1169 results for "NHMRC+youth+mental+health+evaluation+2010..2025+Australia"

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• Multiomic spatial landscape of innate immune cells at central nervous system borders

  The innate immune compartment of the human central nervous system (CNS) is highly diverseand includes several immune cell populations such as macrophages that are frequent in the brain parenchyma (microglia) and less numerous at the brain interfaces as CNS-associated macrophages (CAMs).Due to their scantiness and particular location, little is known about the presence of temporally and spatially restricted CAM subclasses during development, health and perturbation. Here, we combined single-cell RNA-sequencing, time-of-flight mass cytometry and single-cell spatial transcriptomics with fate mapping and advanced immunohistochemistry to comprehensively characterize the immune system at human CNS interfaces. We also provide a comprehensive analysis of resident and engrafted myeloid cells in the brains of 15 individuals with peripheral blood stem cell transplantation, revealing compartment-specific engraftment rates across different CNS interfaces... Our results highlight myeloid diversity at the interfaces of the human CNS with the periphery and provide insights into the complexities of the human brain’s immune system.

  Study EGAS50000000030

• Genetic Study of Inflammatory Bowel Disease (IBD) in African Americans

  Association studies have previously identified 200 genome-wide significant (GWS) IBD susceptibility loci in European ancestry populations. At least thirty-five loci have been identified in Asians and a handful appear Asian specific. AAs have a higher risk for developing disease complications in IBD and worse disease outcome, suggesting that significant differences in pathological and molecular mechanisms may exist in AAs. It was therefore imperative to use more comprehensive genotyping platforms in more highly powered samples to detect AA-specific IBD loci and associations. We conducted two independent GWAS using a total of 2345 AA IBD cases and 5002 controls population from unrelated, self-identified AAs individuals. GWAS1 included 1258 IBD cases (843 CD, 368 UC, 47 IBD-U) and 1678 controls derived from the dbGaP Health and Retirement Study (phs000428). GWAS 2 included 1087 IBD cases (803 CD, 215 UC, 69 IBD-U) and 3324 controls obtained from the Kaiser RPGEH study (phs000788).

  Study phs001571

• Mitochondrial Abnormalities in Schizophrenia and Bipolar Disorder

  Mitochondrial DNA structural variation is one proposed indicator of mitochondrial dysfunction. The large common deletion of mitochondrial DNA (mtDNA) increases with aging across multiple brain regions. We found other large deletions of mtDNA in brain at levels comparable to the common deletion (PMID: 30869147). Since mtDNA molecules replicate independently of nuclear division, the mtDNA copy number is a measure of mitochondrial health; levels are negatively correlated with age and all-cause morbidity. Complex I activity is another functional measure of mitochondria. We previously published a subset of this data from DLPFC (PMID: 29594135) for three indicators (common deletion, mtDNA copy number, Complex I activity). For this study, four indicators (common deletion, large deletions, mtDNA copy number, Complex I activity) were measured in four brain regions from subjects with schizophrenia (SZ) and bipolar disorder (BD) and compared to controls. The four brain regions were: the dorsolateral prefrontal cortex, superior temporal gyrus, primary visual cortex (V1), and nucleus accumbens.    

  Study phs002395

• RNA-Seq of PBMC's from rUTI Patients and Healthy Controls

  Recurrent urinary tract infections (rUTIs) are a major health burden worldwide, with history of infection being a significant risk factor. While the gut is a known reservoir for uropathogenic bacteria, the role of the microbiota in rUTI remains unclear. We conducted a year-long study of women with and without history of rUTIs, from whom we collected urine, blood and monthly fecal samples for multi-omic interrogation. The rUTI gut microbiome was significantly depleted in microbial richness and butyrate-producing bacteria compared to controls, reminiscent of other inflammatory conditions, though Escherichia coli gut and bladder dynamics were comparable between cohorts. Blood samples revealed signals of differential systemic immunity, leading us to hypothesize that rUTI susceptibility is in part mediated through a syndrome involving the gut-bladder axis, comprising gut dysbiosis and differential immune response to bacterial bladder colonization, manifesting in symptoms. This work highlights the potential for microbiome therapeutics to prevent and treat rUTIs.  (Reprinted from medrxiv.org ) 

  Study phs002728

• SEER Remote Access Pilot Test Data (2018)

  This is a limited use Surveillance, Epidemiology, and End Results (SEER) file for use in a pilot test of remote data access. The SEER Program of the National Cancer Institute (NCI) is an authoritative source of information on cancer incidence and survival in the United States. SEER currently collects and publishes cancer incidence and survival data from population-based cancer registries covering approximately 34.6 percent of the U.S. population. The SEER Program registries routinely collect data on patient demographics, primary tumor site, tumor morphology and stage at diagnosis, first course of treatment, and follow-up for vital status. The mortality data reported by SEER are provided by the National Center for Health Statistics. The population data used in calculating cancer rates is obtained periodically from the Census Bureau. The SEER research data files include SEER incidence and population data associated by age, sex, race, year of diagnosis, and geographic areas.

