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Dietary Biotin Supplementation Impairs Testis Morphology and Sperm Quality.
Journal of Medicinal Food ( IF 1.7 ) Pub Date : 2020-05-12 , DOI: 10.1089/jmf.2019.0137
Karina Pastén-Hidalgo 1 , Leticia Riverón-Negrete 2 , Gloria Sicilia-Argumedo 2 , Gustavo Canul-Medina 2 , Tonatiuh Salazar-Anzures 2 , Miguel Tapia-Rodríguez 3 , Enrique O Hernández-González 4 , Ana Lilia Roa-Espitia 4 , Carlos Cedillo-Peláez 5 , Cristina Fernandez-Mejia 2
Affiliation  

Supplements containing pharmacological concentrations of biotin are commercially available over the counter. Classical toxicity studies have considered biotin administration as harmless; however, recent investigations have shown that biotin supplementation modifies tissue morphology without changes in toxicity markers, raising concerns about the consequences of morphological changes on tissues' functions and the safety of pharmacological concentrations of the vitamin. Testes are very sensitive to toxicants, and testicular histology is a reliable method to study its function. In this work, we investigated the effects of dietary biotin supplementation on testis morphology and spermatogenesis function using an experimental model, in which we have not observed unfavorable effects on other tissue functions or toxicity markers. Male BALB/cAnNHsd mice were fed a control or a biotin-supplemented diet (1.76 or 97.7 mg biotin/kg diet) for 8 weeks. Compared to the control group, the biotin-supplemented mice presented remarkable testis morphology changes, including increased spermatogonia layers; the cellular mechanism involved is related to increased proliferation. Sperm count and serum testosterone levels were not affected, but spermatozoa motility and morphology were significantly impaired in the biotin-supplemented mice. These results caution against the use of supplements with high concentrations of biotin and indicate that biotin's pharmacological effects on morphology need to be considered in toxicological studies.

中文翻译:

膳食生物素补充会损害睾丸的形态和精子质量。

含有药理学浓度的生物素的补充剂可从柜台购买。经典的毒性研究认为生物素的施用无害。但是,最近的研究表明,生物素补充剂可以改变组织形态,而不会改变毒性标志物,引起人们对形态改变对组织功能的影响以及维生素的药理浓度安全性的担忧。睾丸对毒物非常敏感,睾丸组织学是研究其功能的可靠方法。在这项工作中,我们使用实验模型研究了饮食生物素补充对睾丸形态和精子发生功能的影响,在该模型中我们没有观察到对其他组织功能或毒性标记的不利影响。给雄性BALB / cAnNHsd小鼠喂食对照或补充生物素的饮食(1.76或97.7 mg生物素/ kg饮食),持续8周。与对照组相比,添加生物素的小鼠睾丸形态发生了显着变化,包括精原细胞层增加。所涉及的细胞机制与增殖增加有关。精子数量和血清睾丸激素水平没有受到影响,但是在补充生物素的小鼠中精子的活力和形态显着受损。这些结果警告不要使用具有高浓度生物素的补充剂,并表明在毒理学研究中需要考虑生物素对形态的药理作用。补充生物素的小鼠睾丸形态发生显着变化,包括精原细胞层增加。涉及的细胞机制与增殖增加有关。精子数量和血清睾丸激素水平没有受到影响,但是在补充生物素的小鼠中精子的活力和形态显着受损。这些结果警告不要使用具有高浓度生物素的补充剂,并表明在毒理学研究中需要考虑生物素对形态的药理作用。补充生物素的小鼠睾丸形态发生显着变化,包括精原细胞层增加。涉及的细胞机制与增殖增加有关。精子数量和血清睾丸激素水平没有受到影响,但是在补充生物素的小鼠中精子的活力和形态显着受损。这些结果警告不要使用具有高浓度生物素的补充剂,并表明在毒理学研究中需要考虑生物素对形态的药理作用。但是,在补充了生物素的小鼠中,精子的活力和形态明显受损。这些结果警告不要使用具有高浓度生物素的补充剂,并表明在毒理学研究中需要考虑生物素对形态的药理作用。但是,在补充了生物素的小鼠中,精子的活力和形态明显受损。这些结果警告不要使用具有高浓度生物素的补充剂,并表明在毒理学研究中需要考虑生物素对形态的药理作用。
更新日期:2020-05-12
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