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Updated: May 4, 2026

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Cercarial Transformation and in vitro Cultivation of Schistosoma mansoni Schistosomules
Published on: August 16, 2011
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Liver collagen synthesis in schistosomiasis mansoni
Gastroenterology
|May 1, 1979
Summary
Patients with hepatosplenic schistosomiasis exhibit elevated collagen synthesis in fibrotic liver tissue. This study quantifies collagen production and amino acid precursor use, revealing increased collagen peptide synthesis and proline formation.
Area of Science:
- Biochemistry
- Hepatology
- Parasitology
Background:
- Hepatosplenic schistosomiasis is a parasitic disease causing significant liver fibrosis.
- Understanding collagen synthesis is crucial for managing liver fibrosis progression.
Purpose of the Study:
- To quantify collagen synthetic rates in human liver biopsy specimens from patients with hepatosplenic schistosomiasis.
- To investigate the utilization of key amino acid precursors (proline, arginine, glutamine) in collagen biosynthesis in fibrotic liver.
Main Methods:
- Incubation of human liver biopsy slices with radioactive proline, arginine, and glutamine.
- Quantitative assay of collagen peptide synthesis and collagen content.
- Analysis of free proline levels and proline formation from arginine.
Main Results:
- Collagen synthesis was 4- to 25-fold higher in fibrotic schistosomiasis liver specimens compared to controls.
- Liver collagen content was 2- to 5-fold greater in patients.
- Increased free proline was observed in six of nine patients, with active proline formation from arginine.
Conclusions:
- Fibrotic human liver in schistosomiasis demonstrates significantly enhanced collagen biosynthesis.
- The observed collagen synthesis rates are comparable to those in experimental animal models.
- Amino acid precursor utilization, particularly proline, plays a key role in the heightened collagen production.
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