The cocarcinogenic effect of bile acids on the chemical transformation of C3H/10T1/2 fibroblasts was examined in vitro. The assimilation of 3H-methylcholanthrene (3H-MCA) by C3H/10T1/2 cells pretreated with bile acids was examined by the measurement of uptake and by autoradiography. Cells that were pretreated for 48 h with bile acids (100 microM lithocholic acid, 500 microM cholic acid) and then maintained in medium that contained 3H-MCA showed an increase in radioactivity compared to control cells. These results indicate that the transfer of carcinogens into cells is enhanced by pretreatment with bile acids.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1159/000226913 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The impact of solute carrier proteins on disrupting substance regulation in metabolic disorders: insights and clinical applications.
Front Pharmacol
January 2025
Center for Medical Research and Innovation in Digestive System Tumors, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.
Carbohydrates, lipids, bile acids, various inorganic salt ions and organic acids are the main nutrients or indispensable components of the human body. Dysregulation in the processes of absorption, transport, metabolism, and excretion of these metabolites can lead to the onset of severe metabolic disorders, such as type 2 diabetes, non-alcoholic fatty liver disease, gout and hyperbilirubinemia. As the second largest membrane receptor supergroup, several major families in the solute carrier (SLC) supergroup have been found to play key roles in the transport of substances such as carbohydrates, lipids, urate, bile acids, monocarboxylates and zinc ions.
View Article and Find Full Text PDFFTIR microscopic study on biomolecular alterations in placental tissues of intrahepatic cholestasis of pregnancy.
Anal Methods
January 2025
Shanghai Key Laboratory of Maternal Fetal Medicine, Shanghai 200092, China.
Intrahepatic cholestasis of pregnancy (ICP) is a pregnancy-specific liver disorder that typically leads to severe pregnancy outcomes. Although genetic, endocrine, and environmental factors are involved in the etiology of ICP, the role of metabolic disorders remains unclear. Here we report an examination of the biomolecular alterations in placental tissues of women with ICP and healthy pregnant women at a molecular level.
View Article and Find Full Text PDFLong-term effects of Nε-carboxymethyllysine intake on intestinal barrier permeability: Associations with gut microbiota and bile acids.
Food Res Int
February 2025
Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, PR China. Electronic address:
Advanced glycation end products (AGEs) in processed foods are closely linked to intestinal injury. However, the long-term effects of exposure to free Nɛ-carboxymethyl lysine (CML), a prevalent AGE molecule, on intestinal barrier integrity have been rarely evaluated. This study investigated the temporal effects of CML exposure on intestinal barrier permeability in C57BL/6N mice at diet-related doses over 12, 14, and 16 weeks.
View Article and Find Full Text PDFLysosomal dysfunction and inflammatory sterol metabolism in pulmonary arterial hypertension.
Science
January 2025
Center for Pulmonary Vascular Biology and Medicine, Pittsburgh, Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, USA.
Vascular inflammation regulates endothelial pathophenotypes, particularly in pulmonary arterial hypertension (PAH). Dysregulated lysosomal activity and cholesterol metabolism activate pathogenic inflammation, but their relevance to PAH is unclear. Nuclear receptor coactivator 7 () deficiency in endothelium produced an oxysterol and bile acid signature through lysosomal dysregulation, promoting endothelial pathophenotypes.
View Article and Find Full Text PDFIntestinal rearrangement of biliopancreatic limbs, alimentary limbs, and common limbs in obese type 2 diabetic mice after duodenal jejunal bypass surgery.
Front Endocrinol (Lausanne)
January 2025
Department of Metabolic Surgery, Jinshazhou Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.
Bariatric surgery is an effective treatment for type 2 Diabetes Mellitus (T2DM), yet the precise mechanisms underlying its effectiveness remain incompletely understood. While previous research has emphasized the role of rearrangement of the gastrointestinal anatomy, gaps persist regarding the specific impact on the gut microbiota and barriers within the biliopancreatic, alimentary, and common limbs. This study aimed to investigate the effects of duodenal-jejunal bypass (DJB) surgery on obese T2DM mice.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!