LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 358

Search options

  1. Book: Dementia

    Graff-Radford, Neill R.

    (Neurologic clinics ; 25,3)

    2007  

    Author's details guest ed. Neill R. Graff-Radford
    Series title Neurologic clinics ; 25,3
    Collection
    Language English
    Size XII S., S. 577 - 865 : Ill., graph. Darst.
    Publisher Saunders
    Publishing place Philadelphia u.a.
    Publishing country United States
    Document type Book
    HBZ-ID HT015275620
    ISBN 1-4160-5092-2 ; 978-1-4160-5092-6
    Database Catalogue ZB MED Medicine, Health

    More links

    Kategorien

  2. Article ; Online: Is normal pressure hydrocephalus becoming less idiopathic?

    Graff-Radford, Neill R

    Neurology

    2016  Volume 86, Issue 7, Page(s) 588–589

    MeSH term(s) Brain/diagnostic imaging ; Female ; Humans ; Hydrocephalus, Normal Pressure/diagnostic imaging ; Hydrocephalus, Normal Pressure/epidemiology ; Male ; Radiography ; Vascular Diseases/epidemiology
    Language English
    Publishing date 2016-02-16
    Publishing country United States
    Document type Editorial ; Comment
    ZDB-ID 207147-2
    ISSN 1526-632X ; 0028-3878
    ISSN (online) 1526-632X
    ISSN 0028-3878
    DOI 10.1212/WNL.0000000000002377
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Senile plaque-associated transactive response DNA-binding protein 43 in Alzheimer's disease: A case report spanning 16 years of memory loss.

    Carlos, Arenn F / Koga, Shunsuke / Graff-Radford, Neill R / Baker, Matthew C / Rademakers, Rosa / Ross, Owen A / Dickson, Dennis W / Josephs, Keith A

    Neuropathology : official journal of the Japanese Society of Neuropathology

    2023  Volume 44, Issue 2, Page(s) 115–125

    Abstract: Transactive response DNA-binding protein 43 (TDP-43) pathological inclusions are found in frontotemporal lobar degeneration (FTLD-TDP) and Alzheimer's disease (AD-TDP). While clinically different, TDP-43 inclusions in FTLD-TDP and AD can have similar ... ...

    Abstract Transactive response DNA-binding protein 43 (TDP-43) pathological inclusions are found in frontotemporal lobar degeneration (FTLD-TDP) and Alzheimer's disease (AD-TDP). While clinically different, TDP-43 inclusions in FTLD-TDP and AD can have similar morphological characteristics. However, TDP-43 colocalizing with tau and forming "apple-bite" or "flame-shaped" neuronal cytoplasmic inclusions (NCI) are only found in AD-TDP. Here, we describe a case with AD and neuritic plaque-associated TDP-43. The patient was a 96-year-old right-handed Caucasian woman who had developed a slowly progressive amnestic syndrome compatible with typical AD at age 80. Genetic testing revealed APOE ε3/ε4, GRN r5848 CT, and MAPT H1/H2 genotype. Consistent with the old age at onset and long disease duration, limbic-predominant AD was found at autopsy, with high hippocampal yet low cortical neurofibrillary tangle (NFT) counts. Hippocampal and amygdala sclerosis were present. Immunohistochemistry for phospho-TDP-43 showed NCIs, dystrophic neurites, and rare neuronal intranuclear inclusions consistent with FTLD-TDP type A, as well as tau NFT-associated TDP-43 inclusions. These were frequent in the amygdala, entorhinal cortex, hippocampus, occipitotemporal gyrus, and inferior temporal gyrus but sparse in the mid-frontal cortex. Additionally, there were TDP-43-immunoreactive inclusions forming plaque-like structures in the molecular layer of the dentate fascia of the hippocampus. The presence of neuritic plaques in the same region was confirmed using thioflavin-S fluorescent microscopy and immunohistochemistry for phospho-tau. Double labeling immunofluorescence showed colocalization of TDP-43 and tau within neuritic plaques. Other pathologies included mild Lewy body pathology predominantly affecting the amygdala and olfactory bulb, aging-related tau astrogliopathy, and mixed small vessel disease (arteriolosclerosis and amyloid angiopathy) with several cortical microinfarcts. In conclusion, we have identified TDP-43 colocalizing with tau in neuritic plaques in AD, which expands the association of TDP-43 and tau in AD beyond NFTs. The clinical correlate of this plaque-associated TDP-43 appears to be a slowly progressive amnestic syndrome.
    MeSH term(s) Female ; Humans ; Aged, 80 and over ; Alzheimer Disease/pathology ; Plaque, Amyloid ; Frontotemporal Dementia ; Frontotemporal Lobar Degeneration/pathology ; DNA-Binding Proteins/metabolism ; Memory Disorders/etiology
    Chemical Substances DNA-Binding Proteins
    Language English
    Publishing date 2023-07-31
    Publishing country Australia
    Document type Case Reports
    ZDB-ID 1483794-8
    ISSN 1440-1789 ; 0919-6544
    ISSN (online) 1440-1789
    ISSN 0919-6544
    DOI 10.1111/neup.12938
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Alzheimer CSF biomarkers may be misleading in normal-pressure hydrocephalus.

