Effect of TiO2 Nanoparticles on the Reproduction of Silkworm

Silkworm ( Bombyx mori ) is an important economic insect and the model insect of Lepidoptera. Because of its high fecundity and short reproduction cycle, it has been widely used in reproduction and development research. The high concentrations of titanium dioxide nanoparticles (TiO 2 NPs) show repro...

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Veröffentlicht in:Biological trace element research 2015-03, Vol.164 (1), p.106-113
Hauptverfasser: Ni, Min, Li, Fanchi, Wang, Binbin, Xu, Kaizun, Zhang, Hua, Hu, Jingsheng, Tian, Jianghai, Shen, Weide, Li, Bing
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container_issue 1
container_start_page 106
container_title Biological trace element research
container_volume 164
creator Ni, Min
Li, Fanchi
Wang, Binbin
Xu, Kaizun
Zhang, Hua
Hu, Jingsheng
Tian, Jianghai
Shen, Weide
Li, Bing
description Silkworm ( Bombyx mori ) is an important economic insect and the model insect of Lepidoptera. Because of its high fecundity and short reproduction cycle, it has been widely used in reproduction and development research. The high concentrations of titanium dioxide nanoparticles (TiO 2 NPs) show reproductive toxicity, while low concentrations of TiO 2 NPs have been used as feed additive and demonstrated significant biological activities. However, whether the low concentrations of TiO 2 NPs affect the reproduction of B. mori has not been reported. In this study, the growth and development of gonad of B. mori fed with a low concentration of TiO 2 NPs (5 mg/L) were investigated by assessing egg production and expression of reproduction-related genes. The results showed that the low concentration of TiO 2 NPs resulted in faster development of the ovaries and testes and more gamete differentiation and formation, with an average increase of 51 eggs per insect and 0.34 × 10 −4  g per egg after the feeding. The expressions of several reproduction-related genes were upregulated, such as the yolk-development-related genes Ovo-781 and vitellogenin ( Vg ) were increased by 5.33- and 6.77-folds, respectively. This study shows that TiO 2 NPs feeding at low concentration can enhance the reproduction of B. mori , and these results are useful in developing new methods to improve fecundity in B. mori and providing new clues for its broad biological applications.
doi_str_mv 10.1007/s12011-014-0195-1
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Because of its high fecundity and short reproduction cycle, it has been widely used in reproduction and development research. The high concentrations of titanium dioxide nanoparticles (TiO 2 NPs) show reproductive toxicity, while low concentrations of TiO 2 NPs have been used as feed additive and demonstrated significant biological activities. However, whether the low concentrations of TiO 2 NPs affect the reproduction of B. mori has not been reported. In this study, the growth and development of gonad of B. mori fed with a low concentration of TiO 2 NPs (5 mg/L) were investigated by assessing egg production and expression of reproduction-related genes. The results showed that the low concentration of TiO 2 NPs resulted in faster development of the ovaries and testes and more gamete differentiation and formation, with an average increase of 51 eggs per insect and 0.34 × 10 −4  g per egg after the feeding. The expressions of several reproduction-related genes were upregulated, such as the yolk-development-related genes Ovo-781 and vitellogenin ( Vg ) were increased by 5.33- and 6.77-folds, respectively. 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subjects Animal reproduction
Animals
Biochemistry
Biomedical and Life Sciences
Biotechnology
Bombyx - physiology
Butterflies & moths
Egg production
Fecundity
Feed additives
Insect Proteins
Insects
Life Sciences
Nanoparticles
Nanoparticles - chemistry
Nutrition
Oncology
Reproduction
Reproduction - drug effects
Titanium - chemistry
Titanium - pharmacology
Titanium dioxide
Titanium oxide powders
Toxicity
title Effect of TiO2 Nanoparticles on the Reproduction of Silkworm
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