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Mitochondrial alterations near amyloid plaques in an Alzheimer’s disease mouse model
Open accessAbstract
While accumulation of amyloid-β (Aβ) deposited as senile plaques is a hallmark feature of Alzheimer's disease (AD), the neurotoxicity of these deposits remains controversial. Recent in vitro studies suggested a link between elevated Aβ and mitochondrial dysfunction that might contribute to the pathogenesis of AD. However, the in vivo evidence for mitochondria dysfunction caused by Aβ is still missing. Using intravital multiphoton imaging with a range of fluorescent markers, we systematically surveyed mitochondrial structural and functional changes in AD mouse models. We observed severe impairments to be limited to the vicinity of Aβ plaques, which included reduction of both numbers and membrane potential of mitochondria and the emergence of dystrophic and fragmented mitochondria. Both neuronal soma and neurites with oxidative stress show severe alterations in mitochondrial membrane potential in amyloid precursor protein mice. These results provide in vivo evidence revealing Aβ plaques as focal sources of toxicity that lead to severe structural and functional abnormalities in mitochondria. These alterations may contribute to neuronal network dysfunction and warrant further investigation as possible targets for therapeutic intervention in AD.
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TL;DR
Using intravital multiphoton imaging in APPswe:PSEN1dE9 mice, this study found that mitochondrial structural and functional abnormalities are largely restricted to the immediate vicinity of amyloid plaques. Mitochondria far from plaques appeared mostly normal, whereas near plaques there was mitochondrial loss, fragmentation/swelling, and reduced membrane potential.
Key findings
- Mitochondrial burden was significantly decreased within 16 µm of plaque borders compared with areas far from plaques (n = 13 plaques from 4 animals).
- Mitochondrial swelling was detected near 26 of 109 imaged/analyzed plaques from six animals, while cytosolic GFP-labeled neurites showed dystrophic morphology near all plaques (7 animals). Fragmented mitochondria occurred in 18 neurons from six Tg mice, with lengths of 2–4 µm; fragmented-mitochondria neurons were 38.4 ± 9.2 per mm³ in Tg mice versus 2.1 ± 1.4 per mm³ in Wt mice (n = 6 mice per genotype).
- Far from plaques (>50 µm), mitochondrial function did not differ significantly between Tg and Wt mice: JC-1 red/green ratio was 2.04 ± 0.16 in Wt versus 2.19 ± 0.15 in Tg (n = 12 imaging sites from 3 animals each), and MTR/MTG ratio was 4.03 ± 0.16 in Wt versus 4.35 ± 0.19 in Tg.
- Near plaques, MMP decreased over a ~20 µm radius: JC-1 ratio fell to 83% of the far-from-plaque value (n = 17 plaques from 5 animals); TMRE showed reduced signal near plaques (n = 46 plaques from 3 animals); MTR/MTG ratio decreased near plaques (n = 18 plaques from 4 animals). Dystrophic neurites had lower TMRE signal than normal neurites (0.38 ± 0.02, n = 80 vs 0.97 ± 0.01, n = 82; 5 animals), and oxidized neurons/neurites also showed reduced MMP (oxidized neurons 0.15 ± 0.03, n = 12 vs normal 0.97 ± 0.01, n = 93; oxidized neurites 0.38 ± 0.02, n = 80 vs normal 0.96 ± 0.01, n = 82; 3 animals). CAA did not reduce MMP in smooth muscle cells of leptomeningeal vessels (n ≥ 21 vessels from 5 mice).
Methods
- Intravital multiphoton imaging was performed in living APPswe:PSEN1dE9 transgenic mice (7–10 months old) and age-matched nontransgenic littermate controls, using cranial window implantation and methoxy-XO4 labeling of amyloid plaques.
- Mitochondria were labeled with viral mtGFP (lentivirus and AAV), AAV-GFP, AAV-roGFP, and mitochondrial dyes including MTR, MTG, TMRE, JC-1, DiOC6, and MitoFluo Red 589; FCCP was used to validate MMP-sensitive dyes, and COX IV immunostaining assessed mitochondrial loss.
- Image stacks were processed with ImageJ and IDL; plaque boundaries were defined at half-maximum methoxy-XO4 fluorescence, mitochondrial signal was measured in concentric bands (4 or 6 µm intervals), and data were reported as mean ± SE with t tests.
Limitations
- The paper states that the MTR/MTG ratio might be affected by differential diffusion/penetration rates of the two dyes in tissue, so caution is needed when imaging deep structures.
- The paper notes that lentivirus infects neurons and glial cells, so signal decreases near plaques might reflect mitochondrial loss in both cell types; AAV-mediated neuronal labeling was used to address this.
- Evident from the text: findings are from an AD mouse model and correlational in vivo imaging, not human AD tissue or causal manipulation; the study also does not establish the sequence linking calcium dysregulation, oxidative stress, and mitochondrial abnormalities, which the authors identify as important for future experiments.
