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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
OBJECTIVE
To investigate the toxicological effects of cleistanthin A and cleistanthin B using sub-chronic toxicity testing in rodents.
METHODS
Cleistanthins A and B were isolated from the leaves of Cleistanthus collinus. Both the compounds were administered orally for 90 days at the concentration of
To study the diuretic effects of cleistanthin A and cleistanthin B, phytoconstituents were isolated from the leaves of Cleistanthus collinus in Wistar rats. The in vivo diuretic effects of cleistanthins A and B were determined according to the Lipschitz test. Prior to the experiment, the animals
OBJECTIVE
To investigate the involvement of alpha adrenergic receptors in hypotension induced by cleistanthin A and cleistanthin B.
METHODS
Cleistanthins A and B were isolated from the leaves of Cleistanthus collinus using a column chromatographic method and purified. Structures were confirmed by
Cleistanthus collinus is an extremely toxic plant poison. Cleistanthin A and B, the toxins of Cleistanthus collinus, are diphyllin glycosides which produce cardiac arrhythmias, urinary potassium wasting, hypoxia, metabolic acidosis and hypotension. We report ARDS, distal renal tubular acidosis and
Cleistanthus collinus is an extremely toxic plant poison. We report a case of suicidal ingestion of boiled water decoction of C. collinus where the patient presented with abdominal pain and giddiness. There was persistent metabolic acidosis and fluctuation in the level of serum potassium. The ECG
A method is reported for the solid-state fluorodensitometric determination of haptens in hapten-protein conjugates. The applicability of the method is shown using the bovine serum albumin conjugate of cleistanthin B, a toxic glycoside of the plant Cleistanthus collinus. This non-destructive
Cleistanthus collinus is a highly toxic plant frequently implicated in suicidal and homicidal poisoning cases referred to our laboratory. An enzyme-linked immunosorbent assay (ELISA) is reported in this paper for the quantitation of the active principles of C. collinus. This method is highly
Cleistanthin A is a novel anticancer agent isolated from Cleistanthus collinus (Rox B). It caused chromatid aberrations in a dose dependent manner. However, the concentrations that induced the aberrations, neither affected viability nor induced DNA strand breaks. Only at higher concentrations and
We have studied the effects of cleistanthin A and cleistanthin B, phytoconstituents isolated from the leaves of Cleistanthus collinus Roxb. (Euphorbiaceae), on blood pressure, electrocardiogram, and barium chloride-induced arrhythmia in Wistar rats. The two compounds were isolated by column
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
Enzyme-linked immunosorbent assay is reported for the estimation of cleistanthin A, a major constituent of the toxic plant Cleistanthus collinus. Rabbit antibodies were obtained by immunisation with cleistanthin A hemisuccinate-BSA conjugate and the ELISA developed thereupon could detect
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
Cleistanthin B is a potential anticancer agent isolated from the tropical plant Cleistanthus collinus. We have previously shown that cleistanthin B is clastogenic and induces micronuclei formation and chromosomal aberrations. We now show that this compound inhibits DNA synthesis in Chinese hamster