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Next Generation Sequencing of kidneys 24hours after ischemia-reperfusion injury performed in conscious mice or under anesthesia

ABSTRACT: Next Generation Sequencing of kidneys 24hours after ischemia-reperfusion injury performed in conscious mice or under anesthesia

PROVIDER: PRJNA757791 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15614340.fastq.gz	Fastqsanger.gz
	SRR15614342.fastq.gz	Fastqsanger.gz
	SRR15614343.fastq.gz	Fastqsanger.gz
	SRR15614345.fastq.gz	Fastqsanger.gz
	SRR15614347.fastq.gz	Fastqsanger.gz

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Next Generation Sequencing of kidneys 24hours after ischemia-reperfusion injury performed in conscious mice or under anesthesia

Project description:We study the effect of genereal anesthesia on the transcriptomic changes induced by ischemia-reperfusion injury in the kidney

2021-08-28 | GSE182793 | GEO

Single Cell Chromatin Accessibility Profiling on the mouse kidneys with ischemia-reperfusion injury

Project description:We performed single nucleus ATAC (snATAC-seq) to generate cell-type-specific chromatin accessibility atlas of the mouse kidneys with ischemia-reperfusion injury. The single nucleus RNA-seq of the same samples were previously published (GEO139107)

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Transcriptional analysis of murine kidneys after caloric restriction and hypoxic preconditioning in an ischemia-reperfusion injury model

Project description:Preconditioning strategies like caloric restriction (CR) and hypoxic preconditioning (HP) show remarkable protective effects in animal models of acute kidney injury (AKI). Since the underlying molecular effects are still not fully understood we performed an experiment directly comparing CR and HP in a murine model of ischemia-reperfusion injury (IRI) of the kidney. 8 to 12-week-old, male C57BL6/J mice were either put to 4 weeks of caloric restriction (70% of normal food intake) or placed in a hypoxic chamber (8%O2) for 3 consecutive days prior to IRI. Whole kidneys were used for transcriptional analysis (RNAseq) before and after ischemia-reperfusion injury to look for common effects of both modes of preconditioning.

2019-12-31 | E-MTAB-7982 | biostudies-arrayexpress

Transcription profiling of mouse contralateral kidneys in response to ischemia reperfusion injury

Project description:Current methods to analyze gene expression measure steady-state levels of mRNA. In order to specifically analyze mRNA transcription, a technique has been developed that can be applied in-vivo in intact cells and animals. The technique is referred with the acronym NIAC-NTR (Non Invasive Application and Capture of Newly Transcribed RNA). This method makes use of the cellular pyrimidine salvage pathway and is based on affinity-chromatographic isolation of thiolated mRNA. When combined with data on mRNA steady-state levels, this method is able to assess the relative contributions of mRNA synthesis and degradation/stabilization. It overcomes limitations associated with currently available methods such as mechanistic intervention that disrupts cellular physiology, or the inability to apply the techniques in-vivo. The method was applied to study renal ischemia reperfusion injury, demonstrating its applicability for whole organs in-vivo. Affymetrix GeneChip microarrays were used to detail regulatory mechanisms of mRNA expression and the relative contributions of RNA synthesis and turnover within distinct pathways, and identification of genes expressed at low abundance at the transcriptional level. Experiment Overall Design: The gene expression and regulation program at the RNA level of contralateral mouse kidneys of model IRI-mice was studied. Total RNA, amplified total RNA and specifically enriched newly transcribed RNA was isolated from normal untreated mouse kidneys and from contralateral mouse kidneys of IRI-mice. This experiment allowed detailed regulatory mechanisms in-vivo of mRNA expression and the relative contributions of RNA synthesis and turnover within distinct pathways, and identification of genes expressed at low abundance at the transcriptional level of contralateral kidneys early (3h) after ischemia-reperfusion-injury..

2008-06-15 | E-GEOD-6698 | biostudies-arrayexpress

Proteome analysis of membranes from renal ischemia-reperfusion injury mouse models.

Project description:Ischemia-reperfusion injury (IRI) is a well-known model for acute kidney injury (AKI). We applied proteomic analysis to detect membrane proteins from IRI mouse kidneys. The analysis set are composed of negative control (sham operation), samples of 4-hour after IRI, and samples of 8-hour IRI.