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55 Own result · 20 Own interpretation · 11 Own method · 9 Not checked yet · 3 No basis given
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In the paper
“In contrast, cytosolic GFP-labeled neurites showed dramatic swelling/dystrophic morphology near all plaques, which is consistent with previous reports in AD mouse models (Tsai et al., 2004) and AD tissue (Cras et al., 1991; Fig. 1C, bottom, D; 7 animals).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
What the sources say
- Not checked yetcites Tsai et al., 2004
- Not checked yetcites Cras et al., 1991
plaincorrelationaln = 7- Asserted: passes — The authors put it forward as true.
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In the paper
“In total, we detected mitochondrial swelling near 26 plaques from six animals, out of a total of 109 plaques that were imaged and analyzed (Fig. 1D).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
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“We observed a similar mitochondrial loss near amyloid plaques in Tg mice (data not shown) using this virus.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaincorrelational- Asserted: passes — The authors put it forward as true.
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In the paper
“No mtGFP signal was observed in the dense-core of A plaques, consistent with our observations that neurites do not traverse through plaques (Spires et al., 2005).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
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“However, a gross reduction of the mtGFP signal was observed around the methoxy-XO4-labeled plaques (Fig. 1B, top), suggesting that dense-core plaques caused a significant loss of mitochondria near the plaque borders.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
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In the paper
“Furthermore, mtGFP expression revealed mitochondrial swelling in neurites (dendrites or axons) that was observed in the immediate vicinity of a fraction of dense-core plaques (Fig. 1C, top).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaincorrelationaln = 26- Asserted: passes — The authors put it forward as true.
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In the paper
“The mitochondrial “burden” within the range of 16 m from the boundary of plaques was significantly decreased compared with that in the areas far from the plaques (n ϭ 13 plaques from 4 animals).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaincorrelationaln = 13- Asserted: passes — The authors put it forward as true.
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In the paper
“In addition to the change in number, mitochondrial morphology was also affected in Tg mouse brain.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plainn = 6- Asserted: passes — The authors put it forward as true.
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In the paper
“Remaining mitochondria near plaques were often fragmented and swollen.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
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“Furthermore, the JC-1 fluorescence ratio (red/green) decreased from 2.48 Ϯ 0.25 in untreated sites to 0.34 Ϯ 0.08 in FCCP-treated sites (n Ն 11 imaging sites from 2 animals, p Ͻ 0.001).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaindirectn = 2- Asserted: passes — The authors put it forward as true.
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In the paper
“We observed a significant reduction of both MTR signal and MTG signal, indicating loss of mitochondria in the immediate vicinity of plaques (Fig. 4C).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
hedgedcorrelationaln = 4- Asserted: passes — The authors put it forward as true.
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In the paper
“We observed severe impairments to be limited to the vicinity of A plaques, which included reduction of both numbers and membrane potential of mitochondria and the emergence of dystrophic and fragmented mitochondria.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Abstract
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“Among the six dyes, the MitoFluo Red 589 signal was very weak and photobleached rapidly, and thus was not pursued further.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaindirect- Asserted: passes — The authors put it forward as true.
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In the paper
“The lengths of fragmented mitochondria were distributed from 2 to 4 m (Fig. 2B).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plain- Asserted: passes — The authors put it forward as true.
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In the paper
“Furthermore, the ratio of MTR/MTG in remaining mitochondria decreased dramatically near plaques.The MMP decrease extended to ϳ20 m from the border of plaques (Fig. 4C; n ϭ 18 plaques from 4 animals).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaincorrelationaln = 18- Asserted: passes — The authors put it forward as true.
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In the paper
“The fluorescence signal of MTR was reduced in the FCCP-treated side compared with the untreated side while the MTG signal was unaffected (Fig. 3A).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaindirectn = 2- Asserted: passes — The authors put it forward as true.
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In the paper
“In the transgenic (Tg) mice (APPswe:PSEN1dE9), the levels of A increase with age and A plaques are observed at ϳ4 months of age, accumulating progressively afterward (Garcia-Alloza et al., 2006).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
What the sources say
- Not checked yetcites Garcia-Alloza et al., 2006
plaindirect- Asserted: passes — The authors put it forward as true.
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In the paper
“The discrepancy between these studies may be related to the much higher concentrations of synthetic A generally used in in vitro studies, or there exist compensatory mechanisms in the intact brain to accommodate diffuse low level neurotoxic insults.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
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In the paper
“A variety of in vitro investigations have revealed that mitochondria have reduced membrane potential, increased permeability, increased ROS production, altered trafficking, and aberrant fission/fusion regulation when exposed to A (Keller et al., 1997;Mattson et al., 1998; Abramov et al., 2004;Lustbader et al., 2004;Manczak et al., 2006;Wang et al., 2008;Reddy, 2009;Calkins et al., 2011;Manczak et”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
What the sources say
- Not checked yetcites Keller et al., 1997 source
- Not checked yetcites Mattson et al., 1998
- Not checked yetcites Abramov et al., 2004
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In the paper
“Using a similar approach, we also verified that both TMRE and DiOC 6 exhibited fluorescence changes in response to FCCP treatment (data not shown) in in situ assays.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plaindirect- Asserted: passes — The authors put it forward as true.
