Physiological and mutagenic effects of N-methyl-N′-nitro-N-nitrosoguanidine in populations of chlorococcal algae

1975 ◽  
Vol 17 (2) ◽  
pp. 130-138 ◽  
Author(s):  
J. Nečas
2002 ◽  
Vol 4 (1) ◽  
pp. 70-75 ◽  
Author(s):  
V. V. Stupina ◽  
Ye. V. Borisova
Keyword(s):  

2001 ◽  
Vol 95 (2) ◽  
pp. 232-235 ◽  
Author(s):  
Andrew J. Martin ◽  
Christopher J. Hammond ◽  
H. Jane Dobbs ◽  
Safa Al-Sarraj ◽  
Nicholas W. M. Thomas

✓ Long-term survivors of Hodgkin disease may develop second primary tumors caused by the mutagenic effects of radio- and chemotherapy. The authors describe the case of a 35-year-old woman who presented with an unusual meningioma of the cervical spine 9 years after undergoing combined-modality treatment for Hodgkin disease. To the authors' knowledge, this is the first report of spinal meningioma as a complication of such therapy. Whereas radiation-induced intracranial meningiomas are well described in the literature, treatment-induced meningiomas of the spine have not been widely recognized.


2020 ◽  
pp. 1-4
Author(s):  
CHARULATA SIVODIA ◽  
ALOK SINHA

The advancement made in biomedical industry upsurges the consumption rate of pharmaceutical drugs. The lack of proper monitoring and regulation methods leads to the unregulated discharge of pharmaceuticals in wastewater, where it can affect the aquatic organisms. Anticancer drugs are also known as cytostatic drugs mainly used for the treatment of cancer by disrupting the cell function and prevent multiplication of cancerous cell. Therefore, anticancer drugs are suspected to pose potential risk on environment by influencing mutagenic effects on the cells of aquatic organisms. An extensive research has been already made in the field of pharmaceutical removal, however their application on the removal of anticancer drugs is limited. This review paper elucidates about different electrochemical techniques for the mitigation of cytostatic drugs.


2015 ◽  
Vol 11 (7) ◽  
pp. 629-635 ◽  
Author(s):  
Evgeniy Suslov ◽  
Konstantin Ponomarev ◽  
Artem Rogachev ◽  
Michail Pokrovsky ◽  
Andrey Pokrovsky ◽  
...  
Keyword(s):  

2021 ◽  
Vol 22 (12) ◽  
pp. 6320
Author(s):  
Monia Lenzi ◽  
Veronica Cocchi ◽  
Sofia Gasperini ◽  
Raffaella Arfè ◽  
Matteo Marti ◽  
...  

Mexedrone, α-PVP and α-PHP are synthetic cathinones. They can be considered amphetamine-like substances with a stimulating effect. Actually, studies showing their impact on DNA are totally absent. Therefore, in order to fill this gap, aim of the present work was to evaluate their mutagenicity on TK6 cells. On the basis of cytotoxicity and cytostasis results, we selected the concentrations (35–100 µM) to be used in the further analysis. We used the micronucleus (MN) as indicator of genetic damage and analyzed the MNi frequency fold increase by flow cytometry. Mexedrone demonstrated its mutagenic potential contrary to the other two compounds; we then proceeded by repeating the analyzes in the presence of extrinsic metabolic activation in order to check if it was possible to totally exclude the mutagenic capacity for α-PVP and α-PHP. The results demonstrated instead the mutagenicity of their metabolites. We then evaluated reactive oxygen species (ROS) induction as a possible mechanism at the basis of the highlighted effects but the results did not show a statistically significant increase in ROS levels for any of the tested substances. Anyway, our outcomes emphasize the importance of mutagenicity evaluation for a complete assessment of the risk associated with synthetic cathinones exposure.


Author(s):  
Weiwen Fan ◽  
Miao Yu ◽  
Xin Wang ◽  
Weiling Xie ◽  
Rui Tian ◽  
...  
Keyword(s):  

1988 ◽  
Vol 15 (3) ◽  
pp. 245-250
Author(s):  
Geirid Fiskesjö

Two industrial chemicals, 2,4-dichlorophenol and 4-chloro-2-methylphenoxyacetic acid (MCPA), which have no toxic effects on the Chinese hamster cell line V79 alone, were tested for toxicity and mutagenicity in a cell-mediated test, where mixed-function oxidase (MFO) enzymes are active in the metabolism of xenobiotics. For 2,4-dichlorophenol, a dose-dependent toxicity as well as a slight mutagenicity could be shown when oxygenation enzymes were present. A similar degree of toxicity in a plant test system (the Allium test) indicates a similar risk of damage from exposure to dichlorophenol treatments in both these systems. MCPA did not induce any toxic or mutagenic effects at the concentrations tested. These results were not in agreement with previous results in plant material, where MCPA was clearly toxic at relatively low doses. However, since chlorophenols have been found in plants sprayed with phenoxyacetic acids, further investigations should be performed concerning potential risk to human beings.


1981 ◽  
Vol 2 (10) ◽  
pp. 945-949 ◽  
Author(s):  
Kouichi Noda ◽  
Makoto Umeda ◽  
Yoshio Ueno

Sign in / Sign up

Export Citation Format

Share Document