Abstract:
:Protein-based medicines, or large molecule medicines, are innovative products used to treat various diseases like hepatitis or cancer. This new generation of molecules are usually expensive, and thus represents an attractive target for the counterfeiters. Due to the complexity of their chemical structure, their analysis for counterfeit detection is more difficult than small molecule medicines. The aim of the article is to demonstrate that Raman spectroscopy and microscopy can be used for the fast analysis of counterfeits of protein-based medicines. Twelve types of medicines, under liquid or lyophilized form, have been analyzed by a Raman spectrometer through their glass packaging and ten of them also by a Raman microscope with drop deposition on a gold plate. The optimization of the acquisition parameters has first been described. Then the identification of the studied products has been presented with the attribution of the protein bands observed on the spectra. Finally the methods were successfully applied to seven counterfeits of these products and their chemical composition identified by spectral analysis. Counterfeits can indeed be detected if the excipient profile differs, if no protein is present, or if the genuine sample has been strongly diluted by the counterfeiters. Raman spectroscopy and microscopy have thus proved efficient for the fast analysis of counterfeits of protein-based medicines.
journal_name
Forensic Sci Intjournal_title
Forensic science internationalauthors
Dégardin K,Desponds A,Roggo Ydoi
10.1016/j.forsciint.2017.07.012subject
Has Abstractpub_date
2017-09-01 00:00:00pages
313-325eissn
0379-0738issn
1872-6283pii
S0379-0738(17)30270-0journal_volume
278pub_type
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