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The in vitro exposure to cypermethrin does not inhibit the proliferative response of peripheral blood mononuclear cells.
- Source :
-
Drug and chemical toxicology [Drug Chem Toxicol] 2016; Vol. 39 (1), pp. 53-8. Date of Electronic Publication: 2015 Sep 04. - Publication Year :
- 2016
-
Abstract
- This study evaluated the effect of in vitro exposure to cypermethrin on peripheral blood mononuclear cells proliferative response, considering reduced peripheral blood mononuclear cells proliferative response observed in individuals occupationally exposed to pyrethroids. Peripheral blood mononuclear cells were obtained from 21 healthy subjects (28.0 ± 9.0 years old). The effect of cypermethrin (at 0.5, 1.0 and 5.0 mg/ml) on cell viability was evaluated by flow cytometry using an apoptosis detection kit. Cell proliferation (PI) was evaluated by 5-(and 6)-carboxyfluorescein diacetate succinimidyl ester (CFSE) fluorescence decay using flow cytometry. Cells labeled with CFSE were exposed, in vitro, to cypermethrin (0.5, 1.0, 2.0, 2.5 and 4 μg/ml) and stimulated with phytohemagglutinin (PHA 1.0 or 5.0 μg/ml) for 5 d (37 °C, 5% CO2). The in vitro treatment of peripheral blood mononuclear cells with cypermethrin did not induce apoptosis or necrosis after 5 d in culture. Stimulation by PHA induced cell proliferation (PI = 1.29 ± 1.09 and 2.01 ± 0.62, PHA at 1.0 and 5.0 μg/ml, respectively, mean ± SD) and in vitro exposure to cypermethrin did not alter cellular proliferative response to PHA (PI = 1.80 ± 0.50, 2.60 ± 0.05 and 2.10 ± 1.20 for cypermethrin at 1.0, 2.0 and 4.0 μg/ml, respectively, and PHA at 5.0 μg/ml). In vitro treatment of peripheral blood mononuclear cells with cypermethrin, at the doses tested, does not affect cell viability or proliferation. These findings suggest that the reduction of proliferation observed on lymphocytes derived from individuals occupationally exposed to pesticides may be related to other mechanisms than direct action of cypermethrin on lymphocytes.
- Subjects :
- Adult
Cell Proliferation drug effects
Cell Survival drug effects
Dose-Response Relationship, Drug
Flow Cytometry
Humans
In Vitro Techniques
Insecticides administration & dosage
Lymphocytes drug effects
Pyrethrins administration & dosage
Young Adult
Apoptosis drug effects
Insecticides toxicity
Leukocytes, Mononuclear drug effects
Pyrethrins toxicity
Subjects
Details
- Language :
- English
- ISSN :
- 1525-6014
- Volume :
- 39
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Drug and chemical toxicology
- Publication Type :
- Academic Journal
- Accession number :
- 25826182
- Full Text :
- https://doi.org/10.3109/01480545.2015.1022897