Insights into Mechanisms Underlying Brain Impairment in Aging

  • 39k

    Total downloads

  • 165k

    Total views and downloads

About this Research Topic

Submission closed

Background

The number of people worldwide over 60 years of age is increasing. According to contemporary knowledge, the aging process contributes to reduce the efficiency of defense and repair systems and leads to subclinical changes in the central nervous system (CNS), including morphological and functional deterioration of brain function, progressive loss of neurons, reduced levels of neurotransmitters, excessive inflammation, disturbed vascular integrity, and an increase in the level of pathological proteins such as β-amyloid (Aβ), tau and α-synuclein (ASN).

In addition, in the aging brain the decreasing effectiveness of repair mechanisms increases the susceptibility to reactive oxygen species, neuroinflammatory processes and spontaneous mutagenesis leading to the development of age-related diseases, including dementia, depression, Alzheimer’s disease (AD), Parkinson’s disease (PD), stroke and epilepsy. Dementia and depression are common problems among the elderly, affecting respectively almost 10% and approximately 15% of people over the age of 65.
AD is the most common cause of dementia, affecting nearly half of the population over 90 years of age. AD is associated with the deposition of pathological proteins such as Aβ and phosphorylated tau, which also strongly affects the regulation of synaptic transmission, having a significant impact on the onset of epileptic-like activity. Patients with a long AD history, usually longer than 3 years, may therefore have a higher risk of developing seizures or epilepsy. Epilepsy in the elderly, which appears after 60 years of age, remains asymptomatic in the vast majority, although generalized epilepsy may also rarely manifest in that age.

In the old age, additional causes of epilepsy are cerebrovascular diseases (CVD), which contribute to 30-50% of all identified cases of epilepsy after 60 years of age. Finally, aging is the most important risk factor for the development of PD, which affects about 1% of the population in age after 60 years and around 5% over the age of 85 years. It has been shown that the pathological mechanisms of this disease are associated with the deposition of Lewy bodies (LB) composed of ASN, leading to disturbances at the molecular and subcellular levels and affecting structures such as mitochondria. Both, mitochondria and antioxidant systems are also associated with brain injury upon ischemic stroke. In the aging population the number of stroke incidents increases. Stroke in the population is expected to grow by nearly 40% over the next 20 years.

Many unexplained phenomena are implied in the aging process. This Research Topic aims to elucidate the mechanisms underlying body functioning impairment, associated with change observed in normal aging, and with the old age diseases‘ development.

It covers disorders at the molecular and functional levels in old age and may help addressing the currently unanswered questions:
-whether the brain pathologies in these individuals are associated with subtle clinical deficits,
-why various brain structures’ damage present different clinical symptoms,
-which genes and molecular factors are associated with neurodegenerative transformation,
-why Aβ deposits may be found in over 80 years old individuals without showing dementia signs in normal aging.

It seems that finding the cause of pathological changes in the old age may improve health and daily functioning of older people.

Keywords: molecular factors, normal aging, cerebrovascular diseases, neurodegenerative diseases

Important note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.

Frequently asked questions

  • Frontiers' Research Topics are collaborative hubs built around an emerging theme.Defined, managed, and led by renowned researchers, they bring communities together around a shared area of interest to stimulate collaboration and innovation.

    Unlike section journals, which serve established specialty communities, Research Topics are pioneer hubs, responding to the evolving scientific landscape and catering to new communities.

  • The goal of Frontiers' publishing program is to empower research communities to actively steer the course of scientific publishing. Our program was implemented as a three-part unit with fixed field journals, flexible specialty sections, and dynamically emerging Research Topics, connecting communities of different sizes and maturity.

    Research Topics originate from the scientific community. Many of our Research Topics are suggested by existing editorial board members who have identified critical challenges or areas of interest in their field.

  • As an editor, Research Topics will help you build your journal, as well as your community, around emerging, cutting-edge research. As research trailblazers, Research Topics attract high-quality submissions from leading experts all over the world.