    Graff-Radford, Neill R

    Neurology

    2014  Volume 83, Issue 17, Page(s) 1573–1575

    Abstract: Objective: This article discusses why CSF biomarkers found in normal-pressure hydrocephalus (NPH) can be misleading when distinguishing NPH from comorbid NPH with Alzheimer disease (AD).: Methods: We describe NPH CSF biomarkers and how shunt surgery ... ...

    Abstract Objective: This article discusses why CSF biomarkers found in normal-pressure hydrocephalus (NPH) can be misleading when distinguishing NPH from comorbid NPH with Alzheimer disease (AD).
    Methods: We describe NPH CSF biomarkers and how shunt surgery can change them. We hypothesize the effects that hydrocephalus may play on interstitial fluid space and amyloid precursor protein (APP) fragment drainage into the CSF based on a recent report and how this may explain the misleading CSF NPH biomarker findings.
    Results: In NPH, β-amyloid protein 42 (Aβ42) is low (as in AD), but total tau (t-tau) and phospho-tau (p-tau) levels are normal, providing conflicting biomarker findings. Low Aβ42 supports an AD diagnosis but tau findings do not. Importantly, not only Aβ42, but all APP fragments and tau proteins are low in NPH CSF. Further, these proteins increase after shunting. An increase in interstitial space and APP fragment drainage into the CSF during sleep was reported recently.
    Conclusions: In the setting of hydrocephalus when the brain is compressed, a decrease in interstitial space and APP protein fragment drainage into the CSF may be impeded, resulting in low levels of all APP fragments and tau proteins, which has been reported. Shunting, which decompresses the brain, would create more room for the interstitial space to increase and protein waste fragments to drain into the CSF. In fact, CSF proteins increase after shunting. CSF biomarkers in pre-shunt NPH have low Aβ42 and tau protein levels, providing misleading information to distinguish NPH from comorbid NPH plus AD.
    MeSH term(s) Alzheimer Disease/cerebrospinal fluid ; Amyloid beta-Peptides/cerebrospinal fluid ; Biomarkers/cerebrospinal fluid ; Humans ; Hydrocephalus, Normal Pressure/cerebrospinal fluid ; Hydrocephalus, Normal Pressure/diagnosis ; Peptide Fragments/cerebrospinal fluid ; tau Proteins/cerebrospinal fluid
    Chemical Substances Amyloid beta-Peptides ; Biomarkers ; Peptide Fragments ; amyloid beta-protein (1-42) ; tau Proteins
    Language English
    Publishing date 2014-10-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 207147-2
    ISSN 1526-632X ; 0028-3878
    ISSN (online) 1526-632X
    ISSN 0028-3878
    DOI 10.1212/WNL.0000000000000916
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Normal Pressure Hydrocephalus.

    Graff-Radford, Neill R / Jones, David T

    Continuum (Minneapolis, Minn.)

    2019  Volume 25, Issue 1, Page(s) 165–186

    Abstract: Purpose of review: Since it was first described in 1965, normal pressure hydrocephalus (NPH) has been a controversial subject. New studies have shed light on its epidemiology and pathogenesis and provided objective ways to measure outcome in patients ... ...

