Another descendant described as a son was Shebuel, a ruler over the treasuries of David. (2) A son of Levi, so called in 1 Chronicles 6:16,17,20,43,12,71 (Hebrew 1,2,5,28,47,56); 15:7; elsewhere GERSHON (which see).
In certain inherited diseases, the myelin sheath does not develop properly, or it becomes damaged with time. One of the best-known of these disorders is X-linked adrenoleukodystrophy, or X-ALD, which more severely affects males. In X-ALD, an abnormal fatty substance accumulates in the brain, causing damage to the myelin sheath. Symptoms include progressive loss of thinking skills, muscle weakness and seizures. The disease also affects the adrenal gland, which regulates blood pressure and the body's ability to respond appropriately to stress.
Inflammation. Diseases that cause nerve inflammation can also damage the myelin sheath. Multiple sclerosis, an autoimmune disorder in which the bodyâs immune system attacks its own nerves, is the most common form of demyelinating disease.Certain types of encephalitis, or brain inflammation, can also damage myelin.his disease causes symptoms of nerve damage such as impaired motor function, speech, brain function and vision. Other viruses such as human immunodeficiency virus, or HIV, the measles virus, and herpes zoster, the virus associated with chickenpox, can also damage myelin.