Results 81 to 90 of about 35,942 (184)

Enzymatic Measurement of Sphingosine 1-Phosphate

Analytical Biochemistry, 1999
Sphingosine 1-phosphate (SPP) is a sphingolipid metabolite which has novel dual actions acting as both an intracellular second messenger and a ligand for a family of G protein-coupled receptors. This paper describes a rapid enzymatic method to quantify mass levels of SPP in serum, mammalian tissues, and cultured cells.
L C, Edsall, S, Spiegel
openaire   +2 more sources

The suppression of the SPHK1/S1P/S1PR3 signaling pathway diminishes EGFR activation and increases the sensitivity of non-small cell lung cancer to gefitinib

Current Research in Pharmacology and Drug Discovery
Non-small-cell lung cancer (NSCLC) represents a predominant histological subtype of lung cancer, characterized by high incidence and mortality rates.
Jing Zhang, Zequn Wang, Xihua Wei, Mengyuan Han, Ribai Yan, Lijie Ma, Yan Pan   +6 more
doaj   +1 more source

Mechanisms of sphingosine and sphingosine 1-phosphate generation in human platelets

Journal of Lipid Research, 2005
The bioactive molecule sphingosine 1-phosphate (S1P) is abundantly stored in platelets and can be released extracellularly. However, although they have high sphingosine (Sph) kinase activity, platelets lack the de novo sphingolipid biosynthesis necessary
Motohiro Tani, Takamitsu Sano, Makoto Ito, Yasuyuki Igarashi   +3 more
doaj   +1 more source

Defective high‐density lipoprotein lipoprotection in type 2 diabetes during acute myocardial infarction is rescued by apolipoprotein M/sphingosine‐1‐phosphate loading

Diabetes, Obesity and Metabolism, EarlyView.
Abstract Aims Mortality of patients with type 2 diabetes (T2D) after acute myocardial infarction (AMI) is tremendous and massively increased compared to non‐T2D individuals. The reasons are unclear. High‐density lipoprotein (HDL) conducts lipoprotection during AMI, leading to improved outcomes.
Jens Vogt, Marcel Benkhoff, Nathalie H. Schröder, Hao Hu, Lisa Dannenberg, Petra Keul, Theresia Sarabhai, Kálmán Benedikt Bódis, Tobias Zeus, Philipp Wollnitzke, Malte Kelm, Amin Polzin, Bodo Levkau   +12 more
wiley   +1 more source

A facile enzymatic synthesis of sphingosine-1-phosphate and dihydrosphingosine-1-phosphate.

Journal of Lipid Research, 1989
A procedure is described to prepare sphingosine-1-phosphate by treatment of sphingosylphosphocholine with phospholipase D, isolated from Streptomyces chromofuscus.
P P Van Veldhoven, R J Foglesong, R M Bell   +2 more
doaj   +1 more source

EHD4 and ASAP2 are critical negative regulators of the claudin‐5‐based endothelial barrier

The FEBS Journal, EarlyView.
Cell‐surface CLDN‐5 protein levels can be evaluated using a probe that can bind to the extracellular domains of CLDN‐5. A probe derived from Clostridium perfringens enterotoxin allows us to isolate cells with high CLDN‐5 protein levels from a knockout cell library.
Yosuke Hashimoto, Gergő Porkoláb, Natalie Hudson, Jeffrey O'Callaghan, Nicole Hanley, Conor Delaney, Mária A. Deli, Peter Westenskow, Matthew Campbell   +8 more
wiley   +1 more source

Sphingosine-1-phosphate receptor 3 mediates sphingosine-1-phosphate induced release of weibel-palade bodies from endothelial cells.

PLoS ONE, 2014
Sphingosine-1-phosphate (S1P) is an agonist for five distinct G-protein coupled receptors, that is released by platelets, mast cells, erythrocytes and endothelial cells.
Kathinka W E M van Hooren, Léon J A Spijkers, Dorothee van Breevoort, Mar Fernandez-Borja, Ruben Bierings, Jaap D van Buul, Astrid E Alewijnse, Stephan L M Peters, Jan Voorberg   +8 more
doaj   +1 more source

Immune non‐response despite effective antiretroviral therapy in people living with HIV: A review of potential mechanisms, biomarkers and therapeutic approaches

HIV Medicine, EarlyView.
Abstract Introduction A proportion of people living with HIV (PLWH) fail to restore their CD4 count or their CD4/CD8 ratio despite effective antiretroviral therapy (ART). PLWH with immune non‐response (INR) are at a higher risk of both AIDS and non‐AIDS events. The underlying mechanisms of INR remain unclear.
Charlotte Silvestre, Antoine Gross, Alain Makinson   +2 more
wiley   +1 more source

Antagonizing the S1P-S1P3 Axis as a Promising Anti-Angiogenic Strategy

Metabolites
Background: Angiogenesis, the process of new blood vessel formation, is critically regulated by a balance of pro- and anti-angiogenic factors. This process plays a central role in tumor progression and is modulated by tumor cells. Sphingosine-1-phosphate
Sofia Avnet, Emi Mizushima, Beatrice Severino, Maria Veronica Lipreri, Antonia Scognamiglio, Angela Corvino, Nicola Baldini, Margherita Cortini   +7 more
doaj   +1 more source

Investigation into the delivery and evaluation of a unique Avena sativa (Oat) Lipid Extract on skin barrier using LC‒MS/MS, Raman spectroscopy, immunostaining analysis and skin efficacy

International Journal of Cosmetic Science, EarlyView.
Abstract Objectives Oat lipids are rich in ceramides. In this investigation, we analysed the delivery of a specific Oat Lipid Extract derived from Avena sativa, comprising ‘skin identical’ ratios of fatty acids, ceramides and cholesterol/sterol. This investigation is the first reported investigation of oat lipids utilizing Raman spectroscopy for the ...
E. Gombert, C. Dewis
wiley   +1 more source