August 7, 2012
Researchers have discovered that one or more substances produced by a certain type of immune cell may be involved in the progression of multiple sclerosis (MS), an autoimmune disease affecting the brain and spinal cord, may be involved caused by. The finding might lead to new, targeted treatments for those suffering from MS.Leading researcher, Robert Lisak, M.D., a professor of neurology at Wayne State explained that B cells belong to a subset of circulating white blood cells (lymphocytes), which become immunoglobulin (antibodies) producing plasma cells when mature. However, B cells also seem to play a role in controlling other lymphocytes, particularly T cells, and help to regulate a healthy immune system.The B cells attack the brain and spinal cord in patients with MS, which could be due to the fact that the nervous system and the meninges, the covering of the brain and spinal cord, produce substances that attract the B cells. Once within the meninges or central nervous system, the activated B cells secrete one or several substances that damage oligodendrocytes, i.e. cells that produce myelin, a protective substance, yet which do not seem to affect the immunoglobulins. The scientists observed that B cells seem to be more active in MS patients. This may explain whey these cells produce toxic substances and partially why they are attracted by the nervous system and the meninges.Most of the brain is split into gray areas that contain neurons, and white areas, where neurons send their axons just like electrical cables carry messages, in order to communicate with other neurons and transfer messages from the brain to the muscles. The white parts of the brain have their particular color because the oligodendrocytes produce myelin, the axons’ coating/insulation similar to that to the plastic coating of electrical cables, which is rich in cholesterol. Myelin accelerates communication along the axons, making it more reliable, yet when this coating degrades or is attacked, it can lead to ‘leakages’ or messages being sent to the wrong receptor during communication from the brain to other body parts. The team noted that oligodendrocytes also appear to play a role in other activities, which are vital for the nerve cells and their axons.
Researchers have discovered that one or more substances produced by a certain type of immune cell may be involved in the progression of multiple sclerosis (MS), an autoimmune disease affecting the brain and spinal cord, may be involved caused by. The finding might lead to new, targeted treatments for those suffering from MS.Leading researcher, Robert Lisak, M.D., a professor of neurology at Wayne State explained that B cells belong to a subset of circulating white blood cells (lymphocytes), which become immunoglobulin (antibodies) producing plasma cells when mature. However, B cells also seem to play a role in controlling other lymphocytes, particularly T cells, and help to regulate a healthy immune system.The B cells attack the brain and spinal cord in patients with MS, which could be due to the fact that the nervous system and the meninges, the covering of the brain and spinal cord, produce substances that attract the B cells. Once within the meninges or central nervous system, the activated B cells secrete one or several substances that damage oligodendrocytes, i.e. cells that produce myelin, a protective substance, yet which do not seem to affect the immunoglobulins. The scientists observed that B cells seem to be more active in MS patients. This may explain whey these cells produce toxic substances and partially why they are attracted by the nervous system and the meninges.Most of the brain is split into gray areas that contain neurons, and white areas, where neurons send their axons just like electrical cables carry messages, in order to communicate with other neurons and transfer messages from the brain to the muscles. The white parts of the brain have their particular color because the oligodendrocytes produce myelin, the axons’ coating/insulation similar to that to the plastic coating of electrical cables, which is rich in cholesterol. Myelin accelerates communication along the axons, making it more reliable, yet when this coating degrades or is attacked, it can lead to ‘leakages’ or messages being sent to the wrong receptor during communication from the brain to other body parts. The team noted that oligodendrocytes also appear to play a role in other activities, which are vital for the nerve cells and their axons.
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