“…Biomarkers were also identified in blood and urine samples by the studies included in this review. Thus, hematological markers, inflammatory markers, and oxidative damage in blood were obtained in a study carried out in Brazil [18], serum albumin, alpha 1, alpha 2, beta and gamma globulines, serum creatinine, and gamma-GT were obtained in a study carried out in Italy [20], as well as, still in this country, the number of lymphocytes and subpopulation of CD3+, CD4+, CD8+-CD57+, CD19+ and CD56+, cytotoxic activity and lymphoproliferative response from NK cells, serum concentrations of IL-1beta, IL-6, INF gamma and TNF alpha [22], genetic and immunotoxicological biomarkers, dosage of iron and serum glucose levels were identified in a study in Hungary [21]. In Taiwan, Republic of China, blood samples were obtained from 90 nurses for plasma copper, ferritin, interleukin (IL)-6, and alanine aminotransferase, considering that ferritin and IL-6 are important markers for the onset of depression [23].…”