1
|
Xia M, Gao C, Wang H, Shang J, Liu R, You Y, Zang W, Zhang J. Novel PSEN1 (P284S) Mutation Causes Alzheimer's Disease with Cerebellar Amyloid β-Protein Deposition. Curr Alzheimer Res 2022; 19:523-529. [PMID: 35850649 PMCID: PMC9933047 DOI: 10.2174/1567205019666220718151357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 05/14/2022] [Accepted: 05/17/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND/OBJECTIVE AD-associated PSEN1 mutations exhibit high clinical heterogeneity. The discovery of these mutations and the analysis of their associations with cases such as EOAD should be critical to understanding AD's pathogenesis. METHODS We performed clinical analysis, neuroimaging, target region capture and high-throughput sequencing, and Sanger sequencing in a family of 3 generations. The underlying Alzheimer's pathology was evaluated using biomarker evidence obtained from cerebrospinal fluid (CSF) amyloid testing and 18F-florbetapir (AV-45) PET imaging. RESULTS Target region capture sequencing revealed a novel heterozygous C to T missense point mutation at the base position 284 (c.850 C>T) located in exon 8 of the PSEN1 gene, resulting in a Prolineto- Serine substitution (P284S) at codon position 850. The mutation was also identified by Sanger sequencing in 2 family members, including proband and her daughter and was absent in the other 4 unaffected family members and 50 control subjects. Cerebrospinal fluid (CSF) amyloid test exhibited biomarker evidence of underlying Alzheimer's pathology. 18F-florbetapir (AV-45) PET imaging indicated extensive cerebral cortex and cerebellar Aβ deposition. CONCLUSIONS We discovered a novel PSEN1 pathogenic mutation, P284S, observed for the first time in a Chinese family with early-onset AD.
Collapse
Affiliation(s)
- Mingrong Xia
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,These authors contributed equally to this manuscript.
| | - Chenhao Gao
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450003, Henan, China; ,These authors contributed equally to this manuscript.
| | - Huayuan Wang
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China;
| | - Junkui Shang
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450003, Henan, China;
| | - Ruijie Liu
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China;
| | - Yang You
- Department of Radiology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China
| | - Weizhou Zang
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Address correspondence to these authors at the Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; E-mails: (J.Z.) and (W.Z.)
| | - Jiewen Zhang
- Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Department of Neurology, Henan University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; ,Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450003, Henan, China; ,Address correspondence to these authors at the Department of Neurology, Zhengzhou University People’s Hospital, Henan Provincial People’s Hospital, Zhengzhou 450003, Henan, China; E-mails: (J.Z.) and (W.Z.)
| |
Collapse
|
2
|
Shinohara Y, Kato A, Kuya K, Okuda K, Sakamoto M, Kowa H, Ogawa T. Perfusion MR Imaging Using a 3D Pulsed Continuous Arterial Spin-Labeling Method for Acute Cerebral Infarction Classified as Branch Atheromatous Disease Involving the Lenticulostriate Artery Territory. AJNR Am J Neuroradiol 2017; 38:1550-1554. [PMID: 28596191 DOI: 10.3174/ajnr.a5247] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 03/27/2017] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE Branch atheromatous disease is a stroke subtype considered a risk factor for early neurologic deterioration. Meanwhile, crossed cerebellar diaschisis is thought to be influenced by the degree and location of supratentorial perfusion abnormalities and is associated with the clinical outcome in the case of an ischemic stroke. In this article, our aim was to clarify the utility of using a whole-brain 3D pulsed continuous arterial spin-labeling method as an imaging biomarker for predicting neurologic severity in branch atheromatous disease. MATERIALS AND METHODS Twenty-three patients with branch atheromatous disease in the lenticulostriate artery territory were enrolled. All patients underwent MR imaging, including DWI, 3D-TOF-MRA, and 3D-arterial spin-labeling. We measured the asymmetry index of CBF in the affected area (branch atheromatous disease), the asymmetry index of the contralateral cerebellar hemisphere (crossed cerebellar diaschisis), and the DWI infarct volume in the lenticulostriate artery territory. We also compared each parameter with the initial NIHSS score with the Pearson correlation coefficient. RESULTS Among the 23 patients, we found no correlation between NIHSS score and the asymmetry index of CBF in the affected area (branch atheromatous disease) (r = -0.027, P = .724), whereas the asymmetry index of the contralateral cerebellar hemisphere (crossed cerebellar diaschisis) and DWI infarct volumes were significantly correlated with NIHSS score (r = 0.515, P = .012; r = 0.664, P = .001, respectively). CONCLUSIONS In patients with branch atheromatous disease, 3D-arterial spin-labeling can detect crossed cerebellar diaschisis, which is correlated with the degree of neurologic severity.
