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cleistanthus boivinianus/cáncer
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6 resultados
Cytotoxic and genotoxic effects of cleistanthin B in normal and tumour cells.
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Cleistanthin B, one of the toxic constituents of Cleistanthus collinus, was found to be cytotoxic to normal and tumour cells. In comparison with normal cells, tumour cells were sensitive to lower doses of toxin. The 50% growth inhibition (GI50) values for normal cell lines were from 2 x 10(-5) to
Antiproliferative Compounds from Cleistanthus boivinianus from the Madagascar Dry Forest.
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The two new lignans 3α-O-(β-D-glucopyranosyl)desoxypodophyllotoxin (1) and 4-O-(β-D-glucopyranosyl)dehydropodophyllotoxin (2) were isolated from Cleistanthus boivinianus, together with the known lignans deoxypicropodophyllotoxin (3), (±)-β-apopicropodophyllin (4), (-)-desoxypodophyllotoxin (5),
Anticancer potential of cleistanthin A isolated from the tropical plant Cleistanthus collinus.
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A diphyllin glycoside called cleistanthin A was isolated from the tropical plant Cleistanthus collinus and its anticancer potential was assessed. This compound showed preferential cytotoxicity in several tumor cell lines. The GI50 values for normal cell lines were between 10(-6) and 10(-7) M while
Biodistribution properties of cleistanthin A and cleistanthin B using magnetic resonance imaging in a normal and tumoric animal model.
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OBJECTIVE
To determine the biodistribution properties of cleistanthin A and cleistanthin B in rodents using magnetic resonance imaging (MRI).
METHODS
Cleistanthins A and B, constituents of Cleistanthus collinus Roxb., were labelled with gadolinium (Gd(3+)) directly and injected into normal and
Effects of diphyllin as a novel V-ATPase inhibitor on gastric adenocarcinoma.
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The natural compound diphyllin, a cytostatic lignan isolated from Cleistanthus collinus, can dramatically inhibit the proliferation and induce the apoptosis of human gastric cancer cells, SGC7901. Our study found that diphyllin can inhibit the expression of V-ATPases in a dose-dependent manner,
Cytotoxic lignans from fruits of Cleistanthus indochinensis: synthesis of cleistantoxin derivatives.
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Two new aryl-tetralin lignans, 1 and 2, were isolated from the fruits of Cleistanthus indochinensis by bioassay-guided purification. Their structures were determined by spectroscopic analysis including MS and 2D NMR. The absolute configurations of 1 and 2 were established from examination of their
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