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首页> 外文期刊>Journal of Fish Biology >The effect of different exogenous kisspeptins on sex hormones and reproductive indices of the goldfish (Carassius auratus) broodstock
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The effect of different exogenous kisspeptins on sex hormones and reproductive indices of the goldfish (Carassius auratus) broodstock

机译：不同外源性吻肽对金鱼（Carassius auratus）的性激素和生殖指标的影响

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摘要

Despite several studies on fish hormone therapy, finding new candidates may provide more reproductive efficiency in artificial propagation. Kisspeptins, being upstream of the hypothalamic-pituitary-gonadal axis, appear to play a key role in the reproduction process. In the present study, the effect of different variants of kisspeptide, including goldfish (Carassius auratus) kiss1 kisspeptin (Kiss1), human kisspeptin (Hkiss), and their combination (Kiss1 + H), on the reproductive indices of goldfish broodstock in comparison to Ovaprim (a typical synthetic Gnrh hormone) was investigated. Peptides (Kiss1 and Hkiss) were synthesized using a solid-phase synthesis approach. Kiss1 and Hkiss were injected at a dose of 100 mu g kg(-1) body weight, blood samples were taken 6 h after injection and sex hormones (E2, Dhp, and 11-Kt), gonadotropins (Lh and Fsh), cortisol and reproductive indices (fecundity, fertilization and hatching percentage) were measured. The results showed a significant increase of plasma sex hormones and gonadotropins in fish treated with kisspeptins. In addition, the cortisol and lipoprotein lipase in Kiss1, Hkiss and Kiss1 + H were remarkably increased compared to Ovaprim. In conclusion, kisspeptins could be a more suitable candidate than Ovaprim for accelerating and synchronizing oocyte maturation in the fisheries industry.
机译：尽管有几项关于鱼类激素疗法的研究，但在人工繁殖中，找到新的候选者可能会提供更高的繁殖效率。Kisspeptin位于下丘脑-垂体-性腺轴的上游，似乎在生殖过程中起着关键作用。在本研究中，与Ovaprim（一种典型的合成Gnrh激素）相比，研究了不同的Kisspeption变体，包括金鱼（鲫鱼）、kiss1 kisspeptin（kiss1）、人类kisspeptin（Hkiss）及其组合（kiss1+H）对金鱼亲鱼繁殖指数的影响。肽（Kiss1和Hkiss）采用固相合成法合成。以100μg kg（-1）体重的剂量注射Kiss1和Hkiss，注射后6小时采集血样，并测量性激素（E2、Dhp和11 Kt）、促性腺激素（Lh和Fsh）、皮质醇和生殖指数（繁殖力、受精率和孵化率）。结果表明，用kisspeptin处理的鱼血浆性激素和促性腺激素显著增加。此外，与Ovaprim相比，Kiss1、Hkiss和Kiss1+H中的皮质醇和脂蛋白脂肪酶显著升高。总之，Kisspeptin可能比Ovaprim更适合在渔业中加速和同步卵母细胞成熟。

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