Collapse
Affiliation(s)
- Y Shinohara
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| | - A Kato
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| | - K Kuya
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| | - K Okuda
- Division of Clinical Radiology (K.O.)
| | - M Sakamoto
- Division of Neurosurgery (M.S.), Department of Brain and Neurosciences, Faculty of Medicine
| | - H Kowa
- Division of Neurology (H.K.), Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Japan
| | - T Ogawa
- From the Division of Radiology (Y.S., A.K., K.K., T.O.), Department of Pathophysiological and Therapeutic Science, Faculty of Medicine
| |
Collapse
|
3
|
Floris G, Di Stefano F, Cherchi MV, Costa G, Marrosu F, Marrosu MG. Multiple Spontaneous Cerebral Microbleeds and Leukoencephalopathy in PSEN1-Associated Familial Alzheimer's Disease: Mirror of Cerebral Amyloid Angiopathy? J Alzheimers Dis 2016; 47:535-8. [PMID: 26401689 DOI: 10.3233/jad-150165] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cerebral microbleeds (CMB) might reflect specific underlying vascular pathologies like cerebral amyloid angiopathy (CAA). In the present study we report the gradient-echo MRI pattern of two siblings with P284S PSEN1 mutation. T2* gradient-echo images of the two subjects demonstrated multiple microbleeds in lobar regions. The role and causes of CMB in sporadic Alzheimer's disease (AD) patients have not been clearly established and useful contributions could derive from familial AD studies. Furthermore, since CAA is a potential risk factor for developing adverse events in AD immunization trials, the identification in vivo of CAA through non-invasive MRI methods could be useful to monitoring side effects.
Collapse
Affiliation(s)
- Gianluca Floris
- Department of Neurology, Azienda Universitaria-Ospedaliera of Cagliari and University of Cagliari, Cagliari, Italy
| | - Francesca Di Stefano
- Department of Neurology, Azienda Universitaria-Ospedaliera of Cagliari and University of Cagliari, Cagliari, Italy
| | - Maria Valeria Cherchi
- Department of Radiology, Azienda Universitaria-Ospedaliera of Cagliari and University of Cagliari, Cagliari, Italy
| | - Gianna Costa
- Multiple Sclerosis Centre, University of Cagliari, Cagliari, Italy
| | - Francesco Marrosu
- Department of Neurology, Azienda Universitaria-Ospedaliera of Cagliari and University of Cagliari, Cagliari, Italy
| | | |
Collapse
|
4
|
Wallon D, Nicolas G. Genetica delle demenze degenerative. Neurologia 2015. [DOI: 10.1016/s1634-7072(15)73962-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
5
|
Skaper SD. Alzheimer's disease and amyloid: culprit or coincidence? INTERNATIONAL REVIEW OF NEUROBIOLOGY 2012; 102:277-316. [PMID: 22748834 DOI: 10.1016/b978-0-12-386986-9.00011-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Alzheimer's disease (AD) is the largest unmet medical need in neurology today. This most common form of irreversible dementia is placing a considerable and increasing burden on patients, caregivers, and society, as more people live long enough to become affected. Current drugs improve symptoms but do not have profound neuroprotective and/or disease-modifying effects. AD is characterized by loss of neurons, dystrophic neurites, senile/amyloid/neuritic plaques, neurofibrillary tangles, and synaptic loss. Beta-amyloid (Aβ) peptide deposition is the major pathological feature of AD. Increasing evidence suggests that overexpression of the amyloid precursor protein and subsequent generation of the 39-43 amino acid residue, Aβ, are central to neuronal degeneration observed in AD patients