Chlorpyrifos and its metabolite modulates angiogenesis in the chorioallantoic membrane of chick embryo
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C. Swathi Priyadarshini
, Jyothi Ashok Kumar
Abstract
Background
Chlorpyrifos (CPF) is an organophosphate insecticide, acaricide, and miticide used primarily to control foliage and soilborne insect pests on a variety of food and feed crops. Since trace amounts of these compounds are found in water and food products, they easily enter into the organ system unnoticed. In the same way, the compound or its metabolite gets transmitted from the parent to the embryo mainly through blood vessels. Since blood vessels form the major route of transport, it is pertinent to study the effect of these compounds during angiogenesis. The effect of CPF and 3,5,6-trichloro-2-pyridinol (TCPy) on the angiogenesis of chick embryo was evaluated in the chorioallantoic membrane (CAM) using an ex vivo model.
Methods
Nine-day-old incubated eggs where inoculated with various doses of CPF and TCPy. After 48 h of incubation, the CAM layers were retrieved and analyzed using angiogenesis software to obtain the density of blood vessels. Histomorphometric studies were performed to measure the thickness of vessel walls. The expression of VEGF, VEGFR2, and N-cadherin genes responsible for angiogenesis were analyzed.
Results
The exposure to the parent compound CPF and its metabolite TCPy promoted angiogenesis in groups administered with lower concentration of the pesticide and its metabolite, whereas a decline in angiogenesis was observed at higher concentrations. These observations were made by analyzing the density, histomorphometry results, and semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR) results. The density, thickness, and lumen size of blood vessels in the groups with low concentration of CPF and TCPy were 28.34, 9 μm, and 30 μm, respectively, whereas in the groups with higher CPF and TCPy concentrations, they were 12, 3 μm, and 9 μm, respectively.
Conclusions
Hence, CPF and its metabolites interfere with angiogenesis in the CAM of chick embryos. Because of their estrogen-mimicking ability, pesticides are the prime etiological suspects of increasing alteration in blood vessel formation. These results may be of help in future studies on the effect of CPF in embryonic growth, wound healing, diabetes, and tumors.
Acknowledgment
The authors acknowledge the Chettinad Academy Research and Education for funding this project and support.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Research funding: None declared.
Competing interests: Authors state no conflict of interest.
Ethical approval: According to Indian Animal Welfare Regulations, chicken embryos until hatching are not assigned the legal status of "animals"; therefore approval of an Ethics Committee was not required for this study.
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Articles in the same Issue
- Minireview
- Pharmacokinetics and pharmacodynamics of mitragynine, the principle alkaloid of Mitragyna speciosa: present knowledge and future directions in perspective of pain
- Original Articles
- Trehalose protects against spinal cord injury through regulating heat shock proteins 27 and 70 and caspase-3 genes expression
- Evaluation of cytogenotoxic potential of Morinda lucida leaf extract on Swiss albino male mice using two bioassays
- Acute and subacute toxicity evaluation of calcium carbide and ethylene glycol in Wistar albino rats
- Evaluation of the possible hepatotoxic and nephrotoxic potentials of the Averrhoa carambola juice extract in female albino rats
- Chlorpyrifos and its metabolite modulates angiogenesis in the chorioallantoic membrane of chick embryo
- Prescribing pattern of antihypertensive medication and adherence to Joint National Commission-8 guidelines in a rural tertiary care Indian teaching hospital
- Assessment of cardiac risk in chronic asymptomatic alcoholics using blood pressure and electrocardiogram, and the relation with duration of drinking
- Effect of ghrelin on VEGF-B and connexin-43 in a rat model of doxorubicin-induced cardiomyopathy
- In vitro antioxidant and enzyme inhibitory properties of the n-butanol fraction of Senna podocarpa (Guill. and Perr.) leaf
- Blood pressure-reducing activity of Gongronema latifolium Benth. (Apocynaeceae) and the identification of its main phytochemicals by UHPLC Q-Orbitrap mass spectrometry
- Evaluation of the anticonvulsant and anxiolytic-like activities of aqueous leaf extract of Cymbopogon citratus in mice
- Terpenoids and phytosteroids isolated from Commelina benghalensis Linn. with antioxidant activity
- Miscellaneous
- Suspected reactivation of extrapulmonary tuberculosis focus after non-medical abuse of anabolic androgenic steroids: a case report
- Acknowledgment