6 research outputs found

    Variability in Militia and Regular Army Refuse Disposal Patterns at Fort Meigs: A Fortified War of 1812 Encampment on the Maumee River in Northern Ohio

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    During the fall of 1812, Fort Meigs was built on a bluff along the south side of the Maumee River, Ohio, to serve as a forward supply base and to provide protection to the expeditionary force preparing to advance against Fort Malden. The completed fortification included batteries, blockhouses, and a connecting parapet and palisade. Three groups of Americans (federal army, militia, and volunteers) resided at Fort Meigs during its construction, usage as a base camp and forward-supply depot, and its defense. Members of these groups came from a range of socioeconomic classes. This article seeks to elucidate any qualitative differences in the behavior and refuse-disposal patterns among the three categories of soldier at Fort Meigs: militia and volunteers, enlisted men, and officers, and how disposal patterns reflect then-extant military culture. It should be possible to relate the forms of material culture discovered in contexts other than sinks (also known as primary, secondary, and de facto disposal types) (Schiffer 1972), to the actions of the three categories of soldiers

    miRNA expression profiling of 51 human breast cancer cell lines reveals subtype and driver mutation-specific miRNAs

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    INTRODUCTION: Breast cancer is a genetically and phenotypically complex disease. To understand the role of miRNAs in this molecular complexity, we performed miRNA expression analysis in a cohort of molecularly well-characterized human breast cancer cell lines to identify miRNAs associated with the most common molecular subtypes and the most frequent genetic aberrations. METHODS: Using a microarray carrying LNA™ modified oligonucleotide capture probes), expression levels of 725 human miRNAs were measured in 51 breast cancer cell lines. Differential miRNA expression was explored by unsupervised cluster analysis and was then associated with the molecular subtypes and genetic aberrations commonly present in breast cancer. RESULTS: Unsupervised cluster analysis using the most variably expressed miRNAs divided the 51 breast cancer cell lines into a major and a minor cluster predominantly mirroring the luminal and basal intrinsic subdivision of breast cancer cell lines. One hundred and thirteen miRNAs were differentially expressed between these two main clusters. Forty miRNAs were differentially expressed between basal-like and normal-like/claudin-low cell lines. Within the luminal-group, 39 miRNAs were associated with ERBB2 overexpression and 24 with E-cadherin gene mutations, which are frequent in this subtype of breast cancer cell lines. In contrast, 31 miRNAs were associated with E-cadherin promoter hypermethylation, which, contrary to E-cadherin mutation, is exclusively observed in breast cancer cell lines that are not of luminal origin. Thirty miRNAs were associated with p16(INK4 )status while only a few miRNAs were associated with BRCA1, PIK3CA/PTEN and TP53 mutation status. Twelve miRNAs were associated with DNA copy number variation of the respective locus. CONCLUSION: Luminal-basal and epithelial-mesenchymal associated miRNAs determine the subdivision of miRNA transcriptome of breast cancer cell lines. Specific sets of miRNAs were associated with ERBB2 overexpression, p16(INK4a )or E-cadherin mutation or E-cadherin methylation status, which implies that these miRNAs may contribute to the driver role of these genetic aberrations. Additionally, miRNAs, which are located in a genomic region showing recurrent genetic aberrations, may themselves play a driver role in breast carcinogenesis or contribute to a driver gene in their vicinity. In short, our study provides detailed molecular miRNA portraits of breast cancer cell lines, which can be exploited for functional studies of clinically important miRNAs

    Effects of Drugs on Chloroplasts

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