Frequent hemodialysis is associated with improvement in myocardial mechanics and cardiac gene expression profile
Impact of frequent nocturnal hemodialysis on myocardial mechanics and cardiomyocyte gene expression.
Age, Specimen part
View SamplesNocturnal home hemodialysis (NHD) [5 6 times a week, 6-8 hours per session] augments uremia clearance and is associated with an increase in hemoglobin level. We have used microarray to have a global image of the changes at the gene expression.
Nocturnal hemodialysis improves erythropoietin responsiveness and growth of hematopoietic stem cells.
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View SamplesTwo different mouse models of cardiac-specific ILK expression (ILKS343D and ILKR211A) were used to investigate the role of ILK in cardiac regeneration
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Sex, Specimen part
View SamplesThe endogenous peptide Apelin is crucial for maintaining heart function in pressure overload and aging
Impaired heart contractility in Apelin gene-deficient mice associated with aging and pressure overload.
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View SamplesRight ventricular samples were serially acquired during surgical repair of ventricular septal defect. Expression profiling revealed three patterns of gene expression: (1) increased expression above control levels within one hour of cardioplegic arrest, with further amplification during early reperfusion; (2) increased expression limited to the reperfusion phase; and (3) reduced expression during reperfusion.
Early gene expression profiles during intraoperative myocardial ischemia-reperfusion in cardiac surgery.
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View SamplesC57BL/6 Male mice were treated with high fat diet at the age of 8 weeks and continue the diet for 16 weeks(4 mo) and then injected them with placebo/drug for 1 week before scarifice. Their were sacrifised at the age of 6 months.
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Sex
View SamplesMurine 3T3-L1 progenitor adipocytes cell cultures, treated and untreated (Control) with resveratrol before the induction of differentiation and the effects on adipogenesis and insulin signaling was investigated.
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View SamplesSystemic arterial smooth muscle cells are exposed to a broad range of oxygen concentrations under physiological conditions. Hypoxia can modulate the proliferative response of smooth muscle cells leading to speculation about its role in vasculogenesis, vascular remodelling and the pathogenesis of arterial disease. The effect of hypoxia has been inconsistent, however, with both enhanced proliferation and growth arrest reported. Nevertheless, these reports support an important effect of hypoxia on smooth muscle cell proliferation and, given its physiological and clinical relevance, this requires clarification. We posited that variation in O2 concentration, within the range that exists in vivo, may have different effects on the proliferation and survival of vascular smooth muscle cells.
Oxygen regulation of arterial smooth muscle cell proliferation and survival.
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View SamplesHere, we investigated whether prenatal exposure to nicotine alters kidney glomerular mass and genome-wide gene expression profiles in two genetically distant strains of rats, namely spontaneously hypertensive rats (SHR) and Brown Norway (BN) rats. Nicotine or saline were administered to BN and SHR dams via osmotic pumps throughout gestation. Kidneys from 9-week-old male offspring were studied.
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Sex, Age, Specimen part, Treatment
View SamplesCritical disease caused by the new 2009 pandemic influenza virus (nvH1N1) is a challenge for physicians and scientist. As evidenced in SARS and H5N1, the development of an effective immune response plays a key role to overcome viral diseases. We studied host`s gene expression signatures, cytokine and antibody responses along the first week of hospitalization in 19 critically ill patients with primary nvH1N1 pneumonia and two degrees of respiratory involvement. Presence of comorbidities and absence of immunosuppresory conditions were the common antecedents in both groups. The most severe patients (n=12) showed persistant respiratory viral secretion, increased levels of pro-inflammatory cytokines and chemokines in serum, and elevated systemic levels of two immunosuppresory cytokines (IL-10 and IL-1ra). Both groups were able to produce specific antibodies against the virus. The average day for antibody production was day 9 in the course of the disease, defining an early period of innate immunity and a late period of adaptive immunity. The most severe group evidenced a poor expression of a set of MHC class II and T cell receptor (TCR) related genes participating in antigen presentation and cell mediated immune responses in the late phase. 7 patients of this group finally died. This findings evidence that, as observed in sepsis, severe H1N1 disease course with immunoparalysis, which could explain the poor control of the virus along with the increased incidence of bacterial superinfection observed in these patients.
Host adaptive immunity deficiency in severe pandemic influenza.
Specimen part, Subject
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