Environ Int 47:8вЂ“16Д®l Ghissassi F, Baan R, Straif K (2009) A review of human carcinogens-part D: radiation. Available from: (accessed February 2017)Д®guchi A, Nomiyama K, Devanathan G, Subramanian A, Bulbule KA, Parthasarathy P, Takahashi S, Tanabe S (2012) Different profiles of anthropogenic and naturally produced organohalogen compounds in serum from residents living near a coastal area and e-waste recycling workers in India. Geneva, Switzerland: World Health Organization. International ethical guidelines for biomedical research involving human subjects. Neurotoxicol Teratol 26:359вЂ“371Д¬ouncil for International Organizations and Medical Sciences, CIOMS (2002) World Health Organization. Ann Rev Public Health 27:103вЂ“124Д¬hiodo LM, Jacobson SW, Jacobson JL (2004) Neurodevelopmental effects of postnatal lead exposure at very low levels. Acta Cytol 49:265вЂ“272Д«rulle RJ, Pellow DN (2006) Environmental justice: human health and environmental inequalities. Environ Health Perspect 104(3):591вЂ“597Д«ohrer PL, Filho MS, Paiva RL, da Silva IL, Rados PV (2005) Assessment of micronucleus frequency in normal oral mucosa of patients exposed to carcinogens. Available online: (accessed on 18 August 2018)Д«inkova B, Lewtas J, Miskova I (1996) Biomarker studies in northern Bohemia. Challenges 4:169вЂ“187Д«asel Action Network (2005) The digital dump: Exporting re-use and abuse to Africa.

Environ Int 37:921вЂ“928Д«akare AA, Alabi OA, Gbadebo AM, Ogunsuyi OI, Alimba CG (2013) In vivo cytogenotoxicity and oxidative stress induced by electronic waste leachate and contaminated well water. Ecotoxicol Environ Saf 94:87вЂ“93ДЄsante KA, Adu-Kumi S, Nakahiro K, Takahashi S, Isobe T, Sudaryanto A, Devanathan G, Clarke E, Ansa-Asare OD, Dapaah-Siakwan S (2012) Human exposure to PCBs, PBDEs and HBCDs in Ghana: temporal variation, sources of exposure and estimation of daily intakes by infants. Sci Total Environ 423:62вЂ“72ДЄlabi OA, Bakare AA, Filippin-Monteiro FB, Sierra JA, Creczynski-Pasa TB (2013) Electronic waste leachate-mediated DNA fragmentation and cell death by apoptosis in mouse fibroblast (NIH/3T3) cell line. Toxicol Mech Methods 27(9):657вЂ“665ДЄlabi OA, Bakare AA, Xu X, Li B, Zhang Y, Huo X (2012) Comparative evaluation of environmental contamination and DNA damage induced by electronic waste in Nigeria and China. Zoologist 13:62вЂ“71 ISSN 1596 972XДЄlabi OA, Bakare AA (2017) Genetic damage induced by electronic waste leachates and contaminated underground water in two prokaryotic systems. Toxicol Environ Chem 93:1073вЂ“1088ДЄlabi OA, Bakare AA (2015) Perceived public health effects of occupational and residential exposure to electronic wastes in Lagos, Nigeria. E-waste indiscriminate disposal and primitive recycling processes may be responsible for the high blood heavy metal levels, and consequently an increased DNA damage in exfoliated buccal cells in scavenging teenagers at Alaba International market.ДЄlabi OA, Bakare AA (2011) Genotoxicity and mutagenicity of electronic waste leachates using animal bioassays. However, a negative correlation was observed between educational status and Pb, Ni, Cd, and Cr.

Furthermore, data showed a positive correlation between Pb, Ni, Cd, and Cr and the duration of scavenging of the teenagers.

Spearman correlation analyses indicated a positive correlation between the blood Pb, Ni, Cd, and Cr and induced micronucleus in the buccal exfoliated cells. Frequencies of micronucleus, karyolysis, and pycnosis in the exfoliated buccal cells in Alaba group also increased significantly compared with the control group. The blood Pb of scavenging teenagers from Alaba International market varied from 2.84 to 189.44В Ојg/L compared to the control group with a range of 0.01 to 4.21В Ојg/L. Genotoxicity assessment was through exfoliated buccal cell micronucleus assay, while questionnaire was used to collect data on factors that can contribute to the blood heavy metal levels. Blood Pb, Ni, Cd, and Cr concentrations were analyzed using graphite furnace atomic absorption spectrometry. One hundred and ninety-nine blood samples were collected from scavenging teenagers in Alaba International market ( nвЂ‰=вЂ‰95) and the control group ( nвЂ‰=вЂ‰104). This study investigated the levels of Pb, Ni, Cd, and Cr in the blood, and DNA damage in exfoliated buccal cavity of scavenging teenagers at Alaba International electronic market, Nigeria.

Chromatin negative nuclei buccal smear