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Probably not a substantial claim. The paper’s conclusions may not depend on it.
The paper states this without a source or data behind it here, so there is nothing to check it against. The quote shows it is in the paper.
In the paper
“To consolidate the evidence for A-induced mitochondrial dysfunction in AD pathogenesis, the alterations in mitochondrial morphology and function in living animals remains to be elucidated.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Introduction
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“By exploiting this reporter, we have previously determined that oxidative stress was most dramatic in neurites near plaques, propagated to cell bodies, and preceded activation of caspases that led to cell death within 24 h (Xie et al., 2013).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
What the sources say
- Not checked yetcites Xie et al., 2013
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In the paper
“When tested in cultured CHO cells, all dyes showed mitochondriaspecific staining (data not shown), as previously described”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
plain- Asserted: passes — The authors put it forward as true.
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Probably not a substantial claim. The paper’s conclusions may not depend on it.
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In the paper
“However, it should be noted that the ratio might also be affected by a differential diffusion/penetration rate of the two dyes in tissues, so caution must be used when imaging deep structures.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
hedgedconditional- Asserted: passes — The authors put it forward as true.
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Probably not a substantial claim. The paper’s conclusions may not depend on it. It may state two separate claims as one.
A conclusion the paper draws from its own results — it cites no other source for it, so there is none to check. The quote shows it is in the paper.
In the paper
“This surprising result is in stark contrast to the numerous reports using in vitro models that demonstrate more global disruption in response to exogenous A.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
boosted- Asserted: passes — The authors put it forward as true.
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In the paper
“Thus, consistent with previous reports in cultured cells and isolated mouse lens (Pendergrass et al., 2004), MTR can be used as a functional mitochondrial marker and MTG can be used as a structural mitochondrial marker.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
What the sources say
- Not checked yetcites Pendergrass et al., 2004
plainn = 2- Asserted: passes — The authors put it forward as true.
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In the paper
“Deficiency of COX has been reported in dystrophic neurites of senile plaques (Pe ´rez-Gracia et al., 2008).”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
What the sources say
- Not checked yetcites Pe ´rez-Gracia et al., 2008
plaincorrelational- Asserted: passes — The authors put it forward as true.
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Probably not a substantial claim. The paper’s conclusions may not depend on it.
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In the paper
“Nonetheless, as the number of senile plaques increases with age, the amount and severity of neuropathological alterations will also increase, leading to progressive neural network dysfunction.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
plaindirect- Asserted: passes — The authors put it forward as true.
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Probably not a substantial claim. The paper’s conclusions may not depend on it. The paper may give no reason why it holds. It may state two separate claims as one.
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In the paper
“This reduction in MMP is a surrogate to impaired energy production by mitochondria, which would have profound implications for local metabolism and activity.”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
hedgeddirect- Asserted: passes — The authors put it forward as true.
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It may state two separate claims as one.
The paper relies on this without support.
The APPswe:PSEN1dE9 mouse model is a valid model for studying A plaque-associated mitochondrial alterations in Alzheimer's disease.
“Transgenic mice (7 to 10 months old) of either sex expressing mutant human APPswe/human PS1-⌬E9 were used along with age-matched nontransgenic littermate controls (Borchelt et al., 1997).”
The paper relies on this without support.
FCCP collapses mitochondrial membrane potential.
“To collapse the mitochondrial membrane potential, carbonyl cyanide 4-[trifluoromethoxy] phenylhydrazone (FCCP, 10 M; Sigma) was applied to the left hemisphere before MTR and MTG loading.”
The paper relies on this without support.
There is limited evidence examining the role of mitochondria in vivo, particularly in the presence of classical AD pathology such as senile plaques.
“While these results, as well as investigations in postmortem human tissue, have built a strong case for mitochondrial dysfunction in AD, there is limited evidence examining the role of mitochondria in vivo, particularly in the presence of classical AD pathology, e.g., senile plaques.”
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The source backs part of the claim, not all of it — or backs it for a different population, condition or comparison.
In the citing paper
“Excessive Ca2+ accumulation into mitochondria leads to decreased mitochondrial membrane potential and increased ROS production in the same AD mouse model [67,68,70].”
From Role of Oxidative Damage in Alzheimer’s Disease and Neurodegeneration: From Pathogenic Mechanisms to Biomarker Discovery (2021) · cites this paper as [70]
Experimental — accuracy not yet measuredIn the citing paper
“Aβ can be toxic on neuronal mitochondria and causes Ca2+ elevation, changes in mitochondrial size and shape in APP/PS1 AD mouse model [70].”
From Role of Oxidative Damage in Alzheimer’s Disease and Neurodegeneration: From Pathogenic Mechanisms to Biomarker Discovery (2021) · cites this paper as [70]
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
Each contradiction between two passages listed here was confirmed by an independent check.
Rated minor: it would not touch a result — a value no result rests on, a p-value that stays on the same side of the significance level, or a conflict that is clerical, resolved elsewhere in the paper, or outside its own findings.
