53, 54 Whereas, the lower change in the levels of these mineral effects on cognitive abilities via poor neurotransmission, 55, 56 and impair neuropsychological function, 57 and that higher levels produce impairment of brain function via oxidative stress and neuro-degeneration processes.
The neurochemical mechanism is thought to be impairment of brain serotonin neurotransmission, but the neuropsychologic mechanisms underlying the effect are unclear.
Chronic stress has been associated with increased biological aging, suppression or abnormal regulation of immune function, impairment of brain structure and function, increased susceptibility to some types of infection and worsening of conditions like depression, heart disease and some types of cancer.
The results of the present study are the first demonstration that the evolutional and specific brain damage following the HI insult is slowly and progressively exacerbated to the contralateral hemisphere and rats who experience the HI are at risk for showing a late impairment of brain function.
However, a persisting coma can also result from transient impairment of brain function.
Impairment of brain solute clearance through the recently described glymphatic system has been linked with traumatic brain injury, sleep deprivation, and aging.
The presence of mercury in water causes impairment of brain functions, neurological disorders, and retardation of growth in children, abortion and disruption of the endocrine system (Clarkson 1992; Counter and Buchanan 2004).
This may indicate that impairment of brain maturation precedes the intrinsic disease process.
These reports suggest that abnormalities in the schizophrenia susceptibility genes, such as DISC1, likely cause an impairment of brain development resulting in schizophrenia.
Impairment of brain energy metabolism is another major facet in AD that has been revealed by in vivo studies of glucose utilization [12], [36].
