Results 41 to 50 of about 7,256 (187)

A comprehensive method for extraction and quantitative analysis of sterols and secosteroids from human plasma

open access: yesJournal of Lipid Research, 2012
We describe the development of a method for the extraction and analysis of 62 sterols, oxysterols, and secosteroids from human plasma using a combination of HPLC-MS and GC-MS. Deuterated standards are added to 200 μl of human plasma.
Jeffrey G. McDonald   +3 more
doaj   +1 more source

Targeting the HSPA8‐CMA‐ATP6V1A Axis Triggers Lysosomal Hyperacidification and Catastrophic Vacuolation in Prostate Cancer

open access: yesAdvanced Science, EarlyView.
Our experimental evidence supports a model in which ALO targets the HSPA8‐CMA‐ATP6V1A axis to induce lysosomal hyperacidification and initiate osmotic and lipidomic stress. These changes are associated with LMP and loss of lysosomal integrity in prostate cancer cells.
Bingzheng An   +8 more
wiley   +1 more source

Cholesterol Metabolites 25-Hydroxycholesterol and 25-Hydroxycholesterol 3-Sulfate Are Potent Paired Regulators: From Discovery to Clinical Usage

open access: yesMetabolites, 2020
Oxysterols have long been believed to be ligands of nuclear receptors such as liver × receptor (LXR), and they play an important role in lipid homeostasis and in the immune system, where they are involved in both transcriptional and posttranscriptional ...
Yaping Wang, Xiaobo Li, Shunlin Ren
doaj   +1 more source

Functional Suppression of SCAP Triggers Endoplasmic Reticulum Stress‐Dependent Ferroptosis by Impairing Cholesterol Metabolism in Gastric Cancer

open access: yesAdvanced Science, EarlyView.
This study reveals a novel GC therapy targeting cholesterol homeostasis. Inhibiting the SCAP sterol‐sensing domain causes lethal ER stress via cholesterol accumulation, paradoxically forcing continuous synthesis that triggers ferroptosis. The findings link sterol sensing, metabolic dysregulation, and ferroptosis, establishing an anti‐cancer paradigm ...
Qianqian Xu   +17 more
wiley   +1 more source

Macrophages, Oxysterols and Atherosclerosis

open access: yesCirculation Journal, 2010
Macrophages play central roles in immunity and homeostasis, and contribute to the pathogenesis of atherosclerosis through their accumulation of cholesterol and the production of inflammatory mediators and cytokines. Recent studies indicate that oxysterols influence diverse aspects of macrophage biology.
Shibata, Norihito, Glass, Christopher K.
openaire   +3 more sources

Aerobic Exercise Training Selectively Changes Oxysterol Levels and Metabolism Reducing Cholesterol Accumulation in the Aorta of Dyslipidemic Mice

open access: yesFrontiers in Physiology, 2017
Background: Oxysterols are bioactive lipids that control cellular cholesterol synthesis, uptake, and exportation besides mediating inflammation and cytotoxicity that modulate the development of atherosclerosis.
Guilherme Silva Ferreira   +9 more
doaj   +1 more source

Pharmacokinetic profiling of imatinib in relation to CYP3A4 activity in leukaemia patients

open access: yesBritish Journal of Clinical Pharmacology, EarlyView.
Aim Imatinib pharmacokinetics exhibit large interindividual variability because of differences in CYP3A4 activity—the main imatinib‐metabolizing enzyme. While therapeutic drug monitoring is effective, it requires steady‐state conditions and frequent sampling.
Anna Sofie Buhl Rasmussen   +14 more
wiley   +1 more source

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

open access: yesInterdisciplinary Medicine, EarlyView.
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   +10 more
wiley   +1 more source

Oxysterols and oxysterol binding proteins: role in lipid metabolism and atherosclerosis

open access: yesAnnals of Medicine, 2004
Oxidized derivatives of cholesterol have been investigated actively for decades in the context of the oxidative hypothesis of atherosclerosis. Oxysterols arise in our tissues as a result of enzymatic or non-enzymatic oxidation reactions and are also obtained from dietary sources.
Vesa M, Olkkonen, Markku, Lehto
openaire   +2 more sources

Proteome Analysis of Corynebacterium diphtheriae–Macrophage Interaction

open access: yesPROTEOMICS, EarlyView.
ABSTRACT Contact of Corynebacterium diphtheriae with macrophages induces adaptations on both bacterial and cellular sides. The study presented here was aiming to shed light on the simultaneous intracellular adaptation of the bacteria and changes in the proteome of the phagocytes in response to the internalization of C. diphtheriae.
Luca Musella   +6 more
wiley   +1 more source

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