In the paper
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
“AAVmediated GFP expression in cortical neurons did not change the MMP indicated by TMRE staining (0.99 Ϯ 0.02 in GFP-negative neurons, n ϭ 23, vs 0.95 Ϯ 0.02 in GFP-positive neurons, n ϭ 26; 3 animals;”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
“Right insert indicates that no significant change of MMP induced by AAV-mediated GFP expression (n ϭ 5 animal, p Ͻ 0.001).”
Rated minor: it would not touch a result — a value no result rests on, a p-value that stays on the same side of the significance level, or a conflict that is clerical, resolved elsewhere in the paper, or outside its own findings.
In the paper
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Results
“0.38 Ϯ 0.02 in oxidized neurites, n ϭ 80, vs 0.96 Ϯ 0.01 in normal neurites, n ϭ 82; 3 animals;”
§ Neurobiology of Disease Mitochondrial Alterations near Amyloid Plaques in an Alzheimer's Disease Mouse Model > Discussion
“n ϭ 8 oxidized neurites from 3 animals, p Ͻ 0.001”
Citations
Cites
Gauthier, S. G., Reisberg, ., Zaudig, M., Petersen, R. C., Ritchie, K. A., Broich, K., Belleville, S., Brodaty, H., Bennett, D. A., Chertkow, H. M., et al. (2006) · The Lancet · doi:10.1016/s0140-6736(06)68542-5 · Cited by 4,094
Mitochondria: Dynamic Organelles in Disease, Aging, and Development
Chan, D. C. (2006) · Cell · doi:10.1016/j.cell.2006.06.010 · Cited by 1,987
Ankarcrona, M., Dypbukt, J. M., Bonfoco, E., Zhivotovsky, B., Orrenius, S., Lipton, S. A., & Nicotera, P. (1995) · Neuron · doi:10.1016/0896-6273(95)90186-8 · Cited by 1,884
Mitochondrial abnormalities in Alzheimer's disease
Hirai, K., Aliev, G., Nunomura, A., Fujioka, H., Russell, R. L., Atwood, C. S., Johnson, A. B., Kress, Y., Vinters, H. V., Tabaton, M., et al. (2001) · The Journal of Neuroscience · doi:10.1523/jneurosci.21-09-03017.2001 · Cited by 1,367 · cited 2×
“, 2006) and altered mitochondrial structure has been observed (Hirai et al., 2001; Moreira et al., 2007).”
BackgroundABAD Directly Links Aß to Mitochondrial Toxicity in Alzheimer's Disease
Lustbader, J. W., Cirilli, M., Lin, C., Xu, H. W., Takuma, K., Wang, N., Caspersen, C., Chen, X., Pollak, S., Chaney, M., et al. (2004) · Science · doi:10.1126/science.1091230 · Cited by 1,303
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“Fluorescent probes for monitoring MMP have been frequently used for assessing mitochondrial function (Johnson et al., 1981; Perry et al., 2011; Nicholls, 2012).”
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“…increased ROS production, altered trafficking, and aberrant fission/fusion regulation when exposed to A (Keller et al., 1997; Mattson et al., 1998; Abramov et al., 2004; Lustbader et al., 2004; Manczak et al., 2006; Wang et al., 2008; Reddy, 2009; Calkins et al., 2011; Manczak et al., 2011).”
BackgroundMitochondria in neuroplasticity and neurological disorders
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“JC-1 is another vital functional mitochondrial dye used in vitro (Reers et al., 1991; Ankarcrona et al., 1995).”
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Cited by
Sorted by citations
Items 101–182 of 182
Callens, M., Loncke, J., & Bultynck, G. (2022) · Cells · doi:10.3390/cells11121963 · Cited by 30
“In both AD and WS, this leads to mitochondrial dysfunction and increases in ROS production [108–111 Another very interesting link between AD and WS is through S1R.”
BackgroundResultROCK2 inhibition: A futuristic approach for the management of Alzheimer’s disease
Mani, S., Jindal, D., Chopra, H., Jha, S. K., Singh, S. K., Ashraf, G. M., Kamal, M., Iqbal, D., Chellappan, D. K., Dey, A., et al. (2022) · Neuroscience & Biobehavioral Reviews · doi:10.1016/j.neubiorev.2022.104871 · Cited by 29
Dynamin‐like protein 1 cleavage by calpain in Alzheimer’s disease
Jiang, S., Shao, C., Tang, F., Wang, W., & Zhu, X. (2019) · Aging Cell · doi:10.1111/acel.12912 · Cited by 27
“Mitochondrial numbers were reduced and became dystrophic and fragmented in the vicinity of plaques in APP/PS1 mice revealed by real‐time imaging study (Xie et al., 2013).”
