Results 51 to 60 of about 33,576 (274)

Inosine‐Triphosphate‐Pyrophosphatase Activity as a Potential Predictor of Methotrexate Remission in Juvenile Idiopathic Arthritis

Arthritis &Rheumatology, EarlyView.
Objective Methotrexate (MTX) is the first‐line therapy for juvenile idiopathic arthritis (JIA), but up to 40% of patients do not respond to it. Low inosine triphosphate pyrophosphatase (ITPA) activity has been associated with reduced clinical remission. We investigated the role and underlying mechanisms of ITPA in vitro. Methods ITPA enzymatic activity
Sofia Sindici Forgiarini, Marianna Lucafò, Debora Curci, Davide Selvestrel, Valentina Moressa, Sofia Pagarin, Barbara Bellich, Martina Franzin, Alberto Tommasini, Mara L. Becker, Laura B. Ramsey, Susan D. Thompson, Carl D. Langefeld, Federica Corba, Edoardo Marrani, Gabriele Simonini, Gabriele Stocco, Giuliana Decorti, Andrea Taddio, Serena Pastore   +19 more
wiley   +1 more source

Co-localization and confinement of ecto-nucleotidases modulate extracellular adenosine nucleotide distributions.

PLoS Computational Biology, 2020
Nucleotides comprise small molecules that perform critical signaling roles in biological systems. Adenosine-based nucleotides, including adenosine tri-, di-, and mono-phosphate, are controlled through their rapid degradation by diphosphohydrolases and ...
Hadi Rahmaninejad, Tom Pace, Shashank Bhatt, Bin Sun, Peter Kekenes-Huskey   +4 more
doaj   +1 more source

PrEP at the site of action in cisgender and transgender women: A pharmacology study of blood and rectal CD4+ lymphocytes

British Journal of Clinical Pharmacology, EarlyView.
Background Female sex hormones used in feminizing hormone therapy (FHT) may influence activation and persistence of HIV pre‐exposure prophylaxis (PrEP) medications. The clinical relevance of this interaction remains unclear, particularly for transgender and cisgender women (TGW and CGW).
Elizabeth Hastie, Megha Srivasta, Edward R. Cachay, Leah Burke, Sara Gianella, Stephen Rawlings, Frank Z. Stanczyk, Craig Sykes, Angela D. M. Kashuba, Jill Blumenthal, Mackenzie L. Cottrell   +10 more
wiley   +1 more source

A neutrophil-dependent pathway for the generation of a neutral peptide mediator: partial characterization of components and control by alpha-1-antitrypsin. [PDF]

, 1974
A biologically active neutral peptide mediator is cleaved from a plasma protein substrate by an alpha-1-antitrypsin-inhibitable serine protease apparently residing on the membrane of the human neutrophil. The peptide mediator has an approximate mol wt of
Austen, KF, Goetzl, EJ, Wintroub, BU
core  

Energy metabolism, adenosine, and glutamate signaling reprogramming by decanoic acid in Glut1 disorder syndrome

Epilepsia Open, EarlyView.
Abstract Glut1 deficiency syndrome (Glut1DS) leads to neurological and cognitive symptoms and is primarily treated using carbohydrate‐restricted ketogenic diets. However, a recent clinical trial of a less restrictive, non‐ketogenic, medium chain triglyceride (MCT) diet with a high decanoic acid content suggests efficacy in Glut1DS treatment.
Erwann Pain, Yatra Kapatel, Pankaj K. Singh, Katie Lloyd Jones, Jamuna Selvakumaran, Alberto Malerba, Walter Lucchesi, Tricia Rutherford, Christina A. Gurnett, Matthew C. Walker, Robin S. B. Williams   +10 more
wiley   +1 more source

Deficits in Endogenous Adenosine Formation by Ecto-5′-Nucleotidase/CD73 Impair Neuromuscular Transmission and Immune Competence in Experimental Autoimmune Myasthenia Gravis

Mediators of Inflammation, 2015
AMP dephosphorylation via ecto-5′-nucleotidase/CD73 is the rate limiting step to generate extracellular adenosine (ADO) from released adenine nucleotides. ADO, via A2A receptors (A2ARs), is a potent modulator of neuromuscular and immunological responses.
Laura Oliveira, Alexandra Correia, Ana Cristina Costa, Sónia Guerra-Gomes, Fátima Ferreirinha, Maria Teresa Magalhães-Cardoso, Manuel Vilanova, Paulo Correia-de-Sá   +7 more
doaj   +1 more source

Increased CD39 nucleotidase activity on microparticles from patients with idiopathic pulmonary arterial hypertension. [PDF]

PLoS ONE, 2012
BACKGROUND:Idiopathic pulmonary arterial hypertension (IPAH) is a devastating disease characterized by increased pulmonary vascular resistance, smooth muscle and endothelial cell proliferation, perivascular inflammatory infiltrates, and in situ ...
Scott H Visovatti, Matthew C Hyman, Diane Bouis, Richard Neubig, Vallerie V McLaughlin, David J Pinsky   +5 more
doaj   +1 more source

Upregulation of inducible NO synthase by exogenous adenosine in vascular smooth muscle cells activated by inflammatory stimuli in experimental diabetes [PDF]

, 2016
BACKGROUND: Adenosine has been shown to induce nitric oxide (NO) production via inducible NO synthase (iNOS) activation in vascular smooth muscle cells (VSMCs). Although this is interpreted as a beneficial vasodilating pathway in vaso-occlusive disorders,
Cignarella, Andrea, Gaion, ROSA MARIA, Malorgio, Francesca, Nassi, Alberto, Tedesco, Serena   +4 more
core   +2 more sources

Synergistic Effect of Hesperidin, Acarbose, and Exercise Combination on Neuroinflammation and Neurochemical Alterations in Diabetic Encephalopathy Rat Model

Food Chemistry International, EarlyView.
Diabetic encephalopathy (DME) impairs neurobehavior, neurochemicals, oxidative stress, and inflammation. This study evaluated the effects of hesperidin (HSP), exercise (EX), and acarbose (ACA) alone or combined on diabetic rats. Treatments reduced AChE, BChE, ACE, arginase, ATPDase, 5′‐nucleotidase, ADA, LDH, TBARS, and ROS, while increasing IL‐10, SOD,
Idowu Sunday Oyeleye, Olajide Raymond Ojo, Taiwo Olawale Adeleke, Adeyinka Sunday Ajeigbe, Mercy Gladys Tenywa, Oboh Ganiyu   +5 more
wiley   +1 more source

A Note on Serum Nucleotidase Determinations [PDF]

Clinical Chemistry and Laboratory Medicine, 1971
Current methods for estimating 5'-nucleotidase activity in human serum are critically discussed. The requirements for specificity in the assay procedure are re-emphasised, special consideration being given to the absolute concentrations as well as the molar ratios of true and alternative substrates.
Belfield, A., GOLDBERG, D. M.
openaire   +2 more sources