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Single-cell transcriptome sequencing of macrophages in acute kidney injury

ABSTRACT: We uesd single-cell transcriptome sequencing technology to sequence the mononuclear phagocytes in the mice kidney, blood and spleen after acute kidney injury, and comprehensively describe characteristics of mononuclear phagocytes.

ORGANISM(S): Mus musculus

PROVIDER: GSE174324 | GEO | 2022/02/09

REPOSITORIES: GEO

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Resident Macrophages Reprogram Toward a Developmental State After Acute Kidney Injury

Project description:Background – Acute kidney injury (AKI) is a devastating clinical condition affecting at least two-thirds of critically ill patients and among these patients is associated with a greater than 60% risk of mortality. Kidney mononuclear phagocytes (MP) are necessary for pathogenesis and healing in mouse models of AKI and thus have been the subject of investigation as potential targets for clinical interventions. Methods and Results – We have determined that, after injury, F4/80Hi-expressing kidney resident macrophages (KRM) are a distinct cellular subpopulation that does not differentiate from non-resident infiltrating MP. However, if KRM are depleted using polyinosinic:polycytidylic acid (poly I:C), they can be reconstituted from bone marrow derived precursors. Further, KRM lack major histocompatibility complex class II (MHCII) expression before post-parturition day 7 (P7) but upregulate it over the next 14 days. This MHCII- KRM phenotype reappears after injury. RNA sequencing shows injury causes transcriptional reprogramming of KRM to more closely resemble that found at P7. Post-injury KRM are also enriched in Wingless-type MMTV integration site family (Wnt) signaling, indicating a pathway vital for mouse and human kidney development is active. Conclusions – These data indicate that mechanisms involved in kidney development may be active after injury in KRM.

2019-04-16 | GSE121410 | GEO

Propofol and Sevoflurane Anesthesia in Colorectal Cancer Surgery: Incidence of Acute Kidney Injury

Project description:The goal of this observational study is to compare anesthetic modalities (intravenous propofol anesthesia with sevoflurane gas anesthesia) in patients who underwent colorectal cancer resection surgery regarding the outcome of acute kidney injury. The main questions it aims to answer are: * is there a difference in acute kidney injury incidence in the two anesthetic modalities? * is there a difference in plasma creatinine between the two anesthetic modalities? * are there any patient characteristics or intraoperative factors that effect the incidence of acute kidney injury in either anesthetic modality? The study will analyze data from the CAN clinical trial database. (Cancer and Anesthesia: Survival After Radical Surgery - a Comparison Between Propofol or Sevoflurane Anesthesia, NCT01975064)

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Apobec1 and acute kidney injury

Project description:Kidney tissues from a cisplatin-induced acute kidney injury mouse model of global Apobec1 knockout mice compared with wild type mice. 6 months old male mice examined. We used microarrays to identify genes that are differentially expressed during acute kidney injury in the absence of apobec1 compared with wild type mice.

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Mice kidney tissue: control vs. acute kidney injury

Project description:Mice kidney tissue: control vs. acute kidney injury

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Mice kidney tissue: control vs. acute kidney injury

Project description:Transcriptional profiling of mouse kidney tissue comparing control untreated mice with mice treated with cisplatin. The latter makes kidney failure. Goal was to identify the alterations of N6-methyladenosine (m6A) RNA profiles in cisplatin-induced acute kidney injury (AKI) in mice.

2021-07-06 | GSE165100 | GEO

Apobec1 and acute kidney injury

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Molecular regulation of acute kidney injury (miRNA)

Project description:18 zero-hour and 18 selected post-transplant (Tx) biopsy samples from 18 kidney allografts (8 acute kidney injury (AKI), 10 PBx - protocol biopsies - controls) were analyzed by using the Affymetrix GeneChipM-BM-. miRNA 3.0 Array. Comparison between control group (protocol biopsies) and indication biopsies with histological lesions of acute tubular necrosis without rejection (ATN).

2015-01-15 | E-GEOD-53771 | biostudies-arrayexpress

Molecular regulation of acute kidney injury (mRNA)

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2015-01-15 | E-GEOD-53769 | biostudies-arrayexpress

H3K4me3 modification in zebrafish kidney after acute kidney injury

Project description:H3K4me3 modification in zebrafish kidney after acute kidney injury

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Identifying candidate protein markers of acute kidney injury in acute decompensated heart failure using sheep kidney cortex

Project description:A quarter of patients with acute decompensated heart failure (ADHF) experience acute kidney injury (AKI), an abrupt loss of kidney function that doubles the risk of death at one-year. There is a critical need to identify early markers for AKI in ADHF, however, no protein candidates have been validated as diagnostic or prognostic biomarkers in this setting. We aimed to identify novel candidate protein biomarkers by quantifying changes in protein expression in the kidney that occur during ADHF development and recovery in an ovine model. Relative quantitative protein profiling was performed using Sequential Window Acquisition of All Theoretical Mass Spectrometry (SWATH-MS) in kidney cortex from healthy control sheep (n=5), sheep with established rapid pacing-induced ADHF (n=8) and sheep after ~4 weeks recovery from ADHF (n=7). Of 790 proteins quantified, we identified 17 candidate kidney injury markers, one potential marker of kidney recovery and two markers of long-term renal impairment that were differentially expressed between groups (1.2-2.6 fold-change, p<0.05). Differentially expressed proteins were enriched in pro-inflammatory signaling pathways: Glycoprotein VI (activated during ADHF development, adjusted p<0.01) and acute phase response (repressed during recovery from ADHF, p<0.01). This research identified 20 candidate protein markers of kidney injury, including 6 promising candidates supported by existing evidence and 14 novel candidates never implicated in AKI. Early awareness of AKI in ADHF through the use of biomarkers has the potential to reduce mortality and improve outcomes for these at-risk patients.

2022-01-19 | PXD028983 | Pride

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