The aim of the present study was to evaluate the potential anticancer action of extracts prepared from german chamomile (Matricaria recutita L.)and pot marigold (Calendula officinalis L.) to human melanoma and epidermoid carcinoma cells. Sulforhodamine B assay was used to measure the cytotoxic activity of methanolic extracts from flowers of chamomile and marigold. The cytotoxic activity of extr...

Plant materials were used for the treatment of malignant diseases for centuries. Various studies on plant extract which have a suitable history of use in folklore for the treatment of cancer had often resulted in the isolation of principles with anti-tumour activity. In the present study, the anti-proliferative effect of acetone and methanol bark extracts of Adenanthera pavonina on three cancer...

MG and SRB aptamers, which are short RNA sequences originally selected only for binding to malachite green or sulforhodamine B, can greatly enhance the fluorescence of normally nonfluorescent triphenylmethane dyes. MG aptamer enhances the quantum yields of malachite green (MG) and a novel rigidized derivative, indolinyl malachite green (IMG) by >2000-fold. SRB aptamer brightens patent blue V an...

Liposomes entrapping the dye sulforhodamine B were used to develop an assay for anticardiolipin antibodies (ACAs). In the presence of magnesium ions, IgG ACAs induced liposomal lysis and the resulting absorbance changes were dependent on the amount of ACAs present. The liposomal assay (y) showed similar intraassay imprecision and detection limit to an ELISA for IgG ACAs (x), with a correlation ...

Triterpenoic acids show many pharmacological effects, among them an antiinflammatory or an antitumor activity. One of these, glycyrrhetinic acid (1) is of interest because of its antitumor profile. Glycyrrhetinic acid is not only cytotoxic but also triggers apoptosis in various human tumor cell lines. To improve the cytotoxicity of parent 1 we set out to synthesize new derivatives of it--differ...

To evaluate the in vitro anticancer activity and to investigate the mechanism of action of a thiophene heterocyclic compound, [3-Amino-5-[(2,6-dimethylphenyl)amino]-4-(phenylsulfonyl)-2-thienyl](4-fluorophenyl)methanone (APTM) against human colon cancer HCT116 cells. Sulforhodamine B assay and colony formation assay for cell proliferation assay; propidium iodide (PI) staining for cell cycle pro...

Abstract Background Cancer is the leading cause of morbidity and mortality worldwide. It encompasses a large family diseases exhibiting abnormal cell growth with potential to invade or spread other part body. Natural extracts have been used as an efficient anticancer agent that show promising results. In this, study cytotoxicity effect Ayurvedic herbal extract code name V2S2 was studied compare...

Fluorescence imaging using FM 1-43 and related styryl dyes has provided invaluable insights into presynaptic function of synapses in culture preparations, but has been limited in use for studying central synapses in vivo or in brain slices, because of excessive fluorescence background due to nonspecific membrane binding of dye. We demonstrate here that focal excitation of FM dyes using two-phot...

The transfer mechanism of an amphoteric rhodamine, sulforhodamine 101 (SR101), across the polarized water/1,2-dichloroethane (DCE) interface was investigated using cyclic voltammetry, differential voltfluorometry and potential-modulated fluorescence (PMF) spectroscopy. The voltammetric response for the ion transfer of SR101 monoanion from water to DCE was observed as the diffusion-controlled tr...

A series of 1,4-dihydropyrimidine derivatives 3(a-t) were prepared from Biginelli reactions by using ethyl acetoacetate, substituted benzaldehyde and thiourea in the presence of piperidine and ethanol. The compounds 3(a-t) were reacted with dimethylsulphate, diethylsulphate, butyl bromide and benzyl chloride to give the new series of compounds 4(a-t). The structures of the newly synthesized com...