Results 51 to 60 of about 110,603 (210)

Influence of Histamine on Adenosine Triphosphatase

open access: yesExperimental Biology and Medicine, 1948
In all snake venoms hitherto investigated a powerful ATP-ase (ophio-ATP-ase) has been found, which is activated by magnesium, calcium and cobalt ions and inhibited by zinc ions.1,2 Histamine and pyridoxamine act as inhibitors, epinephrine as activator.The question arose as to whether similar reactions take place in the animal tissues and thus ...
openaire   +2 more sources

Clinical predictors of response to methotrexate in patients with rheumatoid arthritis: A systematic review

open access: yesRheumatology &Autoimmunity, EarlyView.
This review integrates clinical, immunological, genetic, and multi‐omic evidence, highlighting dynamic inflammatory and adenosine‐pathway biomarkers and reinforcing treat‐to‐target principles as the most actionable framework for personalized methotrexate therapy.
Joana Ramos Rodrigues   +6 more
wiley   +1 more source

Stimulation of glia reveals modulation of mammalian spinal motor networks by adenosine [PDF]

open access: yes, 2015
This work was funded by the Wellcome Trust Institutional Strategic Support Fund for University of St. Andrews.Despite considerable evidence that glia can release modulators to influence the excitability of neighbouring neurons, the importance of ...
Miles, Gareth B.   +6 more
core   +2 more sources

CD36‐mediated lipid rewiring in the metabolic adaptation of tumour ecosystems

open access: yesThe FEBS Journal, EarlyView.
Nutrient deprivation drives a lipid‐centric shift in tumour metabolic symbiosis and signalling network. CD36 functions as a bidirectional bridge, transferring fatty acids from stromal donors (adipocytes, CAFs) to the ecosystem tumour‐ and microenvironment‐dependently.
Anna Sebestyén   +11 more
wiley   +1 more source

Wakefulness affects synaptic and network activity by increasing extracellular astrocyte-derived adenosine [PDF]

open access: yes, 2012
Loss of sleep causes an increase in sleep drive and deficits in hippocampal-dependent memory. Both of these responses are thought to require activation of adenosine A1 receptors (adorA1Rs) and release of transmitter molecules including ATP, which is ...
Schmitt, L. Ian   +9 more
core   +1 more source

UbiB proteins mediate an ATP‐dependent decarboxylation step in bacterial ubiquinone biosynthesis

open access: yesThe FEBS Journal, EarlyView.
UbiB proteins are atypical protein kinase‐like enzymes essential for ubiquinone biosynthesis. Here, we demonstrate that bacterial UbiB proteins catalyze the O2‐dependent decarboxylation of ubiquinone precursors, a process linked to their ATPase activity.
Katayoun Kazemzadeh   +12 more
wiley   +1 more source

Photoresponsive adenosine derivatives for optical control of adenosine A2A receptor in living cells [PDF]

open access: yes, 2023
Subtype-selective ligands with photoswitchable properties are highly desired for photopharmacology of G protein-coupled receptors (GPCRs). We developed photoswitchable ligands targeting adenosine A2A receptor (A2AR), a GPCR subtype.
Tsuyoshi, Araya   +7 more
core   +2 more sources

Distribution of Ca-ATPases in the Medial Habenula in Mouse [PDF]

open access: yes, 1994
The aim of this study was to investigate the distribution of the ecto-Ca,Mg-adenosine-triphosphatases (ecto-Ca,Mg-ATPases) in the medial habenular nucleus.
Kittel, A.
core   +1 more source

Membrane transporter genes predict chemoradiotherapy response in patients with cervical cancer [PDF]

open access: yesEinstein (São Paulo)
Introduction: Cervical cancer is the fourth most common cancer in women worldwide. Resistance to chemoradiotherapy in cervical cancer has been widely associated with membrane transport-related genes, particularly those encoding efflux transport proteins,
Natália Gregório Custódio   +10 more
doaj   +1 more source

Kinetics and regulation of the myofibrillar adenosine triphosphatase [PDF]

open access: yesBiochemical Journal, 1978
1. The steady-state kinetic behaviour of the ATPase (adenosine triphosphatase) of intact myofibrils was studied in the presence of both high and low concentrations of Ca2+ (0.25 mM and less than 10 nM respectively). 2. Kinetic data were collected over the initial linear phase of the assay, which lasts for 20–60s.
C C, Goodno, C M, Wall, S V, Perry
openaire   +2 more sources

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