Find Datasets from
UMB Researchers
of 2 Next >
Results Found: 13
  • Dynamics of the Gut Microbiome in Shigella-Infected Children During the First Two Years of Life
    UMB Dataset

    Authors
    Esther Ndungo
    Johanna B. Holm
    Syze Gama
    Andrea G. Buchwald
    4 more author(s)...
    Description

    This dataset was used to overview the taxonomic composition of the gastrointestinal microbiomes during the first two years of life with the intent to better understand the effects of the invasive pathogen, Shigella. Data was collected through a two year longitudinal study of a mother-infant cohort in Malawi, using 16S rRNA amplicon sequencing to characterize the gastrointestinal microbiota. Rectal swab samples were collected every 6 six months during well-child visits or when an infant visiting the clinic presented diarrhea to diagnose Shigella infection. 16S rRNA gene amplicon libraries yielded an average of 23,720 reads per sample with a total of 8,729,027 reads and a total of 325 taxa were identified after quality filtering.

    Subject
    Gastrointestinal Microbiome
    Genomics
    Shigella
    Geographic Coverage
    International
    Access Rights
    Unrestricted access
  • Neuropeptide identification using eyestalk-RNAseq of red deep-sea crab, Chaceon quenquedens
    UMB Dataset

    Authors
    Shadaesha Green
    Tsvetan Bachvaroff
    J. Sook Chung
    Description

    This study aimed to understand the role of eyestalk neuropeptides in vitellogenesis. Molt-inhibiting hormone (MIH) and crustacean hyperglycemic hormone (CHH) cDNA sequences were first isolated from the eyestalk ganglia of C. quinquedens using traditional cloning methods and their expression was quantified in the eyestalk ganglia at various ovarian stages. De novo transcriptome assembly of the eyestalk ganglia was conducted to determine if transcripts of other neuropeptides differ by ovarian stages. Samples were collected from the mid-Atlantic Bight region of the United States off the coast of Virginia up to Massachusetts between 2013 and 2015.

    Subject
    Brachyura/genetics
    Invertebrate Hormones/genetics
    Neuropeptides
    Geographic Coverage
    United States
    Access Rights
    Unrestricted access
  • Identifying enhancer properties associated with genetic risk for complex traits using regulome-wide association studies
    UMB Dataset

    Authors
    Alex M. Casella
    Carlo Colantuoni
    Seth A. Ament
    Description

    This study introduces a novel application of the MAGMA (Multi-marker Analysis of GenoMic Annotation) software tool that enables testing for associations between enhancer attributes and risk to determine the enhancer characteristics that are associated with risk for schizophrenia. The study uses the RWAS (Regulome Wide Association Study) framework to first collect enhancer annotations in a tissue relevant to the trait of interest, then identifies specific risk-associated enhancers by aggregating the effects of all SNPs (single nucleotide polymorphisms) that overlap the enhancer’s position in the genome, and finally, tests for associations of enhancer features with disease risk using a regression framework.

    Subject
    Genome-Wide Association Study
    Multifactorial Inheritance
    Access Rights
    Unrestricted access
  • Culture Condition of Bone Marrow Stromal Cells Affects Quantity and Quality of the Extracellular Vesicles
    UMB Dataset

    Authors
    Amanda L. Scheiber
    Cierra A. Clark
    Takashi Kaito
    Masahiro Iwamoto
    3 more author(s)...
    Description

    Extracellular vehicles (EVs) released from bone marrow stromal cells (BMSCs) have been demonstrated to play an important role in their therapeutic actions for various diseases. This study establishes a scalable and reproducible EV manufacturing processes needed to develop successful implementation of EV therapy for patients. Using human BMSCs isolated from nine healthy donors, researchers examined the effects of high-performance culture media that can rapidly expand BMSCs on EV production and quality in comparison with the conventional culture medium.

    Subject
    Cell- and Tissue-Based Therapy/methods
    Access Rights
    Unrestricted access
  • Single-Nucleus RNA-Seq Reveals Dysregulation of Striatal Cell Identity Due to Huntington’s Disease Mutations
    UMB Dataset

    Authors
    Sonia Malaiya
    Marcia Cortes-Gutierrez
    Brian R. Herb
    Sydney R. Coffey
    5 more author(s)...
    Description

    The involvement of specific medium spiny neuro (MSN) subtype and of other striatal cell types remains poorly understood. To gain insight into cell type-specific disease processes, researchers studied the nuclear transcriptomes of 4524 cells from the striatum of a genetically precise knock-in mouse model of the Huntington's Disease (HD) mutation, HttQ175/1. Three 14-month-old and one 15-month-old male mice were used to generate the primary dataset.