possessing familial AD mutations, while transgenic mice overexpressing amyloid precursor protein develop AD-like pathology. Despite the genetic and cell biological evidence that supports the amyloid hypothesis, it is becoming increasing clear that AD etiology is complex and that Aβ alone is unable to account for all aspects of AD. The fact that vast overproduction of Aβ peptides in the brain of transgenic mouse models fails to cause overt neurodegeneration raises the question as to whether accumulation of Aβ peptides is indeed the culprit for neurodegeneration in AD. There is increasing evidence to suggest that Aβ/amyloid-independent factors, including the actions of AD-related genes (microtubule-associated protein tau, polymorphisms of apolipoprotein E4), inflammation, and oxidative stress, also contribute to AD pathogenesis. This chapter reviews the current state of knowledge on these factors and their possible interactions, as well as their potential for neuroprotection targets.
Collapse
Affiliation(s)
- Stephen D Skaper
- Department of Pharmacology and Anesthesiology, University of Padova, Largo E. Meneghetti, Padova, Italy
| |
Collapse
|
6
|
Langheinrich TC, Romanowski CAJ, Wharton S, Hadjivassiliou M. Presenilin-1 mutation associated with amnesia, ataxia, and medial temporal lobe T2 signal changes. Neurology 2011; 76:1435-6. [PMID: 21502605 DOI: 10.1212/wnl.0b013e318216eb5f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Tobias C Langheinrich
- Wolfson Molecular Imaging Centre, University of Manchester, Manchester, M20 3LJ, UK.
| | | | | | | |
Collapse
|
7
|
Puig J, Pedraza S, Blasco G, Daunis-I-Estadella J, Prados F, Remollo S, Prats-Galino A, Soria G, Boada I, Castellanos M, Serena J. Acute damage to the posterior limb of the internal capsule on diffusion tensor tractography as an early imaging predictor of motor outcome after stroke. AJNR Am J Neuroradiol 2011; 32:857-63. [PMID: 21474629 DOI: 10.3174/ajnr.a2400] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Early prediction of motor outcome is of interest in stroke management. We aimed to determine whether lesion location at DTT is predictive of motor outcome after acute stroke and whether this information improves the predictive accuracy of the clinical scores. MATERIALS AND METHODS We evaluated 60 consecutive patients within 12 hours of middle cerebral artery stroke onset. We used DTT to evaluate CST involvement in the motor cortex and premotor cortex, centrum semiovale, corona radiata, and PLIC and in combinations of these regions at admission, at day 3, and at day 30. Severity of limb weakness was assessed by using the motor subindex scores of the National Institutes of Health Stroke Scale (5a, 5b, 6a, 6b). We calculated volumes of infarct and fractional anisotropy values in the CST of the pons. RESULTS Acute damage to the PLIC was the best predictor associated with poor motor outcome, axonal damage, and clinical severity at admission (P < .001). There was no significant correlation between acute infarct volume and motor outcome at day 90 (P = .176, r = 0.485). The sensitivity, specificity, and positive and negative predictive values of acute CST involvement at the level of the PLIC for motor outcome at day 90 were 73.7%, 100%, 100%, and 89.1%, respectively. In the acute stage, DTT predicted motor outcome at day 90 better than the clinical scores (R(2) = 75.50, F = 80.09, P < .001). CONCLUSIONS In the acute setting, DTT is promising for stroke mapping to predict motor outcome. Acute CST damage at the level of the PLIC is a significant predictor of unfavorable motor outcome.
