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논문 기본 정보

자료유형
학술저널
저자정보
Jung-Taek Kwon (National Institute of Environmental Research) Gyun-Baek Seo (National Institute of Environmental Research) Eunhye Jo (National Institute of Environmental Research) Mimi Lee (National Institute of Environmental Research) Hyun-Mi Kim (National Institute of Environmental Research) Ilseob Shim (National Institute of Environmental Research) Byung-Woo Lee (Kangwon National University) Byung-Il Yoon (Kangwon National University) Pilje Kim (National Institute of Environmental Research) Kyunghee Choi (National Institute of Environmental Research)
저널정보
한국독성학회 Toxicological Research Toxicological Research Vol.29 No.3
발행연도
2013.9
수록면
181 - 185 (5page)

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초록· 키워드

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Aluminum nanoparticles (Al-NPs) are one of the most widely used nanomaterial in cosmetics and medical materials. For this reason, Al-NP exposure is very likely to occur via inhalation in the environment and the workplace. Nevertheless, little is known about the mechanism of Al-NP neurotoxicity via inhalation exposure. In this study, we investigated the effect AL-NPs on the brain. Rats were exposed to Al-NPs by nasal instillation at 1 mg/kg body weight (low exposure group), 20 mg/kg body weight (moderate exposure group), and 40 mg/kg body weight (high exposure group), for a total of 3 times, with a 24-hr interval after each exposure. Inductively coupled plasma mass spectrometry (ICP-MS) analysis indicated that the presence of aluminum was increased in a dose-dependent manner in the olfactory bulb (OFB) and the brain. In microarray analysis, the regulation of mitogen-activated protein kinases (MAPK) activity (GO: 0043405), including Ptprc, P2rx7, Map2k4, Trib3, Trib1, and Fgd4 was significantly over-expressed in the treated mice than in the controls (p = 0.0027). Moreover, Al-NPs induced the activation of ERK1 and p38 MAPK protein expression in the brain, but did not alter the protein expression of JNK, when compared to the control. These data demonstrate that the nasal exposure of Al-NPs can permeate the brain via the olfactory bulb and modulate the gene and protein expression of MAPK and its activity.

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INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
REFERENCES

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