White Matter and Disease: Does Brain have a Role in Initiating Diseases
Received Date: Sep 15, 2017 / Accepted Date: Oct 24, 2017 / Published Date: Oct 30, 2017
Keywords: Brain; White matter; Gray matter
The brain is composed of two parts according to matter content known as gray matter and white matter. While the gray matter is composed of nerve cells, nerve fibers and myelin are the constituents of the white matter .
According to the study of Lin et al.  the location of white matter closed to the watershed area supplied by arterial blood makes it susceptible to ischemic damage. It has been indicated that ischemia in white matter to be associated with increased uptake of oxygen . Several studies have suggested that hemodynamic changes are possibly involved in white matter ischemia [5,6].
Several studies reported that the lesions of white matter (WMLs) are considered as asymptomatic lesions [7,8]. There are two types of WMLs. The first type is deep subcortical white matter (DSWMH), while the second type is periventricular (PVH) hyper-intensities. From a clinical point of view, WMLs have the potential of escalating the risk of ischemic stroke, dementia, and death [9,10]. WMLs are associated with different risk factors such as age, hypertension, diabetes, chronic kidney disease, and carotid stenosis [11-13].
From my past experience, I conducted a study and found functional alterations in white matter to play an important role in the pathology of white matter. We found that the expression of inducible nitric oxide synthase (iNOS) to have similar patterns under physiological conditions in both white matter and gray matter, but under diabetic conditions, a shift in the expression of iNOS was noted in white matter and we concluded that the expression of iNOS in white matter may explain both the progression of diabetes and the generation of diabetic neuropathies. We think that other molecular changes in white matter including decreased expression of heat shock protein (Hsp70) accompanied with increased expression of iNOS are both possibly involved in making other organs to be more likely to develop diseases .
Taken together, in modern medicine, much attention was given to gray matter on the account of white matter . It seems that white matter disease plays important roles in developing diseases and further studies are required in both functional and structural levels. Therapeutic approaches targeting white matter may produce new treatment options for diseases.
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Citation: Alkhatib AJ (2017) White Matter and Disease: Does Brain have a Role in Initiating Diseases. Brain Disord Ther 6: e124. DOI: 10.4172/2168-975X.1000e124
Copyright: © 2017 Alkhatib AJ. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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