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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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A new simple and rapid screening method for variant transthyretin-related amyloidosis.

To screen for transthyretin ( TTR) related amyloidosis rapidly and reliably, we have developed a new method using a centrifugal concentrator device and electrospray ionization mass spectrometry (ESI-MS). Only 50 microliters of serum is needed for the analysis. After preparation of the samples with anti- TTR antibody they were passed through a 1000 kDa cut off centrifugal concentrator which retained the antibody. By analyzing the obtained filtrate with ESI-MS, variant forms of TTR was detected. TTR (Met30), with a molecular weight 32.0 Da higher than the normal form of TTR, was found in all FAP patients examined. In 3 liver transplanted FAP patients, the abnormal peaks had disappeared. In conclusion, The TTR Met30 mutation was easily detected in serum samples by electrospray ionization mass spectrometry after centrifugal concentration. The proposed method is simple to perform, as no HPLC is required, and offers a possibility to screen populations for TTR related amyloidosis.[1]

References

  1. A new simple and rapid screening method for variant transthyretin-related amyloidosis. Ando, Y., Ohlsson, P.I., Suhr, O., Nyhlin, N., Yamashita, T., Holmgren, G., Danielsson, A., Sandgren, O., Uchino, M., Ando, M. Biochem. Biophys. Res. Commun. (1996) [Pubmed]
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