Results 31 to 40 of about 16,625 (183)

Metabolism of 4 beta -hydroxycholesterol in humans

, 2002
One of the major oxysterols in the human circulation is 4 beta-hydroxycholesterol formed from cholesterol by the drug-metabolizing enzyme cytochrome P450 3A4.
Björkhem, Ingemar, Norlin, Maria,, Diczfalusy, Ulf, Andersson, Ulla, Eggertsen, Gösta, Rystedt, Eva, Ellis, Eva, Bodin, Karl, Pikuleva, Irina   +8 more
core   +1 more source

Serum 24‐hydroxycholesterol in probable Alzheimer's dementia: Reexploring the significance of a tentative Alzheimer's disease biomarker

Aging Medicine, 2019
Objective This study measured and analyzed the serum levels of 24‐hydroxycholesterol in patients with probable Alzheimer's disease (AD) and age‐/sex‐matched controls.
Debashree Roy, Sankha Shubhra Chakrabarti, Anindita Banerjee, Pallav Sharma, Atanu Biswas, Sasanka Chakrabarti   +5 more
doaj   +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

PAK1 activation drives divergent resistance mechanisms to aromatase inhibition and tamoxifen in a luminal: A breast cancer model

Molecular Oncology, EarlyView.
Breast cancer remains a major cause of cancer death in women, frequently developing endocrine therapy resistance. This study demonstrates that upregulated p21‐activated kinase 1 (PAK1) activity drives resistance to tamoxifen and long‐term estrogen deprivation in ER+ breast cancer models.
Luisa Schwarzmüller, Janina Müller, Efstathios‐Iason Vlachavas, Lukas Beumers, Lena Fleischhacker, Sara Burmester, Angelika Wörner, Sabine Karolus, Dominic Helm, Cindy Körner, Stefan Wiemann   +10 more
wiley   +1 more source

27-Hydroxycholesterol: production rates in normal human subjects

Journal of Lipid Research, 1999
We attempted to quantitate production of bile acid via the 27-hydroxylation pathway in six human subjects. After bolus intravenous injection of known amounts of [24-14C]cholic acid and [24-14C]chenodeoxycholic acid, each subject underwent a constant ...
William C. Duane, Norman B. Javitt
doaj   +1 more source

Se doped ZnO nanoparticles with improved catalytic activity in degradation of Cholesterol [PDF]

Journal of Water and Environmental Nanotechnology, 2018
Pristine and Se doped ZnO nanoparticles (NPs) were successfully synthesized by thermo-mechanical method and their structural, morphological and optical properties are characterized.
Bhavani Nenavathu, Aarti Sharma, Raj Kumar Dutta   +2 more
doaj   +1 more source

Extracellular Vesicle‐Transferred ATP‐Citrate Lyase Induces Monocyte Differentiation Toward Tumor‐Associated Macrophages and Fuels Hepatocellular Carcinoma Progression

Advanced Science, EarlyView.
Hepatocellular carcinoma (HCC)‐derived extracellular vesicles (EVs) enrich the metabolic enzyme ATP‐citrate lyase (ACLY). EV‐transferred ACLY enhances palmitate biosynthesis, increases the S‐palmitoylation and stability of multiple immune checkpoint proteins, augments the cellular immunosuppressive activity, and ultimately accelerates the malignant ...
Zhijun Liu, Haihong Lai, Qing Yang, Chaoyue Zhang, Bin Jia, Qiyi Chen, Yuling Deng, Fen Cao, Yuyu You, Zhe Li, Dongming Kuang, Bo Li   +11 more
wiley   +1 more source

Bobbing of 27-hydroxycholesterol.

, 2018
<p>Movie showing the bobbing of 27-hydroxycholesterol.</p ...
Kulig, Waldemar, Kulig, Waldemar (5268277)   +1 more
core   +1 more source

Regulation of cholesterol biosynthesis and esterification by 25-hydroxycholesterol in a macrophage-like cell line: uncoupling by progesterone.

Journal of Lipid Research, 1984
The coordinated control of cholesterol biosynthesis and esterification by 25-hydroxycholesterol was studied in the macrophage-like cell line P388D1. Since 25-hydroxycholesterol rapidly stimulated incorporation of [3H]oleate into the cholesteryl ester ...
S C Miller, G Melnykovych
doaj   +1 more source

Palmitic Acid Promotes Antiviral Innate Immunity via ZDHHC20‐Mediated CMPK2 Palmitoylation

Advanced Science, EarlyView.
Metabolites have important functions in innate immune activation and regulation. Wang et al. uncover metabolic regulation of antiviral immunity through CMPK2 palmitoylation, which regulates CMPK2 mitochondrial localization and is promoted by ZDHHC20 but reversed by PPT1, inhibition of which antagonizes viral infection in mice.
Yujia Wang, Zenghui Cui, Yunkai Zhang, Zhiqing Li, Xuetao Cao   +4 more
wiley   +1 more source