  Study phs002012

• Functional Dynamics of the Elderly Gut Microbiome During Probiotic Consumption

  A mechanistic understanding of the health benefits conferred by consumption of probiotic bacteria has been limited by our knowledge of the resident gut microbiota and its interaction with the host. We used fecal samples from a study of twelve healthy individuals aged 65-80 to characterize the structure and functional dynamics of the gut microbiota associated with consumption of the single-organism probiotic, Lactobacillus rhamnosus GG ATCC 53103 (LGG). Samples were collected prior to probiotic consumption (day 0), on day 28 immediately after consuming 10^10 CFU of LGG twice daily for 28 days and day 56, one month after stopping LGG consumption. Our integrative approach incorporated bacterial 16S rRNA gene sequencing, whole-community expression profiling using RNA-seq, and metagenomic sequencing. We highlight the value of combinatorial 'omics methods and concomitant high-resolution informatics to probe the role that probiotics may play on the structure and function of the resident microbiota.

  Study phs000896

• Immune Response to Life-Threatening Respiratory Infections in Children and Young Adults

  This is a cross sectional study describing age-related differences in the nasal mucosal immune response to SARS-CoV-2. We collected nasal mucosal samples from six groups: healthy children, children infected with SARS-CoV-2, children infected with respiratory syncytial virus, children infected with influenza virus, healthy adults, and adults infected with SARS-CoV-2. Samples were obtained by mucosal scrape biopsy of the inferior turbinate using a sterile plastic curette. We performed bulk RNA-sequencing to obtain gene expression data. Clinical data was extracted from the electronic health record including: demographics, medical history, clinical presentation, duration of symptoms, intensive care unit admission, hospital and intensive care unit length of stay, type and duration of respiratory support at sample collection and peak illness. Our analysis described the host response to SARS-CoV-2 in the nasal mucosa in children and adults and compared it to the host response to respiratory syncytial virus and influenza virus.

  Study phs002579

• Genomic Profiling of Melanoma

  This study reports on genomic profiling [whole-exome sequencing (WXS), bulk RNA sequencing (RNA-seq), and/or single-cell RNA sequencing (scRNA-seq)] of patient-derived melanoma samples and matched normal samples. The goal is to elucidate the genetic and cellular basis of sun-exposed and sun-shielded melanomas and to relate these findings to survival and regional metastasis. Specimens were collected by the Tissue Resource Core of the Yale SPORE in Skin Cancer with participants' informed signed consent according to Health Insurance Portability and Accountability Act (HIPAA) regulations with a Human Investigative Committee protocol. The melanomas used for sequencing were from fresh or snap-frozen tumors, or from short-term cell cultures. The cell cultures were routinely checked for mycoplasma contamination and were discarded when found positive. Matching normal DNA was from circulating lymphocytes or normal skin. We also include 77 WES-sequenced samples from the Yale Spitzoid neoplasm repository, which collects specimen and data according to a protocol approved by the Yale Human Investigative Committee.

  Study phs000933

• NHLBI TOPMed: MWCCS: Sex Differences in the Role of Multi-Omics in HIV-Associated Carotid Artery Atherosclerosis

  The MACS-WIHS Combined Cohort Study (MWCCS) is a multicenter prospective cohort study of men and women in the U.S. that aims to understand and reduce the impact of chronic health conditions, including heart, lung, blood, and sleep (HLBS) disorders that affect people living with HIV. MWCCS, which currently has over 5000 active study participants, is designed to investigate a spectrum of questions relating to the basic science, clinical science, and epidemiology of HIV infection in the U.S., with a focus on comorbidities among men and women living with HIV. The current substudy, nested within the MWCCS, integrates detailed metabolomics and proteomics data, among other "omics" measures, to improve the understanding of the etiology of atherosclerosis and cardiovascular disease in women and men with HIV, guide mechanistic studies, and provide insights to more efficient intervention strategies. Data on 374 men are included in the current substudy.

  Study phs003651

• Single cell RNA sequencing of human embryonic forebrain after slice culturing for between four weeks and one month

  With the aim of verifying normal tissue development in our Organotypic Timelapse recording with Transcriptomic Readout (OTTR) live tissue imaging method, we performed single cell RNA sequencing in organotypic slice cultures containing labelled cells from virally delivered ubiquitous Enhanced yellow fluorescent protein (EYFP)-expression. Human fetal cortices of PCW 7.5-10.5 were cut into strips along the dorso-ventral axis and directly placed en face, ventricular side down, on PTFE culturing membranes. To assess tissue health with our culturing method, we performed single cell RNA-seq analysis of the cortical explants (using adjacent slices from the same samples subjected to timelapse imaging). We cultured these control slices for four days in vitro (mimicking the start of a live imaging experiment after lentiviral infection and expression of EYFP), 11 days in vitro (corresponding to the end of one week of live imaging), and for two weeks and one month in vitro.

  Study EGAS50000001185