期刊论文详细信息
Cardiometry
Differences in the functioning of the hypothalamic-pituitary-gonadal axis of regulation in male rats at one (liver) site and two (liver and lungs) sites of metastasis of sarcoma 45 in the experiment
article
Oleg I. Kit1  Irina V. Kaplieva1  Elena M. Frantsiyants1  Lidia K. Trepitaki1  Valeriya A. Bandovkina1  Yulia A. Pogorelova1  Irina A. Goroshinskaya1  Ekaterina I. Surikova1  Irina V. Neskubina1  Galina V. Zhukova1  Alla I. Shikhlyarova1  Marina A. Engibaryan1  Tatiana V. Ausheva1  Viktoria L. Volkova1  Marina A. Gusareva1  Polina S. Kachesova1 
[1] National Medical Research Centre for Oncology
关键词: Metastases;    Liver;    Hypothalamic-pituitary-gonadal axis;    Sex steroids;    Rats;    Males;    Sarcoma 45;   
DOI  :  10.18137/cardiometry.2023.27.5462
学科分类:环境科学(综合)
来源: Russian New University
PDF
【 摘 要 】

Aims: to study the features of the functioning of the hypothalamic-pituitary-gonadal axis (HPGA) regulation in male rats at the stages of liver metastasizing. Materials and methods. Our research work was performed in 30 outbred male rats. Metastases in the liver were produced by implantation of sarcoma 45 (S45) cells into the spleen, which was previously positioned under the skin. The time spans of the study are 5 weeks (the pre-metastatic stage) and 7 weeks (the metastatic stage) after tumor cell transplantation. In the tissues, the content of the following hormones was determined by RIA: luteinizing hormone (LH), follicle-stimulating hormone (FSH), estradiol (E2), total testosterone (Ttot), progesterone (P4); by ELISA we determined the content of the following hormones: gonadotropin-releasing hormone (GnRH), free testosterone (Tfr) and estrone (E1). Results. At all stages of the study, the level of GnRH in the hypothalamus decreased by more than 2.0 times; in the pituitary gland, the hormone levels had multidirectional dynamics: LH decreased by 1.6 times, and FSH increased by more than 6.0 times. Liver metastases were characterized by high levels of E1 and Ttot. In the gonads, a high level of P4 was recorded and concentrations of both forms of testosterone were reduced. The concentrations of E2 (by 1.6 times), Tfr (by 4.8 times) increased in blood, and the level of Ttot decreased (by 1.9 times). The salient features of HPGA in the presence of two metastasis sites (liver and lungs) were as follows: in blood, a 2.0 times lower increase in the LH and Tfr contents, a 1.6 times greater increase in E2, an increase in P4 (2.6 times), 1, 4 times lower level of FSH; in the gonads, there are found lower levels of P4, E1, but higher levels of Tfr and Ttot; in liver metastases, a greater increase in P4 (5.2 times), E1 (2.2 times) and Tfr (2.0 times) is recorded. Conclusion. Metastasizing to the liver was accompanied by activation of HPGA with the maximum accumulation of reactogenic E1 in liver metastases in rats with two metastasis sites that may indicate their more severe malignancy and ability to metastasize to the lungs.

【 授权许可】

CC BY   

【 预 览 】
附件列表
Files Size Format View
RO202307120003754ZK.pdf 167KB PDF download
  文献评价指标  
  下载次数:0次 浏览次数:1次