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After the discovery of anti-AQP4 auto-antibodies there are two kinds of Optic-Spinal MS (OSMS): Anti-AQP4 positive OSMS or Neuromyelitis optica; Anti-AQP4 negative OSMS, currently idiopathic, considered inside the Inflammatory demyelinating diseases of the central nervous system spectrum.
A retrospective study found that prevalence of neuromyelitis optica spectrum disorders was 1.5% among a random sample of neurological patients, with a MS:NMOSD ratio of 42:7. Among 13 NMOSD patients, 77% had long spinal cord lesions, 38% had severe optic neuritis, and 23% had brain or brainstem lesions. Only 56% had clinically definite NMO at ...
Anti-AQP4 diseases, are a group of diseases characterized by auto-antibodies against aquaporin 4.. After the discovery of anti-AQP4 autoantibody in neuromyelitis optica, it was found that it was also present in some patients with other clinically defined diseases, including multiple sclerosis variants like optic-spinal MS.
This disease is considered one of the borderline forms of multiple sclerosis because some authors consider them different diseases and others MS variants. Other diseases in this group are neuromyelitis optica (NMO), Balo concentric sclerosis and Marburg multiple sclerosis. [4]
The most common cause is multiple sclerosis (MS) or ischemic optic neuropathy due to thrombosis or embolism of the vessel that supplies the optic nerve. [13] [14] Up to 50% of patients with MS will develop an episode of optic neuritis, and 20–30% of the time optic neuritis is the presenting sign of MS.
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Use of named column variables x & y in Microsoft Excel. Formula for y=x 2 resembles Fortran, and Name Manager shows the definitions of x & y. In most implementations, a cell, or group of cells in a column or row, can be "named" enabling the user to refer to those cells by a name rather than by a grid reference.
Excel for the web is a free lightweight version of Microsoft Excel available as part of Office on the web, which also includes web versions of Microsoft Word and Microsoft PowerPoint. Excel for the web can display most of the features available in the desktop versions of Excel, although it may not be able to insert or edit them.