02554nam a2200313Ia 4500003001000000005001700010040000900027090001200036245018300048490004800231520143500279650001001714650002001724650003001744650001501774650002401789700001501813700001401828700001301842700001201855700001101867700001501878700001601893856015601909942001402065008004102079999001702120952010302137MX-MdCICY20260521091736.0  cCICY  aB-2057110aA preliminary study about the potential risks of the UV-weathered microplastic: The proteome-level changes in the brain in response to polystyrene derived weathered microplastics0 vEnvironmental Research, 233, p.116411, 20233 aThe growing use of plastic materials has resulted in a constant increase in the risk associated with microplastics (MPs). Ultra-violet (UV)light and wind break down modify MPs in the environment into smaller particles known as weathered MPs (WMPs)and these processes increase the risk of MP toxicity. The neurotoxicity of weathered polystyrene-MPs remains unclear. Therefore, it is important to understand the risks posed by WMPs. We evaluated the chemical changes of WMPs generated under laboratory-synchronized environmentally mimetic conditions and compared them with virgin MPs (VMPs). We found that WMP had a rough surface, slight yellow color, reduced molecular weight, and structural alteration compared with those of VMP. Next, 2 ?g of ?100 ?m in size of WMP and VMP were orally administered once a day for one week to C57BL/6 male mice. Proteomic analysis revealed that the WMP group had significantly increased activation of immune and neurodegeneration-related pathways compared with that of the VMP group. Consistently, in in vitro experiments, the human brain-derived microglial cell line (HMC-3)also exhibited a more severe inflammatory response to WMP than to VMP. These results show that WMP is a more profound inflammatory factor than VMP. In summary, our findings demonstrate the toxicity of WMPs and provide theoretical insights into their potential risks to biological systems and even humans in the ecosystem.14aBRAIN14aIMMUNE RESPONSE14aPOLYSTYRENE MICROPLASTICS14aPROTEOMICS14aWEATHERING PLASTICS12aKim, H. Y.12aAshim, J.12aPark, S.12aKim, W.12aJi, S.12aLee, S. W.12aChoi, S. K.40uhttps://drive.google.com/file/d/1TIfns898iSDLrY8KLjR7wRwrCgWapbxE/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx  2LoccREF1250602s9999    xx |||||s2   |||| ||und|d  c30596d30596  00102Loc40708F1aCICYbCICYcREd2025-06-25l0oB-20571r2025-06-25 16:24:51w2025-06-25yREF1