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Fourier transform infrared microscopy identification of crystal deposits in tissues: clinical importance in various
L Estepa-Maurice1, C Hennequin, C Marfisi
1Laboratoire de Biochimie A, Hôpital Necker, Paris, France.
Abstract:
The presence of crystal deposits in tissues is associated with various pathologies. Sometimes their identification is useful for understanding the etiology or the mechanism of the disorder. The authors applied Fourier transform infrared microscopy (FTIRM) to the molecular characterization of crystal deposits in tissue and compared the results with those provided by histologic studies using polarized light microscope and histochemical reactions. Twenty-five biopsies were investigated. In 10 cases, the results were in good agreement. In 15 cases only FTIRM could precisely identify the crystals. In three cases, this technique allowed to characterize dihydroxyadenine crystals revealing an adenine phosphoribosyltransferase deficiency previously undiagnosed in patients presenting severe chronic renal failure. In three cases, crystal deposition was related to drug therapy. In other cases, crystal identification was useful to understand the mechanism of the pathology responsible for tissue damage and crystal deposition.
Insights
Fourier transform infrared microscopy (FTIRM) precisely identifies crystal deposits in tissues, aiding in diagnosing rare genetic disorders and understanding disease mechanisms. This advanced technique offers superior molecular characterization compared to traditional methods.
Area of Science:
- Pathology
- Biomedical Engineering
- Analytical Chemistry
Background:
- Crystal deposits in tissues are linked to various pathologies.
- Accurate identification of these crystals is crucial for understanding disease etiology and mechanisms.