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Digestion. 1989;44(1):7-13.

Quantitative estimation of the collagen content in normal and pathologic pancreas tissue.

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  • 1Laboratoire d'Anatomie Pathologique, Hôpital Antoine-Béclère, Clamart, France.


The aims of the study were to measure the collagen content in pancreas using a colorimetric method and to compare the amount of collagen in normal pancreas (11 cases), diffuse fibrosing pancreatitis (17 cases), and chronic calcifying pancreatitis (11 cases). The procedure of fibrosis measurement was based on the selective capacity of two dyes, Sirius red and fast green, to set on collagen and noncollagenous proteins, respectively. After staining of sections, colors were eluted from the sections and the specific absorbance of each eluted dye was read on a spectrophotometer. The collagen content in normal pancreata was 26.5 +/- 7.2 micrograms collagen/mg protein. The amount of collagen increased with the age of patients: the mean value of the patients under the age of 50 was 18.2 +/- 4 micrograms collagen/mg protein whereas the mean value in older patients was 31.9 +/- 8 micrograms collagen/mg protein (p less than 0.01). The value of collagen in pancreas with a diffuse fibrosing pancreatitis was 44.7 +/- 7.5 micrograms collagen/mg protein. This value was significantly different from the collagen content in normal pancreas (p less than 0.001) and in pancreas with a chronic calcifying pancreatitis (77.9 +/- 8 micrograms collagen/mg protein, p less than 0.001). This method permits discrimination between different chronic diseases that can also be differentiated on a histopathologic basis.

[PubMed - indexed for MEDLINE]
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