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Affect of liver transcriptome by acute acetaminophen exposure [mRNA]

ABSTRACT: To study the global changes of liver transcriptome after acetaminophen overdose.

ORGANISM(S): Mus musculus

PROVIDER: GSE42178 | GEO | 2013/05/03

SECONDARY ACCESSION(S): PRJNA179240

REPOSITORIES: GEO

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Affect of liver transcriptome by acute acetaminophen exposure [mRNA]

Project description:To study the global changes of liver transcriptome after acetaminophen overdose. To study the global changes of transcriptome in the liver after acetaminophen overdose. Eight week old female C57BL/6 mice were fasted for 24 hours prior to a single intraperitoneal injection of 350mg/kg of acetaminophen in phosphate buffer saline (PBS) (treatment group) or PBS (control group). The mice were euthanized at different time points post exposure; plasma and tissue samples were collected for pathological examination and biochemical analyses.

2013-05-03 | E-GEOD-42178 | biostudies-arrayexpress

Affect of liver transcriptome by acute acetaminophen exposure [miRNA]

Project description:To study the global changes of liver transcriptome after acetaminophen overdose.

2013-05-03 | GSE42181 | GEO

Affect of liver transcriptome by acute acetaminophen exposure [miRNA]

2013-05-03 | E-GEOD-42181 | biostudies-arrayexpress

Novel Protective Role of Nicotinamide Phosphoribosyltransferase in Acetaminophen-induced Acute Liver Injury in Mice

Project description:Acetaminophen overdose is the most common cause of acute liver injury (ALI) or acute liver failure in the USA. Its pathogenetic mechanisms are incompletely understood. Additional studies are warranted to identify new genetic risk factors for more mechanistic insights and new therapeutic target discoveries. The objective of this study was to explore the role and mechanisms of nicotinamide phosphoribosyltransferase (NAMPT) in acetaminophen-induced ALI. C57BL/6 Nampt gene wild type (Nampt+/+)-, heterozygous knockout (Nampt+/-)-, and overexpression (NamptOE)-mice were treated with overdose of acetaminophen, followed by histological, biochemical, and transcriptomic evaluation of liver injury. The mechanism of Nampt in acetaminophen -induced hepatocytic toxicity was also explored in cultured primary hepatocytes. Three lines of evidence have convergently demonstrated that acetaminophen overdose triggers the most severe oxidative stress and necrosis, and the highest expression of key necrosis driving genes in Nampt+/- mice, while the effects in NamptOE mice were least severe relative to Nampt+/+ mice. These findings support that NAMPT protects against acetaminophen induced ALI.

2018-04-03 | GSE110787 | GEO

Role of YAP in Liver Regeneration After Acetaminophen Overdose

Project description:Overdose of acetaminophen (APAP) is the major cause of acute liver failure in the Western world with very limited treatment options. Previous studies from our groups and others have shown that timely activation of liver regeneration is a critical determinant of transplant-free survival of APAP-induced acute liver failure (ALF) patients. We used affy microarrays to explore the mechanisms of transcriptional expression in YAP-KO mice after 300mg/kg APAP overdose.

2021-10-04 | GSE183119 | GEO

Role of YAP in Liver Regeneration After Acetaminophen Overdose

Project description:Role of YAP in Liver Regeneration After Acetaminophen Overdose

| PRJNA759224 | ENA

Expression data from mouse liver after Acetaminophen intoxication

Project description:Acetaminophen (APAP) is the most widely used analgesic in the United States. Its acute overdose causes liver damage by inducing localized centrilobular cell death. Because of widespread use, APAP toxicity has become the most frequent cause of acute liver failure. Many factors have been associated with the susceptibility of APAP-induced liver injuries, however, few of them have been confirmed and used in the clinical setting. We tried to identify the subset of factors that could affect susceptibility to APAP-induced liver injury by an integrative genetic, transcriptional and 2-D-NMR-based metabolomic analysis across a panel of inbred mouse strains.

2009-08-14 | GSE17649 | GEO

Affect of liver transcriptome by acute acetaminophen exposure

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2013-05-03 | E-GEOD-42182 | biostudies-arrayexpress

Affect of liver transcriptome by acute acetaminophen exposure

Project description:This SuperSeries is composed of the SubSeries listed below.

2013-05-03 | GSE42182 | GEO

Protein S-nitrosylation Restricts Xenobiotic Receptor PXR Hyperactivity and Ameliorates Acetaminophen-induced Liver Injury in Mice

Project description:Drug-induced liver injury (DILI), especially acetaminophen overdose, is the leading cause of acute liver failure. Pregnane X receptor (PXR) is a nuclear receptor and the master regulator of drug metabolism. Aberrant activation of PXR plays a pathogenic role in the acetaminophen hepatotoxicity. Here, we aimed to examine the PXR S-nitrosylation (SNO) in response to acetaminophen. We found that PXR was S-nitrosylated in hepatocytes and the mouse livers after exposure to acetaminophen or S-nitrosoglutathione (GSNO). Mass-spectrometry and site-directed mutagenesis identified the cysteine 307 as the primary residue for SNO-modification. In hepatocytes, SNO suppressed both agonist (rifampicin and SR12813)-induced and constitutively active PXR (VP-PXR) activations. Furthermore, in acetaminophen overdosed mouse livers, PXR protein was decreased at the centrilobular regions overlapping with increased SNO. In PXR-deficient (PXR-/-) mice, replenishing the livers with the SNO-deficient PXR significantly aggravated hepatic necrosis and apoptosis, increased HMGB1 release, and exacerbated liver injury and inflammation. Particularly, we demonstrated that S-nitrosoglutathione reductase (GSNOR) inhibitor N6022 promoted hepatoprotection by increasing the levels of PXR S-nitrosylation. In conclusion, PXR is post-translationally modified by S-nitrosylation in hepatocytes in response to acetaminophen. This modification mitigated the acetaminophen-induced PXR hyperactivity. It may serve as a new target for therapeutical intervention.

2024-03-06 | GSE243679 | GEO

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