title: [Loss of heterozygosity at microsatellite marker localised near the metalloproteinase gene in patients with PEX syndrome].
abstract: OBJECTIVE
  The aim of the study was to evaluate the possible occurrence of loss of heterozygosity (LOH) at microsatellite marker localised near the area for metalloproteinase gene in the anterior capsule, lens nucleus, iris and trabeculum samples taken from patients with pseudoexfoliation syndrome (PEX).
  
  
  METHODS
  In our study we examined 19 patients (12 women and 7 men) with PEX syndrome who underwent surgical treatment for glaucoma, cataract or both at the same time. The mean age was 75.5 +/- 4.7, range 64-86. Specimens of the iris, anterior capsule, trabeculum and lens nucleus were taken to evaluate the possible occurrence of LOH at microsatellite marker D7S820 with fluorescent multiplex PCR method.
  
  
  RESULTS
  LOH was displayed in 44% specimens of anterior capsule, 33% of iris specimen. In lens nucleus and trabeculum specimen LOH did not occur.
  
  
  CONCLUSIONS
  The high frequency of LOH in PEX patients at locus D7S820 suggests that genetic factors may be involved in the etiology and pathogenesis of PEX.
authors.affiliation: Kliniki Okulistyki Akademii Medycznej w Białymstoku.
authors.forename: Renata
authors.initials: R
authors.lastname: Zalewska
authors.forename: Zofia
authors.initials: Z
authors.lastname: Mariak
authors.forename: Witold
authors.initials: W
authors.lastname: Pepiński
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Wojnar
authors.forename: Ewa
authors.initials: E
authors.lastname: Proniewska-Skretek
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Skawrońska
authors.forename: Jerzy
authors.initials: J
authors.lastname: Janica
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017889:Exfoliation Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007498:Iris / Q000378:metabolism; D007903:Lens Capsule, Crystalline / Q000378:metabolism; D007907:Lens Nucleus, Crystalline / Q000378:metabolism; D019656:Loss of Heterozygosity; D008297:Male; D045726:Metalloproteases / Q000235:genetics*; D018895:Microsatellite Repeats; D008875:Middle Aged; D016133:Polymerase Chain Reaction / Q000379:methods
chemical_list: D045726:Metalloproteases