Results 11 to 20 of about 360,385 (255)

New Insights into Alzheimer’s Disease: Novel Pathogenesis, Drug Target and Delivery

open access: yesPharmaceutics, 2023
Alzheimer’s disease (AD), the most common type of dementia, is characterized by senile plaques composed of amyloid β protein (Aβ) and neurofilament tangles derived from the hyperphosphorylation of tau protein.
Haishu Chen   +7 more
doaj   +1 more source

Unconventional Pathways of Protein Secretion: Mammals vs. Plants

open access: yesFrontiers in Cell and Developmental Biology, 2022
In eukaryotes, many proteins contain an N-terminal signal peptide that allows their translocation into the endoplasmic reticulum followed by secretion outside the cell according to the classical secretory system. However, an increasing number of secreted
Elisa Maricchiolo   +5 more
doaj   +1 more source

Extracellular volume fraction using contrast-enhanced CT is useful in differentiating intrahepatic cholangiocellular carcinoma from hepatocellular carcinoma

open access: yesFrontiers in Oncology, 2023
ObjectivesTo evaluate whether tumor extracellular volume fraction (fECV) on contrast-enhanced computed tomography (CT) aids in the differentiation between intrahepatic cholangiocarcinoma (ICC) and hepatocellular carcinoma (HCC).MethodsIn this ...
T. Honda   +12 more
doaj   +1 more source

Diffusion in Brain Extracellular Space [PDF]

open access: yesPhysiological Reviews, 2008
Diffusion in the extracellular space (ECS) of the brain is constrained by the volume fraction and the tortuosity and a modified diffusion equation represents the transport behavior of many molecules in the brain. Deviations from the equation reveal loss of molecules across the blood-brain barrier, through cellular uptake, binding, or other mechanisms ...
Eva, Syková, Charles, Nicholson
openaire   +2 more sources

What Triggers the Interictal Epileptic Spike? A Multimodal Multiscale Analysis of the Dynamic of Synaptic and Non-synaptic Neuronal and Vascular Compartments Using Electrical and Optical Measurements

open access: yesFrontiers in Neurology, 2021
Interictal spikes (IISs) may result from a disturbance of the intimate functional balance between various neuronal (synaptic and non-synaptic), vascular, and metabolic compartments.
Cristian Arnal-Real   +4 more
doaj   +1 more source

Brain extracellular space as a diffusion barrier [PDF]

open access: yesComputing and Visualization in Science, 2011
The extracellular space (ECS) consists of the narrow channels between brain cells together with their geometrical configuration and contents. Despite being only 20-60 nm in width, the ECS typically occupies 20% of the brain volume. Numerous experiments over the last 50 years have established that molecules moving through the ECS obey the laws of ...
Charles Nicholson   +2 more
openaire   +2 more sources

The Lysosomal Sequestration of Tyrosine Kinase Inhibitors and Drug Resistance

open access: yesBiomolecules, 2019
The Lysosomal sequestration of weak-base anticancer drugs is one putative mechanism for resistance to chemotherapy but it has never been directly proven. We addressed the question of whether the lysosomal sequestration of tyrosine kinase inhibitors (TKIs)
Eliska Ruzickova   +4 more
doaj   +1 more source

Thimet Oligopeptidase—A Classical Enzyme with New Function and New Form

open access: yesImmuno, 2021
Peptidases generate bioactive peptides that can regulate cell signaling and mediate intercellular communication. While the processing of peptide precursors is initiated intracellularly, some modifications by peptidases may be conducted extracellularly ...
Yu Liu   +3 more
doaj   +1 more source

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