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Nanosized copper particles induced mesangial cell toxicity via the autophagy pathway
Xu, Pengjuan; Cao, Min; Dong, Xueqian; Yu, Zhichao; Liu, Jianwei; Tan, Junzhen; Wang, Yiyi; Li, Tao; Zhao, Shuwu.
  • Xu, Pengjuan; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
  • Cao, Min; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
  • Dong, Xueqian; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
  • Yu, Zhichao; Tianjin Sino-German University of Applied Sciences. Scientific Research Office. CN
  • Liu, Jianwei; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
  • Tan, Junzhen; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
  • Wang, Yiyi; Tianjin Haihe Hospital. Department of Neurology. CN
  • Li, Tao; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
  • Zhao, Shuwu; Tianjin University of Traditional Chinese Medicine. School of Integrative Medicine. CN
Braz. j. med. biol. res ; 55: e12252, 2022. graf
Article in English | LILACS-Express | LILACS | ID: biblio-1403899
ABSTRACT
Nanosized copper particles (nano Cu) have been incorporated into products in multiple industries, although studies have demonstrated that these particles are nephrotoxic. We investigated the cytotoxicity of nanosized copper particles on rat mesangial cells and measured rates of apoptosis, the expression of caspase-3, and generation of reactive oxygen species. We also measured autophagy through the acridine orange (AO) staining and expression of Beclin-1, microtubule-associated protein 1 light chain 3, and p62 to screen the underlying mechanism of toxicity. Nanosized copper particles inhibited mesangial cell viability, up-regulated the activity of caspase-3, and increased the rates of apoptosis and the generation of reactive oxygen species in a concentration-dependent manner. Exposure to nano Cu increased the formation of acidic vesicular organelles and the expression of Beclin-1, microtubule-associated protein 1 light chain 3, and p62, and treatment with an autophagy inhibitor reduced nephrotoxicity. This indicated that the autophagy pathway is involved in the toxicity induced by nanosized copper particles to mesangial cells. This finding can contribute to the development of safety guidelines for the evaluation of nanomaterials in the future.


Full text: Available Index: LILACS (Americas) Type of study: Practice guideline Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 2022 Type: Article / Project document Affiliation country: China Institution/Affiliation country: Tianjin Haihe Hospital/CN / Tianjin Sino-German University of Applied Sciences/CN / Tianjin University of Traditional Chinese Medicine/CN

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Full text: Available Index: LILACS (Americas) Type of study: Practice guideline Language: English Journal: Braz. j. med. biol. res Journal subject: Biology / Medicine Year: 2022 Type: Article / Project document Affiliation country: China Institution/Affiliation country: Tianjin Haihe Hospital/CN / Tianjin Sino-German University of Applied Sciences/CN / Tianjin University of Traditional Chinese Medicine/CN