P. Viani

Publications120
h-index25
Citations2,180
Highly Influential Citations57
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Extracellular release of newly synthesized sphingosine‐1‐phosphate by cerebellar granule cells and astrocytes
Sphingosine‐1‐phosphate (S1P) is a potent biomediator that can act as either an intracellular or an intercellular messenger. In the nervous system it exerts a wide range of actions, and specific… Expand
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Microvesicles released from microglia stimulate synaptic activity via enhanced sphingolipid metabolism
Microvesicles (MVs) released into the brain microenvironment are emerging as a novel way of cell‐to‐cell communication. We have recently shown that microglia, the immune cells of the brain, shed MVs… Expand
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Salvage pathways in glycosphingolipid metabolism.
In this review, the focus is on the role of salvage pathways in glycosphingolipid, particularly, ganglioside metabolism. Ganglioside de novo biosynthesis, that begins with the formation of ceramide… Expand
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Ceramide traffic in C6 glioma cells: evidence for CERT-dependent and independent transport from ER to the Golgi apparatus.
Intracellular movements of ceramide are strongly limited by its hydrophobic nature, and the mechanisms involved in ceramide transport can represent a crucial aspect of sphingolipid metabolism and… Expand
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The role of sphingolipids in the process of signal transduction.
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Sphingosine‐1‐phosphate is released by cerebellar astrocytes in response to bFGF and induces astrocyte proliferation through Gi‐protein‐coupled receptors
The mitogenic role of sphingosine‐1‐phosphate (S1P) and its involvement in basic fibroblast growth factor (bFGF)‐induced proliferation were examined in primary cultures of cerebellar astrocytes.… Expand
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Glucosylceramide Synthase Protects Glioblastoma Cells Against Autophagic and Apoptotic Death Induced by Temozolomide and Paclitaxel
Glioblastoma is a deadly cancer with intrinsic chemoresistance. Understanding this property will aid in therapy. Glucosylceramide synthase (GCS) is associated with resistance and poor outcome; little… Expand
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Sphingosine-1-Phosphate (S1P) Impacts Presynaptic Functions by Regulating Synapsin I Localization in the Presynaptic Compartment
Growing evidence indicates that sphingosine-1-P (S1P) upregulates glutamate secretion in hippocampal neurons. However, the molecular mechanisms through which S1P enhances excitatory activity remain… Expand
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Extracellular Sphingosine-1-Phosphate: A Novel Actor in Human Glioblastoma Stem Cell Survival
Glioblastomas are the most frequent and aggressive intracranial neoplasms in humans, and despite advances and the introduction of the alkylating agent temozolomide in therapy have improved patient… Expand
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Sphingolipid transport.
Sphingolipids are a family of ubiquitous membrane components that exhibit multiple functional properties fundamental to cell properties. Sphingolipid transport represents a crucial aspect in the… Expand
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