incorporating interconnected evidence-based protective factors such as self-worth, self-compassion, emotion regulation, healthy relationships, communication, and family and school systems will provide young girls with valuable skills and knowledge to mitigate their engagement with NSSI and to resist social contagion.

Background Exposure to early childhood adversities, such as family violence, parental depression, or low-income, undermine parent–child relationship quality and attachment leading to developmental and mental health problems in children. Addressing impacts of early childhood adversity can promote children’s development, giving them the best start in life. Parental reflective function (RF), or parents' ability to understand their own and children's mental states, can strengthen parent–child relationships and attachment and buffer the negative effects of early adversity. We developed and tested ATTACH™ (Attachment and Child Health), an effective RF intervention program for parents and their preschool-aged children at-risk from early adversity. Pilot studies revealed significantly positive impacts of ATTACH™ from in-person ( n  = 91 observations of 64 dyads) and online ( n  = 10 dyads) implementation. The two objectives of this study are to evaluate: (1) effectiveness, and (2) implementation fidelity and uptake of ATTACH™ Online in community agencies serving at-risk families in Alberta, Canada. Our primary hypothesis is ATTACH™ Online improves children’s development. Secondary hypotheses examine whether ATTACH™ Online improves children’s mental health, parent–child relationships, and parental RF. Methods We will conduct an effectiveness-implementation hybrid (EIH) type 2 study. Effectiveness will be examined with a quasi-experimental design while implementation will be examined via descriptive quantitative and qualitative methods informed by Normalization Process Theory (NPT). Effectiveness outcomes examine children’s development and mental health, parent–child relationships, and RF, measured before, after, and 3 months post-intervention. Implementation outcomes include fidelity and uptake of ATTACH™ Online, assessed via tailored tools and qualitative interviews using NPT, with parents, health care professionals, and administrators from agencies. Power analysis revealed recruitment of 100 families with newborn to 36-month-old children are sufficient to test the primary hypothesis on 80 complete data sets. Data saturation will be employed to determine final sample size for the qualitative component, with an anticipated maximum of 20 interviews per group (parents, heath care professionals, administrators). Discussion This study will: (1) determine effectiveness of ATTACH™ Online and (2) understand mechanisms that promote implementation fidelity and uptake of ATTACH™ Online. Findings will be useful for planning spread and scale of an effective online program poised to reduce health and social inequities affecting vulnerable families. Trial registration Name of registry: https://clinicaltrials.gov/ . Registration number: NCT05994027. Date of registration: July 22, 2023. Protocol version Version 1.

ObjectiveTo understand parental perspectives regarding universal newborn screening (UNS) for congenital cytomegalovirus (cCMV) in Canada.DesignA qualitative, patient-led study using the Patient and Community Engagement Research approach consisting of online focus groups and in-depth individual interviews to understand parental preferences regarding UNS for cCMV. Data were analysed iteratively using inductive thematic analysis and narrative story analysis.SettingCanada-wide study conducted via video conference from October to December 2023.Patients12 participants from five Canadian provinces who self-identified as 18 years of age or older and as having parental lived experience with cytomegalovirus (CMV) or cCMV participated in the study.ResultsWe identified three themes: (1) attitudes about UNS for cCMV, including participants’ unanimous support for UNS and confirmation that parental anxiety is not a deterrent for screening, (2) cCMV diagnosis, including the importance of coupling cCMV diagnosis with access to treatment and medical support and (3) awareness of cCMV, where participants shared their frustration about the lack of public and pregnant people’s awareness of cCMV.ConclusionsParental anxiety is not a deterrent for UNS for cCMV. Children with cCMV and their families deserve every opportunity to attain their best possible outcomes. UNS offers children with cCMV access to early intervention if they need it, and also helps to raise awareness and education to prevent future CMV infections.

Current mental health disorder rates for preadolescent and adolescent girls demonstrate a disturbing trend, most notably a drastic increase in reports of non-suicidal self-injury (NSSI), especially in the age category of 10- to 14-year-olds. NSSI has become normalized in the adolescent population, and social contagion—the spreading of NSSI through peer and media influence—has become a significant concern. This article defines and discusses NSSI and social contagion and explores why preadolescent and adolescent girls may be particularly vulnerable to it. Further, current Canadian approaches to mental health promotion and primary prevention are reviewed, and an argument is made for the development and implementation of elementary school–based, gender-specific, comprehensive mental health programs. Incorporating interconnected evidence-based protective factors such as self-worth, self-compassion, emotion regulation, healthy relationships, communication, and family and school systems will provide young girls with valuable skills and knowledge to mitigate their engagement with NSSI and to resist social contagion.