BackgroundTiwari, V., Singh, J., Tiwari, P., Chaturvedi, S., Gupta, S., Mishra, A., Singh, S., Wahajuddin, M., Hanif, K., & Shukla, S. (2023) · European Journal of Pharmacology · doi:10.1016/j.ejphar.2023.175623 · Cited by 25
Kulovic‐Sissawo, A., Tocantins, C., Diniz, M. S., Weiß, E., Steiner, A. J., Tokic, S., Madreiter‐Sokolowski, C. T., Pereira, S. P., & Hiden, U. (2024) · Biology · doi:10.3390/biology13020070 · Cited by 27
“The first in vivo study with transgenic mice investigating mitochondrial abnormalities occurring close to A β plaques was published in 2013 [246], which demonstrated that mitochondria proximal to dense A β plaques reveal structural and functional abnormalities, including reduced MMP, swollen and…”
BackgroundInterrelationship between Changes in the Amyloid β 42/40 Ratio and Presenilin 1 Conformation
Zoltowska, K. M., Maesako, M., & Berezovska, O. (2016) · Molecular Medicine · doi:10.2119/molmed.2016.00127 · Cited by 23
Mitochondrial defects: An emerging theranostic avenue towards Alzheimer's associated dysregulations
Mani, S., Swargiary, G., Singh, M., Agarwal, S., Dey, A., Ojha, S. K., & Jha, N. K. (2021) · Life Sciences · doi:10.1016/j.lfs.2021.119985 · Cited by 24
Mitochondrial dysfunction: A potential target for Alzheimer’s disease intervention and treatment
Ke, J., Tian, Q., Xu, Q., Fu, Z., & Fu, Q. (2021) · Drug Discovery Today · doi:10.1016/j.drudis.2021.04.025 · Cited by 23
Olesen, M. A., & Quintanilla, R. A. (2023) · Molecular Neurobiology · doi:10.1007/s12035-023-03434-4 · Cited by 23
“Decreased mitochondrial membrane potential (ΔΨm) has also been considered a vital sign of mitochondrial injury observed in the brain cortex of APP mice [165].”
BackgroundOligomeric amyloid β preferentially targets neuronal and not glial mitochondrial‐encoded mRNAs
Mastroeni, D., Nolz, J., Khdour, O. M., Sekar, S., Delvaux, E., Cuyugan, L., Liang, W. S., Hecht, S. M., & Coleman, P. D. (2018) · Alzheimer s & Dementia · doi:10.1016/j.jalz.2017.12.005 · Cited by 21
“In vitro [19], mouse model [17,20], and human studies [21] reveal that both amyloid b (Ab) and oligomeric amyloid b (OAb) are toxic to mitochondria, suggesting that selected Ab species may be responsible for the metabolic deficit observed in AD.”
Siwach, A., Patel, H., Khairnar, A., & Parekh, P. (2025) · CNS Neuroscience & Therapeutics · doi:10.1111/cns.70192 · Cited by 21
“Furthermore, elevated ROS promotes the accumulation of pathological form of Aβ protein and phosphorylated-tau protein which ultimately forms Aβ-plaques and neurofibrillary tangles, inducing mitochondrial impairments, thus creating a vicious cycle [77, 78].”
Zhou, Q., Zheng, H. X., Chen, J., Li, C., Du, Y., Xia, H., & Gao, H. (2018) · Metabolic Brain Disease · doi:10.1007/s11011-018-0274-7 · Cited by 22
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Priyanka, & Seth, P. (2022) · Frontiers in Cell and Developmental Biology · doi:10.3389/fcell.2022.903031 · Cited by 17
Mitochondrial Ca2+ Signaling and Bioenergetics in Alzheimer’s Disease
Arnst, N., Redolfi, N., Lia, A., Bedetta, M., Greotti, E., & Pizzo, P. (2022) · Biomedicines · doi:10.3390/biomedicines10123025 · Cited by 19
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Anzovino, A., Canepa, E., Alves, M., Lemon, N. L., Carare, R. O., & Fossati, S. (2023) · Cells · doi:10.3390/cells12242840 · Cited by 19
Mitophagy in Neurodegenerative Diseases: Mechanisms of Action and the Advances of Drug Discovery
Yang, P., Wen, S., Wang, X., Hu, X., Zhao, M., Wang, A., Wu, Y., Ouyang, L., & Wang, G. (2025) · Journal of Medicinal Chemistry · doi:10.1021/acs.jmedchem.4c01779 · Cited by 17
Neuroinflammation increases oxygen extraction in a mouse model of Alzheimer’s disease
Liu, C., Cárdenas‐Rivera, A., Teitelbaum, S., Birmingham, A., Alfadhel, M. A. H., & Yaseen, M. A. (2024) · Alzheimer s Research & Therapy · doi:10.1186/s13195-024-01444-5 · Cited by 15
“This correlates well with observations of reduced mitochondrial function in AD mice at age 7–10 months [81] and reduced EEG rhythms observed in MCI patients [79].”
