title: Chromosomal aberrations and micronuclei in lymphocytes of patients before and after exposure to anti-tuberculosis drugs.
abstract: To evaluate the genetic damage induced by tuberculosis infection and also by a combination of therapeutic exposure to anti-tuberculosis (anti-TB) drugs (isoniazid + rifampicin + pyrazinamide + ethambutol or streptomycin) we have considered chromosome aberrations (CA) and micronuclei (MN) in binucleate peripheral blood lymphocytes from 36 patients diagnosed with pulmonary tuberculosis prior to receiving anti-TB drugs in the first phase and in the second phase after 6 months of therapy with anti-TB drugs. The same cytogenetic study has also been performed on 36 healthy individual controls. It was shown that the frequencies of both CA and micronucleated binucleate cells increased significantly after therapy with anti-TB drugs as compared with TB patients and controls. In addition, we observed that both cytogenetic markers (CA and MN) in patients before treatment with anti-TB drugs were significantly (P: < 0.05) higher than controls. No relationship was found between the frequency of MN and donor age. Thus, apart from drug effects, infection with tuberculosis is associated with increased CA and MN.
authors.affiliation: National Research Institute of Tuberculosis and Lung Disease, Shaheed Beheshti University of Medical Sciences and Health Services, Darabad, Bahonar Avenue, Tehran, Iran. info@nritld.com
authors.forename: M R
authors.initials: MR
authors.lastname: Masjedi
authors.forename: A
authors.initials: A
authors.lastname: Heidary
authors.forename: F
authors.initials: F
authors.lastname: Mohammadi
authors.forename: A A
authors.initials: AA
authors.lastname: Velayati
authors.forename: P
authors.initials: P
authors.lastname: Dokouhaki
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000904:Antibiotics, Antitubercular / Q000494:pharmacology; D000995:Antitubercular Agents / Q000494:pharmacology*; D016022:Case-Control Studies; D002467:Cell Nucleus / Q000187:drug effects / Q000378:metabolism; D002869:Chromosome Aberrations; D004977:Ethambutol / Q000494:pharmacology; D005260:Female; D006801:Humans; D007538:Isoniazid / Q000494:pharmacology; D008214:Lymphocytes / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D048629:Micronuclei, Chromosome-Defective; D008875:Middle Aged; D011718:Pyrazinamide / Q000494:pharmacology; D012293:Rifampin / Q000494:pharmacology; D013307:Streptomycin / Q000494:pharmacology
chemical_list: D000904:Antibiotics, Antitubercular; D000995:Antitubercular Agents; D011718:Pyrazinamide; D004977:Ethambutol; D007538:Isoniazid; D012293:Rifampin; D013307:Streptomycin