title: Pseudoexfoliation syndrome and trace elements.
abstract: To investigate the role of zinc and copper in the development of pseudoexfoliation (PSX) syndrome, 34 cataract patients with PSX syndrome and 27 cataract patients without PSX syndrome were included in the study and groups were matched for age and gender. During the cataract surgery, lenses were obtained intraoperatively, frozen under liquid nitrogen, and kept at -70 degrees C until processing. Zinc and copper concentrations were measured by atomic absorption spectrophotometric method after the homogenization (acid hydrolysis) of dried lenses. The mean concentration of zinc in the lens from patients with PSX (20.33 +/- 8.76 microg/g tissue; range 11.04-42.94 microg/g tissue) was significantly lower than that measured in the lens of patients without PSX (28.88 +/- 15.32 microg/g tissue; range 12.02-64.32 microg/g tissue) (P < 0.05). The mean concentration of copper in the lens from patients with PSX (29.51 +/- 10.05 microg/g tissue; range 12.69-59.71 microg/g tissue) and in the lens of patients without PSX (39.72 +/- 25.64 microg/g tissue; range 12.38-92.14 microg/g tissue) was not statistically different. The decreased content of zinc could increase oxidative stress. The results support the role of oxidative stress in the development of PSX in cataract patients.
authors: Gazi University, Faculty of Medicine, Department of Medical Biochemistry, 06510 Beşevler, Ankara, Turkey. zyildirim2004@yahoo.com
authors: Zuhal
authors: Z
authors: Yildirim
authors: N Irem
authors: NI
authors: Uçgun
authors: Nedret
authors: N
authors: Kiliç
authors: E
authors: E
authors: Gürsel
authors: Aylin
authors: A
authors: Sepici-Dinçel
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000378:metabolism; D003300:Copper / Q000378:metabolism*; D017889:Exfoliation Syndrome / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006801:Humans; D007908:Lens, Crystalline / Q000378:metabolism*; D008297:Male; D008875:Middle Aged; D018384:Oxidative Stress; D012737:Sex Factors; D013054:Spectrophotometry, Atomic / Q000379:methods; D015032:Zinc / Q000378:metabolism*
chemical_list: D003300:Copper; D015032:Zinc