Indicators of the cell cycle in the thyroid gland in rats when applying infusion of 0.9% solution of NaCl, lactoprotein with sorbitol or HAES-LX 5%
The thyroid gland is an important organ that is involved in the regulation of homeostasis and adaptation in various pathological conditions. However, the question of the study of the proliferative activity of thyroid cells by flow cytometry is still poorly understood. Purpose of study: to investigate the indices of the cell cycle and DNA fragmentation of thyroid cells in rats against the background of infusion of 0.9% NaCl solution, lactoprotein with sorbitol or HAES-LX 5%. Experimental studies were performed on 90 white male rats weighing 160-180 g. Infusion of 0.9% NaCl solution, lactoprotein with sorbitol or HAES-LX 5% was performed in the inferior vena cava after its catheterization in aseptic conditions through the femoral vein. The infusions were performed once a day for the first 7 days. Trunk catheterization and decapitation of animals (after 1, 3, 7, 14, 21, and 30 days) were performed under propofol anesthesia (60 mg/kg i/v). Within the framework of the agreement on scientific cooperation between the Research Center of National Pirogov Memorial Medical University, Vinnytsya and the Department of Histology, Cytology and Embryology of the Odessa National Medical University (from 01/01/2018), DNA content in the nuclei of thyroid cells of rats was determined by flow DNA cytometry. Cell cycle analysis was performed using the software FloMax (Partec, Germany) in full digital accordance with the mathematical model, which determined: G0G1 – the percentage of cells of the phase G0G1 to all cells of the cell cycle (DNA content = 2c); S – the percentage of the phase of DNA synthesis to all cells of the cell cycle (DNA content > 2c and < 4c); G2+M – the percentage ratio of the G2+M phase to all cells in the cell cycle (DNA = 4c). Determination of DNA fragmentation (SUB-G0G1, apoptosis) was performed by isolating the RN2 region on DNA histograms before the G0G1 peak, indicating nuclei of cells with a DNA content < 2c. The statistical processing of the obtained results was carried out in the license package “STATISTICA 6.1” using nonparametric estimation methods. The data obtained showed a virtually identical pattern of rat cell cycle and DNA fragmentation of the thyroid gland cells at all study times against the use of 0.9% NaCl solution, lactoprotein with sorbitol or HAES-LX 5%. Thyroid cells in rats are predominantly in the inactive phase of DNA synthesis (G0G1) (90.32% – 91.88%), significantly fewer cells are in the G2+M phase (7.56% – 9.17%), and there is a small percentage of cells in the S-phase (DNA synthesis) (0.52% – 0.67%) and the SUB-G0G1 interval (DNA fragmentation, apoptosis) (2.23% – 2.81%). We can state that the activity of the main part of the thyroid gland is rather low without pathological irritation.
 Ageenko, K. I., Gorbachev, A. L., & Shubert, E. E. (2011). Features of the thyroid gland histostructure in residents of the city of Magadan. Basic research, 2(9), 191-195.
 Arzhanov, I. Y., Buniatov, M. R., & Ushakovа, G. A. (2017). The thyroid status of a conditionally healthy adult population of Prydniprovia. Regulatory Mechanisms in Biosystems, 8(4), 554-558. https://doi.org/10.15421/021785
 Behbehani, G. K. (2018). Cell cycle analysis by mass cytometry. Methods Mol. Biol., 1686, 105-124. doi: 10.1007/978-1-4939-7371-2_8
 Benvenga, S., Tuccari, G., Leni, A., & Vita, R. (2018). Thyroid Gland: Anatomy and Physiology. In book: Reference Module in Biomedical Sciences. Elsevier Inc. doi: 10.1016/B978-0-12-801238-3.96022-7
 Cherkasov, V. G., Cherkasov, E. V., Kaminsky, R. F., Pastukhova, V. A., Kovalchuk, O. І., & Trofimenko, Yu. Yu. (2017). Influence of HAES-LX-5% infusion solution on the DNA content of endocrine glands cells against the background of thermal burn of skin in rats. Світ медицини та біології, 13, 4(62), 168-173. doi: 10.26724/2079-8334-2017-4-62-168-173
 Davis, P. J., Leonard, J. L., Lin, H. Y., Leinung, M., & Mousa, S. A. (2018). Molecular basis of nongenomic actions of thyroid hormone. Vitamins and hormones, 106, 67-96. doi: 10.1016/bs.vh.2017.06.001
 Kaczmarzyk, T., Kisielowski, K., Koszowski, R., Rynkiewicz, M., Gawełek, E., Babiuch, K. … Drozdzowska, B. (2018). Investigation of clinicopathological parameters and expression of COX-2, bcl-2, PCNA, and p53 in primary and recurrent sporadic odontogenic keratocysts. Clinical oral investigations, 22(9), 3097-3106. doi: 10.1007/s00784-018-2400-7
 Khmel’niczkij, O. K., & Gorbachev, A. L. (2005). To the question of desquamation of thyroid epithelium. Human ecology, 2, 10-16.