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Transcription profiling of mouse lung to investigate effects of ischemia reperfusion injury or nephrectomy

Project description:Experiments in rodents have shown that kidney ischemia/reperfusion injury (IRI) facilitates lung injury and inflammation. To identify potential ischemia-specific lung molecular pathways involved, we conducted global gene expression profiling of lung 6 or 36 hours following 1) bilateral kidney IRI, 2) bilateral nephrectomy (BNx), and 3) sham laparotomy in C57BL/6J mice. Total RNA from whole lung was isolated and hybridized to 430MOEA (22,626 genes) GeneChips (n=3/group). Experiment Overall Design: All procedures were approved by the Johns Hopkins Animal Care and Use Committee, and were consistent with the National Institutes of Health (NIH) Guide for the Care and Use of Laboratory Animals. Male 6-8 week-old mice (C57BL6/J), weighing approximately 25-30 grams were obtained from Jackson Laboratory (Bar Harbor, ME) and housed under pathogen-free conditions according to NIH guidelines at least five days prior to operative procedures. Experiment Overall Design: Animals were placed on a heating blanket and underwent midline laparotomy with isolation of bilateral renal pedicles. For mice assigned to experimental ischemia-reperfusion injury (IRI), a non-traumatic microvascular clamp was applied across both renal pedicles for 60 minutes. After the allotted ischemia time, the clamps were gently removed, the animals administered 1 ml of sterile saline intraperitoneally, and the incision closed in two layers with 4-0 silk suture. The animals were then allowed to recover with free access to food and water. Sham animals underwent the identical procedure without placement of the vascular clamps. The mice assigned to bilateral nephrectomy (BNx) underwent similar procedures except both renal pedicles were ligated with 5-0 silk suture and the kidneys removed. At 6 or 36 hours following the experimental procedure, the mice were euthanized by exsanguination under pentobarbital anesthesia and lung tissues collected for analysis.

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Proteomic analyses of non-preconditioned murine kidneys pre- and post-IRI in comparison to kidneys after preconditioning by hypoxia or caloric restriction

Project description:12 – 14-week-old male C57Bl6N mice were divided into 3 treatment groups (n=5). First, non-preconditioned animals received ad libitum access to food under a daily 12 hour light and 12 hour dark rhythm with similar specific pathogen free (SPF) conditions in group-cages with up to 5 mice at the same time. Calorically restricted mice obtained 66% of the usual daily intake (3 g per day per mouse) 28 days before surgery as previously described (PMID: 30522767). For the hypoxic preconditioning mice were kept in a hypoxia chamber with a reduction of oxygen to 8.3% for 2 h, 4 h and 8 h on three following days prior to surgery based on the description of Bernaudin et al. (PMID: 11919510). On the day of Ischemia-Reperfusion Injury (IRI) all mice were anesthetized by ketamin (Zoetis (Berlin, Germany))/xylazine (Bayer (Leverkusen, Germany)) and afterwards all mice received a midline abdominal incision as previously described (PMID: 27557097). After ligation of the right kidney vessels right nephrectomy was performed and the kidneys were cut into halves. One half was frozen in liquid nitrogen for proteomic analyses. Then, the left renal vessels were clamped for 40 minutes followed by a subsequent removal of the clamp for reperfusion. The abdominal incision was closed. Subsequently, the mice were placed into single cages. 4 h after reperfusion and following another anesthesia the left kidneys were taken out. Again, the kidneys were cut into two halves and one of it was preserved in liquid nitrogen for proteomic analyses.

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Ischemia reperfusion injury (IRI) in organ transplantation and the effects of carbon monoxide treatment

Project description:Ischemia reperfusion injury (IRI) in organ transplantation remains a significant problem with limited alternative therapeutic options. Organs that undergo significant damage during IRI, particularly those enduring long warm ischemia times, undergo significant delayed graft function (DGF) after reperfusion and tend to have greater complications long term with the onset of chronic rejection. The gas molecule carbon monoxide (CO) has emerged as an agent that can suppress IRI in rodent models of solid organ transplantation. Since the use of CO is a potential therapeutic modality in humans, we tested if CO can prevent DGF in a pig model of kidney transplantation Keywords: stress response, treatment response 18 Samples from pig kidneys, two naïve controls, two timepoints, two conditions, 4 replicates

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Intralipid protects the heart in late pregnancy against ischemia/reperfusion injury

Project description:The heart of late pregnant (LP) rodents is more prone to ischemia/reperfusion (I/R) injury compared to non-pregnant rodents. We hypothesized that Intralipid (ITLD) protects the heart in LP rodents against I/R injury. We performed genome-wide expression profiling to identify the underlying mechanisms. Female LP rat hearts were subjected to ischemia followed by reperfusion with vehicle or ITLD (one bolus of 5mg/kg).

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small RNA-Seq of rat kidney in a model of ischemic preconditioning/ischemia-reperfusion injury

Project description:Ischemic preconditioning is effective in limiting subsequent ischemic acute kidney injury in experimental models. microRNAs are an important class of post-transcriptional regulator and show promise as biomarkers of kidney injury. An evaluation was performed of the time- and dose-dependent effects of ischemic preconditioning in a rat model of functional (bilateral) ischemia-reperfusion injury. A short, repetitive sequence of ischemic preconditioning resulted in optimal protection from subsequent ischemia-reperfusion injury. A detailed characterization of microRNA expression in ischemic preconditioning/ischemia-reperfusion injury was performed by small RNA-Seq.

2021-12-31 | E-MTAB-9896 | biostudies-arrayexpress

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