    Abstract Purpose of review: Since it was first described in 1965, normal pressure hydrocephalus (NPH) has been a controversial subject. New studies have shed light on its epidemiology and pathogenesis and provided objective ways to measure outcome in patients with NPH. Neuroimaging has improved and allows better recognition of both NPH and the presence of overlapping diseases RECENT FINDINGS: Several recent epidemiologic studies confirm that NPH is a rare disease, but the presence of large ventricles is a common finding with aging. NPH may be multifactorial, including congenital causes, vascular disease, and impaired CSF absorption. MRI features of NPH include enlarged ventricular size and CSF fluid collection outside the ventricles not due to atrophy. The term disproportionately enlarged subarachnoid space hydrocephalus (DESH) has been used to describe prognostic MRI features in NPH, including a "tight high convexity" and enlargement of CSF spaces in the sylvian fissure. DESH has been included in the Japanese guideline for the diagnosis and treatment of NPH. A new NPH scale has been published that provides an objective framework for evaluating patients with NPH before and after shunt placement. Programmable shunts can noninvasively manage overdrainage complications. Surgical outcome has been improving over time. Recent studies have led to improved recognition of overlapping diseases such as Alzheimer pathology, which co-occurs in about 30% of NPH cases. Fludeoxyglucose positron emission tomography (FDG-PET) is a promising imaging modality for diagnosing NPH and detecting concomitant degenerative disease.
    Summary: A systematic approach to patients with possible NPH allows recognition of the subset of patients who will respond to shunt surgery and identification of those with alternative diagnoses.
    MeSH term(s) Atrophy/diagnosis ; Atrophy/pathology ; Brain/pathology ; Humans ; Hydrocephalus, Normal Pressure/diagnosis ; Hydrocephalus, Normal Pressure/etiology ; Magnetic Resonance Imaging/methods ; Prognosis ; Risk Factors
    Language English
    Publishing date 2019-02-17
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 1538-6899
    ISSN (online) 1538-6899
    DOI 10.1212/CON.0000000000000689
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Disparate Dementia Risk Factors Are Associated with Cognitive Impairment and Rates of Decline in African Americans.

    Lachner, Christian / Craver, Emily C / Babulal, Ganesh M / Lucas, John A / Ferman, Tanis J / White, Richard O / Graff-Radford, Neill R / Day, Gregory S

    Annals of neurology

    2024  Volume 95, Issue 3, Page(s) 518–529

    Abstract: Objective: This study was undertaken to evaluate the frequency of modifiable dementia risk factors and their association with cognitive impairment and rate of decline in diverse participants engaged in studies of memory and aging.: Methods: ... ...

    Abstract Objective: This study was undertaken to evaluate the frequency of modifiable dementia risk factors and their association with cognitive impairment and rate of decline in diverse participants engaged in studies of memory and aging.
    Methods: Modifiable dementia risk factors and their associations with cognitive impairment and cognitive decline were determined in community-dwelling African American (AA; n = 261) and non-Hispanic White (nHW; n = 193) participants who completed ≥2 visits at the Mayo Clinic Alzheimer Disease Research Center in Jacksonville, Florida. Risk factors and their associations with cognitive impairment (global Clinical Dementia Rating [CDR] ≥ 0.5) and rates of decline (CDR Sum of Boxes) in impaired participants were compared in AA and nHW participants, controlling for demographics, APOE ɛ4 status, and Area Deprivation Index.
    Results: Hypertension, hypercholesterolemia, obesity, and diabetes were overrepresented in AA participants, but were not associated with cognitive impairment. Depression was associated with increased odds of cognitive impairment in AA (odds ratio [OR] = 4.30, 95% confidence interval [CI] = 2.13-8.67) and nHW participants (OR = 2.79, 95% CI = 1.21-6.44) but uniquely associated with faster decline in AA participants (β = 1.71, 95% CI = 0.69-2.73, p = 0.001). Fewer AA participants reported antidepressant use (9/49, 18%) than nHW counterparts (57/78, 73%, p < 0.001). Vitamin B12 deficiency was also associated with an increased rate of cognitive decline in AA participants (β = 2.65, 95% CI = 0.38-4.91, p = 0.023).
    Interpretation: Modifiable dementia risk factors are common in AA and nHW participants, representing important risk mitigation targets. Depression was associated with dementia in AA and nHW participants, and with accelerated declines in cognitive function in AA participants. Optimizing depression screening and treatment may improve cognitive trajectories and outcomes in AA participants. ANN NEUROL 2024;95:518-529.
    MeSH term(s) Humans ; Alzheimer Disease/complications ; Black or African American ; Cognition Disorders/etiology ; Cognitive Dysfunction/epidemiology ; Cognitive Dysfunction/complications ; Risk Factors ; White
    Language English
    Publishing date 2024-01-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80362-5
    ISSN 1531-8249 ; 0364-5134
    ISSN (online) 1531-8249
    ISSN 0364-5134
    DOI 10.1002/ana.26847
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Prevention of late‑life dementia: what works and what does not.

