Effects of titanium dioxide (TiO2)/activated carbon (AC) nanoparticle on the growth and immunity of the giant freshwater prawn, Macrobrachium rosenbergii: potential toxicological risks to the aquatic crustaceans

Guo, Ziqi; Zuo, Jiabao; Li, Xue; Gong, Jing; Knepper, M. A.; Feng, Jianbin; Li, Jiale; Zhang, Shupeng; Qiu, Gao‐Feng

doi:10.1007/s11356-022-24555-8

Cited by 8 publications

(2 citation statements)

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“…Nanomaterial exposure results show that low concentrations of TiO 2 –GO nanoparticles inhibit the expression of E75 and HR3 , while the relative expression of genes increases at higher concentrations. According to previous studies, inhibition at low concentrations (0.1 mg/L) indicated that nanomaterial exposure resulted in a slowing down of the growth process of juvenile M. rosenbergii 11 . In contrast, when concentrations reach a threshold, elevated expression of E75 may cause juvenile M. rosenbergii to enter the molting stage when energy is insufficient.…”

Section: Discussionmentioning

confidence: 87%

“…As composite nanomaterial contamination has become a major issue in aquaculture systems, including M. rosenbergii breeding, related studies are beginning to appear in the literature. For example, studies on the effects of TiO 2 composites on aspects such as growth, digestive enzyme activity, oxidative stress, immune enzyme activity and transcriptomics in M. rosenbergii have been done 10 , 11 . On the other hand, before the current study, the effects of composite nanomaterials on prawn molting had yet to be examined.…”

Section: Introductionmentioning

confidence: 99%

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Molecular characterization and transcriptional response to TiO2–GO nanomaterial exposure of two molt-related genes in the juvenile prawn, Macrobrachium rosenbergii

Guo

Wang

et al. 2023

Sci Rep

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In recent years, with the widespread use of TiO2–GO nanocomposite in industry, especially in the remediation of water environments, its toxic effects on aquatic organisms have received increasing attention. As molting is extremely important for crustaceans in their growth, in this study, we cloned the full-length cDNA sequences of two key genes related to molting, nuclear hormone receptor E75 (E75) and nuclear hormone receptor HR3 (HR3), in Macrobrachium rosenbergii, examined the gene expression profile, and investigated their toxicological effects on crustacean molting through nanomaterial exposure. The amino acid sequences for E75 and HR3 were respectively determined to encode 1138 and 363 acid residues. Sequence analysis showed that both E75 and HR3 contain a HOLI domain, with the E75 of M. rosenbergii being more closely related to the E75 of Palaemon carinicauda. These two genes were expressed at the highest levels in muscle, followed by hepatopancreas. The results showed that the expressions of E75 and HR3 in hepatopancreas and muscle tissues were significantly decreased after exposure to 0.1 mg/L of TiO2–GO composite nanoparticles (P < 0.05). This study will serve as a foundation for subsequent research into the evaluation of nanomaterial toxicity on crustacean species.

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Section: Discussionmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%