BackgroundAssembly of 809 whole mitochondrial genomes with clinical, imaging, and fluid biomarker phenotyping
Ridge, P. G., Wadsworth, M. E., Miller, J. B., Saykin, A. J., Green, R. C., Initiative, T. A. D. N., & Kauwe, J. S. K. (2018) · Alzheimer s & Dementia · doi:10.1016/j.jalz.2017.11.013 · Cited by 15
“the ratio of mitochondrial genomes to nuclear genomes) decreases in cerebrospinal fluid [8,9], mitochondrial morphology changes [4,10], mitochondrial-encoded enzymes in the electron transport chain are altered [5,11], amyloid plaques aggregate in mitochondria [12,13], and many of these changes take place near plaques…”
BackgroundKotah, J. M., Kater, M. S. J., Brosens, N., Lesuis, S. L., Tandari, R., Blok, T. M., Marchetto, L., Yusaf, E., Koopmans, F., Smit, A. B., et al. (2023) · Alzheimer s & Dementia · doi:10.1002/alz.13569 · Cited by 15
“66 This aggravation of mitochondrial proteins in ES-exposed APP/PS1 mice might also be caused by alterations in the (re-)activity of the hypothalamic-pituitary-adrenal axis, induced by ES, 67 as stress hormone exposure influences bothA β metabolism 8,9,68 andmitochondrial health.”
Gómez, C. A., Fu, B., Sakadžić, S., & Yaseen, M. A. (2018) · Neurophotonics · doi:10.1117/1.nph.5.4.045008 · Cited by 15
“’s observations of mitochondrial loss near plaque borders, and our observed variations in NADH phasor clusters with plaque proximity support their observations of Aβ variations in mitochondrial membrane potential.(6) Conversely, our observations of plaque-induced variations in lipofuscin fluorescence lifetime were una…”
BackgroundFluorescence microscopic platforms imaging mitochondrial abnormalities in neurodegenerative diseases
Wang, Y., Wang, P., & Li, C. (2023) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2023.114841 · Cited by 13
Caruana, M., Camilleri, A., Farrugia, M. Y., Ghio, S., Jakubíčková, M., Cauchi, R. J., & Vassallo, N. (2021) · Molecules · doi:10.3390/molecules26051444 · Cited by 13
“Interestingly, both mitochondrial swelling and loss of cyto c from mitochondria have been shown using multiphoton microscopy in the brains of living mouse models of AD (APP/PS1 transgenic mice) in the vicinity of Aβ plaques [48].”
BackgroundCao, Y., Xu, S., Liu, J., Zhao, S., & Yan, J. (2023) · Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy · doi:10.1016/j.saa.2023.123564 · Cited by 12
Poration of mitochondrial membranes by amyloidogenic peptides and other biological toxins
Vassallo, N. (2024) · Journal of Neurochemistry · doi:10.1111/jnc.16213 · Cited by 13
“Similarly, intravital multiphoton imaging of AD mouse model (APP/PS1) brains showed dystrophic mitochondria with severe functional and structural abnormalities in the vicinity of A β plaques (Xie et al., 2013 ).”
Ratiometric Imaging of Mitochondrial Hydrogen Peroxide in Aβ42-Mediated Neurotoxicity
Li, X., Zhang, Y., & Ai, H. (2022) · ACS Sensors · doi:10.1021/acssensors.1c01381 · Cited by 12
Sadleir, K. R., Popović, J., Khatri, A. W., & Vassar, R. J. (2022) · PLoS ONE · doi:10.1371/journal.pone.0263332 · Cited by 11
Zhai, Z., Xie, D., Qin, T., Zhong, Y., Xu, Y., & Sun, T. (2022) · Neuroscience · doi:10.1016/j.neuroscience.2022.09.012 · Cited by 11
Song, M., & Fan, X. (2023) · International Journal of Molecular Sciences · doi:10.3390/ijms24098398 · Cited by 11
“Mitochondrial abnormalities, such as a decreased respiratory capacity, increased mitochondrial fragmentation, and fragmented mitochondrial cristae, have been seen in AD brains prior to pathological A β plaque deposition [119,120].”
BackgroundMastroeni, D., Khdour, O. M., Arce, P. M., Hecht, S. M., & Coleman, P. D. (2015) · ACS Chemical Neuroscience · doi:10.1021/cn500323q · Cited by 11
Dai, Y., Ma, T., Xiangyi, R., Wei, J., Fu, W., Ma, Y., Xu, S., & Zhang, Z. (2016) · Neuroscience Letters · doi:10.1016/j.neulet.2016.07.044 · Cited by 10
Steffen, J., Stenzel, J., Ibrahim, S. M., & Pahnke, J. (2018) · Journal of Alzheimer s Disease · doi:10.3233/jad-180395 · Cited by 11
“Mitochon304 drial alterations occur particularly in the vicinity of 305 amyloid plaques [41].”
Gandbhir, O., & Sundaram, P. (2020) · Metabolic Brain Disease · doi:10.1007/s11011-019-00520-2 · Cited by 10
“…abnormalities such as dystrophic neurites, the loss of dendritic branches and the pathological alteration of the dendritic spines in the brains of AD cases (Palop andMucke 2010; Parthsarathy et al. 2013; Rijal et al. 2013; Xie et al. 2013) are correlated with intraneuronal accumulation of Aβ.”
