Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA105677 | ENA |
REPOSITORIES: ENA
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Project description:The goal of this study was to analyse the effect of a 12 weeks treatment with rosiglitazone on insulin sensitivity in the muscle of type 2 diabetic patients. Ten diabetic patients were submitted to a 3 hours euglycemic-hyperinsulinemic clamp. Skeletal muscle biopsies were taken before and after the clamp. Samples from the same patients (obtained before and after the clamp) were hybridized on the same microarray. Biopsie taken before the clamp was considered as the control. Then, the patients were treated with rosiglitazone, agonist of PPAR gamma, during 12 weeks. After the treatment, all the patients were submitted to a second 3 hours euglycemic-hyperinsulinemic clamp. Skeletal muscle biopsies for 7 patients were taken before and after the clamp. Samples from the same patients (obtained before and after the clamp) were hybridized on the same microarray. Biopsie taken before the clamp was considered as the control. Set of arrays that are part of repeated experiments Compound Based Treatment: patient biopsies taken before (no) and after (yes) rosiglitazone (TZD) treatment`
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Project description:6 lean humans were submitted to a 3 hours hyperinsulinemic-euglycemic clamp. Skeletal muscle biopsies were taken before and after the clamp. Set of arrays that are part of repeated experiments
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Project description:To identify insulin responsive genes in humans, in the first protocol, skeletal muscle biopsies from six non-diabetic subjects were obtained before and after a two-hour of hyperinsulinaemic (infusion rate 40 mU/m2/min) euglycemic clamp. A variable infusion of glucose (180 g/l) enriched with tritiated glucose (100 μCi/500 ml) maintained euglycemia during insulin infusion, with monitoring of plasma glucose concentration every 5 to 10 min during the basal and clamp periods using an automated glucose oxidation method (Glucose Analyzer 2, Beckman Instruments, Fullerton, CA). In the second protocol, skeletal muscle biopsies from six non-diabetic subjects were obtained before and after a 3-hour hyperinsulinemic (infusion rate 40 mU/m2/min) euglycemic clamp in order to increase the effects of insulin on gene expression. A variable infusion of glucose (180 g/l) was used to maintain euglycemia during insulin infusion with monitoring of plasma glucose concentration every 5 to 10 min using an automated glucose oxidation method (Glucose Analyzer 2, Beckman Instruments, Fullerton, CA). Keywords: dose response The muscle biopsies were obtained from the vastus lateralis muscle under local anesthesia before and after hyperinsulinaemic (infusion rate 40 mU/m2/min) euglycemic clamp
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Project description:Cellular and tissue defects associated with insulin resistance are coincident with transcriptional abnormalities and are improved after insulin sensitization with thiazolidinedione (TZD) PPAR? ligands. We transcriptionally profiled 364 biopsies gathered from 72 human subjects harvested before and after hyperinsulinemic-euglycemic clamp, at baseline and after three-month TZD treatment. Subjects range from insulin-sensitive to insulin-resistant. Insulin resistant subjects responded to TZD treatment with varied improvements in insulin sensitivity, thus they were ranked by their degree of TZD response to define responder and non-responder subgroups. Skeletal muscle biopsies were obtained from vastus lateralis before and after hyperinsulinemic-euglycemic clamp, at baseline and after three-month TZD treatment. Adipose tissue biopsies were obtained from abdominal subcutaneous before clamp, at baseline and after three-month TZD treatment. *** CEL files not provided for 40 Samples. ***
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Project description:To identify insulin responsive genes in humans, in the first protocol, skeletal muscle biopsies from six non-diabetic subjects were obtained before and after a two-hour of hyperinsulinaemic (infusion rate 40 mU/m2/min) euglycemic clamp. A variable infusion of glucose (180 g/l) enriched with tritiated glucose (100 μCi/500 ml) maintained euglycemia during insulin infusion, with monitoring of plasma glucose concentration every 5 to 10 min during the basal and clamp periods using an automated glucose oxidation method (Glucose Analyzer 2, Beckman Instruments, Fullerton, CA). In the second protocol, skeletal muscle biopsies from six non-diabetic subjects were obtained before and after a 3-hour hyperinsulinemic (infusion rate 40 mU/m2/min) euglycemic clamp in order to increase the effects of insulin on gene expression. A variable infusion of glucose (180 g/l) was used to maintain euglycemia during insulin infusion with monitoring of plasma glucose concentration every 5 to 10 min using an automated glucose oxidation method (Glucose Analyzer 2, Beckman Instruments, Fullerton, CA). Keywords: dose response
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