Results 71 to 80 of about 42,131 (286)

Dunce mutants of Drosophila melanogaster: mutants defective in the cyclic AMP phosphodiesterase enzyme system [PDF]

open access: yes, 1981
The cyclic AMP and cyclic GMP phosphodiesterase activities present in flies of six mutant strains of the dunce gene and in the parent wild- type strains are characterized. All of the mutants exhibit aberrant cyclic AMP metabolism.
Davis, Ronald L., Kiger, John A., Jr.
core   +1 more source

First‐line serplulimab plus chemotherapy in extensive‐stage small‐cell lung cancer: Updated results and biomarker analysis from the ASTRUM‐005 randomized clinical trial

open access: yesCancer Communications, EarlyView.
Abstract Background The ASTRUM‐005 study previously demonstrated a significant overall survival (OS) benefit with serplulimab (a programmed death 1 inhibitor) plus chemotherapy versus chemotherapy alone in previously untreated extensive‐stage small‐cell lung cancer (ES‐SCLC).
Ying Cheng   +32 more
wiley   +1 more source

2′-3′-Cyclic Nucleotide 3′-Phosphodiesterase Inhibition by Organometallic Vanadium Complexes: A Potential New Paradigm for Studying CNS Degeneration

open access: yesBrain Sciences, 2021
The enzyme, 2′-3′-cyclic nucleotide 3′-phosphodiesterase (CNPase) has been known for over fifty years. Nevertheless, the roles this membrane-bound enzyme play have yet to be described completely.
David C. Platt   +4 more
doaj   +1 more source

Regulation of intracellular cyclic GMP concentration by light and calcium in electropermeabilized rod photoreceptors. [PDF]

open access: yes, 1994
This study examines the regulation of cGMP by illumination and by calcium during signal transduction in vertebrate retinal photoreceptor cells. We employed an electropermeabilized rod outer segment (EP-ROS) preparation which permits perfusion of low ...
Coccia, V J, Cote, Rick H.
core   +2 more sources

N6‐methyladenosine‐regulated exosome biogenesis orchestrates an immunosuppressive pre‐metastatic niche in gastric cancer peritoneal metastasis

open access: yesCancer Communications, EarlyView.
Abstract Background Gastric cancer peritoneal metastasis is clinically challenging, given the limited treatment options and poor prognosis. The molecular mechanisms that precede gastric cancer peritoneal metastasis, known as the pre‐metastatic niche (PMN), and its relationship with N6‐methyladenosine (m6A) modification remain unclear.
Song Li   +23 more
wiley   +1 more source

Phosphodiesterase 1b (PDE1B) Regulates Spatial and Contextual Memory in Hippocampus

open access: yesFrontiers in Molecular Neuroscience, 2019
Augmentation of cyclic nucleotide signaling through inhibition of phosphodiesterase (PDE) activity has long been understood to enhance memory. Efforts in this domain have focused predominantly on PDE4, a cAMP-specific phosphodiesterase implicated in ...
Susan McQuown   +7 more
doaj   +1 more source

Intracellular Concentrations of Borrelia burgdorferi Cyclic Di-AMP Are Not Changed by Altered Expression of the CdaA Synthase. [PDF]

open access: yesPLoS ONE, 2015
The second messenger nucleotide cyclic diadenylate monophosphate (c-di-AMP) has been identified in several species of Gram positive bacteria and Chlamydia trachomatis. This molecule has been associated with bacterial cell division, cell wall biosynthesis
Christina R Savage   +7 more
doaj   +1 more source

Second messenger systems underlying amine and peptide actions on cardiac muscle in the horseshoe crab, Limulus polyphemus [PDF]

open access: yes, 1989
The biochemical mechanisms by which octopamine, catecholamines and the peptide proctolin exert their actions on Limulus cardiac muscle were investigated.
Groome, J. R., Watson, Winsor H., III
core   +2 more sources

Targeting protein–protein interactions within the cyclic AMP signaling system as a therapeutic strategy for cardiovascular disease [PDF]

open access: yes, 2013
The cAMP signaling system can trigger precise physiological cellular responses that depend on the fidelity of many protein–protein interactions, which act to bring together signaling intermediates at defined locations within cells.
Brunton   +8 more
core   +1 more source

A Fluorescence Polarization Assay for Cyclic Nucleotide Phosphodiesterases [PDF]

open access: yesJournal of Biomolecular Screening, 2002
Cyclic nucleotide phosphodiesterases (PDEs) catalyze the hydrolysis of the 3'-ester bond of cyclic AMP (cAMP) and cyclic GMP (cGMP), important second messengers in the transduction of a variety of extracellular signals. There is growing interest in the study of PDEs as drug targets for novel therapeutics.
Wei Huang   +2 more
openaire   +3 more sources

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