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Lozi AA, Pinto da Matta SL, Sarandy MM, et al. Relevance of the Isoflavone Absorption and Testicular Function: A Systematic Review of Preclinical Evidence. Evid Based Complement Alternat Med. 2021;2021:8853172doi: 10.1155/2021/8853172.
Lozi, A. A., Pinto da Matta, S. L., Sarandy, M. M., Silveira Alves de Melo, F. C., Araujo, D. C., Novaes, R. D., & Gonçalves, R. V. (2021). Relevance of the Isoflavone Absorption and Testicular Function: A Systematic Review of Preclinical Evidence. Evidence-based complementary and alternative medicine : eCAM, 20218853172. https://doi.org/10.1155/2021/8853172
Lozi, Amanda Alves, et al. "Relevance of the Isoflavone Absorption and Testicular Function: A Systematic Review of Preclinical Evidence." Evidence-based complementary and alternative medicine : eCAM vol. 2021 (2021): 8853172. doi: https://doi.org/10.1155/2021/8853172
Lozi AA, Pinto da Matta SL, Sarandy MM, Silveira Alves de Melo FC, Araujo DC, Novaes RD, Gonçalves RV. Relevance of the Isoflavone Absorption and Testicular Function: A Systematic Review of Preclinical Evidence. Evid Based Complement Alternat Med. 2021 Feb 12;2021:8853172. doi: 10.1155/2021/8853172. eCollection 2021. PMID: 33628321; PMCID: PMC7895610.
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Evid Based Complement Alternat Med. 2021 Feb 12;2021:8853172. doi: 10.1155/2021/8853172. eCollection 2021.

Relevance of the Isoflavone Absorption and Testicular Function: A Systematic Review of Preclinical Evidence.

Evidence-based complementary and alternative medicine : eCAM

Amanda Alves Lozi, Sérgio Luis Pinto da Matta, Mariáurea Matias Sarandy, Fabiana Cristina Silveira Alves de Melo, Diane Costa Araujo, Rômulo Dias Novaes, Reggiani Vilela Gonçalves

Affiliations

  1. Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
  2. Department of Animal Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil.
  3. Department of Structural Biology, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil.

PMID: 33628321 PMCID: PMC7895610 DOI: 10.1155/2021/8853172

Abstract

Isoflavone is a phytoestrogen found in different types of food that can act as endocrine disrupters leading to testicular dysfunction. Currently, fragmented data on the action of this compound in the testicles make it difficult to assess its effects to define a safe dose. Thus, we systematically reviewed the preclinical evidence of the impact of isoflavone on testicular function. We also determined which form (aglycones or glycosylated) was the most used, which allowed us to understand the main biological processes involved in testicular function after isoflavone exposure. This systematic review was carried out according to the PRISMA guidelines using a structured search on the biomedical databases MEDLINE (PubMed), Scopus, and Web of Science, recovering and analyzing 22 original studies. The bias analysis and the quality of the studies were assessed by the criteria described in the risk of bias tool developed by SYRCLE (Systematic Review Centre for Laboratory Animal Experimentation). The aglycones and glycosylated isoflavones proved to be harmful to the reproductive health, and the glycosylates at doses of 50, 100, 146, 200, 300, 500, and 600 mg/kg, in addition to 190 and 1000 mg/L, appear to be even more harmful. The main testicular pathologies resulting from the use of isoflavones are associated with Leydig cells resulting from changes in molecular functions and cellular components. The most used isoflavone to evaluate testicular changes was the genistein/daidzein conjugate. The consumption of high doses of isoflavones promotes changes in the functioning of Leydig cells, inducing testicular changes and leading to infertility in murine models.

Copyright © 2021 Amanda Alves Lozi et al.

Conflict of interest statement

The authors declare no conflicts of interest.

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