In vivo prooxidant state in Werner syndrome (WS): Results from three WS patients and two WS heterozygotes

Giovanni Pagano, Adriana Zatterale, Paolo Degan, Marco D'Ischia, Frank J. Kelly, Federico V. Pallardó, Rita Calzone, Giuseppe Castello, Christina Dunster, Aldo Giudice, Yurdanur Kilinç, Ana Lloret, Paola Manini, Roberta Masella, Emilia Vuttariello, Michel Warnau

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Abstract

The hypothesis was tested that Werner syndrome (WS) phenotype might be associated with an in vivo prooxidant state. A set of redox-related endpoints were measured in three WS patients, two of their parents, and 99 controls within a study of some cancer-prone and/or ageing-related genetic disorders. The following analytes were measured: (a) leukocyte 8-hydroxy-2′-deoxyguanosine; (b) glutathione from whole blood, and (c) plasma levels of glyoxal, methylglyoxal, 8-isoprostane, and some plasma antioxidants (uric acid, ascorbic acid, α- and γ-tocopherol). Leukocyte 8-hydroxy-2′-deoxyguanosine levels showed a significant increase in the 3 WS patients vs. 85 controls (p <10-7). The disulfide glutathione:glutahione ratio was significantly altered in WS patients (p = 0.005). Glyoxal and methylglyoxal levels were significantly increased (p = 0.018 and p = 0.007, respectively). The plasma levels of uric acid (p = 0.002) and ascorbic acid (p = 0.003) were also increased significantly in WS patients and in their parents. No significant alterations were found in the plasma levels of α- and γ-tocopherol, nor of 8-isoprostane. This is the first report of in vivo alterations of oxidative stress parameters in WS patients. Further investigations on more extensive study populations are warranted to verify the relevance of an in vivo prooxidant state in WS patients.

Original languageEnglish
Pages (from-to)529-533
Number of pages5
JournalFree Radical Research
Volume39
Issue number5
DOIs
Publication statusPublished - May 2005

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Keywords

  • Glutathione
  • Glyoxal
  • Methylglyoxal
  • Oxidative DNA damage
  • Prooxidant state
  • Werner syndrome

ASJC Scopus subject areas

  • Biochemistry

Cite this

Pagano, G., Zatterale, A., Degan, P., D'Ischia, M., Kelly, F. J., Pallardó, F. V., Calzone, R., Castello, G., Dunster, C., Giudice, A., Kilinç, Y., Lloret, A., Manini, P., Masella, R., Vuttariello, E., & Warnau, M. (2005). In vivo prooxidant state in Werner syndrome (WS): Results from three WS patients and two WS heterozygotes. Free Radical Research, 39(5), 529-533. https://doi.org/10.1080/10715760500092683