Results 81 to 90 of about 4,298,356 (197)

On the substrate specificity of human CYP27A1

Journal of Lipid Research, 2003
The mitochondrial sterol 27-hydroxylase (CYP27A1) is required for degradation of the C27-sterol side chain in bile acid biosynthesis. CYP27A1 seems, however, to have roles beyond this, as illustrated by patients with a deficient sterol 27-hydroxylase due
Maria Norlin, Sara von Bahr, Ingemar Björkhem, Kjell Wikvall   +3 more
doaj   +1 more source

4β-Hydroxycholesterol Signals From the Liver to Regulate Peripheral Cholesterol Transporters

Frontiers in Pharmacology, 2020
Activation of pregnane X receptor (PXR) elevates circulating 4β-hydroxycholesterol (4βHC), an agonist of liver X receptor (LXR). PXR may also regulate 25-hydroxycholesterol and 27-hydroxycholesterol.
Tuire Salonurmi, Tuire Salonurmi, Heba Nabil, Heba Nabil, Heba Nabil, Justiina Ronkainen, Justiina Ronkainen, Tuulia Hyötyläinen, Heidi Hautajärvi, Markku J. Savolainen, Markku J. Savolainen, Markku J. Savolainen, Ari Tolonen, Matej Orešič, Päivi Känsäkoski, Jaana Rysä, Jukka Hakkola, Jukka Hakkola, Jukka Hakkola, Janne Hukkanen, Janne Hukkanen, Janne Hukkanen   +21 more
doaj   +1 more source

Bile acid metabolism and signaling in human and animal health: A One Health perspective

iMetaOmics, Volume 3, Issue 3, September 2026.
Bile acids maintain host homeostasis through enterohepatic circulation, microbial transformation, and bile acid receptor signaling, thereby regulating glucose and lipid metabolism, intestinal barrier integrity, and immunity. These effects support human disease intervention and health‐oriented animal production, reducing drug dependence and residue ...
Lei Li, Shuai Liu, Zhijun Cao, Yangchun Cao, Shengru Wu, Lu Deng, Junhu Yao, Jun Zhang   +7 more
wiley   +1 more source

Canal 25 : Videoescoles

, 1991
Congrés realitzat pel Canal 25 que tracta sobre com ha sigut la inversió tecnològica a les escoles amb feedback per part de l'estudiant i ...
Canal 25 (25 Televisió)
core  

Identification and in vivo detection of side-chain hydroxylated metabolites of 4β-hydroxycholesterol

, 2023
Oxysterols are oxidized derivatives of cholesterol that are formed by enzymatic processes or through the action of reactive oxygen species. Several of these bioactive lipids have been shown to be affected and/or play a role in inflammatory processes.
Roumain, Martin, Guillemot-Legris, Owein, Al Houayek, Mireille, Muccioli, Giulio, Mireille Alhouayek, Ameraoui, Hafsa, Martin Roumain, Hafsa Ameraoui, Giulio G. Muccioli, Owein Guillemot-Legris   +9 more
core   +1 more source

Separation and Determination of Some of the Main Cholesterol-Related Compounds in Blood by Gas Chromatography-Mass Spectrometry (Selected Ion Monitoring Mode)

Separations, 2018
Oxysterols are metabolites produced in the first step of cholesterol metabolism, which is related to neurodegenerative disorder. They can be detected by testing blood, plasma, serum, or cerebrospinal fluid.
Lucia Valverde-Som, Alegría Carrasco-Pancorbo, Saleta Sierra, Soraya Santana, Cristina Ruiz-Samblás, Natalia Navas, Javier S. Burgos, Luis Cuadros-Rodríguez   +7 more
doaj   +1 more source

Biomimetic mineralization‐inspired formulation‐adjuvant integrated circRNA nanovaccine against COVID‐19

Interdisciplinary Medicine, Volume 4, Issue 5, September 2026.
Inspired by the role of Mg2+ in stabilizing RNA secondary structures, we developed a one‐pot biomimetic mineralization method for synthesizing a circular RNA‐based nanovaccine (circRNA@FAiNVac) that integrates formulation and adjuvant functions. This nanovaccine exhibits potent immunostimulatory activation enabling multimodal immune responses and ...
Liangru Lin, Yingying Ren, Jing Li, Panxing Ren, Xinran Wang, Yixin Ding, Linsu Liu, Cong Liu, Zhou Li, Yan Liu, Dan Luo   +10 more
wiley   +1 more source

Oxidation of 7-dehydrocholesterol and desmosterol by human cytochrome P450 46A1[S]

Journal of Lipid Research, 2014
Cytochrome P450 (P450 or CYP) 46A1 is expressed in brain and has been characterized by its ability to oxidize cholesterol to 24S-hydroxycholesterol. In addition, the same enzyme is known to further oxidize 24S-hydroxycholesterol to the 24,25- and 24,27 ...
Sandeep Goyal, Yi Xiao, Ned A. Porter, Libin Xu, F. Peter Guengerich   +4 more
doaj   +1 more source

Metabolism in Tumor: Mechanisms and Therapeutic Perspectives

MedComm, Volume 7, Issue 9, September 2026.
Tumor metabolic reprogramming converges on three hubs—the SREBP1/2–FASN–SCD1 lipogenic axis, the HIF‐1α–GLUT1–LDHA glycolytic axis, and the LDLR–SCARB1–LXR cholesterol system—which integrate transcriptional, epigenetic (histone lactylation, m6A), and microenvironmental inputs to generate metabolic plasticity, immune evasion, and therapy resistance ...
Jia‐Chen Cheng, Yi‐Xuan Hu, Xiang‐Chun Huang, Shan Jiang, Jie‐Lin Wang, Yang Zhao, Shuo Chen   +6 more
wiley   +1 more source

Effects of 25-hydroxycholesterol and 7-ketocholesterol, inhibitors of sterol synthesis, administered orally to mice.

, 1977
When 25-hydroxycholesterol or 7-ketocholesterol was fed to mice with the diet, growth was suppressed and mature mice lost weight. The effect of the 7-ketone upon body weight was effectively counteracted by cholesterol whereas cholestanol and beta ...
Kandutsch, A A, Heiniger, H J, Chen, H W, Heiniger, H   +3 more
core   +1 more source