Studies on the Evaluation of Teratogenic Potential of SSRI (Escitalopram) on Chick Embryogenesis (Gallus gallus domesticus)
Abstract
Escitalopram is a selective serotonin reuptake inhibitor (SSRI) used for the treatment of depression, anxiety and panic disorders. The purpose of this study is to examine the effect of Escitalopram on the early developmental stages of chick embryo Gallus gallus. Escitalopram’s teratogenic potential was further assessed using YSM analysis and protein biochemistry. The treated embryos showed mild to severe teratogenic effects at 5mM and 10mM dose respectively. Enzyme Assay was conducted to see whether the drug treatment interfered with the cellular pathways. The levels of Alkaline phosphatase (ALP) and Acetylcholinesterase (AChase) were found to be reduced in the treated embryos. YSM Assay reveals that in ovo drug administration has an impact on the angiogenesis of the embryo. In depth further studies are needed to understand the long-term effects of Escitalopram on the developing embryos at cellular and molecular level so as to take caution while prescribing the drug during pregnancy.
Keywords: Gallus gallus domesticus, Enzyme Assay, Escitalopram, Teratogenesis, Yolk Sac Membrane (YSM) Assay, Protein Biochemistry.
Keywords:
Gallus gallus domesticus, Enzyme Assay, Escitalopram, Teratogenesis, Yolk Sac Membrane (YSM) Assay, Protein BiochemistryDOI
https://doi.org/10.22270/jddt.v15i3.7050References
1. El Mansari M, Sánchez C, Chouvet G, Renaud B, Haddjeri N. Effects of acute and long-term administration of escitalopram and citalopram on serotonin neurotransmission: an in vivo electrophysiological study in rat brain. Neuropsychopharmacology. 2005 Jul;30(7):1269-77. https://doi.org/10.1038/sj.npp.1300686
2. Håvardstun A. Neurodevelopmental toxicity of escitalopram and venlafaxine in PC12 and chicken cerebellum granule neurons, and kinetic studies of escitalopram in chicken embryo (Master's thesis).
3. Rao, N. The clinical pharmacokinetics of escitalopram. Clinical pharmacokinetics, 2007;46:281-290. https://doi.org/10.2165/00003088-200746040-00002
4. Sakka, L., Delétage, N., Chalus, M., Aissouni, Y., Sylvain-Vidal, V., Gobron, S., & Coll, G. Assessment of citalopram and escitalopram on neuroblastoma cell lines. Cell toxicity and gene modulation. Oncotarget, 2017;8(26):42789–42807. https://doi.org/10.18632/oncotarget.17050
5. Lee CH, Park JH, Yoo KY, Choi JH, Hwang IK, Ryu PD, Kim DH, Kwon YG, Kim YM, Won MH. Pre-and post-treatments with escitalopram protect against experimental ischemic neuronal damage via regulation of BDNF expression and oxidative stress. Experimental neurology. 2011 Jun 1;229(2):450-9. https://doi.org/10.1016/j.expneurol.2011.03.015
6. Alboni S, Benatti C, Capone G, Corsini D, Caggia F, Tascedda F, Mendlewicz J, Brunello N. Time-dependent effects of escitalopram on brain derived neurotrophic factor (BDNF) and neuroplasticity related targets in the central nervous system of rats. European journal of pharmacology. 2010 Sep 25;643(2-3):180-7. https://doi.org/10.1016/j.ejphar.2010.06.028
7. Zosen D, Hadera MG, Lumor JS, Andersen JM, Paulsen RE. Chicken embryo as animal model to study drug distribution to the developing brain. Journal of pharmacological and toxicological methods. 2021 Nov 1; 112:107105. https://doi.org/10.1016/j.vascn.2021.107105
8. As MN, Deshpande R, Kale VP, Bhonde RR, Datar SP. Establishment of an in ovo chick embryo yolk sac membrane (YSM) assay for pilot screening of potential angiogenic and anti‐angiogenic agents. Cell biology international. 2018 Nov;42(11):1474-83. https://doi.org/10.1002/cbin.11051
9. Hamburger V, Hamilton HL. A series of normal stages in the development of the chick embryo. Journal of morphology. 1951 Jan;88(1):49-92.
10. Kruger NJ. The Bradford method for protein quantitation. The protein protocols handbook. 2009:17-24. https://doi.org/10.1007/978-1-59745-198-7_4
11. Gonçalves CL, Rezin GT, Ferreira GK, Jeremias IC, Cardoso MR, Carvalho-Silva M, Zugno AI, Quevedo J, Streck EL. Differential effects of escitalopram administration on metabolic parameters of cortical and subcortical brain regions of Wistar rats. Acta neuropsychiatrica. 2012 Jun;24(3):147-54. https://doi.org/10.1111/j.1601-5215.2011.00592.x
12. FU B, Liu Y, Kong Z, Cheng X. Neuroprotective effect of escitalopram on cerebral ischemia/reperfusion in rats by promoting angiogenesis. International Journal of Cerebrovascular Diseases. 2013:96-101. https://doi.org/10.3760/cma.j.issn.1673-4165.2013.02.004
13. Dionisie V, Ciobanu AM, Toma VA, Manea MC, Baldea I, Olteanu D, Sevastre-Berghian A, Clichici S, Manea M, Riga S, Filip GA. Escitalopram targets oxidative stress, caspase-3, BDNF and MeCP2 in the hippocampus and frontal cortex of a rat model of depression induced by chronic unpredictable mild stress. International journal of molecular sciences. 2021 Jul 13;22(14):7483. https://doi.org/10.3390/ijms22147483
14. Dimoula A, Fotellis D, Aivalioti E, Delialis D, Polissidis A, Patras R, Kokras N, Stamatelopoulos K. Off-target effects of antidepressants on vascular function and structure. Biomedicines. 2021 Dec 28;10(1):56. https://doi.org/10.3390/biomedicines10010056
15. Saedi Marghmaleki V, Radahmadi M, Alaei H, Khanahmad H. Protective Effects of Long-Term Escitalopram Administration on Memory and Hippocampal BDNF and BCL-2 Gene Expressions in Rats Exposed to Predictable and Unpredictable Chronic Mild Stress. Brain Sciences. 2024 Apr 25;14(5):420. https://doi.org/10.3390/brainsci14050420
16. Unis A, Abdelbary A, Hamza M. Comparison of the effects of escitalopram and atorvastatin on diet-induced atherosclerosis in rats. Canadian Journal of Physiology and Pharmacology. 2014;92(3):226-33. https://doi.org/10.1139/cjpp-2013-0168
17. Wagh PS, Walimbe RB, Poyrekar AJ, Phatak SA, Divekar AA. Venlafaxine induces Teratogenesis and alters SHH Gene Expression and Protein Biochemistry of Developing Gallus sp. Embryos. J. Drug Delivery Ther. 2025;15(1):39-51. https://doi.org/10.22270/jddt.v15i1.6954
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