Chromosomal Aberration Test Utilities In Vitro and In Vivo

A series of studies was performed to evaluate the safety of dihydrocapsiate (4-hydroxy-3-methoxybenzyl 8-methylnonanoate; CAS no. 205687-03-2). This study evaluated the potential genotoxicity of this compound using a variety of in vitro and in vivo test systems, including bacterial reverse mutation test, chromosomal aberration test, micronucleus test, gene mutation assay with transgenic rats, and single-cell gel (SCG) assay (Comet assay). In vitro tests (bacterial reverse mutation test and chromosomal aberration test) produced positive results in the absence of metabolic activation, but negative results in the presence of metabolic activation. The in vivo gene mutation assay (with transgenic rats) produced negative results, as did the in vivo mouse micronucleus assay, which failed to induce micronucleated polychromatic erythrocytes. Although the rat SCG assay produced statistically significant increases in the Olive tail moment and % tail DNA of the liver and intestine in the 2000 mg/kg group (compared with the negative-control group), a number of factors caused the authors to question the validity of these findings. Taken together, these results suggest that dihydrocapsiate has a low or extremely low likelihood of inducing genotoxicity.

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Genotoxic property of poly herbal formulation of annona squomosa, zingiber officinalis and triticum aestivum plant extracts by in vitro chromosomal aberration test

International Journal of Research in Pharmaceutical Sciences ◽

10.26452/ijrps.v10i4.1662 ◽

2019 ◽

Vol 10 (4) ◽

pp. 3449-3460

Author(s):

Rajesh R ◽

Jagadeesh Singh S D ◽

Channabasava R

Keyword(s):

Triticum Aestivum ◽

Chromosomal Aberration ◽

Metabolic Activation ◽

Cho Cell ◽

Cellular Integrity ◽

Alternative Sources ◽

Chromosomal Aberration Test ◽

The One

The present study was aimed to evaluate the genotoxic potential of polyherbal formulations by chromosomal aberration test. Cancer being the second most cause of death among all ailments even after the improvised medications needs alternative sources of treatment. Herbal sources were always among the one as prime treatment sources. Polyherbal formulations were taking the lead in medications because of their broad spectrum of activity and synergic effects. Annona squamosa, Zingiber Officinalis, and Triticum Aestivum formulation with 1:2:3 ratio has shown significant results in the definitive and confirmatory chromosome aberration assays. Indicated the test article PF3 did not induce a statistically significant increase in the percentage of cells with aberrations both in the presence and absence of metabolic activation. PF3 was found non-clostagenic at a maximum dose of 15 µg/ml in the CHO cell line. Inhibition of chromosomal aberration, DNA fragmentation, and maintenance of cellular integrity may prevent the genotoxic effect. Further optimization and in vivo authenticated studies need to be proven.

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Evaluation of cytotoxicity and mutagenicity of the benzodiazepine flunitrazepam in vitro and in vivo

Brazilian Journal of Pharmaceutical Sciences ◽

10.1590/s1984-82502014000200003 ◽

2014 ◽

Vol 50 (2) ◽

pp. 251-256

Author(s):

Igor Vivian de Almeida ◽

Giovana Domingues ◽

Lilian Capelari Soares ◽

Elisângela Düsman ◽

Veronica Elisa Pimenta Vicentini

Keyword(s):

Rattus Norvegicus ◽

Bone Marrow Cells ◽

Micronucleus Test ◽

Term Treatment ◽

Genotoxic Effects ◽

Short Term ◽

Short Term Treatment ◽

Chromosomal Aberration Test

Flunitrazepam (FNZ) is a sedative benzodiazepine prescribed for the short-term treatment of insomnia. However, there are concerns regarding possible carcinogenic or genotoxic effects of this medicine. Thus, the aim of this study was to evaluate the cytotoxic, clastogenic and aneugenic effects of FNZ in hepatoma cells from Rattus norvegicus (HTC) in vitro and in bone marrow cells of Wistar rats in vivo. These effects were examined in vitro following treatment with 0.2, 1.0, 5.0 or 10 μg/mL FNZ using a micronucleus test with a cytokinesis block or in vivo using a chromosomal aberration test following treatment with 7, 15 or 30 μg/mL/kg body weight. The results showed that the benzodiazepine concentrations tested were not cytotoxic, aneugenic or clastogenic. However, considering the adverse effects of using this benzodiazepine, more studies are required.

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