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Oligodendrocyte dysfunction may also be implicated in the pathophysiology of schizophrenia and bipolar disorder. [36] Oligodendrocytes are also susceptible to infection by the JC virus, which causes progressive multifocal leukoencephalopathy (PML), a condition that specifically affects white matter, typically in immunocompromised patients.
Oligodendrocyte progenitor cells (OPCs), also known as oligodendrocyte precursor cells, NG2-glia, O2A cells, or polydendrocytes, are a subtype of glia in the central nervous system named for their essential role as precursors to oligodendrocytes and myelin. [1] They are typically identified in the human by co-expression of PDGFRA and CSPG4.
Remyelination is the process of propagating oligodendrocyte precursor cells to form oligodendrocytes to create new myelin sheaths on demyelinated axons in the Central nervous system (CNS). This is a process naturally regulated in the body and tends to be very efficient in a healthy CNS. [1]
Oligodendrocyte; Oligodendrocyte progenitor cell; Pituicyte (posterior pituitary) Pineal gland. Pinealocyte; Cells derived from mesoderm.
Oligodendrocyte transcription factor (OLIG2) is a basic helix-loop-helix transcription factor encoded by the OLIG2 gene. The protein is of 329 amino acids in length, 32 kDa in size and contains one basic helix-loop-helix DNA-binding domain. [ 5 ]
Myelin oligodendrocyte glycoprotein (MOG) is a glycoprotein believed to be important in the myelination of nerves in the central nervous system (CNS). In humans this protein is encoded by the MOG gene .
Anti-MOG antibodies have been described in some patients with NMOSD [15] [16] who were negative for the aquaporin 4 (AQP-4) antibody. However, most NMOSD is an astrocytopathy, specifically an AQP4 antibody-associated disease, whereas MOG antibody-associated disease is an oligodendrocytopathy, suggesting that these are two separate pathologic entities. [2]
Oligodendrogliomas are a type of glioma that are believed to originate from the oligodendrocytes of the brain or from a glial precursor cell. They occur primarily in adults (9.4% of all primary brain and central nervous system tumors) but are also found in children (4% of all primary brain tumors).