A. Zampella

Publications186
h-index34
Citations3,375
Highly Influential Citations70
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Bile Acids Activated Receptors Regulate Innate Immunity
Once known exclusively for their role in nutrients absorption, primary bile acids, chenodeoxycholic and cholic acid, and secondary bile acids, deoxycholic and lithocholic acid, are signaling… Expand
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Theonellasterols and conicasterols from Theonella swinhoei. Novel marine natural ligands for human nuclear receptors.
Silica gel column chromatography, followed by HPLC purification on the apolar fraction of the methanol extract of marine sponge Theonella swinhoei, resulted in the isolation of a library of 10… Expand
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Discovery That Theonellasterol a Marine Sponge Sterol Is a Highly Selective FXR Antagonist That Protects against Liver Injury in Cholestasis
Background The farnesoid-x-receptor (FXR) is a bile acid sensor expressed in the liver and gastrointestinal tract. Despite FXR ligands are under investigation for treatment of cholestasis, a… Expand
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BAR502, a dual FXR and GPBAR1 agonist, promotes browning of white adipose tissue and reverses liver steatosis and fibrosis
Non-alcoholic steatohepatitis (NASH) is a highly prevalent chronic liver disease. Here, we have investigated whether BAR502, a non-bile acid, steroidal dual ligand for FXR and GPBAR1, reverses… Expand
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Homophymine A, an anti-HIV cyclodepsipeptide from the sponge Homophymia sp.
A new anti-HIV cyclodepsipeptide, homophymine A, was isolated from a New Caledonian collection of the marine sponge Homophymia sp. The structure of homophymine A was determined by interpretation of… Expand
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Homophymines B-E and A1-E1, a family of bioactive cyclodepsipeptides from the sponge Homophymia sp.
Nine new cyclodepsipeptides, homophymines B-E (2-5) and A1-E1 (1a-5a), were isolated from the polar extracts of the sponge Homophymia sp. The new structures, featuring new polyketide-derived end… Expand
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Design, synthesis, and biological evaluation of potent dual agonists of nuclear and membrane bile acid receptors.
Bile acids exert genomic and nongenomic effects by interacting with membrane G-protein-coupled receptors, including the bile acid receptor GP-BAR1, and nuclear receptors, such as the farnesoid X… Expand
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Solomonsterols A and B from Theonella swinhoei. The first example of C-24 and C-23 sulfated sterols from a marine source endowed with a PXR agonistic activity.
The finding of new PXR modulators as potential leads for treatment of human disorders characterized by dysregulation of innate immunity and with inflammation is of wide interest. In this paper, we… Expand
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The Bile Acid Receptor GPBAR1 Regulates the M1/M2 Phenotype of Intestinal Macrophages and Activation of GPBAR1 Rescues Mice from Murine Colitis
GPBAR1 (TGR5 or M-BAR) is a G protein–coupled receptor for secondary bile acids that is highly expressed in monocytes/macrophages. In this study, we aimed to determine the role of GPBAR1 in mediating… Expand
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Conicasterol E, a small heterodimer partner sparing farnesoid X receptor modulator endowed with a pregnane X receptor agonistic activity, from the marine sponge Theonella swinhoei.
We report the isolation and pharmacological characterization of conicasterol E isolated from the marine sponge Theonella swinhoei. Pharmacological characterization of this steroid in comparison to… Expand
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