HIV Tg rats exhibit pulmonary hypertension and pulmonary artery remodeling. In an effort to begin to understand cell signaling pathways which are altered in lungs from HIV transgenic rats, we used microarray analysis.
Human immunodeficiency virus transgenic rats exhibit pulmonary hypertension.
Sex, Age, Specimen part
View SamplesAcute lung inflammation can alter the pulmonary function of susceptible individuals and exacerbate the pathogenesis of chronic inflammatory lung diseases including chronic obstructive pulmonary disease (COPD), cystic fibrosis and asthma. Exposure to lipopolysaccharide (LPS) or endotoxin, a constituent of outer cell membrane of gram negative bacteria, induces airway inflammation that is primarily characterized by increased polymorphonuclear neutrophils (PMNs) at early time points. Because LPS is present in variety of occupational and home environments and is an active constituent of cigarette smoke it is a risk factor for increasing prevalence and severity of non-occupational COPD, for adult onset of asthma and for wheezing in children. In airway epithelial cells, LPS stimulation increases mucin gene expression and mucous production. Hypersecretion of mucus overwhelms the ciliary clearance and obstructs airways, causing morbidity and mortality in chronic inflammatory respiratory lung diseases. In addition, acute bacterial infection contributes to the exacerbation of chronic airway diseases, specifically in advanced COPD and CF subjects, leading to increased healthcare burden and higher mortality. Bcl-2, a prosurvival protein that inhibits cell death plays a key role in normal cellular homeostasis and regulates the integrity of the mitochondrial and endoplasmic reticulum membranes. Gain- and loss-of-function studies showed that Bcl-2 expression sustains hyperplastic epithelial cells, and Bcl-2 expression is elevated in airway epithelial cells of subjects with cystic fibrosis and asthma. The present study investigated which inflammatory mediators induce mucous cell metaplasia and Bcl-2 expression following LPS exposure. Microarray analyses of mRNA from airway epithelial cells captured by laser microdissection from rat lungs snap-frozen at day 0 and 2 post LPS exposure were analyzed.
Intracellular insulin-like growth factor-1 induces Bcl-2 expression in airway epithelial cells.
Sex
View SamplesCentral memory CD4 T cells (TCM) have a critical homeostatic role in chronic HIV infection. We asked if TCM cells from HIV+ patients have a gene expression profile related with less proliferation and less survival capacities.
No associated publication
Specimen part, Disease stage
View SamplesBiological functions of LncRNAs and their protential target protein-coding genes in the pathogenesis of COPD.
No associated publication
Sex, Age, Specimen part, Cell line
View SamplesTranscriptome of P. aeruginosa (PAG)
No associated publication
Specimen part, Cell line
View SamplesPAM-T
No associated publication
Specimen part, Cell line
View SamplesIdiopathic pulmonary fibrosis (IPF) is a progressive lethal interstitial lung disease of unkown etiology with limited effective therapies. The pathogenic mechanisms of IPF remain unkown. Emerging evidences indicate that abnormal behaviors of fibroblasts in IPF are associated with a variety of genetic alterations and aberrant reactivation of developmental signaling pathways.
No associated publication
Specimen part, Disease
View SamplesThis SuperSeries is composed of the SubSeries listed below.
No associated publication
Sex, Age, Treatment, Race
View SamplesThe objective of this study was to examine relationships between weight loss through changes in lifestyle and peripheral blood gene expression profiles. Substantial weight loss (-15.2+3.8%) in lifestyle participants was associated with improvement in selected cardiovascular risk factors and significant changes in peripheral blood gene expression from pre- to post-intervention: 132 unique genes showed significant expression changes related to immune function and inflammatory responses involving endothelial activation.
Importance of substantial weight loss for altering gene expression during cardiovascular lifestyle modification.
Sex, Age, Specimen part
View SamplesBackground: Obesity is a risk factor for breast cancer in postmenopausal women and is associated with decreased survival and less favorable clinical characteristics such as greater tumor burden, higher grade, and poor prognosis, regardless of menopausal status. Despite the negative impact of obesity on clinical outcome, molecular mechanisms through which excess adiposity influences breast cancer etiology are not well-defined.
Effect of obesity on molecular characteristics of invasive breast tumors: gene expression analysis in a large cohort of female patients.
Disease stage
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