Results 61 to 70 of about 8,905 (163)

Novel plant inducers of PXR-dependent cytochrome P450 3A4 expression in HepG2 cells

Saudi Pharmaceutical Journal, 2018
The cytochrome P450 3A4 (CYP3A4) is the most abundant CYP450 enzyme involved in the metabolism of endogenous products and xenobiotics, including prescription drugs and herbals.
Mohammed S. Al-Dosari, Mohammad K. Parvez   +1 more
doaj   +1 more source

Endoscopic Treatment for Esophagogastric Variceal Bleeding in Patients With Acute‐on‐Chronic Liver Failure: An Observational Study

Portal Hypertension &Cirrhosis, EarlyView.
In patients with acute‐on‐chronic liver failure (ACLF), esophagogastric variceal bleeding (EGVB) represents a critical complication associated with high short‐term mortality. This study evaluated the efficacy of endoscopic treatment in this specific population and identified prognostic factors associated with 6‐week rebleeding and mortality.
Yanan Sun, Peng Li, Shibin Zhang, Yuening Zhang, Chunlei Fan, Ajuan Zeng, Yanna Liu, Huiguo Ding   +7 more
wiley   +1 more source

Promoter DNA methylation of farnesoid X receptor and pregnane X receptor modulates the intrahepatic cholestasis of pregnancy phenotype.

PLoS ONE, 2014
The intrahepatic cholestasis of pregnancy (ICP) is a multifactorial liver disorder which pathogenesis involves the interplay among abnormal bile acid (BA) levels, sex hormones, environmental factors, and genetic susceptibility.
Romina Cabrerizo, Gustavo O Castaño, Adriana L Burgueño, Tomas Fernández Gianotti, María Mora Gonzalez Lopez Ledesma, Diego Flichman, Carlos J Pirola, Silvia Sookoian   +7 more
doaj   +1 more source

Enhanced Acetaminophen Toxicity by Activation of the Pregnane X Receptor [PDF]

Toxicological Sciences, 2004
The pregnane X receptor (PXR) is a ligand-activated transcription factor and member of the nuclear receptor superfamily. Activation of PXR represents an important mechanism for the induction of cytochrome P450 3A (CYP3A) enzymes that can convert acetaminophen (APAP) to its toxic intermediate metabolite, N-acetyl-p-benzoquinone imine (NAPQI). Therefore,
Grace L, Guo, Jeff S, Moffit, Christopher J, Nicol, Jerrold M, Ward, Lauren A, Aleksunes, Angela L, Slitt, Steven A, Kliewer, Jose E, Manautou, Frank J, Gonzalez   +8 more
openaire   +2 more sources

Current Cell/Organoid and Animal Models for Primary Sclerosing Cholangitis

Portal Hypertension &Cirrhosis, EarlyView.
Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease with limited therapeutic options and a marked risk of progression to biliary fibrosis, cirrhosis, and malignancy. Progress in PSC research has been hindered by the lack of models that faithfully recapitulate the complex biliary microenvironment and disease heterogeneity ...
Qigu Yao, Sheng Cheng, Qiaoling Pan, Jiong Yu, Hongcui Cao   +4 more
wiley   +1 more source

Pregnane X Receptor Is SUMOylated to Repress the Inflammatory Response [PDF]

The Journal of Pharmacology and Experimental Therapeutics, 2010
Long-term treatment of patients with the macrolide antibiotic and prototypical activator of pregnane X receptor (PXR) rifampicin (Rif) inhibits the inflammatory response in liver. We show here that activation of the inflammatory response in hepatocytes strongly modulates SUMOylation of ligand-bound PXR.
Gang, Hu, Chenshu, Xu, Jeff L, Staudinger   +2 more
openaire   +2 more sources

Construction of an O2‐responsive engineering bioreactor for enhanced indole‐3‐propionic acid production and deoxynivalenol detoxification

Responsive Materials, EarlyView.
An oxygen‐responsive living bioreactor was engineered via interspecies protoplast fusion, converting oxygen from an inhibitory stress into a programmable signal for sustained indole‐3‐propionic acid (IPA) production. This genetically encoded bioreactor enables robust aerobic operation and therapeutic efficacy of deoxynivalenol detoxification in vivo ...
Ning Ma, Jiakun Shen, Kun Cai, Wenxi Zhao, Chuan Feng, Xingyao Wang, Yangyang Liu, Dongyan Zhang, Xi Ma   +8 more
wiley   +1 more source

Regulation of xenobiotic and bile acid metabolism by the nuclear pregnane X receptor

Journal of Lipid Research, 2002
The nuclear pregnane X receptor (PXR; NR1I2) is an integral component of the body's defense mechanism against chemical insult (chemoprotection). PXR is activated by a diverse array of lipophilic chemicals, including xenobiotics and endogenous substances,
Steven A. Kliewer, Timothy M. Willson
doaj   +1 more source

Characterization of porcine pregnane X receptor, farnesoid X receptor and their splice variants

Experimental Biology and Medicine, 2010
The pregnane X receptor (PXR; NR1I2) and the farnesoid X receptor (FXR; NR1H4) regulate the expression of many major metabolic enzymes. With the pig being used as a model for humans in metabolic and toxicological studies and also an important food animal, we characterized the transactivation profile of the porcine orthologs of these receptors, pgPXR ...
Matthew A, Gray, Callie B, Pollock, Lawrence B, Schook, E James, Squires   +3 more
openaire   +2 more sources

Diet–Microbiome–Immune Interactions at the Gut Mucosa in Food Allergy: Mechanisms, Gaps, and Therapeutic Implications

Allergy, EarlyView.
ABSTRACT Mucosal surfaces are sites of highly dynamic interactions among epithelial and immune cells, environmental exposures, particularly dietary inputs, and the diverse microbial communities and their metabolites. These elements continually influence each other to maintain homeostasis and ensure appropriate immune discrimination between pathogens ...
Clara Delaroque, Liam O'Mahony, Inge Kortekaas Krohn, Charlotte G. Mortz, Markus Ollert, Mahesh S. Desai   +5 more
wiley   +1 more source