Collapse
Affiliation(s)
- J Puig
- Departments of Radiology, Girona Biomedical Research Institute, Hospital Universitari Dr. Josep Trueta, Spain.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Desai MK, Guercio BJ, Narrow WC, Bowers WJ. An Alzheimer's disease-relevant presenilin-1 mutation augments amyloid-beta-induced oligodendrocyte dysfunction. Glia 2011; 59:627-40. [PMID: 21294162 DOI: 10.1002/glia.21131] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Accepted: 11/30/2010] [Indexed: 11/10/2022]
Abstract
White matter pathology has been documented in the brains of familial Alzheimer's disease (FAD)-afflicted individuals during presymptomatic and preclinical stages of AD. How these defects in myelination integrity arise and what roles they may play in AD pathophysiology have yet to be fully elucidated. We previously demonstrated that triple-transgenic AD (3xTg-AD) mice, which harbor the human amyloid precursor Swedish mutation, presenilin-1 M146V (PS1(M146V) ) knock-in mutation, and tau(P301L) mutation, exhibit myelin abnormalities analogous to FAD patients and that Aβ(1-42) contributes to these white matter deficits. Herein, we demonstrate that the PS1(M146V) mutation predisposes mouse oligodendrocyte precursor (mOP) cells to Aβ(1-42) -induced alterations in cell differentiation in vitro. Furthermore, PS1(M146V) expression compromised mOP cell function and MBP protein distribution, a process that is further aggravated with exposure to Aβ(1-42) . We found that the myelination defect and MBP subcellular mislocalization triggered by PS1(M146V) and Aβ(1-42) can be effectively prevented by treatment with the GSK-3β inhibitor, TWS119, thereby implicating GSK-3β kinase activity in this pathogenic cascade. Overall, this work provides further mechanistic insights into PS1(M146V) and Aβ(1-42) -driven oligodendrocyte dysfunction andmyelin damage during early presymptomatic stages of AD, and provides a new target in oligodendrocytes for developing therapies designed to avert AD-related white matter pathology.
Collapse
Affiliation(s)
- Maya K Desai
- Department of Pharmacology and Physiology, University of Rochester School of Medicine and Dentistry, Rochester, New York, USA
| | | | | | | |
Collapse
|
9
|
Abstract
Presenilins form the catalytic part of the gamma-secretases, protein complexes that are responsible for the intramembranous cleavage of transmembrane proteins. The presenilins are involved in several biological functions, but are best known for their role in the generation of the beta-amyloid (Abeta) peptide in Alzheimer's disease and are therefore thought to be important drug targets for this disorder. Mutations in the presenilin genes cause early-onset familial Alzheimer's disease, but mutation carriers have substantial phenotypic heterogeneity. Recent evidence implicating presenilin mutations in non-Alzheimer's dementias, including frontotemporal dementia and Lewy body dementia, warrants further investigation. An increased understanding of the diversity of the molecular cell biology of the gamma-secretase complex and the effects of clinical mutations in the presenilin genes might help pave the way for improved development of drugs that are designed to target gamma-secretase enzymatic activity in Alzheimer's disease and potentially in other neurological diseases.
