Results 71 to 80 of about 945,743 (288)

High and stable ATP levels prevent aberrant intracellular protein aggregation in yeast

open access: yeseLife, 2022
Adenosine triphosphate (ATP) at millimolar levels has recently been implicated in the solubilization of cellular proteins. However, the significance of this high ATP level under physiological conditions and the mechanisms that maintain ATP remain unclear.
Masak Takaine   +2 more
doaj   +1 more source

Increased Adenine Nucleotide Degradation in Skeletal Muscle Atrophy [PDF]

open access: yes, 2019
Adenine nucleotides (AdNs: ATP, ADP, AMP) are essential biological compounds that facilitate many necessary cellular processes by providing chemical energy, mediating intracellular signaling, and regulating protein metabolism and solubilization.
Brault, Jeffrey J.   +2 more
core   +1 more source

Rapid Detection of Enterohaemorrhagic E.coli Using Phage-Based Bioluminescent Assay [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2018
Introduction: There is a need for a reliable, time-saving, and specific detection assay for coliforms, environmental E. coli, and Enterobacteriaceae worldwide. Aim: To innovate a new principle of phage-based rapid diagnostic test for detecting E.
Sabah AA Jassim   +3 more
doaj   +1 more source

Localized Activation of Bending in Proximal, Medial and Distal Regions of Sea-Urchin Sperm Flagella [PDF]

open access: yes, 1973
Spermatozoa from the sea urchin, Colobocentrotus atratus, were partially demembranated by extraction with solutions containing Triton X-100 at a concentration which was insufficient to solubilize the membranes completely.
Brokaw, C. J., Gibbons, I. R.
core  

Event Timing in Associative Learning [PDF]

open access: yes, 2012
Associative learning relies on event timing. Fruit flies for example, once trained with an odour that precedes electric shock, subsequently avoid this odour (punishment learning); if, on the other hand the odour follows the shock during training, it is ...
Herz, Andreas V. M.   +3 more
core   +1 more source

Serotonergic signals enhanced hamster sperm hyperactivation

open access: yesThe Journal of Reproduction and Development, 2021
In the present study, we investigated the regulatory mechanisms underlying sperm hyperactivation enhanced by 5-hydroxytryptamine (5-HT) in hamsters. First, we examined the types of 5-HT receptors that regulate hyperactivation.
Chiyori SAKAMOTO   +3 more
doaj   +1 more source

Time Course of the Increase in the Myocardial Slow Inward Current after a Photochemically Generated Concentration Jump of Intracellular cAMP [PDF]

open access: yes, 1983
Voltage-clamped atrial trabeculae from bullfrog hearts were exposed to membrane-permeant photolyzable o-nitrobenzyl esters of cAMP and cGMP. UV flashes produced intracellular concentration jumps of cAMP or cGMP. With the cAMP derivative, flashes resulted
Engels, Joachim   +3 more
core   +1 more source

Reversal of age-related learning deficiency by the vertebrate PACAP and IGF-1 in a novel invertebrate model of aging: the pond snail (Lymnaea Stagnalis) [PDF]

open access: yes, 2014
With the increase of life span, nonpathological age-related memory decline is affecting an increasing number of people. However, there is evidence that age-associated memory impairment only suspends, rather than irreversibly extinguishes, the intrinsic ...
Alexander   +38 more
core   +2 more sources

High-fat diet induces protein kinase A and G-protein receptor kinase phosphorylation of β2 -adrenergic receptor and impairs cardiac adrenergic reserve in animal hearts. [PDF]

open access: yes, 2017
Key pointsPatients with diabetes show a blunted cardiac inotropic response to β-adrenergic stimulation despite normal cardiac contractile reserve. Acute insulin stimulation impairs β-adrenergically induced contractile function in isolated cardiomyocytes ...
Chiamvimonvat, Nipavan   +8 more
core   +2 more sources

Energy Metabolic Plasticity of Colorectal Cancer Cells as a Determinant of Tumor Growth and Metastasis

open access: yesFrontiers in Oncology, 2021
Metabolic plasticity is the ability of the cell to adjust its metabolism to changes in environmental conditions. Increased metabolic plasticity is a defining characteristic of cancer cells, which gives them the advantage of survival and a higher ...
Leenu Reinsalu   +12 more
doaj   +1 more source

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