Obesity has become an epidemic, prompting advances in therapies targeting this condition. Estrogen-related receptor α (ESRRA), a transcription factor, plays pivotal roles in energy metabolism across diverse tissues. Studies have demonstrated that loss of leads to fat malabsorption and resistance to diet-induced obesity. However, the reliance of these studies on germline mutants overlooks the tissue-specific implications of ESRRA in diet-induced obesity. Notably, exhibits high expression in the gastrointestinal (GI) tract relative to other tissues. Given the critical role of the GI tract in dietary lipid metabolism, this study employs mouse genetics and genomics approaches to dissect the specific impact of intestinal ESRRA along with investigating its role in diet-induced obesity.
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http://dx.doi.org/10.1101/2024.07.10.602978 | DOI Listing |
J Neurochem
January 2025
Nantes Université, INRAE, UMR 1280, Physiologie des Adaptations Nutritionnelles, Nantes, France.
Obesity leads to a number of health problems, including learning and memory deficits that can be passed on to the offspring via a developmental programming process. However, the mechanisms involved in the deleterious effects of obesity on cognition remain largely unknown. This study aimed to assess the impact of obesity on the production of sphingolipids (ceramides and sphingomyelins) in the brain and its relationship with the learning deficits displayed by obese individuals.
View Article and Find Full Text PDFGenes Dis
March 2025
Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
We recently reported that a chimeric peptide (GEP44) targeting the glucagon-like peptide-1 receptor (GLP-1R) and neuropeptide Y1- and Y2-receptors decreased body weight (BW), energy intake and core temperature in diet-induced obese (DIO) male and female mice. Given that GEP44 was found to reduce core temperature (surrogate measure of energy expenditure (EE)) in DIO mice, we hypothesized that GEP44 would reduce EE in male and female high fat diet (HFD)-fed rats. To test this, rats were maintained on a HFD for at least 4 months to elicit DIO prior to undergoing a sequential 2-day vehicle period, 2-day GEP44 (50 nmol/kg) period and a minimum 2-day washout period and detailed measures of energy homeostasis.
View Article and Find Full Text PDFJ Biol Chem
January 2025
Department of Genetics, Human Genetics Institute of New Jersey, Rutgers University, Piscataway, NJ 08854, USA; Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08903, USA; Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition & Health, Rutgers University, New Brunswick, NJ 08901, USA; NIEHS Center for Environmental Exposures and Disease (CEED), Rutgers EOHSI Piscataway, NJ 08854, USA. Electronic address:
Obesity has escalated to epidemic proportions, driving significant advances in therapeutic strategies aimed at combating this condition. The Estrogen-related receptor α (ESRRA), a transcription factor, plays pivotal roles in energy metabolism across multiple tissues. Research has consistently shown that the absence of Esrra results in notable fat malabsorption and increased resistance to diet-induced obesity.
View Article and Find Full Text PDFBiochem Pharmacol
January 2025
Department of Cell Biology, Faculty of Medicine, Complutense University of Madrid, Spain; Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Madrid, Spain.
PAS domain-containing serine/threonine-protein kinase (PASK) is a nutrient and energy sensor regulated by fasting/refeeding conditions in hypothalamic areas involved in controlling energy balance. In this sense, PASK plays a role in coordinating the activation/inactivation of AMP-activated protein kinase (AMPK) and mechanistic target of rapamycin (mTOR) in response to fasting. PASK deficiency protects against the development of diet-induced obesity.
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