PMID- 23132144 OWN - NLM STAT- MEDLINE DCOM- 20130912 LR - 20131121 IS - 1432-0703 (Electronic) IS - 0090-4341 (Linking) VI - 64 IP - 2 DP - 2013 Feb TI - A combination of micronucleus assay and fluorescence in situ hybridization analysis to evaluate the genotoxicity of formaldehyde. PG - 337-44 LID - 10.1007/s00244-012-9828-6 [doi] AB - A genotoxic effect of formaldehyde (FA), particularly micronucleus (MN) induction, has been shown in several previous studies. The aim of the present study was to assess the frequency of micronuclei and to identify the type of chromosomal damage in Tunisian staff members working in the Pathologic Anatomy Laboratory of Farhat Hached hospital (Sousse, Tunisia) who were exposed to FA. Assessment of chromosomal damage was performed in peripheral lymphocytes of 31 FA-exposed employees compared with 31 control employees working in the administrative department of the same hospital. The clastogenic/aneugenic effect of FA was evaluated using the standard MN assay in combination with fluorescence in situ hybridization (FISH) using pan-centromeric probes. The mean level of exposure to FA was 3.4 ppm. The results showed a significant increase of MN frequency in lymphocytes of exposed workers compared with the control group (25.35 +/- 6.28 per thousand vs. 7.08 +/- 4.62 per thousand, p < 0.05). As assessed by FISH, the frequency of centromeric micronuclei (C+MN) was greater in exposed subjects than in controls (18.38 +/- 5.94 per thousand vs. 5.03 +/- 3.64 per thousand). Among the C+MN, the frequency of MN containing one centromere (C1+MN) was significantly greater in pathologists and anatomists than in controls (15.35 +/- 6.0 per thousand vs. 3.33 +/- 2.74 per thousand, p < 0.05). The results showed an effect of sex and time of FA exposure with significantly increased frequencies of all end points measuring aneuploidy (C+MN, C1+MN, and Cx+MN [more then one MN]). The increased frequency of C1+MN observed in the exposed group may suggest a slight aneugenic effect of FA exposure. FAU - Bouraoui, Sana AU - Bouraoui S AD - Department of Cytogenetic and Reproductive Biology, Farhat Hached University Teaching Hospital, Ibn EL JAZZAR Street, 4000 Sousse, Tunisia. sana_bouraoui@yahoo.fr FAU - Mougou, Soumaya AU - Mougou S FAU - Brahem, Aicha AU - Brahem A FAU - Tabka, Faten AU - Tabka F FAU - Ben Khelifa, Hela AU - Ben Khelifa H FAU - Harrabi, Imed AU - Harrabi I FAU - Mrizek, Najib AU - Mrizek N FAU - Elghezal, Hatem AU - Elghezal H FAU - Saad, Ali AU - Saad A LA - eng PT - Journal Article DEP - 20121108 PL - United States TA - Arch Environ Contam Toxicol JT - Archives of environmental contamination and toxicology JID - 0357245 RN - 0 (Air Pollutants, Occupational) RN - 0 (Mutagens) RN - 1HG84L3525 (Formaldehyde) SB - IM MH - Adult MH - Air Pollutants, Occupational/analysis/*toxicity MH - DNA Damage MH - Female MH - Formaldehyde/analysis/*toxicity MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Micronucleus Tests MH - Middle Aged MH - Mutagens/analysis/*toxicity MH - Occupational Exposure/*adverse effects MH - Risk Assessment EDAT- 2012/11/08 06:00 MHDA- 2013/09/13 06:00 CRDT- 2012/11/08 06:00 PHST- 2012/03/25 00:00 [received] PHST- 2012/10/09 00:00 [accepted] PHST- 2012/11/08 06:00 [entrez] PHST- 2012/11/08 06:00 [pubmed] PHST- 2013/09/13 06:00 [medline] AID - 10.1007/s00244-012-9828-6 [doi] PST - ppublish SO - Arch Environ Contam Toxicol. 2013 Feb;64(2):337-44. doi: 10.1007/s00244-012-9828-6. Epub 2012 Nov 8.