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International audienceA set of pancreatic stones and surgical specimens with chronic pancreatitis from various etiologies has been investigated by Fourier Transform Infra-Red spectroscopy and field emission scanning electron microscopy in order to gather information regarding their chemical composition and their structural characteristics at the mesoscopic scale. These physicochemical data were compared to the medical data of the patients. Regarding the pancreatic stones, the complete set of data underlines the presence of the three calcium carbonate polymorphs as well as a great diversity on their spatial distribution (core versus surface), a wide range of protein content and the presence of other phases in a limited number of samples. These results suggest that very different mechanisms are involved in stone formation. Major results have been also obtained on pancreas tissues. Chemical diversity exists also for ectopic calcifications. The presence of CA and its amorphous precursor (ACCP) constitutes a real challenge for clinicians, such chemical compounds being associated to biological parameters far from those related to calcium carbonate

comptes rendus chimie

Investigation at the micrometer scale of pancreatic calcifications in chronic pancreatitis by μFTIR spectroscopy and field emission scanning electron microscopy