fibrillary

Although chemotherapy for fibrillary astrocytoma improve overall survival, it is effective only in about 20% of cases.

Some pilocytic astrocytomas may be more fibrillary and dense in composition.

The formation of collagen which results in fibrillary collagen (most common form) is discussed here.

There is a variably dense fibrillary background.

Other names that are used are Fibrillary or Protoplasmic astrocytomas.

Cerebellar astrocytomas (most commonly pilocytic, but also fibrillary and less frequently, high-grade).

Their components include glial fibrillary acidic protein.

The cause of Alexander disease is a mutation in the gene encoding glial fibrillary acidic protein.

Homer wright rosettes contain abundant fibrillary material.

Fibrillary astrocytoma.

Fibrillary astrocytomas also called low grade or diffuse astrocytomas, are a group of primary slow growing brain tumors.

Fibrillary astrocytomas arise from neoplastic astrocytes, a type of glial cell found in the central nervous system.

The lumen of the acini may contain otherwise epithelial infoldings or fibrillary material but it is quite often empty.

Diffuse fibrillary astrocytoma.

These cell types can develop into a normal oligodendrocyte or a glial fibrillary acidic protein positive astrocyte depending on environmental factors.

GFAP (glial fibrillary acidic protein) is found in astrocytes and other glia.

The sustentacular cells are S-100 positive and focally positive for Glial fibrillary acidic protein.

Three histologic variants include: fibrillary astrocytoma, gemistocytic astrocytoma, and protoplasmic astrocytoma.

The infiltrating growth of microscopic tentacles in fibrillary astrocytomas makes complete surgical removal difficult or impossible without injuring brain tissue needed for normal neurological function.

These areas were surrounded by a dense net of oligodendrocytes in which only mild fibrillary astrocytes and scant sudanophilic lipids were found.

Glial fibrillary acidic protein has been shown to interact with MEN1 and PSEN1.

The primitive neuroectodermal cells variably express neurofilament protein, glial fibrillary acidic protein, keratin, or desmin.

Studies with Y-27632 have shown that central nervous system injury sites treated with Y-27632 causes an up regulation of glial fibrillary acid protein and neurocan.

The characteristics of the brain upon autopsy are often very similar to atypical diffuse sclerosis, such as the presence of fibrillary astrocytes and scant sudanophilic lipids.

It is caused by mutations in the gene for glial fibrillary acidic protein (GFAP) that maps to chromosome 17q21.