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Dementia with Lewy bodies (DLB) is a type of dementia, a group of diseases involving progressive neurodegeneration of the central nervous system. [11] It is one of the two Lewy body dementias, along with Parkinson's disease dementia.
[12] [13] The Lewy body dementias—dementia with Lewy bodies (DLB), and Parkinson's disease dementia (PDD)—are distinguished by the timing when cognitive and motor symptoms appear. [14] The two Lewy body dementias are often considered to belong on a spectrum of Lewy body disease that includes Parkinson's disease. [2] [5]
Lewy neurites are abnormal neurites in diseased neurons, containing granular material and abnormal α-synuclein filaments similar to those found in Lewy bodies. [20] Like Lewy bodies, Lewy neurites are a feature of α-synucleinopathies such as dementia with Lewy bodies, Parkinson's disease, and multiple system atrophy. [21]
The DNA repair function of alpha-synuclein appears to be compromised in Lewy body inclusion bearing neurons, and this may trigger cell death. Study of synucleinopathy mouse models of Parkinson's disease indicates that alpha-synuclein pathogenesis is associated with increased DNA damage and activation of the DNA damage response.
Lewy body dementia; Lissencephaly; Locked-in syndrome; Lou Gehrig's disease – see Amyotrophic lateral sclerosis; Lumbar disc disease; Lumbar hernia; Lumbar spinal stenosis; Lupus erythematosus – neurological sequelae; Lyme disease
DLB is diagnosed when cognitive symptoms begin before or at the same time as parkinsonism. Parkinson's disease dementia is the diagnosis when Parkinson's disease is well established before the dementia occurs; that is, the onset of dementia is more than a year after the onset of parkinsonian symptoms. [9]
Dementia is a decline in cognitive function that, by definition, interferes with people’s daily activities, according to the National Institutes of Health (NIH). This includes memory, reasoning ...
Dementia with Lewy bodies, also called diffuse Lewy body disease (DLBD) Dictionary of Literary Biography: Documentary series; Dual-layer Blu-ray Disc; a command in SCL (System Control Language), of the ICL VME operating system