Les taux actuels de troubles de santé mentale chez les préadolescentes et adolescentes mettent en évidence une tendance inquiétante, notamment une hausse importante des cas d'automutilation non suicidaire, surtout dans la catégorie des 10 a 14 ans. Ce phénomene se normalise dans la population adolescente, et la contagion sociale, c'esta-dire la progression des cas d'automutilation non suicidaire en raison de l'influence des pairs et des médias, est aujourd'hui un grave probleme. Cet article définit et décrit l'automutilation non suicidaire et la contagion sociale et examine pourquoi les préadolescentes et les adolescentes peuvent y étre particulierement vulnérables. L'article passe aussi en revue les approches actuelles de promotion de la santé mentale et de prévention primaire au Canada et fait valoir l'importance d'élaborer et de mettre en œuvre des programmes de santé mentale sexospécifiques complets a l'école primaire. Ľintégration de facteurs de protection interconnectés fondés sur des données probantes, tels que l'estime de soi, la maîtrise des émotions, les relations saines, la communication, et les systemes familiaux et scolaires permettront aux jeunes filles d'acquérir les aptitudes et les connaissances nécessaires pour limiter leur adhésion a des pratiques d'automutilation non suicidaire et résister a la contagion sociale.

Northern corn leaf blight (NCLB) is an important leaf disease in maize ( Zea mays) worldwide and is spreading into new areas with expanding maize cultivation, like Germany. Exserohilum turcicum , causal agent of NCLB, infects and colonizes leaf tissue and induces elongated necrotic lesions. Disease control is based on fungicide application and resistant cultivars displaying monogenic resistance. Symptom expression and resistance mechanisms differ in plants carrying different resistance genes. Therefore, histological studies and DNA quantification were performed to compare the pathogenesis of E. turcicum races in maize lines exhibiting compatible or incompatible interactions. Maize plants from the differential line B37 with and without resistance genes Ht1, Ht2, Ht3 , and Htn1 were inoculated with either incompatible or compatible races (race 0, race 1 and race 23N) of E. turcicum . Leaf segments from healthy and inoculated plants were collected at five different stages of infection and disease development from penetration (0–1 days post inoculation - dpi), until full symptom expression (14–18 dpi). Symptoms of resistance responses conveyed by the different Ht genes considerably differed between Ht1 (necrotic lesions with chlorosis), Ht2 (chlorosis and small lesions), Ht3 (chlorotic spots) and Htn1 (no lesions or wilt-type lesions). In incompatible interactions, fungal DNA was only detected in very low amounts. At 10 dpi, DNA content was elevated in all compatible interactions. Histological studies with Chlorazol Black E staining indicated that E. turcicum formed appressoria and penetrated the leaf surface directly in both types of interaction. In contrast to incompatible interactions, however, the pathogen was able to penetrate into xylem vessels at 6 dpi in compatible interactions and strongly colonized the mesophyll at 12 dpi, which is considered the crucial process differentiating susceptible from resistant interactions. Following the distinct symptom expressions, resistance mechanisms conferred by Ht1, Ht2, Ht3 , and Htn1 genes apparently are different. Lower disease levels and a delayed progress of infection in compatible interactions with resistant lines imply that maize R genes to E. turcicum are associated with or confer additional quantitative resistance.

The major histocompatibility complex (MHC) is a group of genes comprising one of the most important components of the vertebrate immune system. Consequently, there has been much interest in characterising MHC variation and its relationship with fitness in a variety of species. Due to the exceptional polymorphism of MHC genes, careful PCR primer design is crucial for capturing all of the allelic variation present in a given species. We therefore developed intronic primers to amplify the full-length 267 bp protein-coding sequence of the MHC class II DQB exon 2 in the Antarctic fur seal. We then characterised patterns of MHC variation among mother–offspring pairs from two breeding colonies and detected 19 alleles among 771 clone sequences from 56 individuals. The distribution of alleles within and among individuals was consistent with a single-copy, classical DQB locus showing Mendelian inheritance. Amino acid similarity at the MHC was significantly associated with genome-wide relatedness, but no relationship was found between MHC heterozygosity and genome-wide heterozygosity. Finally, allelic diversity was several times higher than reported by a previous study based on partial exon sequences. This difference appears to be related to allele-specific amplification bias, implying that primer design can strongly impact the inference of MHC diversity.

