Arterial Stiffness and Brain Integrity: A review of MRI findings.

CONCLUSION: Considering the established relationship between arterial stiffness, brain and cognition, this review highlights the need for future studies of brain structure and function in aging to implement measurements of arterial stiffness in parallel with quantitative imaging. PMID: 31063866 [PubMed - as supplied by publisher]
Source: Ageing Research Reviews - Category: Genetics & Stem Cells Authors: Tags: Ageing Res Rev Source Type: research

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CONCLUSIONS AND RELEVANCE: Neuropsychological testing and MRI remain the most widely used diagnostic tests by DLB specialists. Other tests-particularly indicative biomarkers-are used only selectively. Research is needed to validate existing potential DLB biomarkers, develop new biomarkers, and investigate mechanisms to improve DLB diagnosis. PMID: 33009039 [PubMed - as supplied by publisher]
Source: Alzheimer Disease and Associated Disorders - Category: Psychiatry Tags: Alzheimer Dis Assoc Disord Source Type: research
Components of the neurovascular unit (NVU) establish dynamic crosstalk that regulates cerebral blood flow and maintain brain homeostasis. Here, we describe accumulating evidence for cellular elements of the NVU contributing to critical physiological processes such as cerebral autoregulation, neurovascular coupling, and vasculo-neuronal coupling. We discuss how alterations in the cellular mechanisms governing NVU homeostasis can lead to pathological changes in which vascular endothelial and smooth muscle cell, pericyte and astrocyte function may play a key role. Because hypertension is a modifiable risk factor for stroke an...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
ConclusionThe new method by combined rCBF analysis of occipital gyri and para-hippocampal regions showed best diagnostic ability in differentiating DLB from AD.
Source: Japanese Journal of Radiology - Category: Radiology Source Type: research
Conclusions: Changes in retinal microvasculature identified using OCTA are associated with monogenic SVD and different stages of AD, but data are limited and partly confounded by methodological differences. Larger studies with risk factors adjustment and more consistent OCTA methods are needed to fully exploit this technology.PROSPERO registration number: CRD42020166929.
Source: Frontiers in Neurology - Category: Neurology Source Type: research
Abstract Atrial fibrillation is associated with multiple adverse comorbidities, including the development of dementia in patients with and without a history of stroke. Mechanistic models have been proposed to explain the association of AF and dementia. Alterations of brain perfusion from embolic events, bleeding, and rhythm-related hypoperfusion underlie many of these models. Multiple mediators such as oxidative injury, inflammatory and autoimmune mechanisms, and genetic predisposition also interplay in the disease association. There are potential therapeutic opportunities to reduce dementia risk, including early ...
Source: Circulation - Category: Cardiology Authors: Tags: Circulation Source Type: research
This study aimed to characterize the role of BDNF in age-related microglial activation. Initially, we found that degrees of microglial activation were especially evident in the substantia nigra (SN) across different brain regions of aged mice. The levels of BDNF and TrkB in microglia decreased with age and negatively correlated with their activation statuses in mice during aging. Interestingly, aging-related microglial activation could be reversed by chronic, subcutaneous perfusion of BDNF. Peripheral lipopolysaccharide (LPS) injection-induced microglial activation could be reduced by local supplement of BDNF, while shTrkB...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Conclusion: Greater BMI is associated with cerebral perfusion decreases in both resting and concentration SPECT scans across adulthood. News in Context: Systematic review finds ten lifestyle factors that clearly impact the probability of developing Alzheimer’s disease (AD) Can you grow your hippocampus? Yes. Here’s how, and why it matters What are Cognitive Abilities and Skills, and How to Boost Them? Reminder: A brain-friendly lifestyle is the best approach to delay cognitive decline and dementia Cognitive training, diet, exercise, and vascular management seen to improve cognition even in people with genetic...
Source: SharpBrains - Category: Neuroscience Authors: Tags: Cognitive Neuroscience Health & Wellness AD pathology adults Alzheimer’s Disease blood supply BMI body mass index brain brain regions brain scans brain-function cerebral perfusion cognitive-ability hippocampus lifestyle o Source Type: blogs
ConclusionsThese data suggest that sEH inhibitors may be viable treatments for cognitive impairments associated with hypertension and CCH.
Source: Microcirculation - Category: Research Authors: Tags: ORIGINAL RESEARCH Source Type: research
In this study, we examined the effects of oxytocin on the Aβ-induced impairment of synaptic plasticity in mice. To investigate the effect of oxytocin on synaptic plasticity, we prepared acute hippocampal slices for extracellular recording and assessed long-term potentiation (LTP) with perfusion of the Aβ active fragment (Aβ25-35) in the absence and presence of oxytocin. We found that oxytocin reversed the impairment of LTP induced by Aβ25-35 perfusion in the mouse hippocampus. These effects were blocked by pretreatment with the selective oxytocin receptor antagonist L-368,899. Furthermore, the tr...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In this study, we applied a well studied prediction model developed on data from five CpG sites, to increase the practicability of these tests. We have determined the biological age of the heart, specifically of the right atrium (RA) and left atrium (LA), and of peripheral blood leucocytes, by measuring the mitotic telomere length (TL) and the non-mitotic epigenetic age (DNAmAge). We found that DNAmAge, of both atrial tissues (RA and LA), was younger in respect to the chronological age (-12 years). Furthermore, no significant difference existed between RA and LA, suggesting that, although anatomically diverse and ex...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
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