Related Experiment Videos
Differences in hepatic fibrosis in ICR, C3H, and C57BL/6 mice infected with Schistosoma mansoni
Abstract:
The collagen content of the liver, measured as hepatic hydroxyproline, was examined for a period of up to 52 weeks following Schistosoma mansoni infection. Hepatic fibrosis was much more marked in S. mansoni-infected mice of an outbred ICR strain than in C57BL/6J mice, while C3H/HeN mice occupied an intermediate position. The marked difference in hepatic fibrosis in ICR and C57BL/6J mice correlated with more rapid in vitro synthesis of collagen by the livers of infected ICR mice. Strains of mice exhibiting high and low levels of fibrosis provide an excellent tool for examining mechanisms of murine schistosomal hepatic fibrosis and its genetic regulation.
Insights
Different mouse strains show varying susceptibility to liver fibrosis caused by Schistosoma mansoni infection. This genetic difference in hepatic fibrosis offers a valuable model for studying disease mechanisms and genetic regulation.
Area of Science:
- Immunology
- Genetics
- Hepatology
Background:
- Schistosoma mansoni infection is a significant cause of liver disease globally.
- Hepatic fibrosis is a key pathological outcome of chronic schistosomiasis.
- Understanding the genetic basis of fibrosis severity is crucial for developing targeted therapies.
Purpose of the Study:
- To investigate the differences in hepatic fibrosis development among various mouse strains following Schistosoma mansoni infection.
- To correlate the observed fibrosis levels with in vitro collagen synthesis rates.
- To establish mouse models for studying the genetic regulation of schistosomal hepatic fibrosis.
Main Methods:
- Assessment of liver collagen content (hepatic hydroxyproline) in infected mice over 52 weeks.
- Comparative analysis of fibrosis severity across different mouse strains (ICR, C57BL/6J, C3H/HeN).
- In vitro measurement of collagen synthesis in liver samples from infected mice.
Main Results:
- Marked differences in hepatic fibrosis were observed among mouse strains: ICR mice exhibited the most severe fibrosis, C57BL/6J mice showed the least, and C3H/HeN mice were intermediate.
- Higher hepatic fibrosis in ICR mice correlated with more rapid in vitro collagen synthesis.
- The study identified distinct genetic predispositions to schistosomal hepatic fibrosis.
Conclusions:
- Mouse strain genetics significantly influence the severity of hepatic fibrosis in Schistosoma mansoni infection.
- Rapid collagen synthesis is associated with increased fibrosis in susceptible mouse strains.
- These genetically distinct mouse models are valuable tools for dissecting the mechanisms and genetic control of murine schistosomal hepatic fibrosis.