 Kim, K. H., & Sederstrom, J. M. (2015). Assaying cell cycle status using flow cytometry. Current protocols in molecular biology, 111 (28.6), 1-11. doi: 10.1002/0471142727.mb2806s111
 Konovalov, S. S., & Polyakova, V. O. (Eds.) (2009). Verification of expression of the P53 protein in the human thyroid gland during aging. Belgorod. Abstracts are presented in the materials of the “Spring Gerontological Conference”, Belgorod (pp. 27-28). Belgorod: [b. i.].
 Myalin, A. N., Mozerov, S. A., Chekushkin, A. A., & Sokolov, I. A. (2007). The effect of burn shock on the morphofunctional state of the thyroid gland. News of higher educational institutions. Volga region. Medical sciences, 4, 22-29.
 Nilsson, M., & Fagman, H. (2017). Development of the thyroid gland. Development, 144(12), 2123-2140. doi: 10.1242/dev.145615
 Ocheretna, N. P., Guminskiy, Yu. I., & Gunas, I. V. (2018). Indicators of cell cycle and dna fragmentation of spleen cells in early terms after thermal burns of skin on the background of using “lactoprotein with sorbitol” or HAES-LX-5%. Вісник наукових досліджень, 1, 141-146. doi: 10.11603/2415-8798.2018.1.8627
 Ortiga‐Carvalho, T. M., Chiamolera, M. I., Pazos‐Moura, C. C., & Wondisford, F. E. (2016). Hypothalamus‐Pituitary‐Thyroid Axis. Comprehensive Physiology, 6(3), 1387-1428. doi: 10.1002/cphy.c150027
 Pavlov, A. V., & Bezdenezhny’kh, A. V. (2018). Proliferative and secretory activity of follicular thyrocytes in various modes of muscle activity. Bulletin of new medical technologies, 25(3), 202-208.
 Rashmi, M., Liu, Y.-Y., & Brent, G. A. (2014). Thyroid hormone regulation of metabolism. Physiological reviews, 94.2, 355-382. doi: 10.1152/physrev.00030.2013
 Sun, X., & Kaufman, P. D. (2018). Ki-67: more than a proliferation marker. Chromosoma, 127(2), 175-186. doi: 10.1007/s00412-018-0659-8
 Wang, X., Lu, X., Geng, Z., Yang, G., & Shi, Y. (2017). LncRNA PTCSC3/miR‐574‐5p governs cell proliferation and migration of papillary thyroid carcinoma via Wnt/β‐catenin signaling. Journal of cellular biochemistry, 118(12), 4745-4752. https://doi.org/10.1002/jcb.26142
 Zhou, Q., Chen, J., Feng, J., & Wang, J. (2016). Long noncoding RNA PVT1 modulates thyroid cancer cell proliferation by recruiting EZH2 and regulating thyroid-stimulating hormone receptor (TSHR). Tumor Biol., 37(3), 3105-3113. doi: 10.1007/s13277-015-4149-9
 Zugairova, O. N., Polyakova, V. O., & Konovalov, S. S. (2009). Dynamics of processes of proliferation and apoptosis of human and rat thyroid follicular cells in natural and radiation-induced aging. Medico-biological and socio-psychological problems of safety in emergency situations, 4, 54-58.
This work is licensed under a Creative Commons Attribution 4.0 International License.