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Endothelial cells present an innate resistance to glucocorticoid treatment: implications for therapy of primary vasculitis

ABSTRACT: Morphogenesis of epithelial tissues relies on the precise developmental control of cell polarity and architecture. In the early Drosophila embryo, the primary epithelium forms during cellularisation, following a tightly controlled genetic programme where specific sets of genes are up-regulated. Some of them, for instance, control membrane invagination between the nuclei anchored at the apical surface of the syncytium. Huvec were treated for 4h and 16h with dexamethasone. Two independent experiments.

ORGANISM(S): Homo sapiens

SUBMITTER: Dorothee Viemann

PROVIDER: E-GEOD-25269 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Endothelial cells present an innate resistance to glucocorticoid treatment: implications for therapy of primary vasculitis

Project description:Morphogenesis of epithelial tissues relies on the precise developmental control of cell polarity and architecture. In the early Drosophila embryo, the primary epithelium forms during cellularisation, following a tightly controlled genetic programme where specific sets of genes are up-regulated. Some of them, for instance, control membrane invagination between the nuclei anchored at the apical surface of the syncytium.

2011-11-10 | GSE25269 | GEO

Expression data from CC10-rtta/teton-IL-13 tg mice fed with or without doxycycline

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Expression data from CC10-rtta/teton-IL-13 tg mice fed with or without doxycycline

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Expression data from early Drosophila embryo

Project description:Morphogenesis of epithelial tissues relies on the precise developmental control of cell polarity and architecture. In the early Drosophila embryo, the primary epithelium forms during cellularisation, following a tightly controlled genetic programme where specific sets of genes are up-regulated. Some of them, for instance, control membrane invagination between the nuclei anchored at the apical surface of the syncytium. We used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated genes during this process. Keywords: time course

2006-01-01 | GSE3955 | GEO

Transcription profiling of mouse uteri after ovariectomy and DHT treatment.

Project description:Morphogenesis of epithelial tissues relies on the precise developmental control of cell polarity and architecture. In the early Drosophila embryo, the primary epithelium forms during cellularisation, following a tightly controlled genetic programme where specific sets of genes are up-regulated. Some of them, for instance, control membrane invagination between the nuclei anchored at the apical surface of the syncytium. We study the whole genome expression profile aftre DHT treatment in the uteri of gonadectomized mouse. Experiment Overall Design: Ten 10-11 weeks old C57Bl/6 mice were gonadectomized under isoflurane-induced anesthesia and sacrified seven days after GDX. Mice were injected s.c with DHT (0.1mg/mice) or vehicle, at 0.5, 1, 3, 6, 12 or 24 h before sacrifice. Uteri was removed and pooled before total RNA extraction. Samples was hybridized to U74Av2 Genechips (Affymetrix).

2008-10-18 | E-GEOD-6237 | biostudies-arrayexpress

Transcription profiling of Drosophila melanogaster at multiple developmental stages to examine morphogenesis of epithelial tissue

Project description:Morphogenesis of epithelial tissues relies on the precise developmental control of cell polarity and architecture. In the early Drosophila embryo, the primary epithelium forms during cellularisation, following a tightly controlled genetic programme where specific sets of genes are up-regulated. Some of them, for instance, control membrane invagination between the nuclei anchored at the apical surface of the syncytium. We used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated genes during this process. Experiment Overall Design: Drosophila embryos were selected at successive stages of early development for RNA extraction and hybridization on Affymetrix microarrays. We sought to obtain homogeneous populations of embryos at each developmental stage in order to increase the temporal resolution of expression profiles. To that end, we hand-selected embryos according to morphological criteria at five time-points: before pole cell formation, i.e. before zygotic transcription (T0), during the slow phase (T1) and the fast phase (T2) of cellularisation and at the beginning (T3) and the end (T4) of gastrulation.

2007-10-31 | E-GEOD-3955 | biostudies-arrayexpress

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Apyrase-mediated amplification of secretory IgA promotes intestinal homeostasis

Project description:Morphogenesis of epithelial tissues relies on the precise developmental control of cell polarity and architecture. In the early Drosophila embryo, the primarSecretory IgA (SIgA) interaction with commensal bacteria regulates the composition and function of the microbiota, contributing to gut ecosystem homeostasis. However, mechanisms regulating the reciprocal control of microbiota and SIgA are not defined. Bacteria-derived ATP limits T follicular helper (Tfh) cells activity in the Peyer’s patches (Pps) of the small intestine via the P2X7 receptor and thereby SIgA generation. Here we show that inhibition of bacteria derived ATP signaling by delivery of the ATP-degrading enzyme apyrase to the intestine results in the amplification of the SIgA repertoire. The enhanced breadth of SIgA in mice colonized with apyrase-releasing E. Coli conditioned topographical distribution of bacteria and expression of genes involved in metabolic versus immune functions in the intestinal epithelium. SIgA mediated conditioning of bacteria and enterocyte function was also reflected by selective differences in nutrients absorption in mice colonized with apyrase expressing bacteria. Hydrolysis of bacteria derived ATP was particularly helpful in restoring intestinal homeostasis via SIgA in antibiotics induced dysbiosis. Administration of apyrase expressing bacteria attenuated intestinal barrier impairment, glucose metabolism perturbation and susceptibility to infection by enteric pathogens induced by antibiotic treatments. Therefore, microbiota derived ATP regulates SIgA, and amplification of SIgA response by apyrase can be leveraged to restore intestinal fitness in dysbiotic conditions.y epithelium forms during cellularisation, following a tightly controlled genetic programme where specific sets of genes are up-regulated. Some of them, for instance, control membrane invagination between the nuclei anchored at the apical surface of the syncytium.

2022-07-13 | GSE203433 | GEO

A Review of IgA Vasculitis (Henoch-Schonlein Purpura) Past, Present, and Future.

Project description:The clinical association of purpura, arthralgia, and arthritis was first described in 1837 in a publication by Johann Lukas Schönlein, a German physician. In 1874, Eduard Henoch, a student of Schönlein, reported cases of children with purpura, abdominal pain, bloody diarrhea, and joint pain. IgA vasculitis, or Henoch-Schönlein purpura, is a systemic hypersensitivity vasculitis caused by the deposition of immune complexes in small blood vessels, including the renal glomeruli and mesangium. In the skin, the presentation is with non-thrombocytopenic purpura or urticaria. Worldwide, IgA nephropathy is the most common cause of primary glomerulonephritis. Detection of IgA deposition in small blood vessels and the renal glomeruli is diagnostic in most cases. This article aims to review the history, current classification, epidemiology, presentation, and diagnosis of IgA vasculitis and nephropathy, disease associations or trigger factors, including infections, vaccines, and therapeutic agents, and highlights some future approaches to improve diagnosis and clinical management.

| S-EPMC10832303 | biostudies-literature

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