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Glial fibrillary acidic protein (GFAP) is a protein that is encoded by the GFAP gene in humans. [5] It is a type III intermediate filament (IF) protein that is expressed by numerous cell types of the central nervous system (CNS), including astrocytes [6] and ependymal cells during development. [7]
Autoimmune GFAP Astrocytopathy is an autoimmune disease in which the immune system of the patient attacks a protein of the nervous system called glial fibrillary acidic protein (GFAP). It was described in 2016 by researchers of the Mayo Clinic in the United States.
A type of astrocyte with an aging-related pathology has been described over the last fifty years. Astrocytes of this subtype possess prominent cytoplasmic granules that are intensely stained by Gomori's chrome alum hematoxylin stain, and hence are termed Gomori-positive (GP) astrocytes.
GFAP is an important intermediate filament protein that allows the astrocytes to begin synthesizing more cytoskeletal supportive structures and extend pseudopodia. Ultimately, the astrocytes form a dense web of their plasma membrane extensions that fills the empty space generated by the dead or dying neuronal cells (a process called astrogliosis).
Pericytes and astrocytes endfeet (Astrocytic endfeet envelop the abluminal surface of brain capillaries, accounting for 70% to nearly 100% of their total surface area). [34] The inner blood retinal barrier (iBRB) [35] Pericytes and endfeet of glial cells like astrocytes and Müller cells. The glomerular filtration barrier: Foot processes of ...
In histology, the GFAP stain is done to determine whether cells contain glial fibrillary acidic protein, a protein found in glial cells. It is useful for determining whether a tumour is of glial origin.
He worries that a positive test result in someone without symptoms is “particularly concerning” as it would cause “significant anxiety and distress for both them and their family.” ...
Radial glia also express proteins characteristic of astrocytes, including the widely used glial fibrillary acidic protein , among others. Cytological markers that might be unique to radial glia include modified forms of nestin identified by the RC1 and RC2 antibodies that recognize the murine antigens.