PMID- 29741206 OWN - NLM STAT- MEDLINE DCOM- 20191025 LR - 20191025 IS - 1099-1263 (Electronic) IS - 0260-437X (Linking) VI - 38 IP - 9 DP - 2018 Sep TI - Low concentrations of permethrin and malathion induce numerical and structural abnormalities in KMT2A and IGH genes in vitro. PG - 1262-1270 LID - 10.1002/jat.3638 [doi] AB - Pesticides are commonly used worldwide and almost every human is potentially exposed to these chemicals. Exposure to pesticides such as permethrin and malathion has been associated with hematological malignancies in epidemiological studies. However, biological evidence showing if these chemicals induce genetic aberrations involved in the etiology of leukemia and lymphoma is missing. In our previous work, we have shown that a single high exposure (200 mum, 24 hours) of permethrin and malathion induce damage in genes associated with hematological malignancies in peripheral blood mononuclear cells analyzed by interphase fluorescence in situ hybridization (FISH). In the present study, we assessed by FISH whether exposure to low concentrations (0.1 mum, 72 hours) of permethrin and malathion induce aberrations in KMT2A and IGH genes, which are involved in the etiology of leukemia and lymphoma. Peripheral blood mononuclear cells were exposed to the chemicals, and damage in these genes was assessed on interphases and metaphases. We observed that both chemicals at low concentration induced structural aberrations in KMT2A and IGH genes. A higher level of damage was observed in KMT2A gene with malathion treatment and in IGH gene with permethrin exposure. We also observed numerical aberrations induced by these chemicals. The most frequent aberrations detected on interphase FISH were also observed on metaphases. Our results show that permethrin and malathion induce genetic damage in genes associated with hematological cancer, at concentrations biologically relevant. In addition, damage was observed on dividing cells, which suggests that these cells maintain their proliferation capacity in spite of the genetic damage they possess. CI - Copyright (c) 2018 John Wiley & Sons, Ltd. FAU - Navarrete-Meneses, M P AU - Navarrete-Meneses MP AUID- ORCID: 0000-0002-2686-4101 AD - Laboratorio de Genetica y Cancer, Departamento de Genetica Humana, Instituto Nacional de Pediatria, Ciudad de Mexico, Mexico. AD - Posgrado en Ciencias Biologicas, Universidad Nacional Autonoma de Mexico, Ciudad de Mexico, Mexico. FAU - Pedraza-Melendez, A I AU - Pedraza-Melendez AI AD - Laboratorio de Genetica y Cancer, Departamento de Genetica Humana, Instituto Nacional de Pediatria, Ciudad de Mexico, Mexico. FAU - Salas-Labadia, C AU - Salas-Labadia C AUID- ORCID: 0000-0002-3301-7357 AD - Laboratorio de Genetica y Cancer, Departamento de Genetica Humana, Instituto Nacional de Pediatria, Ciudad de Mexico, Mexico. FAU - Moreno-Lorenzana, D AU - Moreno-Lorenzana D AUID- ORCID: 0000-0003-3029-4241 AD - Catedra CONACYT-Instituto Nacional de Pediatria, Mexico. FAU - Perez-Vera, P AU - Perez-Vera P AUID- ORCID: 0000-0001-5662-6991 AD - Laboratorio de Genetica y Cancer, Departamento de Genetica Humana, Instituto Nacional de Pediatria, Ciudad de Mexico, Mexico. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180509 PL - England TA - J Appl Toxicol JT - Journal of applied toxicology : JAT JID - 8109495 RN - 0 (Insecticides) RN - 0 (KMT2A protein, human) RN - 149025-06-9 (Myeloid-Lymphoid Leukemia Protein) RN - 509F88P9SZ (Permethrin) RN - EC 2.1.1.43 (Histone-Lysine N-Methyltransferase) RN - U5N7SU872W (Malathion) SB - IM MH - Cell Proliferation MH - Cell Survival MH - Cell Transformation, Neoplastic/chemically induced/genetics/metabolism/pathology MH - Cells, Cultured MH - *DNA Damage MH - Dose-Response Relationship, Drug MH - *Genes, Immunoglobulin Heavy Chain MH - Histone-Lysine N-Methyltransferase/*genetics MH - Humans MH - In Situ Hybridization, Fluorescence MH - Insecticides/*toxicity MH - Interphase MH - Leukemia/*chemically induced/enzymology/genetics/pathology MH - Leukocytes, Mononuclear/*drug effects/enzymology/pathology MH - Lymphoma/*chemically induced/enzymology/genetics/pathology MH - Malathion/*toxicity MH - Male MH - Metaphase MH - Mitotic Index MH - Myeloid-Lymphoid Leukemia Protein/*genetics MH - Permethrin/*toxicity MH - Risk Assessment OTO - NOTNLM OT - IGH OT - KMT2A OT - MLL OT - insecticides OT - leukemia OT - lymphoma OT - malathion OT - permethrin EDAT- 2018/05/10 06:00 MHDA- 2019/10/28 06:00 CRDT- 2018/05/10 06:00 PHST- 2018/02/01 00:00 [received] PHST- 2018/03/22 00:00 [revised] PHST- 2018/03/30 00:00 [accepted] PHST- 2018/05/10 06:00 [pubmed] PHST- 2019/10/28 06:00 [medline] PHST- 2018/05/10 06:00 [entrez] AID - 10.1002/jat.3638 [doi] PST - ppublish SO - J Appl Toxicol. 2018 Sep;38(9):1262-1270. doi: 10.1002/jat.3638. Epub 2018 May 9.