Gaucher disease in mice induced by conduritol-B-epoxide: morphologic features

Area of Science:

• Biochemistry
• Cell Biology
• Neuropathology

Background:

• Gaucher disease is a lysosomal storage disorder.
• It is characterized by the accumulation of glucocerebroside in macrophages.
• Current treatments aim to manage symptoms but do not address the underlying genetic defect.

Purpose of the Study:

• To investigate the morphologic changes in mice induced with conduritol-B-epoxide.
• To characterize the ultrastructural features of potential Gaucher disease models in mice.
• To compare induced cellular changes with human Gaucher bodies.

Main Methods:

• Newborn Swiss mice were administered conduritol-B-epoxide (100 mg/kg/day) subcutaneously from day 1 to 28.
• Morphologic changes were assessed using light and electron microscopy.
• Specific tissues examined included viscera, bone marrow, CNS, spleen, and liver.

Main Results:

• Light microscopy showed no Gaucher cells in major organs or CNS.
• Ultrastructural examination revealed irregular granules and fibrils in spleen and liver histiocytes/Kupffer cells.
• Neurons in the CNS developed fibrils and tubular structures within the endoplasmic reticulum, forming inclusion bodies similar to human Gaucher bodies by week four.

Conclusions:

• Conduritol-B-epoxide administration induced ultrastructural changes in mouse neurons resembling Gaucher bodies.
• This mouse model shows potential for studying Gaucher disease pathogenesis.
• Further research is warranted to explore the therapeutic implications of this model.