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14. Gaucher’s disease: Difference between revisions

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14. Gaucher’s disease (view source)

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'''Staining''': HE
[[File:Gaucher disease - overview.png|thumb|Overview. The blocky background probably won’t be visible on the exam.]]'''Staining''': HE


'''Organ''': Bone marrow
'''Organ''': Bone marrow


'''Description''':
'''Description''':[[File:Gaucher disease - close-up.png|thumb|Higher magnification]]The characteristics of normal bone marrow can be seen: Bony spicules/trabeculae, fat cells and basophilic regions with megakaryocytes and other cells. However, some regions are more eosinophilic, comprised of macrophages with very pale cytoplasm.
 
The characteristics of normal bone marrow can be seen: Bony spicules/trabeculae, fat cells and basophilic regions with megakaryocytes and other cells. However, some regions are more eosinophilic, comprised of macrophages with very pale cytoplasm.


'''Diagnosis''': Gaucher’s disease
'''Diagnosis''': Gaucher’s disease
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'''Theory''':
'''Theory''':


Deficiency of the glucocerebrosidase enzyme causes accumulation of the glycoside glucocerebroside. Gaucher’s disease is therefore a ''lysosomal storage disease''.
Deficiency of the glucocerebrosidase enzyme causes accumulation of the glycoside glucocerebroside. Gaucher’s disease is therefore a ''lysosomal storage disease''.[[File:Gaucher disease - intracellular accumulations.png|thumb|Inside the cytoplasm of the macrophages you can see pale accumulations.]]The bony trabeculae, fat cells and dark regions are components of normal bone marrow. The accumulation of glucocerebroside causes macrophages to be filled with this glycoside, making the macrophages’ cytoplasm very pale. Because macrophages occupy a large portion of the normal bone marrow will the function of the bone marrow be impaired, causing ''pancytopaenia''.
 
The bony trabeculae, fat cells and dark regions are components of normal bone marrow. The accumulation of glucocerebroside causes macrophages to be filled with this glycoside, making the macrophages’ cytoplasm very pale. Because macrophages occupy a large portion of the normal bone marrow will the function of the bone marrow be impaired, causing ''pancytopaenia''.


This slide is taken from a bone marrow biopsy, which is why it’s comprised of fragments of the bone marrow.
This slide is taken from a bone marrow biopsy, which is why it’s comprised of fragments of the bone marrow.


Two types of Gaucher’s disease exists. Type 1 is the non-neuronopathic type. In type 1 is only the bone marrow affected, causing pancytopaenia. Type 2 is the neuronopathic type, meaning that the CNS is affected in addition to the bone marrow. Patients with type 2 Gaucher’s disease will have CNS complication in addition to the pancytopaenia.
Two types of Gaucher’s disease exists. Type 1 is the non-neuronopathic type. In type 1 is only the bone marrow affected, causing pancytopaenia. Type 2 is the neuronopathic type, meaning that the CNS is affected in addition to the bone marrow. Patients with type 2 Gaucher’s disease will have CNS complication in addition to the pancytopaenia.
[[File:Gaucher disease - overview.png|center|thumb|Overview. The blocky background probably won’t be visible on the exam.]]
[[File:Gaucher disease - close-up.png|center|thumb|Higher magnification]]
[[File:Gaucher disease - intracellular accumulations.png|center|thumb|Inside the cytoplasm of the macrophages you can see pale accumulations.]]
[[Category:Pathology 1 - Histopathology slides]]
[[Category:Pathology 1 - Histopathology slides]]