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A recent study on the deployment of nanoparticles in the consumer and healthcare sectors has shown highly serious safety concerns. This is despite the fact that nanoparticles offer a vast array of applications and great promise. According to studies on how nanoparticles interact with neurons, the central nervous system experiences both negative and positive impacts (CNS). With a maximum concentration of 0.1-1.0 wt.%, nanoparticles can be incorporated into materials to impart antibacterial and antiviral properties. Depending on the host or base materials utilised, this concentration may be transformed into a liquid phase release rate (leaching rate). For instance, nanoparticulate silver (Ag) or copper oxide (CuO)-filled epoxy resin exhibits extremely restricted release of the metal ions (Ag+ or Cu2+) into their surroundings unless they are physically removed or deteriorated. Nanoparticles are able to traverse a variety of barriers, including the blood-brain barrier (BBB) and skin, and are capable of penetrating biological systems and leaking into internal organs. In these circumstances, it is considered that the maximum drug toxicity test limit (10 g ml 1), as measured in artificial cerebrospinal solution, is far lower than the concentration or dosage. As this is a fast-increasing industry, as the public's exposure to these substances increases, so does their use. Thus, neurologists are inquisitive about how nanoparticles influence human neuronal cells in the central nervous system (CNS) in terms of both their potential benefits and drawbacks. This study will emphasise and address it.

An experiment was conducted in the net house, Department of Botany, AMU, Aligarh, India, in 2012 to evaluate the effect of foliar application of cement dust (0.00, 0.25, 0.50, 1.00, 2.00 and 4.00 g.m -2 .day -1) on plant growth, yield, biomass, photosynthetic pigments, NPK concentrations of plants, and protein and carbohydrate contents of Solanum tuberosum. Dusting of cement dust caused a significant adverse effect on all the above parameters. As the doses were increased, the values of above parameters were decreased. The epidermal characters of leaves were also observed. The number and size (length and width) of stomata, and size (length and width) of the stomatal aperture on both the surfaces of leaves were gradually decreased with the increase in cement dust levels. While, number and length of trichomes were increased at all the doses of cement dust.