Sendai virus-based liposomes enable targeted cytosolic delivery of nanoparticles in brain tumor-derived cells |
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Authors: | Veronica Dudu Veronica Rotari Maribel Vazquez |
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Institution: | 1. Laboratory of Synthesis of Multifunctional Complexes, + 55 48 34312773 88806-000, UNESC Av. Universit??ria, 1105 - Bairro Universit??rio, Crici??ma - SC, Brazil 2. Laboratory of Physiology and Biochemistry of Exercise, + 55 48 34312773 88806-000, UNESC Av. Universit??ria, 1105 - Bairro Universit??rio, Crici??ma - SC, Brazil 3. Laboratory of Experimental Physiopathology, UNESC Av. Universit??ria, 1105 - Bairro Universit??rio, Crici??ma - SC, Brazil
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Abstract: | Background Nanogold has been investigated in a wide variety of biomedical applications because of the anti-inflammatory properties. The purpose of this study was to evaluate the effects of TPU (Therapeutic Pulsed Ultrasound) with gold nanoparticles (GNP) on oxidative stress parameters and the expression of pro-inflammatory molecules after traumatic muscle injury. Materials and methods Animals were divided in nine groups: sham (uninjured muscle); muscle injury without treatment; muscle injury + DMSO; muscle injury + GNP; muscle injury + DMSO + GNP; muscle injury + TPU; muscle injury + TPU + DMSO; muscle injury + TPU + GNP; muscle injury + TPU + DMSO + GNP. The ROS production was determined by concentration of superoxide anion, modulation of antioxidant defenses was determined by the activity of superoxide dismutase, catalase and glutathione peroxidase enzymes, oxidative damage determined by formation of thiobarbituric acid-reactive substance and protein carbonyls. The levels of interleukin-1?? (IL-1??) and tumor necrosis factor-?? (TNF-??) were measured as inflammatory parameters. Results Compared to muscle injury without treatment group, the muscle injury + TPU + DMSO + GNP gel group promoted a significant decrease in superoxide anion production and lipid peroxidation levels (p < 0.050). It also showed a significant decrease in TNF-?? and IL-1?? levels (p < 0.050) when compared to muscle injury without treatment group. Conclusions Our results suggest that TPU + DMSO + GNP gel presents beneficial effects on the muscular healing process, inducing a reduction in the production of ROS and also the expression of pro-inflammatory molecules. |
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