Northern Corn Leaf Blight (NCLB) is a fungal leaf disease in maize caused by Exserohilum turcicum. NCLB occurs worldwide, from tropical to temperate zones raising the question about plasticity of temperature adaptation of local isolates of the pathogen. Seven isolates of E. turcicum originating from South America and seven from Europe were compared for their response to temperature variations in vitro and in vivo between 15 and 30 °C. In vitro, isolates originating from Europe and South America significantly differed in mycelial growth rate at 30 °C and in sporulation at 25 °C and 30 °C. Aggressiveness of E. turcicum isolates was evaluated on three susceptible maize cultivars (maize lines B37, Sus1 and the German hybrid Niklas) under different day/night temperature regimes (15/10 °C, 20/15 °C, 25/20 °C, or 30/25 °C) with a photoperiod of 14 h. Aggressiveness, recorded as area under the disease progress curve (AUDPC), of South American isolates was higher than for European isolates at 15 °C, 20 °C and 25 °C, and for sporulation in vivo in all temperatures. In general, aggressiveness components were most influenced by temperature. Therefore, multivariate analysis was performed with aggressiveness component data at 30 °C, which expressed the highest number of variables with significant differences between isolate origins. According to their aggressiveness, European and South American isolates can be grouped separately, demonstrating that South American isolates are better adapted to higher temperatures and display a higher level of aggressiveness under similar conditions than European isolates from a cool climate. It is concluded that plasticity of temperature adaptation in E. turcicum populations is relatively large and allowed E. turcicum to follow the recent expansion of maize cultivation into cool climate zones in Europe. However, our data suggest that adaptation to higher temperature is likely to increase aggressiveness of NCLB on maize in cooler climate zones when experiencing further climate warming. This plasticity in adaptation to environmental conditions of E. turcicum may also hamper the success of breeding programs as it may decrease the durability of resistance.

Glaucoma is a neurodegenerative disease that affects the retinal ganglion cells (RGCs). The main risk factor is elevated intraocular pressure (IOP), but the actual cause of the disease remains unknown. Emerging evidence indicates that metabolic dysfunction plays a central role. The aim of the current study was to determine and compare the effect of universal hypoxia on the metabolomic signature in plasma samples from healthy controls (n = 10), patients with normal-tension glaucoma (NTG, n = 10), and ocular hypertension (OHT, n = 10). By subjecting humans to universal hypoxia, we aim to mimic a state in which the mitochondria in the body are universally stressed. Participants were exposed to normobaric hypoxia for two hours, followed by a 30 min recovery period in normobaric normoxia. Blood samples were collected at baseline, during hypoxia, and in recovery. Plasma samples were analyzed using a non-targeted metabolomics approach based on liquid chromatography coupled with high-resolution mass spectrometry (LC-HRMS). Multivariate analyses were conducted using principal component analysis (PCA) and orthogonal partial least squares-discriminant analysis (OPLS-DA), and univariate analysis using the Wilcoxon signed-rank test and false discovery rate (FDR) correction. Unique metabolites involved in fatty acid biosynthesis and ketone body metabolism were upregulated, while metabolites of the kynurenine pathway were downregulated in OHT patients exposed to universal hypoxia. Differential affection of metabolic pathways may explain why patients with OHT initially do not suffer or are more resilient from optic nerve degeneration. The metabolomes of NTG and OHT patients are regulated differently from control subjects and show dysregulation of metabolites important for energy production. These dysregulated processes may potentially contribute to the elevation of IOP and, ultimately, cell death of the RGCs.

We present a global atlas of downcore foraminiferal oxygen and carbon isotope ratios available at https://doi.org/10.1594/PANGAEA.936747 (Mulitza et al., 2021a). The database contains 2106 published and previously unpublished stable isotope downcore records with 361 949 stable isotope values of various planktic and benthic species of Foraminifera from 1265 sediment cores. Age constraints are provided by 6153 uncalibrated radiocarbon ages from 598 (47 %) of the cores. Each stable isotope and radiocarbon series is provided in a separate netCDF file containing fundamental metadata as attributes. The data set can be managed and explored with the free software tool PaleoDataView. The atlas will provide important data for paleoceanographic analyses and compilations, site surveys, or for teaching marine stratigraphy. The database can be updated with new records as they are generated, providing a live ongoing resource into the future.