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Abstract
It is well known that lithium chloride (LiCI) is able to trigger human monocytes to release tumor necrosis factor alpha (TNFα). In this study we have evaluated the In Vitro effect of LiCI on TNFα and interleukin-6 (IL-6) release by monocytes from patients affected by non-metastatic (BCa/M0) and metastatic breast cancer (BCa/M1), preincubated with autologous serum (sPt). Our data demonstrate that monocytes from cancer patients (BCa) treated with LiCI released lower amounts of TNFα compared to those from healthy donors (HD). Preincubation in autologous serum (sPt) impaired TNFα production by monocytes treated with LiCI. On the contrary, our data indicate that IL-6 production by monocytes from BCa was not impaired. Moreover, the results obtained from the same cells, preincubated in sPt and treated with LiCl, indicate that serum factors may synergize with LiCI treatment in releasing IL-6.