    Subject
    Sequence Analysis, RNA
    Geographic Coverage
    International
    Timeframe
    2020
    Access Rights
    Unrestricted access
  • Genotyping Plasmodium falciparum gametocytes using amplicon deep sequencing
    UMB Dataset

    Authors
    Jimmy Vareta
    Natalie A. Horstman
    Matthew Adams
    Karl B. Seydel
    4 more author(s)...
    Description

    A data set of polymorphic regions of the P. falciparum genome was mined to identify a gametocyte genotyping marker. To assess marker resolution, the number of unique haplotypes in the marker region was estimated from 205 Malawian P. falciparum whole genome sequences. Specificity of the marker for detection of mature gametocytes was evaluated using reverse transcription-polymerase chain reaction of RNA extracted from NF54 mature gametocytes and rings from a non-gametocyte-producing strain of P. falciparum. Amplicon deep sequencing was performed on experimental mixtures of mature gametocytes from two distinct parasite clones, as well as gametocyte-positive P. falciparum field isolates to evaluate the quantitative ability and determine the limit of detection of the genotyping approach.

    Subject
    Plasmodium falciparum/genetics
    Access Rights
    Unrestricted access
  • Staphylococcus aureus strain MRSA1, whole genome shotgun sequencing project
    UMB Dataset

    Alternate Title(s)
    Examination of 388 Staphylococcus aureus Isolates from Intensive Care Unit Patients
    Authors
    Timileyin Adedrian
    Stephanie Hitchcock
    Lyndsay M. O’Hara
    Jane M. Michalski
    6 more author(s)...
    Description

    The dataset contains data pertaining to the examination of draft genomes of 388 methicillin-resistant Staphylococcus aureus isolates obtained from intensive care unit patients at three geographically distributed hospitals. The purpose of the study was to determine genomic diversity associated with potential health care worker-associated transmission. Relevant statistics, including linked GenBank and SRA accession numbers for each genome assembly, are included in Table 1 of the associated publication.

    Subject
    Disease Transmission, Infectious
    Intensive Care Units
    Methicillin-Resistant Staphylococcus aureus
    Whole Genome Sequencing
    Geographic Coverage
    Baltimore (Md.)
    United States
    Access Rights
    Unrestricted access
  • Seasonal changes in the expression of insulinlike androgenic hormone (IAG) in the androgenic gland of the Jonah crab, Cancer borealis
    UMB Dataset

    Authors
    Amanda Lawrence
    Shadaesha Green
    Tao Wang
    Tsvetan Bachvaroff
    1 more author(s)...
    Description

    This study aimed to identify the insulin-like androgenic gland factor (IAG) in adult male Jonah crabs as it plays an essential role in sexual maturity. The study also aimed to examine if seasonal changes influence IAG expression in males. The study used the androgenic gland transcriptome to test if eyestalk neuropeptides regulate IAG levels via an endocrine axis between the two endocrine tissues as established in other crustaceans. Understanding the size related-sexual maturity and the seasonal changes in Jonah crab male reproductive activity is critical for sustainable fishery management. The full-length CabIAG sequence is 928 nucleotides long, encoding a 151 amino acid deduced sequence. This gene expression was exclusive in male C. borealis AG. Partial CoDing Sequence (CDS) of cancer borealis Na/K-ATPase alpha subunit mRNA was deposited in the GenBank.

    Subject
    Brachyura
    Sexual Maturation
    Transcriptome
    Geographic Coverage
    United States
    Access Rights
    Unrestricted access
  • Strain-specific alterations in gut microbiome and host immune responses elicited by tolerogenic Bifidobacterium pseudolongum
    UMB Dataset

    Authors
    Bing Ma
    Samuel J. Gavzy
    Vikas Saxena
    Yang Song
    12 more author(s)...
    Description

    To determine strain-specific driving mechanisms of B. pseudolongum UMB-MBP-01, researchers compared it to porcine tropic strain B. pseudolongum ATCC25526 using cell culture and in vivo experimentation and comparative genomic approaches. The data demonstrates that these two strains possess distinct genetic repertoires in carbohydrate assimilation, differential activation signatures and cytokine responses signatures in innate immune cells, and differential effects on lymph node morphology with unique local and systemic leukocyte distribution.

    Subject
    Immunity
    Access Rights
    Unrestricted access
  • Relative contributions of various endogenous and exogenous factors to the mosquito microbiota
    UMB Dataset

    Authors
    Haikel N. Bogale
    Matthew V. Cannon
    Kalil Keita
    Denka Camara
    10 more author(s)...
    Description

    Researchers used a high-throughput sequencing-based assay to characterize the bacterial composition and diversity of 665 individual field-caught mosquitoes, as well as their species, genotype at an insecticide resistance locus, blood-meal composition, and the eukaryotic parasites and viruses they carry. This data was used to rigorously estimate the individual effect of each parameter on the bacterial diversity as well as the relative contribution of each parameter to the microbial composition.

    Subject
    Pest Control, Biological
    Access Rights
    Unrestricted access