Results 21 to 30 of about 217,248 (344)

A dual regulation mechanism of histidine kinase CheA identified by combining network-dynamics modeling and system-level input-output data. [PDF]

open access: yesPLoS Computational Biology, 2018
It is challenging to decipher molecular mechanisms in biological systems from system-level input-output data, especially for complex processes that involve interactions among multiple components.
Bernardo A Mello   +3 more
doaj   +1 more source

ATP- and Adenosine-Mediated Signaling in the Central Nervous System: Adenosine Receptor Activation by ATP Through Rapid and Localized Generation of Adenosine by Ecto-nucleotidases

open access: yesJournal of Pharmacological Sciences, 2004
Extracellular ATP is now recognized as a neurotransmitter or neuromodilator in the nervous system, producing diverse physiological effects by activating multiple P2 receptors.
Isao Matsuoka, Satoko Ohkubo
doaj   +1 more source

Alzheimer and Purinergic Signaling: Just a Matter of Inflammation?

open access: yesCells, 2021
Alzheimer’s disease (AD) is a widespread neurodegenerative pathology responsible for about 70% of all cases of dementia. Adenosine is an endogenous nucleoside that affects neurodegeneration by activating four membrane G protein-coupled receptor subtypes,
Stefania Merighi   +5 more
doaj   +1 more source

Modelling and analysis of biochemical signalling pathway cross-talk [PDF]

open access: yes, 2010
Signalling pathways are abstractions that help life scientists structure the coordination of cellular activity. Cross-talk between pathways accounts for many of the complex behaviours exhibited by signalling pathways and is often critical in producing ...
Emanuela Merelli   +3 more
core   +5 more sources

Variation in the Thyrotropic Activity of Human Chorionic Gonadotropin in Chinese Hamster Ovary Cells Arises from Differential Expression of the Human Thyrotropin Receptor and Microheterogeneity of the Hormone. [PDF]

open access: yes, 1995
The role of hCG as a stimulator of the human thyroid has been a subject of controversy, because discrepant results have been obtained in different in vitro assays.
Amir, S.M.   +4 more
core   +1 more source

Structural insights into the broad protection against H1 influenza viruses by a computationally optimized hemagglutinin vaccine

open access: yesCommunications Biology, 2023
Influenza virus poses an ongoing human health threat with pandemic potential. Due to mutations in circulating strains, formulating effective vaccines remains a challenge. The use of computationally optimized broadly reactive antigen (COBRA) hemagglutinin
John V. Dzimianski   +12 more
doaj   +1 more source

Hepatic and Extrahepatic Insulin Clearance in Mice with Double Deletion of Glucagon-Like Peptide-1 and Glucose-Dependent Insulinotropic Polypeptide Receptors

open access: yesBiomedicines, 2021
The aim of this study was to investigate whether incretins, at physiological levels, affect hepatic and/or extrahepatic insulin clearance. Hepatic and extrahepatic insulin clearance was studied in 31 double incretin receptor knockout (DIRKO) and 45 wild ...
Micaela Morettini   +6 more
doaj   +1 more source

RAGs and Regulation of Autoantibodies [PDF]

open access: yes, 2004
Autoreactive antibodies are etiologic agents in a number of autoimmune diseases. Like all other antibodies these antibodies are produced in developing B cells by V(D)J recombination in the bone marrow.
Casellas, Rafael   +4 more
core   +1 more source

Axon regeneration after optic nerve injury in rats can be improved via PirB knockdown in the retina

open access: yesCell & Bioscience, 2021
Background In the central nervous system (CNS), three types of myelin-associated inhibitors (MAIs) exert major inhibitory effects on nerve regeneration: Nogo-A, myelin-associated glycoprotein (MAG), and oligodendrocyte-myelin glycoprotein (OMgp).
Mei Yang   +8 more
doaj   +1 more source

Differential spatial distribution of HNF4α isoforms during dysplastic progression of intraductal papillary mucinous neoplasms of the pancreas

open access: yesScientific Reports, 2023
Hepatocyte Nuclear Factor 4-alpha (HNF4α) comprises a nuclear receptor superfamily of ligand-dependent transcription factors that yields twelve isoforms in humans, classified into promoters P1 or P2-associated groups with specific functions.
Jahg Wong   +8 more
doaj   +1 more source

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