    A thriving Research Topic can potentially evolve into a new specialty section if there is sustained interest and a growing community around it.

  • Each Research Topic must be approved by the specialty chief editor, and it falls under the editorial oversight of our editorial boards, supported by our in-house research integrity team. The same standards and rigorous peer review processes apply to articles published as part of a Research Topic as for any other article we publish.

    In 2023, 80% of the Research Topics we published were edited or co-edited by our editorial board members, who are already familiar with their journal's scope, ethos, and publishing model. All other topics are guest edited by leaders in their field, each vetted and formally approved by the specialty chief editor.

  • Publishing your article within a Research Topic with other related articles increases its discoverability and visibility, which can lead to more views, downloads, and citations. Research Topics grow dynamically as more published articles are added, causing frequent revisiting, and further visibility.

    As Research Topics are multidisciplinary, they are cross-listed in several fields and section journals – increasing your reach even more and giving you the chance to expand your network and collaborate with researchers in different fields, all focusing on expanding knowledge around the same important topic.

    Our larger Research Topics are also converted into ebooks and receive social media promotion from our digital marketing team.

  • Frontiers offers multiple article types, but it will depend on the field and section journals in which the Research Topic will be featured. The available article types for a Research Topic will appear in the drop-down menu during the submission process.

    Check available article types here 

  • Yes, we would love to hear your ideas for a topic. Most of our Research Topics are community-led and suggested by researchers in the field. Our in-house editorial team will contact you to talk about your idea and whether you’d like to edit the topic. If you’re an early-stage researcher, we will offer you the opportunity to coordinate your topic, with the support of a senior researcher as the topic editor. 

    Suggest your topic here 

  • A team of guest editors (called topic editors) lead their Research Topic. This editorial team oversees the entire process, from the initial topic proposal to calls for participation, the peer review, and final publications.

    The team may also include topic coordinators, who help the topic editors send calls for participation, liaise with topic editors on abstracts, and support contributing authors. In some cases, they can also be assigned as reviewers.

  • As a topic editor (TE), you will take the lead on all editorial decisions for the Research Topic, starting with defining its scope. This allows you to curate research around a topic that interests you, bring together different perspectives from leading researchers across different fields and shape the future of your field. 

    You will choose your team of co-editors, curate a list of potential authors, send calls for participation and oversee the peer review process, accepting or recommending rejection for each manuscript submitted.

  • As a topic editor, you're supported at every stage by our in-house team. You will be assigned a single point of contact to help you on both editorial and technical matters. Your topic is managed through our user-friendly online platform, and the peer review process is supported by our industry-first AI review assistant (AIRA).

  • If you’re an early-stage researcher, we will offer you the opportunity to coordinate your topic, with the support of a senior researcher as the topic editor. This provides you with valuable editorial experience, improving your ability to critically evaluate research articles and enhancing your understanding of the quality standards and requirements for scientific publishing, as well as the opportunity to discover new research in your field, and expand your professional network.

  • Yes, certificates can be issued on request. We are happy to provide a certificate for your contribution to editing a successful Research Topic.

  • Research Topics thrive on collaboration and their multi-disciplinary approach around emerging, cutting-edge themes, attract leading researchers from all over the world.

  • As a topic editor, you can set the timeline for your Research Topic, and we will work with you at your pace. Typically, Research Topics are online and open for submissions within a few weeks and remain open for participation for 6 – 12 months. Individual articles within a Research Topic are published as soon as they are ready.

    Find out more about our Research Topics

  • Our fee support program ensures that all articles that pass peer review, including those published in Research Topics, can benefit from open access – regardless of the author's field or funding situation.

    Authors and institutions with insufficient funding can apply for a discount on their publishing fees. A fee support application form is available on our website.

  • In line with our mission to promote healthy lives on a healthy planet, we do not provide printed materials. All our articles and ebooks are available under a CC-BY license, so you can share and print copies.