    Tipton, Philip W / Graff-Radford, Neill R

    Polish archives of internal medicine

    2018  Volume 128, Issue 5, Page(s) 310–316

    Abstract: Advances in the treatment and prevention of disease have contributed to an aging global population. Subsequently, there is an increasing prevalence of age‑related conditions, such as dementia. There are currently no disease‑modifying therapies ... ...

    Abstract Advances in the treatment and prevention of disease have contributed to an aging global population. Subsequently, there is an increasing prevalence of age‑related conditions, such as dementia. There are currently no disease‑modifying therapies commercially available, and there is a growing emphasis on strategies to prevent dementia. We have reviewed the relevant literature pertaining to dementia risk and putative prevention factors. We present our findings by summarizing the pertinent items that may play a role in prevention and conclude our recommendations at this time.
    MeSH term(s) Alzheimer Disease/epidemiology ; Alzheimer Disease/prevention & control ; Dementia/epidemiology ; Dementia/prevention & control ; Female ; Humans ; Life Style ; Male ; Risk
    Language English
    Publishing date 2018-05-16
    Publishing country Poland
    Document type Journal Article ; Review
    ZDB-ID 123500-x
    ISSN 1897-9483 ; 0032-3772
    ISSN (online) 1897-9483
    ISSN 0032-3772
    DOI 10.20452/pamw.4263
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Can aerobic exercise protect against dementia?

    Graff-Radford, Neill R

    Alzheimer's research & therapy

    2011  Volume 3, Issue 1, Page(s) 6

    Abstract: There are more than 36 million people in the US over the age of 65, and all of them are impacted by the cognitive decline and brain atrophy associated with normal aging and dementia-causing conditions like Alzheimer's disease, Lewy body disease, and ... ...

    Abstract There are more than 36 million people in the US over the age of 65, and all of them are impacted by the cognitive decline and brain atrophy associated with normal aging and dementia-causing conditions like Alzheimer's disease, Lewy body disease, and vascular dementia. Recently, moderate exercise and improved fitness have been shown to enhance cognition in cognitively normal older persons as well as in individuals who complain of memory difficulty. Additionally, fitness correlates with brain volume in persons who are cognitively normal and those with Alzheimer's disease. Exercise in mouse models causes neurogenesis in the dentate gyrus. This review will discuss animal experiments, epidemiology, limited prospective studies, and biomarker data that make the case that prospective blinded studies are urgently needed to evaluate the role of aerobic exercise in protecting against dementia.
    Language English
    Publishing date 2011-02-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2506521-X
    ISSN 1758-9193 ; 1758-9193
    ISSN (online) 1758-9193
    ISSN 1758-9193
    DOI 10.1186/alzrt65
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Age-Specific Barriers and Facilitators to Research Participation Amongst African Americans in Observational Studies of Memory and Aging.

    Nissim, Nicole R / Fudge, Michelle R / Lachner, Christian / Babulal, Ganesh M / Allyse, Megan A / Graff-Radford, Neill R / Lucas, John A / Day, Gregory S

    Journal of racial and ethnic health disparities

    2023  

    Abstract: Background: Black/African Americans experience a high burden of Alzheimer disease and related dementias yet are critically underrepresented in corresponding research. Understanding barriers and facilitators to research participation among younger and ... ...

