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[Alcohol-induced morphologic and biochemical corneal changes].

G Grütters1, S Ritz-Timme, J A Reichelt

  • 1Klinik für Ophthalmologie an der CAU zu Kiel. ggruetters@ophthalmol.uni-kiel.de

Der Ophthalmologe : Zeitschrift Der Deutschen Ophthalmologischen Gesellschaft
|June 13, 2002
PubMed
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Alcoholism negatively impacts cornea quality. In vitro studies show ethanol and acetaldehyde, found in alcoholics, damage corneal endothelium and stromal proteins, affecting donor cornea viability.

Area of Science:

  • Ophthalmology
  • Toxicology
  • Biochemistry

Background:

  • Corneal quality in donors with alcoholism was observed to be lower.
  • High blood ethanol concentrations correlate with elevated levels in ocular fluids.

Observation:

  • Corneas were subjected to in vitro experiments using culture media containing ethanol, formic acid, methanol, and acetaldehyde at concentrations relevant to chronic alcoholism.
  • Endothelial cell morphology and aspartic acid racemization were assessed over a 4-week cultivation period.

Findings:

  • Corneas exposed to acetaldehyde showed a decrease in endothelial cell counts.
  • Exposure to ethanol led to increased aspartic acid racemization, indicating protein degradation.
  • These findings suggest direct toxic effects of alcohol and its metabolites on corneal tissues.

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Implications:

  • Alcohol-induced changes can compromise the quality of donor corneas for transplantation.
  • Understanding these toxic effects is crucial for improving donor selection and preservation protocols.
  • Further research may elucidate specific mechanisms of alcohol toxicity on ocular tissues.