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Conservation of Steroidogenic Effect of the Low-Molecular-Weight Agonist of Luteinizing Hormone Receptor in the Course of Its Long-Term Administration to Male Rats

  • BIOCHEMISTRY, BIOPHYSICS, AND MOLECULAR BIOLOGY
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Abstract—It was shown that the thienopyrimidine derivative TP03, a low-molecular-weight agonist of the luteinizing hormone receptor (LHR), during the treatment of male rats for 7 days steadily increased the production of testosterone (T), whose elevated level was retained for 7 days, and increased the expression of the gene for LHR, which indicates the maintenance of the sensitivity of Leydig cells to gonadotropins. At the same time, the steroidogenic effect of human chorionic gonadotropin (hCG), which significantly increased the T level on the first day of administration, was further weakened, which was accompanied by a decrease in the expression of the gene for LHR in the testes, indicating the development of resistance of Leydig cells to hCG. Along with this, in the case of hCG administration, a compensatory increase in the expression of genes of the steroidogenic enzymes, such as cytochrome P450scc and dehydrogenase 3β-HSD, was shown in the testes, while in the case of TP03 administration this effect was absent.

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Authors and Affiliations

  1. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 194223, St. Petersburg, Russia

    A. A. Bakhtyukov, K. V. Derkach & A. O. Shpakov

  2. St. Petersburg State University, St. Petersburg, Russia

    D. V. Dar’in

Authors
  1. A. A. Bakhtyukov
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  2. K. V. Derkach
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  3. D. V. Dar’in
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  4. A. O. Shpakov
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Correspondence to A. O. Shpakov.

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Translated by M. Batrukova

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Bakhtyukov, A.A., Derkach, K.V., Dar’in, D.V. et al. Conservation of Steroidogenic Effect of the Low-Molecular-Weight Agonist of Luteinizing Hormone Receptor in the Course of Its Long-Term Administration to Male Rats. Dokl Biochem Biophys 484, 78–81 (2019). https://doi.org/10.1134/S1607672919010216

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  • DOI: https://doi.org/10.1134/S1607672919010216

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