Impact of Short-Term Arsenic Exposure on Hormonal Balance and Fibrosis in Sprague Dawley Rats

Objective: To evaluate the toxic effects of arsenic exposure on the female reproductive tract and endocrinesystem.Study Design: A laboratory-based experiment.Place and Duration of Study: The study was carried out at the Laboratory of the National Institute of Health(NIH) Islamabad, Pakistan from 1st January 2019 to 4th January 2020.Methods: non-probability convenient sampling technique was employed and 60 female healthy SpragueDawley rats were included in the study at the National Institute Islamabad. Animals were randomly allocatedinto control and experimental groups (n=30 each). In the first week, animals were acclimatized to the animalhouse of the College of Physicians and Surgeons Pakistan. In the second week, the control and experimentalgroups were given 10 ml of distilled water by oral gavage daily and 4μg of sodium arsenite dissolved in 10 ml ofdistilled water daily for two weeks respectively. After the experimental period, animals were taken to theanimal lab of the National Institute of Health Islamabad for blood sampling and tissue dissection. Rats wereeuthanized by chloroform inhalation and blood was drawn by single intracardiac puncture and stored in clotactivator vials at 4 0C for further workup. The female reproductive tract was dissected, and the tissue was stored in 10 % formalin for histological studies. Serum Gonadotropin-releasing hormone (GnRH) levels were assessed via the Enzyme-Linked Immunosorbent Assay (ELISA) method. Whereas histological effects of arsenic were observed under a microscope by tissue processing and staining with Masson trichrome stain. Mean ± SD of serum GnRH levels and percentage of fibrosis in uterine tissue of control and experimental groups wereevaluated by the software Statistical Package for Social Sciences version 22.0. Comparison of means evaluatedby Student T-test. The significant p-value was ≤ 0.05.Results: The experimental group showed significant elevation of serum GnRH levels and fibrotic changes withhigh collagen deposition (p ≤ 0.05).Conclusion: Exposure to arsenic via contaminated drinking water is disruptive for the female reproductive tractand endocrine system. How to cite this: Mir A, Mir UZ, Hussain W, Irfan A, Butt HA, Sarwar U. Impact of Short-Term Arsenic Exposure on Hormonal Balance and Fibrosis in Sprague Dawley Rats. Life and Science. 2024; 5(2): 187-192. doi: http://doi.org/10.37185/LnS.1.1.64