Skip to main content
Log in

NMR Mikroskopie der menschlichen Linse

NMR-microscopic imaging of the human crystalline lens

  • Originalarbeiten
  • Published:
Spektrum der Augenheilkunde Aims and scope Submit manuscript

Zusammenfassung

Die Kataraktbildung geht mit Veränderungen des Wassergehaltes der Linse einher. Wir haben NMR-mikroskopische Untersuchungen an normalen und durch Kernstar getrübten menschlichen Linsen durchgeführt. Es fand sich in der T2-gewichteten Darstellung bei der Linse mit Kernstar eine gegenüber der normalen Linse deutlich verringerte Intensität im Linsenkern, was auf eine herabgesetzte Hydratation des Kernes bei Kernstar hinweist. Infolge der Aggregation von Linseneiweißkörpern im Rahmen der Kataraktbildung ergibt sich wahrscheinlich auch eine stärkere Bindung des Wassers an die Proteine. NMR Mikroskopie könnte ein mögliches Verfahren zur Charakterisierung von Linsentrübungen bei experimentellen Studien sein.

Summary

Cataract formation is associated with changes in the water content of the crystalline lens. We performed NMR-microscopic investigations on normal and cataractous human lenses. In comparison with normal lenses T2-weighted images show reduced intensity in the nucleus of lenses with nuclear cataract. This result suggests reduction of water content in the nuclear region due to formation of nuclear cataract. Taking into account the aggregation of proteins during cataract formation, the intensity distribution within the T2-weighted images also reflects the water-protein-binding capabilities. NMR-microscopy may be a new approach to the characterisation of cataract formation in experimental studies.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

Literatur

  1. Ahn CB, Anderson JA, Juh SC, Kim I, Garner WH, Cho ZH (1989) Nuclear magnetic resonance microscopic ocular imaging for the detection of early-stage cataract. Invest Ophthalmol Vis Sci 30: 1612–1617

    PubMed  CAS  Google Scholar 

  2. Ettl A, Schmid E, Daxer A (1994) Prevention of cataract in streptocotozin diabetic rats by verapamil eye drops. Doc Ophthalmol 85: 324

    Google Scholar 

  3. Gomori JM, Grossman RI, Shields JA, Augsburger JJ, Joseph PM, DeSimeone D (1986) Ocular MR Imaging and spectroscopy: An ex vivo study. Radiology 160: 201–205

    PubMed  CAS  Google Scholar 

  4. Kuhn W (1990) NMR microscopy-fundamentals, limits and possible applications. Angew Chem Int Ed Engl 29: 1–20

    Article  Google Scholar 

  5. Liang JN, Xiao-Yan LI (1991) Interaction and aggregation of lens crystallins. Exp Eye Res 53: 61–66

    Article  PubMed  CAS  Google Scholar 

  6. Neville MC, Paterson CA, Rae JL, Woessner DE (1974) Nuclear magnetic resonance studies and water ordering in the crystalline lens. Science 184: 1072–1074

    Article  PubMed  CAS  Google Scholar 

  7. Racz P, Tompa K, Pocsik I (1979) The state of water in normal and senile cataractous lenses studied by nuclear magnetic resonance. Exp Eye Res 28: 129–135

    Article  PubMed  CAS  Google Scholar 

  8. Seiler T, Wollensak J, Miszalok V (1986) NMR-Tomographie des menschlichen Auges. Ophthalmologica 192: 49–55

    Article  PubMed  CAS  Google Scholar 

  9. Stankeiwicz PJ, Metz KR, Sassari JW, Briggs RW (1989) Nuclear magnetic resonance study of free and bound water fractions in normal lenses. Invest Ophthalmol Vis Sci 30: 2361–2369

    PubMed  CAS  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Daxer, A., Kuhn, W., Richter, T. et al. NMR Mikroskopie der menschlichen Linse. Spektrum Augeheilkd 9, 134–136 (1995). https://doi.org/10.1007/BF03163777

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF03163777

Schlüsselwörter

Key words

Navigation