Collapse
Affiliation(s)
- Bruno A Bergmans
- Department of Molecular and Developmental Genetics, VIB, Leuven, Belgium; Center for Human Genetics, Katholieke Universiteit Leuven, Leuven, Belgium
| | | |
Collapse
|
10
|
Bartzokis G. Alzheimer's disease as homeostatic responses to age-related myelin breakdown. Neurobiol Aging 2009; 32:1341-71. [PMID: 19775776 DOI: 10.1016/j.neurobiolaging.2009.08.007] [Citation(s) in RCA: 385] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2008] [Revised: 08/13/2009] [Accepted: 08/17/2009] [Indexed: 12/11/2022]
Abstract
The amyloid hypothesis (AH) of Alzheimer's disease (AD) posits that the fundamental cause of AD is the accumulation of the peptide amyloid beta (Aβ) in the brain. This hypothesis has been supported by observations that genetic defects in amyloid precursor protein (APP) and presenilin increase Aβ production and cause familial AD (FAD). The AH is widely accepted but does not account for important phenomena including recent failures of clinical trials to impact dementia in humans even after successfully reducing Aβ deposits. Herein, the AH is viewed from the broader overarching perspective of the myelin model of the human brain that focuses on functioning brain circuits and encompasses white matter and myelin in addition to neurons and synapses. The model proposes that the recently evolved and extensive myelination of the human brain underlies both our unique abilities and susceptibility to highly prevalent age-related neuropsychiatric disorders such as late onset AD (LOAD). It regards oligodendrocytes and the myelin they produce as being both critical for circuit function and uniquely vulnerable to damage. This perspective reframes key observations such as axonal transport disruptions, formation of axonal swellings/sphenoids and neuritic plaques, and proteinaceous deposits such as Aβ and tau as by-products of homeostatic myelin repair processes. It delineates empirically testable mechanisms of action for genes underlying FAD and LOAD and provides "upstream" treatment targets. Such interventions could potentially treat multiple degenerative brain disorders by mitigating the effects of aging and associated changes in iron, cholesterol, and free radicals on oligodendrocytes and their myelin.
Collapse
Affiliation(s)
- George Bartzokis
- Department of Psychiatry and Biobehavioral Sciences, The David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
| |
Collapse
|
11
|
Génétique de la maladie d’Alzheimer : formes autosomiques dominantes. Rev Neurol (Paris) 2009; 165:223-31. [DOI: 10.1016/j.neurol.2008.10.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Revised: 09/17/2008] [Accepted: 10/08/2008] [Indexed: 11/20/2022]
|
12
|
Nelles M, Gieseke J, Flacke S, Lachenmayer L, Schild HH, Urbach H. Diffusion tensor pyramidal tractography in patients with anterior choroidal artery infarcts. AJNR Am J Neuroradiol 2007; 29:488-93. [PMID: 18079190 DOI: 10.3174/ajnr.a0855] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Anterior choroidal artery (AchoA) stroke often evolves into undulating hemipareses, which sometimes progress to high-grade hemiparesis or hemiplegia but may also completely regress. Spatial relationships of AchoA infarcts to corticospinal tracts (CSTs) and CST integrity were investigated with diffusion tensor imaging (DTI) to identify prognostic parameters related to diffusion anisotropy changes in AchoA stroke. MATERIALS AND METHODS Twenty-five AchoA stroke patients were prospectively examined with 3T DTI and diffusion tensor tractography (DTT) within a 3-day mean interval after onset. Analysis included the following: 1) stroke size on diffusion-weighted imaging; 2) fractional anisotropy (FA) and apparent diffusion coefficients at the largest stroke extents versus contralateral homologous structures; 3) lesion location related to CST ("involvement"); 4) amount of fiber trajectories of affected versus nonaffected CST ("fiber ratio"); and 5) presence of ipsilateral fiber disruption. Imaging findings were related to clinical status 3 months after symptom onset with respect to favorable, moderate, or unfavorable motor outcome. RESULTS FA differences (due to FA reduction in the affected versus nonaffected hemisphere) were significantly higher for patients with unfavorable outcome (P=.03). Patients with favorable outcome had nearly symmetrical FA. CSTs were involved in ischemic lesions in all but 2 patients (complete involvement, n=3; partial, n=20). Two CSTs were completely disrupted, and both patients were hemiplegic (no disruption, n=14; partial disruption, n=9). Fiber disruption and CST involvement correlated negatively with motor score after AchoA stroke (P < .01), whereas infarct size did not. CONCLUSION DTT may explain resulting motor dysfunction in patients with AchoA infarcts with more notably decreased FA being an indicator for unfavorable outcome.
Collapse
Affiliation(s)
- M Nelles
- Department of Radiology, University of Bonn Medical Center, Bonn, Germany.
| | | | | | | | | | | |
Collapse
|