scholarly journals Visualization of neuritic plaques in Alzheimer’s disease by polarization-sensitive optical coherence microscopy

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Bernhard Baumann ◽  
Adelheid Woehrer ◽  
Gerda Ricken ◽  
Marco Augustin ◽  
Christian Mitter ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Optical Coherence ◽  
Neuritic Plaques ◽  
Optical Coherence Microscopy

scholarly journals Spectroscopic imaging with spectral domain visible light optical coherence microscopy in Alzheimer’s disease brain samples

2017 ◽  
Vol 8 (9) ◽  
pp. 4007 ◽  
Author(s):  
Antonia Lichtenegger ◽  
Danielle J. Harper ◽  
Marco Augustin ◽  
Pablo Eugui ◽  
Martina Muck ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Visible Light ◽  
Spectroscopic Imaging ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Optical Coherence Microscopy

Different Morphology of Neuritic Plaques in the Archicortex of Alzheimer’s Disease with Comorbid Synucleinopathy: A Pilot Study

2020 ◽  
Vol 17 ◽  
Author(s):  
Nikol Jankovska ◽  
Tomas Olejar ◽  
Jaromir Kukal ◽  
Radoslav Matej
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Pilot Study ◽  
Time Course ◽  
Clinical Course ◽  
Lewy Bodies ◽  
Dystrophic Neurites ◽  
Neuritic Plaques ◽  
Structural Differences ◽  
Lewy Body Variant

Background: Bulbous neuritic changes in neuritic plaques have already been described, and their possible effect on the clinical course of the disease has been discussed. OBJECTIVE: In our study, we focused on the location and density of these structures in patients with only Alzheimer’s disease (AD) and patients with AD in comorbidity with synucleinopathies. Methods: Utilizing immunohistochemistry and confocal microscopy, we evaluated differences of neocortical and archicortical neuritic plaques and the frequency of bulbous changes in the archicortex of 14 subjects with Alzheimer’s disease (AD), 10 subjects with the Lewy body variant of Alzheimer's disease (AD/DLB), and 4 subjects with Alzheimer's disease with amygdala Lewy bodies (AD/ALB). Also, the progression and density of neuritic changes over the time course of the disease were evaluated. Results: We found structural differences in bulbous dystrophic neurites more often in AD/DLB and AD/ALB than in pure AD cases. The bulbous neuritic changes were more prominent in the initial and progressive phases and were reduced in cases with a long clinical course. Conclusion: Our results indicate that there is a prominent difference in the shape and composition of neocortical and archicortical neuritic plaques and, moreover, that bulbous neuritic changes can be observed at a higher rate in AD/DLB and AD/ALB subjects compared to pure AD subjects. This observation probably reflects that these subacute changes are more easily seen in the faster clinical course of AD patients with comorbidities.

Relation between neuritic plaques and depressive state in Alzheimer's disease

2010 ◽  
Vol 22 (1) ◽  
pp. 14-20 ◽  
Author(s):  
Gerben Meynen ◽  
Heleen Van Stralen ◽  
Jan H. Smit ◽  
Wouter Kamphorst ◽  
Dick F. Swaab ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Depressive Symptoms ◽  
Temporal Cortex ◽  
Clinical Severity ◽  
Depressive State ◽  
Neuritic Plaques ◽  
Prospective Longitudinal Study ◽  
Severity Of Dementia ◽  
Prospective Longitudinal

Meynen G, Van Stralen H, Smit JH, Kamphorst W, Swaab DF, Hoogendijk WJG. Relation between neuritic plaques and depressive state in Alzheimer's disease.Background:To investigate for the first time in a prospective study the relationship between depressive state and the neuropathological hallmarks of Alzheimer's disease, using a scale for depressive symptoms in dementia, while controlling for clinical severity of dementia.Method:Within the framework of a prospective longitudinal study of depression in Alzheimer's disease, patients with dementia underwent a clinical evaluation every six months during the last years of their lives, using the Cornell scale for depression in dementia to assess depressive symptoms and using the Functional Assessment Staging scale to control for clinical severity of dementia. The brains of 43 Alzheimer patients were obtained. The last clinical evaluations prior to death together with post-mortem neuropathology measures were analysed.Results:We found a correlation between the Cornell scores and the sum score for the density of neuritic plaques in the entire cortex (p = 0.027), and even stronger in the temporal cortex (p = 0.012). The observed correlations were independent of sex, age of death, clinical dementia severity and duration of Alzheimer's disease.Conclusions:This study shows a positive relationship between depressive state at time of death and the presence of neuritic plaques in Alzheimer's disease, which is independent of the clinical severity of dementia.

scholarly journals TMCC2 Associates with Alzheimer's Disease Pathology

2021 ◽  
Author(s):  
Paul C R Hopkins ◽  
Claire Troakes ◽  
Guy Tear
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Apoe Genotype ◽  
Coiled Coil ◽  
Amyloid Protein ◽  
Neuritic Plaques ◽  
Protein Precursor ◽  
Apoe Isoforms ◽  
First Time ◽  
Differential Affinity

We previously identified Transmembrane and Coiled-Coil 2 (TMCC2) as a protein that forms complexes with both apolipoprotein E (apoE) and the amyloid protein precursor (APP) and which displayed differential affinity for apoE isoforms apoE3 and apoE4. Here we have for the first time examined TMCC2 in the human brain and found that it is affected by APOE genotype and brain region. We further observed that TMCC2 associates with the pathology of Alzheimer's disease in dense core and neuritic plaques. TMCC2 is therefore positioned to mediate impacts of apoE4 on Alzheimer's disease pathology.

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