African Journal of Food Science and Technology

Oxidative stress in human due to metallic traces elements bioconcentration in three coastal villages near phosphate treatment factory in Togo

Abstract

Mélila Mamatchi, Poutouli Wiyao, Houndji Bidossessi, Tchaou Maclewè, Pakoussi Tcha, Awaga Kwami Lumo, Bilabina Idès, Tozoou Panawé, Badanaro Fègbawè, Abalokoka Esso-Yabam, Gnandi Kissao, Agbonon Amégnona, Agbérè Sadikou, Tchangbédji Gado, Sanni Ambaliou, Amouzou Kou’santa, Jean-Louis Guéant

Human contamination by toxic heavy metals, due to pollution by phosphate waste rejection from SNPT factory in Kpémé, concern also the neighbouring villages. Through this study, we wanted to determine the level of the bioaccumulation of cadmium and lead and its impact on human oxidative stress in three villages near Kpémé. The quantity of Cd and lead in human blood were determined in Gbodjomé (control area), Agbodrafo, Goumoukopé and Aného (neighbouring villages of the factory) by atomic absorption spectrophotometry, as well as some biomarkers of oxidative stress (MDA and FRAP). The results show human contamination by heavy metals, causing a lipid peroxydation and a decrease of Ferric Reducing Activity of Plasma. The contents of lead in blood were more important in relation to those of the cadmium. The concentrations variation was as follows: 87.27 ± 12.57 μg/L to 327.88 ± 32.13 μg/L for lead and 01.01 ± 0.11 μg/L to 11.68 ± 2.38 μg/L for cadmium. Generally speaking, the heavy metals contents in the blood and the lipids peroxidation were significantly more important in Agbodrafo, Goumoukopé and Aného areas in relation to Gbodjomé area (P Ã?â?¹Ã?â?? 0.0001). The antioxidant power of the blood plasma was on the contrary significantly lower in the pollution area in relation to the control area (P Ã?â?¹Ã?â?? 0.0001). It results of this study that environment pollution caused by SNPT factory affects as well surrounding villages’ populations.

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