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首页> 美国卫生研究院文献>Springer Open Choice >The Effect of Aluminum Exposure on Reproductive Ability in the Bank Vole (Myodes glareolus)
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The Effect of Aluminum Exposure on Reproductive Ability in the Bank Vole (Myodes glareolus)

机译：铝暴露对河岸田鼠繁殖能力的影响

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Human impact on the environment is steadily increasing the amounts of aluminum in the ecosystems. This element accumulates in plants and water, potentially exposing herbivores to its harmful effect. In heavily polluted sites, a decrease in the density of small rodent populations has been observed. This decline may be caused by many factors, including decreased fertility. The aim of the presented research was to determine how aluminum, administered at concentrations similar to those recorded in industrial districts (Al I = 3 mg/l, Al II = 200 mg/l), affects the reproductive abilities of small rodents. As the indicators of reproductive abilities, body weight, weight of the testes and accessory sex glands of males, and uterus weight of females were estimated. In females, the number of matured follicles (types 6, 7, and 8) was analyzed, while in males, the quantity and quality (matured, viable, swollen, motile, head abnormalities) of epididymal sperm cells were assessed. Moreover, the development of testes, measured by spermatogenic index, was determined. The model species was the bank vole. Our results have proven that aluminum impairs adult individuals’ reproductive abilities by decreasing the quality and quantity of sperm cells and by causing morphologically abnormal development of the gonads. However, no difference in male organometric parameters was found, and only in females treated with 3 mg/l Al, the uterus weight was higher than control. No differences were found in the total number of matured follicles. These results suggest that the decline in rodent numbers in industrial districts is due, at least in part, to poorer males’ reproductive abilities, resulting from exposure to aluminum contamination.
机译：人类对环境的影响正在稳步增加生态系统中的铝含量。该元素在植物和水中积累，可能使食草动物受到其有害影响。在污染严重的地点，已观察到小型啮齿动物种群的密度下降。这种下降可能是由许多因素引起的，包括生育力下降。提出的研究的目的是确定以与工业区中记录的浓度相似的浓度（Al I = 3 mg / l，Al II = 200 mg / l）施用铝如何影响小啮齿动物的繁殖能力。作为生殖能力的指标，估计了男性的体重，睾丸和附属性腺的重量以及女性的子宫重量。在雌性中，分析了成熟卵泡的数量（6、7和8型），而雄性中，附睾的精子细胞的数量和质量（成熟，存活，肿胀，运动，头部异常）被评估。此外，通过生精指数测定睾丸的发育。模型物种是田鼠。我们的结果证明，铝会降低精子的质量和数量，并导致性腺的形态异常发育，从而损害成年个体的生殖能力。然而，在男性的器官测量参数上没有发现差异，仅在接受3 mg / l Al处理的女性中，子宫重量高于对照组。未发现成熟卵泡总数的差异。这些结果表明，工业区啮齿动物数量的下降至少部分是由于暴露于铝污染下较弱的雄性生殖能力造成的。

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