title: Micronuclear and sister chromatid exchange analyses in peripheral lymphocytes of patients with oral lichen planus--a pilot study.
abstract: OBJECTIVE
  The purpose of this study was to determine the genetic instability of peripheral blood lymphocytes from patients diagnosed with oral lichen planus (OLP) by investigation of frequencies of micronuclei (MN) and sister chromatid exchange (SCE).
  
  
  METHODS
  A total of 22 newly diagnosed and untreated patients with OLP of same severity scores and twenty healthy controls participated in this study. They were all non-smokers with no previous history or family history of cancer. The periodontal status, flow rate and buffering capacity of whole mouth saliva were recorded. SCE and MN analyses were performed on peripheral blood lymphocytes of OLP patients and healthy controls.
  
  
  RESULTS
  The frequencies of MN (50.00 +/- 22.36) and SCE (6.89 +/- 1.48) in OLP patients were found to be significantly elevated compared with that in normal individuals (25.20 +/- 9.52 and 5.93 +/- 1.31; z = 3.946, P = 0.0001; z = 2.346, P = 0.019). There were no significant differences in the MN frequency and SCE between the two subgroups with reticular or erosive types of OLP.
  
  
  CONCLUSIONS
  These pilot data indicate an increased genomic instability in peripheral blood lymphocytes of a cohort of Turkish patients diagnosed with oral lichen planus as compared with that of healthy individuals. As patients with OLP may have an increased or potential risk for oral malignancy, these assays could be used in translational research to monitor beneficial effects of interventions and long-term prognosis.
authors.affiliation: Department of Oral Medicine and Surgery, Istanbul University, Istanbul, Turkey. sertanergun@gmail.com
authors.forename: S
authors.initials: S
authors.lastname: Ergun
authors.forename: S
authors.initials: S
authors.lastname: Warnakulasuriya
authors.forename: N
authors.initials: N
authors.lastname: Duman
authors.forename: A
authors.initials: A
authors.lastname: Saruhanoğlu
authors.forename: B
authors.initials: B
authors.lastname: Sevinç
authors.forename: S
authors.initials: S
authors.lastname: Oztürk
authors.forename: S
authors.initials: S
authors.lastname: Ozel
authors.forename: K
authors.initials: K
authors.lastname: Cefle
authors.forename: S
authors.initials: S
authors.lastname: Palanduz
authors.forename: H
authors.initials: H
authors.lastname: Tanyeri
mesh_terms: D000328:Adult; D014408:Biomarkers, Tumor; D016022:Case-Control Studies; D003774:Dental Plaque Index; D005260:Female; D006801:Humans; D017676:Lichen Planus, Oral / Q000097:blood* / Q000235:genetics* / Q000473:pathology; D018655:Lymphocyte Count; D008214:Lymphocytes / Q000473:pathology; D008297:Male; D048629:Micronuclei, Chromosome-Defective; D008875:Middle Aged; D010512:Periodontal Index; D010865:Pilot Projects; D011379:Prognosis; D012463:Saliva / Q000378:metabolism; D012636:Secretory Rate; D012854:Sister Chromatid Exchange
chemical_list: D014408:Biomarkers, Tumor