BackgroundZhao, F., Qiao, P., Yan, N., Gao, D., Liu, M., & Yan, Y. P. (2015) · Neurochemical Research · doi:10.1007/s11064-015-1807-7 · Cited by 11
“The brains of living mouse of AD models (APPswe: PSEN1dE9) showed a spectrum of mitochondrial abnormalities: mitochondrial loss, structural abnormalities, and functional distress [19].”
BackgroundDrabik, K., Piecyk, K., Wolny, A., Szulc‐Dąbrowska, L., Dębska–Vielhaber, G., Vielhaber, S., Duszyński, J., Malińska, D., & Szczepanowska, J. (2021) · The FASEB Journal · doi:10.1096/fj.202001978rr · Cited by 10
Dietary Phytochemicals in Neurodegenerative Disease
Jacquet, A. D. R., Tambe, M. A., & Rochet, J. (2017) · Elsevier eBooks · doi:10.1016/b978-0-12-802928-2.00018-7 · Cited by 8
Kim, T.-H., Son, W. S., Morshed, M. N., Londhe, A. M., Jung, S. Y., Park, J., Park, W., Lim, S. M., Park, K. D., Cho, S. J., et al. (2017) · European Journal of Medicinal Chemistry · doi:10.1016/j.ejmech.2017.09.033 · Cited by 11
PHB2 Alleviates Neurotoxicity of Prion Peptide PrP106–126 via PINK1/Parkin-Dependent Mitophagy
Zheng, X., Liu, K., Xie, Q., Xin, H., Chen, W., Lin, S.-Y., Feng, D., & Zhu, T. (2023) · International Journal of Molecular Sciences · doi:10.3390/ijms242115919 · Cited by 8
“It has been documented that mitochondrial dysfunction contributes to the formation of A β plaques and neuro fi brillary tangles, which are de fi ning features of Alzheimer’s disease, and this, in turn, exacerbates mitochondrial defects [45,46].”
BackgroundZhong, H., An, X., Li, Y., Cai, M., Ahmad, O., Shang, J., & Zhou, J. (2019) · RSC Advances · doi:10.1039/c8ra09786k · Cited by 8
Potential of Fluorescent Nanoprobe in Diagnosis and Treatment of Alzheimer’s Disease
Lin, J., Li, H., Guo, J., Xu, Y., Li, H., Yan, J., Wang, Y., Chen, H., & Yuan, Z. (2022) · Nanomedicine · doi:10.2217/nnm-2022-0022 · Cited by 8
Mechanisms of Acupuncture in Improving Alzheimer’s Disease Caused by Mitochondrial Damage
Jiang, Y.-H., He, J., Li, R., Chen, Z.-H., & Jia, B. (2022) · Chinese Journal of Integrative Medicine · doi:10.1007/s11655-022-3511-6 · Cited by 8
“In addition, the mitochondrial matrix becomes more dilute, and its density decreases.((19,20))”
BackgroundRedox-sensitive GFP to monitor oxidative stress in neurodegenerative diseases
Esposito, S., Masala, A., Sanna, S., Rassu, M., Pimxayvong, V., Iaccarino, C., & Crosio, C. (2016) · Reviews in the Neurosciences · doi:10.1515/revneuro-2016-0041 · Cited by 7
“RoGFPs have been widely used in plants (Meyer and Dick, 2010), yeast, Drosophila, and most importantly in the context of this paper, in many different mammalian animal cellular systems, including disease models: pulmonary diseases (Barlow et al., 2008; Berkelhamer et al., 2013; Gibbs-Flournoy et al., 2013; Waypa et al…”
BackgroundInfluentialCable equation for general geometry
López-Sánchez, E. J., & Romero, J. M. (2017) · Physical review. E · doi:10.1103/physreve.95.022403 · Cited by 7
Ultrastructural Changes of Caudate Nucleus in Mice Chronically Treated with Manganese
Villalobos, V., Hernández-Fonseca, J. P., Bonilla, E., et al. (2015) · Ultrastructural Pathology · doi:10.3109/01913123.2014.991885 · Cited by 5
“The mitochondrial structural alterations related to oxidative stress have been reported [47].”
A blood based mitochondrial functional index biomarker for Alzheimer's disease
Hauger, B. M., Kemna, R. E., Kueck, P. J., Strope, T. A., John, C. S., Smith, K. P., Mayfield, H. D., Herrold, E., Cox, K., Bothwell, R. J., et al. (2025) · Alzheimer s & Dementia · doi:10.1002/alz.71061 · Cited by 3
“2,5,44 Current blood-based biomarkers for AD focus on amyloid, tau, and neurodegeneration (A/T/N) measures in plasma.”
Hossain, M. K., & Chae, H. (2024) · Neurochemistry International · doi:10.1016/j.neuint.2024.105905 · Cited by 5
Manouchehri, N., Khodagholi, F., Dargahi, L., & Ahmadiani, A. (2019) · PubMed Central · doi:10.22037/ijpr.2019.1100711 · Cited by 3
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“5μm with a swelling train, where the swelling diameter varies between 4μm and 10μm, are reported in Alzheimer’s disease [41, 39, 40]; axons with a diameter of approximately 6μm and swellings with a diameter of approximately 43μm are reported in HIV-associated dementia [42, 43, 44, 45, 46].”