    Abstract Background: Black/African Americans experience a high burden of Alzheimer disease and related dementias yet are critically underrepresented in corresponding research. Understanding barriers and facilitators to research participation among younger and older African Americans is necessary to inform age-specific strategies to promote equity in studies of early- and late-onset neurodegenerative diseases.
    Study design: Survey respondents (n = 240) rated barriers and facilitators of research participation. Age-specific differences were evaluated using nonparametric Kruskal-Wallis tests across respondents aged 18-44 years (n = 76), 45-64 years (n = 83), and ≥ 65 years (n = 81). Strategies to mitigate barriers and promote facilitators were further explored via community-based focus groups. Pooled frequency of common themes discussed in focus groups were evaluated and compared across different ages including ≥ 45 years, ≥ 65 years, and mixed ages ≥ 45 years.
    Results: Younger respondents (aged 18-44 and 45-64 years) expressed a greater need for flexibility in when, where, and how research testing takes place versus adults ≥ 65 years. Focus groups emphasized long-lasting consequences of systemic racism and the need to build and foster trust to resolve barriers and promote research engagement amongst African Americans.
    Discussion: Age-specific strategies are needed to increase engagement, address recruitment disparities, and promote retention of African American participants in memory and aging studies across the lifespan.
    Language English
    Publishing date 2023-08-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2760524-3
    ISSN 2196-8837 ; 2197-3792
    ISSN (online) 2196-8837
    ISSN 2197-3792
    DOI 10.1007/s40615-023-01741-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Sagittal Spinal Deformity in Patients with Idiopathic Normal Pressure Hydrocephalus.

    Lenartowicz, Karina A / Naylor, Ryan M / Mikula, Anthony L / Graff-Radford, Jonathan / Jones, David T / Cutsforth-Gregory, Jeremy K / Graff-Radford, Neill R / Fogelson, Jeremy L / Cogswell, Petrice M / Elder, Benjamin D

    Turkish neurosurgery

    2023  Volume 33, Issue 3, Page(s) 471–476

    Abstract: Aim: To measure the baseline spinopelvic parameters and characterize the sagittal, and coronal plane deformities in patients with idiopathic normal pressure hydrocephalus (iNPH).: Material and methods: We analyzed a series of patients at one academic ...

    Abstract Aim: To measure the baseline spinopelvic parameters and characterize the sagittal, and coronal plane deformities in patients with idiopathic normal pressure hydrocephalus (iNPH).
    Material and methods: We analyzed a series of patients at one academic institution who underwent ventriculoperitoneal shunting for iNPH with pre-shunt standing full length x-rays. The series of patients was enrolled consecutively to minimize selection bias. We quantified comorbid sagittal plane spinal deformity based on the Scoliosis Research Society-Schwab classification system by assessing pelvic incidence and lumbar lordosis mismatch (PI-LL), pelvic tilt (PT), and sagittal vertical axis (SVA).
    Results: Seventeen patients (59% male) were included in this study. Mean (± standard deviation) age was 74 ± 5.3 years with a body mass index (BMI) of 30 ± 4.5 kg/m < sup > 2< sup > . Six patients (35%) had marked sagittal plane spinal deformity by at least one parameter: five (29%) had greater than 20˚ PI-LL mismatch, three (18%) had > 9.5 cm SVA, and one (6%) had PT greater than 30˚. Additionally, the thoracic kyphosis exceeded the lumbar lordosis in nine patients (53%).
    Conclusion: Positive sagittal balance, with thoracic kyphosis exceeding lumbar lordosis, is common in iNPH patients. This may lead to postural instability, especially in patients whose gait does not improve following shunting. These patients may warrant further investigation and workup, including full length standing x-rays. Future studies should assess for improvement in the sagittal plane parameters following shunt placement.
    MeSH term(s) Aged ; Female ; Humans ; Male ; Hydrocephalus, Normal Pressure ; Kyphosis ; Lordosis ; Lumbar Vertebrae ; Quality of Life ; Retrospective Studies ; Scoliosis ; Spine/abnormalities
    Language English
    Publishing date 2023-03-13
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 1203779-5
    ISSN 2651-5032 ; 1019-5149
    ISSN (online) 2651-5032
    ISSN 1019-5149
    DOI 10.5137/1019-5149.JTN.36555-22.3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top