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This study investigated the developmental toxicity of carbendazim during the organogenesis period in mice. Mated CD-1 mice were administered carbendazim at dose levels 0, 150, 300, and 600 mg/kg/day by gavage. Body weights, weight gains, and feed consumption were significantly reduced in mice administered with 300 and 600 mg/kg/day. Carbendazim exposure increased maternal levels of cholesterol, triglyceride, glucose, protein, and creatinine; and reduced the levels of estradiol and progesterone in the 300- and 600-mg/kg/day groups. In addition, exposure to carbendazim significantly reduced the number of live fetuses and increased the number of dead and resorptions at the same dose levels. External, visceral, and skeleton malformations were observed in the 300- and 600-mg/kg/day. In conclusion, exposure of pregnant mice to carbendazim induced maternal and developmental toxicity at 300 and 600 mg/kg/day. 150 mg/kg/day carbendazim produced a very slight increase in postimplantation loss, which was within the range of historical controls, and no evidence of maternal toxicity.

This study reported the doping of polyaniline (PANI) with graphene (G) and multi-walled carbon nanotubes (MWCNTs) by in situ polymerization. The molecular structure of PANI and its composites was observed by FTIR, which shows that the intensity of composites peaks are higher than pure PANI due to charge transfer between the PANI and graphitic allotropes. The structural information and crystallinity of PANI and its composites can be deduced from X-ray diffraction. The morphological characterization was observed by transmission electron microscope, which elucidated that aniline molecules were physically adsorbed and polymerized on the surface of graphene and MWCNTs due to p-p* electron interaction. PANI represents as an external layer of composites with several diameters depending on the PANI deposition degree, where the cores are G and MWCNTs. The conductivity measurement clarified the conductivity value of 0.1 wt% G in PANI matrix is higher 17 times than PANI without it.

Graphical AbstractThe immunostimulatory effects of commercial feed additives on growth performance, non-specific immune response, antioxidants assay, and intestinal morphometry of Nile tilapia, O. niloticus.