BackgroundMitochondrial Involvement in Neurodegenerative Dementia
Bonanni, L., Frazzini, V., Thomas, A., & ONOFRJ, M. C. (2015) · Wiley eBooks · doi:10.1002/9781119017127.ch13 · Cited by 2
Calvo-Rodríguez, M., Kharitonova, E. K., Snyder, A. C., Hou, S. S., Sanchez-Mico, M. V., Das, S., Fan, Z., Shirani, H., Nilsson, K. P. R., Serrano‐Pozo, A., et al. (2022) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2022.06.12.495840 · Cited by 2
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MINFLUX dissects nucleosome and compacting chromatin structures in living cells
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“Confocal microscopy imaging reveals that 5-HMSiR-Hoechst is cell permeable and stains the nucleus very well in living U2OS cells with intact mitochondrial function as shown by JC-1 staining [27 ] (Fig.”
Self-citationIn vivo studies of redox biochemistry in vertebrate tissues - present successes and future horizons
Naumov, L. L., Sergeeva, A. D., Katrukha, V. A., Kostyuk, A. I., Brazhe, N. A., Bilan, D. S., & Khramova, Y. V. (2025) · Redox Biochemistry and Chemistry · doi:10.1016/j.rbc.2025.100069 · Cited by 2
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Amyloid-β and Mitochondrial Membranes: A Missing Link in Alzheimer’s Pathogenesis
Houfkova, A., & Schmidt, M. (2026) · Molecular Neurobiology · doi:10.1007/s12035-026-05786-z · Cited by 2
Amyloid plaques are associated with mitochondrial dysfunction in AD
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In Vivo Imaging in Neurodegenerative Diseases
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Dynamics of amyloid plaque formation in Alzheimer’s Disease
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NEWS FROM THE SOCIETY FOR NEUROSCIENCE ANNUAL MEETING
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Mitochondrial Function and Dynamics Imaged In Vivo
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Mitochondria as a Therapeutic Target for Alzheimer's Disease
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Mitochondrial Aspects of Neuronal Pathology in Triple-Transgenic Alzheimer’s Disease Mice
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“These findings contrasted with previous studies of human AD patients and AD mice which reported neuronal mitochondrial structural abnormalities [76-79] and reduction in neuronal mitochondrial number [14, 76] in cortical and hippocampal areas.”
BackgroundResultInfluentialCerebrovascular Dysfunction and Degeneration in Alzheimer’s Disease Pathophysiology
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Mitophagy Impairments as Culprit of Alzheimer’s Disease
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In vivo imaging of neuronal mitochondrial Ca2+ transients with two-photon microscopy in awake mice
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The role of the α7 nicotinic acetylcholine receptor in a model of amyloid pathology
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Brain energy metabolism in neurodegenerative disease
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Taurine enhances cognitive function and protects against Aβ-induced mitochondrial dysfunction
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Metadata
- Authors
- Xie, H., Guan, J., Borrelli, L. A., Xu, J., Serrano-Pozo, A., & Bacskai, B. J.
- Affiliations
- Massachusetts General Hospital (US)
- Tsinghua University (CN)
- Venue
- The Journal of Neuroscience
- Publisher
- Society for Neuroscience
- Published
- 2013-10-23
- Volume
- 33
- Issue
- 43
- Pages
- 17042-17051
- ISSN
- 0270-6474 (ISSN-L)
- 1529-2401
- PMC
- PMC3807029
- OpenAlex
- W2035815961
- Semantic Scholar
- 56c270d0938a0df939e932a219eaa2a69bb16728
- Cited by
- 185
- References
- 49
- Citations by year
- 2026: 10 · 2025: 8 · 2024: 11 · 2023: 12 · 2022: 18 · 2021: 23 · 2020: 14 · 2019: 8 · 2018: 19 · 2017: 9 · 2016: 18 · 2015: 16 · 2014: 17 · 2013: 2
- FWCI
- 12.27
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- U.S. Public Health Service (2011Z02143, NCSF31100776)
- National Institute on Aging (AG024688, R01AG024688)
- National Institute of Biomedical Imaging and Bioengineering (EB 000768, R01EB000768)
- National Center for Research Resources (S10RR025645)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Keywords
- Alzheimer's disease, amyloid plaques, mitochondrial dysfunction, mitochondrial membrane potential, mitochondrial fragmentation, oxidative stress, neurites, neurotoxicity
- MeSH terms
- Alzheimer Disease, Animals, Disease Models, Animal, Mice, Transgenic, Mitochondria, Neurites, Amyloid beta-Protein Precursor, Oxidative Stress, Mice, Membrane Potential, Mitochondrial, Plaque, Amyloid
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
A language model drew the claims from the paper on 2026-10-10, under version 3 of the claim definition (model deepseek-v4.1-flash, prompt extract-v3).
A second model labelled each claim on 2026-10-10 (model jev-1.13-20260917, definition revision gold-guideline-v0.2).
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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