Galiciolli Maria Eduarda Andrade, Silva Juliana Ferreira, Prodocimo Maritana Mela, Laureano Henrique Aparecido, Calado Sabrina Loise de Morais, Oliveira Claudia Sirlene, Guiloski Izonete Cristina
Instituto de Pesquisa Pelé Pequeno Príncipe, Avenida Silva Jardim, 1632, Água Verde, Curitiba 80250-200, PR, Brazil.
Faculdades Pequeno Príncipe, Curitiba 80230-020, PR, Brazil.
Metabolites. 2023 Aug 27;13(9):975. doi: 10.3390/metabo13090975.
Vaccination programs in the first years of a child's life are effective and extremely important strategies for the successful eradication of diseases. However, as no intervention is without risks, the metal-based components of some vaccines, such as thimerosal (TMS), a preservative composed of ethylmercury, and aluminum (Al), have begun to generate distrust on the part of the population. Therefore, this study evaluated the effects of exposure to thimerosal and aluminum hydroxide (alone or in mixture) on (zebrafish) specimens. The fish were exposed to thimerosal and/or aluminum hydroxide intraperitoneally. The liver, kidney, and brain were removed for a biochemical biomarker analysis, histopathological analysis, and metal quantification. As a result, we observed changes in the activity of the analyzed enzymes (SOD, GST, GPx) in the kidney and brain of the zebrafish, a reduction in GSH levels in all analyzed tissues, and a reduction in MT levels in the kidney and liver as well as in the brain. Changes in AChE enzyme activity were observed. The biochemical results corroborate the changes observed in the lesion index and histomorphology sections. We emphasize the importance of joint research on these compounds to increase the population's safety against their possible toxic effects.
儿童生命最初几年的疫苗接种计划是成功根除疾病的有效且极其重要的策略。然而,由于没有任何干预是没有风险的,一些疫苗中的金属成分,如硫柳汞(TMS)(一种由乙基汞组成的防腐剂)和铝(Al),已开始引起公众的不信任。因此,本研究评估了暴露于硫柳汞和氢氧化铝(单独或混合)对斑马鱼样本的影响。将鱼通过腹腔注射暴露于硫柳汞和/或氢氧化铝。取出肝脏、肾脏和大脑进行生化生物标志物分析、组织病理学分析和金属定量。结果,我们观察到斑马鱼肾脏和大脑中分析的酶(超氧化物歧化酶、谷胱甘肽S-转移酶、谷胱甘肽过氧化物酶)活性发生变化,所有分析组织中的谷胱甘肽水平降低,肾脏、肝脏以及大脑中的金属硫蛋白水平降低。观察到乙酰胆碱酯酶活性发生变化。生化结果证实了在病变指数和组织形态学切片中观察到的变化。我们强调对这些化合物进行联合研究的重要性,以提高公众对其可能的毒性作用的安全性。